I’m considering hooking the dishwasher to the cold water supply.
It has an automatic heating element to bring the temp to 120. If the timer is set to run overnight, the hot supply will be cold and the element will need to operate.
It seems silly to fill the lines with hot water, very little of which ends up in the dw, only to have them radiate the heat away before the next cycle.
Anyone done this without trouble?
Troy Sprout
Socialism in general has a record of failure so blatant that only an intellectual could ignore or evade it.”
— Thomas Sowell
Replies
The 120 rating I'm thinking assumes not starting with cold water. And if your DW is located next to the sink, you're only talking a glass of water (?) sitting idle in the line.
A great place for Information, Comraderie, and a sucker punch.
Remodeling Contractor just outside the Glass City.
http://www.quittintime.com/
40' of 1/2" copper (my dw distance from water heater) =
((.25*.25)*3.14)(12*40')) = 94.2 cubic feet/231 cubic feet per gallon = .41 gallons
So, I'm dumping .41 gallons of cold water into the machine at the start of the cycle and leaving the same volume of hot water in the lines. If the washer uses 1 gallon per cycle and runs 3 cycles per load... that's
3*.41= 1.23 gallons of water * 25 loads per month = 30.75 gallons * 12 mos per year = 369 gal of water, most of which gets heated twice.
Gotta be better to have the point of use element (in the dw) do the heating of cold supply.
Anyone done it? Any Problems?
Thanks
Troy Sprout
Socialism in general has a record of failure so blatant that only an intellectual could ignore or evade it."-- Thomas Sowell
Thanks for the rest of the information.
If the dw can heat it to the proper operating temperature, then why not.
If not, and the dishes need the dry cycle to complete the process then I guess you need to figure in the necessary electric. Easy swap to hot if it doesn't work well for you.A great place for Information, Comraderie, and a sucker punch.
Remodeling Contractor just outside the Glass City.
http://www.quittintime.com/
If you do this you should buy a DW with a high-energy 240V heating element and a thermostat that detects when the water is up to temp. Standard units will not pause to heat the water.
Temp sensor built in.
Kitchenaid S Series user manual states:
"This dishwasher is equipped with an optical sensor wash that detects water temperature, soil and detergent amount. Wash cycles are adjusted based on what is sensed. The dishwasher “senses” wash water quality during a series of pauses in the wash cycle. The sensor monitors water temperature and the amount of soil and detergent appearing in the wash water. It automatically adjusts the wash cycle for the best wash. Lightly soiled dishes will use less water and energy. Heavily soiled dishes will get more water, increased temperature and wash time. This dishwasher will automatically adjust the sensor approximately once a year to your water quality."
So, anyone else attempt this?Troy Sprout
Socialism in general has a record of failure so blatant that only an intellectual could ignore or evade it."-- Thomas Sowell
But does the DW fill the sump and heat the water to temp before starting the wash? How many watts is the heating element? A standard element is just capable of keeping hot water hot, not heating cold water to temp.
So convenient a thing it is to be a reasonable Creature, since it enables one to find or make a Reason for everything one has a mind to do. --Benjamin Franklin
But Calvin makes a point: It's easy enough to plumb to both, with shutoff valves between, and revert to hot water if the cold scheme fails.
So convenient a thing it is to be a reasonable Creature, since it enables one to find or make a Reason for everything one has a mind to do. --Benjamin Franklin
I have never hooked up a domestic dishwasher to the cold line. Most have whats called a booster heater to bring the temp. above the 120deg. that enters. If the manufactors says that you can do this, go for it; if not I would go with one of the other posts that said to hook it up to both sides and if it dosen't work, shut the cold off and turn on the hot, luck.
"If all else fails, read the directions"