tcaes 230÷4160 thae - Rhoss

ISTRUZIONI PER L’USO
INSTRUCTIONS FOR USE
MODE D'EMPLOI
GEBRAUCHSANWEISUNG
INSTRUCCIONES DE USO
TCAE – TCAES 230÷4160
THAE – THAES 230÷4160
STANDARD
version
TANK & PUMP
version
PUMP
version
Packaged water chillers and reversible heat pumps, air
cooled with axial fans.
Packaged water chillers and reversible heat pumps, air
cooled with axial fans.
Version with built-in pumping group and water tank.
Packaged water chillers and reversible heat pumps, air
cooled with axial fans.
Version with built-in pumps.
H50429
GB ed. 1

Dichiarazione di conformità
La società RHOSS S.p.A.
con sede a Pordenone, Viale Trieste, 15, dichiara, sotto la propria
esclusiva responsabilità, che i prodotti della serie
TCAE – TCAES – THAE – THAES 230÷4160
sono conformi ai requisiti essenziali di sicurezza di cui alla Direttiva
Macchine 89/392/CEE come modificata da 91/368, 93/44, 93/68/CEE e
attuate in Italia dal DPR 459 del 24 Luglio 1996.
E’ pertanto altresì conforme alla Direttiva Europea 98/37/CEE che
abroga e sostituisce la Direttiva 89/392 e i suoi emendamenti, che le
raggruppa in un testo unico e mantiene invariate le disposizioni ai fini
della marcatura CE ed i requisiti essenziali di sicurezza.
------------
La macchina è inoltre conforme alle seguenti direttive:
- 73/23/CEE (Bassa Tensione) come modificata da 93/68/CEE
- 89/336/CEE (Compatibilità Elettromagnetica) come modificata da 93/68/CEE
Statement of conformity
RHOSS S.p.A.
located in Viale Trieste 15, Pordenone, Italy, hereby states on its own
exclusive responsibility that the products in the
TCAE – TCAES – THAE – THAES 230÷4160
product range comply with the fundamental safety requirements of Machine
Directive 89/392/CEE as modified by 91/368, 93/44, 93/68/CEE and put into
effect in Italy by Presidential Decree DPR459 dated 24 July 1996.
The aforesaid products also comply with European Directive 98/37/CEE
which rescinds and replaces Directive 89/392 and amendments thereto,
which groups together and maintains unaltered the provisions required by
the CE mark and fundamental safety requirements.
------------
The machine also complies with the following directives:
- 73/23/CEE (Low Voltage) as modified by 93/68/CEE
- 89/336/CEE (Electromagnetic Compatibility) as modified by 93/68/CEE
Déclaration de conformité
La société RHOSS S.p.A.
dont le siège se trouve à Pordenone, Viale Trieste, 15, déclare, sous sa
responsabilité exclusive, que les produits de la série
TCAE – TCAES – THAE – THAES 230÷4160
sont conformes aux critères essentiels de sécurité requis par la
Directive Machines 89/392/CEE et à ses modifications 91/368, 93/44 et
93/68/CEE, adoptées en Italie par le D.P.R. 459 du 24 juillet 1996.
Ils sont donc également conformes à la Directive Européenne
98/37/CEE qui abroge et remplace la Directive 89/392 et ses
amendements, et les regroupe dans un texte unique en laissant
inchangées les dispositions relatives au marquage CE et aux critères
essentiels de sécurité requis.
------------
En outre, la machine est conforme aux directives suivantes:
- 73/23/CEE (Basse tension) modifiée par la 93/68/CEE
- 89/336/CEE (Compatibilité électromagnétique) modifiée par la 93/68/CEE
Konformitätserklärung
Declaración de conformidad
Der Hersteller RHOSS S.p.A.
mit Geschäftssitz in Pordenone, Viale Trieste 15, erklärt eigenverantwortlich,
dass die Geräte der Baureihe
TCAE – TCAES – THAE – THAES 230÷4160
den wesentlichen Sicherheitsanforderungen gemäß der Maschinenrichtlinie
89/392/EWG und den nachträglichen Änderungsrichtlinien 91/368/EWG,
93/44/EWG und 93/68/EWG entsprechen.
Die Baureihe erfüllt also darüber hinaus die Richtlinie 98/37/EWG, welche die
Maschinenrichtlinie 89/392/EWG mitsamt ihren Änderungsrichtlinien ersetzt und
unter Wahrung der Vorschriften hinsichtlich der CE Kennzeichnung sowie der
wesentlichen Sicherheitsanforderungen in einem übergeordneten Regelwerk
zusammenstellt.
------------
Die Geräte entsprechen außerdem folgenden Richtlinien:
- 73/23/EWG (Niederspannung) und der Änderungsrichtlinie 93/68/EWG
- 89/336/CEE (Elektromagnetische Verträglichkeit) und der Änderungsrichtlinie 93/68/EWG
La empresa RHOSS S.p.A
con sede en Pordenone, Viale Trieste 15, declara bajo su única
responsabilidad que los productos de la serie
TCAE – TCAES – THAE – THAES 230÷4160
cumplen con los requisitos básicos de seguridad de conformidad con la
Directiva de maquinaria 89/392/CEE modificada en 91/368, 93/44,
93/68/CEE y aplicadas en Italia por el DPR459 del 24 de julio de 1996.
Por tanto, también cumplen con la Directiva europea 98/37/CEE, que
deroga y sustituye a la Directiva 89/392 y sus enmiendas,
agrupándolas en un texto único sin modificar las disposiciones relativas
a la marca CE y los requisitos esenciales de seguridad.
------------
La máquina también cumple las disposiciones de las siguientes directivas
-73/23/CEE (Baja tensión), en su modificación de 93/68/CEE
-89/336/CEE (Compatibilidad electromagnética), en su modificación de
93/68/CEE
Pordenone, lì 15 Luglio 2002
L’Amministratore delegato / The Managing Director,
L’Administrateur délégué Der Geschäftsführer/ El gerente
Alessandro Zen
2

INDEX
INDEX
KEY TO SYMBOLS
I SECTION I: USER ...................................................................................4
I.1 Standard conditions of use ..................................................................................................4
I.1.1 Machine identification................................................................................................................4
I.1.2 Control board features ..............................................................................................................4
I.1.3 Working restrictions...................................................................................................................4
I.1.4 Warning about potentially toxic substances ..........................................................................4
I.1.5 Information about residual risks and irremovable hazards .................................................5
I.2 Description of controls ..........................................................................................................5
I.2.1 Main switch.................................................................................................................................5
I.2.2 User interface panel ..................................................................................................................5
I.3 Instructions for use.................................................................................................................6
I.3.1 Power supply to the unit ...........................................................................................................6
I.3.2 Disconnection from the power supply mains.........................................................................6
I.3.3 start up.........................................................................................................................................6
I.3.4 Stand-by......................................................................................................................................6
I.3.5 Changing the operating mode (THAE-THAES only)............................................................6
I.3.6 Shutdown....................................................................................................................................6
I.3.7 Setting the summer, winter and antifreeze set points..........................................................6
I.3.8 Status indicator leds..................................................................................................................7
I.3.9 Alarm signals..............................................................................................................................7
I.4 Type and frequency of scheduled maintenance.............................................................7
I.4.1 Maintenance work......................................................................................................................7
II SECTION II: INSTALLATION AND MAINTENANCE ..............................8
II.1.1 Machine description..................................................................................................................8
II.1.2 Working restrictions...................................................................................................................8
II.1.3 Factory fitted accessories.........................................................................................................8
II.1.4 Accessories supplied separately.............................................................................................8
II.1.5 Warning about potentially toxic substances ..........................................................................9
II.1.6 Noise emissions.........................................................................................................................9
II.1.7 Transport – handling and storage...........................................................................................9
II.1.8 Packaging, components ...........................................................................................................9
II.1.9 Lifting and handling models 230÷260.....................................................................................9
II.1.10 Lifting and handling models 470÷4160..................................................................................9
II.1.11 Storage conditions...................................................................................................................10
II.2 Installing the unit ...................................................................................................................10
II.2.1 Clearances................................................................................................................................10
II.2.2 Weight distribution...................................................................................................................10
II.2.3 Water connections...................................................................................................................10
II.2.4 Electrical connections .............................................................................................................11
II.2.5 Remote management using connections set up by the installer.....................................12
II.2.6 Noise reduction........................................................................................................................12
II.3 Operation and adjustment ..................................................................................................12
II.3.1 Control board............................................................................................................................12
II.3.2 General features of the microprocessor control system....................................................13
II.3.3 Status indicator leds................................................................................................................16
II.3.4 Starting and stopping the machine start up after long periods of inactivity....................16
II.3.5 Calibrating safety and control devices..................................................................................16
II.3.6 Alarm table................................................................................................................................16
II.4 Scheduled maintenance ......................................................................................................17
II.4.1 Preventive maintenance.........................................................................................................17
II.4.2 Check-ups, cleaning and adjustment...................................................................................17
II.4.3 Seasonal breaks ......................................................................................................................18
II.5 Special maintenance ............................................................................................................18
II.5.1 Repairs and component replacement..................................................................................18
II.5.2 Dismantling the unit – disposal of hazardous components/substances .........................19
II.5.3 Troubleshooting.......................................................................................................................20
ENCLOSED DOCUMENTS
SYMBOL
MEANING
DANGER!
The DANGER sign warns the operator and
maintenance personnel about risks that may cause
death, physical injury, immediate or latent illnesses
of any form.
DANGER: LIVE COMPONENTS!
The DANGER: LIVE COMPONENTS sign warns the
operator and maintenance personnel about risks
due to the presence of live voltage.
DANGER: SHARP SURFACES!
The DANGER: SHARP SURFACES sign warns the
operator and maintenance personnel about the
presence of potentially dangerous surfaces.
DANGER: HOT SURFACES!
The DANGER: HOT SURFACES sign warns the
operator and maintenance personnel about the
presence of potentially dangerous hot surfaces.
DANGER: MOVING PARTS!
The DANGER: MOVING PARTS sign warns the
operator and maintenance personnel about risks
caused by the presence of moving parts.
IMPORTANT WARNING!
The IMPORTANT WARNING sign indicates actions
or hazards that could damage the unit or its
equipment.
ENVIRONMENT SAFEGUARD
The environment safeguard sign provides
instructions on how to use the machine in an
environment friendly manner.
A1
A2
A3
A4
A5
Geometric features of the STANDARD VERSION
Geometric features of VERSIONS WITH INTEGRATED ASP ACCUMULATION
ASSEMBLY (TANK & PUMP)
Geometric features of the VERSION WITH MOTOR PUMP (PUMP)
Hook-up diagram
Technical features
• This manual is an official company document, it cannot be
used orreproduced without authorisation from RHOSS SpA.
• The RHOSS SpA technical service centres can be contacted
forall queries regarding the use of its products, should the
information in the manuals prove to be insufficient.
• RHOSS SpA reserves the right to alter the features of their
products without notice in the interests of continuous
improvement.
3

SECTION I: USER
I
SECTION I: USER
I.1 STANDARD CONDITIONS OF USE
TCAE-TCAES units are monobloc water chillers featuring air-cooled
condensers.
THAE-THAES units are monobloc heat pumps featuring air-cooled
evaporation/condensation and water-cooled condensation/evaporation.
Both ranges are equipped with axial-flow fans and are designed for
outdoor installation. The units are intended for use in air conditioning
systems or industrial processes requiring a supply of chilled water
(TCAE-TCAES) or chilled and heated water (THAE-THAES).
DANGER!
The machine must be installed outdoors. Segregate
the unit if installed in areas accessible to persons
under 14 years of age.
DANGER!
Do not introduce pointed objects through the air
delivery or intake grilles.
I.1.3
I.1.3.1
WORKING RESTRICTIONS
During cooling function
I.1.1
IMPORTANT!
The unit will only function correctly if the
instructions for use are scrupulously followed, if
the clearances are complied with during installation
and if the operating restrictions indicated in this
manual are strictly adhered to.
IMPORTANT!
Non compliance with the recommended clearances
during installation will cause the unit to function
inefficiently with an increase in power input and a
considerable reduction in cooling (or heating)
power.
MACHINE IDENTIFICATION
The units feature a serial number plate located on the side which
includes machine identification data (Fig. 1)
Standard operation
Operation with FI10 accessory
T (°C)= temperature of produced water
t (°C)= b.s. outdoor air temperature
• thermal head on the evaporator: ∆t=3÷8°C.
○ The units may be supplied on request for the production of chilled
water at temperatures below 4°C.
I.1.3.2 During heat pump function
SERIAL NUMBER
MODEL
Power supply
Power input
Max. Current
Breakaway current
Degree of Protection
Type of coolant
C oolant charge
Oil charge
Oil differential pressure
Max. Gas pressure
Min. Gas pressure
V / ph / Hz
kW
A
A
IP
kg
kg
kPa
kPa
kPa
Max. H2O pressure
Fig. 1
The electrical data written on the registration plate placed on the
unit refer to a fully equipped machine.
I.1.2 CONTROL BOARD FEATURES
The control board is designed and manufactured in compliance with
European Standard EN 60204-1 (Machine Safety – Machine Electrical
Equipment - Part 1: General Rules) according to the dictates of §1.5.1
of the Machine Directive.
Each unit is equipped with a type “b” general isolator (EN 60204-1 §
5.3.2).
Only qualified personnel may access the electrical parts of the
appliance in accordance with IEC recommendations. It is particularly
important to disconnect all electrical power circuits and, therefore, the
general isolator before carrying out any work on the appliance.
kPa
Standard operation
T (°C) = temperature of produced water
t (°C) = outdoor air temperature (70% relative humidity)
• thermal head on the evaporator: ∆t=3÷8°C.
I.1.4 WARNING ABOUT POTENTIALLY TOXIC
SUBSTANCES
DANGER!
Read with care the following information about the
coolants employed.
I.1.4.1 Identification of the type of coolant
employed
• Difluoromethane (HFC-32) 23% in weight
CAS N°: 000075-10-5
• Pentafluoroethane (HFC-125) 25% in weight
CAS N°: 000354-33-6
• 1, 1, 1, 2 - Tetrafluoroethane (HFC-134a) 52% in weight
CAS N°: 000811-97-2
4

