I bought a home a few months ago and didn't even think to look at the hot
water heaters.

A friend suggested today that I set the temperatures differentially; and
when I asked why, I realized I had no idea why or to what advantage two
hot water heaters would be set up in serial connections. (I'd have used
one for the teen's bathroom, and another, in parallel, for the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water heaters
in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

On 14 mar, 16:10, Aaron FIsher wrote:
I bought a home a few months ago and didn't even think to look at the hot
water heaters.

A friend suggested today that I set the temperatures differentially; and
when I asked why, I realized I had no idea why or to what advantage two
hot water heaters would be set up in serial connections. (I'd have used
one for the teen's bathroom, and another, in parallel, for the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water heaters
in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

Two 1.5KW elements in serial will split the voltage in two reducing
the power by four so you end up with two 375watt elements.

VD

VirtualDen wrote:
On 14 mar, 16:10, Aaron FIsher wrote:
I bought a home a few months ago and didn't even think to look at
the hot water heaters.

A friend suggested today that I set the temperatures differentially;
and when I asked why, I realized I had no idea why or to what
advantage two hot water heaters would be set up in serial
connections. (I'd have used one for the teen's bathroom, and
another, in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

Two 1.5KW elements in serial will split the voltage in two reducing
the power by four so you end up with two 375watt elements.

VD

i would bet the pipes are in serial, not the electrical system. doing it
your way would mean the water would almost never got above warm.

On 14 mar, 17:24, "chaniarts" wrote:
VirtualDen wrote:
On 14 mar, 16:10, Aaron FIsher wrote:
I bought a home a few months ago and didn't even think to look at
the hot water heaters.

A friend suggested today that I set the temperatures differentially;
and when I asked why, I realized I had no idea why or to what
advantage two hot water heaters would be set up in serial
connections. (I'd have used one for the teen's bathroom, and
another, in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

Two 1.5KW elements in serial will split the voltage in two reducing
the power by four so you end up with two 375watt elements.

VD

i would bet the pipes are in serial, not the electrical system. doing it
your way would mean the water would almost never got above warm.

Ok now that would make more sense.

VD

There are very few such "hacks" that provide any useful
benefit. With the energy efficiency nazis today, the devices
are at max efficiency already.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"VirtualDen"
wrote in message
...

Two 1.5KW elements in serial will split the voltage in two
reducing
the power by four so you end up with two 375watt elements.

VD

"Stormin Mormon" wrote in message
...

There are very few such "hacks" that provide any useful
benefit. With the energy efficiency nazis today, the devices
are at max efficiency already.

How horrible for us all, what will those sadistic fascists think of next.

Next, they will limit the characters typed in usenet posts,
to conserve the energy needed to transmit such messages.
Acronyms will be strictly enforced.

The exchange that formerly had a cascade, flame war, and bad
attitude. Will now be:

MDFO
SBO
DFT
CBLCBW

(My dick fell off!; Solder it back on.; Don't feed the
trolls.; C'mon, boys, lets conserve band width.)

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"DGDevin" wrote in message
m...

How horrible for us all, what will those sadistic fascists
think of next.

On Mar 14, 5:51*pm, "Stormin Mormon"
wrote:
There are very few such "hacks" that provide any useful
benefit. With the energy efficiency nazis today, the devices
are at max efficiency already.

--
Christopher A. Young
Learn more about Jesus
*www.lds.org
.

"VirtualDen"
wrote in ...

Two 1.5KW elements in serial will split the voltage in two
reducing
the power by four so you end up with two 375watt elements.

VD

65% 65EF for the average Ng tank is not efficient, if they had auto
flue dampers on top then you might be 75-80% .

On 14 mar, 16:10, Aaron FIsher wrote:
I bought a home a few months ago and didn't even think to look at the hot
water heaters.

A friend suggested today that I set the temperatures differentially; and
when I asked why, I realized I had no idea why or to what advantage two
hot water heaters would be set up in serial connections. (I'd have used
one for the teen's bathroom, and another, in parallel, for the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water heaters
in parallel?

Oops I missed the part of your questions below. I would say why would
you want them in serial.

Specifically:
- What's the main advantage (is is simply gallonage?)

Two 1.5KW elements in serial will split the voltage in two reducing
the power by four so you end up with two 375watt elements.

