A.O. Smith ATI-110-P Technical Documents

Brand: A.O. Smith

Model: ATI-110-P

Category: Water heaters & boilers

Type: Technical Documents

Residential / Commercial Gas

Tankless Water Heaters

Fully modulating, gas fired, tankless water heater specifically designed for

residential and commercial applications. Supplies hot water to domestic hot

water systems (directly or indirectly) which can be used with storage tanks,

recirculation systems, hydronic heating systems, radiant floor heating systems,

and/or combined domestic and heating applications.

FEATURES

CONTINUOUS MAXIMUM FLOW RATES UP TO 10.0 GPM

ENERGY STAR

QUALIFIED

AVAILABLE IN NATURAL GAS OR PROPANE (LP)

OUTDOOR MODELS INCLUDE REMOTE CONTROL AS A STANDARD FEATURE

INDOOR MODELS INCLUDE BOTH A REMOTE CONTROL AND POWER

CORD AS STANDARD FEATURES

LOW NOX EMISSIONS

COMPLIES WITH LEAD FREE STANDARDS

HEAT EXCHANGER (510 MODELS) IS CONSTRUCTED OF COMMERCIAL-

GRADE COPPER

SAFETY FEATURES:

■ Built in Freeze Protection

■ Manual Reset Hi Limit (Set at 194°F)

■ Overheat Cutoff Fuse

■ Inlet and Outlet Thermistors for Constant Temperature Monitoring

■ Flame Sensor

EASY-LINK UP TO 4 UNITS (510 MODELS):

■ With No Additional Parts or Accessories Needed

VENTING AND COMBUSTION

■ 4” Category III Vent

■ Vertical or Horizontal Installation

■ 50’ Max Length, 5 elbows max (90° elbows = 5’ equivalent length)

■ Power Vent

■ Electronic Ignition - No Pilot Light

■ 3” Combustion Air Intake (with optional kit)

OPTIONAL ACCESSORIES

■ Complete Line of Category III Venting

■ Recess Box (outdoor)

■ Pipe Cover

■ Direct Vent Conversion Kits (indoor)

■ Isolation Valve Kits

■ Backflow Preventer

■ Concentric Termination Kits

WARRANTY

■ 15-year limited warranty on heat exchanger in residential applications

■ 10-year limited warranty on heat exchanger in commercial applications

■ 5-year warranty on all parts

OUTDOOR MODELS

ATO-110, ATO-310, ATO-510

INDOOR MODELS

ATI-110, ATI-310, ATI-510

ANSI Z21.10.3 CSA 4.3

A. O. Smith Corporation • 500 Tennessee Waltz Parkway • Ashland City, TN 37015 • 800-527-1953 Toll-free USA Page 1 of 4

www.hotwater.com AOSBG45201

510 models

AOSBG45201 Tankless Spec Sheet_AOS Effex Res HE Spec Sheet 8/19/14 1:20 PM Page 1

Residential / Commercial Gas

Tankless Water Heaters

Page 2 of 4

www.hotwater.com AOSBG45201

15-150 psi water pressure. 40 psi or above recommended for maximum flow.

*Category III Required

**Current numbers based on factory testing, 0.5 GPM required for activation, 0.4 GPM required for continuous fire after initial ignition.

Pressure only relief valve required (Min. 200,000 BTUs. 150 PSI).

MODEL

NUMBER

FUEL

TYPE

GAS CONSUMPTION

INPUT

ENERGY

FACTOR

INLET GAS

PRESSURE

MAX

GPM**

DIMENSIONS

(INCHES)

VOLT AMP FLUE*

INTAKE

(OPTIONAL)

HOT/COLD

GAS CONN.

APPROX.

SHIPPING

WEIGHT

(LBS)

MIN.

BTU/H

MAX.

BTU/H

MIN.

W.C.

MAX.

W.C.

HEIGHT WIDTH DEPTH

ATI-110-N

Natural 19,500 140,000 0.82 5.0 10.5 6.6 20 1/4 13 3/4 7 3/4 120 0.61 4” O.D. 3” O.D. 3/4” NPT 38

ATI-110-P

Propane 19,500 140,000 0.82 8.0 14.0 6.6 20 1/4 13 3/4 7 3/4 120 0.61 4” O.D. 3” O.D. 3/4” NPT 38

ATO-110-N

Natural 19,500 140,000 0.82 5.0 10.5 6.6 20 1/4 13 3/4 7 3/4 120 0.61 N/A N/A 3/4” NPT 38

ATO-110-P

Propane 19,500 140,000 0.82 8.0 14.0 6.6 20 1/4 13 3/4 7 3/4 120 0.61 N/A N/A 3/4” NPT 38

