28
6.
Check that the condensate pipe is
connected correctly to the siphon and
heat exchanger.
7.
Refit cover panel.
8.
Secure control unit back in operating
position.
Designating heating circuits – only for weather-compensated
control units
In the delivered condition, the heating
circuits are designated
"Heating circuit
1"
,
"Heating circuit 2"
and
"Heating
circuit 3"
(if installed).
If the system user prefers, the heating
circuits can be designated differently to
suit the specific system.
Enter names for heating cir-
cuits:
Operating instructions
Checking the gas type
The boiler is equipped with an electronic combustion controller that adjusts the burner
for optimum combustion in accordance with the prevailing gas quality.
■ Consequently, for natural gas there is no adjustment required across the entire
Wobbe index range.
The boiler can be operated in the Wobbe index range 9.5 to 15.2 kWh/m
3
(34.2 to
54.7 MJ/m
3
).
■ Convert the burner for operation with LPG (see "Gas type conversion" on
1.
Determine the gas type and Wobbe
index by asking your local gas supply
utility or LPG supplier.
2.
Convert the burner for operation with
LPG (see page 29).
3.
Record the gas type in the service
report on page 157.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5457 552 GB
Summary of Contents for FS2B
Page 163: ...163 5457 552 GB ...
