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Replacement intervals depend on ambient air quality
it ensures the correct flame pattern and bridge-over for the main burner
and 6007 models
Key Benefits Universal Compatibility: Serves as the official direct replacement for CTR1138
Source 1 S1-THEC11NS Thermostat Replacement intervals depend on ambientThe York S1 THEC11NS is a commercial grade, non programmable digital thermostat designed for 1 heat 1 cool configurations in residential and light commercial applications. This low voltage control is engineered for compatibility with conventional single stage gas or electric furnaces, air conditioners, and millivolt heating systems. As a veteran preferred HVAC replacement part, it offers a reliable digital upgrade for older mechanical mercury bulb
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