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re: radiant floor heat water heater ?
7 dec 2003
news  wrote:

>> >> >> > running potable water through underfloor heating pipes
>> >> >> > is not advisable at all.
>> >> >>
>> >> >> why not?
>> >> >
>> >> > if you did that in the uk you may find the water
>> >> > company cutting off your supply.
>> >>
>> >> why?
>>
>> why?

why?

>> >> > in the far reaches of the system sludge
>> >> > and sediment can build up.
>> >> > during summer the water sits there
>> >> > uncirculated being contaminated.
>> >>
>> >> why would the water be "contaminated"?
>>
>> maybe it's the "far reaches" part. how far is a "far reach"?
>
>the parts that stays stagnant in summer.

is 20.3 feet a "far reach"? :-)

>> > nick, please?  water can be contaminated
>> > for various reasons and water
>> > laying there for half a years tend to be prime
>> > for contamination.
>>
>> so... we seal some pure water up in a jar
>
>no we don't seal up water in a jar.  we look at why the regulations are so
>strict. they are strict because contamination in the past tightened the
>regulations up as time progressed.  all for a reason.

plumber's union? :-)

>> but suppose the floor has some
>> fresh water flowing through it all year,
>> some fraction of the potable water
>> consumed in the house...
>
>if the heating system is off all summer no flow will be through the heating
>pipes.  what are going to do?  have a pump working 24-7 to keep the flow?

keep thinking...

>> >> > when the heating is switched on, this
>> >> > contaminated water then mixes with water
>> >> > people come in contact with.
>> >>
>> >> one might flush the tubing every fall...
>> >
>> > nick, please?  no one wants to flush a system
>> > every year.  the average old person in a house
>> > is going to do that?  or they incur charges to get a
>> > plumber to flush it.  totally unnecessary if installed correctly.
>>
>> you mean "if needlessly overcomplicated with a heat exchanger"? :-)
>
>no!  installed correctly to prevent water contamination.  coiled heat
>exchangers in cylinders are not expensive or complicated at all...

would a few more !!!'s make you more believable?

>> >> > in the uk, water used for heating
>> >> > (primary water) is never mixed with
>> >> > water people come in contact with
>> >> > (secondary water).
>> >>
>> >> ah yes. tradition :-)
>> >
>> > tradition of having the probably the best
>> > quality water in the world...
>>
>> long may you wave.
>
>and that we agree on.

they'll always be an england.

>> >> > also fresh water in a heating system
>> >> > is foolish as scale can build up within.
>> >>
>> >> the floor is fairly low temp, and
>> >> no heating occurs there...
>> >
>> >it can still build up.
>>
>> would you have any evidence for this article of faith?
>
>yes.  being experienced in the game.

would you clarify that in excruciating detail?

>> anyone you know need to descale hot water pipes often?
>
>over here?  no.  as we have tighter regulations than elsewhere.

and the water reads regulations? if hot water pipes in a house
don't need descaling, why should hot water pipes in a floor?
 
>> as i recall, europeans perfected condensing gas boilers 35 years ago...
>
>the dutch did research on condensing boilers in the 1950s.  they never
>really took off until 15-20 years ago. in holland 95% plus of all boilers
>are condensing boilers. the uk is slow to take them up as they are slightly
>more expensive and produce an exhaust plume.

tradition? :-) i saw condensing boilers on paris billboards in 1971. 

nick




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