York Single Package Air Conditioner ZR150N15A2AAA50124A

Review installation for errors, leaks, or undesirable system effects

Is the current blower speed appropriate?

Enter the existing datum diameter (DD)

Calculate the new datum diameter (DD) using the formula: (Required CFM/Measured CFM)*Existing DD

Loosen six nuts (top and bottom) A

Ensure nuts (C) are not loosened

Use belt tension checker to apply perpendicular force at midpoint of belt span

Enter the deflection distance obtained (in mm)

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

Record the recommended deflection force for the belt section

Check belt tension at least two times during the first 24 hours of operation

Gas Connection and Pressure Check

Open the main shut-off valve to admit normal gas pressure to the mains.

Check all joints for leaks using soap solution or other suitable material. Ensure the following joints are checked:

Was a commercially available soap solution used for leak detection?

Verify factory phasing of Predator® units

Is the blower rotating in the correct direction?

Is the compressor rotating in the correct direction?

Is the electrical connection to the unit misphased?

Change the phasing of the Field Line Connection at the factory or field supplied disconnect if misphased

Is the scroll compressor drawing low amperage?

Check that filters are installed ahead of evaporator coil

Inspect filters for dirt and debris

Do the filters need replacement?

Replace filters with same size and type