Marey ECO180 User manual

Congratulations!
You'vejustpurchasedanew Marey ECO180 tankless water heater and will
soon begin to enjoy the benefits of “going tankless.”
Takethetimetothoroughlyreadandunderstandthissafetyand installation
manualinitsentiretybeforeyouattempttoinstallyournewECO180tankless
waterheater,asitcontainsimportantsafetytipsandinstructions.
Pleasecarefullyreadallinstructionsandwarnings. Ifyouneedassistance or
have any questions please contact us at:
Please keep this manual for future referenceandtechnicalinformation.
1-512-332-2229
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TROUBLE-SHOOTING / DIAGNOSTIC CHART
WARNINGS
IMPORTANT SAFETY INFORMATIONS
PRODUCT FEATURES
PRODUCTADVANTAGES
INSTALLATION DIAGRAM
ELECTRICAL DIAGRAM
TECHNICAL SPECIFICATIONS AND INSTALLATION REQUIREMENTS
PRODUCT INNER STRUCTURE
INSTALLATION GUIDELINE
CUSTOMER SERVICE
OTHER PRODUCTS
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4002422

12. If there is damage to the wiring or any internal part, you must contact a qualified
electrician to replace it, or send it to one of our service centers for repair.
ReplacementpartsareavailablefromMarey.
13. The shower head should be cleaned and checked periodically for debris and
build-up.
14. Thiswaterheatermustbeinstalledvertically,perthemountinginstructions.
15.CAUTION:FORHOUSEHOLDANDINDOORUSEONLY
1. Energy efficient, instantaneous heating on demand. It's tankless, so no pre-
heatingandnostand-byheatloss,whichsavesevenmoreenergy.
2. Micro-computer controlled, patented heating technology. The Marey Heater
tankless electric water heaters are registered under Patent No. ZL 2008 2
0081568.0.
3. Extremely safe! Water is completely separated from electricity by multi-layers of
composite nano-insulation material, and the heater contains multiple additional
safetydevices,asoutlinedbelow.
4. Over-heating thermal cut-off to avoid scalds. When the outlet water temperature
reaches127°F/53°C,theelectricityisautomaticallycutoff. Ifthisoccurs,thescreen
beepsanddisplaysanE1code.
5. Low voltage/power fluctuation protection. If the unit detects an electrical
fluctuation(duetoapowersupplyvoltagedrop,loosewire, etc), the electricity will be
cut-off within milliseconds by the fluctuation protector. If this occurs, the screen
displaysanE2code.
6. Malfunction sensor. If there is a malfunction with the temperature sensor, the
heaterstopsworkingandthescreendisplaysanE3code.
7. Dry-heatingthermalcut-off.Incase ofdryheating,the electricitywillbecut offand
thescreendisplaywilldisplayanE4code.
8. Micro-computer features an automatic electricity and water consumption
calculatingfunction.
9. ReadstemperatureinbothFahrenheitandCelsius.
This is not a do-it-yourself project. If you are not familiar with basic plumbing and
electricity, we strongly recommend that this water heater be installed by a licensed
plumberorelectrician.
Installationofthisproductisrestrictedtoindoorlocations.
Under no circumstances should you attempt to install, repair or disassemble the
Marey Heater tankless electric water heater without first shutting off all power to the
unitdirectlyatthecircuitbreakerpanel.
1. The installation must be in compliance with your local electrical and plumbing
codes.
2.ThiswaterheatermustbeGROUNDED.
3.Allwiringandinstallationmustbesupervisedbyaqualifiedelectrician.
4. CAUTION: This product has more than one power-supply connection point.
Disconnectallpowersuppliesbeforeservicing.
5. This water heater is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience or
knowledge, unless they have been given supervision or instruction concerning the
use of the water heater by a person responsible for their safety. Children should be
supervisedtoensurethattheydonotplaywiththewaterheater.
6.ThiswaterheaterMUSTbepermanentlyconnectedtoafixedcircuitbreaker.
7. DO NOT install this water heater near volatile or flammable substances, near
tinderwoodornearastrongmagneticfield.
8.DONOTswitchtheheateronifyoususpectthatitmaybefrozen.Waituntilyouare
surethatithascompletelythawedout.
9. Before taking a shower, feel the outlet hot water temperature with your hand to
makesureitissuitableforshoweringtoavoidgettingscalded.
10. Before connecting the water heater hoses to the plumbing in your home, it is
extremelyimportantto FLUSHthelinestowash outanyplumbingpasteorresiduein
thelines.
11. The heating chamber is treated with composite nano-insulation material. It is
normalfortheretobeaslightodorandpossiblyasmallamountofgreen/bluesmoke
whentheunitisusedforthefirsttime.
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- CE and ETL approved
- Smart German technology avoids heating waste at any point of use
- Easily adjusts to your needs
- The only unit on the market that will not accumulate sediment
- Compact and powerful
- Instantaneous hot water supply conserves water and uses up to 60% less
electricity than a conventional tank water heater, making it both cost-effective
and environmentally friendly
- Patented, long lifetime heating elements
- Outstanding Marey Heater quality
- Excellent service and 5-year warranty
German Technology
R1
R2
R3
R4
R5
R6
R7
R8
J1
J2
J3
J4 T
INLET TEMP. SENSOR
FLOWMETER
OUTLET TEMP. SENSOR DISPLAY
SCREEN
CONTROL
SYSTEM
L1
E
L2
LIVE WIRE AND NULL WIRE GO THROUGH
LEAKAGE SENSOR
LEAKAGE SENSOR
THERMAL CUT-OUT 95ºC
T
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Fig. 02
Cold
In
Hot
Out
{
Fig. 01