SECTION I: USER
I.1.4.2
Identification of the type of oil employed
A polyolester lubricant is employed. In any case, please refer to the
indications on the data plate located on the compressor.
DANGER!
For further information regarding the
characteristics of the coolant and lubricant
employed, please refer to the safety information
sheets available from the coolant and lubricant
manufacturers.
I.1.4.3 Main ecological information regarding the
types of coolant employed
ENVIRONMENT SAFEGUARD!
Carefully read the following ecological information
and provisions.
• Persistence and degradation
The product decomposes relatively quickly in the lower atmosphere
(troposphere). The decomposition by-products are highly dispersible
and therefore have a very low concentration. The products do no affect
photochemical smog (that is they are not classified as VOC volatile
organic compounds in compliance with the guidelines established by
the UNECE agreement). R32, R125 and R134a fluids (contained in all
the units) do not destroy the ozone layer. These substances are
regulated by the Montreal Protocol (1992 Revision) and by CE
Regulation N° 2037/2000 dated 29 June 2000.
• Effects on effluent treatment
Waste products released into the atmosphere do not provoke long-term
water contamination.
• Exposure control/personal protection
Wear protective clothing and suitable gloves. Protect the eyes and face.
• Professional exposure limits:
HFC 32
TWA 1000 ppm
HFC 125 TWA 1000 ppm
HFC 134a TWA 1000 ppm – 4240 mg/m 3 (OES)
• Handling
DANGER!
The user and maintenance personnel must be
adequately informed about the risks of handling
potentially toxic substances. Failure to observe the
aforesaid indications may cause personal injury or
damage the unit.
Avoid inhaling high concentrations of vapour. Atmospheric
concentration must be reduced to a minimum and maintained at this
minimum level, well beneath the professional exposure limits. Vapour is
heavier than air, and thus hazardous concentrations may form close to
the floor, where overall ventilation may be poor. In this case, ensure
adequate ventilation. Avoid contact with naked flames and hot surfaces,
which could lead to the formation of irritating and toxic decomposition
by-products. Do not allow the liquid to come into contact with the eyes
or skin.
• Procedure in case of accidental coolant emission
Ensure adequate personal protection (using means of respiratory
protection) during clean-up operations.
If conditions are sufficiently safe, isolate the source of the leak.
If the entity of the spill is limited, allow the material to evaporate on
condition that adequate ventilation can be ensured. If the spill is
considerable, ventilate the area adequately. Contain the split material
using sand, soil, or any other suitable absorbent material.
Prevent the liquid from entering any discharge pipes, drains, sewers,
underground facilities or manholes because suffocating vapours may
form.
I.1.4.4 General toxicological information regarding
the type of coolant employed
• Inhalation
High atmospheric concentrations may cause anaesthetic effects with
possible loss of consciousness. Prolonged exposure may lead to an
irregular heart beat and provoke sudden death.
Higher concentrations may cause asphyxia due to the oxygen reduction
created in the atmosphere.
• Skin contact
Splashes of atomised liquid may provoke frostbite. The product is
probably not hazardous if absorbed through the skin. Repeated or
prolonged contact may remove natural skin oils, with consequent
dryness, cracking and dermatitis.
• Eye contact
Splashes of liquid may provoke frostbite.
• Ingestion
Although highly improbable, ingestion may provoke frostbite.
I.1.4.5 First aid measures
DANGER!
Adhere scrupulously to the warnings and first aid
procedures indicated below.
• Inhalation
Move the injured person away from the exposure area. Keep him/her
warm and allow him/her to rest. Administer oxygen if necessary.
Attempt artificial respiration if breathing has stopped or shows signs of
stopping. In case of cardiac arrest, attempt an external cardiac
massage and seek medical assistance.
• Skin contact
In the case skin contact, wash immediately with lukewarm water. Thaw
affected areas with water. Remove contaminated clothing. Clothing may
stick to the skin in the case of frostbite. If irritation, swellings or blisters
appear, seek medical assistance.
• Eye contact
Wash immediately with an eye bath solution or clean water. Hold the
eyelids away from the eyes for at least ten minutes.
Seek medical assistance.
• Ingestion
Do not induce vomit. If the injured person is conscious, rinse his/her
mouth with water and make him/her drink 200-300 ml of water.
Seek immediate medical assistance.
• Further medical care
Treat symptoms and carry out support therapy as indicted. Do not
administer adrenalin or similar sympathomimetric drugs following
exposure; there is a risk that these may induce cardiac arrhythmia.
I.1.5 INFORMATION ABOUT RESIDUAL RISKS
AND IRREMOVABLE HAZARDS
IMPORTANT!
Pay the utmost attention to the signs and symbols
located on the appliance.
If any risks remain in spite of the provisions adopted, or if there are any
potential or hidden risks, these are indicated by adhesive labels
attached to the machine in compliance with standard “ISO 7000”.
I.2 DESCRIPTION OF CONTROLS
The controls consist in the switches and the user interface panel
located on the appliance.
I.2.1 MAIN SWITCH
Manually controlled type “b” mains power supply disconnecting switch
(EN 60204-1 § 5.3.2).
I.2.2 USER INTERFACE PANEL
IMPORTANT!
The user may access the working set point
adjustment parameters of the unit. Technical
service personnel may access the management
parameters of the unit by using a password (access
reserved to authorised personnel only).
Fig. 2
set
5

SECTION I: USER
1 = DISPLAY:
displays the value of every parameter (e.g. outlet water temperature,
etc.), any alarm codes and the status of all machine resources.
2 = ON/OFF, RESET – DOWN key:
switches the appliance ON and OFF as well as resetting any alarms.
It also allows the user to scroll down the parameter values.
3 = MODE – UP key:
act on this key to select the function mode of the unit (stand-by,
summer or winter cycle). It also allows the user to scroll up the
parameter values.
4 = summer LED:
indicates that the unit is running in the cooling cycle.
5 = winter LED:
indicates that the unit is running in the heating cycle.
6 = compressor and defrosting LED:
indicates that the compressors are running or that the timer is delaying
compressor start-up (the LED flashes rapidly). In THAE-THAES
versions running in the winter cycle, this LED indicates that the unit is
carrying out a defrosting cycle (the LED flashes slowly).
7 = evaporator heating element LED:
indicates that the heating element on the evaporator is activated.
8 = power supply LED:
indicates that the unit is connected to the power supply.
I.3 INSTRUCTIONS FOR USE
I.3.1 POWER SUPPLY TO THE UNIT
Act on the general isolator with door interlock by turning the yellow
handle clockwise by 90°.
• The “power supply” LED lights up.
I.3.2 DISCONNECTION FROM THE POWER
SUPPLY MAINS
Act on the general isolator with door interlock by turning the yellow
handle anticlockwise by 90°.
• The “power supply” LED switches off indicating that the unit is no
longer connected to the power supply.
I.3.3 START UP
Press ON/OFF, RESET-DOWN for 2 seconds.
• The LED corresponding to the operating mode active at the time of
the last shutdown lights up and the inlet water temperature is displayed.
• The compressor delay timer LED starts to flash (compressor status
LED).
• After a certain time interval, the LED stops flashing and remains lit
indicating that the compressor has started up.
I.3.4 STAND-BY
Press the MODE key once or twice according to whether the winter or
summer operating mode is selected.
• The summer and winter mode LEDs switch off.
• The inlet water temperature continues to be displayed.
I.3.5 CHANGING THE OPERATING MODE (THAE-
THAES ONLY)
Press MODE.
• The LED corresponding to the current operating mode switches off
and the LED of the newly selected operating mode lights up.
• The compressor delay timer LED starts to flash (compressor status
LED).
• After a certain time interval, the LED remains lit, indicating that the
compressor has re-started.
I.3.6 SHUTDOWN
Press ON/OFF, RESET-DOWN for 2 seconds.
• The compressor and operating mode LEDs switch off.
• The "power" LED remains lit, indicating the unit is connected to the
power supply.
Editing adjustment variables from the keyboard
Parameter Function Adjustment limit Set value
Coo
HEA
H49
PSS
Cooling set
point
Heating set
point
Remote
summer/winter
enablement
Password
(technical
assistance)
7 ÷20 °C
34 ÷53 °C
8°C (470÷4160)
9.5°C(230÷260)
44°C (470÷4160)
42.5°C(230÷260)
I.3.7 SETTING THE SUMMER, WINTER AND
ANTIFREEZE SET POINTS
To change these parameters it is necessary to access the 4 levels
represented in the diagram (Fig.3); to do this, you need to follow two
basic rules:
• press the MODE-UP and ON/OFF, RESET-DOWN keys
simultaneously to move down through the levels (from 0 to 4);
• press the MODE-UP and ON/OFF, RESET-DOWN keys
simultaneously for 2 seconds to move up through the levels (from
4 to 0).
It may sometimes be necessary for the user to modify one of the
parameters to suit specific operating requirements. The following
example explains how to modify the HEA parameter (heating set point).
Proceed as follows:
○ Press the MODE-UP and ON/OFF, RESET-DOWN keys
simultaneously.
• The compressor, defrosting and plate exchanger heating element
status LEDs flash.
• The SET label is displayed.
• Use the UP/DOWN keys to select the label to be modified (in this
case SET).
○ Press MODE-UP and ON/OFF, RESET-DOWN simultaneously.
• The Coo label is displayed.
• Use the UP/DOWN keys to select the sub-label to be modified (in
this case HEA).
○ Press MODE-UP and ON/OFF, RESET-DOWN simultaneously.
• The value of sub-label HEA is displayed.
◊ Act on the UP/DOWN keys to change the value of the HEA
parameter (within the preset limits).
○ After setting the desired value press MODE-UP and ON/OFF,
RESET-DOWN simultaneously three times for 2 seconds.
• All the other available parameters may be modified using the same
procedure.
IMPORTANT!
Changing or adjusting machine function
parameters must be carried out with the utmost
care to avoid creating conflict with other parameter
settings.
For example, if you set the Coo parameter at 0°C, it is necessary to
also change the antifreeze set point (which can only be changed by
authorised personnel in possession of the protection password):
• A11 (antifreeze alarm setting) in order to prevent machine shutdown
triggered by the antifreeze protection, displayed by alarm E05.
Whenever the A11 parameter is assigned a value below 3°C it is
essential to use water mixed with a suitable percentage of ethylene
glycol.
0
6

