I want help to create a circuit that allows the heater element of my office water heater to run for a single heating cycle only rather than continously repeated reheating cycles.
In more detail this means that I want the heating element to be switched on, say by a mains timer switch, heat the water tank until the thermostat switches the heater element off and then for the mains power supply to be automatically disconnected so that when the water temperature falls and the thermostat reconnects, the power supply will then no longer be available to reheat the water; at least until the mains timer switch turns it on again.
My intention is to help reduce energy consumption at my office where one tank-full of hot water is sufficient for a day, it doesn’t need reheating. Having said that, a manual over-ride would be a useful addition.
I have drawn up a circuit and constructed a low voltage prototype of the device but, whilst it looks okay on paper (to my novice-level eyes), it doesn’t work and I want to find out why.
I’ve attached the circuit diagram (eeeeek!) and hope you will help.
Cheers, Tim
In more detail this means that I want the heating element to be switched on, say by a mains timer switch, heat the water tank until the thermostat switches the heater element off and then for the mains power supply to be automatically disconnected so that when the water temperature falls and the thermostat reconnects, the power supply will then no longer be available to reheat the water; at least until the mains timer switch turns it on again.
My intention is to help reduce energy consumption at my office where one tank-full of hot water is sufficient for a day, it doesn’t need reheating. Having said that, a manual over-ride would be a useful addition.
I have drawn up a circuit and constructed a low voltage prototype of the device but, whilst it looks okay on paper (to my novice-level eyes), it doesn’t work and I want to find out why.
I’ve attached the circuit diagram (eeeeek!) and hope you will help.
Cheers, Tim
Attachments
Last edited: