Intergas Heating Ltd
45
13
ELECTRICAL CONNECTIONS
13.1
Wiring diagram
A
Earth connections heat-exchanger
F
Fuse (3,15AT)
P1
External CH pump
V
Fan
B
Spark plug cover
G
Gas valve + ignition unit
S1
Flow sensor
C
Boiler controller
I
Ionisation-/ ignition probe
S2
Return sensor
E
Earth connections boiler controller
M
Main voltage
S7
CH water pressure sensor
Connector X4
24V=
6-7
On/off room thermostat
(0,1A-24Vdc)
and/or frost thermostat (remove connection 6-7)
8-9
Outdoor sensor
(12k ohm / 25°C)
11-12
OpenTherm thermostat (remove connection 6-7)
Connector X2
230V
~
1-3
Room thermostat 230 AC (1=Switch live, 3=Live(fused)
1-3
Frost thermostat 230 AC (1=Switch live, 3=Live(fused)
2-4
Mains
(2=Live (brown), 4=Neutral (blue))
7-8
External CH-pump
(8=L (brown), 7=N (blue)
Connector X5
Computer interface
13.2
NTC resistances
NTC 12kOhm
T [°C]
R[ohm]
T [°C]
R[ohm]
T [°C]
R[ohm]
-15
76020
25
12000
65
2752
-10
58880
30
9805
70
2337
-5
45950
35
8055
75
1994
0
36130
40
6653
80
1707
5
28600
45
5522
85
1467
10
22800
50
4609
90
1266
15
18300
55
3863
95
1096
20
14770
60
3253
100
952
3,15AT
