(2) 16847 EA57 Medium Torque Drive Motor 

(1) HK20627 EA71 High Torque Drive Motor (on some models)

(1) 16281 Scanner, UV, Honeywell

(2) HK 33251 – KS84447812 Combustion air, Air Purge Pressure Switches

(1) HK70344 – KS84447832 Primary Air Pressure Switch

(1) KS84447802 Exhaust Fan Interlock Pressure Switch 

(1) KS84447822 – Secondary Air Pressure Switch (Non-VFD)

(1) 47783x_ _ _ **NOTE** Consult APS for last three digits depending on burner model number

Other Suggested Critical Parts

(1) HK39466 Impeller, TBA36/15 (Oil/RFO/LP)

(1) 1668_ Oil Micro Valve **NOTE* Consult APS for last digit depending on burner model number

(1) 1693_ LP Micro Valve **NOTE* Consult APS for last digit depending on burner model number

(1) 303133 – Ashcroft Pressure Switch 0-200 psi

(1) Primary Air/Fuel Nozzle, Oil

(1) Primary Air/Oil Nozzle RFO

(1) Deflector for above Oil Nozzle

(1) Screw for above deflector plate