ATI-310-N

Natural 11,000 190,000 0.82 5.0 10.5 8.0 20 1/4 13 3/4 9 1/2 120 0.73 4” O.D. 3” O.D. 3/4” NPT 43

ATI-310-P

Propane 11,000 190,000 0.82 8.0 14.0 8.0 20 1/4 13 3/4 9 1/2 120 0.73 4” O.D. 3” O.D. 3/4” NPT 43

ATO-310-N

Natural 11,000 190,000 0.82 5.0 10.5 8.0 20 1/4 13 3/4 9 1/2 120 0.73 N/A N/A 3/4” NPT 43

ATO-310-P

Propane 11,000 190,000 0.82 8.0 14.0 8.0 20 1/4 13 3/4 9 1/2 120 0.73 N/A N/A 3/4” NPT 43

ATI-510-N

Natural 11,000 199,000 0.82 5.0 10.5 10.0 20 1/4 13 3/4 9 1/2 120 0.75 4” O.D. 3” O.D. 3/4” NPT 45

ATI-510-P

Propane 11,000 199,000 0.82 8.0 14.0 10.0 20 1/4 13 3/4 9 1/2 120 0.75 4” O.D. 3” O.D. 3/4” NPT 45

ATO-510-N

Natural 11,000 199,000 0.82 5.0 10.5 10.0 20 1/4 13 3/4 9 1/2 120 0.75 N/A N/A 3/4” NPT 45

ATO-510-P

Propane 11,000 199,000 0.82 8.0 14.0 10.0 20 1/4 13 3/4 9 1/2 120 0.75 N/A N/A 3/4” NPT 45

ATI-110 INDOOR DIMENSIONS

CLEARANCES: Top 12”, Bottom 12”, Front 4”, Back 1”, Sides 2”

ATO-110 OUTDOOR DIMENSIONS

CLEARANCES: Top 36”, Bottom 12”, Front 24”, Back 1”, Sides 2”

13-3/4" (350mm)

10" (254mm)

-1/4" (56mm)

21-3/8" (544mm)

20-1/4" (520mm)

1-3/4" (45mm)1-3/4" (45mm)

1-7/8" (47mm)

COLD 3-1/8" (79mm)

HOT 5-1/4" (133mm)

120V 1-3/8" (36mm)

GAS 4-7/8" (124mm)

4" (101 mm)

13-3/4" (350mm)

10" (254mm)

21-3/8" (544mm)

20-1/4" (520mm)

1-3/4" (45mm)1-3/4" (45mm)

1-7/8" (47mm)

COLD 3-1/8" (79mm)

HOT 5-1/4" (133mm)

120V 1-3/8" (36mm)

GAS 4-7/8" (124mm)

7-7/8" (203mm)

1-5/8" (43mm)

2-1/4" (56 mm) COLD

3-7/8" (98mm) GAS

4-7/8" (124mm) HOT

" (26mm)

4-7/8" (123mm) 120V

7-3/4" (196mm)

2-1/4" (56 mm) COLD

-7/8" (98mm) GAS

4-7/8" (124mm) HOT

" (26mm)

" (102mm)

4-7/8" (123mm) 120V

7-3/4" (196mm)

2-1/4" (57mm)

ATI-310 and ATI-510 INDOOR DIMENSIONS

CLEARANCES: Top 12”, Bottom 12”, Front 4”, Back 1”, Sides 2”

ATO-310 and ATO-510 OUTDOOR DIMENSIONS

CLEARANCES: Top 36”, Bottom 12”, Front 24”, Back 1”, Sides 2”

13-3/4" (350mm)

10" (254mm)

1-3/4" (45mm) 1-3/4" (45mm)

1-3/8" (36mm)

21-3/8" (544mm)

20-1/4" (520mm)

1-7/8" (47mm)

HOT 5-1/4" (133mm)

120V 1-3/8" (36mm)

GAS 4-7/8" (124mm)

COLD 3-1/4" (84mm)

4" (101 mm)

13-3/4" (350mm)

10" (254mm)

1-3/4" (45mm)

21-3/8" (544mm)

20-1/4" (520mm)

1-7/8" (47mm)

HOT 5-1/4" (133mm)

120V 1-3/8" (36mm)

GAS 4-7/8" (124mm)

COLD 3-1/4" (84mm)

1-5/8" (43mm)

5" (128mm)

7-7/8" (203mm)

4-3/8" (113mm)

19-3/8" (493mm)

COLD 2-7/8" (71mm)

1" (26mm)

HOT 6-1/2" (164mm)

9-1/2" (241mm)

120VAC 3-7/8" (99mm)

