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Default Domestic Hot water question

ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.

my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward to
my taps. What I want to do is put in a non-heated storage tank (about 40
gallon) right after it comes out of the furnace. So when I turn on the hot
water taps, it immediately comes from the storage tank, as it gets filled by
the hot water coming from the furnace.

The tank would obviously be insulated very well to keep in the heat. Temp
of water going into the tank would be about 180-190 degrees.

Does anyone see any problems with this setup? Have any suggestions or
comments? I'm just throwing this idea out there.

My storage tank is an old oil fired hot water tank.

Thanks,
Steve Cornick


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Default Domestic Hot water question


"Steve" wrote in message
...
ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.

my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward
to my taps. What I want to do is put in a non-heated storage tank (about
40 gallon) right after it comes out of the furnace. So when I turn on the
hot water taps, it immediately comes from the storage tank, as it gets
filled by the hot water coming from the furnace.

The tank would obviously be insulated very well to keep in the heat. Temp
of water going into the tank would be about 180-190 degrees.

Does anyone see any problems with this setup? Have any suggestions or
comments? I'm just throwing this idea out there.

My storage tank is an old oil fired hot water tank.

Thanks,
Steve Cornick




You may have several existing problems. With a domestic coil, the boiler
should be maintaining hot water all the time, and should only need to fire
when it's temp drops below the set minimum temperature. Your taps may be to
far from the boiler and need a recirculating loop and pump installed to
maintain hot water in the lines near the taps. If you want to use a storage
tank, the most efficient thing to do, is get an indirect water heater, an
insulated tank with a big coil in it, controlled by an aquastat and
circulating pump off the boiler




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Default Domestic Hot water question

Steve wrote:
ok, my source of heating my domestic hot water is a oil fired hot
water radiation furnace system.

my problem is it takes way too long from the time I turn on my hot
water taps to the point where i actually get hot water. The furnace
has to turn on, water has to flow though the coil in the furnace and
then flow upward to my taps. What I want to do is put in a
non-heated storage tank (about 40 gallon) right after it comes out of
the furnace. So when I turn on the hot water taps, it immediately
comes from the storage tank, as it gets filled by the hot water
coming from the furnace.
The tank would obviously be insulated very well to keep in the heat. Temp
of water going into the tank would be about 180-190 degrees.

Does anyone see any problems with this setup? Have any suggestions or
comments? I'm just throwing this idea out there.

My storage tank is an old oil fired hot water tank.


Wouldn't your scheme mean you'd have to drain an extra 40 gallons from the
system before your morning shower? That is, can you provide enough
insulation to maintain an acceptable temperature for 12 or more hours?


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Default Domestic Hot water question

That's a good questoin. I guess I'd have to try it and find out what
temperature I can maintain and for how long.

Steve

"HeyBub" wrote in message

Wouldn't your scheme mean you'd have to drain an extra 40 gallons from the
system before your morning shower? That is, can you provide enough
insulation to maintain an acceptable temperature for 12 or more hours?



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Default Domestic Hot water question

On Mar 27, 6:37*am, "Steve" wrote:
ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.

my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. *The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward to
my taps. *What I want to do is put in a non-heated storage tank (about 40
gallon) right after it comes out of the furnace. *So when I turn on the hot
water taps, it immediately comes from the storage tank, as it gets filled by
the hot water coming from the furnace.

The tank would obviously be insulated very well to keep in the heat. *Temp
of water going into the tank would be about 180-190 degrees.

Does anyone see any problems with this setup? *Have any suggestions or
comments? *I'm just throwing this idea out there.

My storage tank is an old oil fired hot water tank.

Thanks,
Steve Cornick


Your idea is a good one but may not be needed. Your domestic hot
water thermostst may be bad. When I had an oil fired furnace/water
heater the domestic water was hot all the time.

