TechnicalSpecifications
PAGE-07
Instruction Manual
ECO90
9.0kW
1x40 AMP
37.5 A
1x8 AWG
16" x11.2" x3.3"
14Ibs
1.0 GPM 61 F
1.2 GPM 51 F
1.4 GPM
44 F
1.6 GPM 38 F
1.8 GPM 34 F
1. The installation must be installed professionally ,in compliance with the National
Electrical Code, your local electrical and plumbing codes.
2. All wiring and installation must be supervised by a qualified electrician.
3. CAUTION: This product has more than one power-supply connection point.
Under no circumstances should you attempt to install, inspect, clean, repair,
disassemble, or other service this water heater, without first shutting off all
power to the unit dircetly at the circuit breaker box. SERIOUS INJURY OR
DEATH COULD OCCUR IF YOU IGNORE THIE WARNING.
4. This appliance MUST be permanently connected to the fixed double pole circuit
breaker and it must be installed vertically. DO NOT install this appliance near
tinder or a strong magnetic field place.
5. This appliance must be EARTHED.
6. This appliance is forbidden to be switched on if you think it might be frozen,
as this could result in serious damage to the unit. Wait until you are sure that
it has completely thawed out before you switch it on.
7. Please feel the outgoing hot water temperature with your hands to make sure
it is suitable for shower. As a result, you will avoid getting scalded.
8. DO NOT install this hot water unit in a location where it may be subjected to
freezing temperatures.IF YOU IGNORE THIS WARNING, THE UNIT MAY GET
PERMANENT DAMAGE DUE TO IT FREEZES INSIDE.
9. If there is damage to the wire, you must contact a qualified electrician to
replace it with specific wire.
10. CAUTION: FOR HOUSEHOLDAND INDOOR USE ONLY
11. CAUTION: Risk of electric shock, CONNECT ONLY TO A CIRCUIT THAT
ISPROTECTED BY A GROUND-FAULT CIRCUIT INTERRUPTER(GFCI).
12.If the hot water unit has been paused during use, you may initially get a short
burst of very hot water when you turn it on again. Please run water through for
a few seconds to settle down water temperature.Check water tempt with hand
before shower again with it.
PAGE-04
Instruction Manual
ImportantSafetyInformation
ProductInnerStructure
PAGE-06
Led Display
Front Cover
Cable Entry With Seal
Control Key
Cold Water Inlet
Hot Water outlet
Mounting Bracket
Relay
Transformer
Connection Plug to Display
Triac
Terminal Block
Water Flow Meter
Thermostat
(Manual Reset)
Heating Element
TEMP Sensor
Fig.1
Instruction Manual
E L2 L1
1.Fix the mounting bracket on the back of machine with locking screws 1 2 3 4.(fig.2a)
2.Remove screws A B C D which are fixed at the front and back covers of the machine.(fig.2b)
3.Be careful remove the front cover and disconnect display wiring plug,Rough handling is to be
avoided.(fig.2c)
4.Mark mounting holes on the wall,then drill holes of 6.0mm diameter.Put expansion bolts
into holes , and then screw the self tapping screws into the expansion bolts.Fix the
machine on the mounting screws.(fig.2d)
5.Run a set of 8AWG/2 wires to the terminal blocks, and please notice the guidance marking
below the terminal blocks.(fig.3a&3b.) 2 hot lines and 1Grounding wire for 240V power supply.
6.Reconnect the display back to circuit board via the wiring plug, and then fix the front
and bottom case with locking screws A B C D.(fig.3c)
7.Connect the water pipe to the water inlet and water outlet connections, please remember
to use the rubber seal ring.(fig.3a)
8.Descaler device and manual shut-off valve(ball valve) are recommended to install in cold
water line in so as to get best performance and convenient future maintanence.
Installation Steps:
PAGE-08
InstallationInstructions
Instruction Manual
Installation Guideline:
1.This product is designed to be installed indoors only. You may install your unit in an outdoor
location so long as it is mounted in a suitable enclosure that protects it from rain, splashed
water, freezing temperature, direct sunlight, debris and insects.
