Congratulations!

You've just purchased a new Marey ECO240 tankless water heater and will soon begin to enjoy the benefits of “going tankless.”

Take the time to thoroughly read and understand this safety and installation manual in its entirety before you attempt to install your new ECO240 tankless water heater, as it contains important safety tips and instructions.

Please carefully read all instructions and warnings. If you need assistance or have any questions please contact us at:

1-512-332-2229

Please keep this manual for future reference and technical information.

WARNING

IMPORTANT WARNINGS

IMPORTANT SAFETY INFORMATIONS

PRODUCT FEATURES

PRODUCT ADVANTAGES

INSTALLATION DIAGRAM

ELECTRICAL DIAGRAM

TECHNICAL SPECIFICATIONS AND INSTALLATION REQUIREMENTS

PRODUCT INNER STRUCTURE

INSTALLATION GUIDELINE

TROUBLE-SHOOTING / DIAGNOSTIC CHART

CUSTOMER SERVICE

OTHER PRODUCTS

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If your water heater requires a reset, be sure to TURN OFF THE BREAKER prior to resetting the unit.

Resetting your unit without turning off the breaker can result in personal injury and damage to your water heater.

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 plumber or electrician.

Installation of this product is restricted to indoor locations.

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 unit directly at the circuit breaker panel.

1. The installation must be in compliance with your local electrical and plumbing codes.

2. This water heater must be GROUNDED.

3. All wiring and installation must be supervised by a qualified electrician.

4. CAUTION: This product has more than one power-supply connection point.

Disconnect all power supplies before servicing.

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 supervised to ensure that they do not play with the water heater.

6. This water heater MUST be permanently connected to a fixed circuit breaker.

7. DO NOT install this water heater near volatile or flammable substances, near tinder wood or near a strong magnetic field.

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8. DO NOT switch the heater on if you suspect that it may be frozen. Wait until you are sure that it has completely thawed out.

9. Before taking a shower, feel the outlet hot water temperature with your hand to make sure it is suitable for showering to avoid getting scalded.

10. Before connecting the water heater hoses to the plumbing in your home, it is extremely important to FLUSH the lines to wash out any plumbing paste or residue in the lines.

11. The heating chamber is treated with composite nano-insulation material. It is normal for there to be a slight odor and possibly a small amount of green/blue smoke when the unit is used for the first time.

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.

Replacement parts are available from Marey.

13. The shower head should be cleaned and checked periodically for debris and build-up.

14. This water heater must be installed vertically, per the mounting instructions.

15. CAUTION: FOR HOUSEHOLD AND INDOOR USE ONLY

1. Energy efficient, instantaneous heating on demand. It's tankless, so no preheating and no stand-by heat loss, which saves even more energy.

2. Micro-computer controlled, patented heating technology.

3. Extremely safe! Water is completely separated from electricity by multi-layers of composite nano-insulation material, and the heater contains multiple additional safety devices, as outlined below.

4. Low voltage/power fluctuation protection. If the unit detects an electrical fluctuation (due to a power supply voltage drop, loose wire, etc), the electricity will be cut-off within milliseconds by the fluctuation protector. If this occurs, the screen displays an E2 code.

5. Malfunction sensor. If there is a malfunction with the temperature sensor, the heater stops working and the screen displays an E3 code.

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6. Dry-heating thermal cut-off. In case of dry heating, the electricity will be cut off and the screen display will display an E4 code.

7. Micro-computer features an automatic electricity and water consumption calculating function.

8. Reads temperature in both Fahrenheit and Celsius.

Marey heating element is made from a single piece of cast aluminum, so there will never be water leakage nor the electric leakage in the heating chamber. Marey also have an extra stainless steel water flow channel instead of the old aluminum, so no matter how is your water quality inside the heating element, the heat element will service a long life.

