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4.6. PRE-COMMISSIONING CHECKLIST
CAUTION
• Ensure all service pipes including the heating pipe work is correctly
installed and leak free.
• Ensure all isolation valves connected under the boiler are in the fully open
position
• Inspect the gas information on the boiler data badge and ensure that the
gas supply connected to the boiler can deliver the working requirements
and that the gas supply has been correctly purged before lighting the
boiler.
• Check the digital pressure reading on the boiler display screen and ensure
it is between 1.0 – 1.5 bar when the boiler is cold, and the system has been
bled of all excess air.
• Make sure the system and boiler are leak free from any water leakage.
• Ensure that the PRV is correctly connected to the boiler and that all pipe
work and termination is installed correctly.
• Ensure the condense pipe work is connected to the boiler correctly and
that the pipe work and terminal is fully connected and leak free from any
water leakage.
• Check all electrical connections are connected to a 240v ac 50Hz supply
with suitable isolation.
• Ensure the appliance is fully and correctly earthed.
• Check that the electric supply polarity is correct.
• Check that all external control connections are correct and that 240v ac
has not been connected directly to the external control connection point
located on the connection terminal block
THIS LINK MUST BE REMOVED
AND CONNECTED TO A VOLTAGE
FREE EXTERNAL CONTROL
• Ensure all flue connections are correctly made and the flue system is
correctly supported.
• Any flue joints need to be fully accessible to comply with the latest
regulations regarding flues in voids.
• Check and make sure the flue hole are sealed both internal and external.
• Ensure the gas supply is free from any gas leakage and that the ECV is
fully open.
• Check that the system has been correctly flushed and that a system
inhibitor has been added at the correct dosage.
• Ensure that the appliance is protected by an external 3 amp fuse on the
incoming mains electric supply.
• If an external expansion vessel is installed please ensure the pre charge is
the same as the pre charge pressure of the expansion vessel located inside
the boiler.
FLUE INTEGRITY CHECK
ATTENTION
Ensure that all flue joints are correctly made and sealed and check the flue
is suitably supported as per the manufacturer’s instructions.
Inspect the terminal position and ensure there is no obstruction and make
sure the flue is sealed through both sides of the wall and if vertically
installed through the roof space.
Purge your FGA into fresh air and take a note of the O2, CO2 and CO
reading when successfully purged.
The boiler front cover MUST be correctly fitted and in place when carrying
out this check.
Operate the boiler in maximum output by either running a DHW tap or
put the boiler into service mode (please see page? for instructions).
Remove the air inlet test point on the flue elbow or adaptor and insert your
FGA, the O2, CO2 and CO reading whilst the boiler is in operation should
read the same as it did when purged into fresh air, once this is ok and
complete insert the cap back into the elbow or adaptor.
Please ensure that the flue is adequately supported at the correct distances
stated in the flue data section of this manual and that all flue extensions are
installed with a 3% slope back to the boiler unit.
If the boiler is installed with just the horizontal flue terminal and no flue
accessories then the boiler does not require the horizontal flue terminal to
have a 3% slope back to the boiler as the horizontal terminal has this built
in so please ensure it is installed level.
4.7. CHECKING INLET GAS PRESSURE
ATTENTION
Isolate the appliance at the electrical supply point and turn the gas isolation
valve off. This is located under the boiler.
Drop down the boiler front control panel and connect a suitable pressure
gauge to the inlet test point on the gas valve.
Open the gas isolation valve and switch the appliance back on from the
electrical supply point – caution should be taken as the cables around the
boiler front control panel maybe live.
Put the boiler into service mode by pressing both Mode and Reset buttons
together until the circle completes and the boiler display panel will show
“Lo” press the DHW + button and hold briefly. When released the display
panel will show “Hi”, let the appliance settle in high mode for a minimum
of 2 minutes and then check your pressure gauge and check to see if the
dynamic pressure corresponds with the boiler minimum dynamic gas
pressure as illustrated on the technical data in this manual.
After checking the pressure press both the Mode and Re-set buttons until
the circle completes and the boiler will revert to the standby display. Isolate
the power supply to the boiler, close the gas isolation valve and remove the
pressure gauge from the inlet test point on the gas valve. Ensure the test
point screw is tight and turn on the gas isolation valve and with a suitable
LDF test the point for leakage.
Re-assemble the front control panel and boiler cover then switch the power
supply to the boiler back on.
4.8. TESTING FOR GAS LEAKS DURING USE
CAUTION
Using a suitable and certified LDF and taking extreme caution that the
LDF solution does not come into contact with any electrical wiring or
components test all gas joints with the appliance operating in full power by
operating a DHW tap.
Turn off the appliance at the electrical isolation point and clean up any
residue LDF.
4.9. CHECK GAS RATE
CAUTION
The gas rate should be taken at the meter supplying the boiler and a visual
inspection of the gas meter should be carried out before commencing to
ensure it meets all relevant and current regulations and requirements.
The gas rate must be carried out in accordance to the current gas working
practices.
