F - Mech Eng,Light,Heat,Weapons – 24 – H
Patent
F - Mech Eng,Light,Heat,Weapons
24
H
F24H 1/18 (2006.01) F24D 19/10 (2006.01) F24H 9/20 (2006.01) G05D 23/275 (2006.01)
Patent
CA 2080946
A hot water system for connection to a water supply and a local hot water usage system, comprising a plurality of series-connected reserve tanks and demand tanks for receiving water from the water supply, heating the received water to a desired temperature within the reserve and demand tanks, and supplying the heated water to the local hot water usage system as it is demanded. A controlling device is provided for sequencing the operation of the reserve and demand tanks relative to peak power consumption hours and off-peak hours. Specifically, each of the tanks is provided with one or more thermostats which are selectively enabled or disabled by the controlling device at predetermined times. The one or more thermostats are, in turn, connected to one or more heating coils or maintenance coils. The reserve tanks and demand tanks may be operated under control of the controlling device in any of three modes, as follows: maintenance mode, enable mode, and disable mode. In maintenance mode, the water is maintained at a desired temperature either via enabling a thermostat which is connected to a low-power maintenance coil and disabling the heating coil thermostats, or via cycling power through the heating coil thermostats if no maintenance coil is provided. In enable mode, the heating coil thermostats are enabled so that the water temperature may be increased in a tank via activation of the heating coils under thermostat control, and if a maintenance coil is provided then the maintenance coil thermostat is disabled. In disable mode, the heating coil thermostats, and associated heating coils, are disabled to minimize power consumption. If the tank is provided with a maintenance coil, then the maintenance coil thermostat and associated maintenance coil are also disabled when the tank is operating in disable mode.
621542 Ontario Limited
Elia Paul
Sim & Mcburney
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