- What is the main benefit?

Two 1500 Kw heater

- What is the key drawbacks?

None

And, most importantly:
- Would you set the temperatures differently on them or the same?

I would reduce both to your convenience. You do not really need this
water to be so hot. If it is not to save energy, it is safer for young
children or old people if an accident would happen.

VD

On Mon, 14 Mar 2011 14:25:48 -0700, VirtualDen wrote:
Two 1500 Kw heater

Just for clarification, they're propane hot water heaters.

"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to look at the hot
water heaters.

A friend suggested today that I set the temperatures differentially; and
when I asked why, I realized I had no idea why or to what advantage two
hot water heaters would be set up in serial connections. (I'd have used
one for the teen's bathroom, and another, in parallel, for the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water heaters
in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

More hot water because of the double volume, and faster recovery because you
have double (whatever is heating them)

"RBM" wrote in :


"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to look at the
hot
water heaters.

A friend suggested today that I set the temperatures differentially;
and when I asked why, I realized I had no idea why or to what
advantage two hot water heaters would be set up in serial
connections. (I'd have used one for the teen's bathroom, and another,
in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

More hot water because of the double volume, and faster recovery
because you have double (whatever is heating them)




the hot water from #1 heater going into the second heater (in
series)doesn't get heated unless it's temp is lower than what the
thermostat is set at.
and available volume or flow rate doesn't increase,because a tank can only
flow so much water,and that flow has to go thru the 2nd tank.

a parallel connection allows both tanks to add to the water supply(double
flow) and both tanks do the heating.

I doubt a series connection would pass inspection.

--
Jim Yanik
jyanik
at
localnet
dot com

"Jim Yanik" wrote in message
4...
"RBM" wrote in :


"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to look at the
hot
water heaters.

A friend suggested today that I set the temperatures differentially;
and when I asked why, I realized I had no idea why or to what
advantage two hot water heaters would be set up in serial
connections. (I'd have used one for the teen's bathroom, and another,
in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

More hot water because of the double volume, and faster recovery
because you have double (whatever is heating them)




the hot water from #1 heater going into the second heater (in
series)doesn't get heated unless it's temp is lower than what the
thermostat is set at.
and available volume or flow rate doesn't increase,because a tank can only
flow so much water,and that flow has to go thru the 2nd tank.

a parallel connection allows both tanks to add to the water supply(double
flow) and both tanks do the heating.

I doubt a series connection would pass inspection.

--
Jim Yanik
jyanik
at
localnet
dot com


I'm certainly not talking about installing them is series, and neither is
the OP.

"Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?"

"RBM" wrote in :


"Jim Yanik" wrote in message
4...
"RBM" wrote in :


"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to look at
the hot
water heaters.

A friend suggested today that I set the temperatures
differentially; and when I asked why, I realized I had no idea why
or to what advantage two hot water heaters would be set up in
serial connections. (I'd have used one for the teen's bathroom, and
another, in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

More hot water because of the double volume, and faster recovery
because you have double (whatever is heating them)




the hot water from #1 heater going into the second heater (in
series)doesn't get heated unless it's temp is lower than what the
thermostat is set at.
and available volume or flow rate doesn't increase,because a tank can
only flow so much water,and that flow has to go thru the 2nd tank.

a parallel connection allows both tanks to add to the water
supply(double flow) and both tanks do the heating.

I doubt a series connection would pass inspection.

--
Jim Yanik
jyanik
at
localnet
dot com


I'm certainly not talking about installing them is series, and neither
is the OP.

"Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?"




you better REREAD the post;


A friend suggested today that I set the temperatures
differentially; and when I asked why, I realized I had no idea why
or to what advantage two hot water heaters would be set up in
serial connections.


See,it clearly says "serial" connections. that's same as "in series".

--
Jim Yanik
jyanik
at
localnet
dot com

"Jim Yanik" wrote in message
4...
"RBM" wrote in :


"Jim Yanik" wrote in message
4...
"RBM" wrote in :


"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to look at
the hot
water heaters.

