A.O. Smith ATO-540H-P Technical Documents
Page 1 of 2
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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