Ultrastat thermostat

The TB provides temperature control for gas, ultrastat thermostat, electric, and heat pumps for up to 2 heat, and 2 cool systems.

Share your interactive ePaper on all platforms and on your website with our embed function. Electrical Ratings: See Table 2. Default Settings: See Table 3. Cooling: Selectable 1 - 6 cycles per hour. Interstage Differential:Droopless control. Non-replaceable lithium battery with ten-year life: Under normalconditions holds calendar and time settings. NOTE:Alkaline batteries keep calendar and time if lithiumbattery is no longer functional.

Ultrastat thermostat

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Main screen selections.

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Ultrastat thermostat

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When the thermostat is running the fan, the fan blade symbolappears next to FAN to indicate the thermostat has the fanon. Only shown for heat pump systems with more heat stagesthan cool selected and remote sensor selection is outdoorfor control. Interstage Differential Droopless control. International Sales and Service Offices in all principal cities of the world. See www. If voltage is not present, check thecooling equipment to find the cause of theproblem. Thermostat Description: See Table 1. Compressor output. Heat relay. Remove the metal jumper wirebetween Rc and R. Press the Up or Down arrow next to the temperature toadjust.

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Keep wiring at least one foot away from large inductive loads such as motors, line starters, lighting ballasts and large power distribution panels. Compressor output. This will ensure high visibility and many readers! Only shown if system has cool stages. Be sure wire distance between sensor and thermostat isless than feet. Press MORE2. Extended embed settings. International Sales and Service Offices in all principal cities of the world. Consider the following as well:. Press DONE. TAGS thermostat sensor indoor outdoor installer cooling heating programmable ultrastat batteries www. Check for 24 Vac between the heat terminal W and transformer common. NOTE: The setpoint changes gradually to use economical stages and avoid overshooting. Heat Pump Temperature Lockouts Dual Fuel Heat Pump and Outdoor Temperature Sensor In this operation, there is no external fossil fuel kit dual fuel kit installed; the thermostat controls this function:. If not, see the Advanced Settings section toset the day.