The Munchkin Contender wall-hung, ultra-high-efficiency condensing boiler is designed for residential space heating applications. The Energy Star®-rated unit has an efficiency of 93 percent AFUE. The direct-vent, sealed-combustion unit offers a unitary construction that consolidates a high-grade stainless steel condensing heat exchanger, back flue, and water manifold into a single assembly. A lightweight, dent-resistant plastic cabinet encases the unit. All mechanical connections are located at the bottom for easier installation and aesthetics. The fully modulating, ultra-low NOx burner is load matching, so that limits firing to current demand. The boiler requires no chimney or other special venting provisions; venting can be done through a sidewall or a roof with 2-inch Schedule 40 PVC up to 85 feet (intake and exhaust piping combined). Available in four models, the units have high-fire inputs of 50,000-120,000 Btuh. The boiler can be coupled with the SuperStor indirect water heater to provide domestic hot water.
Heat Transfer Products, P.O. Box 429, 120 Braley Rd., East Freetown, MA 02717; 508-763-8071 or 800-323-9651; 508-763-4909 (fax); www.htproducts.com