A.O. Smith ATIO-910-AN, ATIO-910-N, ATIO-910-AP, ATIO-910-P Technical Documents

Heavy-Duty Commercial Gas Tankless Water Heaters

TANKLESS HEAVY- DUTY COMMERCIAL MODELS

Designed speciﬁcally for heavy-duty commercial applications. Fully modulating, gas-ﬁred, tankless, water heaters with sealed combustion (optional) and power vented ﬂue. Capable of supplying hot water for domestic hot water systems (directly or indirectly) using water storage tanks, recirculations systems, and/or combined domestic & heating applications (local codes dictate proper compliance).

FEATURES

HEAT EXCHANGER IS CONSTRUCTED OF HRS35 COMMERCIALGRADE COPPER

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

■

CONTINUOUS MAXIMUM FLOWRATES UP TO 14.5 GPM

EASY-LINK UP TO 4 UNITS

Multi link up to 10 units with TM-MC01 (no multiple controller needed)

■

AVAILABLE FOR NATURAL GASOR PROPANE (LP)

ASMEMODELS AVAILABLE

SAFETY FEATURES:

■ Built in Freeze Protection

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

■ Overheat CutoffFuse

■ Inlet and Outlet Thermistors and Mixing for Constant Temperature Monitoring

■ GFI, Fuse & Surge Absorber

■ Flame Sensor

VENTING AND COMBUSTION

■ 5” Category III Stainless Steel

■ Vertical or Horizontal Installation

■ Air Fuel Ratio Rod

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

■ PowerVent

■ Electronic Ignition -No Pilot Light

■ 5” Combustion Air Intake (with optional kit)

OPTIONAL ACCESSORIES

■ Multi-Unit Controller (5-10 units)

■ Remote Temperature Controller

■ Direct Vent Conversion Kit

■ Pipe Cover

■ Concentric Vent Kit

■ Full Line of Venting

■ Isolation Valve Kit (including Pressure Relief Valve)

WARRANTY

■ 10-year limited warrantyon heat exchanger in commercialapplications

■ 5-year limited warranty on all parts

ATIO-910-N

ATIO-910-P

ATIO-910-AN

ATIO-910-AP

ANSI Z21.10.3 CSA 4.3

September 2013

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CANCG14001

Heavy-Duty Commercial Gas Tankless Water Heaters

TANKLESS HEAVY-DUTY COMMERCIAL MODELS

MODEL

NUMBER

FUEL TYPE

GAS CONSUMPTION

INPUT

MIN.

BTU/H

MAX.

BTU/H

THERMAL

EFFICIENCY

INLET GAS PRESSURE

MIN.

MAX.

W.C.

GPM**

DIMENSIONS

(INCHES)

HEIGHT WIDTH DEPTH

VOLT AMP FLUE*** INTAKE

HOT/COLD

GASCONN.

APPROX.

SHIPPING

WEIGHT

(LBS)

ATIO-910-N Natural 15,000 380,000 80% 5.0 10.5 0.5-14.5 25-1/4 24-7/8 12-1/4 1201.485”O.D.5”O.D.1”NPT 113 ATIO-910-P Propane 15,000 380,000 82% 8.0 14.0 0.5-14.5 25-1/4 24-7/8 12-1/4 1201.485”O.D.5”O.D.1”NPT 113

ATIO-910-AN* Natural 15,000 380,000 80% 5.0 10.5 0.5 -14.5 25-1/4 24-7/8 12-1/4 1201.485”O.D.5”O.D.1”NPT 113 ATIO-910-AP* Propane 15,000 380,000 82% 8.0 14.0 0.5-14.5 25-1/4 24-7/8 12-1/4 1201.485”O.D.5”O.D.1”NPT 113

All dimensions are in inches. *ASMEmodels **Current numbers based on factory testing, 0.4 GPM required for continuous fire after initial ignition. 15 - 150 psi water pressure. Pressure only relief valve requires (Min. 380,000 BTUs. 150 PSI). Min40 PSI or above recommended for maximum flow. *** Category III required

CLEARANCES:

Top 12”, Bottom 12”, Front 24”, Back 0.5”, Sides 2”

Flow Rate(gpm)

25 45 65 85 105 125 145

FlowRate Vs. Temperature Rise

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

Above shown rate is based on single unit only

Temperature Rise (°F)

1/2" (11.9mm)

12-1/4" (311.5mm)

4-7/8" (122.9mm)

2-1/2" (62.1mm)

24-7/8" (632.9mm)

15" (381mm)

8" (203mm)

5" (127mm)

Pressure Loss(psi)

0.0

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

Pressure Loss

5.0

Flow Rate (gpm)

10.0

15.0

Head Feet

1/2" (12.5mm)

4-3/8" (110.8mm) GAS

-3/8" (137.3mm) HOT

6-3/4" (171.3mm) 120V

7-5/8" (194.3mm) COLD

1-5/8" (40mm) COLD

5-7/8" (150mm) HOT

25-1/4" (642mm)

4" (100mm) 120V

7-3/8" (186mm)GAS

28-7/8" (734mm)

Specification

Water heater(s) shall be Model _________________ as manufactured by A. O. Smith. The water heater(s) shall be a copper coil in tegral fin and tube construction with quick release brass or bronze waterways. Heater(s) will be factory assembled and tested. The heater shall be vented with 5” Stainless steel Category III vent pipe a distance not to exceed 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 steel not 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, exceeds the energy efficiency requirements of ASHRAE 90. 1b-1992.

ForTechnical Informationcall1-888-479-8324.A.O.Smith Corporation reserves theright to make productchanges or improvements withoutprior notice.

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