A friend suggested today that I set the temperatures
differentially; and when I asked why, I realized I had no idea why
or to what advantage two hot water heaters would be set up in
serial connections. (I'd have used one for the teen's bathroom, and
another, in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

More hot water because of the double volume, and faster recovery
because you have double (whatever is heating them)




the hot water from #1 heater going into the second heater (in
series)doesn't get heated unless it's temp is lower than what the
thermostat is set at.
and available volume or flow rate doesn't increase,because a tank can
only flow so much water,and that flow has to go thru the 2nd tank.

a parallel connection allows both tanks to add to the water
supply(double flow) and both tanks do the heating.

I doubt a series connection would pass inspection.

--
Jim Yanik
jyanik
at
localnet
dot com


I'm certainly not talking about installing them is series, and neither
is the OP.

"Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?"




you better REREAD the post;


A friend suggested today that I set the temperatures
differentially; and when I asked why, I realized I had no idea why
or to what advantage two hot water heaters would be set up in
serial connections.


See,it clearly says "serial" connections. that's same as "in series".

--
Jim Yanik
jyanik
at
localnet
dot com

I don't know what a serial connection is, but here is the op's quote .
"Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?"

On Mon, 14 Mar 2011 17:06:33 -0500, Jim Yanik
wrote:

"RBM" wrote in :


"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to look at the
hot
water heaters.

A friend suggested today that I set the temperatures differentially;
and when I asked why, I realized I had no idea why or to what
advantage two hot water heaters would be set up in serial
connections. (I'd have used one for the teen's bathroom, and another,
in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

More hot water because of the double volume, and faster recovery
because you have double (whatever is heating them)




the hot water from #1 heater going into the second heater (in
series)doesn't get heated unless it's temp is lower than what the
thermostat is set at.
and available volume or flow rate doesn't increase,because a tank can only
flow so much water,and that flow has to go thru the 2nd tank.

a parallel connection allows both tanks to add to the water supply(double
flow) and both tanks do the heating.

I doubt a series connection would pass inspection.
It is not that uncommon, so MUST pass inspection. It uses the same
theory as the dual element electric water heater, where the bottom
element heats the cold water that comes from the mains or well, and
the top element heats the warmed water. It will more than double the
amount of hot water available.

On 3/14/2011 4:10 PM, Aaron FIsher wrote:
I bought a home a few months ago and didn't even think to look at the hot
water heaters.

A friend suggested today that I set the temperatures differentially; and
when I asked why, I realized I had no idea why or to what advantage two
hot water heaters would be set up in serial connections. (I'd have used
one for the teen's bathroom, and another, in parallel, for the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water heaters
in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

Which is it? Series or parallel? Or do you want to go from parallel to
series?

I worked in a restaurant that had 5 gas heaters in series. The last one
in line was hot all the time. When it dropped to a certain temp, it
stayed on and turned on the previous heater so it would be suppling warm
water to the last heater and so on down the line. The owner was a
retired engineer. The purpose was to only heat one tank when that's all
that was needed, and as the need for more hot water rose, the other
heaters kicked on as needed. You could get over 20 gallons of hot water
a minute continuous, never letting the temp fall below... I think it was
150F.

On Mon, 14 Mar 2011 17:31:28 -0400, Tony Miklos wrote:
Which is it? Series or parallel? Or do you want to go from parallel to
series?

My mistake for not being clear.

They are clearly in series.

The well pumps the cold water which goes to a four-foot high blue steel
bladder tank which goes to the first 50 gallon hot water heater which
goes to the second 50 gallon hot water heater in series which somehow
goes to a hot-water recirculation motor about the size of a small bench
grinder motor ... which goes to the bathrooms, laundry room, and kitchen.

My question is why (I'm slowly learning why) and what to set the
temperature at (since it's currently set the same for both at about 130
degrees or so).

Aaron FIsher wrote:
On Mon, 14 Mar 2011 17:31:28 -0400, Tony Miklos wrote:
Which is it? Series or parallel? Or do you want to go from parallel to
series?

My mistake for not being clear.

They are clearly in series.

The well pumps the cold water which goes to a four-foot high blue steel
bladder tank which goes to the first 50 gallon hot water heater which
goes to the second 50 gallon hot water heater in series which somehow
goes to a hot-water recirculation motor about the size of a small bench
grinder motor ... which goes to the bathrooms, laundry room, and kitchen.

