Firebird Condensing Boiler
6
27
COMMISSIONING
It is recommended that commissioning is carried out by
a competent and licensed qualified heating technician.
It should be noted that it is the responsibility of the
installer to ensure that the boiler is properly
commissioned. Failure to do so may invalidate the
boiler guarantee and any extended warranty.
PROCEDURES
1. OIL TANK
The installation of the oil tank and supply line should
comply with all relevant local and national standards.
If a single supply line is used ensure that the bottom of
the tank is above the burner. A suction line system via a
de-aerator tiger loop should be used where the level of
the oil in the tank may fall below the level of the oil
burner pump.
CHECK AND ENSURE CORRECT GRADE FUEL OIL HAS
BEEN SUPPLIED.
2. THE BURNER
A two single pipe system may also be used where the
tank is below the boiler installations. Please flush out oil
pipe by drawing off some oil before connecting fuel
pipe to burner - otherwise there is a danger of grit and
dirt being forced into the burner pump, resulting in
pump blockage, damage and ‘lock-out’.
3. THE BOILER
A. Switch off the power supply, ensure that the
boiler and system is full of water, all valves are
open and that installation conforms with all
Standards, Regulations and Instructions.
B. Depending on condensate disposal system
check that the condensate trap is primed or
pump is operational.
C. Check that boiler baffles are correctly
positioned.
D. Check the oil supply by disconnecting the oil
supply hose at the burner and running off a
quantity to ensure it is free from air. Then bleed
air from burner pump. See Burner Manual.
* Before proceeding to filling, ensure that electricity
supply is switched off to the boiler.
Filling and Testing
Check that all connections, especially compression joints,
are fully tightened. Re-check and ensure that pressure
vessel air charge is correct, then fill system with water via
filling system. Turn off water supply before system
pressure reaches safety valve operation point of
30 PSI. Vent system via all manual air vents including
circulating pumps, boiler, radiators, system high points.
etc. Check that dust caps are loosened on auto air vents,
keep constant check on system pressure gauge. If
pressure has dropped re-admit water to above pressure.
Ensure all appropriate boiler and system valves are open.
With water fill supply turned off, thoroughly flush out
boiler and system to remove all foreign matter before
allowing boiler and pumps to operate. If in doubt, drain
system and repeat above procedure. At this stage
flushing-out water should be clean and clear of all foreign
matter.
Refill the system and again vent at all points as described
above. Examine the complete system for water leaks
having pressurised it to 25 PSI. Correct any leaks, then
check operation of pressure relief valve by admitting
further water until the valve blows-off. This should
occur when system pressure rises to 32 to 35 PSI. When
satisfied with valve operation, and with mains water still
turned off, draw off sufficient water until initial system
design fill pressure (P
i
). (cold fill) is established (10 to 12
PSI - as calculated for system). Once the system pressure
has been set, shut the automatic fill off. Continual
fresh water make up can cause mineral build-up and
premature failure of the heat exchanger.
Remember that initial cold fill pressure can only be
checked when system water has properly cooled down.
Check that final operating pressure (P
f
) is under 25 PSI
with all radiators turned on and up to highest working
temperature. Should system operating pressure exceed
this, check:
1. That initial cold fill pressure is correct and
if additional expansion vessel is fitted,
that pressure is equal in each vessel.
2. That expansion vessels are sized correctly.
NOTE: Special attention should be given to existing
heating systems where Firebird boiler has
replaced an existing unit. Extra effort should
be made to ensure that all original pipe
work and radiators are repeatedly flushed. If
possible use a proprietary cleansing agent
suitable for system as loosened scale and
foreign matter can seriously reduce boiler
performance and pump efficiency.
Use corrosion inhibitor of suitable type.
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