Turn Off The Gas Supply; Shutdown; Normal Shutdown Of The Heating System; Shutting Down The Heating System In Emergencies - Buderus Logano G334X User Manual

4

Shutdown

3.3

Turn off the gas supply

1. Set the room thermostats to the lowest setting.
2. Disconnect the heating system from the power supply.
Fig. 5 ON/OFF switch (OFF position)
3. Close the gas shutoff valve.
4. Removing the front wall of the boiler ( Fig. 2, page 5).
5. Turn the gas valve ON/OFF knob ( Fig. 3 [1], page 5) clockwise to
the OFF position. Do not use excessive force.
6. Replace front panel of boiler.
Flame roll-out safety shutoff switch
The boiler is equipped with a flame roll-out switch. The flame roll-out
switch is actuated if the flue duct in the boiler is blocked.
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.
6
4
4.1
▶ Place the ON/OFF switch in the OFF position ( Fig. 5). This shuts
6 720 806 028-19.1T
▶ Turn the gas valve ON/OFF knob clockwise to the OFF position
▶ Shut off the fuel supply at the main fuel shutoff valve.
For further shutdown procedure  Documents for the AquaSmart
4.2
▶ Have a heating contractor explain what to do in an emergency
▶ Never put yourself at risk of fatal injury.
▶ Close the main shutoff valve or gas shutoff valve.
▶ Isolate the heating system from the electrical power supply via the
Shutdown

Normal shutdown of the heating system

off power to the boiler and all of its components (e. g. burner,
temperature controller).
CAUTION: Risk of system damage due to freezing!
The heating system can freeze up if it does not operate
for an extended period of time and is exposed to
temperatures below freezing (e. g. during a power
failure, if the power has been switched off, through lack
of gas supply, boiler fault).
▶ Protect the heating system against frost when
temperatures below freezing are expected.
▶ With the controls switched OFF, drain the water from
the boiler, the DHW tank and the pipework of the
heating system and, as far as possible, from the DHW
pipework at the lowest point.
( Fig. 3, page 5).

Shutting down the heating system in emergencies

(e. g. a fire).
Switch OFF the heating system via the emergency
shutoff switch or the building circuit breaker/fuse only in
emergencies.
Your own safety is paramount.
emergency shutoff switch or the corresponding building fuse.
Logano G334X – 6 720 811 239 (2014/05)
TM
.