COMMERCIAL ELECTRIC
WATER HEATERS
DVE-52, 80, 120
Designed for use as a recovery heater having its own storage
tank or booster for supplying sanitizing rinse water for
dishwashing.
Meets or exceeds the requirements of ASHRAE 90.1b-1992
Standard for energy efficiencies.
FEATURES
GLASS-LINED TANK - Three sizes; 52, 80 and 119 gallon
capacity. Tank interior is coated with glass specially developed
by A.O. Smith Ceramic Research for water heater use. Tanks
rated at 150 psi working pressure; tested at 300 psi. Foam
insulation reduces costly heat loss. ASME (optional) maximum
working pressure is 160 psi.
ELEMENTS - Heavy duty elements have Incoloy sheaths and
ceramic terminal block for rugged commercial service. Medium
watt density means lower surface temperature to minimize
scale buildup and more surface to heat water. Element sizes
from 2 to 6 KW. Use 3, 6 or 9 elements; maximum input 54 KW.
The design assures proper placement of elements in the tank
to avoid bridging the sheaths with lime or scale deposits.
POWER CIRCUIT FUSING - Protects elements and contactors
from short circuits, overloading or line surges. Meets National
Electric Code requirements (fusing required when current draw
exceeds 48 amps).
STANDARD VOLTAGES - 208, 240 and 480V single-phase and
three phase delta. Convertible from three-phase to singlephase (in field) and vice versa (except 208/54 KW). 277V singlephase also available.
TERMINAL BLOCK - Factory installed. Just bring the service to
the heater and connect to block.
MAGNETIC CONTACTORS - Heavy duty; UL rated 100,000
cycles.
CONTROLS - 120V control circuit is powered by fused
transformer, eliminating need for 120V service connection.
Immersion temperature control adjustable through a range of
60°F to 180°F. Manual reset high temperature cutoff.
• Simplified circuitry, color coded for ease of service • Hinged
control compartment door for quick, easy access • Two anode
rods for maximum corrosion protection • Cabinet has
bonderized undercoat with baked enamel finish • Top outlet,
side inlet and relief valve openings • Nipple and brass drain
valve • A.G.A./ ASME temperature and pressure relief valve.
OPTIONAL
GOLDENROD ELEMENTS - All DVE models are available
with the Goldenrod 24K gold plated elements (patent pending). Goldenrod elements provide long life and 6 times the
scaling resistance of standard incoloy elements. Goldenrod elements carry a three-year warranty against failure
due to lime scale build-up.
ASME
(OPTIONAL)
LIMITED WARRANTY OUTLINE
If the tank should leak any time during the first three
years, under the terms of the warranty, A.O. Smith
will furnish a replacement heater; installation,labor,
handling and local delivery extra.THIS OUTLINE IS
NOT A WARRANTY.
For complete information, consult the written
warranty or A. O. Smith Water Products Company.
MANIFOLD KITS WITH STOP VALVES - Available for multiple
installations.
See page C 029.0 for service wiring and fuse selection.
THERMOSTATIC SEQUENCING CONTROL - Energizes three
elements at a time to prevent line surges when thermostat
calls for heat. Available on units 24 KW and larger.
OPTIONAL INTERNATIONAL VOLTAGES - 380, 415, 480,
575 and 600 volts three-phase available with Y connected
elements.
Revised June 2001
A 203.0
SAMPLE SPECIFICATION
The heater(s) shall be Dura-Power Commercial Electric Model Number_________________as manufactured by A.O. Smith Water Products Company or
equivalent. Heater(s) shall be rated at ______________KW ________V _____________phase, 60 cycle AC listed by Underwriters’ Laboratories and
approved by the National Sanitation Foundation. Tank(s) shall be (52, 80 or 119) gallon capacity with 150 psi working pressure and equipped with dual
extruded high density anodes. All internal surfaces of the heater(s) exposed to water shall be glass-lined with an alkaline borosilicate composition that
has been fused to steel by firing at a temperature range of 1400°F to 1600°F. Electric heating elements shall be medium watt density screw-in type with
Incoloy sheath and ceramic terminal block. Internal power circuit fusing shall be provided. Element operation shall be___________________ (1. simultaneous; or 2. sequenced with thermostats) switched through individual magnetic contactors. Control circuit shall be factory fused and include manual reset
high temperature cutoff switch and thermostat with sensing element in tin-plated well, immersed in water. Control cabinet and jacket shall be of baked
enamel finish and shall provide full size control and element compartment for complete service and maintenance performance through front hinged
compartment door, and enclose tank with foam insulation. 1 1/4" inlet and outlet connection shall be provided. The heater tank shall have a three year
limited warranty and controls and accessories shall have a one year limited warranty as outlined in the written warranty. Fully illustrated instruction
manual to be included. For multiple installation, factory built manifold kits for__________heater installation (maximum of 4 heaters) shall be provided.
Meets ASHRAE 90.1b-1992.
A. O. Smith
Water Products Company
Ashland City, TN
A Division of A. O. Smith Corporation
A.O. Smith Water Products Co., Inc. On Line
www.hotwater.com
For Technical Information and
Automated Fax Service,
Phone: 800-527-1953
A 204.0
A. O. Smith Corporation reserves the right to make product changes
or improvements at any time without notice.
© A. O. Smith Corp., 2001
Printed in U.S.A.
Download PDF