Marey ECO150 Operating and maintenance manual

Keep this manual with you after your unit has been installed, you
may need it for further technical information.
ECO150
ELECTRIC TANKLESS WATER HEATER
INSTRUCTIONAL
MANUAL
USA [phone] PR [phone]www.Marey.com

Congratulations! You’ve just purchased a new Marey ECO tankless water heater and
will soon begin to enjoy the benets of“going tankless.”
Please take the time to thoroughly read and understand this safety and installation
manual in its entirety before you attempt to install your new tankless water heater,
as it
contains important safety tips and instructions.
Please carefully read all instructions and warnings. Should you have any questions,
please visit www.marey.com for installation videos and FAQ.
Please keep this manual for future reference and technical information.

INDEX
QUICK START GUIDE
WARNING
IMPORTANT WARNINGS
IMPORTANT SAFETY INFORMATIONS
PRODUCT FEATURES
PRODUCT ADVANTAGES
TECHNICAL SPECIFICATION AND INSTALLATION REQUIREMENTS
PRODUCT INNER STRUCTURE
INSTALLATION GUIDELINE
INSTALLATION DIAGRAM
OPERATING INSTRUCTIONS
TROUBLE-SHOOTING/DIAGNOSTIC CHART
NORMAL MAINTENANCE
04
05
05
05
06
07
08
09
09
10
14
15
15

After power is supplied a beep can be heard. Turn on hot water faucet unit will
activate
upon water ow, display should show actual outlet temperature. Push power button
if
unit does not change due to water ow. Set desired temp with the up and down
arrows.
Test water to prevent scalds.
Attention: This unit requires a 7OA double pole breaker. For more information please
4) Operation
Plot the three holes for the mounting screws onto the wall. Mount vertically on a at
surface (i.e. board or walI) larger than the unit itself. Make sure heater is secure by
utilizing a stud or the provided wall anchors. Keep away from any potential splashing
or
Plumbing connections are ½" 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 ½" NPT
ttings. Please use the provided gaskets to prevent leaks. When tightening ttings,
use
a back-up wrench on inlet and outlet ttings (at sides of ttings are located behind
front cover). The cold water inlet is on the right side it should be preceded by a high
pressure discharge valve and a shut o valve in that order. 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 o ow at
Power wires and ground come into the unit from the upper right hand side of the back
panel. Use 6 AWG for your ground wire, running from the "E" space in the terminal
block all the way to the ground bar of the breaker panel. Run one 6 AWG wire from
each of the "L1" and "L2" connection points of the terminal block to the double pull 7O
amp breaker at your panel.
3) Electrical Connections
2) Water Connections
1) Mounting
ECO150
QUICK START GUIDE
04

WARNING
IMPORTANT WARNINGS
IMPORTANT SAFETY INFORMATION
If your water heater requires a reset, be sure to TURN OFF THE BREAKER prior to
resetting the unit.
Resetting your unit without turning o the breaker can result in personal injury and
damage to your water heater.
WARNING! There is water contained in the coils of your water heater at all times. If
your water heater is exposed to freezing temperatures, the water in the coils could
freeze, causing a break in the heat exchanger of the unit, or the supply and return lines.
This kind of damage will result in water running freely into the space where the water
heater is located,which can cause ooding. DO NOT install this water heater where it
may be subjected to a freeze. If your water heater is in an area where freezing is a
possibility, you must turn o the water to the heater and drain it of any water by
disconnecting the water lines. Leave the water lines disconnected until you intend to
use
This is not a do-it-yourself task. Failure to have this appliance installed by a licensed
plumber and electrician will void all warranties.
Do not attempt to install, repair or disassemble the tankless electric water heater
without rst shutting o the power to the unit directly at the circuit breaker box.
Installation of this product is restricted to indoor locations only by licensed plumbing or
electrical contractors.
1. The installation must be in compliance with the National Electrical Code, your local
electrical and plumbing codes.
2. This appliance must be EARTHED.
3. AII wiring and installation must be supervised by a qualied electrician.
4. CAUTION :This product has more than one power-supply connection point. Discon-
nect
all power supplies before servicing.
5. This appliance is not designed to be used by people (children included) with reduced
physical sensory or mental capabilities, or lack of experience and knowledge, unless
05

