Eco-Smart ECO 21 User manual

INSTALLATIONINSTRUCTIONS
ECOSMART ELECTRIC TANKLESS WATER HEATER MODELS:
ECO-21 / ECO-24 / ECO-27
The most technologically advanced tankless hot water heater in today's market.
99.8% Energy-efficient
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“No Tank, No Wait, No Comparison”

IMPORTANT SAFETY INFORMATION
As when installing or operating any high voltage electrical appliance,
basic safety precautions must always be followed.
ALWAYS shut off all power to the Ecosmart unit directly at the electrical
breaker box before attempting to clean, install, inspect, repair,
disassemble, or otherwise service this unit.
SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF
SAFETY PRECAUTIONS ARE NOT FOLLOWED. THIS PRODUCT MUST BE
PROFESSIONALLY INSTALLED BEFORE USE.
FAILURE TO DO SO COULD CAUSE PROPERTY DAMAGE,
SERIOUS PERSONAL INJURY OR DEATH, AND WILL VOID THE WARRANTY.
THIS WATER HEATER MUST BE INSTALLED BY A
LICENSED ELECTRICIAN AND PLUMBER.
PROOF OF INSTALLATION MUST ACCOMPANY
THE WARRANTY REGISTRATION CARD.
PLEASE FOLLOW ALL RECOMMENDATIONS AND LOCAL CODE AND PERMIT REQUIREMENTS.
TURN OFF ELECTRICAL SUPPLY MAIN AND WATER SUPPLY BEFORE
ATTEMPTING INSTALLATION OR SERVICING THE UNIT.
DO NOT TURN ON ELECTRICAL SUPPLY OR WATER SUPPLY UNTIL
INSTALLATION IS PROPERLY COMPLETED.
FAILURE TO FOLLOW PROPER PROCEDURES IS HAZARDOUS.
IT MAY ALSO DAMAGE THE WATER HEATER AND WILL VOID THE WARRANTY.
●DO NOT remove the heater cover, open the unit, or break the seal. This could cause DEATH OR INJURY and will VOID
THE WARRANTY.
●DO NOT install the electric tankless water heater unit in a shower or in any location where it might come into contact
with water or where it can be reached or adjusted by anyone while using water.
●DO NOT attempt to install yourself. Although installation is simple, it should only be done by a licensed plumber or
electrician.
●DO NOT operate the unit if water ceases to flow during use. Discontinue use and contact technical support at:
WWW.ECOSMARTUS.COM
phone: [phone] or 877-47-GOGREEN
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PART IDENTIFICATION

THIS PRODUCT IS DESIGNED TO BE INSTALLED INDOORS ONLY.
THE FOLLOWING SHOULD BE CONSIDERED WHEN SELECTING A LOCATION IN WHICH TO INSTALL THE HEATER:
●The existing plumbing configuration. It is preferable to mount the unit in a location which will not
require major plumbing alterations.
●The location of the main electrical panel. Mounting the unit in close proximity to the main electrical panel
will reduce the quantity of wire needed for installation.
●Locations of the kitchen, bathrooms, and laundry area. Ideally the water heater should be installed near
the hot water applications (such as faucets or showers) which are used the most frequently. This will
allow for the most rapid delivery of hot water on demand.
●Ease of access to the unit for service. Do not install the water heater in a location which is difficult to
access for maintenance or to adjust the thermostat setting. Typically, the tankless hot water heater will
be mounted near the location of the previous tank hot water heater. This product does not require
venting.
SAFETY PRECAUTIONS FOR SELECTING AN INSTALLATION SITE:
●DO NOT install the unit where it may come into contact with combustible materials. A minimum of 24
inches clearance must be maintained between combustible materials and the hot water heater and the
outlet hot water pipe.
●DO install the unit out of the reach of children to avoid injury or tampering with the water temperature
setting. The hot water outlet pipe can become very hot and should not be touched.
●DO NOT install the unit in a location where it might come into contact with water, excess dust, high
humidity, or any other form of moisture. Do not install the unit under water pipes or air conditioning
lines, as they may leak or drip condensation onto the water heater.
●DO NOT install the water heater above electrical boxes or junctions.
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SELECTING A LOCATION FOR INSTALLATION

