Patent ID: 7131490
Filing Date: 2006-11-07
Classification: F24F

Abstract:
1. A fan coil controller for a hot and cold water system of a building, the fan coil controller comprising: a hot water flow control circuit; a cold water flow control circuit; a thermostat, the thermostat being connected to a power supply; a fan coil control circuit incorporating a timer, a first relay on the hot water flow control circuit and a second relay on the cold water flow control circuit; the first relay being controlled by the timer to control electrical power supplied to the hot water flow control circuit and to control a connection between the hot water control circuit and the thermostat; the second relay being controlled by the timer to control electrical power supplied to the cold water flow control circuit and to control a connection between the cold water control circuit and the thermostat; and the fan coil control circuit being configured to periodically and temporarily operate the hot water flow control circuit and the cold water flow control circuit to cause a flushing of the hot and cold water system while simultaneously disconnecting the hot water control circuit and the cold water control circuit from the thermostat during flushing.