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Height to the Ground
Sealer
Release Valve
Wash with Filer
Inlet Water
2000mm
Power
Supply
E N L
Air Switch
Fig. 03
Fig. 04
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TECHNICAL SPECIFICATIONS
Power
Voltage
Max. Temp. Increase at 1.5 GPM
Min. Water FlowActivate Unit
Temp. Scope
Water Connections
18Kw / 61459 BTU/Hour
220V-240V / 60Hz
0.92GPM / 3.5LPM
3/4"NPT
82~127ºF
ECO180
Max. Amp. Load 75A
Min. Required Circuit Breaker Size 2x50A
Recommended Wire Size 2x8 AWG copper
Water Proof
Weight
Height x Width x Depth
13lbs / 6kg
11” x 16” x 3,5”
Ipx4
81ºF
Starting Pressure
Water Pressure
29 PSI
29 PSI - 101.5 PSI
Installation Vertical Mounted
Control Manual
Over-temp. Protection 140ºF
Cable 6mm²
Dry-heating Protection 203ºF +/- 37ºF
280 x 406 x 89 mm

NOTE: Installation must be in compliance with the National Electrical Code and
yourlocalelectricalandplumbingcodes.
1. Donotinstalltheunitinaroomwherethereisachanceoffreezing.
2. Check the pressure of the main water supply. To operate correctly, the unit
requiresthatthewaterpressurebebetween29PSIand101.5PSI.
3. DO NOT install this water heater near tinder, volatile or flammable substances,
or near a strong magnetic field. The unit must only be mounted in a VERTICAL
positionnearthewaterfittings.
4. Mount the unit to a flat section of wall, well away from any potential water
splashesorspray. Besuretousewallanchors,orscrewdirectlyintostuds.
5.Positiontheunituprightwithallplumbingconnectionsatthebottomoftheunit.
6.Makesurethewaterheaterandallfittingsarecompleteandintact.
7. Make sure that the main power supply, water pressure, ground, amperage,
voltage,andwiringmeetallstandards.
8. The water heater must be connected to a properly-grounded, dedicated branch
circuit with the proper voltage rating. The ground must be connected to the
“ground”atthecircuitbreakerpanel.
9. This water heater MUST be permanently connected to a fixed and dedicated
circuitbreaker.Iftheheaterwillbeunused,switchoffthecircuitbreaker.
INSTALLATION
Locate an appropriate place on a section of wall that meets all safety and
installationrequirements.
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Fig. 05
Front and back of the appliance (please see Fig. 05).
Removethescrewwhichfixesthebracketonthebackoftheappliance(Fig.06).
Removethebracketfromtheappliance(Fig.07).
Fig. 06
Fig. 07

