Brochure

14
Cyclone
®
Xi BTH and
BTX Gas Models
Up to 96% thermal efficiency,
venting flexibility, outstanding value
The A. O. Smith Cyclone Xi is the industry’s most technologically
advanced commercial water heater. The BTH-300, BTH-400 and
BTH-500 models take Cyclone Xi performance to the highest
levels, with up to 96% thermal efficiency, a 130-gallon storage
tank, and inputs of 300,000, 400,000 and 500,00 BTU. For high-
demand applications, 2, 3 or 4 Cyclone units can be installed in a
manifold configuration, delivering total storage up to 520
gallons and total input up to 2 million BTU. 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 sealed combustion power direct vent versatility,
low NOx emissions, and excellent space-saving characteristics.
Submerged Combustion Chamber, With Helical Heat
Exchanger Coil

Positioned in center of tank, surrounded by water to
virtually eliminate radiant heat loss from chamber

Spiral heat exchanger maximizes efficiency of heat transfer
to the water stored in the tank

Top mounted burner and spiral heat exchanger work
together to minimize harmful effects of calcium/lime
accumulation
PermaGlas
®
Ultra Coat
™
Glass Lining

Exclusive process provides superior protection against
corrosion in varying water conditions

Powered Anodes are of permanent design and do not
require replacement unless damaged

Both sides of heat exchanger coil are glasslined for
protection against flue gas condensate inside coil
Advanced Electronic Control System with
LCD Display

iCOMM™ Compatible and can be monitored from remote
locations. Call 1.888.WATER02 for more information

Provides detailed water heater status information

Precise temperature control

Built-in diagnostics

Run history information
Various Venting Options

Conventional and sealed-combustion power venting
(vertical or sidewall) allows for various venting options
(See instruction manual for complete venting installation
instructions and allowable venting lengths)

Direct vent intake and exhaust pipe can terminate
separately outside building or through single opening
using concentric vent assembly

Uses inexpensive PVC, CPVC or ABS pipe for venting
Compliance

Meets the Thermal efficiency and standby loss
requirements of the U.S. Department of Energy and
current edition of ASHRAE/IESNA90.1
Complies with
(models 300,
400 & 500)
(models 120, 150,
199 & 250)
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