York Single Package Air Conditioner ZXG14D2A3AA1A111A2

Adjust blower speed and belt tension

Tighten blower pulley set screws

Tighten motor sheave set screws

Post 10-12 Hours Run Time Checks

Re-check blower pulley set screws

Re-check motor sheave set screws

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

Blow out loose particles from the pipe.

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

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.

Ensure installation complies with local, state, and national codes.

Is the furnace disconnected from the gas supply piping system?

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

Remove cover screws covering HI and LO pressure adjustment screws

Set thermostat to call for second stage heat and start furnace

Enter the current manifold pressure for the second stage

Ensure ZX units are properly phased at the factory

Is the blower rotating in the correct direction at start-up?

Is the electrical connection to the unit correctly phased?

Change the phasing of the Field Line Connection if necessary

High-leg Delta Power Supply Precautions

Ensure high-leg conductor is not attached to X13 or ECM motors

Measure voltage of A or L1 phase to ground