Frequently Asked Questions

The auto reset high limit has a trip point of 160°F. The manual reset high limit has a set point of 200°F.
The boiler can be operated on application requiring water temperatures between 85°F to 140°F.
Element failure is very rare and can be attributed to poor water quality. However, in the case of element failure the heat exchanger should be replaced with the exact kW type that matches the kW output of the boiler. Ex) A 14.4 kW boiler should have a 14.4kW heat exchanger replacement.
The pH level is very important to test. This will extend the longevity of the boiler while maintaining reliability and efficiency. The best pH for NextGen Boilers is a level between 6-7. Too high of pH can corrode components.
The heat exchanger is made of stainless steel (304 type).
The total capacity is 1.06 gallons whereas the heat exchanger is .5 gallon capacity.
Yes, keep in mind that the viscosity of the freeze protection fluid can result in lower BTU output and also can change the flow characteristics of the circulator pump. Do not use more than 50% ratio of propylene glycol.
The pump is not a one size fits all. Each designer should take into account the Disposable/Available Pump Head curve found on page 4 of the NextGen Boiler installation manual. Failure to comply with this curve may result in problems with heating the application properly. Depending on how the system is designed, the primary pump can handle most applications where a 20 Delta T is used. Note that the 14.4 kW model likely will require a secondary pump when installed with hydraulic separator or closely spaced tees.
Yes, the post purge sequence is programmed for 20 second pump operation after the thermostat temperature has been satisfied and opens the TT call for heat on the boiler.
The boiler will resume normal operation once 240 VAC power is restored. The control panel will continue to hold the memory of the pre-programmed set points set by the user.