GAIA Aria 31-61 - Delta-Temp

GAIA Aria 31-61 MSER-XEE
Air source heat pump
Installation and operating manual
M03T40M0-02 21-04-2011

Clearances
H1 H L1 L L2 W1 W W2
200 2030 800 800 100 500 600 800
Maximum distance
A max 80 m keypad in remote positioning (1)
B max 25 m refrigerant pipes
C1 = B + C max 20 m outdoor air temperature probe(2)
D max 15 m height difference
E 6 m 6 m back up → siphon
The unit must not be trailed: the feet can be broken!
2
Clearances
GAIA
31
61
How to access the unit
H L1 L L2 W1 W W2
845 800 860 300 300 720 800
1304 800 1250 300 300 788 800
Electrical connections 230/1/50 Electrical connections 400/3/50 +N
3
L-N, PE
3
10
L-N, PE
2
SIGNAL 10 SIGNAL
1 A B C 2
!
E
D
C1
5
L1-L2-L3 N, PE
Serial number label ( 1 )
Write data and communicate
them to the assistance service in
case of intervention request.
4
L1-L2-L3 PE
1
1
2

navigation
Select (rotate)
Confirm (press)
Previous menu (pressure)
Main menu (pressure)
Boiler
Active pump
DWH production
Defrosting
Aux. heart
Solar panels
Before any operation carefully read the
GENERAL WARNINGS at the end of the manual
MULTIFUNCTION KEYPAD
Display
3
Empty battery
Heating
Cooling
Alarm in progress
Compressor not timed
Timed compressor
quick access to menu
modification of the ambient setpoint
Off-Comfort-Eco-Automatic
(pressure)
Heating-Cooling
(pressure)
Fast forwards “Alarms” access (if present)
Fast backwards
Ambient thermostat mode
Environment temperature
and humidity reading.
Environment thermostat
function.
Environment scheduling.
Ven. 17/10/08 18:02
Stato ECO
Setpoint 20.7 100 %
T Amb 18.0
T Ext 45.0
Unit interface mode
Access to the unit
configuration parameters.
Ven. 17/10/08 18:02
Stato ECO
Setpoint 20.7 100 %
T In 18.0
T ACS 45.0
To switch from one mode to another :
remove the lid at the base
move the DIP under the base.
Ambient thermostat Unit iterface

Dear Customer,
We congratulate you on choosing an ELFOSystem product, the air conditioning
system at annual cycle that offers the possibility in a sole system of
meeting all the heating, conditioning and domestic hot water needs.
Clivet is being working for years to offer systems able to assure the maximum
comfort for long time with high reliability, efficiency , quality and safety.
The target of the company is to offer advanced systems, that assure
the best comfort, reduce the energy consumption, the installation and maintenance
costs for all the life-cycle of the system.
With this manual, we want to give you information that are useful in all the
phases: from the reception, to the installation and use until the disposal so
that a system so advanced offers the best procedure of installation and use.
Best regards and have a nice reading !
CLIVET Spa
4

DESCRIPTION GAIA
Packaged unit for the comfort by using renewable
Energy.
Integrated system for the recovery of the solar Energy
from thermal correctors.
Integrated production of domestic hot water.
HYDRAULIC DISTRIBUTION
The secondary circuits
GAIA can handle up to three different zones with
systems at different temperatures:
low consumption, direct current circulators
automatic modulation of the water flow rate based
on the temperature difference
optional mixing valve to obtain a different water
temperature based on the type of terminal
variable water temperature for each circuit
according to external temperature.
The hydraulic separator
Permits hydraulic separation between the unit and
system, ensuring perfect GAIA operation.
The primary circuit
Low consumption, direct current circulator
Water flow rate adjusted to the variation in compressor
speed maximises the exchange efficiency regardless
of the variations in flow rate required by the system.
The sludge remover
The sludge remover eliminates particles of dirt, rust
and sludge deposits from the system, which could
cause considerable damage to the terminals, valves,
pumps and exchangers, guaranteeing system
performance and reliability over time.
INTEGRATED DOMESTIC HOT WATER
PRODUCTION
Storage tank 200 litres
Domestic hot water recirculation
GAIA avoids wasting water and energy thanks to the
possibility of managing DHW recirculation with a
dedicated circulator, which is operated according to
the schedule defined upon the initial start-up of the
unit.
Hot water always guaranteed
If critical conditions or malfunctions are detected, Gaia
automatically activates an electric safety heater in
order to guarantee the constant availability of domestic
hot water.
GENERAL
5
With GAIA, it is also possible to set the time for an anti
-legionella cycle.
Burn-proof thermostatic valve
This is used to define the temperature of the domestic
hot water delivered to the system independently of the
temperature of the water contained in the storage
tank, with a particular burn-proof function that act in
case of supply problems from the aqueduct.
Domestic hot water expansion vessel
HIGH ENERGY EFFICIENCY AND REDUCED
CONSUMPTIONS
Direct current inverter compressor
Thanks to automatic capacity modulation, the direct
current inverter compressor supplies only the thermal
energy that is strictly necessary, thereby avoiding
useless wasting of energy and increasing the energy
efficiency so that the exchange surfaces are larger in
relation to the output capacity.
INTEGRATED SOLAR ENERGY RECOVERY
SYSTEM
GAIA has been designed to be connectable to solar
heating panels.
This will further increase the use of renewable sources
to produce free domestic hot water, through solar
energy captured by solar panels.
The control guarantees the production of domestic hot
water with the best energy efficiency possible,
favoring, when possible, direct solar energy through
the solar panels, or using indirect energy contained in
the air through the heat pump.
Domestic hot water temperature up to 80°C
When the water is heated by the solar panels, it can
reach a maximum temperature of 80°C. This set point
is specific for production with solar heat.
Outdoor climatic compensation
The water temperature for the system is automatically
adjusted based on the real requirements of the
building and the outdoor temperature, which increases
energy efficiency.

Multifunction keypad
The electronic control lets to freely establish
temperature, humidity, and operating times.
Once set, the control manages the operation :
Operating mode Summer, Winter, Domestic Hot
Water only
Outlet water temperature with climatic or fixed point
setting for each hydraulic circuit in the unit
Domestic hot water temperature from the heat
pump and from solar
Anti-legionella cycle
Sanitary recirculation timing
Operating parameters with user and installer
dedicated menus
Alarm signals
PLANT LAYOUT
A condensate water draining
B cooling pipes
C electrical connections
D probe solar panels
E external temperature probe
F power supply
G water supply (acqueduct)
H solar panels unit (not provided)
GENERAL
6
Maintenance of the correct system water
temperature for the re-start even if the unit is off
Remote control of the keyboard for timed
thermostat operation, weekly scheduling, room
humidity and temperature measurement.
7 programs with setting of daily time band
Variation of the outlet temperature based on the
dew point calculation for the hydraulic circuits in
reference to the room in which the HID-H1M
keyboard is installed.
I solar panels (Not Provided )
L DHW use
M DHW recirculation circuit
N multifunction keypad
O zone ambient thermostat (not provided)
P zone ambient thermostat (not provided)
Q system / DHW discarge
It is not provided the solar pump control

DELIVERY CONTROL
Before accepting the delivery you have to check:
that the unit hasn’t been damaged during transport.
Check that the materials delivered correspond with
that indicated on the transport document comparing
the data with the identification label ‘A’ positioned on
the packaging.
In case of damage or anomaly:
Write down on the transport document the damage
you found and quote this sentence: "Conditional
acceptance clear evidence of deficiencies/damages
during transport".
Contact supplier and the carrier by fax and
registered mail with advice of receipt.
Any disputes must be made within the 8 days following
the delivery. Complaints after this period are invalid.
HANDLING
Internal unit
Lifiting with forks:
Insert the forks on the long side of the pallet to
avoid damaging the panelling.
Lifting with crane:
Position the lifting belts on the long side of the
pallet .
Use protection and spacers to avoid damaging the
unit.
Exceeding the maximum inclination allowed as
indicated in the picture is prohibited.
Energy exchanger
Lifiting with forks:
Insert the forks by the small side of the pallet.
Lifting with crane:
Position the lifting belts on the long side of the
pallet.
Use protection and spacers to avoid damaging the
unit.
1 - RECEPTION
Before any operation carefully read the
GENERAL WARNINGS at the end of the manual
7

MAXIMUM DISTANCE
1 A B C 2
Refrigerant pipes: in vertical sections ensure the
presence of siphons every six metres of unevenness
(on the supply/suction line only).
ENERGY EXCHANGER
Clearances
The space '1' can be occupied by objects that must be
easily removeable in case of maintenance
interventions.
GAIA
31
61
Assembly kit
H L1 L L2 W1 W W2
845 800 860 300 300 720 800
1304 800 1250 300 300 788 800
A Antivibrators
B
C
Gasket
Connection to weld
Pipe union
Gasket
Connection to weld
Pipe union
!
E
D
2 - INSTALLATION
C1
8
A max 80 m keypad in remote positioning (1)
B max 25 m refrigerant pipes
C1 = B + C max 20 m outdoor air temperature probe(2)
D max 15 m height difference
E 6 m 6 m back up → siphon
The probe must be connected either to the energy
exchanger or, alternatively, to the internal unit.
GAIA 31
GAIA 61
A
B
A B
C
C

Direction of air supply
The unit is delivered with the delivery in position 1.
The air delivery may be directed in four different
directions depending on the installation location .
Per modificare l’orientamento:
Unscrew the M6 fixing bolts on the fan cap.(4 for
GAIA 31, 10 for GAIA 61) .
Remove the cap and rotate in the required
direction.
Fix the cap using the bolts previously removed.
Supply ducting
To duct the air delivery (M):
Unscrew the fixing screws and remove the
protective grill.
Connect the expulsion duct to the mouth of the
fan using a anti-vibration joint.
Return ducting
To duct the air intake (R):
Connect the intake duct to the flange present on
the battery side using an anti-vibration joint.
Fix the ducting using the threaded inserts present
on the structure .
After having carried out the electric connections set
the fan parameters in accordance with the following
indications:
Ventilation
Configuration paramenter
(by pwd)
Ducted 495 = MaxFan = 70%
Non ducted
495 = MaxFan = 60 %
(default value)
2 - INSTALLATION
9
R
M
GAIA 31
GAIA 61

2 - INSTALLATION
CONNECTION FLANGE WITH EXHAUST AIR DUCT IN THE BASEMENT - OPTION
This accessory allows to connect the exhaust air of the
Energy exchanger to a duct in the basement by simply
turning down the cap of the unit.
The flange must be fixed directly to the mouth of the
caps.
Hole dimensions for ducting
240
GAIA 61
GAIA 31 GAIA 61
450
Flange dimensions.
GAIA 31
327
247
327.5
Flange provided in 2 parts
247.5
50
119
346
1.5
50
340
329 329
24
O 10
537
457
201 201
25 201 201
804
19.5
800
19.5
196
97
97
51.5
51.5
24
10
1
2
3
4
Put the gasket “A “on the flange
A
Position the cap facing to the duct.

Condensate draining
Water is produced when operating the heat pump due
to the defrosting cycle of the external batteries.
During prolonged periods of particularly cold weather
the condensate could freeze blocking the flow and
generating an accumulation of ice which could
increase with time.
The unit is equipped with an anti-freeze resistance
that stops water from freezing inside the unit.
The condensate must be drained so that it does not
freeze:
Connect a conduit to the attachment present on
the unit.
Fix using the pipe clamp.
Orient the conduit towards the area suitable for
the discharge.
Maintain an inclination of 2% to guarantee the
regular flow of the condensate.
To avoid freezing of the water downstream of the
drain lay the tube below the frost line (A).
INTERNAL UNIT
Clearances
Keep to the indicated safety spaces.
The spaces can be occupied by objects that must be
easily removeable in case of maintenance
interventions.
The rear space ‘L2’ of 100 mm must always be
respected .
2 - INSTALLATION
11
2%
Min. 900 mm.
A
A Frost line
H1 H L1 L L2 W1 W W2
200 2030 800 800 100 500 600 800

Assembly kit
The unit is equipped with:
1 - kit Multifunction keypad + Outdoor air
temperature probe
2 - Installation manual
3 - Protective barrier kit
4 - Assembly kit
Kit components:
A Supporting feet
B Antivibrators for feet
C Aqueduct water filter
D Gasket
Connection to weld
Pipe union
E Gasket
Connection to weld
Pipe union
F Outdoor air temperature probe
G Batteries
H Multifunction keypad
I Sound proofing protective barrier
L Screws for protective barrier
Assembly of protective guards
Assemble as indicated in the figure using the screws
provided.
Position on the rear of the unit
leaving the air intake grill free
inserting the upper flange of the protective barrier
in slot ‘A’.
Fix using the screws provided.
Levelling unit
Position the internal unit on a flat, level surface .
Use a 12 spanner to adjust the support feet and level
the position of the internal unit. .
2 - INSTALLATION
12
1
2
3
4
A B C D E
H G F
I
L

HYDRAULIC CONNECTION
1 DHW delivery
2 DHW recirculation
3 Water supply
4 System supply 3° booster
5 System return 3° booster
6 System supply 2° booster
7 System return 2° booster
8 System delivery
9 System return
10 Solar system delivery
11 Solar system return
12 Net filters
13 Anti-vibration joints
14 Cut-off valves
In the tightening operations always use the wrench
and backup wrench.
EXPANSION TANK
GAIA is standard supplied with:
expansion tank for water technical
12 lt capacity
precharged at 1 bar
3 - WATER CONNECTIONS
expansion tank for domestic hot water
8 lt capacity
precharged at 2.5 bar
The volume of the expansion tank for water tecnica is sufficient for
systems up to:
700 lt radiant panels hot only water 35°C
700 lt radiant panels hot and cold water 35°C , 18°C
400 lt thermal hydronic terminals hot and cold water 45°C , 7°C
250 lt radiators hot only water 55°C
The pressure of the expansion tank for water tecnica is sufficient for
systems with a max. drop of 10 mt .
For drops higher than 12 mt, calculate the pressure to charge the tank
using the formula sideways.
WATER INPUT
Water supply input : Ø 1/2"
BOOSTER
R1
System water input : Ø 1"
System water supply : Ø 1"
R2 / R3
System water input : Ø 3/4"
System water supply : Ø 3/4"
13
12 13 14
= 20 mt
p charge (bar) = H (mt) / 10,2 + 0,3
example : p = 20 / 10,2 + 0,3 = 2,3 bar
1
2
3
4
5
6
7
8
9
10
11

DWH
DHW delivery : Ø 1/2"
DHW recirculation : Ø 3/8" gas
SOLAR SYSTEM
Solar system water inlet : Ø 3/4"
Solar system water supply : Ø 3/4"
If the solar system is present an additional
expansion vase will be needed.
The ACS expansion vase by GAIA is sized for water
up to 55 °C.
Solar probe
The solar panels are equipped with:
a control panel
a temperature probe (not provided by Clivet)
For their operating with solar panels:
place the temperature probe on well ‘A’ positioned
on the storage tank
carried out the electrical connections
the solar system must be enabled (see page 33).
3 - WATER CONNECTIONS
14
A
A Solar probe well

