andrews 24/39, Installation Manual, Operation And Service Manual

Page: 37 / 96

37
COMMISSIONING SECTION 4
Check correct shape and size of Pilot Flame
No adjustment is provided for the pilot. The restrictor C on the gas control (see Fig. 22)
should be turned fully conterclockwise to the fully open position.
When viewed from the front of the heater, the pilot flame should appear as shown in the
illustration above.
Checking for Spillage at the Draught Diverter
If an extract fan is fitted, carry out a spillage check as set out in BS 5440 Part 1,
Appendix B. If spillage does occur, increase the ventilation area until the products clear
well. If an openable window is in the boiler house or room containing the heater(s), turn
on the extract fan and heater(s). Open the window fully, and, using a stiff card,
gradually reduce the opening until the appliance(s) just spills. Then increase the opening
until the products clear well. Measure the opening for the additional area required.
When satisfactory commissioning and testing has been achieved, hand this manual to the
User or Purchaser and explain the method of economic and efficient operation.
Explain that:
1. Other than for long shutdown periods, the heater must be left operating normally.
2. It is important that the control thermostat is set at the lowest temperature consistent
with the user's needs.
Ensure that the user or purchaser is fully conversant with the lighting, shutdown and
general operating procedures, including the emergency procedure. (see p.34).
Advise that any air vents must be kept clear and items must not be placed or stored in
the vicinity of the heater.
Advise of precautions necessary to prevent damage to the heater and systems in the
event of the system remaining inoperative during frost conditions.
Advise the user or purchaser that for continued efficient and safe operation of the heater,
it is important that magnesium anodes are inspected annually and that adequate servicing
is carried out at regular intervals by the installer or by the local gas authority.
HI-FLO
RANGE
PERMANENT
PILOT MODELS
INSTRUCTING
THE USER
ALL STANDARD
AND Hi-Flo
MODELS
Fig 26.