
Heating system start-up
6
25
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
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
6.1.8 Checking the mains gas pressure
!
Release the plug on the test port for gas supply
pressure and venting (Fig. 9,
) on the gas train
by two turns.
!
Push the test hose of the U-tube pressure gauge
onto the test nipple (Fig. 9,
).
!
Check the gas supply pressure when the burner
operates. Record the value in the commissioning
report.
–
Contact your local gas supplier if insufficient gas
supply pressure (Table 13, page 26) is entering your
system.
–
Install a secondary gas pressure regulator upstream
of the gas train, if the gas supply pressure is too high.
!
Pull the test hose off again.
!
Carefully tighten the plug on the test port for gas
supply pressure and venting (Fig. 9,
).
PLEASE NOTE
!
Ensure that both gas burners are
operating for the following checks.
Fig. 9
Checking the mains gas pressure
Item 1:
Test port for gas supply pressure and venting
1
Содержание Logano GE434
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