Hot Water Dispenser - Part 2 of 2

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On-demand hot water is not only a convenience, it can help to conserve both energy and water.

 

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Overview

It’s still easy to find a refrigerator without a cold water dispenser in its door, but you have to walk past a lot of product before you see one. This says something about people liking convenience. In many ways, a hot water dispenser is even more convenient than a cold water dispenser. There are boxes and boxes of beverages and food that need only a trickle of hot water to achieve their destiny: coffee, tea, hot chocolate, instant soup, hot cereals, and just plain old hot water and lemon to name a few. And there’s no faster way to get this hot water than with a hot water dispenser. These units are designed to fit in the spare hole on many kitchen sink decks. But, if you don’t have one, you can replace your spray hose with the dispenser. Or, if you want to keep the hose, just drill an extra hole in your sink or countertop to accommodate the dispenser faucet.
Note: Installing this appliance requires both plumbing and wiring work. If you are unsure of your skills in these areas, hire a professional. (Be sure to check your local codes before starting.)

What You'll Need

Tools:

Power drill with 3⁄4"-dia. bit
Utility knife
Wire stripper
Screwdrivers
Adjustable wrench
14/2 NM electrical cable
Flexible cable conduit
Duplex electrical box
Conduit box connector
Switched receptacle
Measuring tape
Wire connectors
Saddle valve
Brass plug to fill spray hose port on kitchen faucet
Teflon tape
Hot water dispenser kit
Cable connectors
15-amp circuit breaker (to match service panel breakers)
Tubing cutter

Materials:

Power drill with 3⁄4"-dia. bit
Utility knife
Wire stripper
Screwdrivers
Adjustable wrench
14/2 NM electrical cable
Flexible cable conduit
Duplex electrical box
Conduit box connector
Switched receptacle
Measuring tape
Wire connectors
Saddle valve
Brass plug to fill spray hose port on kitchen faucet
Teflon tape
Hot water dispenser kit
Cable connectors
15-amp circuit breaker (to match service panel breakers)
Tubing cutter

 

Step 1

How to Install a Hot Water Dispenser

Attach the two copper water tubes to the heater with compression fittings. Tighten them with a wrench. On the model seen here, the heater unit has three tubes. One supplies cold water to the heater, one supplies hot water to the faucet, and a third clear plastic hose acts as a vent and is attached to an expansion tank within the heater.


Step 2

How to Install a Hot Water Dispenser

Slide the end of the plastic vent tube onto the nipple on top of the tank and attach it according to the manufacturer’s instructions. On some models a spring clip is used for this job; other models require a hose clamp.


Step 3

How to Install a Hot Water Dispenser

Note: Hire an electrician if you are not experienced with wiring. Install the heater power supply cable in the service panel. Begin by turning off the main power breaker. Then, remove the outside door panel and remove one of the knockout plates from the top or side of the box. Install a cable clamp inside this hole, push the cable through the clamp, and tighten the clamp to secure the cable.


Step 4

How to Install a Hot Water Dispenser

Strip the sheathing from the cable inside the panel and remove the insulation from the ends on the black and white cable wires. Loosen a lug screw on the neutral bus bar and push the white wire under the lug. Attach the ground wire to the grounding bus bar. Tighten both these screws securely.


Step 5

How to Install a Hot Water Dispenser

Loosen the lug screw on a standard 15-amp breaker and put the end of the black (hot) cable wire under this lug. Tighten the lug with a screwdriver. Then install the breaker in the hot bus bar by pushing it into place.


Step 6

How to Install a Hot Water Dispenser

Once a new breaker is installed, the service panel cover has to be modified to fit over it. Break out the protective plate that covers the breaker position with pliers. Screw the cover to the panel, and turn on the main breaker. Turn on the water supply to the dispenser and plug it into the receptacle. Turn on the receptacle switch, wait fifteen minutes, and check that the system is working properly.


 
 

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