Cuenod C 285 Operating Instructions Manual page 12

Start-up
Description and settings
VGD gas valve
SKP75 regulator
The VGD valve associated with
SKP75 regulator ensures a constant
gas flow/air flow ratio and is quick-
acting. The regulator also takes into
account combustion chamber pF
pressure.
The valve is delivered preset according
to table here below.
Burner C 285 GX 507/8
Gaz P VGD 40.065 40.08
(Screw R)
G20 20 - 40
(Screw D)
Burner C 330 GX 507/8
Gaz P VGD 40.065 40.08
(Screw R)
40
(Screw D)
G20
(Screw R)
150
(Screw D)
Burner C 380-430 GX 507/8
Gaz P VGD 40.065 40.08
(Screw R)
G20 150
(Screw D)
12
1 2
2 1,4
2
1,4
1
2
R ratio
indicator
1
2
05/2008 - Art. Nr. 13 013 503D
1 Pressure switch electrical
connection (DIN 43650)
2 Solenoid electrical connection
(DIN 43650)
3 Pressure switch
4 Intake flange
5 Pressure take-off G 1/8 before the
filter
6 External filter DN65
7 Identification plate
8 Air pressure pL G 1/8 connection
9 Adjusting screw R of gas flow/air
flow ratio
12 Adjusting screw D for correcting
zero point
13 Connection G 1/8 for combustion
chamber pressure pF
14 Connection G 1/8 for gas
pressure pBr
15 Outlet flange
16 pBr - pL - pF pressure take-off
pipes
Setting gas pressure switch
• Remove transparent cover.
Unit includes a
movable graduated disk.
• Provisionally set the pressure
switch at the minimum value
shown on the graduated disk.
Gas valve
opening
indicator
D value
indicator
| index and a