YOU MAY BE ABLE TO INSTALL THE WATER HEATER IN AN OUTDOOR LOCATION ONLY IF THE FOLLOWING
CONDITIONS ARE MET:
●The heater is mounted in a suitable enclosure that protects it from rain, splashed water, direct sunlight,
debris, and insects.
●DO NOT install the unit in a location where it may be subjected to freezing temperatures. If water inside
the unit freezes, it can cause permanent damage to the heater which is not covered under warranty. If
you ever suspect that water may have frozen inside your water heater, allow it to thaw and check the
system for leaks before turning it on. Contact Ecosmart technical support for instructions.
SPECIAL INSTRUCTIONS FOR INSTALLATION ON A SECOND FLOOR OR IN A HEATED ATTIC:
●Always follow all local codes in your area for installing a water heater in these locations.
●Install a drip pan connected to a safe drain below the water heater to avoid property damage in the
unlikely event of a leak.
●Alternatively, an active water leak detector and shut off valve may be installed which will automatically
turn off the water supply in the unlikely event that a leak is detected. Ecosmart recommends the
FloodStopper by First Smart Sensor Corp. - www.a-leak-detector.com.
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●Select a mounting location which is solid and secure.
●Install the water heater in an upright position with the inlet and outlet water connections at bottom of the
unit. Ensure unit is level prior to securing the screws.
●The water heater should be mounted using a total of 4 screws through the built-in mounting brackets on
each side of the unit. Minimum screw length is 1 inch long.
●Recommended clearances: 12” above and below the unit, 6” on each side, and 6” to front panel.
A MINIMUM OF 24 INCHES CLEARANCE MUST BE MAINTAINED BETWEEN COMBUSTIBLE
MATERIALS AND THE HOT WATER HEATER AND THE OUTLET HOT WATER PIPE.
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MOUNTING INSTRUCTIONS

THE WATER HEATER MUST BE INSTALLED BY A LICENSED PLUMBER IN ACCORDANCE WITH ALL
NATIONAL, STATE, LOCAL, AND/OR PROVINCIAL PLUMBING CODES.
GENERAL PLUMBING GUIDELINES:
●The Ecosmart electric tankless water heater is supplied with 1/2” compression fittings.Do not
weld, use paste, or Teflon on fittings. Use of solder on the water inlet or outlet connections
can damage the flow sensor and will void the warranty.
●When connecting the inlet water hose to the unit, use one wrench to hold the unit's connection
and a second wrench to tighten the hose. This will avoid potentially loosening or damaging the
flow sensor. Over-tightening inlet connections can cause serious damage to the water heater
which is not covered under warranty.
●Use of water heater flex hoses is recommended for ease of installation. It is recommended that
copper pipe be used within 3 feet of the inlet and outlet hoses. Other forms of plastic tubing
may also be acceptable as long as it is rated for high temperature applications.
●Use of a temperature pressure relief valve (T&P) is not required for most installations because
this water heater is tankless and does not store water. However, the valve is recommended
when connecting to flex or high temperature CPVC pipes for added safety. If a T&P valve is
used, it should be connected to a drain. Before installing the water heater, ensure that the
valve is operating correctly and that the air has been purged from the valve. Local code may
also require the use of a T&P valve – check your local requirements and follow them
accordingly. All installations in the Commonwealth of Massachusetts and the State of Kentucky
require the use of a pressure relief valve.
●The maximum recommended water pressure for this product is 100 PSI. In homes where water
pressure is higher, it is recommended that a pressure reduction valve be installed on the main
incoming water supply line prior to installing the water heater.
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PLUMBING

