Standard Features
- Condensing technology - Unprecedented 0.95 Energy Factor - Durable Heat Exchanger: Uses HRS35 copper for primary heat exchanger and stainless steel #316L for secondary heat exchanger - Approved with ULC S636 PVC, CPVC or polypropylene venting in addition to Cat. III/IV stainless steel - Vent with 3" (up to 70 feet) or 4" (up to 100 feet) - 0"clearance to combustibles - Integrated control and diagnostics - Air Fuel Ratio (AFR) Sensor - Factory-installed power cord - Internal freeze-protection system (JWT-540H-DV has dual protection) - High altitude installation (up to 10,100 ft.)