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3.9.10.
Commissioning
1. Turn on the gas supply to the fire and
purge the gas line. Check all the gas
joints for gas soundness.
2. Connect a pressure gauge to the
pressure test point on the isolating valve.
3. Ignite the pilot in accordance with the
User Instructions.
4. Set the controls to give full gas rate at
the main burner. Check that the main
burner cross lights smoothly.
5. Ensure that the pressure at the pressure
test point is 20 ±1.0mbar for natural gas
or 37 ±1.0mbar for Propane.
6. If the correct
achieved, then some potential causes of
low pressure are:
a)
Supply pipes are not of large
enough diameter.
b)
The supply pipes are kinked,
blocked or partially blocked.
c)
Restriction
isolation valve.
7. Set the control to the low rate position
(small flame image) and ensure that the
flames reduce in size.
8. Turn the fire off.
9. Replace the screw in the pressure test
point.
Note: On short lengths of duct, the fire will
be more prone to the effects of high wind.
The flames may 'pulse' quite high and then
low depending on the outside pressure on
the terminal. This is normal on short lengths
of duct and should not cause concern.
pressure cannot
at
the
appliance
be
Page 31
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