Danfoss Basic Plus Data sheet
Data Sheet
Basic Plus² Room Thermostat
Floor Heating with Modbus Communication
Application
Ordering
Accessories
Wiring connections
WT-DM room thermostats are used for room temperature control in water-based floor heating systems.
By controlling room temperature in accordance with the temperature desired by the user, the room thermostats provide optimal energy savings while upholding optimal thermal comfort in the room.
Functions
•Modern design with white backlight.
•AWAY function.
•Child safety lock.
•3 selectable temperature control modes:
1.Room temp. control (default).
2.Room with floor temp. limit control.
3.Floor temp. control.
•2 selectable floor temperature control modes:
1.High
2.Low
•Max. and min. limit settings for room and floor temperature.
•Optional room temperature display when power is OFF (default setting: no display).
•Floor sensor terminals. For thermostats equipped with LCD display, enabling control of maximum floor temperature and reducing the risk of overheated and damaged floors (for specific maximum floor temperatures, refer to the recommendations from floor suppliers).
•Frost protection mode. Use this feature instead of turning the thermostat OFF completely to protect against damages due to low temperatures. The room temperature will be maintained around 5 °C.
•Temperature calibration. This function allows you to change the temperature setpoint of the room thermostat, to compensate for a possible temperature deviation between the room thermostat and, for example, the centre of the room.
•Compatible with Smart House System or BMS with RS485 interface. It is possible to realize remote central control.
Product |
Type |
Supply voltage |
Output voltage |
Code no. |
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Basic Plus2 WT-DM Display |
WT-DM |
230 V AC |
230 V AC |
088U0627 |
Product |
Type |
Code no. |
BasicPlus floor sensor |
FH-CWF |
088U0610 |
S2 |
Floor Sensor |
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S1 |
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B- |
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A+ |
Modbus Communication |
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N |
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NC |
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NO |
230 V ~ |
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L |
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© Danfoss | FEC | 2021.06 |
AI195086470199en-010102 | 1 |
Technical specifications
Dimensions
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Feature |
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WT-DM |
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Type |
LCD display with push buttons |
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Operating room temperature |
Off, 5 °C to 35 °C |
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Operating floor temperature |
Off, 20 °C to 45 °C |
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Ambient temperature |
−10 °C to +60 °C |
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Fault indication |
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Yes |
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Hysteresis |
1 °C, symmetrical around the setpoint temperature |
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LCD backlight |
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Yes, white |
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Max. load, inductive |
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< 1 A |
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Max. load, resistive |
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< 3 A |
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Temperature calibration |
Yes (+/− 10 °C) |
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Power consumption |
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2 W |
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Power supply |
85-250 V AC, 50/60 Hz |
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Sensor, room |
NTC 100K, accuracy: ±1 % |
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Sensor, floor |
Optional (FH-CWF) |
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Communication protocol |
Modbus RTU |
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Communication interface |
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RS485 |
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Shell material |
ABS, non-inflammable |
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IP class |
30 |
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ErP class |
ErP |
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1 (1%) |
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Approval |
CE marking, EN 60730 |
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Colour |
White RAL9010/Dark Grey RAL7024 |
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Dimensions |
86 × 86 × 16 mm |
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2 | © Danfoss | FEC | 2021.06 |
AI195086470199en-010102 |
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