2.DO NOT install this product in a location where it may be subjected to freezing temperatures.
If the water inside your tankless water heater freezes, it can cause severe and permanent
damage that is not covered under your warranty.
3.DO NOT locate the water heater in a location that is difficult to access.
4.Make sure that the water heater and hot water outlet pipe are out of reach of children so they
are unable to tamper with the temperature controls or injure themselves by touching the hot
water outlet pipe. The outlet water pipe can get very hot.
5.Avoid installing your tankless water heater in a location prone to excessive humidity, moisture
or dust, or in an area where it may be splashed with water or other liquids.
6.DO NOT install under water pipes or air conditioning lines that might leak or condense
moisture that could then drip onto the heater.
7.DO NOT install above electrical boxes or junctions.
CAUTION: The water heater should not be located in an area where leakage will result in
damage to the area adjacent to it or to lower floors of the structure. Where such areas cannot
be avoided, it is recommended that a suitable catch pan, adequately drained, be installed
under the water heater.
The installation must be in compliance with the National Electrical Code, your local electrical
and plumbing codes.
1. Make sure the appliance is intact, and the fittings are complete.
2. Make sure the main power supply, water pressure, grounding condition ammeter
and wire reach the standard of installation requirement.
3. The appliance must be connected to properly grounded dedicated branch circuits of proper
voltage rating. Ground must be brought to the"ground bar"at the circuit breaker.
4. This appliance MUST be permanently connected to the fixed circuit breaker. If you do not
use the heater, please switch off the circuit breaker.
5. DO NOT install this appliance near tinder or a strong magnetic field place. The unit must
only be assembled in a VERTICAL position near by the water fittings.
Please test the unit after getting the water flow.
PAGE-12
3b
3a
Instruction Manual
E L2 L1
E L2 L1
240V
L1 L2 E
Water
Outlet
Water
Inlet
Display port
GroundBar
CircuitBreakerBox
HotWaterUnit
Meshfilter
The use of a plug and socket is forbidden
3c
ScrewA
ScrewC
ScrewB
ScrewD
Fix back the screws A B C D.
40A double
pole breaker
This product must not be disposed together with the domestic waste.
This product has to be disposed at authoriszed place for recycling of
electrical and electronic appliances.
By collecting and recycling waste,you help save natural resources,
and make sure the product is disposed in
an enviromnental friendly and healthy way.
Remarks:Thespecificationsmaybechangewithoutpriornotice.
Allfeaturesandspecificationsareallgivenbymanufacturer.
Note: Do not attempt to repair this water heater yourself if the unit is not working properly. Call
a technician for assistance. The power supply always needs to be shut off before these operations
are carried out .
To ensure consistent Maximum performance of the unit, it is recommended to follow these instructions:
1.Periodically remove scales and dirt that may build up at the aerator of the faucet or
in the shower head.
2. There is a built-in filter at the inlet connection which should be cleaned from time to time. Please cut the
water supply before doing this.And you can reverse inlet and outlet pipe connections,open faucet to
Max.to flush the filter.Remember to reverse back after you get it done.
Open water source and allow water to run though the water heater for at least 2 to 3 minutes.
This will purge the air out of the unit and must be performed prior to turning on the power at
the unit. Failure to Do So will Cause Serious Damage to Heating Elements.
IMPORTANTWARNING:
OperatingInstructions
Important Note
1.Any maintenance performed on the water heater unit may introduce air into pumbing pipes, it is
important to purge all the air out before power on again.Failure to do so could cause serious damage
to the heating element.
2.If you have a water supply with high level of mineralization(hard water),you should increase the
frequency of your maintenance.Check the declear device regularly to see if it is functional.
3.Donotuse thinner,alcohol,petrol,or anyother organic solutions to clean the set,use only a damp cloth
with mild detergent.
1. Open the water faucet for 3 minutes until the water flow is continuous and all the air has been
purged from the water pipes.
2. Turn on the circuit breaker to supply electrical power to the unit.
3. After the unit is supplied with power, a beep sound can be heard and LED lights up and stays; if there
is no other display, the appliance keeps standby.
