Purging The Gas Supply Pipe - Buderus Logano GE434 Maintenance Instructions Manual

6 Heating system start-up
SYSTEM DAMAGE
through short circuits.
! Cover areas at risk before searching for
CAUTION!
leaks.
! Never apply leak detector spray to
cableways, plugs or electrical leads.
Never let any spray drop down onto
such areas.
! If necessary, disconnect your heating system from
the mains electricity supply.
! Check the new pipe section, incl. the immediate seal
at the gas train for external leaks. The test pressure
on the gas train inlet must be no higher than
150 mbar.

6.1.4 Purging the gas supply pipe

Carry out the following steps on the l.h. and the r.h. gas
burner.
! Release the plug on the test port for gas supply
pressure and venting (Fig. 5, Item 1) on the gas train
by two turns, and connect the hose.
! Slowly open the mains gas shut-off valve.
! Purge the gas supply pipe.
We reserve the right to make any changes due to technical modifications.
Commissioning and maintenance instructions Logano GE434 Gas-fired special boiler • Issue 02/2003
20
1
Fig. 5 Purging the gas supply pipe
Item 1: Test port for gas supply pressure and venting
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de