A.O. Smith ATI-110U 200, ATI-310U 200, ATI-510U 200+, ATO-110U 200, ATO-310U 200 User Manual

...

0 (0)

COMMERCIAL-GRADE

RESIDENTIAL / COMMERCIAL GAS WATER HEATERS

ULTRA LOW-NOx NON-CONDENSING TANKLESS WATER HEATERS

COMMERCIAL-GRADE RESIDENTIAL / COMMERCIAL

Fully modulating, gas fired, tankless water heater with sealed combustion and power vented flue. Indoor and outdoor models available for residential and commercial applications. Supplies hot water to domestic hot water systems and can be used with water storage tanks, recirculation systems, and/or combined domestic & heating applications.

FEATURES:

FIELD CONVERTIBLE FROM NATURAL GAS TO PROPANE

COMPLIES WITH SCAQMD RULE 1146.2 AND OTHER AIR QUALITY MANAGEMENT DISTRICTS

WITH SIMILAR NOx EMISSION REQUIREMENTS OF 14 ng/J OR 20 PPM

MAXIMUM FLOW RATES UP TO 10.0 GPM

COPPER HEAT EXCHANGER

•25x better heat transfer than stainless steel thus stabilizing outgoing water temperature quicker and reducing pressure drop across the heat exchanger

INDOOR AND OUTDOOR MODELS AVAILABLE

OUTDOOR MODELS INCLUDE REMOTE CONTROL AS A STANDARD FEATURE

INDOOR MODELS INCLUDE A BUILTIN TEMPERATURE CONTROLLER AND A FACTORY-INSTALLED POWER CORD AS STANDARD FEATURES

ATI-510U AND ATO-510U CAN BE USED IN BOTH RESIDENTIAL AND COMMERCIAL APPLICATIONS

•Easy-Link up to 4 units (no additional parts or accessories needed)

•Multi-link up to 20 units

COMPLIES WITH LEAD FREE STANDARDS

SAFETY FEATURES:

•Built-in Freeze Protection

•Manual Reset Hi Limit (Up to 194°F)

•Overheat Cutoff Fuse

•Inlet and Outlet Thermistors for Constant Temperature Monitoring

•Air Fuel Ratio Rod

•Flame Sensor

VENTING AND COMBUSTION

•4” Category III Stainless Steel

•3” Combustion Air Intake

•60’ Max Length, 6 Elbows max (90° elbows = 5’ equivalent length)

•Power Vent or Power Direct Vent

•Vertical or Horizontal Installation

•Electronic Ignition - No Pilot Light

OPTIONAL ACCESSORIES

•Complete Line of Stainless Steel Venting

•Recess Box (outdoor models)

•Pipe Cover

•Isolation Valve Kit

•Backflow Preventer

•Concentric Termination Kits

WARRANTY

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

•5-year limited warranty on heat exchanger in commercial applications

•5-year limited warranty on all parts

INDOOR MODELS

ATI-110U, ATI-310U, ATI-510U

OUTDOOR MODELS

ATO-110U, ATO-310U, ATO-510U

(510U models only)	ANSI Z21.10.3

© June 2017 A. O. Smith Corporation. All Rights Reserved	Page 1 of 4
www.hotwater.com \| 800-527-1953 Toll-Free USA \| A. O. Smith Corporation \| 500 Tennessee Waltz Parkway \| Ashland City, TN 37015	AOSBG45100

A.O. Smith ATI-110U 200, ATI-310U 200, ATI-510U 200+, ATO-110U 200, ATO-310U 200 User Manual

COMMERCIAL-GRADE

RESIDENTIAL / COMMERCIAL GAS WATER HEATERS

Gas Consumption Input

Inlet Gas Pressure**

Maximum

Hot/Cold

Gas

Dimensions in Inches

Approx

Model Number

Type*

Minimum

Maximum

Minimum

Maximum

UEF

Height

Width

Depth

Shipping

BTU/H

in. W.C.

