Purging The Gas Line; Checking The Ventilation And Extract Air Apertures And The Flue Connection; Preparing The Heating System For Operation - Buderus Logano plus GB402 Installation And Maintenance Instructions Manual

7.5

Purging the gas line

B Undo the threaded plug on the test nipple for gas
supply pressure and venting by two turns and affix the
hose.
B Slowly open the gas tap.
B Flare off escaping gas via a hydraulic seal. Remove the
hose when no more air is expelled, and tighten the
threaded plug.
B Close the gas tap.
Fig. 28 Purging the gas line
1 Test nipple for measuring the gas supply pressure and for
venting
Logano plus GB402 - Subject to technical modifications!
Commissioning the heating system
7.6 Checking the ventilation and extract
air apertures and the flue
connection
B Check whether the apertures for ventilation and extract
air comply with locally applicable regulations or those
of your gas supply utility. Have any faults removed
immediately.
DANGER: Risk to life through poisoning!
An insufficient supply of air can result in
dangerous escape of flue gas.
B Never block ventilation and extract air
apertures or reduce their size.
B The boiler must not be operated, unless
you immediately remedy the fault.
B Inform the system operator in writing of the
problem and associated risk.
B Check that the flue connection complies with all
current regulations (
B Have any faults removed immediately.
7.7 Preparing the heating system for
operation
B Open the fuel supply at the main shut-off valve and
upstream of the gas valve.
B Switch on the heating system emergency stop switch
(if installed) and/or insert/set the corresponding
domestic fuse/circuit breaker.
Chapter 6.1, page 18).
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