York Single Package Air Conditioner ZXE12D2A3AA1A111A2

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 all applicable codes

Is the furnace disconnected from the gas supply piping system?

Enter the pressure of 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 second stage

Adjust blower speed to specific static and CFM requirements

Adjust belt tension to specific static and CFM requirements

Tighten blower pulley set screws

Tighten motor sheave set screws

Re-check set screws after 10-12 hours run time

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

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 before initial start-up?