GPM***

Connections

Connection

Weight (lbs)

Indoor Models

ATI-110U

200

Natural

15,000

140,000

4.0

10.5

0.81

6.6

3/4" NPT

20-1/2

13-3/4

ATI-310U

200

Natural

15,000

190,000

4.0

10.5

0.82

3/4" NPT

20-1/2

13-3/4

ATI-510U

200+

Natural

15,000

199,000

4.0

10.5

0.82

3/4" NPT

20-1/2

13-3/4

Outdoor Models

ATO-110U

200

Natural

15,000

140,000

4.0

10.5

0.81

6.6

3/4" NPT

20-1/2

13-3/4

9-1/2

ATO-310U

200

Natural

15,000

190,000

4.0

10.5

0.82

3/4" NPT

20-1/2

13-3/4

9-1/2

ATO-510U

200+

Natural

15,000

199,000

4.0

10.5

0.81

3/4" NPT

20-1/2

13-3/4

9-1/2

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

*Field gas convertible from natural gas to propane. Conversion kit is included with the heater.

**For Propane, minimum inlet gas pressure is 8.0 in W.C. and maximum inlet gas pressure is 14.0 in W.C.

***Current numbers based on factory testing; 0.5 GPM required for activation; 0.4 GPM required for continuous fire after initial ignition. +Suitable for commercial applications.

Indoor models are certified from sea level to 10,100 ft. elevations. Outdoor models are certified from sea level to 6,000 ft. elevation.

INDOOR MODEL DIMENSIONS		OUTDOOR MODEL DIMENSIONS
CLEARANCES: TOP 12”, BOTTOM 12”, FRONT 4”, BACK 1”, SIDES 3”		CLEARANCES: TOP 36”, BOTTOM 12”, FRONT 24”, BACK 1”, SIDES 3”
FRONT VIEW	SIDE VIEW	FRONT VIEW	SIDE VIEW

	13-3/4" (350 mm)
	10" (254 mm)
1-3/4" (45 mm)	1-3/4" (45 mm)
3-5/8"(93 mm)	1-3/8" (36 mm)
21-1/2" (545 mm) 20-1/2" (520 mm)
1-7/8" (47 mm)	120 VAC 1-5/8" (40 mm)
HOT 4-5/8" (116 mm)	COLD 1-5/8" (41 mm)
	GAS 5" (127 mm)

	4-3/8" (113mm)
2-1/4" (58 mm)	mm)
	19-3/8" (493
	1" (26 mm)
	120 VAC 3" (75 mm)
	GAS 5-1/4" (135 mm)
	COLD 6" (153 mm)
	HOT 6" (153 mm)
	10" (256 mm)

D3U-OS	13-3/4" (350 mm)
	10" (254 mm)
	8" (203 mm)
1-3/4" (45 mm)	1-3/4" (45 mm)

1/2" (545 mm)

1-5/8" (43 mm)

21-

HOT 4-5/8" (116 mm)	120 VAC 1-5/8" (40 mm)
	COLD 1-5/8" (41 mm)
	GAS 5" (127 mm)

19-3/8" (493 mm)

1" (26 mm)

120 VAC 3" (75 mm)

GAS 5-1/4" (135 mm)

COLD 6" (153 mm)

HOT 6" (153 mm)

9-1/2" (241 mm)

BOTTOM VIEW

HOT 5"(127mm)
120VAC 1-7/8" (49 mm)	GAS 4-1/4" (109 mm)	COLD 5" (127 mm)

TOP VIEW

13-1/8" (334 mm)

5-1/8" (130 mm)

4-3/8" (113 mm)

BOTTOM VIEW

HOT 5" (127 mm)

120VAC 1-7/8" (49 mm) GAS 4-1/4" (109 mm) COLD 5" (127 mm)

TOP VIEW

13-1/8" (334 mm)

Page 2 of 4

AOSBG45100

+ 2 hidden pages