A.O. Smith Dura-Power Den & Del Instruction Manual

Designed for use as a recovery heater having its
own storage tank. Available in upright standard
models (DEN) and lowboy models (DEL).
FEATURES
GLASS-LINED TANK - Thirteen sizes; 6 thru 119 gallon
(22 thru 450 liter) capacity. Tank interior is coated with
glass specially developed by A. O. Smith Ceramic
Research for water heater use. Tanks rated 150 psi
(1034 kPa) working pressure; tested at 300 psi (2068
kPa). Foam insulation provides maximum energy
savings by minimizing radiant standby heat loss.
ELEMENTS - Zinc plated copper sheaths for longer life.
Medium watt density; means lower surface temperature
to minimize scale build-up and more surface to heat
water. Element sizes from 1.5 to 6 KW. Maximum input
12 KW (see chart on back).
STANDARD VOLTAGES - 120, 277 single phase and
208, 240 and 480V unbalanced three-phase delta;
easily converted to single-phase at terminal block
(except 208V with 6000 watt elements). Single element
heater, single-phase only.
TERMINAL BLOCK - Factory installed. Just bring the
service to heater and connect to block. Terminal block
not supplied on 120V & 277 volt models.
CONTROLS - Temperature control (adjustable through
a range of 110° to 170°F [43-77°C]) and manual reset
high temperature cutoff per element (dual element
models). Factory wired for non-simultaneous operation;
easily converted to simultaneous element operation
(three phase models only).
OPTIONAL
GOLDENROD ELEMENTS - All DEN & DEL models are
available with the Goldenrod
(patent pending). Goldenrod
and 6 times the scaling resistance of standard incoloy
elements. Goldenrod
warranty against failure due to lime scale build-up.
ELEMENT AVAILABILITY CHART
Input 120V 208V
1,500 YES
2,000 YES
2,500 YES
3,000 YES
3,500 —-
4,000 —-
4,500 —-
5,000 —- YES*
5,500 —-
6,000 —- YES**
NOTE: DEL-6 not available in above 2.5 KW.
DEL-6 not available in 480V.
* Not available in DEL-10, DEL-15 and DEN-30.
** A6 non-simultaneous circuit only.
Revised August 2002
24K gold plated elements
®
elements provide long life
®
elements carry a three-year
®
240V 277V 480V
YES YES YES
YES YES YES YES
YES YES YES YES
YES YES YES YES
—- YES —-
YES YES YES YES
YES YES YES YES
YES* YES* YES*
—- YES* —-
YES YES YES
COMMERCIAL ELECTRIC WATER HEATERS
Meets or exceeds the requirements of ASHRAE 90.1b-1992
Standard for energy efficiencies.
See page C 029.0 for service wiring and fuse selection.
DEL MODELS
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.
—-
OTHER STANDARD FEATURES
—-
• Simplified circuitry, color coded for ease of service •
Anode rod for maximum corrosion protection • Cabinet
has bonderized undercoat with baked enamel finish •
Top inlet and outlet openings • Drain valve.
DEN & DEL MODELS
DEN MODEL
LIMITED WARRANTY OUTLINE
®
A 213.0C