Zoneline Temperature Limit Switches

Temperature limit switches offered on the 2500, 4000, and 5000 series models are a feature to reduce energy costs by limiting the range of the room air thermostat. Each switch (heat and cool) has 4 settings:

SettingsCooling DegreesHeating Degrees
Normal57-9057-90
TL171-9057-77
TL277-9057-73
TL382-9057-68