4. Press Power button on the unit to turn ON/OFF the appliance. When the unit is working, LED lights
show “Actual Temp” , “Set Temp” ,“Work voltage”,“Water flow” and “Power”. When we turn off the water
supply or not enough water pressure, only the “Actual Temp” and “Set Temp” is displayed.
5. Press and to adjust the outlet water temperature, Temperature setting range is 77-131℉ / 25-55℃.△ ▽
If the unit has been paused, you may initially get a short burst of very hot water when you turn
it on again. Please run the water through for a few seconds to let the temperature settle down.
Please check the hot water with your hand before taking a shower.
6. Press to change the temperature display between Fahrenheit and Celsius degree.
7. There is an automatic memory function to avoid repetitive operation. When you turn on the appliance,
the default setting temperature will be the same as last time setting.
If the unit is not used in winter drain out the water completely so that the heater does not freeze.
Please clean the inlet filter and the shower periodically in order to keep a proper water flow.
NormalMaintenance
Instruction Manual
。
。
PAGE-13
Instruction Manual
Productwarranty
PAGE-16
1)Mounting
Plot the holes for the mounting screws onto the wall. Mount vertically on a flat surface
(i.e. board or wall)larger than the unit itself. Make sure heater is secure by utilizing a
stud or the provided wall anchors. Keep away from any potential slashing or leaking
water and strong magnetic fields.
2) Water Connections
Plumbing connections are 1/2"NPT, and both the inlet and outlet can be found at the bottom
of the unit. When installing your water connections make sure to use 1/2"NPT fittings.
Please use the provided gaskets to prevent leaks. When tightening fittings, use a
wrench on inlet and outlet fittings. The cold water inlet is on the right side it should be
preceded by a high pressure discharge valve and a shut off valve (ball valve)in that order.
For the best service and lifespan of the hot water unit, it is advised that a descaler
device should be installed inline to the supply line (cold) to avoid any potential
damage due to scale build-up.
The hot water outlet is on the left side and runs to your hot water source.
NEVER USE PVC ON HOT WATER OUTLET. Use instead CPVC or other high temperature
rated materials. Run water through the heater for a few minutes to purge all air from
the system. Shut off flow at faucet to pressurize system. At this point check for and
fix any leaks. If no leaks are present move to next step.
3)Electrical Connections
Power wires and Grounding come into the unit from the bottom right hand side of the unit.
Use 8 AWG/2 wires with grounding wire, running from the"E"space in the terminal
block all the way to the ground bar of the breaker panel. Run one 8 AWG wire from each
of the"L1" and "L2" connection points of the terminal block to the double pull 40amp
breaker at your circuit panel.
4)Operation
After power is supplied a beep can be heard and display lights up. First open the water
to purge all the air inside the unit,and then press power button on the unit to turn on，
Set Temp, and the temperature can be set between 77-131°F / 25-55°F . Set desired temp
with the up and down arrows.Test water before use to avoid scalds.
Attention: This unit requires a 40A double pole breaker. For more information
please consult a certified electrician in your area.
PAGE-05
QuickStartGuide
Instruction Manual
PAGE-10
1. All water pipes must comply with national and applicable state and
local water pipe codes.
2. The unit should be connected directly to the main water supply.
Flush the pipe with water to remove any debris or loose particles before
pipe connections,so as to avoid clogging.
3. It is required to use 1/2"NPT water connections to fit the models on ECO90.
4. Flexible water hose are recommended to use with your hot water heater as
part of installation,it makes future maintanence more convenient.Please
remember to install rubber seal rings at the connections. When all water
connections are completed, check for leaks and take the necessary actions
before proceeding.
5.Install a shut off valve(Not Supplied ) and descaler device(Not Supplied ) to prevent
any particles entering the unit that may clog or damage the internal parts.
6.When you do pipe connection to the unit, use a wrench to hold connection of the
unit and use another wrench to tighten flexible water hose to the hot water unit.
Over tighten must be avoided.