CHARGE
1. Before charging, position the systems general
switch in the 'off' position .
2. Check that the draining taps of the system are
closed (1B).
3. Check that the draining taps of the system DWH
are closed (1A).
4. Open all of the bleeding valves of the unit (2B).
5. Open all of the bleeding valves of the unit, system
and relative terminals.
6. Open the system's cut-off devices .
7. Open the tap of the pressure reducer (2A)
8. Start the filling slowly opening the water loading
tap (3A).
9. When water begins to exit from the bleeding valve,
close and continue the charging until the pressure
intended for the system (1-2 bar) is read on the
manometer (1C).
10. Calibrate the pressure reducer (2A).
The system is charged at a pressure of between 1
and 2 bar.
11. Check the hydraulic seal of the joints. Repeat the
operation after the unit has operated for a number
of hours and periodically control the system
pressure.
Reintegration is carried out when the unit is off
(pump OFF).
PRESSURE REDUCER
Working standard calibration : 3 Bar
Calibration range : 1.5 - 4 Bar
1 turn = 0.5 Bar
Pout = Pcalibration + (Pin - Pta) / 10
E.g. : Pcalibration = 3 Bar, Pin = 4 Bar, Pout = 3.1 Bar
3 - WATER CONNECTIONS
15
1
2
3
1A 1B
3A
1C

CONNECTION TO EXTERNAL STORAGE
Is possible to combine an external DHW accumulation,
provided by the customer.
Example:
Gaia + additional tank
A - Diameter of recirculation between the tanks = 3/8";
Piping length between the tanks = 2,5 mt.;
B - Diameter of piping between the tanks = 3/4";
Piping length between the tanks = 4,5 mt.;
Capacity = 0.40 m3/h
Gaia + additional tank + system recirculation
A - Diameter of recirculation between the tanks = 3/8";
Piping length between the tanks = 2,5 mt.;
B - Diameter of piping between the tanks = 3/4";
Piping length between the tanks = 4.5 m.;
Capacity between the two tanks = 0.3 m3/h
C - Diameter of system recirculation = 3/8";
System piping length = 30 mt.;
D - Diameter of system piping = 1/2";
Piping length between the tanks = 30 mt.;
Capacity of system recirculation = 0.13 m3/h
3 - WATER CONNECTIONS
16
1 Calibration valve - supplied by Customer
2 Mixture valve - supplied by Customer
3 Accumulation build-up - supplied by Customer
4 Auxiliary coupling - 3/4"
5 Recirculation inlet - 3/8"

DUCTING CONNECTION
Use only copper pipes for refrigeration,
specifications for R410A
Pipes must be clean.
On vertical sections ensure the presence of
siphons every six metres of unevenness on the
delivery/suction line only.
Plug the ends of the pipe prior to passing it through
a hole in the wall (1).
Do not place the ends of pipes which have not been
plugged or closed with tape directly on the ground
(2).
If the installation of the pipes is not to be completed
within the next day or for a long period of time,
braze the ends of the pipes and introduce nitrogen
oxide via a Schrader valve access joint to avoid the
formation of humidity and the contamination of the
particles.
Type of pipes GAIA 31 GAIA 61
Liquid Ø external 1/2” 5/8”
Gas Ø external 5/8” 3/4”
Min. thickness 1,0 mm 1,0 mm
Internal unit
Remove the connection covers (1)
Before attaching the ducting to the two units,
clean with dry air or nitrogen.
Energy exchanger
The exchanger is shipped with a nitrogen charge of
about 1 bar.
If it is discharged, test the leaks also before the
connections.
Insulate pipes.
Use insulation with resistance t = 120 ° C with a
thickness of at least 13 mm.
A Liquid ducting
B Gas ducting
C Electric cables
D Insulation
E Sheath - sticky tape
4 - REFRIGERATING CONNECTIONS
17
A
A max 25 m
B max 15 m
E
A
C
D
!
B
B

GAIA 31
Internal unit
External unit
GAIA 61
Internal unit
External unit
4 - REFRIGERATING CONNECTIONS
18
A
A
*
*
A Gas line
B Liquid line
1 Pipes supplied by the customer Ø external 5/8”
2 Pipes supplied by the customer Ø external 1/2”
* Welding points
1
1
A Gas line
B Liquid line
B
B
1 Pipes supplied by the customer Ø external 3/4”
2 Pipes supplied by the customer Ø external 5/8”
* Welding points
*
*
2
2

LEAK CONTROL
After having completed the refrigerating connections
the sealing of the refrigerating circuit must be
checked:
Check that the taps of the internal unit are closed.
Connect the manometric unit with the service
attachments.
Carry out the pressing with the refrigerant up to
250KPa.
Close the taps of the manometric unit
disconnecting the refrigerant cylinder .
Open the taps of the manometric unit to connect
the nitrogen cylinder.
Pressurise the system with nitrogen up to
1200KPa.
Check all of the ducting with a leak detection
lamp or an electronic instrument paying particular
attention to the welding and at joints in general.
If you do not possess the instruments necessary to
detect leaks leave all of the parts where a refrigerant
leak is possible (welding, joints etc.) free for
inspection.
DRY RUN
GAIA is delivered with charged refrigerator circuits in
the following manner:
Internal unit GAIA 31 4 kg R410A
Internal unit GAIA 61 7.5 kg R410A
Energy exchanger Nitrogen precharge
Subsequent to verifying that the refrigerating circuit is
hermitically sealed it is necessary to create a vacuum
in the connection ducting and in the energy exchange
unit:
Attach the vacuum pump on both of the service
attachments of the taps.
Proceed with vacuum.
Stop the pump at a pressure of approximately
100 Pa and leave in vacuum for a few hours
A small initial rise in the pressure is normal
If the pressure continuing to rise is the symptom
of a small leak or the presence of humidity. In the
case of a leak repeat the operations described in
the paragraph concerning the control of leaks in
the refrigerant ducting manual. In the presence of
humidity recharge the system with refrigerant gas
up to 100kpa and repeat the vacuum as
described above. Once the pressure is stable
continue on to the successive charging phase.
4 - REFRIGERATING CONNECTIONS
19
A Internal unit
B Energy exchanger
A Internal unit
B Energy exchanger
R410A
R410A

ADDED CHARGE
The refrigerant present in the internal unit must be
reintegrated with the quantity for the energy exchanger
and for lengths of ducting exceeding 5 metres based
upon that shown in the table.
Added charge for energy exchanger
GAIA 31 2.9 kg R410A
GAIA 61 3.5 kg R410A
Further refill for distance
exceeding 5 metres
4 - REFRIGERATING CONNECTIONS
0,01 kg / m
To carry out the charging:
With the system empty close the taps of the
manometric unit and disconnect the vacuum
pump.
Attach the refrigerant gas cylinder using the
manometric unit to allow the air to escape in the
rubber connection.
Open the taps of the manometric unit and pump
the liquid refrigerant.
Once the charging has been completed open the
gas tap so that the unit is ready to be started.
20
A Internal unit
B Energy exchanger
R410A

ELECTRIC LINES INLET
Internal unit
The holes for passing the electric lines are on the
upper part of the unit.
Remove the protection cover of the hole selected.
Insert the connection cable.
Pass the cable between the 2 expansion tanks
and and insert it behind the electrical panel. (see
figure)
Connect the cable to the main isolator switch.
Carry out the connection in accordance with the
electric connection layout .
Isolator switch
Connect the line to the main isolator switch inside the
electrical panel.
The minimum section is calculated using a cable type
FG7(0) R 0,6/1 KV .
It is used a different type of cable, the section must be
recalculated by the designer of the electrical system.
STANDARD UNIT
UNIT WITH ELECTRIC
RESISTANCES
Size Voltage SECTION (mm 2 ) SECTION (mm 2 )
31
61
61
Energy exchanger
The holes for passing the electric lines are present on
the small cover panel of the terminal strip.
Remove the small panel
MIN MAX MIN MAX
230/1/50 4 35 16 35
230/1/50 16 70 35 70
400/3/50 4 35 6 35
Remove the fairlead from the hole selected.
Make a hole in the fair lead and insert the
connection cable.
Carry out the connection in accordance with the
electric connection layout .
5 - ELECTRICAL CONNECTIONS
21
A Power connections inlet
B Signal connections inlet
GAIA 31
GAIA 61
230/1/50
400/3/50
B A
L1
A Power connections inlet
B Signal connections inlet
L
QS1
N
QS1
L2
L3 N
A
B
PE N L
PE N L3 L2 L1

5 - ELECTRICAL CONNECTIONS
CONNECTION BETWEEN INTERNAL UNIT AND ENERGY EXCHANGER
Carry out the connections following the layout shown
To make the connections press the lever of the clamp with a screwdriver,
insert the cable and release the lever.
Ensure that the cable is correctly inserted and blocked in the clamp.
Once the connections are made block the cables on the supports present
on the base of the electric panel using a stay.
The connection terminal strips may be the overlapping kind.
Please refer to the figure shown to identify the clamp by its numeration.
Section of the connection cables:
Min. : 1,5 mm 2 AWG 15
Max. : 2,5 mm 2 AWG 13
X1
230/ 1 / 50
L1
11
FU3
N1
12
X1
X1
XV
PE
PE
POWER SUPPLY connection
CABLE SIGNAL connection
3
8
XC1
12
7
22
XC5
13 14 15 16
1 2 3 4
X1
X1
Electric panel:
connections position
400/ 3 / 50+ N
XV
L1 L2 L3
11 12 13
X1
25 26 35 36
9 10 6 5
PE
PE

OUTDOOR AIR PROBE
POSITIONING
The sensor must not be influenced by factors that can
cause a false reading (for example direct sun rays, air
expelled by the fan or other sources, contact with the
unit structure or other heat sources, accumulation of
snow/ice).
Example for the positioning of the external probe:
A Attic
B Underneath a terrace
C If attached to external wall provide a small
roof framework
NORTH positioning to North enables to avoid direct
thermal radiation from the sun.
To position the fresh air probe:
Unscrew the fixing screws and remove the cover
of the probe .
Fix the base of the probe to a wall using suitable
pressure bolts .
Carry out the electrical connections
Reposition the cover and fix with the screws .
CONNECTION
The outdoor air probe can be connected either to the
energy exchanger or, alternatively, to the internal unit.
Section of the connection cables:
Min. : 1,5 mm 2 AWG 15
Max. : 2,5 mm 2 AWG 13
5 - ELECTRICAL CONNECTIONS
Probe connected to the INTERNAL unit Probe connected to the EXTERNAL unit
Max 20 m.
13
1
XC5
X1
14
2
X1
X1
23
Max 20 m.
3
8
NORD
XC5
X1
12
7
X1

The keypad can be placed in a remote position for two
different reasons :
• possibility of remote interfacing with the unit;
• to be used as an ambient thermostat with
temperature management by the booster.
In this case, the dip-switch D must be in OFF(fig.3)
For the remotely install the keypad in ambient, it is
necessary the accessory:
TASRX - Multifunction keypad support
Install the keypad away from heat sources (heating
unit, sunrays, kitchen) and from doors/windows etc.
To position the support (accessory):
• Remove the upper cover.
• Carefully move the electronic cards.
• Mark out the fixing holes using the base of the
support as a template.
• Make a hole in the wall and fix using suitable screws
and pressure bolts.
In case of installations with radiant panels the humidity
sensor on the keyboard allows to prevent the
condensate during the summer operation.
5 - ELECTRICAL CONNECTIONS
MULTIFUNCTION KEYPAD AT REMOTE POSITION
• Carry out the connections following the layout
shown.
• Position the dip-switch D as in Fig. 4
• Once the connections are made block the cables on
the supports present on the base of the electric
panel using a stay.
24
1
2
3
4A
OK 1,5 m 1,5 m
A MAX 80 m.
B
XC5
38
2
20
C
A built-in card
B keypad support
C connection cable
3x0.34 mm 2 shielded
D dip-switch :
1 2 3 4
unit keypad 4B ambient thermostat
D

BOOSTER MANAGEMENT
It is possible to manager up to 3 boosters: they can be
controller by HID-H1 keypad and room thermostats.
HID-H1M can controls also 2 boosters together.
Set the unit parameters (by pwd) in function of the type of
system :
R1 Par. 871 pump control 0= FROM digital input,
1= From HID-H1M, 2= Both
R2 Par. 909 pump control 0= FROM digital input,
1= From HID-H1M, 2= Both
R3 Par. 910 pump control 0= FROM digital input,
1= From HID-H1M, 2= Both
A Built-in card
R1 Booster 1 pump control
R2 Booster 2 pump control
R3 Booster 3 pump control
EXAMPLE 1 - unit configured with:
• HID-H1M keypad on board
• Booster 1 standard
• Booster 2 mixed (option)
• Booster 3 mixed (option)
Booster 1:
• High temperature
• Setpoint defined by par 51 and 52
• Request from room thermostat (terminals 42 and 41)
Booster 2:
• Mixed
• Setpoint defined by par 55 and 56
• Request from room thermostat (terminals 46 and 45)
Booster 3:
• Mixed
• Setpoint defined by par 57 and 58
• Request from room thermostat (terminals 8 and 7)
EXAMPLE 2 - unit configured with:
• HID-H1M keypad in ambient
• Booster 1 standard
• Booster 2 mixed (option)
• Booster 3 mixed (option)
Booster 1:
• High temperature
• Setpoint defined by par 51 and 52
• Request from room thermostat (terminals 42 and 41)
Booster 2:
• Mixed
• Setpoint defined by par 55 and 56
• Request from room thermostat (terminals 46 and 45)
Booster 3:
• Mixed
• Setpoint defined by par 57 and 58
• Request from HID-H1M keypad
5 - ELECTRICAL CONNECTIONS
25
E1
E2
Main menu
configuration
XC5
A
unit
Booster 1 par 871 = 0
Booster 2 par 909 = 0
Booster 3 par 910 = 0
Booster 1 par 871 = 0
Booster2 par 909 = 0
Booster 3 par 910 = 1
R3
R3
Circuit 1 (par.871)
Circuit mixed
R2
R2
41
42
45
46
7
8
R 1
R 2
R 3
R1
R1

INTERNAL UNIT OPTIONAL CONNECTIONS
Summer - winter remote switch
Permits the change in operating mode from heating to
cooling by an external control.
Main menu
configurazione
Configuration paramenters
21 = 1 switch mode from unit to keyboard
21 = 0 switch mode from digital inlet
Second set switch (2)
By an external control, it allows to select a second
room setpoint optimized for a lower energy
consumptions.
The input is always enabled and so the setting by the
parameter is not necessary.
The control enables the ECO set of all the boosters,
with priority for the keypad.
From the HID-H1M keypad on board:
Economic isolator switch
Water reset - segnale 4-20 mA (3)
Water reset
The function enables the correction of the system
water setpoint based on an external signal type 4-20
mA or 0-10v.
The function acts simultaneously on all the booster
sets.
See details on page 35.
Water reset - segnale 0-10V (3a)
Supervisor (4)
The unit can be connected to ELFOControl or an
external supervisor system.
In this case follow the connections as shown.
Main menu
configuration
macchina
unit
Configuration paramenters
315 ModBus supervision serial address
316 Baud Rate (0=4800 / 1=9600 2=19200) supervision serial
317 Parity 0=NO / 1=Odd 2=Even supervision serial
5 - ELECTRICAL CONNECTIONS
configurazione
communication
26
1
2
3
3a
4
CONNECTIONS
N° of Section Nominal Impedance Recommended
Ref connection (mm 2 ) capacity characteristics cable
AP5
cables Min Max pF/m
2 twisted and
shielded
-
+
GND
XC5
21
22
XC5
XC5
29
30
XC5
47
48
0,22 0,35

