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The Aspen and Aspen Light Commercial condensing boilers feature a 10:1 turndown ratio, up to 96 percent AFUE and low emissions.
With a stainless steel, vertical firetube heat exchanger, the line includes seven sizes between 85 and 399 MBH, with a 155 MBH combi available. All sizes can be wall-or floor-mounted. The Aspen (85-270 MBH) has top and bottom supply/return/gas connections for flexibility (non-combi models). The touch-screen control on the Aspen Light Commercial (320 and 399 MBH) can be swapped with the boiler logo badge for optimal ergonomics in wall-mount installations.
Each model is equipped with advanced Sage2.3 controls, which provides further energy savings, system optimization and short-cycle prevention. In the light commercial models, the controls also make for simple lead/lag configuration in multiple-boiler applications.
The 3-in-1 vent connection and split voltage junction box with fused connection boards add further versatility and ease of installation.
U.S. Boiler Co.
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