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

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Installation and operating instruction
Gas burner WG20…/1-C LN
3 Product description
83240802 1/2020-01 La
14-96
3.3.4 Program sequence
Pre-purge
At heat demand, the burner motor starts after the initialisation time (T
I
) has elapsed
and the gas pressure switch has been activated.
The air pressure switch is activated during the pre-purge phase (T
V
).
Ignition
Pre-ignition time (T
VZ
) starts before the end of the pre-purge time (T
V
).
Ignition starts.
Fuel release
Following pre-ignition time (T
VZ
) the double gas valve (K32) opens and releases the
fuel.
Safety time
With fuel release, safety time (T
S
) and post-ignition time (T
NZ
) start.
The flame signal must be present within the safety time (T
S
).
Operation
The combustion manager monitors the flame signal via the ionisation electrode.
Post-purge
If there is no longer a heat demand, the double gas valve (K32) closes and stops
the fuel supply.
Post-purge time (T
N
) begins.
Following the post-purge time (T
N
) the burner motor switches off.