If you want to go with a storage tank they make them that behave as an
additional heating zone on your furnace.
http://www.ebuild.com/articles/521433.hwx

If the problem is that your faucets are too far away you may want to
consider a hot water recirculation loop. This would require more
plumbing work and depending on your house tearing into walls.
http://www.redytemp.com/hot-water-re...w-it-works.htm



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Default Domestic Hot water question

On Mar 27, 7:33*am, Limp Arbor wrote:
On Mar 27, 6:37*am, "Steve" wrote:





ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.


my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. *The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward to
my taps. *What I want to do is put in a non-heated storage tank (about 40
gallon) right after it comes out of the furnace. *So when I turn on the hot
water taps, it immediately comes from the storage tank, as it gets filled by
the hot water coming from the furnace.


The tank would obviously be insulated very well to keep in the heat. *Temp
of water going into the tank would be about 180-190 degrees.


Does anyone see any problems with this setup? *Have any suggestions or
comments? *I'm just throwing this idea out there.


My storage tank is an old oil fired hot water tank.


Thanks,
Steve Cornick


Your idea is a good one but may not be needed. *Your domestic hot
water thermostst may be bad. *When I had an oil fired furnace/water
heater the domestic water was hot all the time.

If you want to go with a storage tank they make them that behave as an
additional heating zone on your furnace.http://www.ebuild.com/articles/521433.hwx

If the problem is that your faucets are too far away you may want to
consider a hot water recirculation loop. *This would require more
plumbing work and depending on your house tearing into walls.http://www.redytemp.com/hot-water-re...-it-works.htm- Hide quoted text -

- Show quoted text -



Lots of good advice above. To which I'd add, that if you were to
implement a storage tank, I'd probably just get an electric water
heater as the storage tank. That way it's guaranteed to have water
at or above X temp. Since you'd be pre-heating the water, the
electric usage would be very small. In the off heating season
months, it may also be cheaper to just use the electric heater.
Electric costs more, but it's 100% efficient, vs a lot less for a
boiler that's just being used for hot water.
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Default Domestic Hot water question



wrote:
On Mar 27, 7:33 am, Limp Arbor wrote:
On Mar 27, 6:37 am, "Steve" wrote:





ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.
my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward to
my taps. What I want to do is put in a non-heated storage tank (about 40
gallon) right after it comes out of the furnace. So when I turn on the hot
water taps, it immediately comes from the storage tank, as it gets filled by
the hot water coming from the furnace.
The tank would obviously be insulated very well to keep in the heat. Temp
of water going into the tank would be about 180-190 degrees.
Does anyone see any problems with this setup? Have any suggestions or
comments? I'm just throwing this idea out there.
My storage tank is an old oil fired hot water tank.
Thanks,
Steve Cornick

Your idea is a good one but may not be needed. Your domestic hot
water thermostst may be bad. When I had an oil fired furnace/water
heater the domestic water was hot all the time.

If you want to go with a storage tank they make them that behave as an
additional heating zone on your furnace.
http://www.ebuild.com/articles/521433.hwx

If the problem is that your faucets are too far away you may want to
consider a hot water recirculation loop. This would require more
plumbing work and depending on your house tearing into walls.http://www.redytemp.com/hot-water-re...-it-works.htm- Hide quoted text -

- Show quoted text -



Lots of good advice above. To which I'd add, that if you were to
implement a storage tank, I'd probably just get an electric water
heater as the storage tank. That way it's guaranteed to have water
at or above X temp. Since you'd be pre-heating the water, the
electric usage would be very small. In the off heating season
months, it may also be cheaper to just use the electric heater.
Electric costs more, but it's 100% efficient, vs a lot less for a
boiler that's just being used for hot water.


If you add an electric water heater be sure to set its temperature below
the furnace water temperature. This way the electric only draws
current when the furnace cannot keep up with the load.

EJ in NJ
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Default Domestic Hot water question

Someone posted this link recently and I thought it looked like an
interesting approach:

http://www.chilipepperapp.com/

If you click around the website it explains the whole system in detail, how
it works, etc.

Steve wrote:
ok, my source of heating my domestic hot water is a oil fired hot
water radiation furnace system.

my problem is it takes way too long from the time I turn on my hot
water taps to the point where i actually get hot water. The furnace
has to turn on, water has to flow though the coil in the furnace and
then flow upward to my taps. What I want to do is put in a
non-heated storage tank (about 40 gallon) right after it comes out of
the furnace. So when I turn on the hot water taps, it immediately
comes from the storage tank, as it gets filled by the hot water
coming from the furnace.
The tank would obviously be insulated very well to keep in the heat. Temp
of water going into the tank would be about 180-190 degrees.

