1.
Remove the plug from the pressure
test port. The plug is located
between the right side lintel and
fi rebox side (bottom port). (Fig. #33)
2.
Thread the extension test fi tting into the
open test port. (Fig. #34)
3.
Attach a pressure gauge onto the
fi tting.
4.
When testing is complete remove the
extension test fi tting and replace the
plug. Thread sealant will be required to
ensure a gas tight connection.
Correct gas pressure requirement:
Supply Pressure
Natural Gas
Propane
Min. Pressure
5.0" WC
12.5" WC
(For purpose of input adjustment)
Max. Pressure
13.9" WC
13.9" WC
Manifold
Pressure
Maximum
3.8" WC
11" WC
Minimum
2.1" WC
5.5" WC
SUPPLY
PRESSURE
MANIFOLD
PRESSURE
Fig #29a
Note: To test the gas pressure, turn off the gas supply before removing the plug from
the supply pressure test port or manifold pressure test port.
Verify gas pressures with the fi replace lit and on the highest setting.
Fig #28
Fig #28
12
TC30.NG06C 200411-16
Gas Pressure Check
