For Unlimited Hot Water on Demand...Choose the
Artesian's Unsurpassed Heating Effectiveness
The Artesian's tank contains circulating boiler water which heats domestic water
flowing through three copper coils. This process provides unlimited hot water
at consistently high temperatures and virtually eliminates corrosive failure of
the tank because no fresh water is introduced.
By substantially lowering water heating costs, the Artesian Indirect Water
Heater will immediately begin paying returns on the home or business owner's
initial investment. In addition, the Artesian can enhance boiler operating
efficiency for even greater savings.
Artesian Benefits:
Why Heat Domestic Hot Water with an Indirect Water Tank:
Many homeowners are accustomed to the traditional direct fired water tank as
their source of domestic hot water. Advancements in hydronic heating technology
(hot water heat) have opened a new avenue for heating domestic hot water
– the Indirect Hot Water Heater.
An indirect hot water heater, like Dunkirk's Artesian Model, provides a superior
method for providing domestic hot water. Before you buy another water tank
consider these benefits:
1. No Burner to Service or Maintain
Unlike a traditional hot water tank, the Artesian Indirect does not have any
burners or electric elements. Instead, the Artesian uses boiler water to heat
your domestic water for cooking, bathing, etc.
Since the Artesian does not have a burner, it is a much simpler system –
fewer components to maintain or replace in the future. In addition, since there
is no burner, no vent pipe is required. This allows the Artesian to be located
in almost any place in your house.
Plus – unlike standard hot water tanks, the Artesian is backed by a
limited lifetime warranty on the tank and the heat exchanger.
The simplicity of the Artesian and the excellent warranty may make this the last
hot water tank you may ever need to purchase.
2. Higher Efficiency
The Artesian Indirect works in conjunction with a hydronic heating system. The
heart of this system, the boiler, by law must have a minimum efficiency of 80%
A.F.U.E. while models like the Quantum Leap have efficiencies as high as 95%.
Even at the lowest boiler efficiency, the Artesian and a hydronic heating
boiler provide a better system efficiency than a typical stand alone hot water
tank.
Gas fired water heaters lose heat quickly when they are not running, because air
is going up the flue – cooling the water you just paid to heat. When the
Artesian is not running, heat loss is less than ½ °F per hour
ensuring that hot water will be ready when you need it. A Dunkirk Boiler and
Artesian Indirect will help to save you money on your heating bill.
3. Maximize System Performance
During the heating season, the hot water generated for space heating can also
serve a secondary role – heating domestic water. Often the boiler has
excess heated water available after your home heating demand has been
satisfied. You can recover that energy, normally lost, for heating your
domestic hot water. In effect, during the heating season, you can heat much of
your domestic hot water for free.
Maximizing the use of the boiler improves the overall system efficiency and
helps to reduce your winter fuel bills.
Why The Artesian is Better than a Storage Tank Indirect?
Dunkirk has revolutionized domestic hot water heating with our Artesian
Indirect. Dunkirk's engineers analyzed the weakness of storage tank designs
when developing our Indirect Water Tank. The result is the product we are
pleased to call the ARTESIAN.
1. Greater Performance
Conventional storage tanks pride themselves on the ability to store gallons and
gallons of heated water. What happens in reality is, water sits in the tank at
a set temperature; lets say 120° F, waiting for demand. For every gallon of
hot water that you use, one gallon of cold water is added. The mixing of the
hot and cold water drops the temperature in the tank. The control does not tell
the boiler to come on until the water temperature drops about 7° F. As the
boiler heats up, the domestic water temperature continues to drop and can reach
an uncomfortable level, depending on how much water you are using.
For the domestic water temperature to return to normal you must allow the tank
time to recover. A storage tank may not give your family enough hot water to
run continuously. In other words, you may not have enough hot water for back to
back showers or bathing.
Dunkirk's Artesian stores about 20 gallons of heated boiler water, typically at
180° F. The coils inside the Artesian only hold about 1.5 gallons of
domestic water. When you need hot water (the hot water exits the coil on one
side and the cold water comes in on the other – the two never meet) its
available, instantaneously! Since the boiler water around the coil is at a
higher temperature – the domestic water is heated right away. The 20
gallons of boiler water stored in the tank provides enough heat to keep your
domestic water hot while the boiler heats up.
You can draw domestic hot water continuously, as long as the hot water (from the
boiler) is directed to the Artesian. The continuous flow rate of water produced
by the Artesian depends on the size of your boiler. Consult with your heating
professional regarding your application.
2. Continuous Hot Water Supply
The coil heat exchanger in a storage tank is not large enough to allow the tank
temperature to maintain the desired temperature. The hot water temperature will
not return to the set point temperature for almost fifteen minutes (after you
stop using domestic hot water) – this is called tank recovery time.
The large heat exchanger in the Artesian, overcomes the recovery time limitation
of a storage type tank. By rapidly transferring heat through the Artesian's
coils allow the supply of hot domestic water to continue uninterrupted for as
long as the boiler is delivering hot water.
That is why we say that the Artesian provides "Comfort without
Compromise."
3. Longer life
Oxygen in fresh water is a major cause of premature failure of storage type
tanks by corroding the walls. To slow the corrosion process, competitors use
special linings including glass, cement, or other expensive materials. Over
time, these linings break down, the tank starts to corrode, and leaks appear.
The Artesian tank contains boiler water, which is circulated in a sealed system.
The boiler water contains minimal oxygen because little fresh water is added to
the system if operating properly.
No oxygen > No corrosion > No tank failure
The oxygen rich fresh water is inside of the Artesian's copper coils. Copper
does not corrode like steel, ensuring long life. The copper in the Artesian is
the same material used for the plumbing in your home.
You don't expect the copper pipes in your house to corrode, do you? Have you
ever replaced the copper piping in your house?
Lets face it, domestic water has tons of invisible impurities such as lime,
calcium, minerals and salts. When domestic water sits inside the tank, these
impurities settle to the bottom of the tank. As fresh water is added, more
minerals enter the tank and over time end up on the bottom.
The minerals collect on the finned heat transfer coil within the storage type
indirect tank and reduce its ability to heat domestic hot water. Storage tanks
do not have any way to flush these minerals out of the tank during operation.
Cleaning, if possible, requires a service call or if the problem is extreme,
replacement of the indirect.
Conversely, the Artesian holds only boiler water and carries very little fresh
water in the coils. The domestic water that is carried through the coils, flows
with high velocity. The effect that this has on the coils is continuous
cleaning. The minerals, salts, and other particulate contained in domestic
water is washed away. This greatly increases life expectancy and heat transfer
capability of the Artesian compared to storage type indirect tanks.
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