03/2013 - Art. Nr. 4200 1032 7200A
10
Operation
MB-VEF gas train
The MBVEF compact gas valve
assembly is a combination of filter, gas/
air ratio regulator, valves and a pressure
switch:
- Screen with 0.8mm mesh
- GWA5 pressure switch
- Servo-pressure control part with
adjustable ratio V, correction of the
zero point offset N and furnace
pressure connection.
- V1 and V2 fast-opening and closing
solenoid valves
Technical data
Input pressure
360 mbar max.
Ambient temperature
-15 to +70°C
Voltage
230 V/ 50 Hz Max.
Absorbed output
50 VA
Protection rating
IP 54
1
Electrical connection of solenoid
valves (DIN 43650)
2
Electrical connection of the
gas pressure switch (DIN 43650)
3
Gas pressure switch
4
Inlet flange
5
Pressure measuring nipple
R1/8, upstream of filter (option)
6
Filter (under the cover)
7
Connection for furnace pressure
release pipe
pF
, R1/8
8
Adjusting screw for
V
ratio
9
Adjusting screw for zero point
offset
N
10
Connection for pressure pipe
pL
,
R1/8
11
Connection for pressure pipe
pBr
,
R1/8
12
Outlet flange
13
Pressure take-off pipe
pBr
