NJ Heating And Air Conditioning

Replacing A Rooftop Unit

A overview of a rooftop replacement

  • Call manufacturer and find out lead time of unit and curb adapter.
  • Once unit and adapter is available, schedule crane.

The following should take place the day before or the morning of crane pick.

  • Cone off area where crane will pick from.
  • Locate units power source (breaker panel).
  • Lockout/Tagout breaker and gas valve.
  • Reclaim Refrigerant from unit.
  • Disconnect Unit from power and gas.
  • Disconnect Control wiring and write down colors used and terminal locations.
  • Check to see if units ductwork is screwed to unit or curb. Support duct and remove screws if necessary.
  • Help crane set up when he gets there.
  • Position truck with new rooftop and curb for crane.
  • Remove old rooftop unit from rooftop.
 
  • Clean top rail of existing roof curb and apply new foam tape. Inspect condition of roofing and ducts.
  • Crane up and install adapter curb.
  • Apply foam tape to top of curb adapter, and inspect seal between existing curb and adapter.
  • Crane up new Rooftop unit and hook up electric and gas pipe.
  • Follow manufactures start up procedure, and inspect all of units components.

 

 

 

 

 

 

 

 

 

 

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