Electrical connection diagram, standard HWD unit with valve for main coil
Electrical connection diagram, standard HWD unit with auxiliary water coil, valves and humidifier
6
KA1
YV1
7
0
4
6
IS1
C
ST
PTH2
PTH2
Room thermostat
QF2
Internal unit protection switch
R1
Heater coil
IS1
On/off switch
QF5
Humidifier protection switch
RD
Alarm indicator light
IS2
Summer/winter selector
10
English 07/13
6
YV1
7
0
4
I S1
C
ST
HWD E L EC TR ICAL B OARD
5
7
8
9
10
5
8
9
3
2
1
IS3
IS2
IS4
PE
QF4
Heater coil protection switch
FU1
Fuse
IS3
Automatic/manual selector
YV1
Main coil valve
KIT REC Electronic condensing control
IS4
Fan speed selector
KA1
Relay for humidifier/purifier control
HWD ELECTRICAL BOARD
5
7
8
9
10
6
5
8
9
3
2
1
I S 3
IS2
I S 4
PTH2
PE
HUMIDIFIE R
ELECTRIC A L BOARD
U N
U N
1 2
3 4
KA1
2
1
3
B1
QF2
QF5
QF1
U N
U N
QF2
U
N
HOT WATER
HEAT EXCANGER
RD
YV2
MA X LOAD FOR
E XIT N 5 =3 A - 2 3 0V
ST
Temperature sensor
QF1
Assembly protection switch
PR
Electrical heater reset button
KA2
Heater coil auxiliary relay
B1
Humidistat
QF6
Purifier protection switch
PURIFIER
1 2
KA1
QF6
HWD