SECTION I: USER
I.3.8
STATUS INDICATOR LEDS
○ COMPRESSOR LED
• Off: the compressor is not running.
• On: the compressor is running.
• Flashing fast: delay timer activated.
• Flashing slowly: defrosting.
○ PLATE EXCHANGER HEATING ELEMENT LED
• Off: the heating element is not activated.
• On: the heating element is activated.
I.3.9 ALARM SIGNALS
The control board displays alarms as indicated in the “TYPE OF
ALARM”. Any alarms can be reset by acting on the RESET key on the
keyboard, after the cause of the alarm has been identified and
eliminated.
I.3.9.1 Type of alarm
ALARM ALARM DESCRIPTION RESET
E01 High pressure alarm 1 MANUAL
E02 Low pressure alarm 1 MANUAL
E03 Compressor 1 thermal overload alarm MANUAL
E04 Fan thermal overload alarm MANUAL
E05 Antifreeze protection alarm MANUAL
E06 ST2 sensor malfunction alarm AUTOMATIC
E07 ST3 sensor malfunction alarm AUTOMATIC
E13 Compressor 2 thermal overload alarm MANUAL
E21 High pressure alarm 2 MANUAL
E22 Low pressure alarm 2 MANUAL
E23 Compressor 3 thermal overload alarm MANUAL
E27 ST6 sensor malfunction alarm AUTOMATIC
E33 Compressor 4 thermal overload alarm MANUAL
E40 ST1 sensor malfunction alarm AUTOMATIC
E41 Water differential pressure switch alarm MANUAL
level 0 (display) level 1 (labels) level 2 (sub labels) level 3 level 4
Set point: SET
Cooling set point: Coo
Heating set point: HER
Cooling set point value
Heating set point value
Display of sensor
temperature or
active alarm
sensor value:TP Sensors: T01÷T06 Sensor value
alarms: Err
Active alarms: Exx
parameters: Par Configuration par.: CnF Parameters: H49 Parameter value
Password: PSS
Password value
I.4 TYPE AND FREQUENCY OF SCHEDULED
MAINTENANCE
DANGER!
All maintenance operations must be carried out by
skilled personnel, qualified to work on air
conditioning and cooling products.
To guarantee the unit runs regularly and efficiently, it is necessary to
schedule an overall inspection at regular intervals to prevent
malfunctions which could damage the main machine components
(see SECTION II: INSTALLATION AND MAINTENANCE).
I.4.1 MAINTENANCE WORK
While the unit is running
Every 6
months
End of season
Check the gas charge and check for
any humidity in the circuit (while the
X
unit is running at full power).
Check there are no gas leaks.
X
Make sure the maximum and
minimum pressure switches are
X
running. (*)
Bleed any air from the chilled water
system.
X
Check the power input to the unit.
X
Check the differential water pressure
switch.
X
Check the exchanger water side for
any scale.
X
I.4.1.1
Shutdown
When a long shutdown period is scheduled, the unit must be
disconnected from the power supply by opening the disconnecting
switch on the power supply circuit.
IMPORTANT!
If the unit is not used during the winter months the
water in the system may freeze.
All the water contained in the circuit must be emptied before the onset
of winter. During installation, consider mixing the water in the circuit with
the correct proportion of ethylene glycol (antifreeze) to guarantee
protection against freezing (see SECTION II: INSTALLATION AND
MAINTENANCE).
I.4.1.2 Daily shutdown
Daily shutdown can be controlled by acting on the ON/OFF, RESET-
DOWN key or, if available, from a remote control position. This ensures
the power supply to the plate exchanger heating element.
I.4.1.3 Start up after prolonged shutdown
Before starting up the unit again:
• check that the heat exchanger is in good condition, well ventilated
and clean air side;
• bleed any air from the water system;
• make sure the required amount of water circulates inside the
exchanger.
(*) This job may only be carried out by skilled personnel from service
centres authorised by Rhoss, qualified to work on this type of product.
When the unit is switched off
Check the contactors on the control
board.
Inspect and check that electrical
contacts and terminals are fastened
securely.
Make sure the condensing coils are
clean.
Empty the water system (if
necessary).
Every 6
months
X
X
X
End of season
X
X
7

SECTION II: INSTALLATION AND MAINTENANCE
II
SECTION II: INSTALLATION AND
MAINTENANCE
IMPORTANT!
The unit will only function correctly if the
instructions for use are scrupulously followed, if
the clearances are complied with during installation
and if the operating restrictions indicated in
Paragraph II.1.2 are strictly adhered to.
II.1.1 MACHINE DESCRIPTION
II.1.1.1 Construction features
○ Chassis made of aluminium profiles with Peraluman panelling,
models 230 ÷ 260 are insulated on the inside with sound insulation
material; models 470 ÷ 4160 feature a steel base.
○ Scroll hermetic rotary compressors complete with thermal overload
protection.
○ Limiting as indicated in the following table:
MODEL Compressors/N° of steps N° of circuits
230 ÷ 260 2/2 1
470 ÷ 4160 4/4 2
○ Evaporator or condenser/evaporator featuring stainless steel plates
complete with antifreeze heating element and closed cell foamed
polyurethane rubber insulation.
○ Differential pressure switch to protect the unit from any interruptions
in the flow of water.
○ Male threaded water connections on all models.
○ Air condenser or evaporator/condenser featuring copper coils and
aluminium fins.
○ Axial flow fans complete with protective grilles.
○ Phase controller to protect the compressor.
○ Cooling circuit featuring mild copper piping welded with precious
alloys. Supplied complete with: dehydrator filter, charge connections,
high pressure switch with manual reset, low pressure switch with
automatic reset, liquid-moisture sight-glass, thermostatic expansion
valve, pressure transducer (on THAE-THAES), cycle inversion valve
(on THAE-THAES), non return valve (on THAE-THAES) and a liquid
receiver (on THAE-THAES).
○ Unit complete with:
• R 407c refrigerant charge.
II.1.1.2 Control board features
○ The control board can be accessed from a front panel in
compliance with IEC standards.
Waterproof box supplied with special key and complete with:
• electrical wiring for the 400V-3ph+N-50Hz power supply;
• power supply to auxiliaries: 230V-1ph-50Hz;
• control power supply: 12V-1ph-50Hz;
• power contactors;
• remote appliance controls;
• general isolator with door interlock on the power supply;
• automatic overload cut-out on each compressor and fan;
• automatic overload cut-out on the auxiliary circuit.
○ Programmable microprocessor electronic circuit board managed
from the keyboard on the appliance.
The electronic circuit board manages the following functions:
• adjustment and management of inlet/outlet water temperature
settings; safety delays; hour meters for each compressor; automatic
inversion of compressor start up sequences, defrosting cycles, (on
THAE-THAES); circulation or service pump; electronic antifreeze
protection; the functions controlling the working intervention modes of
each device constituting the appliance.
• complete protection of the unit, including the possibility of switching
off the machine and the display of all triggered alarms;
• display of the programmed set points, the inlet/outlet water
temperature and alarms. LED display of working devices, cooling or
heat pump mode function or defrosting in progress (on THAE-THAES);
• self-diagnosis with continuous verification of unit working
conditions.
○ Advanced functions:
• pre-arrangement for serial connection with RS 485 output for
interconnection with building automation systems, centralised systems
and supervision networks.
• computer assisted machine tests.
II.1.2
WORKING RESTRICTIONS
For a description of working restrictions, refer to the relative chapters in
SECTION I: USER (Chapters I.1.3.1 and I.1.3.2).
II.1.3 FACTORY FITTED ACCESSORIES
STANDARD VERSION:
DS15 – Desuperheater.
RC50 – Partial heat regenerator.
RC100 – Total heat regenerator.
FI10 – Proportional electronic device for continuous adjustment of fan
rotation speed depending on the condensation pressure, up to an
external air temperature of -10°C in cooling function mode.
TRD - Thermostat with display showing the regenerator or
desuperheater outlet water temperature with the possibility of
programming the activation set point of an external adjustment device.
Documentation regarding factory fitted accessories is enclosed with the
documentation of the accessorised units.
VERSION WITH INTEGRATED PUMP ASSEMBLY
DS15 (*) - Desuperheater.
RC50 (*) - Partial heat regenerator.
RC100 (*) - Total heat regenerator.
FI10 - Proportional electronic device for continuous adjustment of fan
rotation speed depending on the condensation pressure, up to an
external air temperature of -10°C in cooling function mode.
TRD (*) - Thermostat with display showing the regenerator or
desuperheater outlet water temperature with the possibility of
programming the activation set point of an external adjustment device.
Documentation regarding factory fitted accessories is enclosed with the
documentation of the accessorised units.
(*) units 230÷260 only.
VERSION WITH MOTOR-DRIVEN PUMP
DS15 – Desuperheater.
RC50 – Partial heat regenerator.
RC100 – Total heat regenerator.
FI10 – Proportional electronic device for continuous adjustment of fan
rotation speed depending on the condensation pressure, up to an
external air temperature of -10°C in cooling function mode.
TRD - Thermostat with display showing the regenerator or
desuperheater outlet water temperature with the possibility of
programming the activation set point of an external adjustment device.
Documentation regarding factory fitted accessories is enclosed with the
documentation of the accessorised units.
II.1.4 ACCESSORIES SUPPLIED SEPARATELY
IMPORTANT!
Only use original spare parts and accessories.
RHOSS S.p.a. shall not be held liable for damage
caused by tampering or work carried out by
unauthorised personnel or malfunctions caused by
the use of non-original spare parts or accessories.
KSA - Vibration-damping rubber supports.
KTR – Remote control keyboard with exactly the same functions as the
keyboard on the appliance.
KIS - RS 485 serial interface for interconnection with building
automation systems, centralised systems and supervision networks.
KRP – Protective mesh.
KGM – High and low pressure gauges for every circuit complete with
capillaries.
KCH - RS 232 hardware key for connection to supervision systems, to
be combined with one or more KIS serial interface modules if the units
are managed on a centralised basis.
Documentation regarding accessories supplied separately is enclosed
with the documentation of the accessorised units.
8

SECTION II: INSTALLATION AND MAINTENANCE
II.1.5
II.1.6
WARNING ABOUT POTENTIALLY TOXIC
SUBSTANCES
DANGER!
Read with care the information about potentially
toxic substances described in point I.1.4.
NOISE EMISSIONS
IMPORTANT!
The data indicated in the table below is based on
measurements carried out in compliance with ISO
3476.
Cooling cycle
• condenser inlet air temperature: 32°C B.S.;
• chilled water temperature: 7°C;
• temperature differential at the evaporator: 5°C.
Heating cycle
• evaporator inlet air temperature: 6°C B.U.;
• hot water temperature: 50°C;
• temperature differential at the condenser: 5°C.
○ The sound pressure level in dB (A) refers to measurements made in
the open, 1 m away from the unit.
TCAE – THAE Models 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Sound pressure level dB(A)

SECTION II: INSTALLATION AND MAINTENANCE
II.1.11
STORAGE CONDITIONS
The units are wrapped in a shrink-wrap nylon sheath which guarantees
protection when the unit is stored in sheltered areas where it is not
exposed to frequent changes in temperature. If the appliance has to be
stored outdoors, remove the shrink-wrap nylon sheath to avoid the
formation of condensate. If the unit is exposed to sunlight, peel off the
protective film on the panelling.
II.2 INSTALLING THE UNIT
DANGER!
Installation may only be carried out by skilled
technicians, qualified to work with conditioning and
cooling products.
Installation personnel must comply with all
applicable local or national legislation in effect
when the appliance is commissioned.
DANGER
The corners of the unit and the finned surface of the
banks may cause injury if the due care and
attention is not paid during installation.
II.2.1 CLEARANCES
IMPORTANT!
The unit must be positioned in compliance with the
minimum recommended clearances and bearing in
mind access to water and electrical connections.
Failure to observe the recommended clearances during installation will
prevent the unit from running efficiently, causing an increase in the
power input and a considerable drop in the cooling power due to an
increase in condensing pressure.
The area above the unit must be free of any obstacles. If the unit is
completely surrounded by walls, the indicated distances still apply as
long as two adjacent walls are no higher than the unit itself. If more than
one unit is installed, a 2 m minimum distance must be provided
between the finned coils to avoid interference with the
condensing/ventilating modules of each machine. Clearances greater
than the clearances indicated in Fig. 5 and Fig. 6 must be taken into
account to allow for handling any components that may require
replacement.
Fig. 6
MODEL 470 490 4100 4110 4130 4140 4160
Clearances
L1 mm 1.200 1.200 1.200 1.200 1.200 1.200 1.200
L2 mm 1.400 1.400 1.400 1.600 1.600 1.600 1.600
L3 mm 800 800 800 800 800 800 800
II.2.2
WEIGHT DISTRIBUTION
IMPORTANT!
Correct installation and positioning includes
levelling the appliance on a surface capable of
bearing its weight.
The unit may be installed at ground level or on the top of buildings.
If the unit is installed on structures that may not be subjected to the
effects of mechanical vibrations, the appliance must be insulated from
the rigid support surface.
Alternatively, the danger of transmitting vibrations through the support
surface can be eliminated by installing vibration-damping rubber
supports into the points provided under the frame of the unit. The
vibration-damping rubber supports are supplied as accessories (KSA:
vibration-damping supports).
The weight of each unit is indicated in the tables in enclosed documents
1, 2, and 3.
IMPORTANT!
If the problem of structural vibration transmission
proves difficult to solve, consult a qualified
technician for a complete analysis.
II.2.3
II.2.3.1
WATER CONNECTIONS
Connection to the system
IMPORTANT!
The water system and connection between the unit
and the system must be carried out in compliance
with the local and national regulations in effect.
Fig. 5
MODEL 230 235 245 250 260
Clearances
L1 mm 1.000 1.000 1.000 1.000 1.000
L2 mm 800 800 800 800 800
L3 mm 800 800 800 800 800
The units feature 2”G male threaded water connections.
Air vents and on-off valves must be installed on the inlet and outlet
pipes of the unit to isolate the appliance from the rest of the system.
This not only allows the heat exchanger to be emptied but also leaves
enough space for any maintenance work or the removal of the heat
exchanger. A filter must be assembled on the system return pipe and
vibration-damping joints must be installed on the water connections.
When all the connections have been carried out, make sure that none
of the pipes have any leaks and bleed any air from the circuit.
II.2.3.2 Installation and management of the P/P –DP
circulation pump on the primary circuit
The circulation pump installed on the chilled water circuit must be able
to overcome, at the rated flow rate, the flow resistance of the entire
system and the exchanger on the appliance.
• The differential pressure switch protects the unit from any
interruptions in the flow of water. The differential pressure switch is
automatically rearmed; the unit automatically starts up again only when
the water flow rate exceeds the calibrated differential set point.
• Once the differential pressure switch has been triggered, the control
panel continues to display the E41 alarm to indicate possible water
system problems (Par. II.3.6).
10