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Hot

Out

Double Pole

Circuit Breakers

ECO240

50A 50A 50A

{

Cold

In

8/3 Wire from

Service Panel

Pressure Relief Valve

Fig. 01

L1

L1

L1

L2

E

THERMAL CUT-OUT 90ºC

OUTLET TEMP. SENSOR

CONTROL

SYSTEM

T1 R1

T2 R2

T3 R3

DISPLAY

SCREEN

INLET TEMP. SENSOR

FLOWMETER

REMARK: J:RELAY R:HEATING SYSTEM T:TRIAC

Fig. 02

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TECHNICAL SPECIFICATIONS

Power

Voltage

ECO240

24Kw

240V/60Hz

Max. Amperage 100A

Min. Required Circuit Breaker Size 3x40A

Recommended Wire Size 3x8 AWG copper

Min. Water Flow Activate Unit

Temp. Scope

0.85 GPM / 3.2 LPM

86~127º

Water Connections

Height x Width x Depth

3/4"NPT

16" x 11" x 3,5"

Buttom Case

Control Board

Display Screen

Display Screen

Up

On/Off

Down

Temp. Sensor

Flowmeter

Fig. 03

Air Switch

E N L

Power

Supply

Terminal Blocks

Height to the Ground

Fig. 04

Sealer

Release Valve

Wash with Filer

Inlet Water

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NOTE: Installation must be in compliance with the National Electrical Code and your local electrical and plumbing codes.

1. Do not install the unit in a room where there is a chance of freezing.

2. 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 position near the water fittings.

3. Mount the unit to a flat section of wall, well away from any potential water splashes or spray. Be sure to use wall anchors, or screw directly into studs.

4. Position the unit upright with all plumbing connections at the bottom of the unit.

5. Make sure the water heater and all fittings are complete and intact.

6. Make sure that the main power supply, water pressure, ground, amperage, voltage, and wiring meet all standards.

7. 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” at the circuit breaker panel.

8. This water heater MUST be permanently connected to a fixed and dedicated circuit breaker. If the heater will be unused, switch off the circuit breaker.

INSTALLATION

Locate an appropriate place on a section of wall that meets all safety and installation requirements.

Front and back of the appliance (please see Fig. 05).

Fig. 05

Remove the screw which fixes the bracket on the back of the appliance (Fig. 06).

Fig. 06

Remove the bracket from the appliance (Fig. 07).

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. If you are on a stud, screw the bracket directly into the wall. If you are not on a stud, insert the plastic anchor in the hole, and secure the bracket using the screws supplied (Fig. 08).

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 cover completely.

Please note: If LCD connection cable cannot be disengaged, simply set the front cover aside and keep the cable connected.

Fig. 10

Fix the appliance to the hanging bracket. Make sure the unit is properly secured to the bracket (See Fig. 11).

Fig. 11

Fig. 09

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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).

Reattach the cable for the LCD panel if disconnected and reinstall the front cover using the screws and washers previously removed. (Fig. 13).

Fig. 12

Important Notes About Electrical Connections:

1. Before beginning any work on the electric installation, be sure that the main breaker panel switch is OFF to avoid any danger of electric shock. All mounting and plumbing must be completed before proceeding with the electrical installation.

2. All electrical work must comply with national and applicable state and local electrical codes.

3. All units must be connected to a properly grounded dedicated branch circuit of proper voltage rating.

4. This product requires three independent circuit breakers. Use threeinsulated wires for the three separate double-pole breakers.

5. When connecting the wires to the terminal blocks, make sure the metal wire ends 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. 13

Connect the cold water supply to the threaded pipe labeled “inlet” and the hot water to the threaded pipe labeled “outlet.” IMPORTANT: RUBBER WASHER MUST BE

USED FOR PROPER SEAL. (Fig. 14) Connections are 3/4” NPT.

Fig. 14

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Important Notes About Water Connections:

1. All water pipe must comply with national and applicable state and local water pipe codes.

2. A pressure relief valve must be installed if the cold water supply pressure exceeds 150PSI.

3. The unit should be connected directly to the main water supply. Flush pipe with water to remove any debris or loose particles.

