Unigas P20, Installation, Operation And Maintanance Manual, Page: 17 / 52

PART I: INSTALLATION 17
Gas valve Dungs MVD
!
To adjust the gas flow rate unscrew the plug T, slacken the
locking nut and apply a screwdriver to the adjusting screw VR.
By turning clockwise, the flow is decresed and by turning anti-
clockwise it is increased.
!
When this operation has been completed lock the nut and
screw down the plug T.
!
To replace the coil remove the plug T, withdraw the coil B and
after replacing the coil refit the plug T.
Fig. 29
Landis gas valves
Version with SKP20 (with incorporated pressure governor).
!
To increase or decrease gas pressure, and therefore gas flow
rate, remove the cap T and use a screwdriver to adjust the
regulator screw VR. Turn clockwise to increase the flow, anti-
clockwise to reduce it.
!
Connect up the gas tubing to the gas pressure nipple (TP in
figure).
Leave the blowhole free (SA in figure).
Should the spring fitted not permit satisfactory regulation, ask
one of our service centres for a suitable replacement.
(For further informations see also the appendix)
WARNING:
removing the four screws BS drives the device
to be unserviceable!
Fig. 30
VR
T
B
TP
SA
VR
BS
T