10
It is important that you always refer to
the Boiler Manufacturers Instructions
concerning electrical wiring before using
the information contained in this leaflet�
In some cases the Boiler Manufacturers
Instructions will contain information
regarding removal of certain link wires
and will always indicate the fuse rating
for the main electrical supply�
Important note:
Combination Boiler Model
Chaffoteux Celtix 2�20 OFF
N
PH
7
6
FIM Leblanc GVM 420
see special circuit
Glowworm Fuelsaver
N
L
8
7
Ravenheat
N
L
C
D
Saunier Duval SD 620 F
N
L
2
3
Saunier Duval SD 123C
N
L
2
1
Saunier Duval SD 235C
N
L
2
1
Saunier Duval SD 135C
N
L
2
1
N
D
S
room stat
D = demand
S = satisfy
QM1 Terminals
220-240V AC
50 Hz
FUSED
SUPPLY
L
1 2 3
4
