Eco-Smart ECO MINI 1 User guide

Electric Mini Tank Water Heaters
ECO MINI 1– ECO MINI 2.5 – ECO MINI 4 –
ECO MINI 6

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Installation and Operating Instruction
Manual
Table of Contents
Important Safety Instructions
2
Technical Data
3
General Information
5
Technical Description
6
Installation Instructions
6
Plumbing Connections
7
Temperature & Pressure Relief Valve
7
Filling the Water Heater
9
Electrical Connections
10
Instructions For Use
11
Maintenance Instructions
12
Trouble Shooting
15
Schematic Disassembly & Parts List
16
Warranty
17

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IMPORTANT SAFETY
INSTRUCTIONS
WARNING: When using electrical appliances, safety precautions to reduce
the risk of fire, electric shock or injury to persons should be followed,
including:
1. READ ALL INSTRUCTIONS BEFORE USING THIS WATER
HEATER.
2. This water heater must be grounded. Connect only to properly
grounded power supply. See “GROUNDING INSTRUCTIONS” found on
page 10.
3. Install or locate this water heater only in accordance with the provided
installation instructions.
4. Use this water heater only for its intended use as described in this
manual.
5. Do not use an extension cord set with this water heater. If no
receptacle is available adjacent to the water heater, contact a qualified
electrician to have one properly installed.
6. As with any appliance, close supervision is necessary when used by
children.
7. Do not operate this water heater if it has damaged electrical
connections, if it is not working properly, or if it has been damaged or
dropped.
8. This water heater should be serviced only by qualified service
personnel. Contact nearest authorized service facility for examination,
repair, or adjustment.
SAVE THESE INSTRUCTIONS
The manufacturer and/or distributor is not responsible for damages caused
by improper installation, or by non-observance of the instructions in this
manual.

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A QUALIFIED, LICENSED TECHNICIAN MUST ALWAYS INSTALL THE WATER
HEATER AND CONDUCT ALL SUBSEQUENT SERVICE WORK AND/OR
MAINTENANCE.
IMPORTANT!!!
NEVER TURN THE WATER HEATER POWER ON UNTIL THE TANK IS
COMPLETELY FULL AND WATER IS FLOWING OUT OF THE HOT WATER
FAUCET.
Technical Data
MODEL ECO MINI 1 ECO MINI 2.5 ECO MINI 4
ECO MINI 6
Capacity
1.5 gallons%
2.5 gallons%
4.0 gallons%
6.0 gallons%
Voltage Phases
1440
1440
1440
1440
Power at 120 Vac
110-120
110-120
110-120
110-120
Max Water Pressure
150 psi
150 psi
150 psi
150 psi
Weight (empty)
11.68 lbs
15.48 lbs
19.29 lbs
24.91 lbs
Amperage Amps
12
12
12
12
Phases
1
1
1
1
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Dimensions
Model
ECO MINI
1
ECO MINI
2.5
ECO MINI
4
ECO MINI
6
A (inch)
14.19
15.98
17.41
19.81
B (inch)
9.71
10.89
12.27
13.85
C (inch)
9.95
11.23
12.88
14.36

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Wiring Diagram
ECO MINI 1, ECO MINI 2.5, ECO MINI 4
Wiring Diagram
ECO MINI 6
GENERAL INFORMATION
The Ecosmart Mini Tank water heaters can be used in most under the
counter, point of use applications. ECO MINI models are designed to supply
hot water for all hand wash and kitchen sinks.
ECO MINI models can replace traditional central hot water heaters thereby
conserving water and reducing energy waste.
The Ecosmart Mini tank water heaters are lightweight and compact and
manufactured for easy installation. ECO MINI models are designed to be
mounted on the wall.

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ECO MINI models are designed to operate at 150 psi maximum water
pressure.
CAUTION!: The manufacturer cannot be responsible for the damage caused
by improper installation or by failure to follow instructions in this manual.
Comply with the Installation Instructions before connecting to electrical
supply.
CAUTION!: The thermostat has been pre-set at the factory between 50°F
(10°C) and 140°F (60°C).
CAUTION!: Hydrogen gas can be produced in a hot water system served by
this heater that has not been used for a long period of time (generally 2
weeks or more). Hydrogen gas is extremely flammable. To reduce the risk of
injury under these conditions, it is recommended that the hot water faucet
be opened for several minutes at the nearest and most distant sink being
served by this water heater before using any electrical appliance connected
to the hot water system i.e. Dishwasher. If hydrogen gas is present, there
will probably be an unusual sound such as air escaping through the faucet as
the water begins to flow. There should be no smoking or open flame near
the faucet at this time.
WARNING: Installer should review the contents of this manual with the
owner upon completion of the installation, and the manual should remain
with the owner and placed in a location close to the water heater.

