98
3064816_201804
E1
E2
AF
SF
EBu
s
GN
D
GN
D
GN
D
GN
D
GN
D
PE
X9:
1
9
230V
F
A
N
FE
+23V
ZH
P
0-10
V
LP
PW
M
+23V
CLR
+3V3
ZH
P
P
W
M
CC
RX
CC
TX
GN
D
ZH
P
GN
D
GN
D
eBus
K
SM
GND
GN
D
wBus
WW
F
VIS TX
GN
D
+5
V
D
FL-
H
K
VIS RX
R
LF
GN
D
+5
V
D
H
K
GN
D
+12
V
D
FL-
W
W
GN
D
KF
GN
D
wBus
8
L1
N
N’
N’
N’
N’
L WW
L HZ
L1’
L1’
L1-ZHP
rt
br
br
sw
gr
br
gr
bl
br
bl
gnge
sw
sw
vi
ge
sw
rt
ge
rt
sw
vi
br
N
L1
N´
L1´
bl
gr
gn
ge
SF
1
2
AF
E1
eBUS
+
-
1
2
a b
L1
ZHP
LP
N
N
L1
Netz
N
L1
Z1
N
L1
A1
N
L1
HCM-2
E2
a b
X10:
1
X8:8
1
X7:
13
1
sw
rt
vi
6
X6:1
X4:1
5
X5:1
X3:1
2
4
1
1
2
9
10
2
eBus
X32
X30
8
1
X34
X33
rt
sw
vi
br
bl
gr
gn
ge
S1
sw
br
or
rt
WLAN
LAN
S1
rt
or
br
sw
X31:
6
1
X1:1
4
+23V
+3V3
eBus
GND
wBus
+5V
X11:1
9
GND
+3V3
eBus
N.C.
wBus
VISTX
CCTX
CCRX
X1:1
16
X2:1
10
VISRX
WOLF
sw
ws
rt
X1:
GBC-E
sw
rt
bl
br
gegn
w
s
sw
rt
bl
gn
br
gn
br
bl
br
bl
PWM
PE
WW
N
H
Z
gn
ge
bn
ws
gn
ge
bn
ws
sw
sw
sw
sw
ge
bl
br
gnge
42. HCM-2 wiring diagram
Internal appliance pump
Boiler water temperature sensor
Flow sensor
W
ater pressure sensor
Return temperature sensor
DHW outlet temperature sensor
ISM7i (optional)
AM/BM-2 contact PCB
ON/OFF switch
Front
panel
Reset
Speed Internal appliance pump