Technical information

GAS PRESS
URE SETTINGS
To regulate the gas inlet pressure:
 Connect a manometer onto the gas valve test point (PM)
 Adjust the inlet gas supply regulator (customer installation) to pressure indicated on data plate::
To regulate the head pressure:
 Connect the manometer to the head pressure test point (PV)
 Ensure the head pressure is correct to the tables provided
RS/UHA
33
RS/UHA-2 RS/UHA-4
Propa
ne ga
s (G31)
TYPE 1 2 3 4 5 6 7
Gas supply pressure 37 mBar
Head pressure max 35,5 35,0 35,5 35,5 34,5 35,5 34,5 mBar
Head pressure min (two stage -dual
power)
17,0 18,0 18,5 18,0 18,0 18,0 18,5 mBar
WAR
NING Inlet gas pressure must not exceed 60mbar at the gas valve inlet
SINGLE STAGE
Gas valve settings Propane G31
For operation on propane it will be necessary to exclude the pressure regulation of the gas valves by the method shown
Screw adjuster RP to the bottom:
TWO STAGE AND DUAL POWER
Gas valve regulation Propane G31:
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.
On heaters
with 2 gas valves the above must be carried out on both valves.