Gas valve head pressure setting high fire Propane G31:
When setting the gas pressure for propane high fire
(second stage ) contact SF should be closed the high
fire pressure adjusting screw on the gas valve must be
excluded.
Connect a manometer on test point PV
Remove the plastic cover from the adjuster
RP1 RP2
With a screw driver
hold the adjuster RP1 stationary
and using a spanner, screw adjuster RP2 clockwise to
the bottom of the thread until the correct pressure
according to the data plate is achieved .
Gas valve head pressure setting low fire Propane G31 :
When setting the gas pressure for propane low fire
(first stage) contact SF should be open. The low fire
pressure should be adjusted to the settings shown on
the data plate and the data in the manual provided by
adjusting screw RP1
Clockwise increases the pressure
Anti clockwise to decrease the pressure
On completion replace the plastic cover and seal with
paint
Remove manometer ensuring that the test point screw
is gas tight
Gas valve gas SIT 843
On heaters with 2 gas valves the pressure regulation must be carried out on both gas valves
