Aaon Packaged Rooftop Unit RN-015

Inspect blower wheels for excessive dust build up

Inspect blower bands for excessive dust build up

Was cleaning of blower wheels required?

Was cleaning of blower bands required?

Ensure all components are balanced and free from dust

Confirm no damages due to dust build up

Ensure the bearings are at normal operating temperatures but not running

Add grease to purge the seals (do not over-lubricate)

Select the grease used for re-lubrication

Obtain access to the pulley side bearing access plate if bearing access plates are provided.

Remove two bearing access plate retaining screws and the access plate.

Using hexagonal wrench, loosen set screw in bearing locking collar.

Using light hammer and drift, tap collar in the direction of wheel rotation to unlock collar.

Using socket wrench with extension, remove two nuts which secure bearing housing to the bearing support beam.

Inspect all flue product carrying areas of the furnace and main burners for continued safe operation.

Check gas pipe for leaks before operation and startup.

Ensure all gas supply lines have been purged of air before turning on the electrical power switch.

Turn the gas valve to the on position.

Turn the main electrical power on and set the controls to the heating mode of operation.

Did the combustion ventilation motor enable?

Did the control automatically supply energy to the igniter and the gas valve after the heating call was made?

Gain access to the aluminum energy recovery wheel

Remove the energy recovery wheel from the unit

Remove small foreign materials using one of the following methods

Use compressed air at a distance of at least 0.08 m (2 ft) from the wheel

Use water at a distance of at least 0.08 m (2 ft) from the wheel

Ensure temperature is below 25°C (77°F)