22
40180036GB
6.7.2. Differential Air Pressure Switch
DANGER!
The connectors of the differential air pressure switch are under voltage.
Work on the differential air pressure switch may only be performed by specialist staff.
1 Low pressure connection
(suction side of fan)
2 High pressure connection
(pressure side of fan)
The differential air pressure switch controls the differential pressure. If the differential pressure
does not exceed the set value of the switch, burner shuts down. The differential air pressure
switch has to operate before the CO-content in the products of combustion exceeds 1 %. The air
pressure switch has been set at the factory as shown in the table. Depending on the
circumstances, the setting of the switch has to be altered in order to ensure the burner
operation. It must be taken care of, that the above mentioned CO-content will not be exceeded.
Burner
Natural gas
LPG
Set value
(mbar)
Alignment
Set value
(mbar)
Alignment
GP-6.10 P
8,0
left arrow
9,5
left arrow
GP-6.20 P
8,0
left arrow
9,5
left arrow
Adjusting
Adjust at the present nominal burner capacity. Open the protective cover of the differential air
pressure switch. Start the burner. Turn the switch slowly to the maximum, till the burner shuts
down. Turn the switch from this point backwards (to minimum) 1,5 mbar. The max. set point
may, however, not exceed 10 mbar. Replace the protective cover and reset.
Summary of Contents for GP-6.10 P
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