A.o. Smith Electric Water Heater Wiring Diagram – In the electric heater and thermostat wiring system, we will run two electric heaters (9000 W (4500 W each)) and thermostats for the electricity 240 V and 230 V continuous, that is at one time. You can see the 240 V rating in the future. the installation of hot water wiring is not at the same time.

As we discussed earlier about simultaneous (continuous) and non-simultaneous (continuous). In short, in friction or at the same time of operation, the heat and the heating elements themselves are supplied at the same time, while continuous ( (non-periodic) mode, the high temperature heater is turned off after it is done and the low temperature is turned on. and the heater automatically depends on the wiring configuration.

A.o. Smith Electric Water Heater Wiring Diagram

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In this post, we will show a 9kV dual element (4.5kW heating element each) with 240V and 230V AC supply, thermostat and heating element are wired for continuous operation, that is , the thermostat and heating element work at the same time when separately approved. supply from the main distribution plant.

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For the wiring of the 9000 watt heater at the same time, we use the red and black wires as line 1 and line 2 for 240V AC and the line and neutral wire for 230V AC.

Both lines come from the main 120V/240V panel as the power source connected to the thermostats and heating elements. L1 is connected to the left side of both the upper thermostat and L3 lower thermostat through the 50 amp circuit breaker and 45 amp fuse switches. The same electricity is connected to a small thermostat and light bulb, and goes to the same switch and switch. Instead of one 50 amp breaker, two 30 amp breakers can be used for the two lights and heaters.

Terminals L4 and T2 of the two thermostats are connected to the heating elements at the top and bottom. In the case of one circuit breaker (50A) 6 gauge wires can be used, while 10 gauges are good if there are two different circuits of 30A each.

The wiring diagram below shows a 9,000 watt water heater for simultaneous operation with a light source and connected to two pole breakers rated at 30 amps each.

How To Wire 240v

The continuous heating of 230 V single heater is the same as above for 240 V, the only difference is that L1 and L2 appear as lines neutral wires.

In other words, a 50A breaker at 240V can safely handle 9000 watts. If we get an 80% rating for smooth operation and future load, then:

This means that the system can handle a load of up to 9.6 kW without any heating at 9 kW.

Note: The red color indicates the timing line or wire in the picture above. You can follow local wire color codes such as IEC or NEC.

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120V AC 230V AC 240V AC Continuous Water Heater Dual Element Water Heater Electric Water Heater Wiring Electric Wiring Non Contact Water Heater

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As we discussed earlier about continuous (concurrent) and continuous (non-concurrent). By wiring at the same time, two water heaters work at the same time, since the wiring is not at the same time, only one heater works at the same time. ‘one time, the other is in the “ON” state while the other stops heating and is removed. power supply. automatic feeding by thermostat wiring arrangement.

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In this post, we will show you how to install two 10kW dual elements (5kW heating element each) with 240V AC power from the main panel 120/240V and 7kW dual element (3.5K heating element each) for 230V AC and 240V AC. thermostat wiring. ) we will show. continuous operation, that is, only one burner works at a time.

As in the previous wiring diagram, the high temperature thermostat is connected to a single 240 VAC unit supplied by a 30 amp breaker. Lines (L1) and L3 are connected to the right side of the thermostat as the hot wire. Two wires (blue and red) lead from terminal L4 of the thermostat to the first terminal of the heating elements on the top and bottom, and the terminal T4 of the upper thermostat is connected to the terminal 1 of the lower thermostat and the terminal T2 temperature. The upper thermostat is connected to the second end of the heater. . Finally, the terminal “2” of the bottom of the thermostat is connected to the second end of the lower temperature.

Asynchronous operation of the thermostat automatically turns off the upper light and turns on the lower one after proper operation. The following diagram shows it well.

Since there are two heaters that can be about 5000 watts each, the total power of this heater is 10000 watts. We use a breaker and change the size for half the total power, that is 10 kW, since only one element works at a time.

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Now in the case of 240V AC, the 30A breaker fits and 10 gauge wires, then the following calculations are made.

In other words, the safety limit of the circuit is 80% (0.8), so 30A x 0.8 = 24 Amps, which is good for the current load.

Therefore, the 30A circuit breaker is suitable for overload protection in the case of 5 kW double continuous water heater for 240 V AC.

The following 7kW (each heater 3.5kW) has the same wiring above for the 5kW thermostat wiring, although 20A single end and 230V AC are used for ON / OFF operation. Note that these connections are not suitable for two 240 V power supplies.

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In the 3500W continuous water heater wiring diagram, the two wires from the main distribution board are shown as “L” and “N” for the AC 230V source and L1 and L2 for the two AC sources of 240V.

NOTE: The red from the line or series of wires shown in black in the picture, while the black is the neutral wire in the picture above. You can follow local wire color codes such as IEC or NEC.

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