SECTION II: INSTALLATION AND MAINTENANCE
• The service pump must be subordinate to the appliance; the
microprocessor controller controls and manages the pump according to
the following logic:
When the machine is switched on, the pump is the first device to start
up; the pump has priority over the rest of the system. During the start up
phase, the differential pressure switch for the minimum water flow rate
is ignored for a pre-set time, to avoid oscillations caused by air bubbles
or turbulence in the water circuit. When this pre-set delay time expires,
definitive machine start-up is enabled and the fans are activated 60
seconds after the pump has switched on (during this stage the
antifreeze alarm is bypassed). After another 60 second safety delay
time, the compressors start up. The pump runs in strict unison with the
appliance and is only cut-out when the unit is switched off.
When the machine is switched off, the pump continues to function for a
pre-set time before coming to a definite stop to eliminate any residual
heat in the water evaporator.
Information regarding pump water connections is outlined in enclosed
document 4, which also includes the hook-up diagrams for each
machine version.
If a double stand-by pump (P-P/DP) is present, the second pump is
connected in parallel to the first pump and can be activated if the
working pump malfunctions or breaks-down by acting on a
selector on the control board.
II.2.3.3 Frost protection
II.2.3.3.1
When the unit is switched off or during seasonal breaks
IMPORTANT!
If the unit is not used during the winter months, the
water in the system may freeze and therefore
seriously damage the appliance.
The entire contents of the circuit should be emptied before the onset of
winter. Use a discharge point below the water exchanger to assure all
the water is drained from the unit. Act on the cocks on the bottom part
of the exchangers to make sure the exchangers are completely empty.
If it is not possible to discharge the water from the system, ethylene
glycol may be added to the water. If proportioned correctly, ethylene
glycol prevents the water from freezing.
II.2.3.3.2 While the unit is running
In this case the microprocessor control prevents the exchanger from
freezing. When the set temperature is reached the antifreeze alarm
triggers and stops the appliance, while the circulation pump continues
to run normally.
The use of ethylene glycol is only recommended when it is not possible
to discharge the water from the circuit during the winter break or if the
unit has to produce chilled water at temperatures below 4°C (the latter
case is not covered herein and depends on the system sizing of the
unit).
IMPORTANT!
Mixing the water with glycol modifies the
performance of the unit.
The following table indicates the multiplication factors needed to
determine the variations in performance of the units according to the
required percentage of ethylene glycol. The multiplication factors refer
to the following conditions: condenser inlet air temperature: 32°C;
chilled water temperature: 7°C; temperature differential at the
evaporator: 5°C; (the same multiplication factors may be used for
different working conditions because their degree of variation is
negligible).
Table TCAE-TCAES-THAE-THAES 230÷4160
Min.
outdoor air 2 0 -3 -6 -10 -15 -20
temperature °C
% of glycol in
weight
10 15 20 25 30 35 40
Freezing
temperature in -5 -7 -10 -13 -16 -20 -25
°C
fc G 1,008 1,028 1,051 1,074 1,100 1,126 1,153
fc ∆pw 1,053 1,105 1,184 1,237 1,316 1,421 1,500
fc QF 0,991 0,987 0,982 0,978 0,974 0,969 0,960
fc P 0,996 0,995 0,993 0,991 0,989 0,987 0,984
Key to table:
fc G
= Evaporator glycol water flow rate correction factor
(condenser/evaporator on THAE-THAES).
fc ∆pw= Evaporator flow resistance correction factor
(condenser/evaporator on THAE-THAES).
fc QF = Cooling capacity correction factor.
fc P = Total power input correction factor.
II.2.3.4 System water content
Systems supplied by water chillers usually have limited water
volumes/capacities. In these working conditions (particularly with
reduced heat loads), the compressor would be forced to start and stop
at too frequent intervals. The microprocessor board protects the electric
motor on the compressor by delaying the next compressor start-up by
360 seconds once it has stopped. This undermines the efficiency of the
system connected to the unit because the chilled water may be
subjected to excessive temperature variations. We recommend
installing an inertial water storage tank which will, when necessary,
increase the amount of water in the circuit thus drastically limiting the
effect of the water temperature variations. The volume of the storage
tank depends on the type of system, the capacity of the cooling
assembly, the temperature differential of each capacity control step in
the working thermostat. On the basis of the desired inertial effect on the
water temperature, the total quantity of water Q (I), (system + storage),
may be calculated as follows:
P (kW)
∆T (°C)
t (sec.)
Q(l) = 860⋅
P t 1
⋅ ⋅
∆T
n 3600
= Project cooling capacity.
= Working thermostat differential (2 ÷ 6°C).
= Compressor stop time (the delay time is managed by the
microprocessor; to determine the minimum water quantity to
limit the temperature variations when in use, set t=100 sec., +
60 sec. for every minute of delay required).
n (n°) = Number of capacity control steps.
The storage tank should be downstream of the cooling circuit and
upstream of the cooling. This means that the water temperature in the
terminal units is reached as soon as the compressor starts working.
While the compressor is running the water temperature may fall slightly
below the project value.
II.2.4 ELECTRICAL CONNECTIONS
DANGER!
Electrical connection must be carried out by
qualified personnel in compliance with the
regulations in effect in the country where the unit is
installed. RHOSS shall not be held liable for
damage to persons or things caused by incorrect
electrical connection.
IMPORTANT!
When carrying out electrical connections, refer to
the wiring diagrams enclosed with the unit which
highlight the terminals which need to be set up by
the installer.
The control board on the units is equipped with a general isolator with
door interlock.
• Connections must be carried out in compliance with the local and
national regulations in effect and the wiring diagrams supplied with the
appliance.
• By law the unit must be earthed. Earth connection must be carried
out during installation using the terminal marked with the “PE” earth
sign.
• Always install a general isolator in a protected area near the
appliance with a delayed characteristic curve of a suitable capacity and
breaking capacity. Make sure the general isolator includes a 3mm
minimum distance between contact apertures.
• Power supply must be provided by a three phase line using a threepole
+ neutral cable suitably sized in relation to the power input of the
appliance.
The power supply cables must be routed through the external raceway
indicated in Enclosed Documents 1, 2, 3.
• The units are supplied with the remote on-off parameter enabled.
11

SECTION II: INSTALLATION AND MAINTENANCE
Electrical connection of a motor-driven
pump/secondary circulation pump (VERSION PU-
PU/DP)
DANGER!
Electrical connection must be carried out by
qualified personnel in compliance with the
regulations in effect in the country where the unit is
installed. RHOSS shall not be held liable for
damage to persons or things caused by incorrect
electrical connection.
IMPORTANT!
Refer to the wiring diagrams enclosed with the unit
which highlight the terminals to be set up by the
installer.
If one of the pumps stops running, act on the
backup pump selector on the control board to
enable the backup pump.
II.2.5 REMOTE MANAGEMENT USING
CONNECTIONS SET UP BY THE INSTALLER
DANGER!
Electrical connection must be carried out by
qualified personnel in compliance with the
regulations in effect in the country where the unit is
installed. RHOSS shall not be held liable for
damage to persons or things caused by incorrect
electrical connection.
IMPORTANT!
Refer to the wiring diagrams enclosed with the unit
which highlight the terminals to be set up by the
installer.
SCR - Remote control selector.
SEI – Remote summer-winter selector (THAE-THAES only)
LF – Compressor function lamp.
LB – General malfunction lamp.
• Remote ON/OFF enablement (SCR)
Remove the jumper between the terminals (35 and 36 on models
TCAE-TCAES-THAE-THAES 470÷4160, 21 and 22 on models TCAE-
TCAES-THAE-THAES 230÷260) on the user interface terminal board
and connect the remote control ON/OFF selector cables.
CAUTION
Open contact: the unit is OFF.
Closed contact: the unit is ON.
IMPORTANT!
When the unit is switched OFF using the remote
control, E00 is displayed.
II.2.6 NOISE REDUCTION
IMPORTANT!
The unit is designed for outdoor installation;
therefore local and national standards in force
regulating noise levels must be complied with.
Incorrect positioning or installation may cause an
amplification of the noise or vibrations produced
while the unit is running.
○ During installation it is IMPORTANT to bear in mind the following:
• non-soundproofed reflecting walls near the unit (such as balcony
walls or the perimeter walls of a building), may increase the total sound
pressure level reading near the appliance by as much as 3 dB(A) for
every surface (e.g. 2 corner walls cause an increase of 6 dB(A);
• install suitable vibration-damping supports under the unit to avoid
transmitting vibrations to the building structure;
• rigid frames may be installed on the top floor of the building to
support the unit and transmit its weight to the load bearing structures of
the building;
• carry out all water connections using elastic joints. Pipes must be
firmly supported by solid structures. If the pipes are routed through
walls or panels, insulate with elastic sleeves.
○ If there are any structural vibrations in the building (after the unit
has been installed and has started to run) which provoke such strong
resonance that noise is generated in other points of the building, consult
a qualified acoustic technician for a complete analysis of the problem.
II.3 OPERATION AND ADJUSTMENT
II.3.1 CONTROL BOARD
The control board features a general isolator with door interlock. The
230 V auxiliary circuit power supply and the 12 V control power supply
is shunted internally by the three phase power supply. The layout of
electrical components in the control board is illustrated in Fig. 7 and Fig.
8.
CE1 = microprocessor controller
IA = auxiliary switch
IC = compressor switch
IG = main switch
IV = fan switch
KC = compressor contactor
KV = fan contactor
TR = transformer
IP = accumulation pump switch
KP = accumulation pump contactor
MF = phase monitor
Control board layout on TCAE-TCAES-THAE-THAES 230÷260 units
• Remote Summer/ Winter enablement on THAE-THAES (SEI)
Change parameter H49 (from 0 to 1) and connect the remote
Summer/Winter selector cables between the terminals (33 and 34 on
models THAE-THAES 470÷4160, 19 and 20 on models THAE-THAES
230÷260) on the user interface terminal board.
CAUTION
Open contact: heating cycle.
Closed contact: cooling cycle.
IMPORTANT!
When the unit is switched OFF using the remote
control, E00 is displayed.
• LF-LB lamp remote control
To remote control the two signals, connect the two lamps according to
the instructions provided in the wiring diagram supplied with the
machine.
Fig. 7
12

SECTION II: INSTALLATION AND MAINTENANCE
Control board layout on TCAE-TCAES-THAE-THAES 470÷4160
units
Fig. 8
• Main switch
Manually controlled disconnecting power switch. Provided with auxiliary
contacts which break the auxiliary circuit before opening the main
switch contacts (in compliance with standard CEI EN 60204-1).
• Compressor and fan switch
Manually reset disconnecting device providing protection again
overcurrents and short circuits.
• Compressor and fan power contactor
Electromechanical device controlled by the microprocessor board.
• 230/12 V transformer
Supplies the low voltage control power supply.
• Automatic overload cut-out on the auxiliary circuit
Manually reset electromechanical disconnecting device with overcurrent
and short-circuit current protection.
• Terminal board interfaced with main components outside the
control board
Features clean contacts which can be wired by the user to remote
control appliance switch on/off control, function mode selection, the
shutdown signal and service pump control.
II.3.2 GENERAL FEATURES OF THE
MICROPROCESSOR CONTROL SYSTEM
II.3.2.1 Microprocessor control board
The electronic control essentially consists in two parts:
• A base unit called an INPUT/OUTPUT BOARD.
• A control unit called a USER INTERFACE PANEL.
• The system can be illustrated as follows:
User interface panel
Remote interface
panel KTR printer
option
Flat cable
Flat cable
Card
I/O
Base
Board
I/O 2
Expansion
RS 485 Card
Fig. 9
II.3.2.2 Input/output board
○ The input/output board is essentially made up of the following:
• a section which includes the microprocessor and the memories that
manage the appliance control algorithm;
• a section for interfacing with the supervision network and the
interface panel;
• a section dedicated to the inputs/outputs which allow interfacing
with devices controlled through a terminal board featuring removable
connectors.
○ On TCAE-TCAES-THAE-THAES 230 ÷ 260
• The digital inputs control:
ID1 Water differential pressure switch
ID2 Remote on/off
ID3 Remote summer/winter (on heat pumps)
ID4 Compressor 1 thermal overload
ID5 Compressor 2 thermal overload
ID6 Circuit 1 low pressure switch
ID7 –
ID8 Fan thermal overload
ID9 –
ID10 Circuit 1 high pressure switch
ID11 –
• The digital outputs control:
R1 Compressor 1 contactor
R2 Compressor 2 contactor
R3 Circuit 1 cycle inversion valve
(on heat pumps)
R4 –
R5 Antifreeze heating element
R6 Fan contactor
R7 Pump control
• The analogue inputs control:
ST1 Evaporator inlet water sensor
(working sensor)
ST2 Evaporator outlet water sensor
(antifreeze sensor)
ST3 Circuit 1 pressure transducer
(defrosting sensor)
• The analogue outputs control:
TK1 Fan control proportional output
(0-10 Vdc)
○ On TCAE-TCAES-THAE-THAES 470 ÷ 4160
• The digital inputs control:
Base board
ID1 Water differential pressure switch
ID2 Remote on/off
ID3 Remote summer/winter (on heat pumps)
ID4 Compressor 1 thermal overload
ID5 Compressor 2 thermal overload
ID6 Circuit 1 low pressure switch
ID7 Circuit 2 low pressure switch
ID8 Fan thermal overload
ID9 –
ID10 Circuit 1 high pressure switch
ID11 Circuit 2 high pressure switch
Expansion board
ID3E Compressor 3 thermal overload
ID4E Compressor 4 thermal overload
• The digital outputs control:
Base board
R1 Compressor 1 contactor
R2 Compressor 2 contactor
R3 Circuit 1 cycle inversion valve
(on heat pumps)
R4 Circuit 2 cycle inversion valve
(on heat pumps)
R5 Antifreeze heating element
R6 Fan contactor
R7 Pump control
Expansion board
R1E Compressor 3 contactor
R2E Compressor 4 contactor
• The analogue inputs control:
ST1 Evaporator inlet water sensor (working sensor)
ST2 Evaporator outlet water sensor (antifreeze sensor)
ST3 Circuit pressure transducer 1
(defrosting sensor)
ST6 Circuit pressure transducer 2
(defrosting sensor)
• The analogue outputs control:
TK1 Fan control proportional output
(0-10 Vdc)
13