1. All electrical work must comply with national and applicable state and
local electrical codes.
2. This water heater must be permanently connected to the direct main breaker panel.
The use of a plug and socket is forbidden.
3.The unit must be connected to a properly grounded dedicated branch circuit
of proper voltage rating.
4. The ECO90 hot water unit needs 40AMP double pole breaker, a set of 8AWG/2
wires with Grounding wire for 240V proper power supply.
5. Before beginning any work on the electric connections, make sure that the main
breaker panel switch is OFF to avoid any danger of electric shock.
6.All mounting and plumbing must be completed before proceeding
with electrical hook-up.
7. While connecting the wires to the terminal blocks, please make sure the metal
wire ends and the terminal blocks touch completely. Then tighten the screws to
make sure the full current can go through.
8. Connectthewires toTerminalBlockandfullytightenthemasfollow(fig.3b)
WaterConnections
ElectricalConnections
Red
Grounding wire
Instruction Manual
PAGE-11
Instruction Manual
2a
2c
2d
Screw3
Screw1
Screw4
Screw2
Fix the bracket and machine with locking
screws 1 2 3 4.
2b
Display connecting plug
Be careful when remove the PCB row line
Rough handling is to be avoided.
ScrewA
ScrewC
ScrewB
ScrewD
Remove screws A B C D.
InstallationDiagram
E L2 L1
Screw the self tapping screws into the expansion
bolts.Hang the machine on the mounting screws.
WallPlugWallPlug
WallPlugWallPlug
ScrewScrew
ScrewScrew
PAGE-15
Instruction Manual
AfterSalesService
Productpackinglist
3
Mounting brackets
water heater
Instruction Manual
ElectricTanklessWaterHeater
Model:ECO90
Thanks for your trust in ECOTOUCH and congratulations on your choice,it is one of best
tankless water heater available on the market today.
To enjoy the best performance of this unit,please read these instrcutions thoroughly and
completely prior to installation and use.Failure to do so may cause property damage,
serious injury or death.
Please keep this manual with you after installation, you may need it for future reference
and technical information.
PAGE-02
Instruction Manual
CustomerService
At ECOTOUCH,we think highly of product quality, excellent performance, pleasant
experience of valued customers, if you get any question the unit or anything
unexpected occurs,please feel free to contact us at ecotouching@outlook.com,
we will try best to serve and help.
We also strive for continuous improvement, so your comnents, feedback and
suggestions are highly welcome.
customer service
ecotouching@outlook.com
Other optimal products from ECOTOUCH:
5.5kW Tankless
Water Heater
Induction Cooktop 4hobsInduction Cooktop 2hobs
Thanks for your trust in ECOTOUCH, you may get more information about those
units on Amazon,and if you need one please let us know, special discount of 10%
off will be offered to show our gratitude for your great support.
PAGE-03
Instruction Manual
ImportantSafetyInformation
DANGER!
WATER TEMPERATURE SAFETY SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of water heater’s thermostat. Water temperatures above the 125°F
can cause severe burns or death from scalding. Be sure to readand follow the warnings
outlined on the label pictured below.
The chart shown above may be used as a guide in
determining the proper water temperature for your
home.
Time/Temperature Relationship in Scalds
D A N G E R
HOT
BURN
Water temperature over 125°F can
cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water heater
Feel water temperature with hand
before bathing or showering.
Temperature limiting valves or mixing
valves are recommended for use.
.
DANGER: Households with small children,disabled,
or elderly persons may require a 120°F or lower
thermostat setting to prevent contact with “HOT” water.
The temperature of the water in the heater is regulated
by the electronic control on the front of the wate heater.
To comply with safety regulations, the thermostat was
set at 104°F before the water heater was shipped from
the factory.
Please consult Operating Instructions to learn more
about setting your heaters temperature.
