BIG-WET-RTF

Climaveneta Technical Bulletin 

BIG_WET_RTF_0704_1204_200910_GB 

BIG-WET-RTF 

0704 - 1204 

243 - 396 kW 

 

 

 

 

Refrigerant gas R410A 

Comfort 

Safe use 

Flexibility 

r HFC 

R-410A 

Autonomous packaged rooftop unit, water/air reversible, 

for water loop system 

(The photo of the unit is indicative and may change depending on the model)

INDEX 

Composition and features of the standard unit 

Standard confi guration 

Accessories 

Mixing box operating modes 

Hydraulic circuit 

General technical data 

Lenghts and weights of standard unit 

Outlet fan motor characteristics 

Electrical data 

Operating limits 

Pressure drops 

Hydarulic conenction diagrams 

Liability disclaimer 

This bulletin is not exhaustive about: installation, use, safety 

precautions, handling and transport. Refer to “General Manual 

for Installation” for further informations. This bulletin refers to 

standard executions, in particular for dimension, weight, electric, 

hydraulic, aeraulic and refrigerant connections (whereas 

applicable). Contact Climaveneta Commercial Offi ce for further 

drawings and schemes. Climaveneta declines any liability derived 

from the bulletin’s use. This bulletin is of exclusive property 


2 


0704 - 1204 

pg. n° 3 

pg. n° 5 

pg. n° 7 

pg. n° 9 

pg. n° 11 

pg. n° 13 

pg. n° 15 

pg. n° 16 

pg. n° 17 

pg. n° 18 

pg. n° 19 

pg. n° 20 

Company quality system 

certifi ed to UNI EN ISO 9001 

of Climaveneta, and all forms of copy are prohibited. The data 

contained herein are subject to variation without notice. 


HFC R410A

The BIG-WET-RTF Roof-Top versions of the WET (Water 

energy transfer) range of chillers by CLIMAVENETA are built to 

high quality standards and designed to offer extremely reliable 

operation. They are ideal for conditioning air in large areas. Built 

for applications using water loop systems, they are specifi c 

for supermarkets, shopping malls, cinemas, offi ce buildings, 

workshops, canteens and restaurants, hospitals and surgeries, 

and facilities for processing and preserving foodstuffs such 

as meat, cheeses and vegetables. These compact and sturdy 

units are only available in the Heat Pump version and are fl exible 

enough to satisfy air-conditioning requirements throughout 

the year by providing simultaneous cooling and heating in the 

same system. Similarly to all the units in the WET series, Climaveneta 

recommends the use of its WETFWS supervision 

system in order to ensure rational, trouble-free management of 

the entire system. 

The units contain R410A ecological refrigerant. 

COMPOSITION AND FEATURES OF THE STANDARD UNIT 

STRUCTURE 

The structure comprises a base made from hot-galvanised, 

epoxy powder-painted sheet steel profi les. The frame and outer 

panelling are made from aluminium alloy which offers total 

protection from atmospheric agents. The panelling is easy to 

remove and allows free access to internal components. The 

area in contact with the treated air is made from double-wall 

(42 mm) sandwich panelling in galvanised sheet metal for the 

delivery fans and expansion coil and in galvanised sheet metal 

(internal) and aluminium (external) for the other components, 

separated by an insulation layer of hot-injected polyurethane 

with an average density of 45 Kg/m3. 

COMPRESSORS 

The hermetic Scroll compressors are fi tted with an oil sump heater, 

a two-pole direct starting motor, and internal overheating 

protection. Their special construction technology, together with 

the small number of moving parts and the absence of pistons 

and inlet/outlet valves, makes them silent-running and vibration-free. 

They withstand the stress produced by back-fl owing 

remarkably well, thus reducing the probability of mechanical 

breakage and increasing reliability and lifetime. It is now known 

and proved that this type of compressor has considerable advantages 

and obtains excellent system performance with inevitable 

repercussions on running costs. 

COMPRESSOR CHAMBER 

The compressor chamber is independent, spacious and totally 

accessible in order to allow perfect rationalisation of the piping 

and offer correct access to all the cooling circuit components. 

It is positioned very close to the electrical panel in order to 

simplify work for operators during the checking and monitoring 

phases as they can keep the electrical panel, the control unit 

display and the compressors under control at the same time. 

This solution also reduces ambient noise. 

AIR-CONDITIONING COIL 

The refrigerant-air block exchanger coils, two for each unit with 

vertex angle of 90°, are made from copper tubes and aluminium 

fi ns. Even under maximum load conditions, air speed is 

kept below 2.7 m/s in order to prevent condensation from being 

ntrained, even under the most unfavourable heat and humidity 

conditions. 

DRIP TRAY 

A plastic tray with an inclined bottom and complete with a drain 

connector is provided to collect condensate. 

FILTERING SECTION 

The quality of the conditioned air (IAQ) is guaranteed by excellent 

fi ltration and the perfectly cleanable metal surfaces which 

the air comes into contact with throughout its journey through 


3 

the unit, as recommended by Law Decree 626/94, for reducing 

the pollution risk factor. The standard fi lter cells are made of 

synthetic resin-coated polyester fi bre of gauged densit with G3 

effi ciency. The fi lter cells are easy to access and glide on steel 

shutter for periodic washing with water and detergent. 