II.3.2.3
User interface panel
SECTION II: INSTALLATION AND MAINTENANCE
TCAE-TCAES 470÷4160 cooling adjustment
set
Fig. 10
1 = DISPLAY:
displays the value of each parameter (e.g. outlet water temperature,
etc.), triggered alarm codes and the status of all machine resources.
2 = ON/OFF, RESET - DOWN:
act on this key to switch on, off and reset any alarms triggered on the
unit. It also allows you to scroll down the parameter values.
3 = MODE - UP:
act on this key to select the function mode of the unit (stand-by,
summer or winter cycle). It also allows you to scroll up the parameter
values.
4 = summer LED:
indicates that the unit is running in the cooling cycle.
5 = winter LED:
indicates that the unit is running in the heating cycle.
6 = compressor and defrosting LED:
indicates that the compressors are running or that the compressors are
subjected to a time delay (the LED flashes fast). On THAE-THAES
versions running in the winter cycle, it indicates that the unit is
defrosting (the LED flashes slowly).
7 = evaporator heating element LED:
indicates that the heating element is activated.
8 = power supply LED:
indicates that the unit is connected to the power supply.
N.B.:
The user may access the parameters regarding the unit working set
points. Thanks to a password, technical service personnel may access
the unit management parameters (authorised personnel only).
II.3.2.4 Setup and adjustment instructions
The unit is adjusted according to the condenser/evaporator inlet water
temperature. The temperature is controlled by proportional side band
adjustment. Once the set point and the water temperature control
differential have been selected, the controller manages the available
compressors in order to meet the thermal load required by the user.
TCAE-TCAES 230÷260 cooling adjustment
THAE-THAES 230÷260 heating adjustment
THAE-THAES 470÷4160 heating adjustment
By acting on the switches and the keyboards the installer may carry out
the following operations:
• supply power to the unit;
• start up;
• change/select the function mode;
• set the summer set point;
• display any alarms;
• display the status of the main machine components;
• stop the unit;
• disconnect the unit from the mains power supply.
Any other operation must be carried out by qualified personnel
authorised by RHOSS.
II.3.2.5 Power supply to the unit
Act on the main switch by turning the yellow handle clockwise by 90°.
• The “power supply” LED lights up.
II.3.2.6 Disconnection from the mains power supply
Act on the main switch by turning the yellow handle anticlockwise by
90°.
• The “power supply” LED switches off indicating that the unit is no
longer connected to the mains power supply.
II.3.2.7 Start up
Press ON/OFF, RESET-DOWN for 2 seconds.
• The LED relative to the function mode active when the appliance
was last switched off lights up and the display shows the inlet water
temperature.
• The compressor time delay LED starts to flash.
• After a certain time delay the LED remains lit indicating that the
compressor has started to run.
14

SECTION II: INSTALLATION AND MAINTENANCE
II.3.2.8
Stand-by
Press MODE once or twice according to whether the function mode is
winter or summer.
• The LEDs indicating the summer and winter modes switch off.
• The water inlet temperature continues to be displayed.
II.3.2.9 Changing the function mode (THAE-THAES
only)
Press MODE.
• The LED relative to the active function mode switches off and the
LED relative tot eh selected function mode lights up.
• The compressor time delay LED begins to flash.
• After the time delay has elapsed the LED remains lit indicating that
the compressor has started to run.
II.3.2.10 Stopping the unit
Press ON/OFF, RESET-DOWN for 2 seconds.
• The compressor and active function mode LEDs switch off.
• The “power supply” LED remains lit indicating that the unit is
connected to the power supply.
II.3.2.11 Adjustment variables which can be edited
from the keyboard
Parameter function Adjustment limit Set value
Coo Cooling set point 7 ÷20 °C
HEA Heating set point 34 ÷53 °C
H49
PSS
Remote
summer/winter
enablement
Password
(technical service)
8°C (470÷4160)
9.5°C(230÷260)
44°C (470÷4160)
42.5°C(230÷260)
0
Summer and winter set points
To modify the parameters it is necessary to access the 4 levels
represented in the diagram below. To do this, proceed as follows:
• press the MODE-UP and ON/OFF, RESET-DOWN keys
simultaneously to move down through the levels (from 0 to 4);
• press the MODE-UP and ON/OFF, RESET-DOWN keys
simultaneously for 2 seconds to move up through the levels (from
4 to 0).
It may be necessary for the installer to modify one of the parameters to
suit specific operating requirements. The following example explains
how to modify the HEA parameter (heating set point). Proceed as
follows:
○ Press the MODE-UP and ON/OFF, RESET-DOWN keys
simultaneously.
• The compressor, defrosting and heating element LEDs flash.
• The SET label is displayed.
• Use the UP/DOWN keys to select the label to be modified (in this
case SET).
○ Press MODE-UP and ON/OFF, RESET-DOWN simultaneously.
• The Coo label is displayed.
• Use the UP/DOWN keys to select the sub-label to be modified (in
this case HEA).
○ Press MODE-UP and ON/OFF, RESET-DOWN simultaneously.
• The value of sub-label HEA is displayed.
• Act on the UP/DOWN keys to change the value of the HEA
parameter (within the preset limits).
• After setting the desired value press MODE-UP and ON/OFF,
RESET-DOWN simultaneously three times for 2 seconds.
All the other available parameters may be modified using
the same procedure.
IMPORTANT!
Changing or adjusting machine function
parameters must be carried out with the utmost
care so as to avoid conflict with other parameter
settings.
○ For example, if you set the Coo parameter at 0°C, it is necessary to
also change the antifreeze set point parameter (which can only be
changed by authorised personnel in possession of the protection
password):
• A11 (antifreeze alarm set point).
To prevent machine shutdown caused by the antifreeze protection,
displayed by the EO5 alarm. Whenever the A11 parameter is assigned
a value below 3°C it is essential to use water mixed with a suitable
percentage of ethylene glycol.
level 0 (display) level 1 (labels) level 2 (sub labels) level 3 level 4
display of sensor
temperature or
active alarm
Set point: SET Cooling set point: Coo Cooling set point value
Heating set point: HER
Heating set point value
sensor value:TP Sensors: T01÷T06 Sensor value
alarms: Err
Active alarms: Exx
digital imput: Id Parameters: i01÷i11 digital imput status
parameters: Par Configuration par.: CnF Parameters: H49 Parameter value
Compressor par.: CP Parameters: C03 e C04 Parameter value
Fan parameter: Fan Parameters: F25 Parameter value
Alarm parameter: ALL Par.: A04, A06, A11 Parameter value
Pump parameter: PUP
Antifreeze parameter: Fro Parameters: r02÷r17 Parameter value
Defrosting parameter:dFr Parameters: d02÷d09 Parameter value
Expansion Board parameter
Parameters: n01÷n07
Password: PSS
Working hours:
OHR
Password value
Comp. work. hours: OH1÷OH4
Pump working hours: OHP
Number of hours
Number of hours
15

SECTION II: INSTALLATION AND MAINTENANCE
II.3.3
STATUS INDICATOR LEDS
○ COMPRESSOR STATUS LED
• Off: the compressor is not running.
• On: the compressor is running.
• Flashing fast: delay timer operation.
• Flashing slowly: defrosting.
○ EVAPORATOR HEATING ELEMENT LED
• Off: the heating element is disabled.
• On: the heating element is activated.
II.3.4 STARTING AND STOPPING THE MACHINE
START UP AFTER LONG PERIODS OF
INACTIVITY
IMPORTANT!
Machine commissioning or the first start up must
be carried out by skilled personnel authorised by
RHOSS, and anyway qualified to work on this type
of product.
○ Always act on the main disconnecting switch to disconnect the unit
from the mains power supply before carrying out any maintenance work
or inspections on the appliance.
○ Check the following before starting up the unit:
The electricity power supply must comply with the specifications on the
data plate and/or the wiring diagram (L1-L2-L3 + NEUTRAL threephase
power supply) and it must fall within the following limits:
• Power supply frequency variation: ±2 Hz.
• Power supply voltage variation: ±10% the rated voltage.
• Imbalance between the power supply phases: < 2%.
Electrical connections must be carried out in compliance with the
regulations in effect in the place of installation and with the indications
on the wiring diagram provided with the unit.
The installer is responsible for sizing the power supply cables.
IMPORTANT: before connecting the main L1-L2-L3+N power
supply cables to the terminals on the main disconnecting switch,
make sure they are in the correct sequence.
• Access the control panel and make sure the power supply terminals
and contactors are secured tightly (they may have become loose during
transport, which could lead to malfunctions);
• make sure that the oil level in the compressors reaches at least half
way up the sight glass;
• make sure the delivery and flow lines on the water system are
connected according to the arrows next to the water exchanger inlet
and outlet;
• make sure the condensing coil is well ventilated and clean.
○ On all units, the microprocessor board starts up the compressors 3
minutes after the machine was last stopped.
○ The appliance may now be switched on by acting on the main
ON/OFF switch on the microprocessor control user interface panel,
located on the control board. Any malfunctions are immediately
displayed on the control panel by way of the alarm signals.
II.3.4.1 Daily shutdown
Daily shutdown can be controlled by acting on the ON/OFF key on the
user interface panel or from a user remote ON/OFF control which can
be inserted on the unit by following the indications in the wiring
diagrams.
This ensures the power supply to the compressor sump heating
elements.
II.3.5 CALIBRATING SAFETY AND CONTROL
DEVICES
The units are factory tested, where they are also calibrated and the
default parameter settings are inserted. These guarantee that the
appliances run correctly in rated working conditions (see “SAFETY
COMPONENT CALIBRATION SETTINGS”).
• The circuit sizing of the electronic and electromechanical
components employed are indicated in the wiring diagram enclosed
with the unit.
Safety component calibration settings Enablement
High pressure switch (PA)
Low pressure switch (PB) (TCAE-
TCAES)
Low pressure switch (PB) (THAE-
THAES)
Water differential pressure switch
Electronic board parameters
Summer working temperature setting
Winter working temperature setting (THAE-
THAES)
28,5 bar
2,0 bar
0,7 bar
0,09 bar
Reset
18,5 bar -
MANUAL
3,5 bar –
AUTOMATIC
2,2 bar –
AUTOMATIC
0,11 bar -
AUTOMATIC
Default setting
9.5°C (230÷260)
8°C (470÷4160)
42.5°C (230÷260)
44°C (470÷4160)
Working temperature differential
1.3°C (470÷4160)
2.6°C (230÷260)
Antifreeze temperature set point 3°C
Maximum defrosting time (THAE-THAES)
10 min
Minimum time between two consecutive
defrosting procedures (THAE-THAES)
40 min
Antifreeze temperature differential 8°C
II.3.6 ALARM TABLE
The control board displays the alarms referred to in the “TYPE OF
ALARM TABLE”. Alarms are reset by acting on the RESET key on the
board after the problem has been identified and eliminated.
Alarm Alarm description Reset
E01 High pressure 1 alarm MANUAL
E02 Low pressure 1 alarm MANUAL
E03 Compressor 1 thermal overload MANUAL
E04 Fan thermal overload alarm MANUAL
E05 Antifreeze block alarm MANUAL
E06 ST2 sensor malfunction AUTOMATIC
E07 ST3 sensor malfunction AUTOMATIC
E13 Compressor 2 thermal overload MANUAL
E21 High pressure 2 alarm MANUAL
E22 Low pressure 2 alarm MANUAL
E23 Compressor 3 thermal overload MANUAL
E27 ST6 sensor malfunction AUTOMATIC
E33 Compressor 4 thermal overload MANUAL
E40 ST1 sensor malfunction AUTOMATIC
E41 Water differential pressure switch alarm MANUAL
16

