Quick video about how to wire immersion heater in the uk.
Dual element immersion heater wiring diagram.
A wiring diagram is a simplified standard pictorial representation of an electrical circuit.
When viewed from the back the right hand 20 amp switch switches the mains supply on or off to both immersion heaters.
Immersion heaters are usually rated at 3kw which under normal circumstances would qualify them for being wired into a ring main however because immersion heaters can be left on indefinitely taking 3kw from a ring circuit would reduce the circuits capacity immensely so immersion heaters are placed on their own radial circuit.
Collection of wiring diagram for hot water heater thermostat.
Dual element immersion heaters are exclusively used in vertical orientation domestic water cylinders.
Heaters are pre wired and have either a 1m or 2m four core high.
Dual heaters work in conjunction with a sink bath switch with a short element used to heat smaller quantities of water and the longer one to heat the cylinder to the length of the element i e.
Ensure each wire is connected to the appropriate terminal as shown in the typical diagram figure 1 and described below.
1 2 the thermostat or cutout if fitted and offset in the heater should be at the top side of the element bundle.
The switch on the left is a two way switch that switches between the two heaters.
Manufacturers make electric heaters with either one or two elements.
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It shows the elements of the circuit as simplified forms and also the power as well as signal connections between the tools.
1 3 ensure that the gasket makes a drip proof seal between the heater and the tank and that there is sufficient room to withdraw the heater.
Whereas gas heaters heat water with a burner that produces a flame electric heaters instead use electricity to heat an element.
Diagram of immersion heater wiring.