York Single Package Cooling Unit ZE070E12B2A1ABA1B1

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

Blow out loose particles from the piping.

Have all gas lines external to the unit been purged of air?

Inspect unit for possible damage during transit

Note extent of damage on carrier’s freight bill if damage is evident

Request inspection by the carrier’s agent in writing

Verify compliance with installation instructions and applicable codes

Ensure furnace and shut-off valve are disconnected from gas supply piping system during pressure testing above 1/2 PSIG

Replace gas valve if subjected to pressure greater than 1/2 PSIG

Isolate furnace from gas supply piping system by closing manual shut-off valve during pressure testing at or below 1/2 PSIG

Verify that the 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?

Measure the amperage of the scroll compressor.

Are the suction and discharge pressures normal?

Is the noise level of the scroll compressor normal?

Loosen six nuts (top and bottom) A

Ensure nuts (C) are not loosened

Use belt tension checker to apply perpendicular force and obtain 4mm deflection distance

Record deflection force applied

Re-tighten nuts (A) after adjustment

Enter the number of times belt tension was checked in the first 24 hours

Remove the adjustment screw cap(s) on the regulator

Adjust the gas pressure by turning the adjusting screw counterclockwise to decrease pressure or clockwise to increase pressure

Verification of Manifold Pressure

Enter the current manifold pressure reading

Is the manifold pressure set to the factory standard of 3.50 IWG?

If the manifold pressure is not set to 3.50 IWG, describe the adjustments made based on local fuel heating value