GAS 5-1/4" (135mm)

4-3/8" (113mm)

1-5/8" (43mm)

19-3/8" (493mm)

COLD 2-7/8" (71mm)

1" (26mm)

HOT 6-1/2" (164mm)

9-1/2" (241mm)

120VAC 3-7/8" (99mm)

GAS 5-1/4" (135mm)

AOSBG45201 Tankless Spec Sheet_AOS Effex Res HE Spec Sheet 8/19/14 1:20 PM Page 2

Residential / Commercial Gas

Tankless Water Heaters

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www.hotwater.com AOSBG45201

100

Head (ft)

Pressure Loss (psi)

Flow Rate (gpm)

020406080100120140

Flow Rate (GPM)

emperature Rise (

°F

)

Indoor/Outdoor Pressure Loss Comparison of Flow Rate vs. Temperature Rise

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0

100

120

Head (ft)

Pressure Loss (psi)

Flow Rate (gpm)

020406080100120140

Flow Rate (GPM)

Temperature Rise (°F)

Indoor/Outdoor Pressure Loss Comparison of Flow Rate vs. Temperature Rise

0.0 2.0 4.0 6.0 8.0 10.0 12.0

100

120

Flow Rate (gpm)

Head (ft)

Pressure Loss (psi)

Set temperature of 122°F or lower

Set temperature of 131°F or higher

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

020406080100120140

)

Te mp era ture R ise (°F)

Indoor/Outdoor Pressure Loss

Comparison of Flow Rate vs. Temperature Rise

110 models

310 models

510 models

Flow Rate (gpm)Flow Rate (gpm)

Flow Rate (gpm)

AOSBG45201 Tankless Spec Sheet_AOS Effex Res HE Spec Sheet 8/19/14 1:20 PM Page 3

Residential / Commercial Gas

Tankless Water Heaters

For Technical Information call 1-877-737-2840. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

Specification for the 510

The fully modulating, on-demand, gas fired tankless water heater(s) shall be A. O. Smith Tankless Water Heater model ATI-510 or ATO-510, having a maximum input rating of 199,000

Btu/h and available in NG or LP. The heater shall have ¾ in. male NPT water and gas connections. The inlet gas supply pressures shall be 5.0 in. WC (min.) up to 10.5 in. WC (max) for

NG and 8.0 in. WC (min.) up to 14 in. WC (max.) for LP. The heater(s) shall be supplied with a temperature remote, 9007603005, that can be installed up to 400 ft. from the heater

using 18 gauge (minimum) control wire. The temperature remote shall provide diagnostic information, fault history, and heater set temperature. The heater(s) shall operate using 120

V / 60 Hz power source. The indoor heater(s) will incorporate a factory installed power cord.

The indoor heater(s) shall be vented with 4” diameter Category III vent pipe with a length not to exceed 50 ft. (equivalent), terminating horizontally or vertically. The indoor heater(s)

can be direct vented with optional direct vent conversion kit, 9007667005, using 3” diameter pipe. The intake pipe may use material such as PVC, ABS, aluminum, or Category III pipe

and cannot exceed 50 ft. (equivalent) length. The outdoor heater(s) shall be constructed with an integral exhaust vent on the front of the heater.

The water heater(s) shall use an copper, fin tube heat exchanger with quick release brass or bronze waterways. The heater(s) shall be controlled by an onboard solid-state printed

circuit board which uses the following factory installed components: thermistors to monitor water temperature; a flow sensor to measure flow rate; a flame sensor to monitor

combustion; an Air-Fuel Ratio Rod to measure and adjust air input in order to maintain optimal combustion efficiency. The heater also consists of inline fusing and surge absorbers

for electrical surge protection, an electronic spark igniter, aluminized stainless steel burners, a hi-limit temperature switch, modulating gas valve, dual freeze protection that will

automatically fire the heater and use heating blocks to protect the heat exchanger, and an overheat cutoff fuse.

The heater(s) can manifold to Easy-Link up to 4 heaters to provide additional capacity. The Easy-Link controls shall be built onto the onboard solid-state printed circuit board and does

not require external controls. The linking control wire shall be supplied with the heater. The Easy-Link control shall modulate the system for the most efficient performance. The Easy-

Link control shall rotate the priority heater every 12 hours of operation time or 100 starts for balanced duty/cycle operation.

The heater(s) shall be CSA approved for sale in the United States and Canada, ENERGY STAR® qualified with a minimum energy factor of 0.82, meets the energy efficiency requirements

of the U. S. Department of Energy and ASHRAE 90.1-2007, complies with Low NOx emissions of 40 ng/J or 55 ppm, and shall be certified to NSF 5 Standards.

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