Hi Delta Hydronic Boilers, 302C-902C
Raypak's family of Hi Delta Hydronic Boilers, 302C-902C, feature 84% efficiency, 2-stage operation, and is available in natural gas or propane variants.
BASIC DATA
| Model |
Full Input in BTUH |
Flue Dia. |
| H3-302C and H3-302CD | 300,000 | 5" |
| H3-402C and H3-402CD | 399,000 | 6" |
| H3-502C and H3-502CD | 500,000 | 6" |
| H3-652C and H3-652CD | 650,000 | 8" |
| H3-752C and H3-752CD | 750,000 | 8" |
| H3-902C and H3-902CD | 900,000 | 8" |
Features:
- 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.
- 2-Stage operation.
- 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. 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.
- 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.
