BRYANT Gas Heat Rooftop Package 581JP28M

Outdoor hood inlet filters cleaned

Fan shaft bearing locking collar tightness checked

Shut off all electrical power supply to the unit and install a lockout tag.

Close the manual gas shutoff valve located on the gas supply line.

Remove the manifold pressure tap plug from the manifold and connect a pressure gauge or manometer.

Open the manual shutoff valve, then turn on the unit main gas valve.

Set the room thermostat to call for heat.

Turn the key switch to the RESET/TEST position for seven seconds

Verify that the test/reset station’s Alarm LED turns on

Reset the sensor by turning the key switch to the RESET/TEST position for two seconds

Verify that the test/reset station’s Alarm LED turns off

Ensure the replacement belt is of the same section type or similar size.

Verify that the replacement belt is not a 'FHP' or notched type V-belt.

Loosen the motor mounting plate front bolts by turning counterclockwise.

Loosen the motor mounting plate rear bolts by turning counterclockwise.

Loosen the jack bolt lock nuts by turning counterclockwise.

Loosen the jack bolts to relieve belt tension.

Remove the burner rack from the unit as described in the Removal and Replacement of Gas Train section.

Inspect the burners for dirt and remove them from the rack if necessary.

Mark each burner to identify its position before removing from the rack.

Use a soft brush to clean the burners and cross-over port as required.

Adjust the spark gap to 0.12 – 0.14 inches (3.06 – 3.60 mm).

Ensure the spark gap is spaced 0.18 inches (4.60 mm) from the end of the burner.

Check if the factory orifice has been removed.

Ensure each orifice is tight at its threads into the manifold pipe and the orifice projection does not exceed the maximum valve.