York Single Package Cooling Unit ZD-04K00A2A1AAA1A1

Inspect the unit for possible 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 product installed in compliance with the enclosed installation instructions?

Is the product installed in compliance with applicable local, state, and national codes?

Is the furnace and its individual shut-off valve disconnected from the gas supply piping system during pressure testing above 1/2 PSIG?

Verify that ZE units are properly phased at the factory.

Is the electrical connection to the unit correctly phased?

Is the compressor rotating in the correct direction?

Check for signs of misphasing in the scroll compressor

Is the blower rotating backwards?

Describe the corrective actions taken to change the phasing of the Field Line Connection.

Measure deflection distance using belt tension checker

Use a straight edge from sheave to sheave as reference line to determine deflection distance from normal position

Record the deflection force applied

Number of times belt tension checked in first 24 hours

Close main manual shut-off valve and shut off all electric power to the unit

Remove screws holding either end of the manifold to the burner supports

Open the union fitting in the gas supply line just upstream of the unit gas valve and downstream from the main manual shut-off valve

Remove the gas piping closure panel

Disconnect wiring to the gas valves and spark ignitors

Remove the manifold-burner gas valve assembly by lifting up and pulling back

Check that all filters are in place and clean

Clean or replace filters if necessary

Are the filters installed ahead of the evaporator coil?

Is the unit operating with filters properly installed?