Danfoss REP24CO3 User manual

REP24 CO3
GB Installation Instructions
User Instructions
Electronic Proportional Heat / Cool Thermostat

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Index
INDEX
Installation Instructions 3-6
User Instructions 8
GB

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Please note
This product should only be installed by a suitably qualied
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
Installation Instructions
Thermostat features
Temperature Range 10-30°C
Manual Fan Speed Selector Yes
Fan Output 3 (1) A, 10-230Vac, Type 1B
Thermostat Heat, O, Cool
Selector Yes
Power Supply 24 Vac ± 15%, 50/60Hz
Control Method P+I, 2k Proportional Band
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
Control Output 0-10 Vdc
Common Supply 10 - 230 Vac
Specication
GB

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Installation Instructions
GB
Wiring
Product overview
This thermostat is designed for fan coil and chilled beam
applications alongside proportional valves and actuator systems
where a 0-10v proportional control output is required.
The thermostat has a 3 speed fan output selectable via a switch on
the front of the unit.
The operational mode of the fan (auto or continuous is selected
at time of installation via DIL switches accessible on the rear of
the unit.
When the unit is in standby the fans are switched o.
Installation
First remove the wallplate from the back of the unit.
Fix at a height of approximately 1.5m from the oor, away
from draughts or heat sources such a fan-coil outlets,
sunlight or oce equipment.

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Connection Diagram
0V 24V Fan 1
COM
0V/
return
3 Speed
Fan
Electronics
Common In
Heating
24 Vac
N
Fan 2 Fan 3
Cool Heat
Cooling
0-10V outputs
or
AB
Commissioning
Prior to re-tting the thermostat to the wallplate, the DIL switches
on the rear of the unit must be set to the desired setting.
Installation Instructions
GB

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Installation Instructions
GB DIL Switch options, shown in factory set position.
DIL Switch Descriptions
Switch 1: Fan Con - Fan will run whenever thermostat is in heat-
ing or cooling mode.
Fan Auto - Fan will run whenever temperature is
0.2°C or more above/below (depending on heat/cool
mode) setpoint. When temperature reaches setpoint,
the fan will switch o.
Switch 2: MOT - Motorised valve actuator selection.
WAX - Wax valve actuator selection.
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 rmly to engage
the securing clip in the wallplate.
Fan Con Fan Auto
Sw On
1
MOT WAX
2

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Locking and 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.
Installation Instructions
GB

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User Instructions
GB User Instructions
Setting the temperature
Turn the setting dial to the required temperature.
Frost Protection
To activate frost protection, turn the dial below 10°C. Frost
protection becomes active at 8°C. If the temperature in the room
drops below 8°C then the output will activate.
When frost protection is activated the right LED will turn orange.
Standby Mode
In cooling mode, the standard frost protection is not available;
instead there is standby mode. When the dial is turned past 10°C
the unit enters standby mode and cooling will be inactive until the
dial is turned up past 10°C.

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Heat
Standby
Cool
LED lit green when thermostat is powered and fan is in continuous mode LED lit orange when fan is running in auto mode
LED o when setpoint reached LED red when heating LED green when cooling LED orange when frost protection is activated
Fan speed 3 Fan speed 2 Fan speed 1
Temperature setting dial
User Instructions
GB
Frost protection mode

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www.danfoss.com/BusinessAreas/Heating
Part No 25286v01 07/08
(2004/108/EC)
(2006/95/EC)