Endura™ EDR-1500 and EDR-2000 are, respectively, 1,500,000 and 2,000,000 Btu/hr vertical firetube-design boilers featuring duplex stainless steel 3-pass heat exchanger with enhanced fireside surfaces. Boilers offer <20 ppm NOx emissions, full input with 4 in. wc incoming natural gas pressure, 120 V single-phase power supply, and up to 8:1 turndown. Other features include AHRI-certification at 93.5% efficiency (EDR-1500) and 93.7% (EDR-2000) and color touchscreen display.
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