Installation and operating instruction
Gas burner WG20…/1-C LN
3 Product description
83240802 1/2020-01 La
12-96
3.3.2 Gas supply
Gas isolating valve 1
The gas isolating valve opens and shuts off the gas supply.
Multifunction assembly8
The multifunction assembly contains:
Gas filter 2 The gas filter protects the subsequent valve train
components from foreign particles.
Double gas valve 4 The double gas valve opens and shuts off the gas
supply.
Pressure regulator 3 The pressure regulator reduces the connection
pressure and ensures a constant setting pressure.
Gas butterfly valve 5
The gas butterfly valve regulates the gas quantity depending on the rating required.
The air/gas ratio is adapted via mechanical compound to the air damper setting.
Low gas pressure switch 7
If the gas connection pressure is lower than the value set, the low gas pressure
switch initiates a low gas programme at the combustion manager.
In the low gas programme the combustion manager interrupts burner start and
burner operation. Following a low gas waiting time of 10 minutes an automatic re-
start is initiated.
High gas pressure switch 6 (optional)
The high gas pressure switch monitors the setting pressure. If the setting pressure
exceeds the value set, the combustion manager initiates a controlled shutdown.
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