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The integrated internal relief valve (IRV) is standard
This is an SPDT (Single Pole Double Throw) control
skin oils can lead to hotspots and premature failure of the element
it is built to resist shock and vibration
White-Rodgers 1F85U-42PR Thermostat 30067439-890 The integrated internal relief valveThe White Rodgers 1F85U 42PR is a versatile 80 Series universal programmable thermostat engineered for high performance control across a wide range of HVAC configurations. Supporting up to 4 Heat 2 Cool heat pump stages or 2 Heat 2 Cool conventional systems, this unit provides the flexibility professional contractors require for diverse residential and light commercial job sites. It features a high contrast 5 inch backlit display for superior