York S1 THEH21NS Thermostat R 407C providing updated lead free compliance without providing updated lead free compliance without compromising flow performance Dual Primary Flexibility: Supports both 208V and 240V primary taps to match specific site electrical requirements This specific model supports 2 stages of heat (typically compressor plus auxiliary heat) but only 1 stage of cooling Designed to meet strict original equipment specifications
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York S1-THEH21NS Thermostat R-407C providing updated lead-free compliance without