After years of research and development, Raypak's engineering team has designed a superior sealed combustion boiler for domestic hot water or hydronic heating in commercial and industrial environments.

The Raypak HI DELTA™ offers optimum thermal delivery with low NOx levels, multiple firing options and venting flexibility in a compact footprint. It is available in a range of capacities from 300,000 to 2,340,000 BTU to meet most applications.

FEATURES/BENEFITS

OPTIONAL TRUSEAL™ DIRECT VENT
Fan-assisted design meets stringent indoor air quality and safety standards of the Uniform Mechanical Code (sections 603c and 1509) and ASHRAE 15-1994 (8.14a) in regard to refrigeration machinery rooms.

85% EFFICIENCY
Provides the exact gas, air and heat transfer area to operate at the maximum efficiency allowed by AGA in a non-condensing gas appliance.

LOW NOX LEVELS
Exceptionally low NOx levels meet all local, state and national codes regulating NOx emissions of gas appliances and boilers. NOx emissions will vary from 10-20 ppm, depending on combustion air quality and fuel composition.

FLOATING RETURN HEADER
Makes heat exchanger immune to thermal shock.

ALL COPPER AND BRONZE WATERWAYS
Bronze headers provide a completely rust-free environment for open domestic systems. Especially relevant to the restaurant, hospitality, radiant flooring and process industries. Procelainized cast-iron headers available as an option.

SINGLE, 2-STAGE OR MULTIPLE-STAGE FIRE
Load tracking capability in heating systems, especially when used with the proprietary Y2 and B6000 controls, provides the ultimate in comfort and energy utilization.

INSTALLATION AND VENTING FLEXIBILITY
Horizontal or vertical vent, take your pick - or no vent at all, since the HI DELTA can be installed either indoors or outdoors.

BUILT TO LAST - BUILT FOR SERVICE
HI DELTA's unique enclosed header design results in the industry's most easy-to-service boiler, with effortless access to all components.