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OPTIONS
TANK LININGS
CEMENT – A special formulation of cement providing excel-
lent corrosion protection. Available on 200 gallon and larger
tanks.
EPOXY – A solventless two component epoxy lining applied
to a minimum ten-mil (.010") dry thickness. Available on
200 gallon and larger tanks.
GOLDENROD ELEMENTS – Available with Optional
Goldenrod Elements - All DVE/DHE models are available with
the Goldenrod 24K gold plated elements (patent pending).
Goldenrod Elements provide long-life and five times the
scaling resistance of standard incoloy elements. Goldenrod
Elements carry a three-year warranty against failure due to
scale.
SPECIAL CONSTRUCTION
SILICON BRONZE VESSELS – Are available for special
applications or very corrosive water conditions. Consult fac-
tory for specific sizes.
STAINLESS STEEL VESSELS – Are available for deionized
water. Built with stainless steel under rules of Section IV of
the ASME Boiler and Pressure Vessel Code for operation on
deionized water having a minimum specific resistivity of 10
megohm/cm.
150 OR 160 PSI WORKING PRESSURE – Must be speci-
fied at time of order.
OTHER OPTIONAL FEATURES
TEMPERATURE AND PRESSURE RELIEF VALVES – For
working pressures other than standard; consult factory.
HORIZONTAL OR VERTICAL – See specifications, most
gallon capacities may be obtained in vertical or horizontal
construction.
CIRCULATING PUMP PACKAGE – Circulating pump and
piping sized to turn over entire storage capacity of tank once
each hour. Recommended to optimize available water at
temperature in horizontal tanks particularly where low draw
conditions are anticipated.
OPTIONAL INTERNATIONAL VOLTAGES – 380 and 415
volts three phase.
3-1/2" DIAL TYPE PRESSURE GAUGE – Factory installed.
3-1/2" DIAL TYPE TEMPERATURE GAUGE – Factory in-
stalled.
11" x 15" MANHOLE – Available as option on tanks 700
gallons or smaller.
A. O. Smith Water Products Company, Inc On Line
www.hotwater.com
For Technical information and
Automated fax Service,
Phone: 800-527-1953
ACESS00607
Page 4 of 4
CONTROL OPTIONS
COPPER TUBE TANK HEATER – Double wall copper tube
tank heaters are designed for heating potable water with both
potable or non-potable liquids or steam, and are specifically
engineered for installation in models DVE and DHE for dual
energy applications. Tank heaters have a positive fail-safe
means of leak detection in the event of either tube failure to
prevent mixture of heating medium and potable water. Single
wall heat exchangers are also available. Refer to pages A
412.3 and A 412.4 for more information.
THERMOSTATIC STEP CONTROL – The simplest form of
modulation. Allows elements to be stepped on in groups by
specifying additional thermostats (up to one per contactor).
It is recommended that number of thermostats not exceed
five.
SOLID STATE MODULATING STEP CONTROL – Solid state
electronic control device that modulates input to match load
through progressive sequencing of steps (up to 20 steps with
maximum of one per contactor).
SEQUENCER – Up to 5 stage time delay sequencer pro-
vides for stepping of elements in groups or individually (maxi-
mum of one step per contactor). Units supplied with this
option will have a 120/24 volt control circuit.
TERMINAL BLOCKS – Allows for remote connection to build-
ing demand limiter or other functions.
AUTOMATIC RESET HIGH LIMIT – A control that in the
event of high temperature, interrupts power, de-energizing
elements, automatic reset. (Standard with modulating step
control).
INDICATING LIGHTS – Denotes heating stage(s) in opera-
tion. Up to one light per contactor is available.
OVERRIDE SWITCHES – A simple means of load control
allows all or part of unit input to be controlled manually. Up
to one switch per contactor is available.
SAFETY DOOR INTERLOCK – Prevents opening of control
panel door when heater power supply is on. NOTE: Once
door is opened heater may be energized if necessary for
service diagnosis.
SHUNT TRIP CIRCUIT BREAKER – A safety device (circuit
breaker) which disconnects power to heater in the event of
overcurrent, high temperature or low water level, breaker must
be manually reset.
CIRCUIT BREAKER – A safety device which disconnects
power to the heater in the event of overcurrent.
A Division of A. O. Smith Corporation
A. O. Smith Corporation reserves the right to make product changes
or improvements at any time without notice.
© A. O. Smith Corp., 1999
A. O. Smith
Water Products Company
Irving, TX
Printed in U.S.A.
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