PRELIMINARY CHECKS
6 - START-UP
The following check list is a brief reminder of the points to check and of the operations to perform to start-up the unit.
For details on the points mentioned in the check list refer to various chapters of the manual.
Preliminary checks √
1 Are the functional spaces of the internal unit and the energy exchanger being observed ?
2 Is the section of the cooling lines correct ? Have the supplied sealing couplings been used ?
3 Does the length of the cooling lines exceed 20 m ?
4 Is the height difference in the cooling lines less than 15 m ?
5 Are there siphons every 6 m going back up on the gas line ?
6 Have emptying and additional load been carried out ? Was there a visual check for oil / leaks?
7 Are the anti-vibration supports present and level?
8 Is the soundproof carter mounted ?
9 Is the water filter from the waterworks inlet correctly installed?
10 Are the inlet and outlet of the water lines correct ?
11
If there are intercepting units present (heads/valves), are the unit circulator/s in arrest due to lack of water
flow?
12 How was the system created ? Is there a minimum water content in circulation ?
13 Are the anti-vibration joints on the hydraulic connections present?
14 Was the system loaded, placed under pressure and was the air let out?
15 Was the solar panel control panel sensor assembled on the GAIA accumulation?
16 Was the condensate produced by the energy exchanger drained correctly? Can it freeze ?
17 Is the capacity of air to the energy exchanger adequate ? Is there air recirculation ?
18 Have the electrical connections to the energy exchanger been made?
19 Is the external air sensor positioned correctly?
20
Is the keyboard positioned on board the unit or in the environment? Does it act as a thermostat or as a
control keyboard ?
21 Have optional electrical connections been made ? (summer/winter, second set, etc….)
22
Is the power supply correct ? 230/1/50 or 400/3/50 ?
Is the available power supply sufficient ?
23 Is the booster circuit/s connected to the control circuit (digital inlet or HID-H1 in the environment) ?
27

START-UP SEQUENCE
6 - START-UP
Start-up sequence √
1 Has the carter resistance been charged for at least 8 hours ?
2 Set date and time
3 Check refrigerating circuit/charge function
4 Calibrate thermostatic mixing valve
5 Set the thermal rise of the boosters
6 Calibrate recirculation sanitary (if present)
7 Configure the ventilation of the energy exchanger (if channeled)
8 Enable solar (if present)
9 Set absorbed power limitation function (if necessary)
10 Personalise system water set-point
11 Personalise system climatic curves
12 Personalise Water reset curve (if present)
13 Personalise anti-dew compensation (if radiant panels are present)
14 Sanitary water personalisation
15 Personalise anti-legionella scheduling
16 Personalise environment scheduling
28

ANOMALIES IN ACTIVATION
6 - START-UP
PROBLEM CAUSE SOLUTION
I01 flow alarm
system with insufficient pressure, air not
adequately let out, dirty sludge remover.
compressor no alarm signal activates water temperature out of functioning limits
i 13 Alarm water temperature out of functioning limits
unit in low pressure
unit in high pressure
closed taps
29
place under pressure, check load gauge,
let air out (reset alarm and proceed to let
air out, clean sludge remover)
TEMPORARILY disable parameter 19.
(password protected)
ATTENTION : the PROLONGED function
out of the limits may irreversibly damage
the unit
TEMPORARILY disable parameter 19.
(password protected)
ATTENTION : the PROLONGED function
out of the limits may irreversibly damage
the unit
open internal unit faucets and energy
exchanger
insufficient charge check coolant load
load not executed
leak in piping execute leak search
excessive load check coolant load
insufficient energy exchanger air capacity
(summer)
booster circulator does not start missed call from HID-H1 or by digital inlet
clean battery.
check if supply and return are obstructed
by obstacles,
check air capacity
check if call (from 71/hid-h1) is configured
correctly.

REFRIGERANT CIRCUIT
1. Visually check the refrigerating circuit: the
presence of oil stains can mean leakage (caused,
for example, by transport, handling or other).
2. Open the cocks of the refrigerator circuit, if there
are any.
3. Check that the refrigerating circuit is under
pressure:
- use the unit pressure gauges, if present, or some
service pressure gauges.
4. Ensure that all the service outlets are closed with
the proper caps; if caps are not present a leak of
refrigerant is possible.
HYDRAULIC CIRCUIT
1. Before realizing the unit connection make sure that
the hydraulic system has been cleaned up and the
clearing water has been drained .
2. Check that the water circuit has been charged and
pressurised .
3. Check that the cut-off valves on the circuit are in
the "OPEN" position.
4. Check that no air is present in the circuit, if
required, evacuate using the air bleeding valve
placed at the system's high points.
5. When using antifreeze solutions, make sure the
glycol percentage is suitable for the type of use
envisaged
Glicol by weight (%) 10 20 30 40
Freezing temperature (°C) -3.9 -8.9 -15.6 -23.4
Safety temperature (°C) -1 -4 -10 -19
ELECTRICAL CIRCUIT
1. Verify that the unit is connected to the ground
plant .
2. Check tightening of the conductors: the vibrations
caused by handling and transport might cause
loosing .
3. Feed the unit by closing the sectioning device, but
leave it on OFF.
4. Check the tension and line frequency values which
must be within the limits:
230/1/50 + / - 6%
400/3/50 + / - 6%
On 400/3/50 unit check that the phases unbalancing
must be lower than 2%
6 - START-UP
30
Example:
DATE AND HOUR
Set the date and current hour in the
multifunction keypad.
Insert the multifunction keypad in the support
present on the unit. (The display will be turned on
in the system management mode.)
Main menu
1)
2)
3)
COMPRESSOR CRANKCASE RESISTANCES
Feed the oil resistances on the compressor crankcase
at least 8 hours before the start compressor :
at the first unit start-up
L1 L2 L3
388V
after each prolonged periods of inactivity
1. Feed the resistances closing the unit isolator
(sorter??).
2. Control the resistances electrical absorption to be
sure that they’re function .
3. Carry out start-up only if the compressor crankcase
temperature on the lower side must be higher at
least of 10° C than the outside temperature.
Do not start the compressor with the crankcase oil
below operating temperature .
date and hour
377V
379V
388 + 379 + 377
= 381 (A)
3
MAX - A = 388 – 381 = 7
S =
7
A
x 100 = 1,83 OK
The working out of the limits can cause irreversible
damages and voids the warranty.
day
month
year
hour

REFRIGERANT CHARGE CHECK
The unit can be in DHW mode.
It is important that during the measurements :
- there is enough charge to maintain the unit in
operation
- there are no mode changes (from DHW to the
installation or vice versa)
Position system general switch at "On"
Position main switch on unit side at “I”.
The green operating indicator lights up.
On the multifunction keypad:
Select the required operating mode.
Select required system control
If the water temperature is < 25°C in heating or > 30°C
in cooling, the unit will start late.
Modify the following parameters (by pwd) to allow
the unit operating at the 50% :
382 Min Vcc = 4,9 (compressor)
383 Max Vcc = 5,1 (compressor)
386 Nominal Vcc = 5 (compressor)
495 MaxFan = 50 (ventilation)
496 MinFan = 49 (ventilation)
(note the initial value so it can be reset at the end
of the tests)
·wait at least 15 minutes after unit start up before
executing the readings
NOTE: the sanitary hot water tap must be opened
in order for the temperature itself in the
accumulation to remain at 30 - 40 °C.
Subcooling calculation :
= temperature read on the high pressure gauge
- temperature detected before the liquid receiver
The correct subcooling is between 1,5 and 2,5 °C
If the values are higher remove gas from the liquid
pipe with unit in operation
If the values are lower add gas, with insufficient
charge the liquid light displays the presence of
bubbles.
Wait about 20 minutes to stabilize the unit
Repeat the measure
If necessary add / remove gas
Once reached the optimal charge, reset the
parameter to their original value.
6 - START-UP
31
Main menu
configuration
unit
Compressor
Ventilation

6 - START-UP
SETTING OF THERMOSTATIC MIXING VALVE BURN-PROOF
Settable, standard setting : 48°C
Regulation of the valve temperature:
closed = 30 °C
open = 60 °C
1 full turn ~ 4 °C
Setting sequence :
release the valve (see below )
measure the output temperature
unscrew the cap fixing screw
lock the valve
Locking / release
1. unscrew the cap fixing screw
2. remove the cap
3. screw the locking nut
4. reposition the cap, screw the cap fixing screw
1 2
3 4
32
Settable

BOOSTERS
Pump head setting
Thanks to the circulator in continuous current, it is
possible to set the delta T nominal system that is
maintained constant through the variations of the loading
conditions.
1. set the nominal temperature difference for each
booster present with parameters (by pwd):
circuit 1 par. 866 DeltaTPumpC1
circuit 2 par. 896 DeltaTPumpC2
circuit 3 par. 905 DeltaTPumpC3
2. activate the pump of each booster :
- from multifunction keypad (increase or decrease the
DHW RECIRCULATION CALIBRATION
Normally is it sufficient to enable the recirculation
through time slots, rather than through changing the
ON-OFF cycle of the circulator.
ACS recirculation, if foreseen in the system, is carried
out by making the sanitary water circulate through the
unit pump.
The pump alternates ON and OFF cycles with duration
that may be set by parameters (password protected):
p441 Recirculation Time OFF
p440 Recirculation Time ON.
The recirculation function is active only at the times
foreseen by the ACS scheduler (maintenance+
recirculation mode, accumulation + recirculation mode)
see page 36.
The parameters are the same that manage the antistratification
recirculation in the ACS accumulation.
The recirculation still causes some inefficiencies
(thermal dispersions in system piping etc.) therefore
duration and frequency will have to be optimised for the
system.
The unit is shipped with closed calibration tap.
It is possible to calibrate the recirculation capacity
through tap "A".
VENTILATION
NOMINAL CAPACITY CHANGE
Based on installation conditions, it is possible to change
the nominal speed of the fan.
Menu:
Main menu > configuration > unit > all
SOLAR
If the solar circuit is present, enable the function as the
menu on the side.
The solar activates when the Solar temperature > 8 °C
than the temperature in the accumulation, and remains
active until 80 °C.
6 - START-UP
33
set-point rotating the center key)
- by the calling from digital input
3. detect the thermal rise on the present reboots
from the unit conditions .
Main menu
configuration
Main menu
configuration
A DHW recirculation enabling tap
par (by pwd)
495 MaxFan 70% = ducted
Main menu
configuration
unit
unit
unit
Circuit 1
Circuit mixed
DHW
A
60% = non ducted
DHW (par.420)

ABSORBED CAPACITY LIMITATION
If necessary is possible to limit the capacity absorbed
by the unit to a prefixed value.
par
26 ENPowerLimit 0=disabled,1=enabled
177 LimitePW set the maximum capacity in kW
FINAL SETTINGS
ID Description Extended description
51 SetCool Summer Set Point
52 SetHeat Winter Set Point
53 SecondSetC Summer secondary SetPoint
54 SecondSetH Winter secondary SetPoint
55 SetCoolC2 Summer Set Point circuit 2
56 SetHeatC2 Winter Set Point circuit 2
57 SetCoolC3 Summer Set Point circuit 3
58 SetHeatC3 Winter Set Point circuit 3
59 SecondSetC2 Summer secondary SetPoint circuit 2
60 SecondSetH2 Winter secondary SetPoint circuit 2
61 SecondSetC3 Summer secondary SetPoint circuit 3
62 SecondSetH3 Winter secondary SetPoint circuit 3
SYSTEM WATER CLIMATIC CURVES
Set point compensation on outdoor temperature
Enable the function by changing the:
1. Parameter 4 On compensation (0=No,1=Cool,
2=Heat,
2. 3=Always)
3. Return to the main screen
4. Go back again in the "External T. Correction"
menu”
The correction is enabled for each reboot.
A - Summer.
With outside low temperatures the refrigerant
requirements are reduced. The internal comfort can
also be obtained with a set-point higher than standard.
The correction is added to the set-point (increased
with the decrease in temperature).
B- Winter.
With outside mild temperatures the thermal
requirements are reduced.
The internal comfort can also be obtained with a lower
set-point. The correction is subtracted from the setpoint
(increased with the decrease in temperature).
Es: se temp. Ext. > 114, set water = par 52 -117
6 - START-UP
PERSONALIZATION OF THE SYSTEM WATER SET POINT
Set the setpoint for the boosters.
34
Main menu
configuration
Main menu
Main menu
configuration
116
R1 R2 R3
configuration
unit
unit
configuration
ESTATE
INVERNO
Summer Winter
112
unit
T ext
113
Setpoint
Configuration
Demand limit
115
Water Reset
Set point
112 120 126 Ext. temp. min. summer correction
113 121 127 Outdoor temp. max. summer correction
114 122 128 Ext. temp. max. winter correction
115 123 129 Ext. temp. min. winter correction
116 124 130 Summer correction max. value
117 125 131 Winter correction max. value
117
T ext
114

WATER RESET (WATER CLIMATIC)
Enable the function by changing the:
1. Parameter 5 enable water reset (0=No,1=Cool,
2=Heat, 3=Always )
2. Return to the main screen
3. Go back again to the "Water reset" menu”
The function operates at the same time of all the
booster sets.
The function enables the correction of the system
water setpoint based on an external signal type 4-20
mA or 0-10v.
A - Summer.
If the refrigerator requirements are low the set point is
increased.
The correction is added to the set-point (increased as
the external temperature decreases).
B - Winter.
If the thermal requirements are low the set point is
decreased.
The correction is subtracted from the set-point
(increased with the decrease in temperature).
ANTI-DEW COMPENSATION
The function is necessary in applications with radiant
panels and keyboard in environment (environment
thermostat).
The set point is limited downwards in order to avoid
the formation of condensate on the floors.
The function may be enabled through parameter 27, it
is only active in cooling.
6 - START-UP
35
Main menu
configuration
Summer ESTATE
Winter
INVERNO
141 140
WR=min WR=max
139
Setpoint
Configuration paramenters
5 Water reset enabling 0=No 1=Cool 2=Heat 3=Always
135 It sets the WR signal: 0 = 0 - 10v, 1 = 4 - 20 mA
136 Max. value of the Winter WR correction
137 winter max. correction signal
138 winter min. correction signal
139 summer correction max. value
140 summer max. correction signal
141 summer min. correction signal
Main menu
unit
configuration
136
unit
137 138
WR=max
Water Reset
Configuration paramenters
27 Anti-dew compensation enabling
Configuration (par. 5)
Water reset
WR=min
configuration

