2
2
3
3
4
4
7
5
5
11
10
12
6
9
9
1
1
8
8
7
11
12
9
5
4
1
2
3
8
6
1
15
12
3
4
2
11
11
7
8
6
9
10
5
14
13
26
9. Double Solenoid Valve Gas-air-ratio control Type MBC-...-VEF
9.2 MBC-...-VEF
Pressure taps
1, 2, 3
screwed seal plug G 1/8
4, 5, option
Connecting bore for system accessories
6, 7
screwed seal plug G 1/4
8, 9, option
screwed seal plug G 1/2 (option)
10
Pulse line pBr (built in)
11, 12
Vent plug G 1/8
1. Electrical connection for valves
(DIN EN 175 301-803)
2. Input flange
3. Pressure connection G 1/4
4. Sieve
5. Type plate
6. G 1/8 pressure connection
for pL blower pressure
7. Setting screw, ratio V
8. Setting screw, zero point
adjustment N
9. G 1/8 pressure connection for
p
F
furnace pressure
10. Pulse line for
burner pressure p
Br
11. Test point connection G 1/8
downstream of filter possible
on both sides
12. Test point connection G 1/8
downstream of V1, possible
on both sides
13. Test point connection G 1/8
downstream of V2
14. Output flange
15. Operation display