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3I2MG-21 v0 Hydraulic diagram
20
PI
54
19
10
14
12
M
PI
19
13
PS
52
M
51
50
53
46
M
PSH
M 48
47
26
25
23
PSH
PS
PSL
MB-DLE
24
4
M
3
S
S
6.1
6
2
18
15
PS
16
16.1
45
VGD
44
BY BURNER CONSTRUCTOR
BY OTHERS
According to the gas train size and the burner type, MB-DLE
safety valves are supplied. In this case, the item 42 is inte-
grated in the valves. See the following drawing.
oil inlet
1
oil outlet
combustion air
gas inlet
42
40
41
LEGEND
POS OIL TRAIN
1
Filter
2
Flexible hose
3
Pump and pressure governor
4
Electrical motor
6
Solenoid valve
6.1
Solenoid valve
10
Oil distributor
12
Pressure gauge
13
Pressure governor
15
Pressure switch
16
One-way valve
16.1 One-way valve
18
Flexible hose
19
Manual valve
20
Pressure gauge
MAIN GAS TRAIN
23
Pressure switch - PGMIN
24
Safety valve with built in gas governor
25
Proving system pressure switch - PGCP
26
Pressure switch - PGMAX
40
Manual valve
41
Bellows unit
42
Filter
44
Safety valve with built in gas governor
45
Proving system pressure switch - PGMIN - LT
46
Pressure switch - PGMAX
47
Butterfly valve
51
Actuator
COMBUSTION AIR TRAIN
50
Air damper
51
Actuator
52
Pressure switch - PA
53
Draught fan with electromotor
54
Burner
Note: The following POS are optional: 19, 20, 40, 41, 46
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