DHW
The unit always leads the DHW to the setpoint p429
(by pwd) value.
During the storage phase the temperature drops until
par 432 (by pwd).
During the maintenance phase the temperature drops
until par 431 (by pwd)..
It is better to schedule the maintenance phase at night
and during the periods of reduced use of DHW.
If the ACS set is changed, change the calibration of
the thermostatic mixing valve.
SCHEDULING
The scheduling allows to set the daily time bands and
to allocate the destre operating mode :
Maintenance
Maintenance + Recirculation
Storage + Ricirculation
Storage
For details see Dhw program.
ANTI-LEGIONNAIRES SCHEDULING
The scheduling allows to set :
Cadence:
Disabled
Weekly
Monthly
Annual
Day
Start hour
6 - START-UP
36
Main menu
SET
p 429
p 432
p 431
Main menu
Main menu
configuration
scheduling
scheduling
unit
A
DHW
ambient
DHW
programs
weekly
M
Name modification
anti-legionnaires

ACTIVE AMBIENT SCHEDULING
The scheduling allows to set the daily time bands and
to allocate the destre operating mode:
Comfort
Economic
Off
For details see Room scheduling.
STARTING REPORT
Reading the objective operating conditions is useful for
checking the unit over time.
With unit of full load, namely in stable conditions and
close to those of work, take the following data:
- Voltage and general absorptions with unit at full
load
- Absorption of varied electrical loads (compressors,
fans, pumps etc)
- Temperatures and capacities of different liquid
(water, air) in the inlet and outlet of the unit.
- Temperature and pressures on the characteristic
points of the refrigerating circuit (compressor
discharge, liquid, intake).
The readings should be stored and made available
during maintenance .
6 - START-UP
37
Main menu
Scheduling
ambient
programs
weekly
name modification

Environment thermostat mode: menu structure
MAIN MENU
System controls
Stata *
System modalities
Alarms *
Configuration *
Scheduling
Date and hour
Password
Off
Comfort
Economy
Automatic
Party
DHW only
Base Info
Keypad Info
Unit stata
Stata I/O
DHW
Heating
Cooling
Active alarms
Alarm log
Alarm reset
Log reset
Keypad
Unit
System’s variables
Unit
DHW
Anti-legionnaires
* Visible only after having entered the password
7 - CONTROL
Keypad
Setpoint
Language
Ven. 17/10/08 18:02
Stato ECO
Setpoint 20.7 100 %
T Amb 18.0
T Ext 45.0
All the parameters
Weekly
Programs (7)
Name modification
Weekly
Programs (3)
Name modification
38
id1 timepsw
id10 minielfo Ecc...
setcool
setcooleco
setheat
setheateco
Mant. /Mant+ric / acc+ric / acc.
Cadence : disabled / weekly / monthly / annual
Day
Start hour

Unit interface mode : menu structure
MAIN MENU
System controls
System modalities
Stata *
Alarms *
Configuration
Scheduling
Date and hour
Password
Off
Comfort
Economy
Automatic
DHW only
Heating
Cooling
Base Info
Keypad Info
Unit stata
Stata I/O
DHW
Active alarms
Alarm log
Alarm reset
Log reset
User parameters
Configuration Menu *
Unit
DHW
Anti-legionnaires
* Visible only after having entered the password
7 - CONTROL
Keypad
Unit
Ven. 17/10/08 18:02
Stato ECO
Setpoint 20.7 100 %
T In 18.0
T ACS 45.0
System’s variables
Weekly
Programs (7)
Name modification
Weekly
Programs (3)
Name modification
39
Keypad (id1,id10…...
Language
All the parameters
Mant. /Mant+ric / acc+ric / acc.
Cadence : disabled / weekly / monthly / annual
Day
Start hour

7 - CONTROL
GAIA after the fisrt start-up, performed by the Installer or the CLIVET Assistance Technical Service, is controlled for an
“automatic” operating and there’s no need of further interventions.
The user must therefore perform the Start-up and Shutdown operations using the multifunction keypad or the remote
switch (if present).
Start up
Position system general switch at "On"
Position main switch on unit side at “I”.
The green operating indicator lights up.
Press to access to the “System mode” menu.
Rotate to select the desired mode between Heating and
Cooling.
Press to confirm.
Press to access to the “System controls” menu.
Rotate to select the desired mode among the available.
Press to confirm.
SEASONAL CHANGE - Heating - Cooling.
Press to access to the “System mode” menu.
Rotate to select the desired mode between Heating and
Cooling.
Press to confirm.
40
Fri. 17/10/08 18:02
Status ECO
Heating
Amb T Cooling 20.7 100 %
Out T 18.0
DHW T 45.0
Fri. 17/10/08 18:02
Status ECO
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0
Main Menu
System controls
Off
System modalities Comfort
Economic
System enabling
Automatic
Stata
Fri. 17/10/08 18:02
Status ECO
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0
Fri. 17/10/08 18:02
Status ECO
Heating
Amb T Cooling 20.7 100 %
Out T 18.0
DHW T 45.0
Fri. 17/10/08 18:02
Status ECO
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0

Modification of the ambient temperature
Shutdown
Press to access to the “System controls” menu.
Rotate to select the “Off” control.
Press to confirm.
Press to turn off the unit.
7 - CONTROL
If the multifunction keypad is set as room thermostat it is possible to change the value of the desired
temperature.
Rotate to change immediately the setpoint.
Press to confirm.
41
Fri. 17/10/08
Setpoint
18:02
Status Min ECO 8.0
Amb T Max 20.7 24.0 100 %
Out T 21.7 18.0
DHW T 45.0
Fri. 17/10/08 18:02
Status ECO
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0
Main Menu
System controls
Off
System modalities Comfort
System enabling
Economic
Automatic
Stata
Fri. 17/10/08 18:02
Status OFF
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0

Room scheduling
7 - CONTROL
If the system configuration allows, in addition to the start-up and shutdown operations, the multifunction keypad allows
the personalization of the hourly and weekly scheduling.
Press.
Rotate to select the “Scheduling” menu.
Press.
Rotate to select the “Ambient” menu.
Press.
Rotate to select the “Programs” menu.
Press.
Rotate to select the program.
Press.
Press to access to the modification display.
Press to confirm the choice.
Select and confirm:
Comfort = Com
Economic = Eco
Off = Off
Press the previous Menu key and confirm to save the modifications.
Press to go back at the main screen.
42
Stata
Scheduling
Date and hour
Password
Prog 1
Prog 2
Prog 3
Prog 4
Com-
Eco -
Off -
Main Menu
Scheduling Menu
Ambient
DHW
Scheduling Menu
Weekly
Programs
Name modification
Programs
P rog 1
0 4 8 12
16 20 24
Hour : 05:00 Val : Eco
Com-
Eco -
Off -
P rog 1
0 4 8 12
16 20 24
Hour : 18:00 Val : Eco
Com-
Eco -
Off -
P rog 1
To save the
modification
OK
0 4 8 12
16 20 24
Hour : 18:00 Val : Eco
Fri. 17/10/08 18:02
Status ECO
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0

Dhw program
7 - CONTROL
In addition to the start-up and shutdown operations, the multifunction allows the personalization of the hourly and
weekly programming of the domestic hot water. Details on page 43.
Press.
Rotate to selct the “Scheduling” menu.
Press.
Rotate to select the “DHW” menu.
Press.
Rotate to select the “Programs” menu.
Press.
Rotate to select the program.
Press.
Press to modify the flashing segment of the hour.
Press to confirm the choice.
Select and confirm:
Maintenance = Mant
Maintenance + Recirculation = Mant + Ric
Storage + Recirculation = Acc + Ric
Storage . = Acc
Press the previous Menu key and confirm to save the modifications.
Press to go back at the main screen.
43
Stata
Scheduling
Date and hour
Password
Prog 1
Prog 2
Prog 3
-
Acc -
Ric -
Main Menu
Scheduling Menu
Ambient
DHW
Scheduling Menu
Weekly
Programs
Name modification
Programs
P rog 1
0 4 8 12
16 20 24
Hour : 05:00 Val : Acc+ Ric
-
Acc -
Ric -
P rog 1
0 4 8 12
16 20 24
Hour : 08:00 Val : Acc+ Ric
-
Acc -
Ric -
P rog 1
To save the
modification
OK
0 4 8 12
16 20 24
Hour : 21:00 Val : Acc
Fri. 17/10/08 18:02
Status ECO
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0

Date and hour
7 - CONTROL
The date and hour settingg is requested at the first keypad use (batteries insertion), in case of replacement or after the
reset.
Press.
Rotate to select the “Date and hour” menu.
Press.
Rotate to select the “Month”
Press.
Rotate to modify the value.
Press to confirm the value.
Perform the operation by year, mounth, day and minutes.
Press to go back at the main screen.
44
Status
Scheduling
Date and hour
Password
Main Menu
Clock settings
Day 18
Month 6
Year 2009
hour 10:00
Clock settings
Day 18
Month 7 6
Year 2009
hour 10:00
Clock settings
Day 18
Month 7
Year 2009
hour 10:00
Fri. 18/07/09 10:00
Status ECO
Amb T 20.7 100 %
Out T 18.0
DHW T 45.0

Alarms
7 - CONTROL
Breakdowns are indicated by the luminous orange indicator present on
the side of the unit and the appearance of the 'Alarm underway' symbol
on the multifunctional keypad.
In case of alarm shutdown the unit and immediately call the service
center.
On the multifunction keypad keep the central key pressed to pass in
UNIT mode.
Press.
Rotate to select the ACTIVE ALARMS and confirm.
Press.
Alarm visualization.
Press.
Rotate to select the LOG RESET
Press to confirm the reset.
Press to go back at the main screen.
Repeated reset can cause irreversibile damages as
malfunctioning of the system itself.
45
E03
Alarm Menu
Active alarms
Alarm log
Alarm reset
Log reset
Active alarms
Out. Temp. probe
Date 08/08/09
Hour 12:45
Alarm Menu
Active alarms
Alarm log
Alarm reset
Log reset
Alarm Menu
Active alarms
Confirm Alarm log Reset
OK
Alarm reset
Log reset
Fri. 17/10/08 18:02
Status ECO
Setpoint 20.7 100 %
T IN 15.0
T OUT 26.0
In case of doubt please contact an Assistance Centre.

ALARMS
Breakdowns are indicated by the luminous orange
indicator present on the side of the unit and the
appearance of the 'Alarm underway' symbol on the
multifunctional keypad.
To display the alarms place the multifunction keypad
in the unit interface mode.
Display the active alarms.
To reset the alarm remove its cause and reset the
active alarm.
Before resetting an alarm identify and remove the
cause that generate it.
Repeated reset can cause irreversibile damages as
malfunctioning of the system itself.
LIST OF ALARMS - tab1
N° Description possible cause - solution
e00 Base keypad Timeout
7 - CONTROL
Keyboard not communicating with unit
faulty wiring, keyboard not well inserted on the base, faulty keyboard or base
E01 Input temp. probe utility side faulty or disconnected sensor A
E02 Supply temp. probe utility side faulty or disconnected sensor A
E03 Outside temp. probe faulty or disconnected sensor A
E04 Coil/output temp. probe source faulty or disconnected sensor A
E05 Return temp. probe source side faulty or disconnected sensor A
E06 Temp. probe in accumulation faulty or disconnected sensor A
E07 AUX. heater temp. probe utility faulty or disconnected sensor A
E08 Pressure 1 probe (HP) faulty transducer, faulty/defective wiring A
E09 Pressure 2 probe (LP_TE) faulty transducer, faulty/defective wiring A
E10 Ext. RH% probe faulty sensor, faulty/defective wiring A
E11 Water Reset input faulty wiring, faulty configuration of the type of signal (0-10 or 4-20mA signal) A
E12 Demand Limit input faulty wiring, faulty configuration of the type of signal A
E13 Phase monitor faulty phase sequence, power supply voltage out of limits, voltage sags A
E14 Capacity reading Timeout
faulty/disconnected wiring of serial connection to the inverter, faulty serial port of the inverter
or main card
E15 Solar temperature faulty or disconnected sensor A
E16 High DHW temperature faulty or disconnected sensor A
E17 Low DHW temperature faulty or disconnected sensor A
E18 Discharge Temp. probe faulty or disconnected sensor A
E19 Return temperature probe faulty or disconnected sensor A
E20 Driver disconnection driver not correctly inserted in the base - contact assistance A
A the alarm automatically resets when the cause that set it off ends
46
Main menu
M the alarm manually resets when the cause that set it off ends and a keyboard reset is executed
Keyboard in unit interface mode
Alarms
Active alarms
Alarm log
Alarm reset
Log reset
A
A

LIST OF ALARMS - tab2
N° Description possible cause - solution
E21
E22
Disconnection between the driver and
the thermostatic motor
Source fan thermal / Source pump
thermal
E23 DHW pump thermal
E26
Compressor 1 thermal / Circuit 1
thermal
7 - CONTROL
electronic thermostatic motor not connected A
check transformer outlet voltage and wiring
check fuse FU6
ELEVATED ABSORPTION
check wiring between internal unit and locked fan energy exchanger
anomalies in intake : channels obstructed, supply from a closed environment etc.
drain temperature > 120°C
noise filter overheated or with loose clamps
E32 Inverter alarm alarm coming from inverter
E33 Timeout io alarm
inverter in alarm (problems with power supply voltage, faulty inverter, anomalous absorption
of the compressor)
ANOMALY ON CAN CONNECTION
disconnected wiring, DIP1 frame not correctly configured, lack of power supply to the I/O
card (check T1 outlet and wiring), fuse SF1
E34 Probe in C1 error faulty or disconnected sensor A
E36 Probe error in C2 faulty or disconnected sensor A
E37 Probe error out C2 faulty or disconnected sensor A
E39 Probe error in C3 faulty or disconnected sensor A
E40 Probe error out C3 faulty or disconnected sensor A
F01 High pressure (HP)
F02 Low pressure (LP)
f/F08 Defrosting forcing for low pressure
f/F09 Defrosting stop alarm
excessive coolant load
closed taps
functioning out of limits allowed
SUMMER : energy exchanger battery dirty or obstructed, fan does not work
SUMMER-SANITARY : dirty system exchange or sanitary, dirty sludge remover
WINTER : scarce water capacity, dirty exchanger, dirty sludge remover
refrigerating circuit solenoid valve closed
insufficient load, coolant leaks, closed taps, dirty drier filter, jammed thermostatic
WINTER : energy exchanger battery frozen -dirty-obstructed, fan does not work
energy exchanger battery frozen-dirty-obstructed, fan does not work, sensor on battery defective
or not fixed well
defrosting not ended correctly
frozen-dirty-obstructed battery, sensor on the battery defective or not fixed well, insufficient
coolant load, low water content in the system
F10 Max. discharge temperature alarm compressor drain temperature: insufficient load, electronic thermostatic malfunction M
A the alarm automatically resets when the cause that set it off ends
M the alarm manually resets when the cause that set it off ends and a keyboard reset is executed
47
A
M
M
A/M
A/M
A/M
A/M
A/M

