A.O. Smith ATO-540H-P Technical Documents

A.O. Smith Water Heater Technical Documents - ATO-540H-P.
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October 2012

                                                                                                                         CANRG46805

TANKLESS HIGH-EFFICIENCY

CONDENSING MODELS

FEATURES

   Condensing technology provides significant energy cost savings

PRIMARY HEAT EXCHANGER IS CONSTRUCTED OF HRS35 COMMERCIAL 

GRADE COPPER

   Stronger than standard copper and more resilient against erosion

SECONDARY HEAT EXCHANGER IS MADE OF TYPE 316L STAINLESS STEEL

   Provides additional protection against corrosion

 

CONTINUOUS MAXIMUM FLOW RATES UP TO 9.0 GPM

CAN BE USED IN RESIDENTIAL AND 

LIGHT COMMERCIAL APPLICATIONS

ENERGY STAR® QUALIFIED

MODELS INCLUDE REMOTE CONTROL AND POWER CORD 

EASY-LINK UP TO 4 UNITS

    With no additional parts or accessories needed

ELECTRONIC IGNITION-NO PILOT LIGHT

BUILT-IN DISPLAY SHOWS OPERATING TEMPERATURE ALONG WITH

DIAGNOSTIC ERROR CODES 

SAFETY FEATURES

    Air-Fuel Ratio (AFR) Sensor 

    Exhaust & Water Temperature Safety Controls 

    Overheat Cutoff Fuse

INTERNAL FREEZE PROTECTION SYSTEM

POWER DIRECT VENT DESIGN

    4” Pipe Vents up to 50 Equivalent Feet or 3” Pipe Vents up to 25 Equivalent Feet 

    ULC s636 approved PVC, CPVC, or Polypropylene Pipe for Intake and Exhaust  

 

(solid core only)

    Category III Stainless Steel venting can also be used

    Vertical or Horizontal installation

ACCESSORIES

    Remote Temperature Controller (Included) 

    Neutralizer Kit 

    Plumbing Installation Kits

    PVC Intake Adaptor 

    Concentric Termination

WARRANTY 

    12-year limited warranty on heat exchanger in residential applications 

    5-year limited warranty on heat exchanger in commercial applications 

    5-year warranty on all parts

Residential / Light Commercial 

Gas Tankless Water Heaters 

ATI-520H-N

ATI-520H-P

ANSI Z21.10.3

CSA 4.3

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