Installation manual

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8 Draining of the appliance
8.1 Heating circuit
Turn on the drain cock (1) provided at
the system low point.
Provide an air intake by opening a
radiator bleed screw.
1
In order to drain only the water in the
boiler, first shut off the heating flow and
return isolating valves.
8.2 Domestic Hot Water circuit (*)
Turn off the water cock of the system.
Create an air intake by turning on a
hot water tap or open the DHW safety
valve.
(*) Not required for SB models
9 Gas conversion
For operation with LPG, some adjustments
must be made on the gas valve
First of all remove the front panel.
Connect a CO2 analyser to the flue
elbow.
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3
1
2
Legend
1 Plug
2 Test point
3 Maximum power setting screw.
Take off cap (1) then insert a sampling
tube in the test point (2) in the flue
system.
9.1 Maximum power setting
In domestic hot water with CO2:
Fully open a hot water tap.
Wait for 2 minutes or so, until the CO2
reading has stabilized.
In heating with CO2:
Adjust the boiler on «Burner forcing at
P. max.» using menu COD.8 described
in chapter «Access to the boilers
technical data».
Perform a heating demand.
Wait for 2 minutes or so, until the CO2
reading has stabilized.
9.1.1 Setting from G20 to G31
Turn the screw (3) 2 full turns
clockwise.
Wait for about 2 minutes in order to
read a stabilized CO2 value.
Progressively adjust the setting in order
to obtain the CO2 value in G31 shown
in the chart below.
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