Airwell AW-WHPMA18-H93, Installation Manual

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Room thermostat type1(RT1)(High voltage): “POWER IN” provide the working voltage to the RT, doesn’t provide the voltage to the
RT connector directly. Port “15 L1” provide the 220V voltage to the RT connector. Port “15 L1” connect from the unit main power
supply port L of 1- phase power supply, L2 port of 3-phase power supply.
Room thermostat type2(RT2)(Low voltage): “POWER IN” provide the working voltage to the RT.
Method B
RT provide the switch signal to unit. user interface FOR SERVICEMAN set ROOM THERMOSTAT and MODE SETTING to
YES
：
Method A
RT can control heating and cooling individually, like the controller for 4-pipe FCU. When the hydraulic module is connected with
the external temperature controller, user interface FOR SERVICEMAN set THERMOSTAT and ROOM MODE SETTING to
YES
：
A.1 When unit detect voltage is 230VAC between C and N ,the unit operates in the cooling mode.
A.2 When unit detect voltage is 230VAC between H and N, the unit operates in the heating mode.
A.3 When unit detect voltage is 0VAC for both side(C-N, H-N) the unit stop working for space heating or cooling.
A.4 When unit detect voltage is 230VAC for both side(C-N, H-N) the unit working in cooling mode.
There are three methods for connecting the thermostat cable (as described in the picture above) and it depends on the application.
Voltage
Maximum running current(A)
Wiring size(mm 2 )
220-240VAC
0.2
0.75
There are two optional connect method depend
on the room thermostat type.
NOTE
2) For room thermostat
Method B
RT1
COOL
POWER
IN
HEAT
15
C
H
4
3
L1
15
C
H
4
3
L1
Method A
RT1
POWER
IN
Method C
15
C
H
4
3
L1
RT1
POWER IN
RT1
POWER IN
Method B
RT2
COOL
POWER
IN
HEAT
HT CL COM HT CL COM HT CL COM
Method A
RT2
POWER
IN
Method C
RT1
POWER IN
RT1
POWER IN
a. type 1(RT1) (High voltage)
b. type 2(RT1) (Low voltage): in main control board of hydraulic module CN31
POWER SUPPLY
3-phase
HEAT
RT
N
COOL
TO CONTROL PCB
H
3
C
4
L1
L1 L2 L3 N L1 L2 L3 N