Operating instructions

34
Note
Never twist the supply hose during
assembly. Route the drain hose with-
out any bends and with a constant
fall.
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.
To enter names for heating circuits:
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 qual-
ity.
■ For operation with natural gas no
adjustment is therefore 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
page 35).
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 35).
3. Record the gas type in the report on
page 179.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5772 909 GB