My question is why (I'm slowly learning why) and what to set the
temperature at (since it's currently set the same for both at about 130
degrees or so).
I have seen the tandem system used only once, by a co-worker.
He had a big unit, working on night-current only(very cheap in our
country), and a small unit after it, using day- and night-current.
The small unit would quickly heat(big heating element), and would be fed
with cooler water later in the day.
That combi had a rather constant water temperature for a
reasonable price.
Thermostats were the same on both machines.

On Mar 14, 4:10*pm, Aaron FIsher wrote:
I bought a home a few months ago and didn't even think to look at the hot
water heaters.

A friend suggested today that I set the temperatures differentially; and
when I asked why, I realized I had no idea why or to what advantage two
hot water heaters would be set up in serial connections. (I'd have used
one for the teen's bathroom, and another, in parallel, for the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water heaters
in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

See http://www.chinawinds.co.uk/diy_tips..._parallel.html.

Basically, in series connection, the first one (which gets the cold
water) normally does most of the work. The second one, which normally
gets pre-heated water, does much less work. During periods of low
draw, it may do no work at all, if the inlet water is already at its
set point.

So if they're in series, you might consider reducing the setpoint of
the first one, to balance the workload of the two units, ie, have them
each heat the water by the same number of degrees. That's assuming
there is some advantage to doing so. Presumably the lifetime of the
heating elements (or burners) is basically so many hours of actually
making heat. Offhand I can't see how the lifetime of the tank or the
anodes, would vary by workload. Actually I've never heard of a burner
failing, and elements and anodes are replaceable, so maybe workload
doesn't matter much.

Arguably, keeping one of them at a lower setpoint may reduce standby
losses from it, too.

Chip C
Toronto.

"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to look at the hot
water heaters.

A friend suggested today that I set the temperatures differentially; and
when I asked why, I realized I had no idea why or to what advantage two
hot water heaters would be set up in serial connections. (I'd have used
one for the teen's bathroom, and another, in parallel, for the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water heaters
in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the same?

Lots of hot water when you need it.

I have only been in one house plumbed that way. It was an older couple who
only turned on the breaker for the first unit in the series when the family
came to visit. They did claim that the tempering factor of bringing the
water into the basement pre-warmed it a little in the winter. That seems
somewhat reasonable to me. The rest of the time the one was just fine for
them.

If I were running both at the same time, all the time, I would set the
first in the series a little lower, as low as fit my needs. The second one
would be set to deliver water at the temp I wanted. I would do this to save
the standby loss on the first unit. Unless you are filling the big tub or
have a large family 50 gallons is adequate for most needs.


--
Colbyt
Please come visit http://www.househomerepair.com

On Mon, 14 Mar 2011 18:04:33 -0400, Colbyt wrote:
If I were running both at the same time, all the time, I would set the
first in the series a little lower, as low as fit my needs. ...
I would do this to save the standby loss on the first unit.

Interesting.

I might even turn OFF the first hot water heater (or set it to something
really low, like 50 degrees or something).

The only one who uses a lot of hot water is the teenager (and that kid
can freeze because there is no reason to take an hour-long shower anyway).

I wonder if this will affect the hot-water recirculating system adversely
though?

On 3/21/2011 10:46 PM, Aaron FIsher wrote:
On Mon, 14 Mar 2011 18:04:33 -0400, Colbyt wrote:
If I were running both at the same time, all the time, I would set the
first in the series a little lower, as low as fit my needs. ...
I would do this to save the standby loss on the first unit.

Interesting.

I might even turn OFF the first hot water heater (or set it to something
really low, like 50 degrees or something).

The only one who uses a lot of hot water is the teenager (and that kid
can freeze because there is no reason to take an hour-long shower anyway).


Long time since you were a teenager, huh? A long hot shower can feel
real friendly sometimes.

--
aem sends...

Why would you want to heat hot water, it's already hot?

Parallel operation allows for higher GPM flow.

Series operation allows you to balance which one does the
most heating. Not sure there's any advantage to that.

Either operation can be set up to bypass one heater during
replacement of the WH.

The teens shower off WH 1 makes good sense, to me.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Aaron FIsher" wrote in message
...
I bought a home a few months ago and didn't even think to
look at the hot
water heaters.

