Datasheet

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VDCUC202 © Danfoss 02/2015
Data Sheet
Basic Plus
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– Floor Heating Room Thermostats
Application
All room thermostats are used for room tempera-
ture control in water-based oor 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
Room Thermostat, WT-T (Dial)
By turning the dial to the desired setpoint tem-
perature, optimal thermal comfort in the room is
achieved. In addition to temperature, the thermo-
stat setting scale includes a frost symbol allowing
for minimal energy consumption while avoiding
freezing temperatures in the room.
The thermostat is equipped with diodes, which
display a green light through the front cover while
the thermostat is ON, but without heat demand.
A red light is displayed when the thermostat is ON
and there is heat demand.
Features of Room Thermostats, WT- D (display) and
WT-P (display and programmable):
• Modern design with white backlight.
• AWAY function.
• Child safety lock.
• 3 selectable temperature control modes:
1. Room temp. control (default).
2. Room with oor temp. limit control.
3. Floor temp. control.
• 2 selectable oor temperature control modes:
1. High
2. Low
• Max. and min. limit settings for room and
oor 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 oor temperature and reducing
the risk of overheated and damaged oors (for
specic maximum oor temperatures, refer to
the recommendations from oor suppliers).
• Frost protection mode. Use this feature
instead of turning the thermostat OFF com-
pletely 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.
• Advanced programmable timer. This function
allows you to set a timer-controlled program
for automatic comfort temperature and energy-
saving lower setback temperature when stand-
ard room comfort temperature is not required.
Room Thermostats, WT- DR (display) and WT-PR
(display and programmable)
The thermostats have voltage-free auxiliary SPST
relay for controlling the external equipment, such
as a boiler.
Additional features:
• Programmable 5/2-day feature with 4 time
segments (WT-P & -PR).
• Clock in 12-hour or 24-hour format (WT-P & -PR).
Other functionalities are identical with those
listed for WT-D and WT-P.
WT-T WT-D/WT-DR WT-P/WT-PR