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Home > Archive > Building and Construction > February 2006 > Water flow dynamics....
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Water flow dynamics....
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| SWMBO and I will be starting a new house build in the next couple of
months, and we will be doing most of the work together.
The Master bedroom suite bath is about 75' from the utility room in the
basement, and we're considering installing a tankless water heater in
the basement near the MB.
We want to minimize pressure drop, what woud be the best way to supply
the MB bath?
TIA for any guidance/experinces you can provide.
Darwin
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| RicodJour 2006-02-23, 1:21 pm |
| DAC wrote:
> SWMBO and I will be starting a new house build in the next couple of
> months, and we will be doing most of the work together.
>
> The Master bedroom suite bath is about 75' from the utility room in the
> basement, and we're considering installing a tankless water heater in
> the basement near the MB.
>
> We want to minimize pressure drop, what woud be the best way to supply
> the MB bath?
>
> TIA for any guidance/experinces you can provide.
With a run that long a tankless is a good choice. Go with 3/4" risers.
R
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| Phil Scott 2006-02-23, 3:21 pm |
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"DAC" <darwincam@gmail.com> wrote in message
news:1140704798.008484.225470@p10g2000cwp.googlegroups.com...
> SWMBO and I will be starting a new house build in the next
> couple of
> months, and we will be doing most of the work together.
>
> The Master bedroom suite bath is about 75' from the utility
> room in the
> basement, and we're considering installing a tankless water
> heater in
> the basement near the MB.
>
> We want to minimize pressure drop, what woud be the best way
> to supply
> the MB bath?
>
> TIA for any guidance/experinces you can provide.
>
> Darwin
with pressure drop you are addressing an insignificant issue
for the most part unless you have some kind of 15 nozzel
shower ... in that case you would simply run larger pipe
(3/4") not a big deal at all.
the actual issue is heat loss through long lines from the
water heater to bathroom sink faucet so you have to run the
faucett a long time to get hot water to wash your hands...
then all the hot water in left in the line cools down, wastes
heat.
the solution for that is an instantaneous water heater under
the sink... for a bath its not the same issue because you
use so much hot water for a bath that whats left in the lines
to cool later is not significant.
on the pressure issues though... your city water pressure is
probably between 40 and 60 psig... loss in 1/2" line at
usual flow rates required for a bath would not exeed 5
psig..insignificant. If you want virtually no pressure loss
go to 3/4" lines...most homes do that for the mains, then
branch with 1/2" to the fixtures, bath tubs and showers will
have 3/4 to the fixtures in virtually all cases.
Phil Scott
>
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| If you want to flush and shower at the same time, install the larger
dia lines. Cost 2X but worth it.
Rock
On 23 Feb 2006 06:26:38 -0800, "DAC" <darwincam@gmail.com> wrote:
>SWMBO and I will be starting a new house build in the next couple of
>months, and we will be doing most of the work together.
>
>The Master bedroom suite bath is about 75' from the utility room in the
>basement, and we're considering installing a tankless water heater in
>the basement near the MB.
>
>We want to minimize pressure drop, what woud be the best way to supply
>the MB bath?
>
>TIA for any guidance/experinces you can provide.
>
>Darwin
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| RicodJour 2006-02-25, 4:23 pm |
| Rock wrote:
> If you want to flush and shower at the same time, install the larger
> dia lines. Cost 2X but worth it.
Not twice the labor.
R
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