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2. Honeywell T87 - Wikipedia

   en.wikipedia.org/wiki/Honeywell_T87

   The Honeywell T87 Round Thermostat is a thermostat that Honeywell International, Inc. first manufactured in 1953. [1] Henry Dreyfuss designed the thermostat based on a concept by Honeywell engineer Carl Kronmiller .

3. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...

4. List of Honeywell products and services - Wikipedia

   en.wikipedia.org/wiki/List_of_Honeywell_products...

   Pneumatic Control Valve [67] Pro-Watch Security Management System [68] Sensors (Temperature, Humidity, T/H, CO, CO 2, DPS, Flow) [69] Smoke detectors [70] Specialty Detection – Flame, Beam, CO, Thermal Sensing Cable [71] Standalone Fire Alarm [72] Thermostats [73] Honeywell T87, its classic "Round" thermostat; Variable Air Volume (VAV ...

5. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.

6. Thermostat - Wikipedia

   en.wikipedia.org/wiki/Thermostat

   Four wires come to the centrally-located thermostat from the main heating/cooling unit (usually located in a closet, basement, or occasionally in the attic): One wire, usually red, supplies 24 volts AC power to the thermostat, while the other three supply control signals from the thermostat, usually white for heat, yellow for cooling, and green ...

7. Programmable thermostat - Wikipedia

   en.wikipedia.org/wiki/Programmable_thermostat

   Lux Products' Model TX9000TS Touch Screen Thermostat [1]. Vaillant digital room thermostat. A programmable thermostat is a thermostat which is designed to adjust the temperature according to a series of programmed settings that take effect at different times of the day. Programmable thermostats are also known as setback thermostats or clock ...