Airwell WELLEA MONOBLOC DF A R32 Installationsanleitung Seite 41

2) For room thermostat
a. type 1(RT1) (High voltage)
15 4
3
L1 C
H
HEAT COOL
POWER
IN
RT1
Method A
b. type 2(RT1) (Low voltage): in main control board of hydraulic module CN31
CL COM HT
COOL HEAT
POWER
IN
RT2
Method A
There are two optional connect method depend
on the room thermostat type.
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.
3
H
HEAT
There are three methods for connecting the thermostat cable (as described in the picture above) and it depends on the application.
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.
Method B
RT provide the switch signal to unit. user interface FOR SERVICEMAN set ROOM THERMOSTAT and MODE SETTING to
YES：
15 4
3
L1 C
H
POWER
IN
RT1
Method B
CL COM HT
POWER
IN
RT2
Method B
NOTE
4
C
TO CONTROL PCB
COOL
L1 L1
L1
N
RT
37
15 4
3
L1
H
POWER IN
RT1
Method C
CL COM
POWER IN
RT1
Method C
Voltage
Maximum running current(A)
2
Wiring size(mm )
L2 L2 L3 L3 N N
POWER SUPPLY
3-phase
C
POWER IN
RT1
HT
POWER IN
RT1
220-240VAC
0.2
0.75