Marey ECO240 Instruction Manual

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:

Please keep this manual for future reference and technical information.

1-512-332-2229

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TROUBLE-SHOOTING / DIAGNOSTIC CHART

WARNINGS
IMPORTANT SAFETY INFORMATIONS
PRODUCT FEATURES
PRODUCT ADVANTAGES
INSTALLATION DIAGRAM
ELECTRICAL DIAGRAM
TECHNICAL SPECIFICATIONS AND INSTALLATION REQUIREMENTS
PRODUCT INNER STRUCTURE
INSTALLATION GUIDELINE

CUSTOMER SERVICE
OTHER PRODUCTS

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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 pre-

heating 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.

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.

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.

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.

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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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