Test For Spillage - Potterton Hallmark Installation & Service Instructions Manual

5. Check Gas Pressure & Operation Of Fire - Page 10

6. Test For Spillage

10 Gas Connection/Test for Spillage
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5.0. Check Gas Pressure & Operation Of Fire
- Cont.
f) Once the burner is lit, the fire should remain on the its
maximum setting 6 .
g) Check the gas pressure, it should be:-
18.9mbar ± 0.5mbar (7.4in w.g. ± 0.2in w.g.).
This pressure will only be obtained if the
incoming gas pressure is 20mbar (8in w.g.).
h) Push in and turn the control knob through to 'OFF'.
i) Disconnect the pressure gauge, re-fit the pressure test
point screw and test for gas soundness.
j) Close the air relief deflector plate, re-fit the screws.
a) Close all doors and windows, re-light the fire and turn to
setting '6.
b) After 1 0 minutes the fire will be ready to test for spillage.
Expose the test hole by slackening off the screw holding
the cover plate in position and pivot it to the left. See Fig.
17.
c) light a smoke match and position in the test hole as
shown in Fig. 17. The complete head of the smoke
match should be inserted into the hole.
d) If the flue is pulling normally, all the smoke will be drawn
into the chimney.
e) if there are is any downblow or if the smoke seems to
drift from the hole this shows spillage.
f) Turn off the fire, disconnect from the supply and remove
the spigot restrictor. Repeat the smoke test
g) If any sign of spillage persists the chimney is faulty. The
cause of the faulty chimney must be rectified, before
leaving the fire installed.
Note: Possible causes of poorflue performance are blocked
or partially blocked chimney (cured by sweeping) or
downblow (cured by fitting a suitable cowl).
IF THE FAULT CANNOT BE CORRECTED, TURN OFF
AND DISCONNECT THE FIRE. SEEK EXPERT ADVICE.
h) If the test is successful, turn the fire off and complete the
installation.
Part No. 900/9350/1