Danfoss WT-DR Installation Manual

Installation Guide

WT-DR/PR Installation Instruction
1 Installation Steps
The User Guide can be downloaded from: heating.danfoss.com.
1. Installation must be done by an authorised electrician.
2. The room thermostat should be installed at approx. 1.5 m
above floor and where the effects of sunlight, draught or oth-
er heat sources (eg. TV's) are avoided. See illustration 1.
2 Wiring
1. Dimensions (see ill. 4).
2. Wiring diagram (see ill. 5, S1, S2: floor sensor terminals; A1,
A2: volt-free auxiliary relay terminals, e.g. boiler).
3. WT-D/P is often used with Danfoss TWA actuator. Depending
on the conditions of power location and actuator type (NC or
NO), the wiring between room thermostat and actuator is dif-
ferent. Follow the illustrations to complete the wiring:
1. When power supply location is close to room thermo-
stat:
3 Error Codes
Item Display
1 E1
2 E2
4 Notes
1. Correct wiring is essential; using instrument to confirm L and
N before wiring is recommended.
2. Don't remove too much of the insulation cover from the wire
to avoid short circuit caused by the naked wire touching the
metal 86 size mounting wall box.
3. Don't let the screw press or touch the wire when using screw
to fix room thermostat in wall box. A short-circuit risk exists if
the wire insulation cover is damaged by the screw, and if the
naked wire connects with the screw.
4. If walls must be painted, mount the room thermostat after
painting, to avoid dust or paint material penetrating the
room thermostat and thus damaging the PCB.
5

Technical Specification

Feature
Approval
Ambient temperature
IP class
Max load, inductive
Max load, resistive
Danfoss Heating Solutions
Description
room sensor failure
floor sensor failure
Description
CE Marking, EN60730
-10 ℃ -60 ℃
30
<1 A
<3 A
3. First of all, carefully remove the cover. See illustration 2.
4. Connect the wire before mounting the back plate to the wall
box using the enclosed screws. Then mount the cover to the
back plate. See illustration 3.
▪ Connect to actuator TWA 230 V NC type (see ill. 6).
▪ Connect to actuator TWA 230 V NO type (see ill. 7).
2. When power supply location is close to actuator:
▪ Connect to actuator TWA 230 V NC type (see ill. 8).
▪ Connect to actuator TWA 230 V NO type (see ill. 9).
5. The max load of relay is 3 A (resistive) or 1 A (inductive, such
as pump, motor). The relay will be damaged if the load ex-
ceeds the limit.
6. Don't cover the thermostat, for instance by hanging towels
directly in front of it.
7. The room thermostat should be connected to the corre-
sponding loop actuator in individual room temperature con-
trol.
Feature
Power consumption
Power supply
Room temperature set range
Floor temperature set range
Shell material
VICUK102
Description
2 W
85-250 Vac, 50/60 Hz
5 ℃ -35 ℃
20 ℃ -45 ℃
ABS + PC
1