LIST OF ALARMS - tab3
7 - CONTROL
N° Description possible cause - solution A / M
I01 Utility pump flow
I03 Utility freeze alarm
system not under pressure - air must be let out, dirty sludge remover, primary circulator
stopped (mechanical error, burned fuse)
WINTER defrost in anomalous conditions (functioning out of limits)
SUMMER : low capacity and set point too low
I05 AUX heater antifreeze see I03 and I01 M
I06 System charged with utility water scarce system load pressure M
I07 Incongruent T delta
In SUMMER the outgoing temperature is higher than the incoming temperature;
In WINTER the incoming temperature is lower than the outgoing temperature;
Jammed refrigerating circuit inversion valve (check solenoid).
i09 Utility antifreeze prealarm see I03 A
i11
User input water temperature out of
limit of the actual operating mode
i12 DHW Incongruent thermostat
I13 Ambient antifreeze alarm
functioning out of limits
(Example: In SUMMER the system flow temperature is higher than 25 °C; In WINTER the
flow temperature is lower than 20°C)
the compressor has stopped due to reached temperature before having brought the sanitary
accumulation to temperature ; cause : dirty sanitary water exchanger, sanitary parameters
not set correctly
with HID-H1 keyboard used as environment thermostat, if the environment temperature
drops below the antifreeze threshold in winter (e.g. 8°C) the unit will switch to ON to heat the
environment
I14 DHW high temperature alarm the accumulation temperature has exceeded 85 °C (safety thermostat) A
I15 Water charged DHW system (DHW) sanitary water system with insufficient pressure A
I18 C2 Frost alarm see I01 / I03 A / M
I19 C3 Frost alarm see I01 / I03 A / M
A the alarm automatically resets when the cause that set it off ends
M the alarm manually resets when the cause that set it off ends and a keyboard reset is executed
48
M
M
A
A
A
A

USER PARAMETERS LIST
Num. Description Extended description
4 CompExt Enabling of system water setpoint compensation on external temperature (0=No ;1=only in Cool; 2=only in Heat; 3=Always)
51 SetCool system water Summer Set Point
52 SetHeat system water Winter Set Point
53 SecondSetC system water Secondary Summer SetPoint (economical)
54 SecondSetH system water secondary Winter SetPoint (economical)
55 SetCoolC2 system water Summer Set Point secondary circuit 2 (cs2)
56 SetHeatC2 system water Winter Set Point cs2
57 SetCoolC3 system water Summer Set Point cs3
58 SetHeatC3 system water Winter Set Point cs3
59 SecondSetC2 system water Secondary Summer SetPoint cs2 (economical)
60 SecondSetH2 system water secondary Winter SetPoint cs2 (economical)
61 SecondSetC3 system water Secondary Summer SetPoint cs3 (economical)
62 SecondSetH3 system water secondary Winter SetPoint cs3 (economical)
112 CextMaxC External Summer temperature at which maximum correction of system water setpoint takes place
113 CextMinC External summer temperature at which minimum correction of system water setpoint takes place
114 CextMaxH External Winter temperature at which maximum correction of system water setpoint takes place
115 CextMinH External Winter temperature at which minimum correction of setpoint takes place
116 MaxCExtC Maximum correction value of system water setpoint in Summer
117 MaxCExtH Maximum correction value of system water setpoint in Winter
120 CextMaxC2 External Summer temperature at which maximum correction of cs2 system water setpoint takes place
121 CextMinC2 External Summer temperature at which minimum correction of cs2 system water setpoint takes place
122 CextMaxH2 External Winter temperature at which maximum correction of cs2 system water setpoint takes place
123 CextMinH2 External Winter temperature at which minimum correction of cs2 system water setpoint takes place
124 MaxCExtC2 Maximum correction value of cs2 system water setpoint in Summer
125 MaxCExtH2 Maximum correction value of cs2 system water setpoint in Winter
126 CextMaxC3 External Summer temperature at which maximum correction of cs3 system water setpoint takes place
127 CextMinC3 External Summer temperature at which minimum correction of cs3 system water setpoint takes place
128 CextMaxH3 External Winter temperature at which maximum correction of cs3 system water setpoint takes place
129 CextMinH3 External Winter temperature at which minimum correction of cs3 system water setpoint takes place
130 MaxCExtC3 Maximum correction value of cs3 system water setpoint in Summer
131 MaxCExtH3 Maximum correction value of cs3 system water setpoint in Winter
429 SetAccumulo
431 BandaMant
893 CompExtC2
902 CompExtC3
7 - CONTROL
GAIA is set by the factory with default unit parameters to values that can satisfy the greater number of installation cases.
For a detailed customization of the system is however possible to make changes
Set Point sanitary hot water (ACS): temperature of unit internal accumulation. If the ACS set is changed, change the
calibration of the thermostatic mixing valve.
Maximum difference compared to ACS setpoint (limit used in maintenance phase, the phase to schedule in periods of low
ACS consumption)
Enabling of cs2 system water setpoint compensation on external temperature (0=No ;1=only in Cool; 2=only in Heat;
3=Always)
Enabling of cs3 system water setpoint compensation on external temperature (0=No ;1=only in Cool; 2=only in Heat;
3=Always)
49

UNIT PARAMETRES - tab 1
GAIA is set by the factory with default unit parameters to values that can satisfy the greater number of installation cases.
For a detailed customization of the system is however possible to make changes; the following is a list of all unit parameters, with all
the available settings.
Nr Description Extended description
7 - CONTROL
2 CompAmb Enable compensation of environment temperature (0=No 1=Cool 2=Heat 3=Always)
5 WaterReset Enable Water Reset 0=No 1=Cool 2=Heat 3=Always
7 DemandLimitEn Enable Demand Limit 0=None 1=auxiliary release priority 2=compressor release priority 3 = Current measurement
10 MantCoolEn Enable Summer maintenance
11 MantHeatEn Enable Winter maintenance
13 CaldaiaEn Enable boiler + Heat Pump function, 0= not enabled, 1= enabled
21 RemMode
25 RemOnOffMode
26 EnPowerLimit Enable Power Limit
27 EnAntiRug Enable anti-dew compensation
Configure remote inlets 0=Heat/Cool from digital inlet or H/Sanitary only or C/Sanitary only from ID, 1=H/C from
keyboard (digital inlet has no effect)
Configure inlets DI 1=On/Off, 0=thermal request from environment (for non-Gaia units. Enable ID1 as call to environment
thermoregulator)
33 EnControlHC Enable automatic variation of mode change
35 EnCircuiti
118 HExtMinC Enthalpy ext Minimum correction
119 HExtMaxC Enthalpy ext Maximum correction
Secondary configuration 0=1 AT; 1=2 AT; 2=3 AT; 3=1 AT+1 MISC; 4=1 AT+1 MISC+1AT; 5=1 AT + 2 MISC;
6=4AT; 7=1AT+2MISC+1AT; 8=1AT+ 1MISC+2AT
135 TypeWR Configure WR 0=0-10V 1=4-20mA signal
136 MaxCWRH Maximum value of Winter WR correction
137 SWRMAXH Max Winter correction corresponding signal percentage
138 SWRMinH Min Winter correction corresponding signal percentage
139 MaxCWRC Maximum value of correction Summer
140 SWRMaxC MAX Summer correction corresponding signal percentage
141 SWRMinC MIN Summer correction corresponding signal percentage
176 TypeDL Type of signal for the DL 0=AI, 1=From serial
177 LimitePW Limit of absorbed power
187 FSAmperometro Base of ammeter scale on Demand Limit
188 LimI Current limit
247 SetMantCool Summer Maintenance Set Point
248 SetMantHeat Winter Maintenance Set Point
315 Address ModBus supervision serial address
316 Baud Rate Baud Rate (0=4800 / 1=9600 2=19200) supervision serial
317 Parity Parity 0=NO / 1=Odd 2=Even supervision serial
412 CompExtH2OS Comp. Enabling for External Temp. of sanitary water setpoint
413 MaxCompH2OS Maximum correction value external T for sanitary water setpoint
432 BandaAcc Maximum variation allowed inside accumulation during accumulation phase
433 SolarLowTLimit Threshold at which panel emptying due to low external temperature occurs
434 SolarHighTLimit Threshold at which panel emptying due to high external temperature occurs
435 EnAntiLegio Enable antilegionella
436 SetAntilegio Anti-legionella set point
439 EnRicircolo 0=Not managed, 1=Enabled, 2=Only enabled in Heat,3=Only enabled in Cool
440 TempoRicOn Pump On time during recirculation cycle
441 TempoRicOff Pump Off time during recirculation cycle
50

UNIT PARAMETRES - tab 2
442 StarRicircolo Recirculation start time
443 StopRicircolo Recirculation end time
7 - CONTROL
445 CextMaxS External temperature maximum ACS compensation in summer mode
446 CextMinS External temperature minimum ACS compensation in summer mode
455 LowTForceRes Minimum ACS temperature for resistance activation
456 PWHeaterACS Heater power on accumulation
532 SetHeater Antifreeze Resistance Set Point
541 SetfreezeExt Threshold of source water temperature for Freezing Battery Alarm activation
542 SetHeaterExt Threshold of source water temperature for antifreeze resistance activation
560 SogliaExtC Threshold of external temperature under which the boiler is activated
561 IsteresiExt External temperature hysteresis for PDC reactivation
562 TimeBypassALM Alarm transition time from PDC to boiler
563 MinSetHeater Minimum boiler set point value
564 MaxSetHeater Maximum boiler set point value
670 TLimiteCool Inlet water temp under which comp activation in COOL is permitted
671 TLimiteHeat Inlet water temp under which comp activation in HEAT is permitted
724 OffsetRugiada Offset to add to dew temperature for set point calculation
726 OffsetRugiadaC2 Offset to add to dew temperature for circuit 2 set point calculation
727 OffsetRugiadaC3 Offset to add to dew temperature for circuit 3 set point calculation
858 TimeLimitTemp Maximum permanence time for secondary temperature out of limits
864 MaxTempH2OHeatC1 Circuit 1 maximum discharge temperature in HEAT
865 MinTempH2OCoolC1 Circuit 1 minimum discharge temperature in COOL
866 DeltaTPumpC1 Circuit 1 nominal temperature leap
867 BandaDeltaTPumpC1 Centred band for DeltaTPump1
868 MaxSignalPumpC1 Maximum circulator 1 control signal
869 MinSignalPumpC1 Minimum circulator 1 control signal
870 ModoUtilizzoC1 Circuit 1 seasonal activation (1= Only HEAT, 2= only COOL, 3= Always)
871 ChiamataUtilizzoC1 Configure environment call on circuit 1 (0=From digital inlet, 1=From HID-H1, 2=Both)
891 ModoUtilizzoC2 Circuit 2 seasonal activation (1= Only HEAT, 2= only COOL, 3= Always)
892 EnAntiRugC2 Enable circuit 2 anti-dew compensation
894 MaxTempH2OHeatC2 Circuit 2 maximum discharge temperature in HEAT
895 MaxTempH2OCoolC2 Circuit 2 minimum discharge temperature in COOL
896 DeltaTPumpC2 Circuit 2 nominal temperature leap
897 BandaDeltaTPumpC2 Centred band for DeltaTPump2
898 MaxSignalPumpC2 Circulator 2 maximum control signal
899 MinSignalPumpC2 Circulator 2 minimum control signal
900 ModoUtilizzoC3 Circuit 3 seasonal activation (1= Only HEAT, 2= only COOL, 3= Always)
901 EnAntiRugC3 Enable circuit 3 anti-dew compensation
903 MaxTempH2OHeatC3 Maximum discharge temperature in HEAT
904 MaxTempH2OCoolC3 Minimum discharge temperature in COOL
905 DeltaTPumpC3 Circuit 3 nominal temperature leap
906 BandaDeltaTPumpC3 Centred band for DeltaTPump3
907 MaxSignalPumpC3 Circulator 3 maximum control signal
908 MinSignalPumpC3 Circulator 3 minimum control signal
909 ChiamataUtilizzoC2 Configure environment call on circuit 2 (0=From digital inlet, 1=From HID-H1, 2=Both)
910 ChiamataUtilizzoC3 Configure environment call on circuit 3 (0=From digital inlet, 1=From HID-H1, 2=Both)
51

UNIT STATA MENU
During the GAIA operation is possible to visualize the unit status by the values obtained from sensors and from the
main unit operating parameters.
Num. Description UM
1 Current set point °C
2
Actual temperature difference (including
compensation)
3 Timer relative to resource insertion Seconds
4 Dynamic TimeScan relative to resource insertion Seconds
5 External T compensation °C
6 Ambient T Compensation °C
7 Water Reset compensation °C
8 Charge compensation °C
9 Duty Cycle comp °C
10 Compensation on duration °C
11 Utility water input temperature °C
12 Water input temperature °C
13 Auxiliary heater outlet temperature °C
14 Fresh air temperature °C
15 Condensing coil temperature C1 °C
16 Accumulation temperature °C
17 Utility pump 0=Off 1=On
18 Utility secondary pump 0=Off 1=On
20 Condensing pressure C1 Bar
21 Evaporating pressure C1 Bar
22 Auxiliary heater control signal (0-10V) %
23 Boiler command 0=Off 1=On
24 Boiler valve command 0=Off 1=On
25 Relative humidity %
26 Free cooling (On-Off valve) 0=Off 1=On
27 Variable speed compressor (0-10V) %
28 Compressor 1 operating hours hour
29 Comp 1 starts Number
32 Defrosting delay (SeTypeDFR = 0) seconds
33 Defrosting count (SeTypeDFR = 0) seconds
34 Ambient dew temperature °C
35 Mininet: X=node disconnected O=Node connected
36 Electric power absorbed KW
49 Return temperature °C
50 Discharge temperature °C
7 - CONTROL
°C
52
Num. Description UM
51 Operative SuperHeat °C
52 Thermostatic valve opening percentage °C
53 Actual set point in superheating %
54 Secondary circuit 1 current set point. °C
55 Secondary circuit 1 supply temperature °C
56 Secondary circuit 1 return temperature °C
57 Secondary cicalato 1 control signal °C
58 Secondary circuit 2 current set point. %
59 Secondary circuit 2 supply temperature °C
60 Secondary circuit 2 return temperature °C
61 Secondary circuit 2 control signal °C
62 Secondary cicalato 2 control signal %
63
Percentage of secondary circuit 2 valve opening
(100 = fully open)
64 Secondary circuit 3 current set point. °C
65 Secondary circuit 3 supply temperature °C
66 Secondary circuit 3 return temperature °C
67 Secondary cicalato 3 control signal %
68
Percentage of secondary circuit 3 valve opening
(100 = fully open)
69 Temperature of DWH storage high probe °C
70 Temperature of DWH storage low probe °C
%
%

