The NTI Vmax is an Energy Star qualified gas modulating boiler with an efficiency rating of 95% AFUE. It uses a stainless steel fire tube heat exchanger for greater heat transfer and efficiency, and a built-in primary loop, circulator and spark ignition are standard features. The unit’s control has a user-friendly display and provides several features, including night setback option, service reminder, lockout and error history, and the ability to cascade up to 16 Vmax boilers. The Vmax is also available in a Plus version that provides both space heating and domestic hot water and features a built-in 16-gallon indirect water heater.
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