PLUMBING

1.The cold water inlet is identified at the top of the heater (unless bottom entry). The hot water connection is also identified at the top of the heater. Install a shut-off valve in the cold line approximately 3’ from the inlet to the heater where it is in convenient reach. This valve is for emergency shut-off and MUST be kept open during the operation of the heater.

2.All nipples contain a plastic lining to minimize corrosion (cold inlet nipples have double sleeve, hot outlet nipples have a single sleeve). Do not apply heat to these nipples when making solder connections. Sweat a piece of tubing to adapter before fitting adapter to nipple.

3.A combination Temperature and Pressure relief valve MUST be installed. In some cases it is necessary that a Tee be fitted in the top of the heater which allows the temperature probe to reach into the top of the tank. See diagram on page 4. No shut-off valve of any kind is permitted between the tank and the relief valve. The outlet of the relief valve must be piped to a drain or fixture, and must terminate within 6” of the floor.

ELECTRICAL

1.Check to see that the element marking and nameplate data do correspond with the electric service available.

a)The junction box where electrical connections are made is located near the top of the heater, near the upper access door.

2.Install a circuit directly from the main fuse box. This circuit must be the right size for the length of run and the load (see chart below).

RECOMMENDED FOR AMPERAGE

MAX.

MAX. VOLTS

WATTS

120V

208V

240V

1500

20A

10A

10A

3000

35A

20A

20A

3500

40A

20A

20A

4500

 

30A

25A

5500

 

35A

35A

The heater must be well grounded.

3.A ground wire must run from the green ground screw provided at the electrical connection point in the heater junction box to the ground connection at the service panel.

4.Adequate fusing must be provided at the service entrance as required by local codes and/or electric utility having jurisdiction. This can be accomplished with either a circuit breaker or fuse block in the service panel or a separate disconnect switch, so that electric power can be shut off easily when working on the heater.

5.Final connections are made at the junction box in the heater. Access to the junction box is obtained by removing the cover near the knockouts.

6.The heater you have received is internally wired. A specific wiring diagram is located inside the upper door or for certain models on the rating plate. All wiring is color-coded and connections must be made as shown in the wiring diagram

MAKE SURE HEATER IS COMPLETELY FILLED WITH WATER BEFORE POWER IS TURNED ON. SEE ‘FILLING TANK’ SECTION.

WIRING

TWO WIRE CIRCUIT FOR NON-SIMULTANEOUS OPERATION. SINGLE HIGH LIMIT.

The basic operation of a two thermostat system (upper and lower) on a electric water heater of 240 volts is as follows:

Only one element will come on at any one time. This is known as a flip/flop system. On a 240-volt water heater, there will always be 120 volts to both elements. The thermostat will direct the second leg of the 120-volt to the element to complete the 240 volts required for energizing the element.

Initial Start Up: When the tank is full of cold water, the upper thermostat will take priority and the top portion of the water will heat up to the setting of the thermostat. Once that temperature has been reached, the thermostat will then flip down the 120 volts to the lower thermostat. The thermostat switch closes and the bottom portion of the tank heats up until the water reaches the setting on that thermostat. At this point the tank will be full of hot water.

Normal Operation: When hot water is being used, cold water enters the bottom of the heater (either bottom feed or by diptube), and the bottom element will begin to heat the cold water. If lots of hot water has been used, the upper thermostat will take priority and the top portion of the heater will be heated. Once heated, the thermostat will flip down to the lower thermostat to heat the lower portion.

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GSW Electric Water Heate Recommended for Amperage MAX MAX. Volts Watts, 120V 208V 240V, Heater must be well grounded
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Electric Water Heate specifications

The GSW Electric Water Heater is a product that epitomizes reliability and efficiency in water heating solutions. Trusted by homeowners and businesses alike, GSW is renowned for its dedication to quality, innovation, and user-friendly designs.

One of the primary features of the GSW Electric Water Heater is its impressive energy efficiency. Designed with advanced insulation materials, these heaters minimize heat loss, ensuring that the water remains hot for an extended period. This not only cuts down on energy costs but also provides a consistent supply of hot water when needed.

The unit is equipped with multiple heating elements that ensure rapid heating and recovery times. This is particularly beneficial for households with higher hot water demands, such as those with multiple bathrooms or high usage times. The elements are designed for long-lasting performance, reducing the frequency of maintenance and replacements.

GSW Electric Water Heaters also incorporate advanced temperature control systems. These systems allow users to set their desired water temperature accurately. Many models feature a digital display that provides real-time feedback on the water temperature, making it easier for users to monitor and adjust settings as necessary.

Durability is another key characteristic of GSW Electric Water Heaters. Constructed from high-quality, corrosion-resistant materials, these units are designed to withstand the test of time. Many models come equipped with a glass-lined tank, offering an extra layer of protection against rust and scale buildup. This not only extends the lifespan of the heater but also ensures that the water quality remains high.

Safety is a paramount concern, and GSW addresses this with features such as a high-temperature limit switch, which automatically shuts off the heating elements if they exceed safe operating temperatures. Additionally, some models include a pressure relief valve designed to prevent excessive pressure build-up, contributing to a safer operation.

Installation of the GSW Electric Water Heater is straightforward, allowing for quick setup in various locations within a home or commercial space. With versatile mounting options and compatibility with standard electrical systems, these heaters can easily fit into existing setups.

In conclusion, the GSW Electric Water Heater stands out for its energy efficiency, rapid heating capabilities, durability, and safety features. Ideal for those seeking a dependable source of hot water, it combines modern technology with practical design, making it a top choice for consumers looking to meet their hot water needs efficiently and safely.
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