AO Smith ATO-540H-N 199,000 Btu Residential/Commercial Condensing Natural Gas Outdoor Tankless Water Heater, 15 Yr Heat Exc / 5 Pts Warranty

Tankless High Efficiency Condensing Water Heaters

Ultra-Low NOx gas tankless water heaters with condensing technology featuring an unprecedented 0.95 Energy Factor which lowers operating costs and is environmentally friendly

FEATURES:-

Continuous Maximum Flow Rates Up To 10.0 GPM

Energy Star® Qualified

Available IN Natural Gas Or Propane (LP)

540 Models

• Can be used in residential and commercial applications
• Easy-link up to 4 heaters
• Multi-link up to 20 heaters
Indoor Model
• Includes integrated temperature controls and advanced diagnostics to simplify troubleshooting
• Factory-installed power cord
Outdoor Model
• Includes a wall mount temperature remote controller and advanced diagnostics to simplify troubleshooting
Durable Heat Exchanger
• Primary heat exchanger is constructed of a commercial-grade copper that is more resilient to erosion. Copper is 25x better at heat transfer than stainless steel thus stabilizing outgoing water temperatures quicker
• Secondary Heat Exchanger is made of Type 316L Stainless Steel to protect against corrosion
Common Vent Up To 8 Units Complies With Lead Free Standards Safety Features
• Air-Fuel Ratio (AFR) Sensor
• Exhaust & Water Temperature Safety Control
• Overheat Cut-Off Fuse
Internal Freeze Protection System Power Direct Vent Design
• Category III or IV venting can be used
• Exhaust, 3” PVC Venting up to 70 Feet or 4” PVC Venting up to 100 Feet
• Provides flexible venting with PVC, CPVC, or ABS Pipe for Intake and Exhaust (solid core only). Canadian Installations Require ULCS636 Listed PVC or CPVC Pipe for Venting
Accessories
• Pipe Cover
• Neutralizer Kit
• Isolation Valve Kits
• Concentric Termination
• Product Preservers® Anti-Scale System
• Multi-Unit Controller (540 Model Only)
• Commercial Remote Temperature Control (540 Model Only)