Hi Delta Hydronic Boiler, 992C-2342C

Raypak's family of Hi Delta Hydronic Boilers, 992C-2342C, feature 84% efficiency, indoor and outdoor certifications, and are available in natural gas and propane variants.

Hi Delta Hydronic Boiler, 992C-2342C

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Raypak® Hi Delta® Family Boiler Solutions


Full Input in BTUH
Flue Dia.
# of Stages
 H8-992C and H8-992CD  990,000 10" 3
 H9-1262C and H9-1262CD  1,260,000 12" 4
 H9-1532C and H9-1532CD  1,530,000 12" 4
 H9-1802C and H9-1802CD  1,800,000 14" 4
 H9-2002C and H9-2002CD  1,999,000 14" 4
 H9-2072C and H9-2072CD  2,070,000 14" 4
 H9-2342C and H9-2342CD  2,340,000

  • All models indoor/outdoor certified.
  • 84% Efficiency.
  • CAT I vertical venting, CAT III sidewall venting. No extractor required for sidewall applications up to 70ft on room air.
  • Patented burner “security blanket” enhances staged combustion, minimizes installation, start-up issues, and protects burners from metal fatigue.
  • 105ºF minimum inlet water temperature.
  • Cast-iron headers with copper finned tube heat exchanger standard. Brass headers and cupro-nickel tubes available as options. AB 1953 compliant.
  • Sidewall venting capable. No extractor needed for most applications.
  • Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.
  • Status display and on-board diagnostic center, English, no codes.
  • Certified under SCAQMD Rule 1146.2. Meets all Low NOx regulations.
  • Model 2002C available for natural gas only. Other models available for natural gas or propane.
  • Optional patented FlexGas system allows the unit to be plumbed for natural gas and propane. Switch operation from one fuel to the other with the turn of a key, without shutting down the unit.
  • Cascade control of up to 8 units, no external sequencer required.
  • Cascade in parallel or sequential modulation modes.


The Hi-Delta SureRack™ vertical stacking system allows you to double your heating capacity without doubling the overall footprint.  The easy to assemble SureRack system comes disassembled for easy transportation and mobility at the jobsite.  The location of the vent connection on the Hi-Delta is modular to allow the boilers to be stacked vertically with no offset.  The powder coated, heavy duty construction is ideal for indoor or outdoor installations.

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