York Single Package Air Conditioner ZXE09E2A3AA1A111A2

Use special pipe dope for assembly

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

Blow out loose particles from the pipe

Ensure all gas lines external to the unit have been purged of air

Close main manual shut-off valve

Open the union fitting upstream of the unit gas valve and downstream from the main manual shut-off valve

Remove screws holding each end of the manifold to the manifold supports

Disconnect wiring to the gas valve

Remove the manifold & gas valve assembly

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

Are there any installation errors, leaks, or undesirable system effects?

Document the issues found during the review

Enter the measured CFM at unit start-up

Enter the existing datum diameter (DD) of the variable pitch motor sheave

Calculate the new datum diameter (DD)

Is the new datum diameter (DD) calculated correctly?

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

Remove cover screws covering HI and LO pressure adjustment screws

Second Stage Pressure Adjustment

Set thermostat to call for second stage heat and start furnace

Enter the current manifold pressure for second stage