BRYANT Gas Heat Rooftop Package 581JT17M

Caution! PERSONAL INJURY HAZARD

Wear approved safety glasses, work gloves, and other recommended Personal Protective Equipment (PPE) when working with refrigerants.

Disconnect all AC power to the unit using approved lockout/tagout procedures.

Use the gauge set approved for use with Puron (R−410A) refrigerant to recover all refrigerant from the system.

Disconnect the liquid line at the TXV inlet.

Remove the liquid line connection at the TXV inlet.

Shut off the gas using the manual shutoff switch located in the gas supply line

Turn the gas valve ON/OFF knob to the OFF position

Shut off power to the unit and install a lockout tag

Disconnect the gas piping at the unit gas valve

Remove the wires connected to the gas valve

Remove the wires connected to the gas valve

Mark each wire to assist in reconnecting power to the gas valve

Press the TEST button on the face of the receptacle

Did the receptacle trip and open?

Is the GFCI receptacle properly grounded?

Is the power line phasing correct?

Repair ground wire connections as needed

Check the fan performance at the target speed and airflow rate

Is the motor capable of operating at the new operating condition?

Ensure drive packages are not changed in the field

Verify that the change will not alter the unit’s certification or require heavier wiring

Replace the motor’s adjustable pitch pulley with a fixed pitch pulley after final airflow balance adjustment

Variable Pitch Pulley Diameter Calculation

Inspection of Air Hood Inlet Screens

Check the following for cleanliness

Is cleaning required for any of the screens?

Cleaning of Air Hood Inlet Screens

Remove the screens that require cleaning

Clean screens with hot low-pressure water and soft detergent

Replace all screens before restarting the unit

Verify flow direction arrows on each filter frame