Does anyone see any problems with this setup? Have any suggestions or
comments? I'm just throwing this idea out there.

My storage tank is an old oil fired hot water tank.

Thanks,
Steve Cornick



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Default Domestic Hot water question

On Mar 27, 9:18*am, Ernie Willson wrote:
wrote:
On Mar 27, 7:33 am, Limp Arbor wrote:
On Mar 27, 6:37 am, "Steve" wrote:


ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.
my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. *The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward to
my taps. *What I want to do is put in a non-heated storage tank (about 40
gallon) right after it comes out of the furnace. *So when I turn on the hot
water taps, it immediately comes from the storage tank, as it gets filled by
the hot water coming from the furnace.
The tank would obviously be insulated very well to keep in the heat. *Temp
of water going into the tank would be about 180-190 degrees.
Does anyone see any problems with this setup? *Have any suggestions or
comments? *I'm just throwing this idea out there.
My storage tank is an old oil fired hot water tank.
Thanks,
Steve Cornick
Your idea is a good one but may not be needed. *Your domestic hot
water thermostst may be bad. *When I had an oil fired furnace/water
heater the domestic water was hot all the time.


If you want to go with a storage tank they make them that behave as an
additional heating zone on your furnace.http://www.ebuild.com/articles/521433.hwx


If the problem is that your faucets are too far away you may want to
consider a hot water recirculation loop. *This would require more
plumbing work and depending on your house tearing into walls.http://www.redytemp.com/hot-water-re...works.htm-Hide quoted text -


- Show quoted text -


Lots of good advice above. *To which I'd add, that if you were to
implement a storage tank, I'd probably just get an electric water
heater as the storage tank. * That way it's guaranteed to have water
at or above X temp. *Since you'd be pre-heating the water, the
electric usage would be very small. * In the off heating season
months, it may also be cheaper to just use the electric heater.
Electric costs more, but it's 100% efficient, vs a lot less for a
boiler that's just being used for hot water.


If you add an electric water heater be sure to set its temperature below
* *the furnace water temperature. This way the electric only draws
current when the furnace cannot keep up with the load.

EJ in NJ- Hide quoted text -

- Show quoted text -



I see the real purpose of the electric water heater being to kick in
to MAINTAIN the tank temp, ie make up for the slow cooling of the
water, not to increase the ability to handle a load. If you just had
a 40 gallon storage tank with no heating capability, you'd have a
problem when it does cool down. For example, you go on vacation for a
week. Then you'd have to go through 40 gallons of cool water sitting
in the tank.

I do agree the temp of the water heater should be lower than the temp
of the boiler hot water. Still, the bigger problem is that something
is clearly wrong here. Boiler delivered hot water should not take a
long time.
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Default Domestic Hot water question

At my mothers house, she has an Amitrol BoilerMate water tank. It has
a connection to an oil fired boiler. When the water in the tank drops
below a certain temperature it signals the boiler to come on. The
boiler heats water and it is sent through a coil in the BoilerMate to
heat the water in the tank.


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"Steve" wrote in message
...
ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.

my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. The furnace has to
turn on, water has to flow though the coil in the furnace and then flow
upward to my taps. What I want to do is put in a non-heated storage tank
(about 40 gallon) right after it comes out of the furnace. So when I
turn on the hot water taps, it immediately comes from the storage tank,
as it gets filled by the hot water coming from the furnace.

The tank would obviously be insulated very well to keep in the heat.
Temp of water going into the tank would be about 180-190 degrees.

Does anyone see any problems with this setup? Have any suggestions or
comments? I'm just throwing this idea out there.

My storage tank is an old oil fired hot water tank.

Thanks,
Steve Cornick


You have one of the most inefficient systems available. Makes a lot of hot
water, but not very economical. That coil is not well insulated and the
boiler kicks on too often just to keep some water hot. Last year I had a
new boiler and indirect fired water heater installed. My oil savings so far
are 32% for the same number of degree days.

This is what I have.
http://www.energykinetics.com/produc...ry.shtml#tanks The first hour
water draw is over 200 gallons.

