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Commercial Gas Water Heaters
The Cyclone® HE is a light-duty, power vent, fully condensing commercial gas water heater with an internal
helical heat exchanger, similar to the design of A. O. Smith’s industry-leading Cyclone
heat exchanger helps Cyclone
®
HE achieve 90% thermal efficiency and deliver outstanding hot water output.
®
models. This helical
HELICAL INTERNAL HEAT EXCHANGER
Completely surrounded by water in tank, provides much greater heat transfer
surface than standard straight flue tube
Operates at 90% thermal efficiency, which saves money on operating costs,
increases hot water output compared to standard efficiency water heaters
Minimizes standby losses by trapping heat in the tank
Spiral heat exchanger reduces scale and sediment from forming on water-side surface, which
can reduce energy efficiency over time
VERSATILE POWER VENT DESIGN
Vents using inexpensive PVC, CPVC or ABS pipe. Canadian installations require ULC
S636 listed PVC or CPVC pipe for venting.
2” pipe, vents up to 20 equivalent feet
3” pipe, vents up to 60 equivalent feet
4” pipe, vents up to 120 equivalent feet
MODULAR BLOWER
Equipped with 120 volt, 60 Hz electrical system (rating 5 amps or less), 6-foot cord with
standard 3-prong connector
2” PVC pipe, elbows and condensate drain supplied to connect heat exchanger outlet to blower
PVC Vent Attenuation Assembly (VAA) supplied for applications where extra-quiet operating
environment is essential
HIGH OUPUT WITH SMALL FOOTPRINT
22” diameter, combined with 90% efficiency, 50-gallon tank and 76,000 BTU input means Cyclone HE
can be installed in less space than a larger 75-gallon unit, with equal or better performance
Total height is 70-5/8” to top of unit
SIDE-MOUNTED HOT AND COLD RECIRCULATING TAPS
Allows Cyclone HE to be installed as part of combination space heating/water
heating applications, or any system requiring a recirculating hot water loop
Plugs for the recirculating taps are factory installed
INTELLI-VENT™* GAS CONTROL
Equipped with long lasting silicon nitride hot surface ignitor – no standing pilot
Advanced electronics for more precise control of water temperature and easy-to-understand
system diagnostics
180°F maximum temperature setting
PERMAGLAS® ULTRA COAT™ GLASS LINING
A. O. Smith exclusive process provides superior protection against corrosion
Protects all interior tank surfaces including inside and outside of helical heat exchanger
TWO HEAVY-DUTY ANODE RODS
Provides advanced protection against corrosion
GREEN CHOICE® GAS BURNER
Patented “Eco-Friendly” design reduces NOx emissions and meets less than 40 ng/j
requirements for low NOx
CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE
MAXIMUM HYDROSTATIC WORKING PRESSURE: 150 PSI
CODES AND STANDARDS
Design-certified by Underwriters’ Laboratories according to ANSI Z21.10.3 - 4.3 CSA standards
governing storage-type water heaters
Meets the thermal efficiency and standby loss requirements of the U.S.
Department of Energy and Current Edition of ASHRAE/IESNA 90.1
BTX-80
Series 100
Low Lead Compliant
*Intelli-Vent™ is a registered trademark of Emerson Electric Company
Revised November 2013
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AOSCG10100
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®
Commercial Gas Water Heaters
THREE-YEAR LIMITED TANK WARRANTY
For complete warranty details, consult written warranty shipped with heater
SPECIFICATIONS
BTU
MODEL
NUMBER
BTX-80 76,000
Manifold Pressure: 4.0 inches w.c. (.99 kPa); All models–Maximum Supply Pressure: 14 inches w.c. (3.48 kPa)
Minimum Supply Pressure Natural Gas: 5.0 inches w.c. (1.24 kPa); Minimum Pressure must be maintained under both load
and no-load (dynamic and static) conditions
Approved for installation up to 5300 ft. High alt models available.
Approved for Canada.
INPUT
PER
HOUR
GALLONS
LITRES
Gallons 50 GPH 206 83 59 Lbs. 210
Litres 189 LPH 780 314 223 Kg 95.3
OR
TANK
SIZE
RECOVERY - GALLONS OR
GPH
OR
LPH
LITRES PER HOUR AT
DEGREE RISE
40°F 100°F 140°F
22°C 56°C 78°C
LBS.
OR
KG
SHIPPING
WEIGHT
Rough-In-Dimensions
Top/Side Inlet and Outlet: 3/4” NPT
Gas Inlet: 1/2” NPT
Capacity and Gas and Electrical Characteristics
All models - Maximum Supply Pressure: 14 inches W.C. (3.48kPa)
Minimum Supply Pressure Natural Gas: 5.0 inches W.C. (1.24kPa)
Minimum Pressure must be maintained under both load and no load (static and dynamic) conditions.
SUGGESTED SPECIFICATION
Natural gas water heater(s) shall be A. O. Smith Cyclone HE model # BTX-80, with 90% thermal efficiency, a storage capacity of 50 gallons, an input rating of 76,000 BTUs per
hour, a recovery rating of 83 gallons per hour at 100ºF rise and a maximum hydrostatic working pressure of 150 psi. Water heater(s) shall be of power vent design, using 2”,
3” or 4” PVC pipe for horizontal and/or vertical vent runs. Water heater(s) shall have: 1: Glasslined steel tank construction and a spiral-shaped heat exchanger placed
entirely inside the tank, which shall be glasslined on the flue gas side to protect against acidic condensate. 2: An Intelli-Vent™ gas control system with silicon nitride hot
surface ignitor. 3: A 3-year limited warranty against tank leaks. Water heater(s) shall meet the thermal efficiency and standby loss requirements of the U. S. Department of
Energy and Current Edition of ASHRAE /IESNA 90.1 and be design-certified by UL (Underwriters Laboratories) according to ANSI Z21.10.3-CSA4.3 standards governing storage
tank water heaters.
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 November 2013
www.hotwater.com
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AOSCG 10100
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