General
Maintenance must be done by authorized centres or by
qualified personnel
The maintenance enables:
- maintain the unit efficiency
- Reduce the deterioration speed to whom every
equipment is subject over time
- assemble information and data to understand the
state of the unit efficiency and avoid possible
damages
Inspections frequency
The inspections should be carried out at least:
- Every year for only the cooling units
- Every six months for the cooling and warming
units
The frequency, however, depends on the use.
in the event of frequent use it is recommended to plan
inspections at close intervals:
- frequent use (continuous or very intermittent use,
near the operating limits, etc)
- critical use (service necessary).
Unit booklet
It’s advisable to create a unit booklet to take notes of the
unit interventions.
In this way it will be easier to adequately note the
various interventions and aid any troubleshooting.
Report on the booklet:
- data
- type of intervention effected
- intervention description
- carried out measures etc.
Standby mode
If a long period of inactivity is foreseen:
- Turn of the power in order to avoid electrical risks
or damages by lightning strike
- avoid the risk of frost (empty or add glycol to the
parts of the system exposed to temperatures
below zero, maintain any anti-freeze resistances
powered)
It’s recommended that the starter after the period of
detention is made by a qualified technician, especially
after seasonal stops or seasonal switch.
When starting, refer to that indicated in the START-UP
section .
Schedule technical assistance in advance to avoid
hitches and to guarantee that the system can be used
when required
8 - MAINTENANCE
53
Water exchanger
It is very important for the exchanger to be able to
provide the maximum thermal exchange. Therefore,
it is essential for the inner surfaces to be clean of dirt
and incrustations.
Periodically check the difference between the
temperature of the supply water and the
condensation temperature.
If the difference is greater than 8 ° C-10 ° C at full
load it is advisable to clean the exchanger
The cleaning must be effected:
- With circulation opposite to the usual one
- With a speed at least 1,5 times higher than the
nominal one
- With an appropriate product moderately acid
(95% water + 5% phosphoric acid
- after cleaning rinse with water to avoid any
detergent residues
Electric fans
Check:
- ensure that the fans and the relative protection
grids are well fixed
- The fan bearings (evident by noise and
anomalous vibrations )
- the terminal protection covers are closed and
the cable holders are properly positioned
Energy exchanger air battery
Accidental contact with the exchanger fins can cause
cuts: wear protective gloves.
It is extremely important that the battery gives the
maximum thermal exchange; therefore, its surface
must be cleaned from dust and deposits.
Remove all impurities from the surface.
Using an air pressure gun, clean the surface of the
battery ensuring that the direction of the air jet is
opposite to that of the motor of the air inducted by
the fan.
Hold the gun parallel to the fins to avoid damages.
Alternatively an aspirator can be used to suck
impurities from the air input side.
Verify that the aluminum fins are not bent or
damaged. In the event of damages, contact an
authorised assistance centre that can 'iron out' the
battery in order to allow an optimal airflow

DRAIN COCKS
Prior to starting the emptying, position the systems
general switch in the 'off' position
Check that the system charging/reintegration tap is
closed. .
The system and DHW discharge are connected only to
one header, whereas the solar one is halfway and
discharges the internal part of the circuit to the top of
the unit.
Screw the connecting nozzle joint to the discharge
attachment.
Connect a conduit to the connecting nozzle and place
in an area suitable for discharge.
Open the unit and system draining taps and all of the
bleeding valves.
Any anti-freeze liquid contained in the system should
not be discharged freely as it is a pollutant. It must be
collected and reused.
SLUDGE REMOVER
The sludge remover “A” separates the impurities
(particles of sand, rust, etc. ...) from the system water
that should clog the plate exchanger.
The impurities are collected in a settling chambre.
Periodically drain the impurities collected through the
tap.
The drain may also be executed with functioning
system.
8 - MAINTENANCE
54
A DHW drain cock
B System draining tap
C Solar draining tap
A
A B
C
C

SAFETY VALVES
The safety valves must be checked periodically.
The near entirety of the leaks is caused by impurities
deposited inside the valve.
To carry out a wash:
1 - manually open the valve
2 - rotate the knob in the sense indicated by the arrow
in the knob.
8 - MAINTENANCE
55

PERIODIC CONTROL SHEET
8 - MAINTENANCE
Controls effected on ……………………..By………………………….of the Company ……………………………………….
√ Structure
Panel fixing
Energy exchanger fan fixing
Energy exchanger battery cleaning
Hydraulic circuit
Charged pressure of water system
Docking joints, caps and shafts
Air in the pipes
Water filter cleaning / sludge remover
Flow switch / differential pressure switch function
Electrical circuit
Capacity contactor status, terminal closing, cable insulation integrity
Voltage and phase unbalancing (no load and on-load)
Absorptions of the single electrical loads
Circuito frigorifero
Leak control *
Check drier filter
Presence of oil stains
Work parameters of the refrigerant circuit (see TECHNICAL INFORMATION section)
Closure of pipe unions, Scrader caps
Regulation and control
Protective device / integrity test : safety valves, pressure switches, thermostats, flow switches etc
Check schedulers, setpoints, compensations, etc...
Control device / integrity test : alarm signalling, thermometers, probes, pressure gauges etc
Notes / interventions recommended to the owner
*European regulation 303/2008:
Refer to the local actuation regulations; in short and as an indication only the regulation prescribes that which follows.
Companies and technicians that carry out installation, maintenance/repairs, leak control and recovery interventions must be CERTIFIED as prescri-
bed by the local regulations.
The leak control must be carried out annually.
56

MALFUNCTIONS
The unit does not heat the
environment (winter)
Unit does not heat
environment sufficiently
The unit does not cool
(summer)
The unit heats too much
(winter)
The unit cools too much
(summer)
Low sanitary water
temperature
Sanitary water initially
comes out cold
system not running
water capacity too low
insufficient coolant load
8 - MAINTENANCE
unit not on see "unit does not start"
unit in alarm check alarm code
jammed energy exchanger
stopped circulators
system water out of temperature
limits
Drawing quantity too high
recirculation system
if the radiant panels have stopped for one or more days, it is necessary to wait
for the system to return operational
check that the energy exchanger battery is free from ice
check that the condensate drain is free from ice
check if the environment thermostats are in call
check circulator fuses FU11, S-F2, S-F3
with system water out of temperature limits the compressor remains disabled for
30 minutes (i13 signal on display)
compressor stopped check fuses FU1 in electrical control board, presence of alarms
the system is in COOLING mode switch to HEATING
check if all hydraulic circuit valves are open
check if water filter is dirty
completely let air of out of the system
check if number of pump turns is set too low
check coolant load
check presence of leaks in the refrigerating circuit
see "the unit does not heat the environment (winter)"
check if the environment thermostats are in call
check scheduling
Reduce drawing quantity
check sanitary setpoint
check in the scheduling menu that in the hours of most frequent use the
accumulation + recirculation phase is active calibrate mixer
check sanitary system (mixers)
check if the recirculation system is present
check that the recirculation is enabled by parameter (check parameter 439)
check that recirculation tap is open
check in scheduler that the maintenance and accumulation phases are combined
to the recirculation function
check circulator fuse FU9
57

MALFUNCTIONS
Compressor doe not start
Unit does not start unit not power supplied
Noisy internal unit
8 - MAINTENANCE
Circulation pump Air in the hydraulic circuit Completely let the air out of the hydraulic circuit
Damage to the pump bearings Replace the pump
system pressure too low check the water pressure on the gauge
Open safety valve faulty / unloaded expansion vase replace / reload the vase
environment control does
not function correctly
Schedule does not function
correctly
keyboard does not work
the water pressure is too high
check the unit ON-OFF switch
check the presence of alarms (red light on)
check the presence of current voltage
check isolator / system circuit breaker
jammed safety valve check the valve, replace it if needed
check unit ON-OFF switch and the isolator on the units electrical control board
check if the display does not light up: correctly insert the keyboard in the base
check fuses FU2, F2 in the electrical control board
check the remote keyboard cables (if present)
check if alarms are present
check panel locking
check if the rear carter is mounted
check if the anti-vibration supports are present
check the water pressure on the gauge and eventually drain the water until the
pressure goes down
does not light up : check fuse F3
lights up but does not show temperature values: check electrical cables
check scheduling instructions
check that the unit is on AUTO
check that the time is correct
58

DIMENSIONALS
Internal unit
SIZE 31 61
Length mm 600 600
Depth mm 800 800
Height mm 2030 2030
Operating weight kg 430 460
Shipping weight kg 250 280
(1) DOMESTIC HOT WATER OUTLET G1/2" M
(2) MAINS INLET G1/2" M
(3) RETURN FROM THE UTILITY INSTALLATION 1° BOOSTER 1" GAS M
(4) SUPPLY TO THE UTILITY INSTALLATION 1° BOOSTER 1" GAS M
(5) RETURN LINE COCK, EXTERNAL PIPE DIAMETER 5/8" (31),3/4” (61)
(6) LIQUID LINE COCK , EXTERNAL PIPE DIAMETER 1/2” (31), 5/8” (61)
(7) ENERGY EXCHANGER CABLES EXIT
(8) ELECTRICAL LINE INLET
(9) SOLAR SYSTEM INLET G3/4" M
(10) SOLAR SYSTEM OUTLET G3/4" M
(11) DHW RECIRCULATION CIRCUIT INLET G3/8" F
(12) AUTOMATIC AIR BLOW VALVE, LEFT WATER SIDE
(13) STANDARD TANK CONNECTION COUPLING
(14) MULTIFUNCTION KEYPAD
(15) HEIGHT-ADJUSTABLE SUPPORT FOOT
15
9 - TECHNICAL INFORMATION
800
7
5
6
625
582
59
2030
9 10
522
433
107
57
600
13 12 8
3 4 16 17
int. 90
61 83 75 83 75 83
285
14
497
Detail C
(16) RETURN FROM THE UTILITY INSTALLATION 2° E 3° BOOSTER 3/4" GAS M
(17) SUPPLY TO THE UTILITY INSTALLATION 2° E 3° BOOSTER 3/4" GAS M
567
2 11 1
C
70
70
637
47.5

Gaia 31 energy exchanger
450
190
23
30
29
28
26
27
A
7
DETT. A
(18) FAN
(19) RETURN LINE COCK , EXTERNAL PIPE DIAMETER 3/4"
(20) LIQUID LINE COCK , EXTERNAL PIPE DIAMETER 1/2"
(21) ELECTRICAL LINE INLET
(22) CONDENSATE DISCHARGE 12.5MM
(23) AIR FLOW PROTECTION GRILLE
(24) UNIT BEARING STRUCTURE
(25) ADJUSTABLE CASING FOR AIR EXHAUST
(26) ANTI-VIBRATION SUPPORT
(27) BOLT M8 X 100
(28) RUBBER WASHER
(29) PLATE WASHER
(30) KNURLED BOLT
Gaia 61 energy exchanger
810
304
18
31
32
35 88 1074 88
1250
9 - TECHNICAL INFORMATION
1304
21
19
20
22
31
33
34
60
430
490
720
790
240
18
54
125 500 163
(31) GAS FLARED CONNECTION FOR PIPING 3/4” (EXTERNAL DIAMETER 19.05 MM, THICKNESS 1 MM)
(32) GAS FLARED CONNECTION FOR PIPING 5/8” (EXTERNAL DIAMETER 15.88 MM, THICKNESS 1 MM)
(33) ELECTRICAL LINE INLET
(34) CONDENSATE DISCHARGE 12.5MM
(35) ANTI-VIBRATION SUPPORT
(36) SUPPLY AIR PROTECTION GRILLE
(37) CONNECTION FLANGE WITH AIR DUCT IN THE BASEMENT (OPTIONAL)
32
350
450
700
24
25
SIZE 31
37
26
Length mm 860
Depth mm 720
Height mm 845
Operating weight kg 58
Shipping weight kg 63
1250
37
173
DETT. A
SIZE 61
A
Length mm 1250
Depth mm 788
Height mm 1304
Operating weight kg 105
Shipping weight kg 110

GAIA 31 FUSE POSITION VOLTAGE 230/1/50
ELECTRICAL PANEL
OPTIONAL
9 - TECHNICAL INFORMATION
S-F1 24V aux. Circuit
S-F2 Circulator protection of secondary 2
S-F3 Circulator protection of secondary 3
61
300mA 5x20 T
2A 5x20 HT
2A 5x20 HT
F1 / F2 / F3 Auxiliary circuit 12V 200mA 5x20 T (F1)
FU1 Compressor line protection
FU2 230V aux. Circuit
FU3 Remote fan protection
FU4 / FU5 Heater protection
FU6 Electronic thermostatic protection
FU7 Capacity modulator protection
FU8 Primary circulator
FU9 DWH circulator
FU10 Fan for inverter compartment cooling
FU11 Secondary 1 circulator
FU12 Source side/modulating valve circulator
250mA 5x20 T (F2)
2.5A 5x20 T (F3)
16A 10.3x38 aM
6A 10.3x38 aM
4A 10.3x38 aM
20A 10.3x38 aM (FU4)
10A 10.3x38 aM (FU5)
1.25A 5x20 T
1.25A 5x20 T
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT

GAIA 61 FUSE POSITION VOLTAGE 230/1/50
ELECTRICAL PANEL
OPTIONAL
9 - TECHNICAL INFORMATION
S-F1 24V aux. Circuit
S-F2 Circulator protection of secondary 2
S-F3 Circulator protection of secondary 3
FU1 Compressor line protection
FU2 230V aux. Circuit
FU3 Remote fan protection
FU4 Compressor line protection
FU5 Heater protection
62
300mA 5x20 T
2A 5x20 HT
2A 5x20 HT
F1 / F2 / F3 Auxiliary circuit 12V 200mA 5x20 T (F1)
FU6 Electronic thermostatic protection
FU7 Capacity modulator protection
FU8 Primary circulator
FU9 DWH circulator
FU10 Fan for inverter compartment cooling
FU11 Secondary 1 circulator
FU12 Source side/modulating valve circulator
250mA 5x20 T (F2)
2.5A 5x20 T (F3)
50A 14x51 aM
6A 10.3x38 aM
4A 10.3x38 aM
32A 14x51 aM
10A 10.3x38 aM
1.25A 5x20 T
1.25A 5x20 T
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT

GAIA 61 FUSE POSITION VOLTAGE 400/3/50
ELECTRICAL PANEL
OPTIONAL
9 - TECHNICAL INFORMATION
S-F1 24V aux. Circuit
S-F2 Circulator protection of secondary 2
S-F3 Circulator protection of secondary 3
FU1 Compressor line protection
FU2 230V aux. Circuit
FU3 Remote fan protection
FU6 Electronic thermostatic protection
FU7 Capacity modulator protection
FU8 Primary circulator
FU9 DWH circulator
FU10 Fan for inverter compartment cooling
FU11 Secondary 1 circulator
FU12 Source side/modulating valve circulator
FU4 Heater protection
63
300mA 5x20 T
2A 5x20 HT
2A 5x20 HT
F1 / F2 / F3 Auxiliary circuit 12V 200mA 5x20 T (F1)
250mA 5x20 T (F2)
2.5A 5x20 T (F3)
16A 10.3x38 aM
6A 10.3x38 aM
2A 10.3x38 aM
1.25A 5x20 T
1.25A 5x20 T
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT
2A 5x20 HT
15A 10.3x38 aM

