Hi Delta Pool Heaters, 502C-902C

The Hi Delta® line of fan-assisted combustion units offers solid performance with low emissions, flexible control, and easy-to-understand diagnostics.

Hi Delta Pool Heaters, 502C-902C
 Model Number
Full Input in BTUH
Indoor Stack Dia.
Bypass Options
H-Style Bypass  None (Field-Supplied)  CWR
P-502C 500,000 6" STD Yes Yes
P-652C 650,000 8" STD Yes Yes
P-752C 750,000 8" STD Yes Yes
P-902C 900,000 8" STD Yes Yes


  • 83.1% efficiency
  • Multiple vertical venting and sidewall venting options. No extractor required for sidewall applications up to 70ft on room air.
  • All models indoor/outdoor certified
  • Patented burner “security blanket” enhances staged combustion, minimizes installation/start-up issues, and protects burners from metal fatigue.
  • 105ºF minimum inlet water temperature
  • Cupro-nickel finned-tube heat exchanger with brass headers. AB 1953 compliant.
  • VERSA IC® control package with LCD display
  • Status display lights
  • Cascade control of up to 8 units, no external sequencer required.
  • Diagnostics center with history in English , not in codes
  • Modbus RTU BMS port (RS485)
  • 0-10 VDC BMS Interface (set point or direct drive)
  • Ducted combustion air capable. TruSeal® CSA-Certified direct-vent available.
  • Certified to the ANSI Z21.56 pool heater standard.

Bypass Options:
  • The standard external bypass uses a thermostatically-controlled valve to adjust bypass flow and achieve cold-water protection.
  • The Cold Water Run (CWR) option provides electronic control of a variable-speed pump to continuously adjust bypass flow, achieving real-time cold-water protection.



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