Why is my water not cold - Ragalta Countertop Hot / Cold Water Dispenser Color: White"

Did you put hot to hot side? And cold to cold side?
Cold water pipe usually has shut-off valve.
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#new

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Cold inlet and hot outlet are marked on top of water heater.
Usually there is a letter or word embossed into the metal top.

If tank is connected, then turn on hot water tap for a few moment and feel which pipe is hot.

Cold water enters bottom of tank through dip tube located on cold side. If hot and cold are reversed, the water heater will not perform as expected.
http://waterheatertimer.org/Water-heater-dip-tube.html

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Hi,
The dip tube on the cold water side either is not there or it is broken off then the cold water stays on the top and gives cold water quickly...

If this is a new installation then check that the piping is correct and that the cold and hot pipes are not switched...

heatman101

Tanks are marked with Hot and Cold.
1) If water connections are on top of tank, look for red marking or word HOT that shows where hot water pipe connects. Look for blue marking or word COLD that shows cold water connection.
2) If water connections are on side of tank, cold water connects to bottom one, and hot connects to top.

3) If hot and cold are reversed, the tank will not work.
Pipes on top of tank: cold water enters tank and is sent to bottom of tank in a long tube called the dip tube. This means the cold is on the bottom since hot water rises to the top. The hot water exits top of tank.
Pipes on side of tank: You want cold water to enter bottom, so hot water naturally rises to the top outlet.

3 minutes?? does the water run cold then? or just warm?
Is this what the tank you replaced was doing? If so, then you may have: 1 a recirculating pump instant hot water system thats faulty and allowing cold water backflow into hot water piping. 2 A tempering valve that has stuck, allowing cold water into your hot water system.
Or maybe a broken or missing dip tube in your new heater.
If after 3 minutes the water is coming cold out leave that faucet running and go to heater and feel the hot water outlet pipe from the heater. if that pipe is hot then the heater is not the problem. If the hot pipe from the heater is cold the heater is the problem. (Make sure the cold pipe coming into the heater is connected to the Right side marked "cold" !) If there is a tempering valve by the heater: feel the output from the tempering valve, if it is cold and the pipe from the heater to the tempering valve is hot, then the tempering valve is the problem. If all these are OK somewhere in your plumbing system hot and cold may be connected possibly a faucet or showerhead that is shut off at the spout/head, but hot/cold handles are left turned on then cold water can backflow thru hot pipe.

Make sure that the water pipes for the cold water coming in and the hot water going out are connected to the correct positions on the water heater. If the connections get reversed, the water that is supposed to be hot will be drawn from the bottom of the tank and will not be as hot as it should be. The cold water input goes to the bottom of the tank. The hot water out comes from the top of the tank.

sounds like you have a hot water leak un der your foundation.

The hot and cold pipes run in the wall next to one another. So the water turns cold again as soon as the water starts flowing