A.O. Smith Dura-Power Den & Del Bedienungsanleitung

A 213.0C

Revised August 2002

COMMERCIAL ELECTRIC WATER HEATERS

DEN & DEL MODELS

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®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.

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.

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.

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.

DEL MODELS DEN MODEL

ELEMENT AVAILABILITY CHART

Input 120V 208V 240V 277V 480V

1,500 YES YES YES YES —-

2,000 YES YES YES YES YES

2,500 YES YES YES YES YES

3,000 YES YES YES YES YES

3,500 —- —- YES —- —-

4,000 —- YES YES YES YES

4,500 —- YES YES YES YES

5,000 —- YES* YES* YES* YES*

5,500 —- —- YES* —- —-

6,000 —- YES** YES YES 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.

Printed in U.S.A.

A 214.0C

A. O. Smith Corporation reserves the right to make product changes

or improvements at any time without notice.

A. O. Smith Enterprises Ltd.

Stratford, Ontario

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

in Canada: 800-265-8520

SUGGESTED SPECIFICATIONS

The water heater(s) shall be Dura-Power Model(s) No. ____________ as manufactured by A. O. SMITH or an approved equal. Heater(s) shall be rated

at _____ KW, _____ volts, _____ phase, 60 cycle AC, and listed by Underwriters’ Laboratories. Tank(s) shall be _____ gallon capacity. Heater(s) shall

have 150 psi (1034 kPa) working pressure and be equipped with extruded high density anode rod. 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 1600°F (870°C).

Electric heating elements shall be medium watt density with zinc plated copper sheath. Each element shall be controlled by an individually mounted

thermostat and high temperature cutoff switch. The outer jacket shall be of baked enamel finish and shall be provided with full size control

compartment for performance of service and maintenance through hinged front panels and shall enclose the tank with foam insulation. Electrical

junction box with heavy duty terminal block shall be provided (except on 120V & 277V [no junction box on DEL-6 thru 20]). The drain valve shall be

located in the front for ease of servicing. Heater tank shall have a three year limited warranty as outlined in the written warranty. Fully illustrated

instruction manual to be included.

Recovery capacities at 100°F rise equal: for non-simultaneous element operation = 4.1 gal. x KW of one element; for

simultaneous element operation = 4.1 gal. x 2/3 KW of both elements. For other rises multiply element KW as

previously explained by 410 and divide by temperature rise. Full load current for single phase = total watts + voltage.

Tank Approx.

No. of Capacity A B C D Shipping Weight

Models Elements US Gals. Litres inches mm inches mm inches mm inches mm Lbs. Kg.

DEL-6 1 6 23 15 1/2 394 14 1/4 362 11 279 - - 35 15.9

DEL-10 1 10 38 18 1/4 464 18 457 12 1/2 318 - - 54 24.5

DEL-15 1 15 57 26 660 18 457 20 1/2 521 - - 58 26.3

DEL-20 1 20 76 22 1/4 565 21 3/4 552 15 3/8 391 - - 73 33.1

DEL-30 2 30 114 30 7/8 784 21 3/4 552 24 1/8 613 8 203 100 45.4

DEL-40 2 40 151 32 1/4 819 23 1/4 591 25 9/16 649 8 203 125 56.7

DEL-50 2 50 189 32 1/4 819 23 1/4 591 25 1/8 638 8 203 166 75.3

DEN-30 1 30 114 34 1/2 876 20 1/4 514 - - 8 203 98 44.5

DEN-40 2 40 151 45 1/8 1146 20 1/2 521 - - 8 203 113 51.3

DEN-52 2 50 189 54 7/8 1394 20 1/2 521 - - 8 203 131 59.4

DEN-66 2 66 250 60 3/4 1543 21 3/4 552 - - 8 203 176 79.8

DEN-80 2 80 303 59 3/8 1508 24 610 - - 8 203 211 95.7

DEN-120 2 119 450 62 7/16 1586 29 3/8 746 - - 8 203 326 147.9

ROUGH-IN DIMENSIONS IN INCHES AND MILLIMETERS

RECOVERY CAPACITIES

Element U.S. Gallons/Hr and Litres/Hr at TEMPERATURE RISE INDICATED

Wattage INPUT F° 40F° 60F° 80F° 100F° 120F°

(Upper/Lower) KW C° 22C° 33C° 44C° 56C° 67C°

NON-SIMULATANEOUS OPERATION

/1500 GPH 15 10 8 6 5

1.5 LPH 58 38 29 23 19

/2000 GPH 20 14 10 8 7

2.0 LPH 77 51 38 31 26

/2500 GPH 25 17 13 10 8

2.5 LPH 96 64 48 38 32

3000/3000 GPH 30 20 15 12 10

3.0 LPH 115 77 58 46 38

4000/4000 GPH 41 27 20 16 14

4.0 LPH 153 102 77 61 51

4500/4500 GPH 46 30 23 18 15

4.5 LPH 173 115 86 69 58

5000/5000 GPH 51 34 25 20 17

5.0 LPH 192 128 96 77 64

6000/6000 GPH 61 41 30 24 20

6.0 LPH 230 153 115 92 77

SIMULATANEOUS OPERATION

3000/3000 GPH 61 41 30 24 20

6 LPH 230 153 115 92 77

4000/4000 GPH 81 54 41 32 27

8 LPH 307 205 153 123 102

4500/4500 GPH 91 61 46 36 30

9 LPH 345 230 173 138 115

5000/5000 GPH 101 68 51 41 34

10 LPH 384 256 192 153 128

6000/6000 GPH 122 81 61 49 41

12 LPH 460 307 230 184 153

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