Promatic WDC Series, Manual

Page: 59 / 176

Service setting manual 59
ENG
CONNECTION OF TEMPERATURE SENSORS
Immersion sensor
Immersion sensor is intended to be installed into immersion tube of boiler, heat accumulator,
d. h. w. storage tank, solar collectors or elsewhere. Make sure that the sensor rests against
the tube walls. Secure the sensor with a fastener or a screw.
Surface sensor
Install the surface sensor onto the stand-pipe above the bypass pump or after the mixing
valve. Clean the selected spot on the pipe first. Place the sensor onto the cleaned spot and
secure it with the enclosed spring clip.
Outdoor temperature sensor
Install the outdoor temperature sensor onto the facade facing north or north-west, approxi-
mately 2m above ground. Installation above the windows or vents on the facade facing south
is not allowed.
First remove the protective cover and unscrew two screws from the cover. Use the enclosed
wall screw to attach the sensor to the envisaged spot. Introduce the cable into the sensor
through a feedthrough from the bottom side and connect the sensor.
Room temperature sensor
Install the room temperature sensor onto an indoor wall of a living area, which is not sunlit
and distant from heat and draft sources. Remove the cover and screw the base onto the
selected spot approximately 1.5 metres above ground. You can also install it onto an electri-
cal case or directly onto a wall. A 2-wire signal cable is required for electrical connection. If
there are thermostatic valves installed onto radiators in the room, where room unit is locat-
ed, the thermostatic valves have to be fully opened. If room sensor is connected to T1 termi-
nal, the required parameter setting is S1.4=1. If room sensor is connected to T8 terminal, the
required parameter setting is S1.5=1.
If temperature sensor that is not required in the selected scheme is connected to
T1 or T8 fastener, you must define its operation mode with parameter S1.4 for
T1 sensor and with parameter S1.5 for T8 sensor.