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Watts WFHC Master H C-Bus slave Manual

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10. Special heat pump inputs wiring
2/ Heat & Cool detection by contact: (“F7” = CtAC)
Open => The system will work in heat mode
Closed => The system will work in Cooling mode
Check the heat pump output before connection.
1/ Heat & Cool detection by sensor: (“F7” = SenS)
The heat & Cool input is used with a sensor to detect the water
temperature in the incoming pipe of the installation, to decide the
working mode. (Must be mounted on the incoming water pipe of
the manifold, with precautions).
Reversible
Heat Pump
A/ Humidity Input if
(Check the “F8” and “F9” parameters)
1/ Humidity detection by NTC sensor:
The NTC sensor is used to control the water temperature in the pipe. If the
temperature in the pipe is too cold the cooling output will be deactivated to
avoid risk of humidity in the house. (Must be mounted on the incoming
water pipe of the manifold with precautions).
2/ Humidity detection by contact sensor (free contact)
The humidity sensor is used to control the water temperature in the pipe.
If condensing is detected on the pipe the cooling output will be
deactivated to avoid risk of humidity in the house.
Open => The installation works in normal way.
Closed => The humidity function will be activated.
WFH-SENSOR
NTC sensor 10k0
at 25°C (ß = 3950)
RF antenna
connection
Heat & Cool Input
(Check the position of the “F7” parameters)
WFH-SENSOR NTC
sensor 10k0
at 25°C (ß = 3950)
B/ External control if
Closed => OFF Mode
Open => The installation works in normal way.
… 11 …


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