Marey ECO180 User Manual

Congratulations!
You've just purchased a new Marey ECO180 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 ECO180
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.

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.

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.

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 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. Over-heating thermal cut-off to avoid scalds. When the outlet water temperature
reaches 127°F / 52°C, the electricity is automatically cut off. If this occurs, the screen
beeps and displays an E1 code.

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

0504

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.

L1

THERMAL CUT-OUT 90ºC

Fig. 02

T1

R1

L1

L2

CONTROL

SYSTEM

R2

T2

E

OUTLET TEMP. SENSOR

SCREEN

INLET TEMP. SENSOR

FLOWMETER

DISPLAY

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

Fig. 01

Fig. 03

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