Description
ENERGY STAR® qualified
15-year limited Heat Exchanger Warranty, 5-year parts warranty, 1-year labor warranty for Residential applications
6-year limited Heat Exchanger Warranty, 5-year parts warranty, 1-year labor warranty for Commercial applications
Integrated Recirculation Pump - 1/2" pipe - 100'; 3/4" pipe - 500'
Primary heat exchanger is constructed of a commercial gradecopper that is more resilient to erosion.
Secondary heat exchanger is made of type 316L stainless steel to protect against corrosion.
Complies with SCAQMD 1146.2 Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
Easy-Link with up to three other 540H units to increase flow capacity
Common Vent up to 8 units
Condensing Indoor model
Safety features include Air-Fuel ratio (AFR) sensor, freeze protection, overheat cut-off fuse, exhaust & water temperature safety control, and troubleshooting diagnostic codes