PLUMBING INSTALLATION INSTRUCTIONS:
1. Connect the cold water supply line to the right side of the unit (cold water inlet). It is
recommended that a manual shut off valve (ball valve) be installed at the cold water inlet so
that a convenient water shut off point is available for future maintenance.
2. Connect the hot water supply line to the left side of the unit (hot water inlet).
3. Before connecting pipes to the water hoses, it is extremely important to FLUSH the lines to
eliminate any plumbing paste or residue in the lines. Flex water heater hoses are
recommended for ease of installation.
4. After both water lines are fastened securely, run water through the unit for at least 2 to 3
minutes to flush out any air pockets in the lines (PURGING). It is recommended that all faucets,
showers, etc. be run during this process. Failure to purge the lines of air can cause permanent
damage to the unit. This procedure MUST be performed before the electrical power is turned
on. Repeat the procedure after any maintenance to the water heater or home's plumbing
system is performed that may introduce air into the pipes.
5. Carefully inspect all connections, unions, and the pressure relief valve (if used) for leaks.
6. Install the water pan if needed (see special instructions for installation on a second floor or in
a heated attic on page 5)
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PLEASE READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY BEFORE
INSTALLATION AND USE OF THE PRODUCT. FAILURE TO DO SO COULD CAUSE PROPERTY
DAMAGE, SERIOUS PERSONAL INJURY OR DEATH, AND WILL VOID THE WARRANTY.
THE WATER HEATER MUST BE INSTALLED BY A LICENSED ELECTRICIAN IN ACCORDANCE WITH ALL
NATIONAL, STATE, LOCAL, AND/OR PROVINCIAL ELECTRICAL CODES.
●DO NOT ATTEMPT TO INSTALL, REPAIR, OR DISASSEMBLE THIS WATER HEATER OR
ANY ELECTRICAL APPLIANCE WITHOUT FIRST SHUTTING OFF ALL POWER TO THE
UNIT DIRECTLY AT THE FUSE OR BREAKER BOX. SERIOUS BODILY INJURY OR DEATH
COULD OCCUR IF THIS WARNING IS NOT HEEDED.
●The Ecosmart electric tankless water heater unit must be installed to independent
double pole breakers as per model specifications below.
●Each Ecosmart model comes supplied with the required wires for installation.
●Breaker size and wire gauge must meet all applicable local, state, provincial, and
national electrical codes for your area – these are only guidelines that will apply to
most installations. In the United States, wires and circuit protection (breakers) must
comply with the U.S. National Electric Code (NEC) and in Canada with the Canadian
National Electric Code (CEC). Please note that the CEC generally requires that all
supply wires and breakers used for domestic hot water heating and hydronic
heating applications be sized to a minimum of 125% of the maximum current rating
of the water heater (see model specifications below for details).
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ELECTRICAL CONNECTION

●Some codes require use of electrical sub-panel for installation, especially when
heater is not mounted within line-of-sight of the main electrical panel. Wiring
should be sized to maintain a voltage drop of less than 3% under load.
●If your home is already equipped with a large number of electrical appliances, you
may require a larger electrical service than the one recommended. Before
installation, ensure that the home has sufficient electrical power available to handle
the maximum amperage load of the model.
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ELECTRICAL SPECIFICATIONS BY MODEL #
VERIFY ALL VOLTAGE & AMPERAGE INFORMATION LISTED BELOW WITH THE ACTUAL LABEL
SPECIFICIATIONS ON YOUR UNIT, IN CASE OF CHANGES OR VARIATIONS.
MODELS ECO-16 ECO-18 ECO-21 ECO-24 ECO-27
ELEMENTS 22333
EACH SUPPLY 8KW 9KW 7KW 8KW 9KW
VOLTAGE 240V 240V 240V 240V 240V
MAX. KW 16KW 18KW 21KW 24KW 27KW
WATTS 16000 18000 21000 24000 27000
MAX. AMP
DRAW 66.6 AMPS 75 AMPS 87.5 AMPS 100 AMPS 112.5 AMPS
RECOMMENDED
HOUSEHOLD
ELECTRICAL 150 AMPS 150 AMPS 200 AMPS 200 AMPS 200 AMPS
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MODELS ECO-16 ECO-18 ECO-21 ECO-24 ECO-27
SERVICE
WIRE GAUGE AND BREAKER SIZE CAN VARY BASED ON A NUMBER OF FACTORS,
INCLUDING SUPPLIED VOLTAGE AND LENGTH OF CIRCUIT.
CHECK LOCAL REQUIREMENTS.
MODELS ECO-16 ECO-18 ECO-21 ECO-24 ECO-27
QUANTITY 2 2 3 3 3
AMPERAGE 40 40 40 40 40
BREAKER
TYPE DOUBLE POLE DOUBLE POLE DOUBLE POLE DOUBLE POLE DOUBLE POLE
WIRE GAUGE 2 x #8 AWG
COPPER 2 x #8 AWG COPPER 3 x #8AWG COPPER 3 x #8AWG COPPER 3 x #8 AWG COPPER
ELECTRICAL INSTALLATION INSTRUCTIONS:
MODELS ECO-16 AND ECO-18 REQUIRE 2SETS OF WIRES AND 1 GROUND (SEE WIRING DIAGRAM BELOW)
MODELS ECO-21 / ECO-24 / ECO-27 REQUIRE 3SETS OF WIRES AND 1 GROUND (SEE WIRING DIAGRAM BELOW)
1. Always use the specified wire gauge and conform to all applicable electrical codes for size
of breakers used.
2. Run 2 sets of wires (Models ECO-16 and ECO-18) from the main breaker panel to the
tankless water heater. For units ECO-21 / ECO-24 / ECO-27, run 3sets of wires.
3. Take each wire pair (1 red and 1 black wire per pair) and connect it to 1 breaker as shown
in wiring diagram below.
4. A separate ground conductor is required for each incoming circuit.
5. Be certain that the correct connections have been made following the wiring diagram for
the model # of your water heater. If a set of wires is crossed, the unit will not operate
properly, even though it may turn on and appear to function.
6. Double check all electrical connections and wires to make sure that they are tight and
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secure. Confirm that the correct wire gauge was used, and that the ground connections
were made in accordance with all applicable codes.
7. Before turning the power on, the system must be flushed as required in the plumbing
instructions.
8. When the unit is powered up the green LED indicator light will turn ON and then OFF. This
is normal. The tankless hot water heater is now ready to use!
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POWER KNOB:
•Click the power knob once to turn the unit ON.
•Click the power knob again to turn the unit OFF.
ºC/ ºF CONVERSION:
•Press the knob for 3 seconds to change the display from
ºC/ ºF.
TEMPERATURE CONTROLLER KNOB:
•Turn the knob clockwise to increase the temperature set on the thermostat.
•This will increase the water outlet temperature.
•Turn the knob counterclockwise to decrease the temperature set on the thermostat.
•This will decrease the water outlet temperature.
•The water temperature can be adjusted at any time to between 0º-125ºF ( 0º-51ºC).
•The temperature indicator light will stay on only when there is hot water in use.
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HOW TO USE THE KNOB