With the new boiler and water heater, I expect to save about 250 gallons of
oil a year. Depending on the price of oil, payback will be from 6 to 12
years. TI was ready for a new boiler so I bought the most efficient I could
find.
--
Ed
http://pages.cthome.net/edhome/


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On Mar 27, 5:37*am, "Steve" wrote:
ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.

my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. *The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward to
my taps. *What I want to do is put in a non-heated storage tank (about 40
gallon) right after it comes out of the furnace. *So when I turn on the hot
water taps, it immediately comes from the storage tank, as it gets filled by
the hot water coming from the furnace.

The tank would obviously be insulated very well to keep in the heat. *Temp
of water going into the tank would be about 180-190 degrees.

Does anyone see any problems with this setup? *Have any suggestions or
comments? *I'm just throwing this idea out there.

My storage tank is an old oil fired hot water tank.

Thanks,
Steve Cornick


I can not see how what you have now, even if it was working correctly
is an efficient way to heat water in summer when the boiler is off. A
storage tank will just cool and waste energy if you pay to heat it to
180-190. Depending on your KWH cost a seperate Propane water heater
tank or electric is an idea. In winter what you have should heat
fairly efficiently. Look at a System 2000 for oil its better all
around.
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On Mar 28, 6:34*am, ransley wrote:
On Mar 27, 5:37*am, "Steve" wrote:





ok, my source of heating my domestic hot water is a oil fired hot water
radiation furnace system.


my problem is it takes way too long from the time I turn on my hot water
taps to the point where i actually get hot water. *The furnace has to turn
on, water has to flow though the coil in the furnace and then flow upward to
my taps. *What I want to do is put in a non-heated storage tank (about 40
gallon) right after it comes out of the furnace. *So when I turn on the hot
water taps, it immediately comes from the storage tank, as it gets filled by
the hot water coming from the furnace.


The tank would obviously be insulated very well to keep in the heat. *Temp
of water going into the tank would be about 180-190 degrees.


Does anyone see any problems with this setup? *Have any suggestions or
comments? *I'm just throwing this idea out there.


My storage tank is an old oil fired hot water tank.


Thanks,
Steve Cornick


I can not see how what you have now, even if it was working correctly
is an efficient way to heat water in summer when the boiler is off.


An oil-fired furnace that provides domestic hot water is in effect an
instant water heater. They only keep a few gallons of water hot when
idle and can easily keep up with showering and washing clothes.
Another benefit is the furnace stays running year round and doesn't
collect moisture and rust out.

A
storage tank will just cool and waste energy if you pay to heat it to
180-190.


That is exactly what an electric/propane/gas water heater does/is so
it would be just as efficient and ignoring the sillyness of last year
oil is cheaper than gas and way cheaper than electric.

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"Limp Arbor" wrote in message

An oil-fired furnace that provides domestic hot water is in effect an
instant water heater. They only keep a few gallons of water hot when
idle and can easily keep up with showering and washing clothes.
Another benefit is the furnace stays running year round and doesn't
collect moisture and rust out.

************************************************** *****

Next to electric though, it is the most expensive way to heat water in the
off heating season. Many times at night I'd lay in bed and hear the boiler
turn on to keep the water hot as it is a poorly insulated setup. The
utility are is also considerably warmer than it has to be from the heat lost
to atmosphere. With my new system, that part of the house has dropped about
10 degrees. There are many better ways of heating water. Yes, it does keep
up as you say, but at a cost.


A
storage tank will just cool and waste energy if you pay to heat it to
180-190.


That is exactly what an electric/propane/gas water heater does/is so
it would be just as efficient and ignoring the sillyness of last year
oil is cheaper than gas and way cheaper than electric.

************************************************** ****
Keeping 40 or 50 gallons hot in a well insualted tank is economical though.
My tanks loses about 6 degrees in 24 hours. It can go a day, maybe two,
without the boiler running at all. New tanks generally have two inches of
foam insulation on all sides. It should not be heated to 180 degrees
anyway. 130 is sufficient.

As for oil cheaper than gas, perhaps where you live. Where I live it is
about 50% higher.


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