WATER-REFRIGERANT HEAT EXCHANGER 

AISI 316L steel braze-welded plate exchanger. The heat exchangers 

are insulated with a closed-cell condensationproof 

neoprene lining. When the unit is not working, it is protected 

from the formation of ice by an anti-freeze thermostat which 

activates an electric heater when the temperature of the water 

falls too low; When the unit is working, it is protected by a differential 

pressure switch mounted on the water side and by a 

thermostat. The exchangers can be used with water from wells, 

from towers or with dry-coolers. On the inlet and the outlet, 

they are connected with a manifold in order to simplify installation 

and are always fi tted with manual on/off taps to allow 

maintenance of individual exchangers. 

VENTILATING SECTION 

Centrifuge outlet and inlet (optional) fans featuring statically 

and dynamically balanced, twin inlet centrifuge fans with forward-inclined 

vanes, mounted on rubber vibration dampers. 

Three-phase UNEL MEC electric motors, protected to IP55, 

mounted on a belt-tightening system with adjustable pulley on 

motor. All units can be supplied with discharge up, down or at 

sides. 

COOLING CIRCUITS 

Cooling circuit comprising the following components: 

- Dryer fi lter. 

- Refrigerant sight glass. 

- Filling valves and pressure switches. 

- Thermostatic expansion valve with external equalisation. 

- Four-way cycle reversal valve. 

- Charge with eco-friendly R410A refrigerant. 

ELECTRICAL PANEL 

Electrical power and control panel, built to EN 60204-1/EC 

204-1 standards, cage clamps are used to ensure they remain 

tight, thus ensuring excellent long-term contact and offering 

faster maintenance times. The electrical power and control 

panel is located over the compressor chamber. This eye level 

position makes inspection easy even in diffi cult or uncomfortable 

applications and provides excellent insulation against dirt 

or damp. The use of components by leading manufacturers 

makes it easy to procure spare parts, offers safe and rapid 

maintenance, and minimises shut-down times. 

Electrical panel complete with: 

- Control circuit transformer 

- General door lock isolator 

- Power circuit with bar distribution system 

- Fuses and contactors for compressors and fans 

- Cage clamp control circuit terminals 

- Electric panel with double door and seals for outdoor installation 

- Microprocessor-controlled electronic controller. 


HFC R410A

AIR3000 CONTROL UNIT 

The dedicated control unit (for supervision system) offers correct 

parameter settings and intelligent unit management, thus 

allowing its functions to be adapted to the various system and 

user requirements. 

MECHANICAL FILTER WITH STEEL MESH 

Filter for blocking and collecting the impurities in the hydraulic 

circuit; positioned on the plate exchanger inlet. 

MANUAL ON/OFF VALVES 

Manual on/off valves positioned on the plate exchanger inlet 

and outlet for isolating the unit during maintenance work. 

MOTORIZED ON/OFF VALVE 

Motorized two-way valve mounted on the plate exchanger outlet, 

for units for the variable-fl ow closed loop circuit only, linked 

to the compressors; when the compressor is off the valve is Off, 

and vice-versa. 

TWO-WAY MODULATING PRESSURE VALVE 

Two-way powered modulating pressure solenoid valve, for units 

in confi guration with open water circuits only; adjust the fl ow of 

water according to the rate of condensation in the unit, thus 

ensuring perfect operation. 

RAINPROOF HOOD 

For the versions with mixing box (MIX, FCS, FCC), the external 

and exhaust air gate valves are fi tted with a rainproof hood 

which prevents water from being drawn into the box. 

REAR AIR IN INTAKE ONLY 

Air intake available from rear only. 

EASE OF MAINTENANCE 

Large access panels to the compressor chamber and the elec- 


4 

trical panel make maintenance particularly easy. The special 

construction solutions allow the components subject to periodic 

cleaning to be removed very easily and offer access to the internal 

sections. 

DESIGN AND STRUCTURAL COMPACTNESS 

The lightweight though sturdy frame and panelling are made 

from weatherproof materials which, together with its appealing 

design and minimum environmental impact, make the unit perfectly 

suitable for any installation location. 

EASE OF INSTALLATION 

After positioning the unit, it is now ready to be connected to the 

ducts. The electrical connections can be completed during this 

operation in order to allow fi tters to rapidly perform the ventilation 

test and calibrate the air distribution circuit. 

OPERATING SAFETY 

The fact that all the connections have been made and tested 

in the factory leads to higher reliability and a higher probability 

that the system is perfectly operational both as regards the system 

and air distribution circuits. Operating safety also means 

lower overall installation costs. 

ACCESSORIES 

A set of accessories make it even easier to adapt the unit to a 

wide range of system requirements. 