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Hold the back bracket hanger in position against the wall in the desired hanging
location. Check to make sure that the bracket is level. Mark the wall where the
three mounting holes should be located. Drill holes of ¼” diameter in the marked
locations.Ifyouare onastud,screwthebracketdirectlyintothewall. Ifyouarenot
on a stud, insert the plastic anchor in the hole, and secure the bracket using the
screwssupplied(Fig.08).
Remove (4) screws and washers (Fig 09) from the unit to free the front cover.
Carefully lift the front cover off the unit a few inches. Disengage the plug
connecting the front cover LCD panel to the body of the unit (Fig 10). Remove the
covercompletely.
Please note: If LCD connection cable cannot be disengaged, simply set the front
coverasideandkeepthecableconnected.
Fig. 08
Fig. 09
Fix the appliance to the hanging bracket. Make sure the unit is properly secured to
thebracket(SeeFig.11).
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Fig. 10
Fig. 11

Connect the power cable at the lower right side of the unit to the terminal block.
Each wire in the cable is labeled to correspond with spaces in the terminal block.
Make sure that you plug the appropriately labeled wire into the corresponding
space on the terminal block. Note that the unit will be connected to two circuit
breakers(Fig.12).
ImportantNotesAboutElectricalConnections:
1. Before beginning any work on the electric installation, be sure that the main
breakerpanelswitchisOFFtoavoidanydangerofelectricshock.Allmountingand
plumbingmustbecompletedbeforeproceedingwiththeelectricalinstallation.
2. All electrical work must comply with national and applicable state and local
electricalcodes.
3. All units must be connected to a properly grounded dedicated branch circuit of
propervoltagerating.
4.This product requires two independent circuit breakers. Use two insulated wires
forthetwoseparatedouble-polebreakers.
5.Whenconnectingthewirestotheterminalblocks,makesurethemetalwireends
and the terminal blocks completely touch. Then, tighten the screws securely.
Failure to properly tighten can result in current escape and burning of the terminal
blocks.
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Fig. 12
Reattach the cable for the LCD panel if disconnected and reinstall the front cover
usingthescrewsandwasherspreviouslyremoved.(Fig.13).
Connectthecoldwater supplytothethreadedpipelabeled“inlet”and thehotwater
tothethreadedpipelabeled“outlet.”IMPORTANT: RUBBERWASHERMUSTBE
USEDFORPROPERSEAL.(Fig.14) Connectionsare3/4”NPT.
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Fig. 14
Fig. 13

