- Maximum flow rates up to 10.0 GPM
- X3 Scale Prevention Technology—Eliminates annual descaling and prevents scale buildup
- Maintains like-new performance up to three times longer than traditional models
- Environmentally friendly operation with low NOx emissions
- Copper heat exchanger provides 25X better heat transfer than stainless steel
- Field convertible from natural gas to propane with included conversion kit
- Recirculation capability with external pump and crossover valve compatibility
- Built-in safety features including freeze protection, overheat cutoff fuse, and flame sensor
- Electronic ignition system eliminates the need for a pilot light
- 15-year limited warranty on heat exchanger
The Proline® XE Non-Condensing Concentric Vent tankless water heaters with X3® Scale Prevention Technology deliver reliable and efficient performance for residential hot water systems. Equipped with innovative X3® Technology, these water heaters prevent scale buildup, eliminating the need for annual descaling and maintaining like-new performance for up to three times longer than traditional models. With a copper heat exchanger that offers 25X better heat transfer than stainless steel, the units stabilize outgoing water temperature quickly while reducing pressure drop across the heat exchanger. Designed for indoor use, these heaters comply with lead-free standards and are recirculation-capable, making them suitable for a variety of applications.
These Proline® XE models comply with SCAQMD Rule 1146.2 and SJVACPD Rule 4308 for low NOx emissions, ensuring environmentally friendly operation. The GT-310CX3 and GT-510CX3 models offer maximum flow rates of 8.0 GPM and 10.0 GPM, respectively, and are field convertible from natural gas to propane using the included conversion kit. Safety features such as built-in freeze protection, overheat cutoff fuses, and constant temperature monitoring enhance reliability and user confidence. With a 15-year limited warranty on the heat exchanger for residential applications, these water heaters provide long-lasting performance and peace of mind.
