A.O. Smith 505 User Manual

Size:
585.05 Kb
Download

A. O.SMITH’S

INNOVATION ON DEMAND

A. O. Smith’s complete line of tankless gas water heaters

A Variety of Sleek, Compact Indoor Models To Choose From

ATI-305-N(Natural Gas),ATI-305-P(Propane)

ATI-705-N(Natural Gas),ATI-705-P(Propane)

ATI-505-N(Natural Gas),ATI-505-P(Propane)

ATI-705A-N(Natural Gas),ATI-705A-P(Propane) Commercial

 

305 and 505 Models

 

705 Model

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All Models Available

In Both Natural Gas

And Propane Designs

Model Dimensions

 

 

305 and 505

705

Dimension

Description

inches (mm)

inches (mm)

 

 

 

 

 

A

Width

14 (355.6)

18.5

(470)

B

Depth

9.6 (244.5)

9.3 (230.5)

 

 

 

 

 

 

C

Height - Unit

22.9

(582)

23.6

(600)

 

 

 

 

 

D

Height - with brackets

25.5 (648.2)

25.2

(640)

E

Hot Water Outlet - from wall*

3.6

(91)

4.5 (115)

 

 

 

 

 

F

Hot Water Outlet - from center

4.3 (110)

2.4

(61)

 

 

 

 

 

 

G

Cold Water Inlet - from wall*

2.8

(70)

3.9

(99)

 

 

 

 

 

 

H

Cold Water Inlet - from center

1.1

(27)

2.0

(52)

 

 

 

 

I

Gas Connection - from wall*

4.3 (109)

2.4 (61.2)

 

 

 

 

 

J

Gas Connection - from center

3.5

(89)

4.3 (110)

 

From base to gas connection

1.6

(40)

1.6

(40)

K

From base to cold connection

2.0

(50)

2.0

(50)

 

From base to hot connection

1.6

(41)

1.6

(41)

*This is the minimum dimension from the wall. The wall bracket is adjustable to allow an additional 1.57 inches (40mm).

A. O. Smith On-DemandGas Water Heaters

Residential and Commercial Product Features:

Innovative Technology

A variety of indoor installation options

Continuous hot water on demand (up to 9.8 GPM)

Whole house water heating solution

Direct electronic ignition – no pilot light

On-boarddiagnostics and safety monitoring

Interior sealed combustion

(does not use interior combustion air)

Excellent Performance

Outlet Flow Data

12-yearlimited warranty on heat

 

exchanger, 5-yearwarranty on all parts

 

Models available that meet requirements of ASME Boiler and Pressure Vessel Code

Energy Efficiency

Up to 84% thermal efficiency, providing significant energy cost savings

Model Specifications

Model

 

305

 

505

 

705

 

 

 

 

 

 

 

Minimum Gas Consumption Btu/h

 

15,000

 

19,000

 

 

 

 

 

 

Maximum Gas Consumption Btu/h

199,000 Natural Gas

 

237,000

 

 

 

190,000 Propane Gas

 

 

Hot water capacity (Min - Max)*

 

0.6 - 5.3 GPM

 

0.6 - 8.5 GPM

 

0.6 - 9.8 GPM

 

 

 

(2.3 - 20.1 L/min)

 

(2.3 - 32.0 L/min)

 

(2.3 - 37 L/min)

Hot water capacity (45°F rise)

 

 

 

7.4 GPM (28.0 L/min)

 

 

 

 

 

5.3 GPM

 

Natural Gas

 

8.8 GPM

 

 

 

(20.1 L/min)

 

7.1 GPM (26.9 L/min)

 

(33.5 L/min)

 

 

 

 

 

Propane Gas

 

 

Default Temperature Setting (no controller)

 

 

120º F (49º C)

 

 

 

 

 

 

 

 

 

Remote Controller Default Temperature Setting

 

 

104º F (40º C)

 

 

 

 

 

 

 

 

Maximum Temp Setting (Commercial**)

160º F (71º C)

 

185º F (85º C)

 

 

 

 

 

 

 

 

Maximum Temp Setting (Residential)

 

 

140º F (60º C)

 

 

 

 

 

 

 

 

 

Minimum Temperature Setting

 

 

 

98º F (37º C)

 

 

 

 

 

 

 

 

 

Weight

 

 

50 lb (23 kg)

 

55 lb (25 kg)

 

 

 

 

 

 

 

 

Efficiency Rating

 

 

84%

 

 

 

 

 

 

 

 

 

 

Noise level

 

 

 

49 dB

 

 

 

 

 

 

 

 

 

Electrical Consumption

 

Normal

 

79 W

 

99 W

 

 

 

 

 

 

 

 

 

 

Standby

 

2.8 W

 

2 W

 

 

 

 

 

 

 

 

 

 

Anti-frostProtection

 

100 W

 

116 W

 

 

 

 

 

 

 

 

By-PassControl

 

Fixed

 

Electronic

 

Minimum Gas Supply Pressure

 

Natural Gas

5.0 inch W.C.

 

 

 

Propane

8.0 inch W.C.

 

Maximum Gas Supply Pressure

 

Natural Gas

10.5 inch W.C.

 

 

 

 

 

 

 

 

 

 

Propane

13.5 inch W.C.

 

 

 

 

 

 

 

Type of Appliance

 

Direct Vent, Temperature controlled continuous flow gas hot water system.

 

 

 

 

 

 

Operation

 

With or without remote controls, mounted in kitchen, bathroom, etc.

 

 

 

 

 

 

Approved Gas Type

 

Natural Gas or Propane - Ensure unit matches gas type it's being installed on.

 

 

 

 

 

 

Connections

 

Gas Supply: 3/4˝ MNPT, Cold Water Inlet: 3/4˝ MNPT, Hot Water Outlet: 3/4˝

 

 

 

 

 

 

 

Ignition System

 

Direct Electronic Ignition

 

 

 

 

 

 

 

Electric Connections

 

Appliance: AC 120 Volts, 60Hz. Remote Control: DC 12 Volts (Digital)

 

 

 

 

 

 

 

Water Temperature Control

 

Simulation Feedforward and Feedback.

 

 

 

 

 

 

 

Water Supply Pressure

 

Minimum Water Pressure: 20 PSI (Recommended 30-80PSI for maximum

 

 

 

 

 

 

 

 

Maximum Water Supply Pressure

 

150 PSI

 

 

 

 

 

 

 

 

 

 

 

Remote Control Cable

 

Non-PolarizedTwo Core Cable (Minimum 22 AWG)

 

 

 

 

 

 

 

 

 

* Minimum flow may vary slightly depending on the temperature setting and the inlet water temperature. ** for commercial and hydronic applications requiring higher temperatures

Specifications are subject to change without prior notice.

The maximum inlet gas pressure must not exceed the value specified by the manufacturer. The minimum value listed is for the purpose of input adjustment.

500 Tennessee Waltz Parkway Ashland City, TN 37015www.hotwater.com

AMGSS00207 ©2007 A. O. Smith Corporation

A. O. Smith reserves the right to make product changes or improvements at any time without notice.

Printed in U.S.A