A.O. Smith BFC Cyclone 120, Installation, User And Service Manual

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BFC 80 to 120
The gas control valve has a test nipple that can be used for measuring the supply
pressure.
This test nipple has a sealing screw. Loosen the sealing screw by a few turns. Do not
completely loosen it as it can be difficult to retighten.
IMD-1097a R0
Open the gas supply and vent the gas supply line via the test nipple.
Connect a pressure gauge to the test nipple as soon as gas starts to flow from it.
Switch on the power to the appliance using the isolator on the appliance.
Switch the controller ON by setting the 0/I switch to position I.
The display will now show INTERNAL CHECK for about 10 seconds, and will then go
to the main menu.
Select SERVICE OPERATION, FULL LOAD from the service menu.
Confirm with [ENTER].
The display shown here will appear
The appliance is now in Full load mode and will ignite.
You must wait about 1 minute after the display shows the text RUNNING before
reading the dynamic pressures (the fan needs this time to get up to full speed, so
that you can get a reliable reading).
Use the pressure gauge to read the supply pressure and compare it against the value
from the gas table (see section 12.3).
Note
Consult the mains gas supply company if the supply pressure is not correct.You cannot
yet start using the appliance. You must now take the appliance out of service (see section
4.2.2).
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