HFC R410A

STANDARD CONFIGURATION 

STD: Recirculation only 

Standard total recirculation confi guration; used to treat external 

recirculation air (AR) only. Flow is provided by the rooftop 

discharge fan. Stale air must be expelled from the room and 

fresh air introduced through roof fans or other means that are 

independent of the Roof-Top. 

AVAILABLE CONFIGURATIONS (OPTIONAL) 

MIX: Mixing box 

A.R. = Internal Air Recirculation 

A.E. = External Air Intake 

MIX = Mixed Air 

With 1 manually operated valve. Used to mix the recirculation 

air (AR) taken from the conditioned room with a quantity of 

external air (AE) variable with different thermoigrometric conditions, 

but advisable for 30% of supply air fl ow. Supply air fl ow is 

provided by the rooftop discharge fan. Any air must be expelled 


5 

from the room through roof fans or other means that are independent 

of the rooftop.The MIX version may be fi tted with a 

Recirculation Air Valve (SRIC). The gate valve is not controlled 

by the AIR 3000 control unit. 


HFC R410A

FCS: Standard Free-Cooling 

With 2 motorised valves managed by the AIR 3000 unit controller. 

This version is also called an Economiser as it is the 

simplest and most economic Free-Cooling unit. Its operating 

principle is very similar to the MIX version with the recirculation 

air valve SRIC. In this case the external air valve AE is sized to 

about 100% of rated fl ow, thereby allowing Free-Cooling to use 

100% external air. The valves are opposed and motorised. The 

on-board controller manage the valves according to the tem- 

FCC: Free-Cooling with centrifuge fans 

ESP = Expelled air 

A.R. = Internal Air Recirculation 

A.R. 

A.R. 

A.R. 

A.R. 

max 100% ESP. 

With 3 motorised valves managed by the AIR 3000 unit controller. 

This is the Free-Cooling version. The main fan of the 

rooftop unit ensures the rated air fl ow reaches the system. 

The centrifuge fan introduces ambient air into the recirculation 

cycle. It is therefore unnecessary to extract the air from the 

room with any other means as it should be slightly overpressured 

in order to reduce the amount of external air entering. The 

three dampers are controlled by on board controller, that pro- 


FCS 

A.E. 

A.E. 

6 

MIX 

max 100% 

max 100% 

AIR300 

RoofTop 

perature of the external air so as to optimise the Free-Cooling 

function. The air should be extracted from the room, if necessary, 

with roof fans or other means (by overpressure through 

doors or windows). 

FCC 

A.E. 

A.E. 

MIX 

A.E. = External Air Intake 

MIX = Mixed Air 

AIR300 

RoofTop 

portionally modulate the dampers opening to generate a mix 

between fresch and recirculation air, energetically more good. 

During this working mode the 100 % Free-cooling mode can 

begin when all the resourses are disconnect. 


HFC R410A

ACCESSORIES 

Post-heating 

For the elevated latent load in the air, it is possible an enthalpic 

control in order to bring the level of humidity to comfortable values. 

This treatment comprises dehumidifi cation to correct the 

humidity value and subsequent post-heating to correct the temperature 

value. These two measurements are therefore controlled 

separately. The cooling required for dehumidifi cation is 

provided by a normal direct expansion cooling coil, while a second 

power source is required for post-heating. This resource 

is available in the following form: 

Hot gas post-heating. 

This uses the same cooling circuit of the unit, sending part of 

the hot gas from the delivery section to a fi nned coil immersed 

in the fl ow of treated air downstream of the direct expansion 

coil. It therefore requires no additional power source 

Heating coil 

Optional coil, fi tted downstream from the treatment coil, that 

can be powered with hot water or electricity. This solution is 

designed to integrate the treatment coil for very lower external 

air temperatures or to replace it if the external air temperature 

allows. 

Three-way hot water valve 

This is a modulating mixing valve installed on the hot water 

heating coil outlet. It is piloted by a variable signal depending 

on the ambient temperature and regulates the fl ow of water according 

to the heat load. It is supplied mounted and complete 

with a modulating drive. 

Air pre-heating coil 

In the event of low temperatures, this coil pre-heats the incoming 

external air using the hot water from the loop or another 

heat source. 

Oversize motor 

For ducts with elevated pressure drops, the useful static pressure 

at the centrifuge fan inlets must be increased. This will 

consequently increase the power output of the electric motors 

it is connected to. Oversize motors are available both on the 

delivery and the return lines. 

High effi ciency pocket fi lters 

Rigid pocket fi lters are available as addition to standard fi lters. 

They are made from F7 effi ciency fi breglass paper and are 

Class 1 fi re resistant. Mounted on the treatment coil inlet, they 

ensure that the air effectively introduced into the room is fi ltered. 

Inspection hatches make them easy to replace.. 

Differential fi lter pressure switch 

Excessively dirty fi lters, with consequent reduction of the airfl 

ow, can be signalled by installing a differential pressure 

switch showing an excessive pressure drop in the fi lters. This 

situation, which penalises the rest of the unit, can be displayed 

by taking a clean signal from a pair of terminals. This alarm 

does not stop the unit. 

