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

Page: 36 / 61

COMMISSIONING SECTION 4
Checking for Spillage at the Draught Diverter
If an extract fan is fitted, (see Air Supply and Ventilation) 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.
ALL STANDARD AND HI FLO MODELS
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.32).
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.
STANDARD
RANGE
HI-FLO RANGE
ALL MODELS
INSTRUCTING
THE USER
31
Fig 24.
Checking main burner pressure
1. Turn gas supply OFF.
2. Release bleed screw A one turn and connect pressure gauge tube.
3. Light burner as described above.
4. By means of the external in-line regulator, set burner pressure for gas being used in
accordance with the data plate.
5. Remove pressure gauge tube and tighten bleed screw.
6. Leak test using leak detection fluid.
A