PART II: INSTALLATION
18
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
regulators) from becoming rapidly blocked. The filter is normally installed upstream from all the control and on-off devices.
ATTENTION: it is reccomended to install the filter with gas flow parallel to the floor in order to prevent dust fall on
the safety valve during maintenance operation.
SA
SA
TP
D
= BS
SKP1.
SKP2.
*
*
*
*
*
*
*
*
*
SIEMENS VGD..
Mounting positions
TP
Siemens VGD... con SKPx
Example of gas train
Gas filter
PGCP
PGMIN
PGMAX
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)
Summary of Contents for K890A
Page 45: ......
Page 46: ......
Page 47: ......
Page 49: ...Service manual AZL2x LMV2x 3x Burner Management System M12916CD Rev 3 4 03 2023 ...
Page 56: ...8 Parameters level heating engineer ...
Page 98: ...50 ERROR CODE TABLE ...
Page 99: ...51 ...
Page 100: ...52 ...
Page 101: ...53 ...
Page 102: ...54 ...
Page 103: ...55 ...
Page 104: ...56 ...
Page 105: ...57 ...
Page 106: ...58 ...
Page 107: ...59 ...
Page 108: ...60 ...
Page 109: ...61 ...
Page 110: ...62 ...
Page 111: ...63 ...
Page 112: ...64 ...
Page 117: ......
Page 118: ......
Page 119: ......
Page 121: ...WB1 QF B QF A ...
Page 122: ......
Page 123: ......
Page 124: ......
Page 125: ......
Page 126: ......
Page 127: ......
Page 128: ......
Page 129: ...QF A QF B ...
Page 130: ......
Page 131: ......
Page 132: ......
Page 133: ......