R32 ATW Service Manual
52
When hydronic module SW2-2 is in ON position, the unit is controlled by room thermostat. And the
unit can’t run DHW mode.
When “H” signal is connected, the unit will run heating mode, and the default setting temperature is
50
℃
. When “C” signal is connected, the unit will run cooling mode, and the default setting
temperature is 7
℃.
If both signals are connected or disconnected, the unit is OFF.
5. Connection of REMO_CTRL
The REMO_CTRL is used to remotely start and stop the units. It is short-circuited at the factory, and
units use wired controller to start and stop. If it is necessary to use the REMO_CTRL, the short line
should be removed and controlled by the opening and closing switch. Start and stop of the unit (when
switch is closed, the unit is turned on; when switch is disconnected, the unit is stopped).
6. Connection of booster heater
Summary of Contents for FHIF-WHS-120CE3
Page 2: ......
Page 9: ...R32 ATW Service Manual 7 1 2 2 Hydronic module FHIF WHS 120CE3 FHIF WHS 160CE3...
Page 18: ...R32 ATW Service Manual 16 Pic 4 3 Domestic hot water mode operation range...
Page 23: ...R32 ATW Service Manual 21 8 System diagram...
Page 28: ...R32 ATW Service Manual 26 Main PCB 3 Hydronic module Main PCB...
Page 29: ...R32 ATW Service Manual 27 Filter board...
Page 34: ...R32 ATW Service Manual 32 Model FHOF WHS 160CE3 3F...
Page 35: ...R32 ATW Service Manual 33 Single unit installation More than one unit installation Unit mm...
Page 46: ...R32 ATW Service Manual 44 HEATING MODE COOLING MODE...
Page 47: ...R32 ATW Service Manual 45 HEATING MODE WITHOUT COOLING MODE DHW MODE WITHOUT COOLING MODE...
Page 48: ...R32 ATW Service Manual 46 HEATING MODE WITHOUT DHW MODE AND DHW TANK ONLY DHW MODE...
Page 56: ...R32 ATW Service Manual 54 When the unit has error code alarm port has a 220V output...
Page 59: ...R32 ATW Service Manual 57...