Temperature Time To Produce a Serious Burn
120°F
More than 5 minutes
125°F
1½ to 2 minutes
130°F
About 30 seconds
135°F
140°F
145°F
About 10 seconds
150°F
155°F
Less than 5 seconds
Less than 3 seconds
About 1½ seconds
About 1 second
Setting： 77-131°F
Notice: Mixing valves are recommended
for reducing point of use water temperature
by mixing hot and cold water in branch water
lines. It is recommended that a mixing valve
complying with the Standard for Temperature
Actuated Mixing Valves for Hot Water
Distribution Systems be installed.
Remarks:
1.The above wire size and circuit breaker size are for this ECO90 9kW unit
only, if you need other high-power appliances, please do further research
for that.
2.About heating performance of the ECO90 unit, if water inlet in your area is
67 °F,you are able to get 1.4GPM hot water @111°F,if you set lower tempt,
you get more than 1.4GPM, correspondingly.
3.For the best user experience, the ECO90 unit is recommended for sink use
and booster for tank heater.Works for shower in Southern US only.
wire
wire
L1 L2
Washer
PAGE-14
Instruction Manual
Trouble-shooting/DiagnosticChart
Failure Phenomeno Possible Reason Treatment
Leakage in the joint
of Inlet and outlet pipe.
A.Poor connection of inlet
and outlet pipe.
B.The rubber washer is
damaged.
A.Reconnect the pipe.
B.Replace the washer.
The water temperature
is too high.
A. Water flow is too small.
B. Pipeline jam.
C. The power or temperature
is set too high.
A.Adjust the valve to increase
the water flow.
B.Clear the inlet filter and
shower head.
C.Select lower power level
or turn down the temperature.
The water is too cold.
A.The flowrate is too high.
B.The voltage is less than 240V.
C.The Temp set is too low.
D.Mixing too much cold water.
A.Adjust the valve to decrease
the water flow.
B.Check if the voltage is too
low or not.
C.Select higher Tempt set.
D.Mix less cold water.
Water temperature
is unstable.
The voltage or water pressure
is unstable.
The voltage water pressure
are back to normal.
The water is smaller
and smaller.
The inlet filter or shower is
blocked by water impurities.
Remove the inlet pipe, clean
the inlet filter/shower.
Circuit breaker switch
off the power.
A.Leakage of electricity.
B.The circuit breaker aging.
C.The AMPS load is not
enough.
A.Don's use it,send it back to
after-sales service to repair.
B.Change the circuit breaker.
C.Using circuit breaker with
high current.
The screen has no
display.
A.Power is not connected.
B.The screen is damaged.
C.Not 240V power.
A.Close the switch to
connect the power.
B.Replace the screen.
C.Chang to 240V power supply.
Malfunction Code
Failure analysis Solution
Leakage of electricity.
Temperature exceed 131°F/ 55°C.
Send to after-sales service.
A.Select lower power level or turn down
the temperature.
B.Increase water flow.
Temperature sensor failure.
Send back to after-sales service.
Dry heating.
A.Restart machine and adjust lower
temperature.
B.Increase water flow
1.One year warranty for the main unit.
2.If there is something wrong with your machine, please feel free to contact us
don't repair it by yourself.
3.Please contact us via e-mail:[email protected] with following information
included:
1)The product's name, model, the purchase date.
2)The detailed problem of the unit.
We will do our best to serve and help, please be rest assured that you will not
suffer any loss from this.
4.Please read the warranty card for more details.
5.To protect your right of after-sale service, please fill in the warranty card carefully.
Name Telephone
E-mail
Serial NO.
Installation Location
Installation DatePurchase Date
Product Model
Charhe or not Yes No Reason:
Check power
or not
Water leaking
or not
Follow steps
use or not
Instsllation
Personnal
(signature)
Customer
(signature)
Maintenance Date
Situation
Maintenance Personnel
(signature)
Replacement Of Parts
When installation is finished,please check and make sure it is in good condition and then
fill in the warranty card.When you need assistance, please send picture of the warranty card
to our customer service:[email protected] with description of the issue you meet.
We will do our best to serve and help,ensure you will suffer any loss from this, even though
it may exceed return window or warranty period.
READ ALL INSTRUCTIONS BEFORE USING
PAGE-09
Instruction Manual
ECOTOUCH Customer Service