SECTION II: INSTALLATION AND MAINTENANCE
Water differential
pressure switch alarm
High pressure switch
alarm
Low pressure switch
alarm
Compressor thermal
overload alarm
Antifreeze alarm
Inlet water
temperature sensor
(ST1) off limit alarm
Coil temperature
sensor off limit alarm
II.4
TYPE OF ALARM
Absolutely insufficient water flow rate.
Air in the water system.
Gate valves on unit closed.
The circulation pump does not start (if connected).
Water circuit filter blocked.
This alarm is highlighted along with the overload
protectio alarm (they have the same inputs).
Low pressure switch alarm.
Compressor thermal overload alarm.
Protection set point too high.
Insufficient water flow rate.
Insufficient thermal load.
Insufficient water flow rate.
Faulty sensor.
(faulty sensor)
SCHEDULED MAINTENANCE
IMPORTANT!
Maintenance work must be carried out by skilled
technicians, qualified to work on conditioning and
cooling products.
DANGER!
Do not introduce pointed objects through the air
delivery intake grilles.
DANGER!
Always act on the disconnecting switch to
disconnect the unit from the mains power supply
before carrying out any maintenance work, even if
you only intend to make an inspection.
IMPORTANT!
The units TCAE-TCAES-THAE-THAES 230÷260 are
provided with a protection which cuts out the power
supply whenever somebody opens the panel on the
opposite side of the control board.
• To guarantee that the unit runs efficiently and regularly, is it
advisable to systematically check the unit at regular intervals as a
precaution against malfunctions that could damage the main machine
components.
II.4.1 PREVENTIVE MAINTENANCE
Maintenance work while the unit is running
Check gas charge and humidity in the circuit
(unit running at full speed).
Check for gas leaks.
Check high and low pressure switches are
functioning. (*)
Bleed air from chilled water circuit.
Check the exchanger for scale water side.
Every 6
months
X
X
X
X
End of
season
X
RECOMMENDED ACTION
Restore system water content.
Bleed air from the system.
Open the gate valves.
See point 1 – troubleshooting.
Check, clean if necessary.
Reset the high pressure switch. Press down completely the back
button on the device before resetting the alarm on the keyboard. If the
alarm persists, check and identify the cause of the problem and refer
to point 5 – troubleshooting.
The low pressure switch is reset automatically; reset the alarm on the
keyboard. If the alarm persists, check and identify the cause of the
problem and refer to point 4 – troubleshooting.
Contact an authorised technical service centre. They will check the
reason why the overload protection overheats and carry out the
necessary maintenance work.
Check calibration and reset.
Check, adjust if necessary.
Check system sizing, leakage and insulation.
Check, adjust if necessary.
Check, replace if necessary.
Check, replace if necessary.
II.4.2
CHECK-UPS, CLEANING AND
ADJUSTMENT
II.4.2.1.1 Condensing coil: cleaning and inspection
The following operations should be carried out while the unit is switched
off and taking care not to damage the fins:
• remove any foreign bodies from the condensing coils which may
block the passage of air, such as: leaves, paper, debris, etc.;
• use a jet of compressed air to remove any dust deposits;
• gently wash and brush with water;
• dry using a jet of compressed air.
To further safeguard the coils, we recommend assembling the
accessory KRP- Coil Protective Mesh.
II.4.2.2 Water evaporator: inspection and wash-out
Plate exchangers are not subject to fouling in rated running conditions.
The working temperatures of the unit, the speed of the water in the
pipes and the suitable finish of the heat exchanging surface reduce to a
minimum fouling of the exchangers.
Any dirt that may form in the water circuit or any sand that cannot be
trapped by the, as well as extremely hard water conditions or the
concentration of any antifreeze solution, may dirt the exchangers and
undermine their heat exchanging efficiency. In this case it is necessary
to wash the exchangers with suitable chemical detergents. If necessary
provide already existing circuits with adequate charge and discharge
connections. Use a tank containing weak acid: 5% phosphoric acid, or if
the exchangers have to be cleaned often: 5% oxalic acid. The liquid
detergent must circulate around the exchanger at a flow rate at least 1.5
times higher than the rated working flow rate. The first detergent cycle
cleans up the worst of the dirt. After the first cycle, carry out another
cycle with clean detergent to complete the operation. Before starting up
the system again, rinse abundantly with water to get rid of any traces of
acid and bleed any air from the system; if necessary start up the service
pump.
Maintenance work while the unit is switched
OFF
Every 6
months
End of
season
Check control board contactors.
X
Inspect and make sure electric contacts and
relative terminals are securely fastened.
X
Make sure condensing coils are clean. X X
Empty the water system (if necessary).
X
(*) May only be carried out by skilled personnel from service centres
authorised by Rhoss, qualified to work on this type of product.
17

SECTION II: INSTALLATION AND MAINTENANCE
Fig. 11
1. TCAE-TCAES-THAE-THAES
2. Auxiliary cock
3. Gate valve
4. Wash pump
5. Filter
6. Acid tank
II.4.3 SEASONAL BREAKS
DANGER!
When the appliance is not used for long periods of
time, disconnect the unit by opening the general
isolator with door interlock on the power circuit.
To avoid the migration of coolant into the compressor while the
appliance is not in use, stock the coolant charge in the condensing coils
by carrying out a pump-out procedure.
II.5
SPECIAL MAINTENANCE
IMPORTANT!
Maintenance work must be carried out by skilled
technicians from service centres authorised by
RHOSS, qualified to work on this type of product.
DANGER!
Do not introduce pointed objects through the air
delivery intake grilles.
DANGER!
Always act on the disconnecting switch to
disconnect the unit from the mains power supply
before carrying out any maintenance work, even if
you only intend to make an inspection.
DANGER!
In the case of cooling or fan circuit component
breakage or a drop in the coolant gas charge, the
upper part of the compressor casing and the
discharge line may reach temperatures as high as
180°C for brief periods of time.
II.5.1 REPAIRS AND COMPONENT
REPLACEMENT
• If any of the cooling circuit components need replacing, it is
necessary to bear in mind the indications in the following Paragraphs.
• Always refer to the wiring diagrams enclosed with the appliance
when replacing electrically powered components. Always take care to
clearly label each wire before disconnecting to avoid making mistakes
later when re-wiring.
• When the machine is started up again, always repeat the start-up
procedure outlined in Paragraph II.2.3.7.
• After carrying out any maintenance work, keep an eye on the liquidmoisture
sight-glass (LUE). After the appliance has been running for at
least 12 hours the cooling circuit must be completely “dry” and the LUE
must be green, otherwise replace the filter.
II.5.1.1 Topping up or replacing the coolant
○ The units are factory tested with a suitable coolant charge. When
the charged is replaced or topped up, the ambient and working
conditions of the appliance must be taken into account.
○ While the unit is running the coolant may be topped up on the low
pressure branch, upstream of the evaporator, using the pressure
connections provided. Any topping up of coolant must be carried out
while the coolant is in a liquid state to avoid changing its composition.
○ While topping up, watch the liquid indicator to make sure the liquid
is completely clear without any bubbles whatsoever.
○ Only restore the gas charge following maintenance operations on
the cooling circuit after the circuit has been washed-out very carefully
and after the following operations have been carried out:
• install an antacid filter on the compressor inlet and then run the unit
for at least 24 hours;
• check the degree of acidity, if necessary change the gas and oil and
then run the unit for at least 24 hours;
• remove the antacid filter cartridge.
II.5.1.2 Compressor operation
While the unit is switched off, the oil level in the compressors must
reach half way up the sight glass on the casing. The oil may be topped
up after pumping-out the compressors, using the pressure connection
on the compressor inlet.
Whenever the overload protection is triggered, normal running
conditions are automatically restored when the temperature of the
windings falls below the set safety value (this could take from a few
minutes to some hours). The power circuit overload protection is
managed by the microprocessor controller. Once the overload
protection has been triggered and reset, it is necessary to reset the
alarm on the control board. We recommend installing a remote
controlled lamp/LED signal for each compressor to warn that the
overload protections have been triggered.
II.5.1.3 ST2 antifreeze safety temperature sensor
operation
After the sensor has been activated, the alarm on the control board
must be reset. The unit restarts automatically only when the water
temperature exceeds the intervention differential.
Check the efficiency of the antifreeze protection with the help of a
precision thermometer immersed with the sensor in a container full of
cold water at a temperature below the antifreeze alarm temperature
setting. This may be done after the sensor has been removed from the
pocket on the evaporator outlet; take care not to damage the sensor
while removing it from its pocket. The sensor must be replaced with the
utmost care: introduce some conduction paste into the pocket, insert
the sensor and re-seal the external part with silicone to prevent it from
slipping out.
II.5.1.4 VTE/VTI thermostat operation
The thermal expansion valve is calibrated to maintain the gas
superheated by at least 6°C, to avoid any liquid being sucked into the
compressor.
If the superheating setting needs to be changed, act on the valve as
follows:
1. Bulb with MOP charge
2. Equalisation capillary connection
3. Valve body
4. Superheating adjustment screw
Fig. 12
Remove the screwcap on the side of the valve and then act on the
adjustment screw. By increasing or decreasing the amount of coolant,
the superheating temperature value is either decreased or increased.
The temperature and pressure inside the evaporator remains more or
less the same, regardless of changes to the heat load. After any
adjustments to the valve it is advisable to allow a few minutes to elapse
to give the system the chance to re-stabilise.
18

SECTION II: INSTALLATION AND MAINTENANCE
II.5.1.5
PA high pressure switch operation
After the high pressure switch has been triggered the pressure switch
needs to be reset manually by pushing firmly the black press-button on
the pressure switch itself. Then reset the alarm on the control board.
Test: remove the fuses protecting the fans inside the control board,
close the control board and restart the unit, wait for the high pressure
switch to trigger and keep the high pressure gauges under control.
If during the test the pressure indicated on the high pressure gauges
exceeds 25 bar switch the unit off immediately by acting on the ON/OFF
switch on the control board and replace the component.
II.5.1.6 PB low pressure switch operation
After the low pressure switch has been triggered it is necessary to reset
the alarm on the control board. The pressure switch rearms
automatically only when the intake pressure reaches a value above the
differential calibration setting.
Test: while the appliance is running normally, slowly close the cock on
the liquid line. Wait for the low pressure switch to trigger and keep the
low pressure gauges under control.
If during the test the pressure indicated on the low pressure gauges
remains below 0 bar and the pressure switch does not trigger, switch
the unit off immediately by acting on the ON/OFF switch on the control
board and replace the component.
II.5.2 DISMANTLING THE UNIT – DISPOSAL OF
HAZARDOUS COMPONENTS/SUBSTANCES
ENVIRONMENT SAFEGUARD!
RHOSS cares about protecting the environment.
When the unit is dismantled it is important to
adhere scrupulously to the following procedures
○ The unit should only be dismantled by a firm authorized to
dispose of obsolete products/machines.
○ The machine is mainly made up of secondary raw materials
and the following regulations must be observed:
• the compressor oil must be removed, recovered and delivered to a
body authorized to collect exhausted oil;
• if antifreeze has been added to the system, antifreeze is a pollutant
and may not be disposed of freely. It must be recovered and reused if
possible;
• coolant gas may not be discharged into the atmosphere. It must be
recovered using type-approved equipment and adequate gas canisters.
It must then be delivered to an authorized collection centre;
• the dehydrator filter and electronic components (electrolytic
condensers) are considered special waste, and must be delivered to a
body authorized to collect such items;
• the polyurethane foam rubber and foamed polyethylene mesh
insulation on the pipes, the foamed polyurethane covering the
accumulation tank and the sound-absorbent sponge on the casing must
be removed and processed as urban refuse.
19