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TECHNICAL DESCRIPTION
There are four Ecosmart Mini tank models, a 1.5 gallon, a 2.5 gallon, a 4
gallon and a 6 gallon model. The pressure vessel (water tank) is welded,
glass lined steel and is equipped with an anode rod.
The water heater is equipped with a thermostat and a high limit temperature
switch. A temperature/pressure relief valve is supplied with the unit.
INSTALLATION INSTRUCTIONS
ECO MINI 1- ECO MINI 2.5 - ECO MINI 4 -
ECO MINI 6
The installation must be completed by a licensed professional. All state and
local codes must be adhered to. The manufacturer will not be liable for any
damages because of failure to comply with these installation instructions or
because of improper installation performed by an unqualified installer.
CHOOSE A LOCATION that allows ease of access for maintenance or
servicing, ideally installed at least 8” to 9” from the ceiling (inside top of
cabinet) or any adjacent walls.
WALL MOUNTING
Fasten the supplied mounting bracket to the wall. Use screws that are
suitable for the wall material and the weight of the water heater filled to
capacity (ECO MINI 1= 25 lbs. - ECO MINI 2.5 = 37 lbs. - ECO MINI 4 = 52
lbs. - ECO MINI 6 = 80 lbs.). Hang the water heater on the bracket and pull
downwards on the water heater to insure that both “fingers” of the bracket
are seated in the mounting slots. Confirm your water piping orientation (hot
and cold) before wall mounting. ONLY INSTALL IN VERTICAL POSITION.%
Heater can sit on the floor. Confirm water piping orientation before finalizing
on floor. ONLY INSTALL IN VERTICAL POSITION! ECO MINI models
can be installed under the sink.

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PLUMBING CONNECTIONS
Connect the cold water inlet pipe to the inlet nipple (marked with a blue
ring) and the hot water outlet pipe to the outlet nipple (marked with a red
ring).
IMPORTANT: If Water pipes are copper or bronze, use dielectric
connections to prevent corrosion. Failure to provide dielectric insulation may
result in premature tank or nipple failure and may void your warranty.
Insure that the water heater is installed in a level position. Install a shut off
valve on the cold water side of the water heater. The valve is for servicing
and the valve should be in the open position when the water heater is in
operation. In order to protect the water heater from heat damage due to
soldering, solder a piece of tubing to a threaded UNION fitting before
screwing the UNION to the tank. DO NOT APPLY HEAT DIRECTLY TO
INLET OR OUTLET CONNECTIONS.
TEMPERATURE AND PRESSURE RELIEF VALVE:
CAUTION!: To reduce the risk of excessive pressures and
temperatures in this water heater, install temperature and pressure
protective equipment required by local codes, but no less than a
combination temperature and pressure relief valve certified as
meeting the requirements for Relief Valves and Automatic Gas
Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22, by a
nationally recognized testing laboratory that maintains periodic
inspection of production of listed equipment or materials. The valve
must be oriented, provided with tubing, or otherwise installed so
that discharge can exit only within 6 inches above, or at any
distance below, the structural floor, and cannot contact any live
electrical part.
Install a discharge pipe from the temperature/pressure relief valve
terminating at a sink or drain. DO NOT CAP OR PLUG THE END OF
THE DISCHARGE PIPE. THE DISCHARGE PIPE MUST BE
UNOBSTRUCTED AND FULL SIZED.
The T/P valve is certified by a nationally recognized test lab that maintains
periodic inspections of the listed equipment and meets the requirements for

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relief valves and automatic shut off devices for hot water supply systems
ANSI Z21.22.
The T/P valve is marked with a maximum pressure, which does not exceed
the maximum working pressure of the water heater (150 PSI).

