Below is the procedure of Heat exchanger replacement for Carrier Furnace.

Expanded view of Heat System Components

Furnace with Faulty Heat Exchanger (Inspection by certified Technician)

  

Removal of all components- Burners, Inducer Motor, Pressure switches, Control board, Harness, Gas valve, Blower motor, Inlet panel, High limit switch, J-box, Drain connections, Flame Sensor, Hot Surface Igniter

    

Empty Shell of Furnace

 

Pulling out complete Primary Cells & Secondary Heat Exchanger Assembly

Dismantling of Primary Cell Inlet panel, Coupling box, Cold spot baffle & Secondary Condensing Heat Exchanger

 

Assembling Primary cells with Inlet and Outlet Panel with new Gasket.

 

 

Assembling Secondary Heat Exchanger with Inlet panel

Re-Installation of new Cold spot baffle and Coupling box between Primary cells outlet & Secondary Heat exchanger inlet with new Gaskets & Sealant.

  

Complete Heat exchanger assembly to be placed inside Furnace upper cabinet with proper alignment, secure with screws and sealent

 

Re-installation of all Components previously removed – Burners, Inducer Motor, Pressure switches, Control board, Harness, Gas valve, Blower motor, Inlet panel, High limit switch, J-box, Drain connections, Flame sensor, hot surface igniter

  

Commissioning and testing of Furnace