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this unit is engineered to convert a proportional 0
Set it to 'O' for the majority of heat pumps (energized in cooling) or to 'B' for specific brands like Rheem or Ruud that require the changeover relay to be energized in heating
the HC21ZS122 is a shaded-pole or permanent split capacitor design (depending on the specific production run) that typically does not require an external capacitor
the 0794062 is strictly a relief valve rubber parts kit
Its standard mounting configuration and durable electrode tip withstand high-temperature combustion environments
Lennox 13H13 Thermostat Freon this unit is engineered to7D 1H 1C Conv HtPmp Thermostat 13H13 is the direct replacement for X4146
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