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Can i connect a dishwasher to the hot water pipe??

When i took the old dishwasher out, i found that it had been connected to the hot water supply to the kitchen tap. can i connect the new one to this existing connector. it would be alot easier to do this, rather than have to break into the cold supply. thanks

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In my opinion you always connect to the hot water unless there's some compelling reason not to like your dishwasher's manual says to connect to cold. Your dishwasher will heat up whatever water you have connected it to, but since you have a tank of preheated water already sitting in your water heater you should use that.

The "resin in the water softener" example, I think, makes no sense since your dishwasher will heat up the water to something like 160 degrees Fahrenheit no matter if the input is cold or hot...

Posted on May 03, 2009

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I have a solar hot water system so it makes economic and practical sense to have the sun heat the water first instead of using fossil fuels.....(ie coal powered electric) I don't care if the cold rinse is done in hot water cause it doesn't cost me or the planet anything to heat. Only problem, will it wreck my machine?

Posted on Apr 30, 2010

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You can connect to the hot supply but it is better to connect to cold. the reasons are:
if water is too hot it can destroy the resin in the water softener
uses too much hot water and hence uneconomic

Posted on Jul 15, 2008

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Yeah I agree. Connect it to the hot...Even plastic supply lines are rated 90'c at 1 Mpa. A pressure relief valve should be fitted regardless hot or cold. Something like a limit of 700Kpa

Posted on Feb 25, 2010

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Posted on Jan 02, 2017

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Don't understand the incomprehensible door and general installation instructions for the aqua star. Just uses pictures, anywhere available that uses WORDS?


Hello,
  • 1 what you'll need
    Electric drill and hole cutting bit
    Screwdrivers
    Pliers
    Adjustable wrench
    Level
    Teflon pipe tape
    Drain pipe for dishwasher
    Dishwasher connection kit - available at your home store (should contain water supply line for dishwasher as well as necessary connectors and compression couplers).
    New dishwasher

  • 2Determine that you have access to the hot water supply line, the drainpipe and an electrical connection under the sink. Installing the dishwasher will require extending the hot water supply line to the dishwasher, connecting the dishwasher drain to the drainpipe under the sink, and plugging the dishwasher in. If your home was not plumbed in anticipation of a dishwasher, you will need to change some fittings under the sink to make these connections possible. (See below)
  • 3Read the instruction manual that comes with your new dishwasher. Installing a dishwasher is straightforward but you want to be sure you understand and are comfortable with the necessary steps.
  • 4
  • Thanks for using fixya.
  • Jul 19, 2011 | Bosch Dishwashers

    1 Answer

    Is it a cold water or hot water fill


    It's your choice.There's only a single supply hose and with most dishwashers that means cold fill only, but as this is a compact basic worktop model the manual supplied suggests that users connect to a hot water supply.

    In real-life situations though, the water drawn from the hot supply often isn't instantly hot so all you do is drain cold or tepid water from the supply pipe and let it get replaced with wasted hot water which then cools in the pipe! If the machine features condenser drying like many dishwashers, then cold water is essential for it to work. A final consideration is that unless your hot water is supplied at mains pressure (such as in a combi-boiler or megaflo system) then the water pressure from a hot water storage tank will not often be high enough and you'll have to use the cold supply.

    Jul 13, 2011 | Bush DW5F 22 in. Dishwasher

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    Whirlpool dishwasher Leaking water


    Hello there:
    Troubleshooting Leaks
    If the dishwasher leaks, and you know the problem is not related to tub overfilling, the pump, or inlet valve problems, the plumbing connections may be faulty. Most dishwashers are connected to the water supply with metal pipe fittings, and the leak could be at these fittings. If the fittings are threaded, tighten them with an adjustable wrench. If this doesn't work, chances are the threads are stripped or the fitting is cracked or otherwise damaged. In this case, replace the fitting.
    Most dishwashers discharge used water through a pipe or a hose connected to the drain or garbage disposer under the kitchen sink. If the drain line is made of flexible hosing, it may have cracked from prolonged exposure to hot water. Examine the hose; if it's damaged, replace it. If the hose is leaking at its connections with the disposer or dishwasher, tighten the fittings or clamps at the connections, or replace the clamps. Also check for water leaks around inlet valves, drain valves, and anywhere you see flexible hoses and hose connections. Leaks at clamps can be stopped by tightening or replacing the clamps. Leaks in hoses can be eliminated by replacing the hoses.
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    Nov 13, 2009 | Dishwashers

    1 Answer

    Water Connections


    In the US dishwashers are usually connected to the hot water supply. Although the ASKO 1850 I believe has an in line heater. Using hot water supply will reduce electrical useage.

    Interestingly we use to have ASKO washer and it suggested only using cold water hook up as it heated its own water. I guess this was a feature if one's laundry area does not have hot supply, but it made no sense in CA to heat water with electricity.

    Nov 11, 2009 | Asko 24 in. 1805 Built-in Dishwasher

    1 Answer

    It is an older dishwasher that works great, but it suddenly stopped putting out water. The element inside heats up and timer works. It is an Inglis Scour Master tall tub,


    Check two things:
    -Follow the hot water pipe from the dishwasher back to the place it connects to the wall. There should be a valve there. Make sure that it remains open. (very common for it to get closed but not noticed.)

    -If the hot water supply valve is good/open, you should next consider the solenoid valve that controls when the water enters the dishwasher. It is located just past where the fill pipe connects to the dishwasher.

    Please report back what you find of if you have further questions. OK?

    Aug 11, 2009 | Dishwashers

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    Water coming into dishwasher when not running


    Removed intake water valve assembly and found a piece of plastic wedged in intake port preventing valve from closing. Piece of plastic was old filler tube from old hot water tank which disintegrated and got into hot water pipes in home. Similar pieces of plastic have affected water mixer valves at various sinks in home and have also plugged aeration screens.

    Jan 13, 2009 | Dishwashers

    1 Answer

    Re dishwasher unit / sgs46m78au. water pipe/hose/ connections


    The water connection is the smaller of the two and generally near the front of the machine, usually a threaded fitting on a electric solenoid will need a pipe to compression 90 fitting if its not already installed, it needs to be hooked to the hot water and that can be found on the left side going up to the sink faucet to be sure run some hot water and the side that gets warm is the correct one, you will need to turn off the water and install a T to connect the dishwasher if an unused shut off is not already there for the dishwasher. The drain line takes a hose and clamp and will hook into your drain iether through a dishwaser t or the disposal if you have one has a connection for it.

    Dec 17, 2008 | Bosch SHU3305 Dishwasher

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    Washing maching won't rinse in cold water


    hi is this hot and cold water piped machine? ie two connections on rear of machine for hot and cold pipes ? if so are your pipes connected properly on machine and the water supplies? if cold supply is connected to hot supply then wash inlet allows water in washer then washes in cold? but when rinse is due? the elec valve that has hot water pipe connected?? is failing to open allowing water flow of hot on rinse so advise recheck pipes for flow of water from both? when disconnected from machine if flow ok then possible valve blocked/faulty hope you can understand above? if you can give more info on your machine it would help to offer a remedy?

    Nov 01, 2008 | Hotpoint Washing Machines

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