Roof-curbs 

This series of units is normally fi tted with the air delivery and/or 

return pointing downwards to allow rooftop installation directly 

over the rooms they condition. To ensure the Roof-Top units 

perfectly match the ducts and prevent water infi ltration, a frame 

can be installed on site. Its special gaskets offer excellent 

sealing between the parts as well as allowing the unit to be 

positioned correctly. 


7 

Humidifi er 

During winter it may be necessary to correct relative humidity 

when the heating of external air with low enthalpic values would 

worsen room comfort. In this case the treated air must be humidifi 

ed before it re-enters the room. Humidifi cation takes place 

directly inside the unit using a steam diffuser immersed in the 

fl ow of treated air. The steam is generated inside an immersed 

electrode humidifi er. ON/OFF adjustment. 

Enthalpix FreeCooling 

This function is interesting in particular for mid-season use. It is 

piloted by temperature and humidity probes installed either in 

return and fresh air dampers which calculate the internal and 

external enthalpy, so fi xed the enthalpix set-pont to control, the 

free-cooling will be put in action when the thermo-hygrometric 

conditions are good that is when the external enthalpy is close 

at the fi xed set-point on the controller: in this way the freecooling 

damper will open and the fi xed set can be reached by 

the fresh air. During this working mode the 100 % Freecooling 

mode can begin when all the resourses are disconnect. 

Forced shut down 

This function trippers a dedicated procedure which stops the 

compressor and all the fans. If the FCS and FCC sections are 

fi tted, the external valves are also closed. 

Forced air expulsion, remote 

Only available on units fi tted with FCC. This function triggers 

a dedicated procedure which closes the recirculation valve, 

opens the expulsion valve and fresh air valve, stops the compressors 

and forces the intake and discharge fans to start. If 

this option is selected, the electrical panel of the unit is factoryfi 

tted to acquire the remote signal which starts this procedure. 

(See fi g. 12). 

Remote room washing override and start-up (AIR 3000) 

Only available on units fi tted with FCC. This function washes 

the room by closing the recirculation valve and opening the expulsion 

and external air intake valve in order to rapidly change 

stale air; the empty room is then taken to the required temperature 

by circulating the same air and then closing the fresh air 

valve and expulsion valve. (See fi gs. 9 and 10). 


HFC R410A

CO 2 control probe 

This probe allows the level of crowding in the room to be checked 

by analysing the concentration of CO2 exhaled by people. 

The signal is processed by the control unit in order to adjust the 

external air intake, thus guaranteeing compliance with personal 

wellbeing regulations. 

Differential air pressure switch (air fl ow) 

This stops the unit if no appreciable difference in air pressure 

is detected as this is a sign of a fault either in either the drive 

or the fan motor. 

Recirculation air valve 

Can be combined with the MIX version to adjust the quantity of 

air to remove from the room. It is sized for 100% of fl ow capacity 

and can be motorised. 

Valve drive 

The external air intake valve AE and the recirculation valve 

SRIC, if present, can be powered with a servocommand in the 

MIX version. The power and control units are located outside 

the unit and must be managed by the customer. If control is 

required, order the FCS version in which these functions are 

already implemented. 

Additional section 

650 mm technical area for installing the steam humidifi er, bag 

fi lters or other uses according to customer requirements. 


8 

Antifreeze thermostat 

Mounted on the plate exchanger, it prevents the water in the 

loop from freezing. 

The following ACCESSORIES are also available: 

Air outlet from right or left sides (with respect to air fl ow) 

- Air outlet from top 

- High and low pressure gauges (cooling circuit) 

- Electrical panel with forced ventilation 

- Phase sequence relay 

- Overload cut-out 

- Ambient temperature probe supplied loose for installation in 

the room or on the intake duct 

- AIR 3000 control unit (for sizes 102÷302, standard for other 

sizes) 

- Remote keypad for AIR 3000 

- FWS Supervision 

- Internal humidity probe 

- 4-20 mA external signal override for controlling the opening of 

the external air gate valve 

- Fitting for control from customer thermostat (only for sizes 

102÷302) 

- Fitting for software connection: RS485 


HFC R410A

MIXING BOX OPERATING MODES 

AIR TREATMENT 

External Air and Recirculation Air Mix 

(STANDARD MODE) 

Boxes: MIX and FCS (Fig. 5), FCC (Fig. 6). 

Period: All year. 

Function: Ambient conditioning during normal use. For 

the FCC box the quantity of expelled air corresponds 

to the quantity of incoming external air (in pressure balance), 

while for the MIX and FCS boxes the quantity of 

external air corresponds to the difference between deli- 

Free-Cooling (cold-only mode) 

Free-Heating (heat pump mode) 

Period: Mid-season. 

Boxes: FCS (Fig. 7) and FCC (Fig. 8). 

Function: When external air conditions allow, this function 

is enabled in order to use the external air (A.E. 100% 

max.), possibly mixed with recirculation air, to achieve or 


9 

very air and intake/recirculated air as the expulsion valve 

does not exist. The percentage of the mix, even with elevated 

percentages of External Air (75% max.) changes 

according to the manual or automatic values (CO 2 probe: 

optional) sent to the control unit which in turn controls 

the valves. 

maintain the required ambient conditions without using 

existing compressors or heat sources. 


