A.O. Smith ATIO-710-P Technical Documents

Brand: A.O. Smith

Model: ATIO-710-P

Category: Water heaters & boilers

Type: Technical Documents

Heavy-Duty Commercial Gas

Tankless Water Heaters

ATIO-710-N

ATIO-710-P

ATIO-710-AN

ATIO-710-AP

Page1of2

September 2013

CANCG14000

TANKLESS HEAVY-DUTY COMMERCIAL MODELS

Fully modulating, gas-fired, tankless water heaters specifically designed for

heavy-duty commercial applications. Can be installed as indoor with exhaust only,

or converted to a direct vent. Capable of supplying domestic hot water systems

and/or combined domestic and heating applications (local codes dictate proper

compliance). Multiple units can be combined in a system of water heaters to

provide for larger applications such as hotels, large restaurants and apartment

complexes.

FEATURES

HEAT EXCHANGER IS CONSTRUCTED OF HRS35 COMMERCIAL-

GRADE COPPER

Stronger than standard copper and more resilient against erosion and heat stress

CONTINUOUS MAXIMUM FLOW RATES UP TO 9.0 GPM

EASY-LINK UP TO 4 UNITS WITH NO REMOTE REQUIRED

Multi-link up to 20 units with TM-MC01 (multiple unit controller)

AVAILABLE FOR NATURAL GAS OR PROPANE

ASME MODELS AVAILABLE

SAFETY FEATURES:

Built in Freeze Protection

Manual Reset Hi Limit (Set at 194°F)

Overheat Cutoff Fuse

Inlet, Outlet & Mixing Thermistors for Constant Temperature Monitoring

GFI Fuse & Surge Absorber

Power Supply Connection

VENTING AND COMBUSTION

4” Category III Stainless Steel

Vertical or Horizontal Installation

Air Fuel Ratio Rod

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

Power Vent

Electronic Ignition - No Pilot Light

4” Combustion Air Intake (with optional kit)

OPTIONAL ACCESSORIES

Multi-Unit Controller (Multi-Unit System, 5-20 units)

Remote Temperature Controller

Direct Vent Conversion Kit

Pipe Cover

Concentric Vent Kits

Full Line of Venting

Isolation Valve Kit (includes Pressure Relief Valve)

WARRANTY

10-year limited warranty on heat exchanger in commercial applications

5-year warranty on all parts

ANSI Z21.10.3 CSA4.3

Heavy-DutyCommercialGas

Tankless Water Heaters

September 2013 Page 2of2

www.hotwatercanada.ca CANCG14000

ForTechnical Information call 1-888-479-8324.A.O. Smith Corporationreserves theright to make product changes or improvements withoutprior notice.

TANKLESS HEAVY-DUTY COMMERICAL MODELS

8-7/8” (226mm)

4-1/2” (114mm)

18-1/2” (470mm)

15-3/4” (399mm)

7” (179mm)

)mm626(”8/5-42

)mm006(”8/5-32

1-1/2” (40.9mm) COLD

5-7/8” (147mm) GAS

1-5/8” (42mm) 120v

5-7/8” (149mm)HOT

1-1/8” (27.8mm)

3-1/8” (80.8mm)

4-5/8” (118.3mm)

6-1/4” (159mm)

All dimensions are in inches.

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

* ASME models

**Current numbers based on factory testing, 0.4 GPM required for continuousfireafter initial ignition.

***Category III required

Pressureonly relief valve requires (Min.240,000 BTUs. 150 PSI).

CLEARANCES:

Top 12”, Bottom 12”, Front 24”, Back 1”, Sides 2”

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

020406080100 120 140

Flow Rate Vs. TemperatureRise

Flow Rate (gpm)

Temperature Rise (°F)

10.08.06.04.02.00.0

Flow Rate (gpm)

Pressure Loss (psi)

Head Feet

Above shown rate is basedon single unit only

Pressure Drop

Set temperature of 145° or lower Set temperatureof 150°orhigher

Set temperature of 145° or Lower Set temperature of 150° or higher

MODEL

NUMBER

FUEL

TYPE

GASCONSUMPTION

INPUT

THERMAL

EFFICIENCY

INLET GAS

PRESSURE

GPM**

DIMENSIONS

(INCHES)

VOLT AMP FLUE***

INTAKE

(OPTIONAL)

HOT/COLD

GASCONN.

APPROX.

SHIPPING

WEIGHT

(LBS)

MIN.

BTU/H

MAX.

BTU/H

MIN.

W.C.

MAX.

W.C.

HEIGHT WIDTH DEPTH

ATIO-710-N Natural 24,000 240,000 82%5.0 10.5 0.5-9.0120 0.94 4” O.D. 4” O.D. 3/4” NPT66

ATIO-710-P Propane 24,000 240,00084% 8.014.00.5 - 9.0 120 0.944”O.D.4”O.D.3/4 ”NPT 66

ATIO-710-AN*Natural 24,000 240,00082% 5.010.50.5 -9.0 1200.944”O.D.4”O.D.3/4 ”NPT 66

ATIO-710-AP* Propane 24,000 240,000 84% 8.014.00.5 - 9.0 23-5/818-1/2 8-7/8120 0.944”O.D.4”O.D.3/4 ”NPT 66

Specification

Waterheater(s) shall be Model _________________ as manufactured by A. O. Smith. Thewater heater(s)shall be acoppercoilintegral finand tube construction with quick releasebrass or

bronze waterways. Heater(s) willbe factory assembled and tested. Theheatershall be vented with 4” Stainless steel CategoryIII vent pipe adistance nottoexceed 50’(equivalent) feet

terminating vertically or horizontally as prescribed. Intake air with optional direct vent kit may be of such material as ULC s636 PVC or CPVC, galvanized B-Vent, corrugated aluminum or

stainless steel or Category IV stainless steelnot to exceed a total of 50’ (equivalent). The heater(s) shall be controlled by onboard solid state printed circuit board monitoring incoming and

outgoing temperatures with factory-installed thermistors, sensing and controlling flow rate to set point temperature with control both air and gas mixture inputs to maintain thermal

combustion efficiency. Unit also consists of ground fault interrupter, inline fusing, spark ignition and sensor system, aluminized stainless steel burners, air-fuel ratio rod, Hi limit switch,

modulating and proportional gas valves, freeze protection sensor and heating blocks and overheat cutoff fuses. The water heater(s) shall be CSA listed, meets the energy efficiency

requirements of ASHRAE 90. 1b-1992.

23-5/818-1/2 8-7/8