ImportantNotesAboutWaterConnections:
1. All water pipe must comply with national and applicable state and local water
pipecodes.
2. A pressure relief valve must be installed if the cold water supply pressure
exceeds150PSI.
3. The unit should be connected directly to the main water supply. Flush pipe with
watertoremoveanydebrisorlooseparticles.
4.All connections to the unit should be ¾” NPT. Larger pipe can be connected but
theappropriateadaptersmustbeused.
5. Please remember to install rubber seal rings at the connections. When all water
connections are completed, check for leaks and take corrective action before
proceeding.
HowtheUnitworks
1.Thisunitheatswaterinstantaneouslyasitflowsthroughtheheatingelements.
2.Theelectroniccontrolmonitorstheflowrateandtheincomingwatertemperature
and then switches on the required number of heating elements to reach the set
temperature.
3. The outlet water temperature will be higher than the setting if the minimum flow
rate isn't met. The outlet water temperature will be lower than the setting if the
maximumflowrateisexceeded.
UsingtheWaterHeater-OperationInstructions
1. Turn on the water and allow it to run through the unit for a few minutes, until
water flow is continuous and all air is purged from the water pipes. Check for and
correctanyleakingconnections.
2.Turnonthecircuitbreakertoconnectpowertotheunit.
3. PressON/OFFtostarttheunit.
Ifthereispowertotheunit,butnodigitaldisplay,turnoffthecircuitbreaker. Double
check to make sure that the cable to the LCD panel on the front cover is correctly
connectedinsidetheunit,thenturnthebreakerbackon.
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4. After the unit is supplied with power, a beep sound can be heard and an LED
lights up for 2 seconds. If no other function is turned on, the unit stands by in this
mode.
5. Press “ON/OFF” to start or stop the unit. When the unit is ON, the LED display
showstheactualwatertemperatureoftheoutletwater.After5seconds,thescreen
switchestoascreen saver to conservepower.Thedisplayscreenlightwill be off.If
youtouchthescreen,itwilllightupagain.
6. The outlet water temperature can be adjusted by changing the temperature
settings on the heater. Press and to adjust the temperature. The range of
optionsforthetemperaturesettingis30ºC-53ºC/82ºC-127ºF.
WARNING: If the unit has been used recently, you may initially get a short burstof
very hot water from the unit.Allow a few seconds for the water to cool down to the
setpoint.Testthewaterbeforeyoutakeashower.
If the unit will not be used during winter, drain out any water completely so that the
heaterwillnotfreeze.
Periodically clean the inlet filter screen and the shower head to maintain strong
waterflow.
7.Press thenpress toconvertthetemperaturedisplaybetweenFahrenheit
andCelsius.
8. The unit features an automatic memory function to avoid repetitive operation.
Whenyouturnon the waterheater,thedefault set point willbethesame as the last
settingused.
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WARNING: Corrections to problems 8, 9 and 10 should only be performed by
qualified electrician. The person who initially installed the unit is the best one to
contactforhelp,orcontactMareyforservice.
Problems
Possible Causes
Corrective Actions
1. Inlet and outlet
fittings leaking
A. Fittings not tight
B. Rubber washer worn-out
A. Tighten fittings.
B. Change rubber washer.
2. LED no signal
A. Power not connected.
B. LCD damaged.
C. LCD not connected to PCB.
A. Connect power to the unit.
B. Change LCD.
C. Connect LCD to the PCB Board.
3. Functional keys not
working
A. No water out from shower.
B. Water pressure too low.
C. Key or PCB damaged.
A. Open valve to get water.
B. Open valve to get pressure.
C. Change key or PCB.
4. Water too hot
A. Too high temperature set.
B. Water flow too small.
A. Set a lower temperature.
B. Open valve bigger.
5. Water too cold
A. Low temperature set.
B. Water flow too much.
A. Set a higher temperature.
B. Reduce water flow.
6. Outlet gets water
smaller and smaller.
Inlet strainer or shower clogged.
Clean strainer and shower.
7. LED displays E1
Outlet temperature is over
82º/127ºF.
A. Reduce the temperature.
B. Turn up the water flow.
8. LED displays E2
There is electricity leakage.
Please contact with the local dealer.
9. LED displays E3
Temperature sensor failure.
Please contact with your local dealer.
10. LED displays E4
Dry Heating.
Shut off. Clean all outlets from any
debris, dirt, any particle or scale inside
thepipe.
11. Pressure relief
valve releases water
A. Outlet blocked.
B. Inlet pressure over 0.7Mpa.
A. Clean shower set.
B. Reduce water pressure.
12. Display overload
Inlet water flow is too big.
Reduce the inlet water flow.
NORMALMAINTENANCE
Note: Do not attempt to repair this water heater yourself. Call a service person for
assistance.Alwaysturnoffthebreakerbeforeworkingontheunit.
Toensureconsistentwaterflow,thefollowingisrecommended:
1. Periodically remove build-up and dirt that may accumulate at the aerator of the
faucetorintheshowerhead.
2. Periodically clean the built-in filter screen at the inlet connection on the water
heater. Waterfaucetmustbeturnedoffbeforecleaningthescreen.

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1-512-332-2229
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GAS PORTABLE
AQUAMATIC POWER GAS
SANTON
ECO110 POWER PAK
21
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San Juan, Puerto Rico
00912
Tel. [phone]
www.marey.com
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team.
Pleasefeelfreetocontactusifyouhaveanyquestionsaboutourproducts, warranty
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