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Install the T/P valve into the threaded opening at the top of the
water heater and orient the discharge tubing so that any discharge
from the valve will exit within 6 inches above, or at any distance
below the structural floor, and cannot contact any live electrical
part.
T/P Valve Discharge pipe:
1. Must NOT be smaller in diameter than the outlet diameter of
the valve, or have any reducing couplings.
2. Must NOT be plugged or blocked.
3. Must be made of suitable material for hot water.
4. Must not be over 15’ in length.
5. Must not have more than two elbows.
6. Must terminate at an adequate drain.
7. Must not have a shut off valve between relief valve and tank or
relief valve and termination of discharge.
CLOSED SYSTEM THERMAL EXPANSION: Periodic discharge of the
T/P relief valve or failure of the element gasket may be due to
thermal expansion in a closed water supply system. The water utility
supply meter may contain a check valve, backflow preventer or
water pressure reducing valve which will create a closed water
system. During the heating cycle of the water heater, the heated
water expands causing pressure inside the water heater to increase.
The T/P relief valve may discharge hot water under these conditions
which results in a loss of energy and a buildup of lime on the relief
valve seat. To prevent this from happening, there are two
recommendations:
1. Install a diaphragm-type domestic hot water expansion tank
(suitable for potable water) on the cold water supply line. The
expansion tank must have a minimum capacity of 1.5 U.S.
gallons for every 50 gallons of stored water.
2. Install a 125 PSI pressure relief valve in the cold water supply
line. Make sure the discharge of this valve is directed to an
open drain and protected from freezing. Contact your local
water utility or plumbing inspector for information on how to
control this situation. Never plug the outlet of the relief valve.

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FILLING THE WATER HEATER
CAUTION!:%Before connecting the power, fill the tank and system
with water and check for leaks. Be sure ALL AIR IS REMOVED.
To be sure that all air is out of the water system, open the hot water faucets
on your fixtures until constant water flows from them. Otherwise any air
remaining in the tank will cause the water heater element to self-destruct.
Filling the water heater:
1. Open the hot water faucet.
2. Open the cold water supply valve.
3. When continuous water flows out of the faucet, the tank is filled.
4. Close the hot water faucet.
5. Check entire system for leaks.
Using an Aerator (ECO MINI 1model only)
It is highly recommended that an aerator be used together with model ECO
MINI 1. The purpose of the aerator is to restrict the amount of water flow
exiting the ECO MINI 1 which allows the water heater to produce hot water
for a longer duration. If the aerator is not used the 1.5 gallon capacity of the
ECO MINI 1 will be depleted quickly.

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ELECTRICAL CONNECTIONS
To be certain that all of the air is out of the water heater, open the HOT
water faucet on your fixtures until constant water flows from them. If air
remains in the tank, the element will be damaged when connected to power.
Connect the water heater to a GROUNDED POWER SUPPLY.
The water heater is fitted with an electrical connection that is
intended to connect to a grounded 110-120 V/AC supply. Adhere to
all pertinent State and local codes. Install the correct size circuit
breaker into the master panel. The Ecosmart Mini Tank water heater
was manufactured and wired in accordance with UL requirements.
The water heater is equipped with an overheat-limiting device with a
manual reset. Also known as the temperature high limit, this device
has been factory installed to interrupt the power supply in the event
of a thermostat failure.
This water heater is designed for ONLY 110-120V electrical
service!!!!! DO NOT CONNECT TO HIGHER OR LOWER VOLTAGE.
Failure to use proper voltage may result in personal injury and/or property
damage. If the supplied electrical connection is either damaged or not long
enough, do NOT use an extension cord. Have a licensed electrician replace
the power cord.

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INSTRUCTIONS FOR USE
CONGRATULATIONS! You are now ready to use your water heater.
Run the hot water at a nearby sink and evaluate the hot water
temperature. Make any temperature adjustment using the section
below:
SETTING THE THERMOSTAT:
The water heater is equipped with an adjustable thermostat that once set
will automatically control water temperature. The red indicator lamp remains
illuminated while the water is being heated. If the water in the tank is at the
desired temperature the lamp will NOT be illuminated.
The temperature adjusting knob will increase the temperature by turning the
knob clockwise and decrease the water temperature by turning the knob
counter clockwise. Below is an image of the knob.
Temperature adjusting knob
When not being used for a lengthy period of time, you can conserve energy
by reducing the water temperature setting.
SETTING THE FREEZE PROTECTION:
When the water heater is not being used for an extended period of time and
there is a risk of freezing, disconnect power and drain the water heater.

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MAINTENANCE INSTRUCTIONS
Do not attempt to repair this water heater yourself. Call a service
person (plumber or electrician) for service assistance. Always
disconnect power when the water is turned off or when servicing or
draining the water heater.
Before calling for service, first confirm that the water heater is
properly filled and that 110VAC power has not been interrupted.
WARNING: Before servicing or cleaning the water heater, turn off
the POWER switch and disconnect power.
NOTE: For most maintenance operations, the water heater will be
drained. In all cases before draining first turn off the POWER switch
and then disconnect power.
DRAINING AND REMOVING THE WATER HEATER:
1. Disconnect power from the water heater.
2. Open a hot water faucet to let hot water run out. Allow water to flow
until water is no longer hot.
3. Turn off the cold water supply to the water heater.
4. Close the hot water faucet.
5. Disconnect the water heater from both the hot and cold water
connections.
6. If possible siphon out remaining water.
7. Carefully detach the water heater from the wall.
8. Tilt the water heater to drain remaining water out of the heater.
REMOVING THE HEATING ELEMENT:
1. Turn off power supply, disconnect water heater from power and drain
(see above).
2. Remove cover.
3. Remove all the line wires from the heating element.
4. Unscrew the heating element retaining nuts.
5. Remove the element.

