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Posted by jrstech on September 29, 2007, 10:29 pm
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> > wrote:
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> > > > We recently remodeled a bathroom with new shower plumbing with a Grohe
> > > > thermostatic valve and body sprays. Additionally we replaced the tub
> > > > rough and trim. The problem is that the pressure on the hot water side
> > > > drops significantly after about 5 seconds when running either the tub
> > > > or shower in hot only. When switching on the cold only the pressure is
> > > > great. If the tub or shower is running hot only and we turn on the lav
> > > > faucet the hot water only trickles out. This bathroom has a dedicated
> > > > 40 gal electric water heater located in a closet 10 feet away. One
> > > > thing we noticed is that the supply line going into the heater heats
> > > > up as hot as the hot water pipe within 10 to 15 seconds. Not sure if
> > > > this is part of the pressure problem, but I would think that the
> > > > supply line to the heater would only get colder as water flows into
> > > > it. You advice is greatly appreciated.
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> > > Is the dedicated water heater new or was it there before.
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> > > Other than that, I suspect the that it is the thermostatic valve that
> > > protects you from being scalded. It may have been defective. Check with
> > > whoever did the work . I believe Grohe is good stuff.
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> > > --
> > > Joseph Meehan
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> > > Dia 's Muire duit
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> > The water heater was there before. It is the cold water supply to the
> > heater getting so hot that has me concerned now. It seems that there
> > is some kind of loop feeding hot water back to the heater after the
> > hot water runs for 10 to 15 seconds. The cold water supply pipe gets
> > as hot as the hot water pipe exiting the heater.- Hide quoted text -
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> > - Show quoted text -
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> Where do you take the cold off for the tank and the tap if at the end
> of a line and tee'd you are sucking it outwhen you have the tap turned
> on. Or you have your connections crossed not the first to do that.
> send picture of set up- Hide quoted text -
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> - Show quoted text -
Don't have pictures of the rough work but it does sound like some
connections are messed up at a tee or valve and the hot water is
getting back into the heater after a few seconds. Is that correct?
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