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Start-up procedure
Logano G234X – 6 720 811 235 (2014/05) 5
Fig. 2 Installing/removing the front wall of the boiler
[1] Front wall of boiler
[2] Locking screws
Switching on the gas valve
▶ Turn the gas valve ON/OFF knob ( Fig. 3 [1]) clockwise to the OFF
position. Do not use excessive force.
Fig. 3 Gas valve (OFF position)
[1] ON/OFF knob
▶ Wait five (5) minutes until all residual gas has dissipated.
▶ Finally, check whether there is any smell of gas (including at floor
level).
If there is a gas odor:
▶ STOP! Follow the safety instructions for "Risk of explosion from
escaping gas!" ( page 2).
If you do not smell gas:
▶ Continued to the next step.
▶ Turn gas valve ON/OFF knob [1] counterclockwise to the ON
position. Do not use excessive force.
Fig. 4 Gas valve (ON position)
[1] ON/OFF knob
▶ Replace front wall of boiler ( Fig. 2, page 5).
▶ Open gas shutoff valve.
▶ Turn on electric power to heating system.
▶ Set thermostat to desired room temperature.
If the heating system does not start to operate:
▶ Turn off the gas supply ( chapter 3.2, page 5).
▶ After that, inform a customer service technician or the gas utility
company.
3.2 Turn off the gas supply
▶ Set the room thermostats to the lowest setting.
▶ Shut off the heating system from the power supply.
Fig. 5 ON/OFF switch (OFF position)
▶ Turn off the gas shutoff valve.
▶ Removing the front wall of the boiler ( Fig. 2, page 5).
▶ Turn the gas valve ON/OFF knob ( Fig. 3 [1], page 5) clockwise to
the OFF position. Do not use excessive force.
▶ Replace front panel of boiler.
Flame roll out safety shutoff switch
The boiler is equipped with a flame roll-out switch. If the flue duct in the
boiler is blocked, the flame roll-out switch responds.
If the flue duct is blocked:
▶ Do not try to light the boiler.
▶ Inform a qualified service company.
The vent pipe in the boiler must be checked for blockage and the flame
baffle replaced.
The flame roll-out switch is for one-time use only and may not be reused.
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6 720 806 028-08.1T
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6 720 810 545-02.1T
6 720
806 028-19.1T
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