10
Setting the time and date (if required)
During commissioning, or after pro-
longed time out of use, the time and date
need to be reset.
Extended menu:
1.
å
2. "Settings"
3. "Time / Date"
4.
Set current time and date.
Designating the heating circuits
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 operate 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. Only possible on appliances with
26 and 35 kW.
Convert the burner for operation with
LPG (see page 12).
3.
Record the gas type in the report on
page 138.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 860 GB
Summary of Contents for CU3A
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