A friend suggested today that I set the temperatures
differentially; and
when I asked why, I realized I had no idea why or to what
advantage two
hot water heaters would be set up in serial connections.
(I'd have used
one for the teen's bathroom, and another, in parallel, for
the rest of
the house.)

Anyway, what's the THEORY and RATIONALE for having two hot
water heaters
in parallel?

Specifically:
- What's the main advantage (is is simply gallonage?)
- What is the main benefit?
- What is the key drawbacks?
And, most importantly:
- Would you set the temperatures differently on them or the
same?

On Mon, 14 Mar 2011 18:49:47 -0400, "Stormin Mormon"
wrote:

Why would you want to heat hot water, it's already hot?

Parallel operation allows for higher GPM flow.

Series operation allows you to balance which one does the
most heating. Not sure there's any advantage to that.

Either operation can be set up to bypass one heater during
replacement of the WH.

The teens shower off WH 1 makes good sense, to me.
Even with series connection you can run kids shower off the first
one and dishwasher off the second, etc. The first one heats to a
preset safe temperature, and the second heats to a higher temperature,
using only as much power as is required to raise the temperature that
amount - and can deliver a whole lot of hot water without any
significant drop in temperature.

That's what I thought, but went back and looked. The fellow
with the teens HW tap, figured two WH to serve different
parts of the house. I think the teens shower off WH1, out of
two, makes great sense.

With that set up, parents filling a tub might leave the
teens with less hot water. Maybe not, though. The parents HW
would have to be tempered with a lot of cold, so maybe
that's less an issue.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..



wrote in message
...

Even with series connection you can run kids shower off
the first
one and dishwasher off the second, etc. The first one heats
to a
preset safe temperature, and the second heats to a higher
temperature,
using only as much power as is required to raise the
temperature that
amount - and can deliver a whole lot of hot water without
any
significant drop in temperature.

On Mon, 14 Mar 2011 20:45:22 -0400, wrote:


Even with series connection you can run kids shower off the first
one and dishwasher off the second, etc. The first one heats to a
preset safe temperature, and the second heats to a higher temperature,
using only as much power as is required to raise the temperature that
amount - and can deliver a whole lot of hot water without any
significant drop in temperature.

What temp do you all keep your hot water at.

I like that mine is not hot enough to burn me, but it would probably
wash the dishes better if it were hotter, and it would be easier to
get the bathtub warm when it cooled off or I made it too cold.

So what temp do you all use?????????

In article ,
mm wrote:

What temp do you all keep your hot water at.

I like that mine is not hot enough to burn me, but it would probably
wash the dishes better if it were hotter, and it would be easier to
get the bathtub warm when it cooled off or I made it too cold.

So what temp do you all use?????????

We just had this discussion last week. 140F.

On Tue, 15 Mar 2011 00:25:28 -0700, Smitty Two
wrote:

In article ,
mm wrote:

What temp do you all keep your hot water at.

I like that mine is not hot enough to burn me, but it would probably
wash the dishes better if it were hotter, and it would be easier to
get the bathtub warm when it cooled off or I made it too cold.

So what temp do you all use?????????

We just had this discussion last week. 140F.

I missed it, I think. I think 140 is what the seller of the house
told me. I have to find my thermometer.

Thanks.

And six weeks later, someone to ask again how to change a
light bulb.



Q: How many people does it take to change a light bulb in
cyberspace?
Answer: 1331
-1 to successfully change the light bulb and to post to the
mail list that the light bulb has been changed
-14 to share similar experiences of changing light bulbs and
how the light bulb could have been changed differently.
-7 to caution about the dangers of changing light bulbs.
-27 to point out spelling/grammar errors in posts about
changing light bulbs.
-53 to flame the spell checkers
-156 to write to the list administrator complaining about
the light bulb discussion and its inappropriateness to this
mail list.
-41 to correct spelling in the spelling/grammar flames.
-109 to post that this list is not about light bulbs and to
please take this email exchange to alt.lite.bulb
-203 to demand that cross posting to alt.grammar,
alt.spelling and alt.punctuation about changing light bulbs
be stopped.
-111 to defend the posting to this list saying that we are
all using light
-bulbs and therefore the posts **are** relevant to this mail
list.
-306 to debate which method of changing light bulbs is
superior, where to buy the best light bulbs, what brand of
light bulbs work best for this technique, and what brands
are faulty.
-27 to post URLs where one can see examples of different
light bulbs
-14 to post that the URLs were posted incorrectly, and to
post corrected URLs.
-3 to post about links they found from the URLs that are
relevant to this list which makes light bulbs relevant to
this list.
-33 to concatenate all posts to date, then quote them
including all headers and footers, and then add "Me Too."
-12 to post to the list that they are unsubscribing because
they cannot handle the lightbulb controversy.
-19 to quote the "Me Too's" to say, "Me Three."
-4 to suggest that posters request the light bulb FAQ.
-1 to propose new alt.change.lite.bulb newsgroup.
-47 to say this is just what alt.physic.cold_fusion was
meant for, leave it here.
-143 votes for a new list alt.lite.bulb.
-38 votes proclaiming the advantages in using vintage
lightbulbs


