HTW A60CGN8PLUS Manuel De L'utilisateur page 119

Voltage
Maximum running current(A)
Wiring size(mm 2 )
Control port signal type
a) Procedure
Connect the cable to the appropriate terminals as
shown in the picture.
Fix the cable reliably.
6) For room thermostat:
Room thermostat type 1(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.
Room thermostat type 2(Low voltage) : "POWER IN" provide the
working voltage to the RT
NOTE
There are two optional connect method depend on
the room thermostat type.
Room thermostat type 1 (High voltage):
3 4
15
CN11
3 15 4
HEAT(H)
L1 COOL(C)
（Mode set control）
POWER
IN
RT1
3
15
CN11
HEAT(H) L1
POWER
IN
RT1
CN5
220-240VAC
0.2
0.75
Type 2
25 26 27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN7 CN30
Method A
25 26 27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN7 CN30
Method B
（One zone control）
3 4
15
S1
CN4
L1
HEAT(H)
POWER IN
RT1
zone1
Voltage
Maximum running current(A)
Wiring size(mm 2 )
There are three methods for connecting the thermostat cable
(as described in the picture above) and it depends on the
application.
（Mode set control）
Method A
RT can control heating and cooling individually, like the
controller for 4-pipe FCU. When the indoor unit is connected
with the external temperature controller, user interface FOR
SERVICEMAN set ROOM THERMOSTAT to MODE SET：
A.1 When unit detect voltage is 230VAC between C and L1 ,the
unit operates in the cooling mode.
A.2 When unit detect voltage is 230VAC between H and L1, the
unit operates in the heating mode.
A.3 When unit detect voltage is 0VAC for both side(C-L1, H-L1)
the unit stop working for space heating or cooling.
A.4 When unit detect voltage is 230VAC for both side(C-L1,
H-L1) the unit working in cooling mode.
（One zone control）
Method B
RT provide the switch signal to unit. User interface FOR
SERVICEMAN set ROOM THERMOSTAT to ONE ZONE：
B.1 When unit detect voltage is 230VAC between H and L1, unit
turns on.
B.2 When unit detect voltage is 0VAC between H and L1, unit
turns off.
（Double zone control）
Method C
Indoor unit is connected with two room thermostat, while user
interface FOR SERVICEMAN set ROOM THERMOSTAT to
DOUBLE ZONE:
C.1 When unit detect voltage is 230VAC between H and L1
,zone1 turns on.When unit detect voltage is 0VAC between H
and L1, zone1 turns off.
C.2 When unit detect voltage is 230VAC between C and L1,
zone2 turns on according to climate temp curve. When unit
detect voltage is 0V between C and L1, zone2 turns off.
C.3 When H-L1 and C-L1 are detected as 0VAC, unit turns off.
C.4 when H-L1 and C-L1 are detected as 230VAC, both zone1
and zone2 turn on.
38
25 26 27 28
1 2 3 4 5
29 30 31 32
6 7 8 9 10
CN11 CN7 CN30
Method C
（Double zone control）
COOL(C)
POWER IN
RT2
zone2
220-240VAC
0.2
0.75