andrews L24/31, Installation Manual, Operation And Service Manual

Page: 34 / 61

COMMISSIONING SECTION 4
29
Fig 23.
Checking Main Burner Pressure
1. Turn gas control knob clockwise to OFF.
2. Release bleed screw A and connect pressure gauge tube.
3. Light burner as described above.
4. With the main burner running, check that the burner pressure is as stated on the data
plate and in Section 2, Technical Data.
5. Turn the main gas control knob to OFF, remove the pressure gauge, tighten the bleed
screw and test for gas leaks (when the burner is re-lit) with a leak detection fluid.
Checking Correct Shape and Size of Pilot Flam e
No adjustment is provided for the pilot. The restrictor (C) of the multifunctional control
should be fully open (turned fully anti-clockwise).
When viewed from the front of the heater, the pilot flame should appear as shown
in Fig. 24.
Fig 24.