BURNER GAS CONTROLS & ADJUSTMENTS
SINGLE STAGE (ON/OFF) USING PILOT GAS - MULTIBLOC MB-DLE 405-412 B07
Includes gas pressure governor, safety, main and start gas valves.
SINGLE STAGE (ON/OFF) MAIN GAS IGNITION - MULTIBLOC MB-DLE 405-412 B01
Contains gas pressure governor, safety, and main gas valves.
ADJUSTMENTS
A
Governor adjustment (main and pilot). Turn clockwise to increase
pressure. Range 4-20 mbar.
B
Start gas rate (B07 valve only). Turn anticlockwise to increase
and clockwise to decrease rate.
C
Main valve. Fast initial lift adjuster.
D
Main gas adjustment. Slacken cheesehead screw, and turn the
fluted knob anticlockwise to open, clockwise to close.
E
Low gas pressure switch (Optional).
F
Upstream testpoint.
G
Downstream testpoint.
TWO STAGE (HIGH/LOW) USING PILOT GAS - MULTBLOC MB-ZRDLE 405-412 B07
Includes gas pressure governor, safety, two position main and pilot valves.
TWO STAGE (ON/OFF) USING MAIN GAS IGNITION - MULTIBLOC MB-ZRDLE 405-412 B01
Includes gas pressure governor, safety, two main and start gas valves.
ADJUSTMENTS
A
Governor adjustment for main flame. Turn clockwise to increase
pressure. Range 3 - 20 mbar.
B
Start gas rate (B07 valve only). Turn anticlockwise to increase and
clockwise to decrease rate.
C
Main valve - first and second stage - fast initial lift adjuster.
D
High flame throughput adjustment. Slacken off locking screw, turn
anticlockwise to increase and clockwise to decrease rate.
E
Low flame throughput adjustment, as in D.
F
Low pressure gas switch (Optional).
G
Upstream testpoint.
H
Downstream testpoint.
GAS MULTIBLOCK SCHEMATIC
A
D
E
F
B
G
C
A
E
C
B
H
D
G
F
1
3
V1
V2
V3
5
2
4
V1 - Valve 1
V2 - Valve 2 - Single Stage (MB-D) or Two Stage(MB-Z)
V3 - Pilot Valve (B07 Only)
1 - Pressure Switch (Optional)
2 - Regulator
3 - Restrictor
4 - Filter
5 - Inlet connection
SG10070501
