Converting the appliance to different gas types
|
51
6 720 644 143 (2010/09)
B
Remove the gas throttle seat with a screw driver as
shown in Fig. 49.
Fig. 49
B
Adjust the gas flow throttle to set the CO
2
or O
2
level
for maximum rated output according to the table.
Fig. 50
B
Briefly press the central heating boost button .
The display shows the flow temperature in alternation
with
=
minimum rated heat output
.
B
Measure the CO
2
or O
2
level.
B
Remove the sealed brass screw from gas valve
adjusting screw and set CO
2
or O
2
level for minimum
rated heat output.
Fig. 51
B
Re-check settings at maximum and minimum rated
output and re-adjust if necessary.
B
Repeatedly press the central heating boost button
until the light goes out.
The display will show the CH flow temperature again.
B
Record the CO
2
or O
2
levels in the commissioning log.
B
Remove flue gas probe from flue gas testing point and
refit sealing plug.
B
Seal the gas valve and gas throttle.
max. rated heat
output
min. rated
heat output
Gas Type
CO
2
O
2
CO
2
O
2
NG (23)
9.6 %
3,6 %
9.0 %
4,7 %
LPG (Propane)
10.8 %
4.6 %
10.2%
5.5 %
LPG (Butane)
12.2 %
2.8 %
11.5 %
3.8 %
Table 20
1 .
2 .
6 7 2 0 6 1 2 6 5 9 - 3 7 . 1 R
6 7 2 0 6 1 2 6 5 9 - 3 8 . 1 R
6 720 614 090-22.1O
1
2
