York Single Package Air Conditioner ZR120N15A2AAA50124A

Adjust blower speed to specific static and CFM requirements

Adjust belt tension as required

Tighten blower pulley set screws

Tighten motor sheave set screws

Have the set screws been re-checked after 10-12 hours of run time?

Inspect the unit for visible damage during transit

Note the extent of any damage on the carrier’s freight bill

Request inspection by the carrier’s agent in writing

Is the furnace disconnected from the gas supply piping system?

Enter the pressure of the gas supply piping system

Is the pressure of the gas supply piping system equal to or less than 1/2 PSIG?

Check that all filters are in place

Replace filters if cleaning is not possible

Install filters ahead of evaporator coil

Ensure filters are of the same size and type as required

Review installation for errors, leaks, or undesirable system effects

Is the blower speed change necessary?

Calculate new datum diameter (DD)

Adjust the blower speed according to the new DD

Use special pipe dope for assembly

Clean piping of dirt and scale by hammering on the outside of the pipe

Blow out loose particles from the pipe

Ensure all gas lines external to the unit have been purged of air