--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Smitty Two" wrote in message
news

So what temp do you all use?????????

We just had this discussion last week. 140F.

On 3/15/2011 1:23 AM, mm wrote:
On Mon, 14 Mar 2011 20:45:22 -0400, wrote:


Even with series connection you can run kids shower off the first
one and dishwasher off the second, etc. The first one heats to a
preset safe temperature, and the second heats to a higher temperature,
using only as much power as is required to raise the temperature that
amount - and can deliver a whole lot of hot water without any
significant drop in temperature.

What temp do you all keep your hot water at.

I like that mine is not hot enough to burn me, but it would probably
wash the dishes better if it were hotter, and it would be easier to
get the bathtub warm when it cooled off or I made it too cold.

So what temp do you all use?????????

Mine's about 145. Use less hot water the hotter it is. duh.

--
Steve Barker
remove the "not" from my address to email

On Tue, 15 Mar 2011 09:54:19 -0500, Steve Barker
wrote:

On 3/15/2011 1:23 AM, mm wrote:
On Mon, 14 Mar 2011 20:45:22 -0400, wrote:


Even with series connection you can run kids shower off the first
one and dishwasher off the second, etc. The first one heats to a
preset safe temperature, and the second heats to a higher temperature,
using only as much power as is required to raise the temperature that
amount - and can deliver a whole lot of hot water without any
significant drop in temperature.

What temp do you all keep your hot water at.

I like that mine is not hot enough to burn me, but it would probably
wash the dishes better if it were hotter, and it would be easier to
get the bathtub warm when it cooled off or I made it too cold.

So what temp do you all use?????????

Mine's about 145. Use less hot water the hotter it is. duh.

I thought I posted alreay. I'll try 145 also. Thanks.

On Tue, 15 Mar 2011 02:23:08 -0400, mm wrote:
What temp do you all keep your hot water at.

I have it set to 130 degrees for both tanks.

When it comes out in the kitchen, it's a bit too hot to touch, but, the
upstairs bedroom and jacuzzi are just right (which from experience means
it's about 100 to 105 degrees if I remember rightly).

There is also a recirculating system which runs frequently (about once an
hour or so) to allow the water to be hot quickly.

On Mar 14, 8:45*pm, wrote:
On Mon, 14 Mar 2011 18:49:47 -0400, "Stormin Mormon"

wrote:
Why would you want to heat hot water, it's already hot?

Parallel operation allows for higher GPM flow.

I fail to see how too in parallel are going to allow for a higher GPM.
The GPM is going to be largely determined by the incoming pipe
size and water pressure. After the water leaves the water heaters,
it flow through the same pipes, so again the flow rate is going to
be determined by those pipes, faucets, etc. Following that logic,
I could just cut out a small section of 1" pipe in a water system,
replace it with too parallel sections, and voila I'd have a higher
flow rate. This would only be true if the eqpt being paralleled
offered signficant flow restriction. Not the case with a water
heater.



Series operation allows you to balance which one does the
most heating. Not sure there's any advantage to that.

Either operation can be set up to bypass one heater during
replacement of the WH.

The teens shower off WH 1 makes good sense, to me.

* Even with series connection you can run kids shower off the first
one and dishwasher off the second, etc.

Not without replumbing the house he bought, which didn't seem to
be the objective.