ECOSMART US LLC
3315 NW 167th Street
Miami Gardens, FL 33056
www.ecosmartus.com
Telephone: [phone]
Fax: [phone]
Toll Free: 877-47-GOGREEN
Congratulations on the purchase of your Tankless Water Heater! You have purchased the most
technologically-advanced tankless water heater in the market today. Your ECOSMART Tankless Water
Heater is backed by the industry’s most comprehensive warranty.
Your new tankless water heater features advanced water flow rate and temperature sensors designed
to modulate power to the heating elements to maintain a precise user-selected output water
temperature between 85F and 140F (subject to incoming water temperature and power of the selected
model). To get the best performance and energy savings from your tankless water heater, it is
important that it be installed in accordance with our instructions and the electrical and plumbing
codes applicable to your area, and that you read this manual thoroughly for important operating
instructions and tips.
At any time, if you have any questions, please contact your Authorized Dealer, or contact us directly
at:
ECOSMART US, L.L.C.
3315 NW 167TH
STREET, MIAMI GARDENS, FLORIDA 33056
Toll Free: 1-877-474-6473
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ABOUT YOUR TANKLESS WATER HEATER

For the most part, operating your new tankless water heater is very similar to using any traditional
water heating system. However, it is very important that you carefully read all of the set-up
procedures and operating instructions and tips to ensure the maximum performance and energy
savings from your new water heater. We recommend that all members of the household read these
General Operating Instructions.
How your new water heater works: Your Tankless Water Heater does not store hot water like a
conventional tank-type water heater. It contains very high powered heating elements that are capable
of heating water instantly on-demand as you need it. As soon as you turn on a hot water faucet, a
sophisticated flow sensor recognizes that you have turned on the water. This sensor measures the
water flow rate while another sensor measures the incoming water temperature. This information is
transmitted continually to the computer logic controls which decide how much power to send to the
heating elements to heat the water to your desired temperature.
Since your new water heater works on a demand basis, it will absolutely never run out of hot water no
matter how many back to back showers you run!
It is important to keep in mind that all tankless water heaters are subject to a maximum flow rate that
they can handle all at once. If you exceed this flow rate, the heater will not be capable of fully heating
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GENERAL OPERATING INSTRUCTIONS