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DESCALING THE HEATING ELEMENT:
Scale deposits can affect the heating capability of the element. Heavy scale
can even cause the element to burn out. The element can be descaled
chemically or manually.
1. Remove the heating element (see above).
2. To descale chemically, soak the heating element in white vinegar or
other descaling solution and then rinse well with fresh water.
3. To descale manually, let element dry and then using a non-metallic
brush similar to a tooth brush; brush the residue from the element.
Avoid damaging the surface of the element.
4. Reinstall the element and gasket.
5. Refill tank with water before turning on the power to the water heater.
REPLACING THE HEATING ELEMENT:
1. Disconnect power and drain the water heater (see prior instructions).
2. Remove heating element noting original positions of all connections.
3. Install new element with gasket making sure the new element and
gasket are positioned correctly.
4. Tighten retaining nuts and make the wire connections to their original
locations.
CHANGING THE THERMOSTAT:
1. Turn off the power switch and disconnect the water heater from the
power supply.
2. Drain and remove the water heater. (see page 12)
3. Remove the bottom panel of the water heater.
4. Remove thermostat knob and unscrew two retaining screws. It may be
necessary to pry the knob off of the thermostat spindle. Now remove
front panel.
5. Disconnect the push-pull wire connectors on the thermostat noting
which connector goes to which terminal. Terminals are marked.
6. Remove the thermostat probe from the well.
7. Install new thermostat, attach wires and tighten screws.

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RESETTING THE HIGH LIMIT SWITCH:
For various reasons the high limit safety shut off switch will occasionally shut
the water heater down. This shut down will occur when water temperatures
exceed 190F. Power is automatically turned off to the heating element. The
shut off device may activate as a result of a power outage or an electrical
storm.
NOTE: Do not attempt to reset the high limit switch without first allowing
the water heater to cool down the high temperature water inside the heater.
WARNING: Do not tamper with the reset button to override overheating
shut down.
1. Turn off the power switch and disconnect the water heater from the
power supply.
2. Drain and remove the water heater. (see page 12)
3. Remove the bottom panel of the water heater.
4. Locate the high limit reset button.
5. Depress the small red button in the center of the junction box, replace
the bottom panel and place the water heater back into service.
NOTE: A lower temperature setting saves energy and reduces the risk of
scalding.
CAUTION!: Call a technician if the high limit needs to be reset frequently.

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TROUBLE SHOOTING
PROBLEM: Water does not get hot
1. Make sure the power supply is on and working.
2. If light does not come on, check that the reset button is pushed in;
follow steps from previous section.
3. If the indicator light is illuminated, but water temperature does not get
hot at the sink, test for a plumbing crossover as follows; shut off cold
water supply to water heater and open hot water tap. There should be
no water flowing. Any continuous flow indicates a cross over which will
affect the temperature and will need to be corrected.
4. If there is no crossover, then replace the heating element (see
previous sections).
PROBLEM: Indicator light not on
1. If the light does not come on, but water gets hot, check for faulty bulb.
2. Check reset button; follow steps from previous section.
PROBLEM: Brown water
1. Brown or rusty water indicates a “spent” anode rod. Replace anode rod.
PROBLEM: Odor in water
1. Smelly water could be due to an unusual reaction between local water and
the heater’s anode rod. Check anode rod.
PROBLEM: Water is too hot
1. Turn the temperature knob counter clockwise to a lower temperature
setting. If temperature does not lower within 60 minutes, then replace
thermostat.
PROBLEM: Water is not hot enough
1. Under Instructions for Use, see “Setting the thermostat”.
PROBLEM: Water is leaking
1. Turn off power switch and disconnect water heater from 110 VAC power
supply.
2. Check water fittings and T&P fitting in the top of the tank.
3. Remove cover and inspect heating element gasket.

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Schematic Disassembly ECO MINI 1– ECO MINI 2.5 – ECO MINI 4 – ECO MINI 6
Parts List ECO MINI 1– ECO MINI 2.5 – ECO MINI 4 – ECO MINI 6