HFC R410A

External Air only (WASHING) 


Box: FCC (Fig. 9) 

Function: Room washing with external air. 

Used when the room has not been used for a long time 

Recirculation Air only (START-UP) 


Boxes: FCS (Fig. 10) and FCC (Fig. 11). 

Function: Heating the empty room rapidly by recirculating 

the same air. This function is used after the room wa- 

Remote forced expulsion 

Only for units with FCC (Fig. 12). 

This function triggers a dedicated procedure which closes 

the recirculation valve, opens the expulsion and air 

intake valves, stops the compressors and forces the intake 

and discharge fans to start. If this option is selected, 


10 

or whenever all the ambient air requires rapid changing. 

The compressors do not work during this procedure 

shing function (only for FCC box). 

the electrical panel of the unit is factory-fi tted to acquire 

the remote signal which starts this procedure. 


HFC R410A

HYDRAULIC CIRCUIT 

Constant fl ow closed loop 

The closed loop fed with water at a constant fl ow is the 

standard application involving summer heat dispersion 

by means of a closed circuit cooling tower in order to 

prevent dirtying the water; in winter, the temperature is 

Variable fl ow closed loop 

The closed loop fed with water at a variable fl ow allows 

the quantity of water to be modifi ed depending on system 

requirements; moreover, when the compressors are off 

the powered on/off valve interrupts the fl ow of water le- 

Water source 

Systems fed with water source are used when sources of 

water such as wells, rivers and lakes are available. There 

are, however, potential problems connected with the 

impurities contained in the water when it is used directly 


11 

kept constant by a boiler. 

aving the plate exchanger. The rest of the application is 

similar to the previous one. 

for heat exchange purposes as the condenser requires 

periodic cleaning in order to remove mineral deposits. 


HFC R410A

FWS Supervision (optional) 

The FWS supervision system allows the system to be monitored 

without having to install any additional software onto the 

dedicated supervision PC’s as standard applications (Internet 

Explorer, Netscape,...) that are normally already installed on 

PC’s are used. The FWS module is generally installed near the 

PC. The units communicate with the module along an RS 485 

local network for a maximum distance of 1,000 metres, while 

the module and the PC either communicate directly or along 

an Ethernet network (LAN). The supervision PC shows the following 

information for each unit: 

- unit status and alarms 

- main temperatures 

- set-points and operating mode 

- compressor status and operating hours 

The following can be set and modifi ed: 

- unit operation mode 

- operating set-points (temperature and humidity) and relative 

proportional bands 

- room washing override 

- rapid start-up up override 

- weekly/daily programming with fi ve time bands 

- Water loop system temperature: Inlet/Outlet from cooling tower 

and boiler 

- Loop system pressure: Inlet/Outlet from pumping unit 

If the supervisor is deactivated, each single unit may work 

normally using the on-board thermoregulation device. Alarm 

events are logged for each unit by storing the date/ time/code/ 

description of each fault and the relative reset date/time. 

The supervisor user interface has been organised like a web- 


12 

site with dynamic and customisable pages. If the dedicated 

supervision PC is connected to the Internet, the Climaveneta 

technical assistance report function can be confi gured on the 

FWS, showing all the information required to identify the reason 

for the alarm: date, time, code and description. The same message 

can be sent to a GSM cellular phone via SMS, if required. 

For equipment not supplied by Climaveneta (e.g. exhaust fans, 

split,...), the FWS supervisor allows commands to be made 

through volt-free contacts and temperatures to be read through 

NTC probes. 


HFC R410A

GENERAL TECHNICAL DATA 

SIZE 704 804 904 1004 1104 1204 

BIG WET RTF 

Cooling 

Cooling capacity kW 241,1 269,8 295,0 346,7 366,2 388,0 

Sensible cooling capacity kW 173,0 191,5 208,4 241,6 249,4 262,5 

Compressor power input kW 48,4 55,4 61,5 70,6 75,6 72,5 

Total power input kW 60,4 71,4 83,5 92,6 97,6 94,5 

EER 5,0 4,9 4,8 4,9 4,8 5,4 

Heating 

Heating capacity kW 291,6 335,4 375,5 429,0 461,8 492,2 

Compressor power input kW 62,7 77,2 91,6 97,9 110,4 125,2 

Total power input kW 74,7 93,2 113,6 119,9 132,4 147,2 

COP 4,7 4,3 4,1 4,4 4,2 3,9 

Plate exchanger 

Waterfl ow rate m3 /h 41,5 46,7 51,2 59,9 63,4 66,1 

Pressure drop kPa 91,2 99,2 107 91,2 94,4 98,3 

Hydraulic connections inch 3” 3” 3” 3” 3” 3” 

