Hi Delta SS Hydronic Boilers, HD101-HD401

Raypak's family of Hi Delta ss Hydronic Boilers, HD101-HD401, feature copper finned tube heat exchangers with cast-iron headers, with all indoor and outdoor models certified.

Features:

All models indoor/outdoor certified.
Patented burner “security blanket” enhances staged combustion, minimizes installation, start-up issues, and protects burners from metal fatigue.
85% AFUE (84%TE - H3 - HD401)
105ºF minimum inlet water temp.
Copper finned tube heat exchanger with cast-iron headers; Cupro-nickel tubes available, optional brass headers available.
2-Stage operation. Electronic controller with outdoor reset on models HD101 - HD301
vSidewall venting ready. No extractor needed for most applications.
Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.
Certified to SCAQMD Rule 1146.2.
Available for natural gas or propane.

Specification

- TruSeal® direct vent
- Sealed combustion chamber
- 100% Factory fire-tested
- Efficiency:
  - HD101 - HD301 85% AFUE
  - HD401 - 84% Thermal
- Maximum outlet temperature: 240°F
- Minimum non-condensing inlet temperature: 105°F
- Thermal-shock proof heat exchanger
- Limited twenty-year thermal shock warranty
- Limited ten-year closed-system heat exchanger warranty
- Status display LED’s
- PolyTuf powder-coated cabinet
- No combustible floor shield required
- SCAQMD rule 1146.2 certified fan-assisted – ultra-low NOx < 20 ppm
- Patented burner security blanket
- Proudly assembled in the USA