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Weil McLain Ultra Boilers
Weil McLain Series 3 Ultra gas boiler 93% AFUE rating, highest efficiency comfort heating, models UG-80, UG-105, UG-155, UG-230, UG-310. The Weil Mclain Ultra Boiler is a gas fired water boiler with cast aluminum heat exchanger, Venturi mixing body mixes air and gas providing higher efficiency, designed to operate in low temperature condensing applications, outdoor reset and domestic hot water priority standard.
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