the water. How much water you will be able to demand from your water heater at any given time will
depend on the model you have selected and your incoming water temperature. If you live in an area
of the country where inlet water temperatures average 55º F or you have cold winters, you will
probably NOT be able to run multiple large water demands at the same time, however, you will be
able to run all your hot water applications back to back without ever having to wait. You will enjoy
UNLIMITED HOT WATER. SEE CHART ON NEXT PAGE.
Moreover, since a tankless water heater eliminates the ongoing thermal losses caused by storing hot
water in a tank, you will enjoy significant energy savings over a conventional water heater. When you
use hot water in your home with a conventional water heater, you need to mix a considerable volume
of cold water to cool the hot water down to a safe, comfortable level for showering and bathing, etc.
You need to do this with a traditional tank-type water heater because they are set at extremely high
temperature setting to prevent them from running out of hot water quickly. With our tankless water
heater, you will generally set the temperature at a much lower level since it is capable of heating your
water on demand. This level will be much closer to the actual temperature at which you feel
comfortable showering or bathing. Accordingly, when you use your faucet controls to run a shower or
bath, you will no longer have to mix as much cold water, in fact, you may mix very little or no cold
water. This is perfectly normal and means that you are no longer wasting energy and water by
overheating your water.
MAXIMUM FLOW RATES IN GALLONS PER MINUTE AT 105F OUTLET TEMPERATURE
(based on 240V input power)
Incoming
water
temperature Model Eco 16 Model Eco 18 Model Eco 21 Model Eco 24 Model Eco 27
40F 1.7 1.9 2.2 2.5 2.8
45F 1.8 2 2.4 2.7 3.1
50F 1.9 2.2 2.6 3 3.3
55F 2.2 2.4 2.9 3.3 3.7
60F 2.4 2.7 3.2 3.6 4.1
65F 2.7 3.1 3.6 4.1 4.6
70F 3.1 3.5 4.1 4.7 5.2
75F 3.6 4.1 4.8 5.4 6.1
80F 4.4 4.9 5.7 6.5 7.3
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SETTING THE OUTLET WATER TEMPERATURE:
The user controls on your new tankless water heater are very easy to operate. The digital display will
show your current set water temperature at all times that the water heater is running.
To set the temperature, start by turning on any water faucet. The digital display will light up and give
you the current temperature setting of the unit. To increase this setting, turn the control knob to
“Increase.” or “Decrease.” your temperature setting. You can set the temperature at any level between
80F (27C) and 140F (60C). To change the digital display from Fahrenheit to Celsius, simply press the
control knob for 3 seconds.
Most people feel comfortable showering or bathing at a temperature between 98 and 105F (37 to
41C). We recommend that you set the output water temperature of your water heater at either 105 or
110F (approx .41 - 43 C). This will ensure you have adequate hot water to meet all of your household
needs while also maximizing your available water flow rate, reducing the risk of scalding to children
and the elderly, and increasing the energy savings you achieve.
Note: All newer model dish washing machines are normally equipped with an internal heating
element, and most clothes washing detergents are now designed for use in cold or warm water. There
is no longer a need set your water heater to a temperature above 125F. Temperatures above this level
(which most traditional water heaters are set to deliver) can cause serious scalding injuries to small
children or elderly persons in your home.
If you ever detect a water leak from your water heater, turn off the water supply at the shut-off valve
on the inlet side of the water heater, turn off the power to the heater and call us for technical
assistance.
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Your new electric tankless water heater requires no maintenance. However, to ensure maximum
performance of your water heater and to reduce the risk of a water leak, we do recommend the
following maintenance:
You should inspect the CONNECTIONS on the inlet and outlet of the water heater at least on an annual
basis for any signs of damage or failure. Any signs of damage, cracks, leakage or weakness should be
replaced. Take care not to over-tighten the connections. Serious internal damage to your water heater
can occur if you over-tighten the water heater connections at the unit.
IMPORTANT NOTES:
As with all electrical appliances, under no circumstances should you attempt to install, repair or
disassemble this water heater without first shutting off all power to the unit directly at the fuse or
breaker box. SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
When any maintenance is performed on the water heater or the home’s plumbing system that may
introduce air into the plumbing pipes, it is important to turn the power off to the water heater and
purge the air out of the lines before allowing the unit to power up. FAILURE TO DO SO COULD CAUSE
PERMANENT DAMAGE TO THE HEATING ELEMENTS.
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MAINTENANCE

If you have a water supply with a high level of mineralization (hard water), you should increase the
frequency of your maintenance.
Are you having problems with your water heater?
Do not return your heater to your Authorized Dealer. Please call our customer service dept.
TOLL FREE 877-474-6473
or call your Authorized Dealer for assistance.
All units are thoroughly tested before they leave our factory. In rare instances, your unit could arrive
with internal or external damage that may affect its performance. All units are factory tested as
follows:
PRESSURE INTEGRITY TEST
Each unit is pressure tested at 180 PSI to insure against leaks. This is over 3.5 times the water
pressure that the unit will experience in a typical residential installation.
ELECTRICAL INTEGRITY TEST
Each unit is tested to verify that there are no short circuits and that the unit’s circuitry is properly
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TROUBLESHOOTING GUIDE