9 - TECHNICAL INFORMATION
GENERAL TECHNICAL SPECIFICATIONS TO THE NOMINAL OPERATING CONDITIONS
SIZE 31 61
APPLICATION
Performance levels refer to the energy exchanger located 3m from the interior unit.
data referred to the following conditions:
A7 / W35 water to internal exchanger 30/35°C, outdoor air temperature: 7°C D.B./ 6°C W.B.
A7 / W45 water to internal exchanger 40/45°C, outdoor air temperature: 7°C D.B./ 6°C W.B.
A7 / W55 water to internal exchanger 45/55°C, outdoor air temperature: 7°C D.B./ 6°C W.B.
A2 / W35 water to internal exchanger 30/35°C, outdoor air temperature: 2°C D.B./ 1°C W.B.
A2 / W45 water to internal exchanger 40/45°C, outdoor air temperature: 2°C D.B./ 1°C W.B.
A2 / W55 water to internal exchanger 45/55°C, outdoor air temperature: 2°C D.B./ 1°C W.B.
A35 / W18 water to internal exchanger = 23/18°C, outdoor air temperature: 35°C
A35 / W7 water to internal exchanger = 12/7°C, outdoor air temperature: 35°C
The nominal heating and cooling capacity are referred to 75% of the max. compressor RPM.
The capacity modulation is between 30% and 100%.
The modulation from 75% to 100% occurs only under temperature of 0°C.
(2) The total input is given by the compressor input + fans power input + pump power input -
proportional part of the water pump to supply the available head to installation input + the
auxiliary circuit input
(3) COP Eurovent: ratio between heating capacity and total absorbed power. The total input is
given by the compressor input + fans power input + pump power input - proportional part of the
fan to supply the available head to installation input + the auxiliary circuit input.
(4) COP (EN 14511:2008) ratio between heating capacity and total absorbed power calculated
in compliance with the provisions of standard EN 14511:2008, where the input is given by the
compressor input + fans power input + pump power input - proportional part of the fan to
supply the available head to installation input + the capacity absorbed by the primary circulator
Radiant
panels
64
Terminal
units
Radiators
Radiant
panels
Terminal
units
Radiators
HEATING A7 / W35 A7 / W45 A7 / W55 A7 / W35 A7 / W45 A7 / W55
Nominal heating capacity 1 kW 7,28 6,79 6,37 16,3 15,2 14,5
Total power input 2 kW 1,58 1,93 2,3 3,63 4,52 5,35
COP Eurovent 3 4,60 3,51 2,77 4,49 3,36 2,72
COP (EN 14511:2008) 4 4,51 3,47 2,76 4,41 3,30 2,70
Water flow rate (Internal Exchanger) 5 l/s 0,36 0,33 0,16 0,78 0,72 0,35
STD booster available pressure 5 kPa 62 63 64 28 34 62
HEATING A2 / W35 A2 / W45 A2 / W55 A2 / W35 A2 / W45 A2 / W55
Nominal heating capacity 1 kW 6,22 5,80 5,44 12,5 11,7 11,1
Total power input 2 kW 1,59 1,94 2,31 3,32 4,14 4,90
COP (EN 14511:2008) 3,86 2,97 2,35 3,67 2,75 2,16
COOLING A35 / W18 A35 / W7 - A35 / W18 A35 / W7 -
Nominal cooling capacity 1 kW 8,16 5,83 - 17,7 13,3 -
Total power input 2 kW 2,11 1,91 - 4,93 4,61 -
EER Eurovent 6 3,86 3,05 - 3,60 2,89 -
EER (EN 14511:2008) 7 3,80 3,01 - 3,65 2,92 -
ESEER Eurovent 8 7,94 5,44 - 7,42 5,41 -
Min. installation water contents 9 l 15 40
MECHANICAL FEATURES
SIZE 31 61
COMPRESOR
Type of compressors 10 1 x ROTARY INVERTER DC 1 x SCROLL INVERTER DC
Refrigerant charge (C1) 11 Kg 4 7,5
Refrigerant circuits Nr 1 1
INTERNAL EXCHANGER
Type of internal exchanger 12 PHE PHE
No. of internal exchangers Nr 1 1
REFRIGERANT CONNECTIONS
Ext. diameter of the gas piping 13 5/8” (15.88 mm thickness 1 mm) 3/4” (19.05 mm thickness 1 mm)
Ext. diameter of the liquid piping 13 1/2” (12.70 mm thickness 1 mm) 5/8” (15.88 mm thickness 1 mm)
WATER CIRCUIT
DHW / installation safety valve setting kPa 300 / 300 300 / 300
System expansion vessel capacity l 12 12
No. of expansion vessels Nr 2 2
DHW water tank capacity l 200 200
Expansion vessel capacity for DHW installation l 8 8
ENERGY EXCHANGER FAN
Type of fans 14 RAD DC RAD DC
Standard air flow l/s 1000 1750
Max external static pressure Pa 90 90
POWER SUPPLY
Standard power supply V 230/1/50 400/3/50+N
DIMENSIONS
Length Internal Unit/ / Energy Exchanger mm 600 / 860 600 / 1250
Depth Internal Unit/ / Energy Exchanger mm 800 / 720 800 / 788
Height Internal Unit/ / Energy Exchanger mm 2030 / 845 2030 / 1304
STANDARD UNIT WEIGHTS
Shipping weights Internal Unit/ / Energy Exchanger kg 250 / 63 280 / 110
Operating weights Internal Unit/ / Energy Exchanger kg 430 / 58 460 / 105
- the capacity absorbed by the circulator to provide the residual available pressure to the
installation + the auxiliary circuit input.
(5) The values shown, are referred to performances in heating
(6) EER calculated as the ratio between cooling capacity and total absorbed power.
(7) EER calculated in compliance with the provisions of standard EN 14511:2008, where the
input is given by the compressor input + fans power input + pump power input - proportional
part of the fan to supply the available head to installation input + the capacity absorbed by the
primary circulator - the capacity absorbed by the circulator to provide the residual available
pressure to the installation + the auxiliary circuit input.
(8) ESEER calculated according to Eurovent, for water produced at 18°C have been
considered the conditions at the partial loads defined by Eurovent for water produced at 7°C
(9) The min. water contents of the installation refers to the operation with the min. operating
water circuit.
(10) Inverter compressor
(11) The refrigerant charge only refers to the intern unit..
The energy exchanger is sent as a nitrogen charge.
The refrigerant charge has to be completed when the units are installed.
(12) PHE = plates
(13) With the unit are supplied some brass unions suitable to receive the piping indicated in
the table.
(14)RAD DC = radial fan in continuous current
In the COP and EER calculation, according to the standard EN14511:2008, has been
considered the circulator on the primary circuit.

ELECTRIC DATA
9 - TECHNICAL INFORMATION
POWER SUPPLY : 230/1/50
SIZES 31
61
F.L.A. FULL LOAD CURRENT AT MAX ADMISSIBLE CONDITIONS
F.L.A. - Total
F.L.I. FULL LOAD POWER INPUT AT MAX ADMISSIBLE CONDITION
A 20,2
43,5
F.L.I. - Auxiliary circuit kW 0,10
0,1
F.L.I. - Total kW 4,40
7,0
Power supply 230/1/50
Voltage unbalance: max 2 %
The circulator is included in the total values calculation.
The units are compliant with the provisions of European standards CEI EN 60204 and CEI EN 60335.
The unit is conformed to CEI EN 61000-3-12 on condition that the short circuit power (Ssc), at the connection between the unit to the public distribution, is more or the same as the
value of 250 (Rsce) x Sequ.
The value of Sequ (for units powered by 230V/1/50) is given by: Sequ = FLA x 230 (VA)
It is fitter’s or user’s responsibility to make sure that, if necessary consulting the supplying electrical en electrical energy company, the minimum short circuit power is more or the
same as the value of 250 x Sequ."
The capacity absorbed by the circulator, necessary for the energy certification of the building as datum to attribute to the aux. absorptions, must be determinate in function of the
real system pressure drops.
The Gaia circulator, being an inverter system in continuous current, is set, during the starting unit configuration, to have an absorption proportional to the real system pressure
drops.
Power supply 400/3/50 (+ NEUTRO) +/- 6%
Voltage unbalance: max 2 %
POWER SUPPLY : 400/3/50
SIZE 61
F.L.A. FULL LOAD CURRENT AT MAX ADMISSIBLE CONDITIONS
F.L.A. - Total A 14,5
F.L.I. FULL LOAD POWER INPUT AT MAX ADMISSIBLE CONDITION
F.L.I. - Auxiliary circuit kW 0,1
F.L.I. - Total kW 7,0
The circulator is included in the total values calculation
The units are compliant with the provisions of European standards CEI EN 60204 and CEI EN 60335.
The unit is conformed to CEI EN 61000-3-12 on condition that the short circuit power (Ssc), at the connection between the unit to the public distribution, is more or the same as the
value of 250 (Rsce) x Sequ.
The value of Sequ (for units powered by 400V/3/50) is given by: Sequ = FLA x 400 x 1.73 (VA)
It is fitter’s or user’s responsibility to make sure that, if necessary consulting the supplying electrical en electrical energy company, the minimum short circuit power is more or the
same as the value of 250 x Sequ
The capacity absorbed by the circulator, necessary for the energy certification of the building as datum to attribute to the aux. absorptions, must be determinate in function of the
real system pressure drops.
The Gaia circulator, being an inverter system in continuous current, is set, during the starting unit configuration, to have an absorption proportional to the real system pressure
drops.
The tables refer to the standard units, they therefore don’t include the absorbed capacity of 4 kW or 6 kW of the modulating
electric heater accessory (0 - 4 kW for size 31 and 0 - 6 kW for size 61).
SOUND LEVELS
SIZE MODULE
Noise levels are determined using the tensiometric method (UNI EN ISO 9614-2)
Unit at full load : internal exchanger water 23/18 °C
Ambient temperature = 35 °C
Sound levels refer to units with full load under nominal test conditions.
Sound Power Level (dB)
Octave band (Hz)
The sound pressure is measured at 1 m from the external surface of the unit in open field conditions.
The external unit sound levels refer to the Energy exchanger duce at the nominal flow with available pressure of 90 Pa.
65
Sound
pressure
level
(1m)
Sound
power
level
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
31
INTERNAL UNIT
ENERGY EXCHANGER
53
69
74
72
58
71
48
66
38
63
35
62
28
54
35
48
40
54
56
69
61
INTERNAL UNIT
ENERGY EXCHANGER
63
66
67
69
57
71
56
64
50
61
42
56
37
48
36
45
41
52
57
67

OPERATING LIMITS
COOLING
HEATING
Twu [°C]
Twu [°C]
20
15
10
5
0
DOMESTIC HOT WATER PRODUCTION
TACS [°C]
9 - TECHNICAL INFORMATION
GAIA Aria 31 GAIA Aria 61
2
0 5 10 15 20 25 30 35 40 45 50 55 60
Tae [°C]
Twu [°C] = exchanger water outlet temperature
Twu [°C] = 3°c antifreeze safety intervention
Tae [°C] = exchanger input air temperature
65
60
55
50
45
40
35
30
25
20
3
1
3
66
Twu (°C)
20
15
10
5
0
2
0 5 10 15 20 25 30 35 40 45 50 55 60
Tae (°C)
GAIA Aria 31 GAIA Aria 61
-25 -20 -15 -10 -5 0
Tae [°C]
5 10 15 20 25
Twu [°C] = exchanger water outlet temperature
Tae [°C] = exchanger input air temperature
(1) Normal operation range
60
55
50
45
40
35
30
25
20
5
1 2
3 1
2
-25 -20 -15 -10 -5 0 5 10
Tae [°C]
15 20 25 30 35 40 45
TACS [°C] = DHW temperature
Tae [°C] = exchanger input air temperature
(1) Normal operation range
(2) Operation with fans in modulation
Twu (°C)
65
60
55
50
45
40
35
30
25
20
4
-25 -20 -15 -10 -5 0
Tae (°C)
5 10 15 20 25
(2) Operation with fans in modulation
(3) Operation with fans at 100%
(4) Operation range for brief and transitory periods (Max. 5000 hours)
TACS (°C)
(1) Normal operation range
(2) Operation with fans in modulation
(3) Operation with fans at 100%
GAIA Aria 31 GAIA Aria 61
60
55
50
45
40
35
30
25
20
4
1
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45
1
Tae (°C)
(3) Operation with fans at 100%
(4) Operation range for brief and transitory periods (Max. 5000 hours)
(5) Operation range with the aid of the electric heater in the domestic hot watr
storage tank.
1
2
3
2

Dp (kPa)
9 - TECHNICAL INFORMATION
AVAILABLE PRESSURE AND BOOSTER CIRCULATOR ABSORPTION
A graph is shown below relative to the available pressure and absorption for each circulator in the unit.
The capacity delivered by the unit is distributed to each booster. As a result, if Gaia is installed with multiple boosters,
the total flow rate must comply with the unit's total capacity .
STANDARD BOOSTER AVAILABLE PRESSURE
AND HIGH TEMPERATURE BOOSTERS
70
60
50
40
30
20
10
0
Max
85%
75%
65%
55%
45%
35%
25%
Min
Min
DP [KPA] = AVAILABLE PRESSURE
PAC [W] = ABSORBED CAPACITY OF THE INSTALLATION CIRCULATOR
Q [L/S] = WATER FLOW-RATE
25%
0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0
Q (l/s)
35%
67
USEFUL BOOSTED HEAD - UNMIXED
THE STATIC PRESSURES ARE INTENDED AS THOSE AVAILABLE AT THE UNIT'S CONNECTIONS.
THANKS TO THE ADJUSTMENT BY GAIA, EACH PUMP AUTOMATICALLY ADAPTS THE WATER FLOW RATE BASED ON THE SYSTEM LOAD. IT IS POSSIBLE IN ANY
CASE TO SET THE MAXIMUM HEAD NECESSARY FOR EACH BOOSTER WITH A SPECIFIC PARAMETER THAT ADJUSTS THE 0-10V INPUT SIGNAL.
THE TABLE BELOW SHOWS THE CORRESPONDENCE BETWEEN THE OPERATING PERCENTAGE OF THE CIRCULATORS AND THE INPUT CONTROL SIGNAL
SIGNAL (V) AND PERCENTAGE CORRESPONDENZA TABLE
45%
Max
55%
85%
Segnal 1.5 V 2.5 V 3.5 V 4.5 V 5.5 V 6.5 V 7.5 V 8.5 V 10 V
Percentage Min 25% 35% 45% 55% 65% 75% 85% Max
75%
65%
80
70
60
50
40
30
20
10
0
Pa c (W)
Dp (kPa)
70
60
50
40
30
20
10
0
Max
85%
75%
65%
55%
45%
35%
25%
Q (l/s)
0,0 0,1 0,2 0,3
Q (l/s)
0,4 0,5 0,6
25%
35%
Max
85%
45%
75%
65%
55%
80
70
60
50
40
30
20
10
0
Pa c (W)

