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Instructions for the installer
3.18.3 Gas valve setting
Maximum heating output adjustment
• Make sure that the ambient thermostat (optional), if fitted, is set to ON.
• Select the "heating" mode on the control panel pressing key
n times until symbol
is displayed.
• Start the ‘flue cleaning’ function by keeping
key pressed until symbol
stops flashing. Boiler switches to max. output operation.
• If a gas switching has been made, access the programming page and set the parameter P0-P4-P5-P6-P7-P8 based on the power and on
the gas, as specified in Tab. 10 Limits to be set for TSP parameters and default values in relation to boiler type (TSP0).
• Set flue gas CO2 content by turning the ratio adjuster B (see Fig. 33 Adjusting CO2 value) and ensure that reading falls within the limits of
Tab. 18 Flue CO2 content. Let boiler flue cleaning function on and continue with the next point ”Minimum heating output adjustment" .
Minimum heating output adjustment
• Set boiler min. output operation by keeping CH - button pressed until the value corresponding to fan min. speed for the output and boiler
gas is displayed (refer to Tab. 10 Limits to be set for TSP parameters and default values in relation to boiler type (TSP0).
• Boiler switches to min. output operation.
• Set flue gas CO2 content by turning the offset control C (see Fig. 33 Adjusting CO2 value) and ensure that reading falls within the limits of
Tab. 18 Flue CO2 content.
• Keep key
pressed to end the flue cleaning function.
