HAMWORTHY HEATING LTD
LILLIPUT HE
500001047/F
13
8. COMMISSIONING
The boiler should be commissioned by a competent
person. The Gas Safety (Installation and Use)
Regulations require that only Registered (i.e.
CORGI Registered) gas personnel should install,
commission and service gas fired equipment such
as these boilers.
Failure to comply with these
regulations may lead to prosecution.
Before commencing the commissioning of the boiler,
ensure that any personnel involved are aware of the
action about to be taken.
8.1 Preliminary
checks
BEFORE
starting the boiler, check the following:
a.
Check that fuel supply is turned off.
b.
Check that electrical supply is isolated.
c.
Check that electrical installation conforms to
the requirements of these Instructions, the
IEE Wiring Regulations for electrical
installations, and any other local Regulations
which apply.
d.
Check that electrical connections are correctly
made, e.g. no loose strands at terminals.
e.
Check that supply is correctly fused for the
current rating of the installation.
f.
Check that electrical installation is correctly
earthed (earth continuity between boiler, gas
pipework and mains electrical supply).
g.
Check that installation is complete.
h.
Check boiler is standing level on an adequate
base.
i.
Check boiler castings are undamaged and
heat exchanger access plates are correctly
fitted and sealed.
j.
Check all thermostat bulbs are correctly
inserted in the appropriate pocket.
k.
Check for water leaks and ensure that both
boiler and heating system is full of water and
properly vented.
l.
Check that all drain cocks are closed, and
that all isolating valves in flow and return
pipework are open.
m.
Check that flue is unobstructed and conforms
to the relevant Regulations, Code of Practice
or British Standards. Refer to Section 3.6
n.
Check boiler house is adequately ventilated
(refer to Section 3.7) and that ventilation
grilles are unobstructed.
o.
For OIL
; check that tank(s) have been filled
and oil supply pipework between tank and
burner has been primed.
p.
For GAS
; check soundness of gas installation
and that pipework is purged of air, as detailed
in British Gas Publications IM/5 and IM/2
respectively.
Check that gas meter is operational and has
been checked by the local region of British
Gas.
Check that gas meter and supply pipework is
of sufficient size to meet the input rating of the
burner/boiler. Refer to Section 2.1.
q.
Check that burner output is correct for size of
boiler in question, referring to Section 2.1 and
the manufacturer's technical information
supplied with the burner.
8.2
Oil fired Boilers
a.
Check flexible oil lines are tightly jointed and
are not twisted or kinked to form an
obstruction.
b.
Check correct nozzle(s) is fitted to burner,
and that it is tight.
c.
Check electrodes and ensure porcelain
insulation is not cracked.
d.
Check electrodes are correctly positioned,
and gap is correctly set, as specified in the
manufacturer's technical information supplied
with the burner.
e.
Check blast tube is correctly located, and
securely fastened in place and internal
combustion chamber baffle is correctly
located.
f.
Check burner seats correctly onto burner
mounting plate and is securely fastened in
place.
g.
Set burner for the required fuel and air
throughputs, as specified in the
manufacturer's technical information supplied
with the burner.
h.
Fit a pressure gauge on burner oil pump to
check pump pressure is correctly set.
i.
Check that overheat thermostat manual reset
is set, and that boiler control thermostat and
control system are set to call for heat.
Switch the boiler on and start the burner.
j.
The burner control will first operate the fan to
pre-purge the boiler, then produce an ignition
spark and finally open the oil solenoid valve
and the flame should ignite.
k.
Purge air from oil pump through pressure
gauge port.
IF BURNER LOCKS OUT WAIT 45 SECONDS
BEFORE PRESSING RESET BUTTON ON
BURNER CONTROL BOX.
l.
With burner firing, check the atomising
pressure on gauge and adjust as necessary
using the pressure regulator on burner oil
pump. Refer to technical information supplied
with burner.
m.
After allowing burner to reach stable firing
conditions for approximately 15 minutes, carry
out combustion gas check.
Measure
CO
2
, CO, smoke number, flue gas
temperature and circulating water
temperature rise across the boiler. The
readings obtained should be as follows:-
CO
2
11-12%
CO
less than 100 ppm