Outlet fans 

Type Centrifugo 

Number n 4 4 4 4 4 4 

Supply airfl ow rate m3 /h 45.000 50.000 54.000 56.000 56.000 56.000 

Available static pressur Pa 235 255 400 290 290 290 

Power input kW 3,0 4,0 5,5 5,5 5,5 5,5 

Compressors 

Type 

Number of compreso n 4 4 4 4 4 4 

Number of circuits n 2 2 2 2 2 2 

Capacity steps n 4 4 4 4 4 4 

Charge 

Refrigerant kg 42 45 48 52 58 64 

Oil kg 29.2 32.0 32.0 32.0 26.2 25.2 

Standard unit dimensions 

Length mm 5.000 5.000 5.000 5.000 5.000 5.000 

Width mm 2.330 2.330 2.330 2.330 2.330 2.330 

Height mm 2.240 2.240 2.240 2.240 2.240 2.240 

Standard unit operating weight kg 2.770 3.000 3.200 3.250 3.300 3.350 

Total sound power dB(A) 

Version B * * * * * * 

Version FCC * * * * * * 

Version FCS * * * * * * 

Version MIX * * * * * * 

Standard conditions 

Cooling Internal air 19.5 °C w.b. 

Heating Internal air 20 °C d.b. 

Water temperature in loop 

Summer IN 29°C OUT 35°C 

Winter OUT 10°C 


13 

(*) Values currently being defi ned. For further information, 

consult the pages referring to sound levels. 


HFC R410A

Effi ciency at different airfl ow rates 

(nominal conditions) 


SIZE 0704 0804 0904 1004 1104 1204 

Minimun airfl ow m3 /h 36.000 40.000 43.200 44.800 44.800 44.800 

Cooling capacity kW 230 258 281 330 348 369 

Heating capacity kW 288 334 371 423 454 485 

Nominal airfl ow m3 /h 45.000 50.000 54.000 56.000 56.000 56.000 



Maximum airfl ow m3 /h 58.000 58.000 58.000 58.000 58.000 58.000 



14 


HFC R410A

Lengths of units in various construction 

confi gurations 

Size 

0704 ÷ 

1204 

BASE+ 

F.T. 

BASE+ 

MIX/FCS 

BASE+ 

FCC 

BASE+ 

MIX/FCS+ 

F.T. 

BASE+ 

FCC+ 

F.T. 

Confi guration 

Unit Lenght 

[mm] 

BASE+ 

MT 

BASE+ 

MIX/FCS+ 

MT 

BASE+ 

FCC+ 

MT 

BASE+ 

MT+ 

F.T. 

BASE+ 

MIX/FCS+ 

MT+ F.T. 

BASE+ 

FCC+MT+ 

F.T. 

5650 7030 7800 7680 8450 7030 9060 9830 7680 9710 10480 

Weights of units in various construction 

confi gurations 

Size 

BASE+ 

F.T. 

BASE+ 

MIX/FCS 

BASE+ 

FCC 

BASE+ 

MIX/ 

FCS+ 

F.T. 

BASE+ 

FCC+ 

F.T. 

Confi guration 

Unit Lenght 

[kg] 

BASE+ 

MT 

BASE+ 

MIX/ 

FCS+ 

MT 

BASE+ 

FCC+ 

MT 

BASE+ 

MT+ 

F.T. 

BASE+ 

MIX/ 

FCS+ 

MT+ F.T. 

BASE+ 

FCC+MT+ 

F.T. 

0704 2940 3080 3670 3360 3950 3580 4000 4590 3860 4280 4870 

0804 3120 3260 3850 3540 4130 3760 4180 4770 4040 4460 5050 

0904 3130 3270 3860 3550 4140 3770 4190 4780 4050 4470 5060 

1004 3190 3300 3920 3610 4200 3830 4250 4840 4110 4530 5120 

1104 3320 3460 4050 3740 4330 3960 4380 4970 4240 4660 5250 

1204 3340 3480 4070 3760 4350 3980 4400 4990 4260 4680 5270 

Key: 

UM : Humidifi er 

F.T.: Rigid pocket fi lters 

MIX/FCS: MIX or FCS mixing box 

FCC: FCC mixing box 


15 

weights and dimensions with the following thermic modules 

0704: MT240 

0804: MT300 

0904: MT300 

1004: MT350 

1104: MT350 

1204: MT350 


HFC R410A

OUTLET FAN MOTOR CHARACTERISTICS 

BASE version 

Size 

0704 

0804 

0904 

1004 

1104 

1204 

Size 

Airfl ow Standard Uprated (MM1) Extra-Uprated (MM2) 

m 3 /h 

Pa (1) 

rpm 

(1) Pa: Useful static head in standard conditions with ducted outlet 

(2) Pa: Useful static head in standard conditions with free intake 

kW 

Pa 

kW Pa 

kW 

rpm 

rpm 

(1) 

ass. inst. (1) 

ass. inst. ass. inst. 

