2861
6
GB
4.2
GAS TRAIN (
according to EN 676
)
The gas train is supplied separately, for its installation/adjustment see the enclosed instructions.
GAS TRAIN
MATCHED
BURNER
CONNECTIONS
USE
Model
CODE
INLET
OUTLET
CG 120
3970587
BS2/M
Rp 3/4”
Flange 2
Natural gas and LPG
CG 220
3970588
BS3/M - BS4/M
Rp 3/4”
Flange 3
Natural gas and LPG
V
N
Pw
mbar
Key to lay-out
1
- Electrical connection for pressure switch
2
- Electrical connection for valves
3
- Setting screw for
“Pw”
gas pressure switch
4
- Gas inlet flange
5
-
“ZERO POINT” (N)
setting screw
6
-
“GAS/AIR RATIO” (V)
setting screw
7
- Pressure connection (combustion chamber)
“PF”
8
- Pressure connection (air)
“PL”
9
- Gas outlet flange
Fig. 5
9
4
7
8
6
5
1
2
3
D7035
CONNECTION OF PRESSURE TAPS TO
GAS TRAIN
To connect the taps proceed as follows:
³
Fit the G1/8 connector (supplied with the
burner) to
A
(burner flange).
³
Cut the blue plastic tube supplied with the
burner into two.
³
Connect boiler tap
A
with valve tap
“PF”
and sleeve tap
B
with valve tap
“PL”
using
the previously cut pipes.
P w
mb a r
N
V
D7034
A
B
Fig. 6
P
L
P
F
