Danfoss RET 230 HCW-3 User manual

RET 230 HCW-3
GB
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DK
NL
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LT
PL
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Installation Instructions
User Instructions
Instructions d’installation
Instructions d’utilisateur
Anweisungen für Installati
Benutzeranweisen
Instrucciones de instalación
Instrucciones del usuario
Instruktions vejledning
Brugervejleding
Electronic Heat / Cool thermostat with
auto-changeover based on water temperature
Installatie handleiding
Instructiesevoor Gebruik
Ïäçãßåò åãêáôÜóôáóçò
Ïäçãßåò ÷ñÞóçò
Instrukcja instalacji
Instrukcja Użytkownika
Montavimo instrukcijos
Informacija Vartotojui
Istruzioni per l’uso
Istruzioni per l’utente

2
Index
INDEX
Installation Instructions 3-9
User Instructions 10
Instructions d’installation 11-17
Instructions d’utilisateur 18
Anweisungen für Installati 19-25
Benutzeranweisen 26
Instrucciones de instalación 27-33
Instrucciones del usuario 34
Instruktions vejledning 35-41
Brugervejleding 42
Installatie handleiding 43-49
Instructiesevoor Gebruik 50
Ïäçãßåò åãêáôÜóôáóçò 51-57
Ïäçãßåò ÷ñÞóçò 58
Instrukcja instalacji 59-65
Instrukcja Użytkownika 66
Montavimo instrukcijos 67-73
Informacija Vartotojui 74
Istruzioni per l’uso 75-81
Istruzioni per l’utente 82
F
D
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DK
NL
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3
Please note
This product should only be installed by a
suitably qualified electrician or heating installer.
The installation must comply with local Building
Regulations and wiring Regulations, including any
competent person requirements that may exist
Installation
Instructions GB
GB - Installation Instructions
Thermostat features
Temperature range, heating 5-30°C
Water changeover temp
- Cool to Heat
- Heat to Cool
> 30°C
< 16°C
Manual fan speed selector 
Thermostat off/auto & fan on
selector 
Power supply 230 Vac ± 15%, 50/60Hz
Relay outputs, heat/cool & fan 2 x SPST, 3(1)A, 10-230 Vac,
Type 1B
Dimensions (mm) 110 wide x 90 high x 40 high
Design standard EN60730-2-9
Rated impulse voltage 2.5Kv
Ball hardness test 75°C
Control pollution situation Degree 2
Temperature accuracy ±1°C
Specification

4
GB - Installation Instructions
Product overview
The thermostat is designed for use in systems equipped
with fan coils served by a 2-pipe central changeover system.
The thermostat controls the operation of a motorized valve
which, during heating periods, opens when heat is required
and which, during cooling periods, opens when cooling is
required.
The changeover from heating to cooling is achieved
automatically by measuring the temperature of the flow
pipe. If the flow temperature exceeds 30°C the thermostat
operates as a heating thermostat, if the flow temperature
is less than 16°C the thermostat operates as a cooling
thermostat
Important note: It is essential that the circuit in which
the pipe sensor is located is not closed off and that water
circulates past the sensor at all times. This may require
the fitting of a bypass valve between system flow and
return at the end of each circuit.
Installation
First remove the wallplate from the back of the unit.
Ensure that there is a minimum of 50mm above the
unit and 100mm below the unit in order to mount the
plug-in module.
!

5
Fix at a height of approximately 1.5m from the floor,
away from draughts or heat sources such a fan-coil
outlets, sunlight or office equipment.
Pipe sensor location
Fix the pipe sensor to the flow pipe using the clamping
band supplied.
Important note: It is essential that the circuit in which
the pipe sensor is located is not closed off and that
water circulates past the sensor at all times when the
system is in operation. This may require the fitting of a
bypass valve between system flow and return to ensure
circulation past the sensor.
!
PS1
%
BYPASS
PS1
!
GB - Installation Instructions

6
Wiring
2-pipe fan coil application
GB - Installation Instructions
X SEN X SEN NLFAN
3
FAN
2
FAN
1
COM
O/P
3 SPEED
FAN
ELECTRONICS
OUTPUT
COMMON IN
(LIVE IN)
PS1 PIPE
SENSOR
230 VAC
FIXED 3A
N
Note:
If HEAT/COOL/FAN outputs are 230V, link terminals L-COM

7
GB - Installation Instructions
Commissioning
Prior to re-fitting the thermostat to the wallplate, the DIL
switches on the rear of the unit must be set to the desired
setting.
DIL Switch options, shown in factory set position.
ON
ON/OFF CHRONO
°C °F
Sw On
4
3
2
1
CHRONO 3CHRONO 6

8
DIL Switch descriptions
Switch 4: If set to On/Off, both heating and cooling stages
operate in on/off mode. If set to Chrono, heating
stage operates in chrono-proportional modes,
cooling continues in On/off mode
Switch 3: Active only if switch 4 is set to Chrono. This
switch determines the number of cycles per hour
that the thermostat will impose on the system,
the options are three 20 minute cycles or six 10
minute cycles
Switch 2: Allows Celsius or Fahrenheit temperature scaling
to be selected
Switch 1: Not used in this model
GB - Installation Instructions

9
GB - Installation Instructions
Mounting thermostat to the wallplate
To mount the thermostat to the wallplate, align the
tabs on the top of the thermostat with the apertures in
the wallplate and hinge the thermostat down, pressing
firmly to engage the securing clip in the wallplate.
Locking & limiting
To lock or limit the setting range turn the setting dial to 3
and remove knob.
 Position the locking springs on the rear of the dial to the
desired position and re-mount the knob ensuring that
number 3 on the dial aligns with the reference mark
on the case.

10
Fan runs continuously Fan runs with heat or cool demand Thermostat off LED lit green when thermostat is powered LED lit orange when fan running
LCD display shows actual room temperature unless knob is moved at which time a flashing set temperature is momentarily displayed. During heating demand a flame symbol is lit, during cooling demand a snowflake symbol is lit
LED lit green during heating or cooling demand
Fan speed 3 Fan speed 2 Fan speed 1
Temperature setting dial, read setting off LCD display
Note: Should it be necessary to reset the microprocessor for any reason, a reset button is located beneath the setting dial. Use a non-metallic point, for example a matchstick, to depress the recessed button.
GB - User Instructions
RESET
button