HTW ECO-THERMAL PLUS -V18WD2RN8PLUS Manual De Usuario E Instalacion página 119

Port provide the control signal to the load.Two kind of control signal port:
Type 1：Dry connector without voltage.
Type 2：Port provide the signal with 220V voltage. If the current of load is <0.2A, load can connect to the port directly.
If the current of load is ≥0.2A, the AC contactor is required to connected for the load.
30 26
Type 1:
R1
R2
Load
FUSE
L N
Running
Control signal port of hydraulic model contains terminals for solar energy, remote alarm, 3-way valve, pump,and external heating
source, etc.
The parts wiring is illustrated below:
1) For solar energy kit input signal
1 2
SL1 SL2
CONNECT TO SOLAR
PUMP STATION
230VAC INPUT
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 CN35
CL COM HT
COOL HEAT
POWER
IN
RT2
Method A
NOTE
There are two optional connect method depend
on the room thermostat type.
Power supply
Type 2:
7 5 3 1
8 6 4
15 4
3
L1 C
H
POWER
IN
RT1
Method B
CL COM HT
POWER
IN
RT2
Method B
36
13 16
TBH N
A1
A2
2
Contactor
Voltage
Maximum running current(A)
Wiring size(mm )
2
15 4
3
L1 C
H
POWER IN
RT1
Method C
CL COM HT
POWER IN
RT1
Method C
Voltage
Maximum running current(A)
Wiring size(mm )
2
220-240VAC
0.2
0.75
POWER IN
RT1
POWER IN
RT1
220-240VAC
0.2
0.75