Watts WFHC 06Z 02 HC RF 24 User Manual page 8

4.5 Humidity detection input
The product has a humidity detection input.
2 possible types of signal:
Water temperature sensor (CTN 10kΩ): Require
•
BT-D03 RF RH thermostat
• A humidity contact sensor
1. Humidity contact sensor
Format of the signal
The input is a free contact
No Humidity
Humidity detected
In cooling mode, when humidity is detected, the
controller:
Stops the pump signal if DIP7=ON (Safety
•
approach)
Closes all actuators if DIP7=ON (Safety
•
approach)
• Requests the WFC HCM RF to enable the
dehumidifier
If the controller is a sub controller, the cooling demand
is not sent to the main controller
2. Water temperature sensor.
For each zone, the controller computes the dew point
based on the ambient temperature and relative
humidity sent by each thermostat. When the water
temperature reaches the dew point in one zone, the
controller
Closes the actuator of the zone if DIP7=ON
•
Enables remote dehumidifier
•
Requests the WFC HCM RF to enable the
•
dehumidifier
If the controller is a sub controller, the cooling demand
of the zone is not sent to the main controller
4.6 NC/NO actuators
Connect one NC or NO actuator per connector
230V actuators for WFHC 06Z 02 HC RF
•
230 and WFHC 10Z 02 HC RF 230
• 24V actuators for WFHC 06Z 02 HC RF
24 and WFHC 10Z 02 HC RF 24
The type of actuators is defined by DIP2.
It is necessary to use the same type for all actuators.
Opened contact
Closed contact
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