York Single Package Cooling Unit ZE060E12B2A1ABA1A2

Remove the adjustment screw cap(s) on the regulator

To decrease the gas pressure, turn the adjusting screw counterclockwise

To increase the gas pressure, turn the adjusting screw clockwise

Enter the current manifold pressure

Is the manifold pressure set to the factory standard of 3.50 IWG?

If the manifold pressure is not set to 3.50 IWG, describe the adjustments made

Inspect unit for possible damage during transit

Note extent of damage on carrier’s freight bill if damage is evident

Request inspection by the carrier’s agent in writing

Ensure compliance with installation instructions and applicable codes

Disconnect furnace and shut-off valve from gas supply piping system for pressure testing above 1/2 PSIG

Replace gas valve if subjected to pressure greater than 1/2 PSIG

Isolate furnace from gas supply piping system by closing manual shut-off valve for pressure testing at or below 1/2 PSIG

Ensure all safety precautions are in place

Remove screws holding the manifold to the burner supports

Open the union fitting in the gas supply line

Remove the gas piping closure panel

Disconnect wiring to the gas valves and spark ignitors

Remove the manifold-burner gas valve assembly

Check burners for accessibility and service

Reverse the procedure to replace the assemblies

Ensure burners are level and seated at the rear of the heat exchanger

Ensure the use of appropriate pipe dope

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

Blow out loose particles from the pipe

Purge all gas lines external to the unit of air before initial start-up

Natural gas may contain some propane. Propane is an excellent solvent and will quickly dissolve white lead and most standard commercial compounds. A special pipe dope must be used when assembling wrought iron or steel pipe. Shellac based compounds such as Gaskolac or Stalastic, and compounds such as Rectorseal #5, Clydes’s or John Crane may be used.

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

Check all joints for leaks with soap solution or other material suitable for the purpose. NEVER USE A FLAME.

Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections.

If leaks are detected, describe the location and severity

Fire or Explosion Hazard Warning

Failure to follow the safety warning exactly could result in serious injury, death or property damage. A fire or explosion may result causing property damage, personal injury or loss of life.