II.5.3
TROUBLESHOOTING
SECTION II: INSTALLATION AND MAINTENANCE
Inconvenience
Recommended action
1 - THE PRIMARY CIRCULATION PUMP DOES NOT START (IF CONNECTED): water differential pressure switch alarm
No power to pumping assembly.
Check electrical connections and auxiliary fuses.
No signal from control board.
Check, call an authorised service centre.
Pump jammed.
Check, unblock if necessary.
Pump motor malfunction.
Repair or replace pump.
Pump speed switch malfunction.
Check, replace component.
Working set point reached
Check.
2 - THE COMPRESSOR DOES NOT START
Microprocessor board alarm.
Identify alarm and intervene if necessary.
No power supply, general isolator open.
Close general isolator.
Overload protection triggered.
1 Reset switch.
2 Check unit at start up.
No cooling request (heating function as heat pump) from user with correct
working set point.
Check and if necessary wait for cooling request (heating).
Working set point too high (too low in heat pump function).
Check and if necessary reset calibration set point.
Faulty contactors.
Replace or repair contactors
Compressor electric motor malfunction.
Check for short circuit.
3 - THE COMPRESSOR DOES NOT START AND YOU CAN HEAR A BUZZING NOISE
Incorrect power supply voltage.
Check voltage and correct phase sequence, verify cause.
Compressor contactor malfunction.
Replace contactor.
Mechanical problems in the compressor.
Recondition the compressor.
4 - THE COMPRESSOR STARTS AND STOPS: low pressure switch alarm
Low pressure switch malfunction.
Check pressure switch calibration and operation.
Insufficient coolant charge.
1 Identify and eliminate any leaks;
2 Restore correct charge.
Coolant line filter clogged (appears frosted).
Replace filter.
Expansion valve malfunction
5 - THE COMPRESSOR STOPS: high pressure switch alarm
High pressure switch malfunction.
Insufficient cooling air in the coils (during chiller function).
High ambient temperature.
Insufficient water circulation on the plate exchanger (during heat pump
function).
Air in the water system (during heat pump function).
Excessive coolant charge.
6 - COMPRESSORS TOO NOISY - EXCESSIVE VIBRATIONS
The compressor is pumping liquid, excessive increase of coolant in sump.
Mechanical problems in the compressor.
Unit running in limit conditions.
7 - THE COMPRESSOR RUNS CONTINUOUSLY
Excessive thermal load.
Working set point too low in cooling cycle (too high in heating cycle).
Insufficient coil ventilation (during chiller function).
Insufficient water circulation on plate exchanger (during heat pump function).
Check calibration, adjust overheating, replace if necessary.
Check pressure switch calibration and operation.
1 Check clearances and make sure coils are not obstructed.
2 Check fan function.
Check unit working limits.
Check and adjust if necessary.
Vent the water system.
Discharge excess.
1 Check expansion valve.
2 Check superheating.
3 Adjust superheating, if necessary replace expansion valve.
Recondition the compressor.
Check yields according to stated limits.
Check system sizing, leakage and insulation.
Check calibration and reset.
1 Check clearances and make sure coils are not obstructed.
2 Check fan function.
Check and adjust if necessary.
Air in the water system (during heat pump function).
Insufficient coolant charge.
Coolant line filter clogged (appears frosted).
Control board malfunction.
Expansion valve malfunction.
Contactor malfunction.
8 - HIGH DELIVERY PRESSURE AT RATED CONDITIONS
Insufficient cooling air at the coils (during chiller function).
Insufficient water circulation on the plate exchanger (during heat pump
function).
Air in the water system (during heat pump function).
Excessive coolant charge.
9 - LOW DELIVERY PRESSURE AT RATED CONDITIONS
Insufficient coolant charge.
Air in the water system (during chiller function).
Insufficient water flow rate to the evaporator (during chiller function).
Mechanical problems in the compressor.
Excessive thermal load (during heat pump function).
KFI accessory malfunction (if assembled).
Vent the system.
1 Identify and eliminate any leaks;
2 Restore correct charge.
Replace filter.
Replace board and check.
Check calibration, adjust operation, replace if necessary.
Check.
Check fan function, clearances and make sure there are no obstructions
in the coils.
Check, adjust if necessary.
Vent the system.
Discharge excess.
1 Identify and eliminate any leaks;
2 Restore correct charge.
Vent the system.
Check, adjust if necessary.
Recondition the compressor.
Check system sizing, leakage and insulation.
Check calibration, adjust if necessary.
20

SECTION II: INSTALLATION AND MAINTENANCE
10 - HIGH INTAKE PRESSURE AT RATED CONDITIONS
Excessive thermal load (during chiller function).
Check system sizing, leakage and insulation.
High ambient temperature (during heat pump function).
Check unit working limits.
Expansion valve malfunction.
Check valve operation, clean the nozzle, adjust superheating, replace if
necessary.
Mechanical problems in the compressor.
Recondition the compressor.
11 - LOW INTAKE PRESSURE AT RATED CONDITIONS
Insufficient coolant charge.
1 Identify and eliminate any leaks;
2 Restore correct charge.
Dirty plate exchanger (finned coil during heat pump function).
Check, wash.
Filter partially clogged.
Replace.
Expansion valve malfunction.
Check valve operation, clean the nozzle, adjust superheating, replace if
necessary.
Insufficient ventilation in evaporating coils (during heat pump function).
Check fan function, clearances and make sure there are no obstructions
in the coils.
Air in the water system (during chiller function).
Vent the system.
Insufficient water flow rate (during chiller function).
Check, adjust if necessary.
12 - ONE OF THE FANS DOES NOT WORK OR STARTS AND STOPS
Switch or contactor malfunction, auxiliary circuit interrupted.
Check, replace if necessary.
Thermal overload protection triggered.
Check for short circuits, replace motor.
13 - THE UNIT DOES NOT CARRY OUT DEFROSTING CYCLE (FROZEN COILS) – during heat pump function.
4 way valve damaged. Check, replace if necessary.
Defrosting sensor interrupted.
Check for coil sensor malfunction, replace if necessary.
21

ENCLOSED DOCUMENTS
ENCLOSED DOCUMENTS
A1 GEOMETRICAL FEATURES OF STANDARD VERSIONS
TCAE-TCAES-THAE-THAES 230 ÷ 260
1. Evaporator/condenser
2. Compressor
3. Condenser/evaporator
4. Control board
5. Fan
6. Evaporator/condenser water
inlet
7. Evaporator/condenser water
outlet
8. Power supply
9. General isolator with door
interlock
10. Keyboard with display
11. Condensate drain
12. Lifting attachment
13. Evaporator/condenser drain
Fig. 13
TCAE-TCAES-THAE-THAES 470 ÷ 4160
Fig. 14
MODEL 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Size
a (TCAE - THAE) mm 1510 1510 2260 2260 2260 2780 2780 2780 2780 3530 3530 3530
a (TCAES - THAES) mm 1510 2260 2260 2260 3010 2780 2780 2780 3530 3530 3530 -
b mm 1050 1050 1050 1050 1050 1200 1200 1200 1200 1200 1200 1200
c mm 1730 1730 1730 1730 1730 2210 2210 2210 2210 2250 2250 2250
f (TCAE - THAE) mm 670 670 1420 1420 1420 - - - - - - -
f (TCAES - THAES) mm 670 1420 1420 1420 2170 - - - - - - -
g (TCAES - THAES) mm - - - - 1085 - - - - - - -
Water connections 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G
Condensate drain ∅e mm 22 22 22 22 22 22 22 22 22 22 22 22
Weight (*) (TCAE) kg 450 540 610 620 660 1120 1140 1320 1440 1620 1740 1850
Weight (*) (THAE) kg 500 600 660 670 710 1290 1390 1470 1590 1770 1890 200
Weight (*) (TCAES) kg 460 600 620 640 720 1230 1300 1410 1580 1780 1900 -
Weight (*) (THAES) kg 510 650 670 700 780 1390 1450 1620 1730 1910 2030 -
(*) Weights indicate completely accessorised units.
22

ENCLOSED DOCUMENTS
A2 GEOMETRICAL FEATURES OF VERSIONS WITH ASP INTEGRATED ACCUMULATION ASSEMBLY (TANK &
PUMP)
TCAE-TCAES-THAES-THAES 230 ÷ 260
Fig. 15
TCAE-TCAES-THAE-THAES 470 ÷ 4160
1. Evaporator/condenser
2. Compressor
3. Condenser/evaporator
4. Control board
5. Fan
6. Evaporator/condenser water
inlet
7. Evaporator/condenser water
outlet
8. Power supply
9. General isolator with door
interlock
10. Keyboard with display
11. Condensate drain
12. Lifting attachment
13. Expansion tank
14. System gauge
15. Safety valve
16. Manual air vent
17. Accumulation tank
18. Accumulation tank drain
19. Evaporator/condenser drain
20. P motor-driven pump
Fig. 16
MODEL 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Size
a (TCAE - THAE) mm 1510 1510 2260 2260 2260 2780 2780 2780 2780 3530 3530 3530
a (TCAES - THAES) mm 1510 2260 2260 2260 3010 2780 2780 2780 3530 3530 3530 -
b mm 1050 1050 1050 1050 1050 1200 1200 1200 1200 1200 1200 1200
c mm 1730 1730 1730 1730 1730 2210 2210 2210 2210 2250 2250 2250
f (TCAE - THAE) mm 670 670 1420 1420 1420 - - - - - - -
f (TCAES - THAES) mm 670 1420 1420 1420 2170 - - - - - - -
g (TCAES - THAES) mm - - - - 1085 - - - - - - -
Water connections 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G
Condensate drain ∅e mm 22 22 22 22 22 22 22 22 22 22 22 22
Weight (*) (TCAE) kg 630 720 860 870 910 1370 1390 1570 1690 2010 2130 2240
Weight (*) (THAE) kg 680 780 910 920 960 1540 1640 1720 1840 2160 2280 2390
Weight (*) (TCAES) kg 640 850 870 890 970 1480 1550 1660 1970 2170 2290 -
Weight (*) (THAES) kg 690 900 920 950 1030 1640 1700 1870 2120 2300 2420 -
(*) Weights indicate completely accessorised units.
23

ENCLOSED DOCUMENTS
A3 GEOMETRICAL FEATURES OF VERSION WITH MOTOR-DRIVEN PUMP (PUMP)
TCAE-TCAES-THAE-THAES 230 ÷ 260
Fig. 17
1. Evaporator/condenser
2. Compressor
3. Condenser/evaporator
4. Control board
5. Fan
6. Evaporator/condenser water
inlet
7. Evaporator/condenser water
outlet
8. Power supply
9. General isolator with door
interlock
10. Keyboard with display
11. Condensate drain
12. Lifting attachment
13. evaporator/condenser drain
14. P motor-driven pump
15. P-PU or PU/DP motor-driven
pumps
16. Motor-driven pump,
primary/secondary circulation
pump and stand-by pump
selector
TCAE-TCAES-THAE-THAES 470 ÷ 4160
Fig. 18
MODEL 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Size
a (TCAE - THAE) mm 1510 1510 2260 2260 2260 2780 2780 2780 2780 3530 3530 3530
a (TCAES - THAES) mm 1510 2260 2260 2260 3010 2780 2780 2780 3530 3530 3530 -
b mm 1050 1050 1050 1050 1050 1200 1200 1200 1200 1200 1200 1200
c mm 1730 1730 1730 1730 1730 2210 2210 2210 2210 2250 2250 2250
f (TCAE - THAE) mm 670 670 1420 1420 1420 - - - - - - -
f (TCAES - THAES) mm 670 1420 1420 1420 2170 - - - - - - -
g (TCAES - THAES) mm - - - - 1085 - - - - - - -
Water connections 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G 2G
Condensate drain ∅e mm 22 22 22 22 22 22 22 22 22 22 22 22
Weight (*) (TCAE) kg 498 588 658 668 708 1238 1258 1438 1558 1738 1858 1968
Weight (*) (THAE) kg 598 648 708 718 758 1408 1508 1588 1708 1888 2008 2118
Weight (*) (TCAES) kg 508 648 668 688 768 1348 1418 1528 1698 1898 2018 -
Weight (*) (THAES) kg 558 698 718 748 828 1508 1568 1738 1848 2028 2148 -
(*) Weights indicate completely accessorised units (with 3 motor-driven pumps).
24

ENCLOSED DOCUMENTS
A4
HOOK-UP DIAGRAMS
VERSION WITH ASP INTEGRATED ACCUMULATION TANK (TANK & PUMP)
Fig. 19
PRESSURE DEVELOPMENT OF MOTOR-DRIVEN PUMPS
Acc. capacity Expansion tank
Residual pressure
Rated flow rate
MACHINE MODEL
capacity
development
l l l/h P1 (kPa) P3 (kPa)
TCAE - THAE - TCAES - THAES 230 80 14 5400 109 192
TCAE - THAE 235
80
TCAES – THAES 235
150
14 6470 99 177
TCAE - THAE - TCAES - THAES 245 150 14 7980 87 172
TCAE - THAE - TCAES - THAES 250 150 14 9220 N.D. 144
TCAE - THAE - TCAES - THAES 260 150 14 10770 N.D. 119
P5 (kPa) P7 (kPa)
TCAE - THAE - TCAES - THAES 470 150 14 12940 135 255
TCAE - THAE - TCAES - THAES 490 150 14 15790 118 236
TCAE - THAE - TCAES - THAES 4100 150 14 17220 110 225
TCAE – THAE 4110
150
TCAES - THAES 4110
290
14 19640 88 (*) 207
TCAE - THAE - TCAES - THAES 4130 290 14 23460 N.D. 170
TCAE - THAE - TCAES - THAES 4140 290 14 25770 N.D. 143
TCAE - THAE 4160 290 14 27900 N.D. 123
(*) Not available for TCAES-THAES 4110
KEY COMPONENT description
C
system charging valve
ECH plate exchanger
M system gauge
P
primary circulation pump
P-P/DP primary circulation pump and stand-by
PD differential pressure switch
PU secondary circulation pump
PU-PU/DP secondary circulation pump and stand by
GI antivibration connection
FI low pressure drop filter
FL flow switch
RI interception valve
S
system drain
SA accumulation tank
VE expansion tank
VS safety valve
VSM manual discharge valve
- - - - - - user set-up connections
25

