The Efficiency You Want And The Reliability
High efficiency boilers were introduced in response
to the energy crisis of the seventies. Most first generation
high efficiency boilers were simply standard units that
had been hurriedly modified to boost efficiency. These
boilers obtained higher efficiencies by permitting steady-state
condensation in the combustion chamber. Failure to adequately
protect the combustion chamber and heat exchanger from
the corrosive effects of condensate meant that most
first generation units failed prematurely.
The units condensed, eventually
corroded, and finally were discarded. Manufacturers
learned from their mistakes. They upgraded materials,
redesigned heat exchangers and refined their manufacturing
techniques. The second generation of high efficiency
boilers, which began to appear in the late eighties,
was a vast improvement. However, second generation units
still experience damage from condensation. Although
the materials used in second generation high efficiency
boilers last considerably longer, they will eventually
succumb to corrosion.
Third Generation Technology
After two decades of trial-and-error, the boiler industry
has finally realized that high efficiency and long product
life can only be obtained by preventing condensation
from occurring in the combustion chamber. Raypak's Advanced
Design Boiler is the first of a new generation of boilers
that can obtain ultra-high efficiency without compromising
product life. The "secret" to the ADB's longevity
is that condensation occurs only in a corrosion-resistant
secondary heat exchanger. The ADB is designed so that
condensation will not occur in the primary heat exchanger
or the combustion chamber. The result is an ultra-high
efficiency product that lasts.
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 150,000 to 2,340,000 BTU
to meet most applications.
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.
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.
Design simplicity,quality materials and meticulous
craftsmanship have earned Raypak a rock-solid reputation
for reliability. While others busily design cost out
of their products, Raypak has continued to engineer
dependability in. Features like thermal shock-proof
heat exchangers with floating return headers are standard.
Burners are made from a high quality stainless steel
alloy that won't corrode or warp. All metal surfaces
are rust protected. Every detail is designed to extend
product life. Every detail improves dependability. Because
every detail matters.
Coppertube Hot Water Supply Boilers
Thermal efficiency 82%. Highest of any atmospheric boiler
Thermal Shock Proof
20-year warranty against thermal shock damage up to
150°F differential. Maximum operating temperature:
A floor load up to 70 lbs/sq. ft. or less.
Cuts fuel costs substantially because the standby and
radiation losses normal to other boilers and tank-type
water heaters are eliminated.
Low Water Operating Temperature
Operates with water temperature as low as 105°F