Weishaupt WG20-/1-C LN Series, Руководство пользователя

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Installation and operating instruction
Gas burner WG20…/1-C LN
7 Commissioning
83240802 1/2020-01 La
44-96
7.3 Set pressure switches
7.3.1 Set gas pressure switch
Set low gas pressure switch
The switch point must be checked and if necessary adjusted during commission-
ing.
Connect pressure measuring device to test point 1 of the gas pressure switch.
Start the burner.
Slowly close gas isolating valve until either:
the O
2
content in the flue gas increases to above 7 %,
the flame stability considerably worsens,
the CO content increases,
or the gas flow pressure drops to 50 %.
Determine gas pressure.
Slowly open gas isolating valve.
Set the pressure determined as switch point at the setting cam
2
.
Check switch point
Restart the burner.
Slowly close gas isolating valve.
If the low gas program starts, the gas pressure switch has been set correctly.
If a lockout occurs or if the combustion reaches a critical condition, the low gas
pressure switch reacts too late.
If lockout occurs:
Increase switch point at setting cam 2 .
Slowly open gas isolating valve.
Re-check switch point.
70
50
30
20
90
110
130
150
1
2
Set (optional) high gas pressure switch
Set high gas pressure switch to 1.3 × P
Gas full load
(flow pressure at full load).