ENCLOSED DOCUMENTS
Version with motor-driven circulation pumps on primary circuit P-P/DP
Fig. 20
Version with motor-driven circulation pumps on primary circuit P-P/DP and motor-driven circulation pump on secondary circuit PU
Fig. 21
Version with motor-driven circulation pump on primary circuit P and motor-driven pumps on secondary circuit PU-PU/DP
Fig. 22
PUMP TOTAL STATIC PRESSURE
Rated flow rate P1 (kPa) P3 (kPa) Rated flow rate P5 (kPa) P7 (kPa)
l/h kPa kPa l/h kPa kPa
4000 174 256 9500 194 317
5400 171 253 12940 190 311
6000 170 251 14400 189 309
6470 169 250 15790 186 305
7200 167 248 16500 186 303
7980 164 245 17220 185 301
8600 163 244 18400 183 297
9220 161 242 19640 178 293
10000 158 239 21500 174 287
10770 154 237 23460 167 280
12000 148 232 24600 164 276
25770 158 270
26800 155 266
27900 149 258
31000 136 244
26

A5
TECHNICAL FEATURES
ENCLOSED DOCUMENTS
MODEL TCAE 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Technical data
Nominal cooling capacity (*) kW 31,4 37,6 46,4 53,6 62,9 75,2 91,8 100,1 114,2 136,4 149,8 162,2
Scroll compressor/Steps n° 2/2 2/2 2/2 2/2 2/2 4/4 4/4 4/4 4/4 4/4 4/4 4/4
Circuits n° 1 1 1 1 1 2 2 2 2 2 2 2
Fans n° x kW 1 x 0,54 1 x 0,54 2 x 0,54 2 x 0,54 2 x 0,54 3 x 0,54 3 x 0,54 3 x 0,54 3 x 0,54 3 x 1,80 3 x 1,80 3 x 1,80
Fan nominal air flow m³/h 9900 9700 16200 20400 19800 30400 29600 29600 28800 56800 59200 56800
Evaporator nominal water flow l/h 5400 6470 7980 9220 10770 12940 15790 17220 19640 23460 25770 27900
Evap. nominal pressure drops kPa 30 30 36 33 45 36 38 37 37 39 48 44
Evaporator water contents l 2,8 3,3 3,9 4,9 5,5 6,3 7,5 8,4 9,6 11,3 12,1 13
R407c refrigerant charge Kg 8,5 9 13 15 17 23 29 34 35 40 42 45
Polyolesters oil charge l 1,6 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4
MODEL TCAE 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Electrical data
Total absorbed power (*) kW 11,1 13,5 17,5 19,4 22,7 27,7 33,3 36,7 41,7 47,2 50,9 58,2
Power supply V-ph-Hz 400-3-50
Auxiliary power supply V-ph-Hz 230-1-50
Control power supply V-ph-Hz 12-1-50
Nominal current A 19,6 26,6 31,4 36,2 38,2 52,5 62,0 71,0 75,6 85,4 93,7 98,9
Maximum current A 23,9 30,8 37,4 42,6 46,7 62,3 73,6 84,8 92,2 108,6 117,7 126,8
Starting current A 86,6 116,2 144 150,5 190,5 147,6 180,1 192,7 236 252,5 287 296,1
MODEL TCAES 230 235 245 250 260 470 490 4100 4110 4130 4140
Technical data
Nominal cooling capacity (*) kW 31,4 37,6 46,4 53,6 62,9 75,2 91,8 100,1 114,2 136,4 149,8
Scroll compressor/Steps n° 2/2 2/2 2/2 2/2 2/2 4/4 4/4 4/4 4/4 4/4 4/4
Circuits n° 1 1 1 1 1 2 2 2 2 2 2
Fans n° x kW 1 x 0,25 2 x 0,25 2 x 0,25 2 x 0,25 3 x 0,25 3 x 0,25 3 x 0,25 2 x 0,80 4 x 0,25 3 x 1,16 3 x 1,16
Fan nominal air flow m³/h 7600 16000 15800 15600 24000 23000 22200 21600 29600 46000 42000
Evaporator nominal water flow l/h 5400 6470 7980 9220 10770 12940 15790 17220 19640 23460 25770
Evap. nominal pressure drops kPa 30 30 36 33 45 36 38 37 37 39 48
Evaporator water contents l 2,8 3,3 3,9 4,9 5,5 6,3 7,5 8,4 9,6 11,3 12,1
R407c refrigerant charge Kg 9 10 14 17 20 25 31 36 39 45 50
Polyolesters oil charge l 1,6 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4
MODEL TCAES 230 235 245 250 260 470 490 4100 4110 4130 4140
Electrical data
Total absorbed power (*) kW 11,1 13,5 17,5 19,4 22,7 27,7 33,3 36,7 41,7 47,2 50,9
Power supply V-ph-Hz 400-3-50
Auxiliary power supply V-ph-Hz 230-1-50
Control power supply V-ph-Hz 12-1-50
Nominal current A 19,6 26,6 31,4 36,2 38,2 52,5 62,0 71,0 75,6 85,4 93,7
Maximum current A 23,9 30,8 37,4 42,6 46,7 62,3 73,6 84,8 92,2 108,6 117,7
Starting current A 86,6 116,2 144 150,5 190,5 147,6 180,1 192,7 236 252,5 287
(*) At the following conditions: condenser inlet air temperature 35°C; chilled water temperature 7°C; water ∆t at the evaporator 5°C.
27

ENCLOSED DOCUMENTS
MODEL THAE 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Technical data
Nominal cooling capacity (*) kW 30,1 36,2 45,9 51,2 59,9 72,5 87,6 95,5 110,3 130,6 142,7 156,7
Nominal heating capacity (**) kW 36,9 45,4 56,3 62,6 72,5 89,7 110,1 122,7 144,2 160,5 179,7 201,0
Scroll compressor/Steps n° 2/2 2/2 2/2 2/2 2/2 4/4 4/4 4/4 4/4 4/4 4/4 4/4
Circuits n° 1 1 1 1 1 2 2 2 2 2 2 2
Fans n° x kW 1 x 0,54 1 x 0,54 2 x 0,54 2 x 0,54 2 x 0,54 3 x 0,54 3 x 0,54 3 x 0,54 3 x 0,54 3 x 1,80 3 x 1,80 3 x 1,80
Fan nominal air flow m³/h 9900 9700 16200 20400 19800 30400 29600 29600 28800 56800 59200 56800
Cond./evap. nominal water flow l/h 5180 6230 7900 8810 10300 12470 15070 16430 18970 22470 24550 26950
Cond./evap. nominal pressure drops kPa 28 28 35 30 41 33 35 34 34 36 43 41
Cond./evap. water contents l 2,8 3,3 3,9 4,9 5,5 6,3 7,5 8,4 9,6 11,3 12,1 13
R407c refrigerant charge Kg 10,5 12 13,5 15 16 36 38 40 42 46 48 52
Polyolesters oil charge l 1,6 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4
MODEL THAE 230 235 245 250 260 470 490 4100 4110 4130 4140 4160
Electrical data
Winter tot. absorbed power(**) kW 11,1 13,8 17,9 19,6 23,1 31,0 38,0 43,6 49,6 56,1 64,4 70,6
Summer tot. absorbed power (*) kW 11,1 13,5 17,5 19,4 22,7 27,7 33,3 36,7 41,7 47,2 50,9 58,2
Power supply V-ph-Hz 400-3-50
Auxiliary power supply V-ph-Hz 230-1-50
Control power supply V-ph-Hz 12-1-50
Nominal current (***) A 19,6 26,6 31,4 36,2 38,2 55,8 66,5 76,3 82,4 95,6 107,3 116,3
Maximum current A 23,9 30,8 37,4 42,6 46,7 62,3 73,6 84,8 92,2 108,6 117,7 126,8
Starting current A 86,6 116,2 144 150,5 190,5 147,6 180,1 192,7 236 252,5 287 296,1
MODEL THAES 230 235 245 250 260 470 490 4100 4110 4130 4140
Technical data
Nominal cooling capacity (*) kW 30,1 36,2 45,9 51,2 59,9 72,5 87,6 95,5 110,3 130,6 142,7
Nominal heating capacity (**) kW 36,9 45,4 56,3 62,6 72,5 89,7 110,1 122,7 144,2 160,5 179,7
Scroll compressor/Steps n° 2/2 2/2 2/2 2/2 2/2 4/4 4/4 4/4 4/4 4/4 4/4
Circuits n° 1 1 1 1 1 2 2 2 2 2 2
Fans n° x kW 1 x 0,25 2 x 0,25 2 x 0,25 2 x 0,25 3 x 0,25 3 x 0,25 3 x 0,25 2 x 0,80 4 x 0,25 3 x 1,16 3 x 1,16
Fan nominal air flow m³/h 7600 16000 15800 15600 24000 23000 22200 21600 29600 46000 42000
Cond./evap. nominal water flow l/h 5180 6230 7900 8810 10300 12470 15070 16430 18970 22470 24550
Cond./evap. nominal pressure drops kPa 28 28 35 30 41 33 35 34 34 36 43
Cond./evap. water contents l 2,8 3,3 3,9 4,9 5,5 6,3 7,5 8,4 9,6 11,3 12,1
R407c refrigerant charge Kg 11 13 14 15,5 17,5 37 39 41 44 47 50
Polyolesters oil charge l 1,6 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 2 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4 4,0 x 4
MODEL THAES 230 235 245 250 260 470 490 4100 4110 4130 4140
Electrical data
Winter tot. absorbed power(**) kW 11,1 13,8 17,9 19,6 23,1 31,0 38,0 43,6 49,6 56,1 64,4
Summer tot. absorbed power (*) kW 11,1 13,5 17,5 19,4 22,7 27,7 33,3 36,7 41,7 47,2 50,9
Power supply V-ph-Hz 400-3-50
Auxiliary power supply V-ph-Hz 230-1-50
Control power supply V-ph-Hz 12-1-50
Nominal current (***) A 19,6 26,6 31,4 36,2 38,2 55,8 66,5 76,3 82,4 95,6 107,3
Maximum current A 23,9 30,8 37,4 42,6 46,7 62,3 73,6 84,8 92,2 108,6 117,7
Starting current A 86,6 116,2 144 150,5 190,5 147,6 180,1 192,7 236 252,5 287
(*) At the following conditions: condenser inlet air temperature 35°C; chilled water temperature 7°C; water ∆t at the evaporator 5°C.
(**) At the following conditions: evaporator inlet air temperature 7°C (dry bulb), 70% relative humidity; hot water temperature 45°C.
(***) Nominal current data are the maximum value between summer and winter operation.
28

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31

TCAE - TCAES 230÷4160
THAE - THAES 230÷4160
H50429 -GB- 07.02 – PS/ET
RHOSS S.p.A.
Via Oltre Ferrovia - 33033 Codroipo (UD) Italia- tel. 0432.911611 - fax 0432.911600 - rhoss@rhoss.it www.rhoss.it - www.rhoss.com
RHOSS Iberica s.l.
C/ Leonardo da Vinci, 4 - Pol. Ind. Camí Ral - 08850 Gavà (Barcelona) - telf. ++34-93-6334733 - fax ++34-93-6334734 - contact@irsap - rhoss.com
IR GROUP S.a.r.l.
7 rue du Pont à Lunettes - 69390 Vourles - tél. ++33-04-72318631 - fax ++33-04-72318632 – irsaprhoss@irgroup.fr
RHOSS Deutschland GmbH
Hölzlestraße 23, D-72336 Balingen, OT Engstlatt - tel. ++49-7433-260270 - fax ++49-7433-2602720 info@rhoss.de www.rhoss.de
RHOSS CHINA Representative Office
RM.804 – Building A – Everbright City N. 218, Tianmuxi Road – Shanghai 200070 – China tel. 0086-21-63531696 – fax 0086-21-63531697 – rhosschina@hotmail.com
Sedi commerciali: / Branch offices:
Area Nord-Est: 33033 Codroipo (UD) - Via Oltre Ferrovia - tel. 0432.911611 - fax 0432.911600
Area Nord-Ovest: 20041 Agrate B. (MI) - Centro Colleoni - pal. Taurus, 1 - tel. 0396898394 - fax 0396898395
Area Centro-Nord: 50127 Firenze - Via F. Baracca, 148/R - tel. 0554360492 - fax 055413035
Area Centro-Sud: 00199 Roma - Viale Somalia, 148 - tel. 068600699-068600707 - fax 068600747
Area Sud-Ovest: 80026 Casoria (NA) - Via Nazionale delle Puglie, 259 - tel. 0815846102 - fax 0815846078
Area Sud: 70123 Bari - Viale dei Maestri del Lavoro, 4 - tel. 0805311034 - fax 0805311000