Min 36000 520 874 9.99 12.0 740 1023 13.09 16.0 1070 1221 18.32 22.0 

Std 45000 235 716 9.99 12.0 440 856 13.09 16.0 760 1053 18.32 22.0 

Max 58000 --- --- --- --- --- --- --- --- 230 830 18.32 22.0 

Min 40000 610 953 13.09 16.0 925 1146 18.32 22.0 --- --- --- --- 

Std 50000 255 782 13.09 16.0 550 963 18.32 22.0 915 1166 24.98 30.0 

Max 58000 --- --- 18.32 --- 210 830 18.32 22.0 570 1024 24.98 30.0 

Min 43200 820 1086 18.32 22.0 1200 1293 24.98 30.0 --- --- --- --- 

Std 54000 400 895 18.32 22.0 760 1094 24.98 30.0 --- --- --- --- 

Max 58000 230 830 18.32 22.0 585 1024 24.98 30.0 --- --- --- --- 

Min 44800 745 1058 18.32 22.0 1115 1262 24.98 30.0 --- --- --- --- 

Std 56000 290 862 18.32 22.0 640 1059 24.98 30.0 --- --- --- --- 

Max 58000 200 832 18.32 22.0 550 1024 24.98 30.0 --- --- --- --- 

Min 44800 745 1058 18.32 22.0 115 1262 24.98 30.0 --- --- --- --- 

Std 56000 290 862 18.32 22.0 640 1059 24.98 30.0 --- --- --- --- 

Max 58000 200 832 18.32 22.0 550 1024 24.98 30.0 --- --- --- --- 

Min 44800 745 1058 18.32 22.0 115 1262 24.98 30.0 --- --- --- --- 

Std 56000 290 862 18.32 22.0 640 1059 24.98 30.0 --- --- --- --- 

Max 58000 200 832 18.32 22.0 550 1024 24.98 30.0 --- --- --- --- 

Characteristics of inlet fan in section FCC (optional) 

Airfl ow Standard Uprated (MM1) Extra-Uprated (MM2) 

m 3 /h 

Pa (1) 

rpm 


kW 

Pa 

kW Pa 

kW 

rpm 

rpm 

(1) 

ass. inst. (1) 

ass. inst. ass. inst. 

0704 Std 45000 230 717 9.99 12.0 445 863 13.09 16.0 750 1053 18.32 22.0 

0804 Std 50000 265 781 13.09 16.0 560 961 18.32 22.0 925 1166 24.98 30.0 

0904 Std 54000 368 895 18.32 22.0 760 1093 24.98 30.0 --- --- --- --- 

1004 Std 56000 320 863 18.32 22.0 675 1058 24.98 30.0 --- --- --- --- 

1104 Std 56000 320 863 18.32 22.0 675 1058 24.98 30.0 --- --- --- --- 

1204 Std 56000 320 863 18.32 22.0 675 1058 24.98 30.0 --- --- --- --- 

16 


HFC R410A

ELECTRICAL DATA 

Electrical data for BASE, MIX and FCS versions 

Size n 

0704 4 

F.L.I. 

[kW] 

17,44 

(24,04) 

Compressors 

F.L.A. 

[A] 

30,62 

(40,03) 

Maximum values 

L.R.A. 

[A] 

n 

Outlet fan each 

(1) 

F.L.I. 

[kW] 

F.L.A. 

[A] 

F.L.I. 

[kW] 

Total (1) 

F.L.A. 

[A] 

S.A. 

[A] 

215,00 4 3,63 6,44 97,48 167 342 

0804 4 24,04 40,03 215,00 4 4,71 8,40 115 194 369 

0904 4 

23,80 

(30,11) 

39,80 

(46,40) 

260,00 4 6,34 11,20 133 217 431 

1004 4 30,11 46,40 260,00 4 6,34 11,20 146 230 444 

1104 4 

Electrical data for FCC version 

Size n 

0704 4 

30,11 

(35,26) 

46,40 

(56,40) 

320,00 4 6,34 11,20 156 250 514 

1204 4 35,26 56,40 320,00 4 6,34 11,20 166 270 534 

F.L.I. 

[kW] 

17,44 

(24,04) 

Compresssors 

F.L.A. 

[A] 

30,62 

(40,03) 

L.R.A. 

[A] 

(1) Standard motors 

F.L.I. Absorbed power at max. permissible conditions 

F.L.A. Absorbed current at max. permissible conditions 

L.R.A. Peak current of single compressor 

S.A. Peak current of unit with standard motors 

Maximumvalues 

n 

Outlet fan each 

(1) 

F.L.I. 

[kW] 

F.L.A. 

[A] 

n 

Inlet fan each (1) Total 

F.L.I. 

[kW] 

F.L.A. 

[A] 

F.L.I. 

[kW] 

F.L.A. 

[A] 

S.A. 

