16
221763A
7 Commissioning
7.3 Operational Checks
Check operation of the flame failure device as follows, with the
main burner alight, turn the gas valve control knob “A” fully
clockwise to its stop
, this will extinguish the main and pilot
burners. The safety device should close before 60 seconds
have elapsed, a click from the gas valve will indicate it has
closed.
Remove the pressure gauge and refit the pressure test point
screw “G”, make sure that a gas tight seal is made.
Turn thermostat “B” to “O” then relight the pilot burner as
Section 7.1.
Relight the main burner.
Check that the boiler thermostat and all automatic controls are
operating correctly.
Do not attempt to adjust the thermostat calibration screw.
Relight the main burner and check for gas soundness with a
suitable leak detection fluid.
7.4 Completion and User Information
Instruct and demonstrate the efficient and safe operation of the
boiler, heating and hot water system.
Hand the Instructions for Use to the user, for their retention,
making sure that they are understood.
Advise that to ensure the continued efficient and safe operation
of the boiler it is recommended that it is checked and serviced
at regular intervals. The frequency of servicing will depend
upon the particular installation and usage, but in general once
a year should be enough.
Draw attention, if applicable, to the current issue of the Gas
Safety (Installation and Use) Regulations, Section 35, which
imposes a duty of care on all persons who let out any property
containing a gas appliance.
Fit the plinth front by locating the sides over the boiler plinth then
lowering to engage the upper and lower hooks, see diagram
7.3.
Fit the door by locating the hooked runner at the bottom into the
slots in the side casings and pushing on to the studs on the side
casings.
Reminder - Leave these instructions and the “Benchmark”
logbook with the user.
PILOT FLAME DIMENSION
Diagram 7.2
PLINTH / DOOR FITTING
Diagram 7.3
FLAME
DIMENSION
SPARK GAP
DIMENSION
0937
Pilot shield
omitted
for clarity
13 (
1
/
2
in.)
APPROX.
3-4mm.
(
1
/
8
in.)
PILOT
BURNER
ASSEMBLY
VIEWING
WINDOW
1356
VIEW 2
VIEW 1
VIEW 2
PLINTH
FRONT
LOWER
HOOK
VIEW 1
UPPER
HOOK
DOOR
FASCIA
STUD
