Installation and operating instruction
Gas burner WG10…/0-D ZM-LN
3 Product description
83300902 1/2019-02 La
14-112
3.3.4 Program sequence
The operating phases for commissioning the burner are shown on the display.
Phase
Function
TEST
After the power supply has been switched on the combustion manager performs a self-test.
G L
At heat demand, the actuators for the air damper and the gas butterfly valve drive to the reference
point.
1
The combustion manager monitors for extraneous light.
2
The air damper actuators drives to pre-purge (operating point P
9
). The gas butterfly valve actuator
drives to ignition position (operating point P
0
).
3
Pre-purge is initiated. The air pressure switch reacts.
4
Pre-purge. The remaining pre-purge time is displayed.
5
The air damper actuator drives to ignition position (operating point P
0
).
6
Gas valve 1 opens. The gas pressure switch reacts. Ignition starts.
7
Gas valve 2 opens. The fuel is released. The safety time begins. The display shows symbol
.
8
Flame stabilisation.
9
The actuators for the air damper and gas butterfly valve drive to partial load.
10
The burner is in operation. Load control is activated.
11
If heat demand is no longer available, the actuators for air damper and gas butterfly valve drive to par-
tial load.
Valve proving starts.
1. Test phase (function sequence for valve proving valve 1):
Valve 1 closes,
valve 2 closes after a delay,
the gas escapes and the pressure between valve 1 and valve 2 reduces.
12
Test time valve 1.
13
2. Test phase (function sequence for valve proving valve 2):
Valve 1 opens, valve 2 remains closed,
pressure between valve 1 and valve 2 increases,
valve 1 closes again.
14
Test time valve 2.
15
Following the post-purge phase the burner motor switches off. The air damper and gas butterfly valve
actuators close.
OFF
Standby, no heat demand.
