Commissioning The Appliance - Baxi Bermuda 45/4 M Installation And Servicing Instructions

COMMISSIONING THE APPLIANCE - Page 23
Reference should be made to BS 5449 section 5 when
commissioning the boiler and system.
Flush the whole system in accordance with BS7593: 1992.
(see System Details section of these instructions). Check for
water leaks.
Turn the gas service cock ¼ turn from the OFF position. This
will supply gas to the boiler only.
Purge the air from the gas service pipe in accordance with
BS 6891 and test for gas soundness.
Turn the boiler thermostat to the OFF position.
Ensure that all external controls e.g. room'stat, timer etc. are
calling for heat and turn on the mains electrical supply.
Slacken the test point sealing screw and connect a pressure
gauge.
MANUAL CONTROL MODELS
Hold in the grey button on the gas control valve.
Press the piezo igniter button and release (The pilot can be
seen in the viewing window on the right hand side of the
controls). Repeat until the pilot lights. Hold in the grey button
for a further 15 seconds.
The pilot should remain alight. If not, turn the grey button
clockwise and wait 3 minutes before repeating the
sequence.
The pilot flame should be without a yellow tip and be
approximately 20mm long. No adjustment is possible.
Operate the burner by turning the boiler thermostat knob to
the HIGH setting and check the operation of the flame failure
device by turning the grey button Grey Push clockwise. The
burner and pilot should extinguish.
Turn the boiler thermostat to the "O" position, wait 3 minutes
and relight the pilot as previously described. Turn the boiler
thermostat to HIGH and check the burner setting pressure,
adjusting if necessary. This is done by removing the
governor cover screw and adjusting the governor in either
direction as required:- clockwise to increase, anticlockwise to
decrease.
Remove the pressure gauge and tighten the pressure test
point sealing screw.
The boiler and system should be run and then flushed and
treated in accordance with B57593: 1992 and the flushing
agent/inhibitor manufacturers instructions. When all the air
has been removed from the water circuit, the pump and
radiators should be balanced to achieve the design
temperature drop across the system.
Carefully read and complete all sections of the "Benchmark"
Installation, Commissioning and Service Record Log Book
that are relevant to the appliance and installation. The details
of the Log Book will be required in the event of any warranty
work. The Log Book must be handed to the user for safe
keeping and each subsequent regular service visit recorded.