Gas high-pressure overload protection (Gas pressure switch MAX)
dreizler A 3001 E - 18.12.2015 | A 2031 - 1.09 | EN - 23.10.2009
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39.2 Configuring the gas pressure switch MAX
The gas pressure switch MAX is designed to monitor maximum gas pressure and must activate an unal-
terable trouble shut-off if:
1) Heat capacity surpasses 1.15x of thermal output, or
2) Pressure in the burner head surpasses 1.3x of nominal supply pressure at the burner head.
Check settings for gas pressure switch MAX on-site and adjust to local requirements.
Switching function:
1) With the automatic firing sequence control LME 39..., the gas pressure switch MAX disconnects the
valves fom the sequence control
Error message: Trouble shut-off due to flame interruption
2) With the automatic firing sequence control ORBIC, the gas pressure switch MAX interrupts the safety
chain.
Error message: 50
3) In oxygen burners with Etamatic, the gas pressure switch MAX is set to an Etamatic input.
Error message: Gas pressure too high
NOTICE:
The gas pressure switch MAX locks automatically, and must be unlocked manually on the gas pressure
switch.
Burner type
Type GDW
Factory pre-settings
Kromschröder
Dungs
121 - 1001
DG 50 H3
ÜB 150 A4
18 - 27mbar
1501 - 5001.1
DG 150 H3
ÜB 150 A4
27 - 60mbar
5001.2 - 5001.4
DG 150 H3
ÜB 150 A4
60 - 87mbar
10001.1 - 10003.4
DG 150 H3
ÜB 150 A4
87 - 150mbar
10003.5
DG 500 H3
ÜB 500 A4
180mbar
