Commercial Gas Water Heaters
UP TO 96% THERMAL EFFICIENCY, DIRECT VENT
FEATURES
The A. O. Smith Cyclone Xi family of products represents the industry’s most technologically advanced commercial water heaters. The innovative Cyclone Xi design takes performance to its highest level with efficiencies of 95% and 96%. Models are available from 120,000 BTUs up to 500,000 BTUs. In addition, the Cyclone Xi features an Intelligent Control
System making it the smartest water heater in the industry.
Cyclone Xi provides outstanding hot water output, with dramatic savings on operating costs compared to units with standard 80% efficiency. A. O. Smith’s leading-edge engineering delivers conventional power-vent or power direct-vent versatility, low NOx
emissions and excellent space-saving characteristics. Powered anodes, standard on all Cyclone Xi models, provide superior tank protection for years of trouble free operation.
INTELLIGENT CONTROL SYSTEM WITH LCD DISPLAY
nExclusive A. O. Smith designed control system
nProvides detailed water heater status information
nPrecise temperature control
nBuilt-in diagnostics
nRun history information
nCyclone water heaters are iCOMM™ compatible and can be monitored from remote locations. Call 1.888.WATER02 for more information.
SUBMERGED COMBUSTION CHAMBER,
WITH HELICAL HEAT EXCHANGER COIL
nPositioned in center of tank, surrounded by water to virtually eliminate radiant heat loss from chamber
nSpiral heat exchanger keeps hot burner gases swirling, uses centrifugal force to maximize efficiency of heat transfer to water in tank
nSpiral shaped heat exchanger reduces the accumulation of lime scale; maintains higher efficiency performance over time.
POWERED ANODES STANDARD ON ALL MODELS
nProvides long-lasting tank protection in varying water conditions
nAnodes are of a permanent design and do not require replacement unless damaged
PERMAGLAS® ULTRA COAT™GLASS LINING
nExclusive process provides superior protection against corrosion
nBoth sides of heat exchanger coil are lined for protection against flue gas condensate inside coil
MECHANICAL VENTING VERSATILITY
nConventional powerventing or powerdirect venting
nVents vertically or through sidewall
nDirect-vent intake and exhaust pipe can terminate separately outside building, or through single opening, using concentric vent assembly
nUses inexpensive PVC, CPVC or ABS pipe for intake and exhaust. Canadian installations require ULC S636 listed PVC or CPVC pipe for intake and exhaust.
HIGH EFFICIENCY PRE-MIX POWERED BURNER
nDown-fired pre-mix burner provides optimum efficiency and quiet operation
nTop-mounted radial burner design ensures optimum combustion efficiency
Revised August 2011
BTH-120
through
BTH-500
BTH-120-250
Low Lead Compliant
BTH-300-500
(optional)
Low Lead Compliant
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AOSCG10200
Commercial Gas Water Heaters
OTHER CYCLONE Xi FEATURES
SPACE-SAVING DESIGN FOR INSTALLATION FLEXIBILITY
nReduced footprint, ease of service, protection from water damage in case of flooding
nEasy to remove top cover for convenient access to serviceable parts
n0˝ installation clearances on sides and rear, 1-1/2˝ installation clearance on top, 4˝ alcove installation clearance in front Handhole Cleanout of unit
nHandhole cleanout allows easy access to tank interior for cleaning
n0˝ clearance to combustibles, approved for installation on combustible floors
CODES AND STANDARDS
nCSA certified and ASME rated T&P relief valve
nMaximum hydrostatic working pressure: 160 PSI
nBTH-120-250 Models are design-certified by CSA International, according to ANSI Z21.10.3 - CSA 4.3 Standards governing storage-type water heaters.
nBTH-300-500 Models are design-certified by Underwriter’s Laboratories (UL), Inc., according to ANSI Z21.10.3 - CSA 4.3 standards governing storage-type water heaters.
nMeets or exceeds the thermal efficiency and standby loss reqiurements of the U.S. Department of Energy and current edition ASHRAE/IESNA 90.1
nDesign-certified by Underwriter’s Laboratories (UL), Inc. to NSF standard 5
nComplies with SCAQMD Rule 1146.2 and other Air Quality Management Districts with similar requirements for low NOx emissions
nASME tank construction optional on all models.
THREE-YEAR LIMITED TANK WARRANTY
nFor complete warranty details, consult written warranty shipped with heater, or contact A. O. Smith (5-year extended warranty is optional).
INSTALLATION CONSIDERATIONS
1.Condensate Drain – This is a fully condensing water heater and should be located near a drain to permit proper disposal of condensate.
2.Vent Termination – Exhaust gases of this water heater are less than 140°F. In cold climates water vapor in flue
gases will condense into a cloud of vapor where the vent exits the building. This vapor can gradually discolor exterior building surfaces. Vent termination should be located where this vapor cloud and potential discoloration are not a
concern. Extending the vent termination up to 6 ˝ from the wall helps vapor from being trapped along a building’s face. To avoid this problem, the vent can be terminated on the roof. Always locate vent termination above the maximum snowline, and do not locate vent termination above a walkway.
3.Air Intake – In cold climates, air intake should be located at least four feet from the vent termination of the water heater and any other appliance vents that discharge moisture-laden air (such as clothes dryers). This will help prevent freeze-over of the intake screen required to prevent foreign objects from entering the intake pipe. Air intake should be located above the maximum snowline.
4.Blockage Sensors – The water heater is equipped with sensors to shut it down if blockage of vent or air intake occurs. The water heater control system will display detailed diagnostic information on the LCD screen to help service technicians quickly locate and correct the problem.
5.Noise – Vent terminal should be located away from bedroom windows or other areas where blower noise will be objectionable. Avoid venting into corners or confined areas, which will amplify sound. Anchoring intake or vent pipe to walls or ceilings can cause noise to be transmitted to living areas, and isolation mounts should be used where anchoring is required.
6.Optional Concentric Vent Kit - Helps to minimize unsightly wall/roof penetrations. BTH-120 - 300 vent kit p/n 9006328005
BTH-400 - 500 vent kit p/n 9006144005
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
Revised August 2011 |
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www.hotwater.com |
AOSCG10200 |
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