PART II: INSTALLATION
22
version with SKP2 (built-in pressure stabilizer)
Siemens VGD SKPx5 (Auxiliary-optional micro switch)
Gas valveGas Filter (if provided)
The gas filters remove the dust particles that are present in the gas, and prevent the elements at risk (e.g.: burner valves, counters and
SA
SA
TP
D
= BS
SKP1.
SKP2.
*
*
*
*
*
*
*
*
*
SIEMENS VGD..
Mounting positions
TP
Siemens VGD... con SKPx
Example of gas train
Gas filter
T
VR
Performance range (mbar)
neutral
yellow
red
Spring colour SKP 25.0
0 ÷ 22
15 ÷ 120
100 ÷ 250
Spring colour SKP 25.4
7 ÷ 700
150 ÷ 1500
Siemens VGD valves with SKP actuator:
The pressure adjusting range, upstream the gas valves group,
changes according to the spring provided with the valve group.
To replace the spring supplied with the valve group, proceed as fol-
lows:
- Remove the cap (T)
- Unscrew the adjusting screw (VR) with a screwdriver
- Replace the spring
Stick the adhesive label for spring identification on the type plate.
N
L
1
2
3
1
2
3
Valve drive
Plug connection
End of stroke
Plug connection
Actuator connection
A Valve closed
(only with SKPxx.xx1xx)
