Brochure
40
Dura-Max
®
DB/DW
Gas Models
Up To 82% thermal efficiency hot water
supply and hydronic heating boilers
The Dura-Max
®
series offers excellent performance and low-
profile design flexibility for both new construction and
retrofit applications. A double-row, extruded-finned copper
tube heat exchanger provides exceptional heat transfer
efficiency. Each unit features a small footprint with a built-in
draft diverter for extra clearance to simplify installation.
Reliable, quiet, drawer-mounted stainless steel burners resist
corrosion, improve access for easy maintenance.
100% All Non-Ferrous Waterways
All waterways 100% copper, brass or bronze...
won’t rust, resists thermal shock
Heavy-duty bronze castings and copper heat
exchange tubes
Bronze removable return bends for easy access and
inspection of individual tubes
Drawer Mounted, Stainless Steel Burners
Quiet operation and efficient, reliable design
Protects against corrosion and condensation
deterioration common to aluminum burners
Easy slide-out burner tray simplifies cleaning and
maintenance
Compact, Low Profile Design
Built-in draft diverter provides extra clearance in tight,
retrofit installations
Clean, compact jacket design for easy access
and assembly
Cool to touch and approved for combustible floors
Gasketless Wet Section
Unique “O” ring design compresses to form water-
tight seal positioned away from and outside the
combustion chamber
Isolated location offers optimum protection and years
of service without gasket leaks
Intermittent Electronic Ignition
Eliminates standing pilot, saves energy
Includes power ON/OFF switch
Provides flame failure response in less than one second
Meets the thermal efficiency and standby loss
requirements of the U.S. Department of Energy
and current edition of ASHRAE/IESNA90.1
5-Year Heat Exchanger Limited Warranty
(Domestic hot water supply)
10-Year Heat Exchanger Limited Warranty
(Hydronic heating applications)
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