The first one heats to a
preset safe temperature, and the second heats to a higher temperature,
using only as much power as is required to raise the temperature that
amount - and can deliver a whole lot of hot water without any
significant drop in temperature.

Aaron FIsher wrote:
I bought a home a few months ago and didn't even think to look at the
hot water heaters.

A friend suggested today that I set the temperatures differentially;
and when I asked why, I realized I had no idea why or to what
advantage two hot water heaters would be set up in serial
connections. (I'd have used one for the teen's bathroom, and another,
in parallel, for the rest of the house.)

Anyway, what's the THEORY and RATIONALE for having two hot water
heaters in parallel?

You ask about in series, then in parrallel. What do you really want?

One house I know has 2 in series to allow them to fill the huge spa with hot
enough water.

On Mon, 14 Mar 2011 23:40:08 -0700, Bob F wrote:
You ask about in series, then in parrallel. What do you really want?

They are clearly set up in series.

I just want to know why anyone would do this and what I should set the
heat at (both are currently set at 130 degrees) for each.

There is also a hot-water recirculating motor (which runs frequently).

On Tue, 22 Mar 2011 02:40:49 +0000 (UTC), Aaron FIsher
wrote:

On Mon, 14 Mar 2011 23:40:08 -0700, Bob F wrote:
You ask about in series, then in parrallel. What do you really want?

They are clearly set up in series.

I just want to know why anyone would do this and what I should set the
heat at (both are currently set at 130 degrees) for each.

There is also a hot-water recirculating motor (which runs frequently).

No reason for this setup except to heat 100 gallons of water in 2 50
gallon tanks.
Maybe the expense of a 100 gallon tank makes it more economical to use
2 50's.
If you don't need all this hot water you could turn off the gas on the
one closest to the cold water supply and kill the electric to the
recirc pump.
If your water supply is cold the first tank would act as a tempering
tank and would usually give you a longer duration of hot water from
the active tank.
Or completely disconnect the first tank and hold it as a spare.
Sounds like your system is working as intended to heat 100 gallons.
Up to you how economical you want to be.
Heating and keeping hot 100 gallons of water has costs.

--Vic

On Mon, 21 Mar 2011 21:54:51 -0500, Vic Smith wrote:
If your water supply is cold the first tank would act as a tempering
tank and would usually give you a longer duration of hot water from the
active tank.

The water is pumped out of the ground from a well and then kept in two
five thousand gallon tanks. So, the cold water is probably just a bit
colder than outside air temperature. I never noticed it being
particularly cold (it never freezes here) but I never thought about it
before.

On Mar 21, 11:29*pm, Aaron FIsher wrote:
On Mon, 21 Mar 2011 21:54:51 -0500, Vic Smith wrote:
If your water supply is cold the first tank would act as a tempering
tank and would usually give you a longer duration of hot water from the
active tank.

The water is pumped out of the ground from a well and then kept in two
five thousand gallon tanks.

That's a new one and quite unusual. Whover set this up must be a
survivalist.

On Mon, 21 Mar 2011 21:54:51 -0500, Vic Smith
wrote:

On Tue, 22 Mar 2011 02:40:49 +0000 (UTC), Aaron FIsher
wrote:

On Mon, 14 Mar 2011 23:40:08 -0700, Bob F wrote:
You ask about in series, then in parrallel. What do you really want?

They are clearly set up in series.

I just want to know why anyone would do this and what I should set the
heat at (both are currently set at 130 degrees) for each.

There is also a hot-water recirculating motor (which runs frequently).

No reason for this setup except to heat 100 gallons of water in 2 50
gallon tanks.
Maybe the expense of a 100 gallon tank makes it more economical to use
2 50's.
If you don't need all this hot water you could turn off the gas on the
one closest to the cold water supply and kill the electric to the
recirc pump.
If your water supply is cold the first tank would act as a tempering
tank and would usually give you a longer duration of hot water from
the active tank.
Or completely disconnect the first tank and hold it as a spare.
Sounds like your system is working as intended to heat 100 gallons.
Up to you how economical you want to be.
Heating and keeping hot 100 gallons of water has costs.

--Vic

Fot the use it is set up for I would set the first (tempering) tank
lower than the second tank, or as mentioned previously, shut it off.

Having it TOO low just encourages bacterial growth, particularly if
the hot water demand is low.