USER
It is forbidden the use of the device to children and
unassisted disables .
It is forbidden to touch the device if you are barefoot and with
wet body parts .
It is forbidden any cleaning, before having disconnected the
device positioning the system main switch on “off”.
It is forbidden to pull, remove, twist the electric cables that
come out from the device even if it is disconnected from the
mains supply.
It is forbidden to trample on the device and/or to put on it any
type of object.
It is forbidden to throw or spray water directly on the device.
It is forbidden to insert sharpened objects by the air return
and supply grilles.
It is vorbidden to open the lids of access to the internal
device parts, without having before positioned the main
switch of the system on “off”.
Keep this manual with the wiring diagram in an accessible
place for the operator.
Note the unit lable data so you can provide them at the
assistance centre in case of intervention (see "Unit
identification" section)
Provide a unit notebook that allows any interventions carried
out on the unit to be noted and tracked making it easier to
suitably note the various interventions and aids the search
for any breakdowns.
In case of breakdown or malfunction:
- immediately deactivate the unit
- Contact a constructor certified assistance service.
- Use original spares parts only
Ask the installer to be trained on:
- start-up / shutdown
- set points change
- standby mode
- maintenance
- what to do / what not to do in case of breakdown
GENERAL INSTRUCTIONS
Preliminaries
The positioning, hydraulic system, refrigerating, electrics and
the air duct must be determined by the system designer or by
experts and must take into consideration both the decidedly
technical requirements as well as any local regulations in act
regarding specific authorisations.
10 - GENERAL INSTRUCTIONS
68
Only qualified personnel can operate on the unit, as required
by the regulation in force.
Using the unit in case of breakdown or malfunction :
HYDRAULIC SYSTEM
Components
voids the warranty
may compromise the safety of the unit
may increase time and repair costs.
Follow local safety regulations.
Keep packing material out of children’s reach it may be
dangerous.
Recycle and dispose of packing material in conformity with
local regulations.
Risk situations
The unit has been designed and created to prevent injures to
people.
During designing it is not possible to plane and operate on all
risk situation.
Read carefully "Residual risk" section where all situation
which may cause damages to things and injuries to people
are reported.
Installation, starting, maintenance and repair required specific
knowledge; if they are carried out by inexperienced personnel,
they may cause damages to things and injuries people.
Intended use
Use the unit for cooling/heating water or a water and glycol
mix for air-conditioning only, within limits defined in the
technical bulletin and on this manual.
Any use other than intended does not involve the
manufacturer in any commitment or obligation.
Selection and installation of system components must be
carry out by installer.
Cut-off valves installed at inlet and outlet (both on the water
technique circuit as well as that of the hot domestic water)
allow maintenance operations without having to empty the
system .
Thermometers and manometers installed at entry and exit of
the main elements facilitate inspection and maintenance.
An air bleed valve is installed in all of the highest points of the
system allowing the venting of the circuits air.
Drainage taps are installed in the lowest points of the system
to allow bleeding.
An expansion tank allows the correct system pressure to be
maintained when the water temperature varies. It must be
dimensioned as a function of water content. Under particular
circumstances it could be necessary install an additional one
or two tanks even if the unit is already supplied with a tank.
A water flow switch is obligatory if it is not present in the unit .
Filter is supplied with the unit; it must be installed on the
return ducting of the system close to the unit
The filter should never be re-moved, this operation
invalidates the warranty .
The hydraulic pipes weight mustn’t burden on the unit
connections .

Operation sequence
Before connecting the unit, carefully wash the system by filling it
and emptying it several times with clean water.
10 - GENERAL INSTRUCTIONS
Ignoring this operation will lead to several filter cleaning interventions
and at worst cases can cause damages to the exchangers
and the other parts.
Execute leakage test before isolate the pipes.
To avoid heat dispersions and formation of condensate isolate
all the pipes.
Leave various point of service free (wells, vent-holes etc )
Water quality
The water quality is determined by the following factors, avoid
therefore:
- Inorganic salts
- pH
- Biological load (seaweeds etc)
- Suspended solids
- Dissolved oxygen
Water with inadequate characteristics can cause:
- pressure drop increase
- energy efficiency decrease
- corrosive symptom increase
Risk of freeze
If the unit or the relative water connections can be subject to
temperatures close to 0°C adopt measures for prevent risk of
freeze.
For example:
- Mix water with ethylene glycol
- Safeguard the pipes with heating cables placed under
the insulation
- Empty the system in cases of long non-use and check
that: :
- there are no closed taps present that could trap water
even after emptying
- there are no low points in which water can stagnate
even after emptying; carry out any blowing required
Anti-freeze solution
Consider that the use of anti-freeze solution determines an increase
in a pressure drop.
Make sure that the glycol type utilized is inhibited (not corrosive)
and compatible with the hydraulic circuit components (pump
etc).
ELETTRIC SYSTEM
General
The characteristics of the electrical lines must be determined by
specialized personnel able to design electrical installations;
moreover, the lines must be in conformity with regulations in
force.
Please refer to the "Information" section for the detailed
characteristics of the unit (dimensioning, performance, etc) .
Operate in compliance with safety regulations in force .
Use single protection devices : gloves, glasses ecc.
The protection devices of the unit power line must be able to
stop the presumed short circuit current, whose value must be
determined in function of system features.
69
The power cables and the protection cable section must be
defined in accordance with the characteristics of the
protections adopted.
The serial number label reports the unit specific electrical
data, included any electrical accessories.
The electrical data indicated in the technical bulletin and in the
manual refer to the standard unit, accessories excluded.
Refer to those data.
Connection
All electrical operations should be performed by trained
personnel having the necessary requirements by the
regulations in force and being informed about the risks
relevant to these activities.
Refer to the unit electrical diagram (the number of the diagram
is shown on the serial number label).
Verify that the network has characteristics conforming to the
data shown on the serial number label .
Make sure that the unit supply line is selected at start.
Shelter the cables using adequate measure fairleads.
Before starting work, verify that the sectioning device at the
start of the unit power line is open, blocked and equipped with
sign warning.
First create the earthing connection.
Prior to powering the unit ensure that all the protections that
were removed during the electrical connection work have
been restored.
Signal lines/data-lay
Do not overpass the maximum power allowed, which varies,
according to the type of signal.
Lay the cables far from power cables or cables having a
different voltage and that are able to emit electromagnetic
disturbances.
Do not lay the cable near devices which can generate
electromagnetic interferences.
Do not lay the cables parallel to other cables; cable crossings
are possible, only if laid at 90°.
Connect the screen to the ground, only if there aren’t
disturbances .
Guarantee the continuity of the screen for the entire extension
of the cable.
Respect impendency, capacity and attenuation indications.
REFRIGERANT LINES
GAIA is designed to ensure the best comfort and energy
efficiency levels. To maintain these high values is necessary to
consider the system details that could adversely affect on
GAIA performances.
In particular:
- the length of the refrigerant piping should be as small
as possible ;
- to realize a path of the pipes as straight as possible by
limiting the presence of curves;
- properly insulate pipes;
properly load the refrigerant system.

An incorrect sizing can cause damage to the compressor or
variations in the cooling capacity .
When cut-off parts (solenoid valves, taps etc) are installed
pay attention to the possible formation of traps for the
refrigerant, meaning closed zones up or downstream in which
the refrigerant is unable to expand freely.
With an increase in temperature under these circumstances
(exposure to the sun, ducting close to heat sources etcs) the
expansion of the trapped gas could cause an explosion in the
refrigerating ducting. Evaluate the possibility of installing a
safety valve especiallly in the ducting of the liquid which is
exposed to the most risk.
The operations must be carried out by an expert
refrigerationist .
Avoid curves with a too small curving radius.
Avoid squashing the pipes.
Provide anchoring rods to support the ducting (the weight
must not be on the unit).
The rods must allow the thermal dilation of the ducting.
Place anti-vibrating material between the rods and the ducting
to avoid the transmission of vibrations.
Clean with nitrogen or dry air before attaching the ducting to
the two units.
The internal unit and the heat exchanger must be connected
with refrigerating ducting suitable for the refrigerant used and
covered with thermal insulation.
MODIFICATION
All unit modifications will end the warranty coverage and the
manufacturer responsibility.
BREAKDOWN/MALFUNCTION
Disable the unit immediately in case of breakdown or
malfunction.
Contact a constructor certified assistance service.
Use original spares parts only.
USER TRAINING
The installer has to train the user on :
Continual product improvements may imply manual data
changes
Visit manufacturer web site for updated data.
.
- set points change;
- standby mode;
- Maintenance;
- what to do / what not to do in case of breakdown.
DATA UPDATE
10 - GENERAL INSTRUCTIONS
70

RESIDUAL RISKS
General
In this section the most common situations are signalled. As
these cannot be controlled by the manufacturer these could
be a source of risk situations for people or things.
Danger zone
This is an area in which only an authorised operator may
work.
The danger zone is the area inside the unit which is
accessible only with the deliberate removal of protections or
parts thereof.
Handling
The handling operations, if implemented without all of the
protection necesssary and without due caution, may cause
the fall or the tipping of the unit with the consequent damage,
even serious, to persons, things or the unit itself.
Handle the unit following the instructions provided in the
present manual regarding the packaging and in compliance
with the local regulations in force.
Should the gas refrigerant leak please refer to the refrigerant
"Safety sheet".
Installation
An incorrect installation of the unit could cause water leaks,
condensate accumulation, leaking of the refrigerant, electric
shock, bad functioning or damage to the unit itself.
Check that the installation has been implemented by qualified
technical personnel only and that the instructions contained
in the present manual and the local regulations in force have
been adhered to.
The installation of the unit in a place where even infrequent
leaks of inflammable gas and the accumulation of this gas in
the area surrounding the area occur could cause explosions
or fires.
Carefully check the positioning of the unit.
The installation of the unit in a place unsuited to support its
weight and/or guarantee adequate anchorage may cause the
fall or the tipping of the unit with the consequent damage to
things, people or the unit itself.
Carefully check the positioning and the anchoring of the unit.
Easy access to the unit by children, unauthorised persons or
animals may be the source of accidents, some serious.
Install the unit in areas which are only accessible to
authorised person and/or provide protection against intrusion
into the danger zone .
General risks
Smell of burning, smoke or other signals of serious
anomalies may indicate a situation which could cause
damage to people, things or the unit itself.
Electrically isolate the unit (yellow-red isolator).
Contact the authorised service centre to identify and resolve
the problem at the source of the anomaly.
Accidental contact with exchange batteries, compressors, air
delivery pipes or other components may cause injuries and/or
11 - RESIDUAL RISKS
71
burns.
Always wear suitable clothing including protective gloves to
work inside the danger zone.
Maintenance and repair operations carried out by non-qualified
personnel may cause damage to persons, things or the unit
itself.
Always contact the qualified assistance centre.
Failing to close the unit panels or failure to check the correct
tightening of all of the panelling fixing screws may cause
damage to persons, things or the unit itself.
Periodically check that all of the panels are correctly closed
and fixed.
If there is a fire the temperature of the refrigerant could reach
values that increase the pressure to beyond the safety valve
with the consequent possible projection of the refrigerant itself
or explosion of the circuit parts that remain isolated by the
closure of the tap.
Do not remain in the proximity of the safety valve and never
leave the refrigerating system taps closed.
Electric parts
An incomplete attachment line to the electric network or with
incorrectly sized cables and/or unsuitable protective devices
can cause electric shocks, intoxication, damage to the unit or
fires.
Carry out all of the work on the electric system referring to the
electric layout and the present manual ensuring the use of a
system thereto dedicated.
An incorrect fixing of the electric components cover may favour
the entry of dust, water etc inside and may consequently can
electric shocks, damage to the unit or fires.
Always fix the unit cover properly.
When the metallic mass of the unit is under voltage and is not
correctly connected to the earthing system it may be as source
of electric shock and electrocution.
Always pay particular attention to the implementation of the
earthing system connections.
Contact with parts under voltage accessible inside the unit
after the removal of the guards can cause electric shocks,
burns and electrocution.
Open and padlock the general isolator prior to removing the
guards and signal work in progress with the appropriate shield.
Contact with parts that could be under voltage due to the start
up of the unit may cause electric shocks, burns and
electrocution.
When voltage is necessary for the circuit open the isolator on
the attachment line of the unit itself, padlock it and display the
appropriate warning shield.
Moving parts
Contact with the transmissions or with the fan aspiration can
cause injuries.
Prior to entering the inside of the unit open the isolater situated
on the connection line of the unit itself, padlock and display the
suitable sign.
Contact with the fans can cause incurie.

Prior to removing the protective grill or the fans, open the
isolator on the attachment line of the unit itself, padlock it and
display the appropriate warning sign.
Refrigerant
The intervention of the safety valve and the consequent
expulsion of the gas refrigerant may cause injuries and
intoxication. Always wear suitable clothing including protective
gloves and eyeglasses for operations inside the danger zone.
Should the gas refrigerant leak please refer to the refrigerant
"Safety sheet".
Contact between open flames or heat sources with the
refrigerant or the heating of the gas circuit under pressure (e.g.
during welding operations) may cause explosions or fires.
Do not place any heat source inside the danger zone.
DISPOSAL
Disconnection
Only authorised personnel must disconnect the unit.
Avoid leak or spills into the environment.
Before disconnecting the unit, the following must be
recovered, if present:
- refrigerant gas
- Anti-freeze solutions in the hydraulic circuits
When awaiting dismantling and disposal, the unit can also be
stored outdoors, as bad weather and rapid changes in
temperature will not cause damage to the environment, if the
unit's electric, cooling and hydraulic circuits are integral and
closed.
2002/96/CE DIRECTIVE rev.1 of 29/01/07
The units covered by the legislation in question are marked
with the symbol on the side.
With the aim of protecting the environment, all of our units are
produced in compliance with Directive 2002/96/EC on waste
electrical and electronic equipment (WEEE).
The potential effects on the environment and on human health
due to the presence of hazardous substances are shown in
the use and maintenance manual in the section on residual
risks.
Information in addition to that indicated below, if required, can
be obtained from the manufacturer/distributor/importer, who
are responsible for the collection/handling of waste originating
from equipment covered by 2002/96/EC. This information is
also available from the retailer who sold this appliance or from
the local authorities who handle waste.
Directive 2002/96/EC requires disposal and recycling of
electrical and electronic equipment as described therein to be
handled through appropriate collection, in suitable centres,
separate from collection for the disposal of mixed urban
waste.
The user must not dispose of the unit at the end of its life
cycle as urban waste. It must instead be handed over to
11 - RESIDUAL RISKS
72
The maintenance or repair interventions which include welding
must be carried out with the system off.
Hydraulic parts
Defects in ducting , the attachments or the cut-off parts may
cause a leak or water projection with the consequent
damages to people, things or shortcircuit the unit.
appropriate collection centres as set forth by current standards
or as instructed by the distributor.
If disposal takes places at the same time as delivery of a new
electrical or electronic equipment for the same family, the
product may be collected directly by the distributor.
Dismantling disposal
THE UNIT MUST ALWAYS BE SENT TO AUTHORISED
CENTRES FOR DISMANTLING AND DISPOSAL.
When dismantling the unit, the fan, the motor and the coil, if
operating, may be recovered by the specialist centres for
reuse.
All the materials must be recovered or disposed of in
compliance with the corresponding national standards in force.
For further information on the decommissioning of the unit,
contact the manufacturer.

NOTES
73

1
2
3
4
5
6
7
8
9
10
11
INDEX
Reception 7
Installation 8
Water connections 13
Refrigerating connections 17
Electrical connections 21
Start - up 27
Control 38
Maintenance 53
Technical data 59
General instructions 68
Residual risks 71
75

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