[A] 

215,00 4 3,63 6,44 4 3,63 6,44 112 193 368 

0804 4 24,04 40,03 215,00 4 4,71 8,40 4 4,71 8,40 134 227 402 

0904 4 

23,80 

(30,11) 

39,80 

(46,40) 

260,00 4 6,34 11,20 4 6,34 11,20 159 262 476 

1004 4 30,11 46,40 260,00 4 6,34 11,20 4 6,34 11,20 171 275 489 

1104 4 

30,11 

(35,26) 

46,40 

(56,40) 


320,00 4 6,34 11,20 4 6,34 11,20 181 295 559 

1204 4 35,26 56,40 320,00 4 6,34 11,20 4 6,34 11,20 192 315 579 

17 

Electrical power input: 

- 400/3/50 WITHOUT NEUTRAL 

- Permissible voltage variation 10% 

- Maximum unbalance between phase voltages 3% 


HFC R410A

OPERATING LIMITS 

OPERATING LIMITS IN COOLING MODE 

T H 0= Temperature of the water entering the plate exchanger 

2 

Ta= Dry bulb temperature of the air entering the fi nned exchanger 

Maximum temperature of loop water with unit off=60°C 

OPERATING LIMITS IN HEATING MODE 

TH 2 0= Temperature of the water entering the plate exchanger 

Ta= Dry bulb temperature of the air entering the fi nned exchanger 

Ta [°C] 

OPERATING LIMITS CALCULATED IN THE FOLLOWING CONDI- 

TIONS: 

- Standard air fl ow 

- Unit correctly installed and used 

- Operating at full load 

Ta [°C] 

40 

35 

30 

25 

20 

15 

10 

5 

0 

-5 

-10 

30 

25 

20 

15 

10 


SYSTEM WITH WATER SOURCE 

In units with condensation pressure adjustment, the minimum inlet water 

temperature of the plate exchanger may fall under the indicated 

values. 

5 

10 15 20 25 30 35 40 45 50 55 60 65 

TH2O [°C] 

If minimum temperatures are exceeded, use a glycol solution (consult 

the manufacturer) 

-15 

5 10 15 20 25 30 

TH2O [°C] 

18 


HFC R410A

PRESSURE DROPS ON THE HYDRAULIC CIRCUIT 

N.B.: The graphs refer to a hydraulic circuit with scalefree components. 

If this is not the case, it will be necessary to use suitable corrective dirt 

collection coeffi cients. 

WITH MANUAL INTERCEPTOR ON/OFF VALVE 

Dp [kPa] 

1000 

100 

10 

1 

10 100 

WITH MOTORIZED INTERCEPTOR ON/OFF VALVE 

Dp [kPa] 

1000 

100 

10 

1 


Q [mc/h] 

10 100 

Q [mc/h] 

19 

0704 

0804 

0904 

1004 

1104 

1204 

0704 

0804 

0904 

1004 

1104 

1204 


HFC R410A

HYDRAULIC CONNECTION DIAGRAMS 

CLOSED LOOP WITH CONSTANT FLOW 

CLOSED LOOP WITH VARIABLE FLOW 

WATER SOURCE 

KEY 

1. Antifreeze thermostat 

2. Differential pressure switch 

3. Water side steel mesh fi lter 

4. Two-way on/off valve 

5. Motorized on/off two-way valve 

6. Modulating motorized on/off two way valve 

1 

1 

T 

1 

1 

1 

T 

1 

T 

T 

T 

T 

PD 

PD 

PD 

PD 

PD 

PD 

6 

2 

6 

2 

2 

2 

5 

2 

5 

2 


3 

3 

3 

3 

3 

3 

4 

4 

4 

4 

4 

4 

4 

4 

4 

4 

4 

4 

20 

Climaveneta 

supply limit 

Climaveneta 

supply limit 

Climaveneta 

supply limit 


HFC R410A

Climaveneta S.p.A. 

Via Sarson 57/c 

36061 Bassano del Grappa (VI) 

Italy 

Tel +39 0424 509 500 

Fax +39 0424 509 509 

info@climaveneta.com 

www.climaveneta.com 

Climaveneta Home System 

Via Duca d’Aosta 121 

31030 Mignagola (TV) 

Italy 

Tel +39 0422 4131 

Fax +39 0422 413659 

info.cvhs@climaveneta.com 


Climaveneta France 

3, Village d’Entreprises 

ZA de la Couronne des Prés 

Avenue de la Mauldre 

78680 Epône 

France 

Tel +33 (0)1 30 95 19 19 

Fax +33 (0)1 30 95 18 18 

info@climaveneta.fr 

www.climaveneta.fr 

Climaveneta Deutschland 

Rhenus Platz 2 

59439 Holzwickede 

Germany 

Tel +49 2301 91222-0 

Fax +49 2301 91222-99 

info@climaveneta.de 

www.climaveneta.de 

Climaveneta 

España - Top Clima 

Londres 67, 1 4 

08036 Barcelona 

Spain 

Tel +34 934 195 600 

Fax +34 934 195 602 

topclima@topclima.com 


Climaveneta Chat Union 

Refrig. Equipment Co Ltd 

88 Bai Yun Rd, Pudong Xinghuo 

New dev. zone 201419 Shanghai 

China 

Tel 008 621 575 055 66 

Fax 008 621 575 057 97 

Climaveneta Polska Sp. z o.o. 

Ul. Sienkiewicza 13A, 

05-120 Legionowo, 

Poland 

Tel +48 22 766 34 55-57 

Fax +48 22 784 39 09 

info@climaveneta.pl 

www.climaveneta.pl 

www.climaveneta.com

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