Description
The Schneider Electric (Barber Colman) TC-187 is a fan coil thermostat designed to control the temperature in heating, ventilation, and air conditioning (HVAC) systems. It has three operating modes: high (Hi), low (Lo), and medium (M), in addition to an off (Off) position, and it runs on a 120-volt power supply.The TC-187 is commonly used in fan coil units (FCUs), a class of HVAC equipment that employs a coil and a fan to deliver hot or cold air throughout a building. By measuring the ambient temperature, the thermostat compares it to a point that the user has set. It finally sends signals to the FCU to modify the fan speed and the hot/cold water flow via the coil based on the differential.
