Start The Boiler - OERTLI PK 350 User Manual

5. Start the boiler

5 Start the boiler
Check the water pressure in the installation. The hydraulic
pressure must be a minimum of 0.8 bars. Adjust the pressure if
necessary, avoiding a sudden influx of cold water into the boiler
when it is hot.
0.8...1.5 bar
Switch on the appliance
Open the valves on the heating circuit
Open the fuel supply
Provoke a heating request: see below (depending on the type
of control panel).
10
S3 control panel
Set the boiler thermostats 3 to the desired position. The 2nd
stage thermostat must be set to a value at least 5°C lower than
the 1st stage thermostat.
If there is no control unit, we advise you never to set the
boiler thermostat below mark 4 (approx. 40°C) in order to
avoid the risk of combustion products condensing on the
walls of the boiler.
Control unit in boiler room electrical cabinet:
- See the instructions supplied with the control unit and any remote
control unit used.
Set main On/Off switch 1 to I.
The boiler starts to operate.
PK 350 - PK 450 - PK 550
3 3
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