The Dyna Max HS consists of a fired condensing boiler with up to 97% efficiency and was developed for residential and commercial usage. It is available in hydronic heating, hot water supply and combination models.

Units offer plastic venting up to 100 feet, and up to 150 PSI relief valves. There is an onboard digital operating control and unit is fully modulating with 5:1 turndown and a stainless steel heat exchanger. Unit is available natural gas or LP with a vertical or horizonal thru wall exhaust vent with 3 air intake options for either outside air sealed direct, outside air or indoor air. Unit has very low NOx and has a fail safe high limit along with a manual reset.  Other highlights include direct spark ignition, boiler circulating pump, neutralizer kit and zero clearance to combustibles.

Control panel features include multi-line LCD display for temperature readings and status boiler response as well as boiler faults in text format. Unit offers hydronic heating with outdoor rest or remote enable signal and an instantaneous domestic hot water priority with plate heat exchanger. There is analog input signal (4-20mA or 0-10-Vdc), and a lead lag operation up to 8 boilers. Boiler modulates to shut down if flue gas temperatures are too high and there are alarm contacts and a system sensor included. There is a 15-item error lockout history and alert history, along with a Fahrenheit/Celsius temperature readout.



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MJD Combustion Sales Inc. is the vision of its president Ray Bazini. With a team total of over 80 years of combined dedicated experience servicing the New York Metropolitan area, MJD Combustion Sales, Inc. has proudly built a business specializing in providing the best equipment and expertise for a complete boiler room solution.


We use an integrated approach to understand whole building design, performance issues, systems gaps and solutions. We consider end-to-end building-management systems, HVAC mechanical solutions, and renewable and sustainable remedies to optimize available resources. We address chronic energy issues facing existing buildings and retrofit them with long-term energy goals in mind.


Address: 514 Meacham Ave., Elmont, NY 11003

Phone: 516-327-4870


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