4. All connections to the unit should be ¾” NPT. Larger pipe can be connected but the appropriate adapters must be used.

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.

How the Unit works

1. This unit heats water instantaneously as it flows through the heating elements.

2. The electronic control monitors the flow rate and the incoming water temperature 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 maximum flow rate is exceeded.

Using the Water Heater - Operation Instructions

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 correct any leaking connections.

2. Turn on the circuit breaker to connect power to the unit.

3. Press ON/OFF to start the unit.

If there is power to the unit, but no digital display, turn off the circuit breaker. Double check to make sure that the cable to the LCD panel on the front cover is correctly connected inside the unit, then turn the breaker back on.

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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 shows the actual water temperature of the outlet water. After 5 seconds, the screen switches to a screen saver to conserve power. The display screen light will be off. If you touch the screen, it will light up again.

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 options for the temperature setting is 30ºC-52ºC/86ºF-127ºF.

WARNING: If the unit has been used recently, you may initially get a short burst of very hot water from the unit. Allow a few seconds for the water to cool down to the set point. Test the water before you take a shower.

If the unit will not be used during winter, drain out any water completely so that the heater will not freeze.

Periodically clean the inlet filter screen and the shower head to maintain strong water flow.

7. Press then press to convert the temperature display between Fahrenheit and Celsius.

8. The unit features an automatic memory function to avoid repetitive operation.

When you turn on the water heater, the default set point will be the same as the last setting used.

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Problems Possible Causes

1. Inlet and outlet fittings leaking

2. LED no signal

A. Fittings not tight

B. Rubber washer worn-out

A. Power not connected.

B. LCD damaged.

C. LCD not connected to PCB.

3. Functional keys not working

4. Water too hot

5. Water too cold

A. No water out from shower.

B. Water pressure too low.

C. Key or PCB damaged.

A. Too high temperature set.

B. Water flow too small.

A. Low temperature set.

B. Water flow too much.

Inlet strainer or shower clogged.

6. Outlet gets water smaller and smaller.

7. LED displays E1 Outlet temperature is over

86 ºF/127ºF.

8. LED displays E3 Temperature sensor failure.

9. LED displays E4 Dry Heating.

10. Pressure relief valve releases water

11. Display overload

A. Outlet blocked.

B. Inlet pressure over 0.7Mpa.

Inlet water flow is too big.

Corrective Actions

A. Tighten fittings.

B. Change rubber washer.

A. Connect power to the unit.

B. Change LCD.

C. Connect LCD to the PCB Board.

A. Open valve to get water.

B. Open valve to get pressure.

C. Change key or PCB.

A. Set a lower temperature.

B. Open valve bigger.

A. Set a higher temperature.

B. Reduce water flow.

Clean strainer and shower.

A. Reduce the temperature.

B. Turn up the water flow.

Please contact with your local dealer.

Shut off. Clean all outlets from any debris, dirt, any particle or scale inside the pipe.

A. Clean shower set.

B. Reduce water pressure.

Reduce the inlet water flow.

NORMAL MAINTENANCE

Note: Do not attempt to repair this water heater yourself. Call a service person for assistance. Always turn off the breaker before working on the unit.

To ensure consistent water flow, the following is recommended:

1. Periodically remove build-up and dirt that may accumulate at the aerator of the faucet or in the shower head.

2. Periodically clean the built-in filter screen at the inlet connection on the water heater. Water faucet must be turned off before cleaning the screen.

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 contact for help, or contact Marey for service.

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At Marey, we pride ourselves on the excellence of our customer service and support team.

Please feel free to contact us if you have any questions about our products, warranty service, or if you need assistance installing a unit. We also strive for continuous improvement, so we welcome your comments, feedback and s uggestions.

Please visit our website to get to know more about other Marey products.

ECO110 POWER PAK SANTON

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1-512-332-2229 [email protected]

AQUAMATIC GAS PORTABLE POWER GAS

Delbrey Street, 211

San Juan, Puerto Rico

00912

Tel. 1-512-332-2229 www.marey.com

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