This outdoor non-condensing commercial model has a maximum flow rate of 9.8 GPM at a 35 degree F temperature rise. It features an optional multi-system capability, which can link up to 6 NC199OD units and produce a 1.2 million BTU input. The heat exchanger is manufactured with commercial grade copper and is built to last. This propane commercial model heats water up to 185 degree (F) and meets federal and state air quality standards, which are below 20 PPM.

• Commercial model is for outdoor installations only
• Heat exchanger is 25% thicker piping than standard models
• Units can be linked together by using either the optional 2-units quick connect or multi-unit system controller for up to 6-units (sold separately)
• Gas consumption ranges from 16,000 to 199,900 BTUh, and can go up to 1.2 million BTUh (for 6-unit multi-system) with stable combustion provided by the industrys first dual-flame burner
• 5-years limited warranty on the heat exchanger and parts, 1-year labor warranty
• 0.82 uniform efficiency factor
• ENERGY STAR qualified tankless water heater is highly efficient and uses up to 40% less energy than storage water heater models
• Includes remote thermostat that can precisely adjust the output temperature from 100 185 degree F
• Safety features include flame sensor, overheat prevention device, lightning protection device, and freeze protection
• ENERGY STAR rated propane commercial tankless water heater