York Single Package Air Conditioner ZJ078N24R4B5EAA1A3

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. NEVER USE A FLAME.

Was a commercially available soap solution used for leak detection?

Loosen six nuts (top and bottom) A

Ensure nuts (C) are not loosened

Measure deflection distance using belt tension checker

Determine deflection distance from normal position

Re-tighten nuts (A) after adjustment

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 the unit for possible damage during transit

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

Request inspection by the carrier’s agent in writing

Ensure installation complies with enclosed instructions and applicable codes

Connect a manometer to the outlet pressure port on the gas valve

Remove plastic cap covering HI and LO pressure adjustment screws

Set thermostat to call for second stage heat and start furnace

Adjust second stage (100% input) pressure

Enter the current manifold pressure for second stage

Is the manifold pressure within the range of 3.2 to 3.8 IWG?

Adjust the second stage adjustment screw if necessary