they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do
not play with the appliance.
6. This appliance MUST be permanently connected to the xed circuit breaker and it
must be installed vertically. DO NOT install this appliance near tinder or a strong
magnetic eld place.
7. 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 complete-
ly
thawed out before you switch it on.
8. Please feel the outgoing hot water temperature with your hands to make sure it is
suitable for showering. As a resu It, you will avoid getting scalded.
9. Before connecting the pipes to the water heater hoses, it is extremely important to
FLUSH the pipes to wash away all plumbing paste or residue in them.
10. The heating chamber is covered by composite nano insulation material; it is natural
if
there might be a bit of smel I or green blue smoke when the unit is used for the rst
time.
11. If there is damage to the wire, you must contact a qualied electrician to replace it
with specic wire from our authorized dealers.
12.CAUTION: FOR HOUSEHOLD AND INDOOR USE ONLY.
13. CAUTION: Risk of electric shock, CONNECT ONLY TO A CIRCUIT THAT IS
The tankless electric water heaters incorporate patented technology with multi-safety
devices. Besides, the unit has the following features:
1. Tankless; instantaneous heating for on demand hot water; no pre-heating; no
stand-by
heating loss; energy-saving.
2. Micro-computer control; adopting patent heating technology. Water is completely
separated from electricity by multi-layers of composite nano insulation material.
PRODUCT FEATURES
06

ELECTRICAL DIAGRAM
3. Over temperature protection: when the outgoing water temperature reaches over
140°F/60°C, the electricity will be cut o to avoid getting scalded and the screen will
display El. The appliance will start working automatically when the temperature drops
to the set temperature.
4. Malfunction of sensor - when there is malfunction of the temperature sensor, the
heater stops working and displays E3.
5. Conversion between degree Fahrenheit and degree Celsius.
Thermal Cut-Out 95°C
Control
System
T2
R2
T1
R1
Display
Screen Inlet Temp. Sensor
Flowmeter
Outlet Temp. Sensor
REMARK: R: HEATING SYSTEM T: TRIAC
L1
L2
E
07

TECHNICAL SPECIFICATIONS AND INSTALLATION REQUIREMENTS
KW
14.6 kW
Power
AMP
70 Amp
Breaker
Works with
Low Pressure
German
Technology
V
220V - 240V Overtemp
Protection
Non-Corrisive Micro-Chip
Computer
No PreheatMultiple Points
Of Use
50ft Max Distance
To Point of Use
MAX
Digital Panel
Voltage
Power
Min. Required
Circuit Breaker Size
Max. Amperage
Recommended Wire Size
Min. Water Flow
to Activate the Unit
Safe Operating Pressure
Water Connections
Installation
Temperature Setting
Dimensions
Weight
PRODUCT CODE
ECO150 | GPM
ECO150
208V - 240V
11kW - 14.6kW
70A
Double Pole Breaker
60.8A
6 AWG
0.53 GPM / 2L/min
5 PSI - 85 PSI
½" NPT
Mounted Vertically
Digital Panel
8.7" X 14.2" X 3.5"
10.1 lbs
1.0
1.5
2.0
2.5
3.0
3.5
98°F
68°F
51°F
41°F
34°F
29°F
Temp. Increase
per GPM
Voltage PowerMax. Amperage
208V 11.0kW53A
220V 12.3kW56A
240V 14.6kW61A
*Gallons per minute indicated on the
Temperature Increase table are
calculated assuming an outlet tempera-
ture of 105°F. Variable factors such
alternate incoming water temperature
or incorrect installation may yield
dierent results.
08

1. Make sure the appliance is intact, and the ttings are complete.
2. Please 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" at the circuit breaker
panel.
4. This appliance MUST be permanently connected to the xed circuit breaker. If you do
not use the heater, please switch o the circuit breaker.
5. DO NOT install this appliance near tinder or a strong magnetic eld place. The unit
must only be assembled in a VERTICAL position near by the water ttings. Please try the
unit after getting the water ow.
PRODUCT INNER STRUCTURE
INSTALLATION GUIDELINE
Down
On/OFf Up
Temp. Sensor
Heating Chamber
Flowmeter
Terminal blocks
L2
L1
E
Display Screen
Bottom Panel
Control Board
09

INSTALLATION DIAGRAM
FIXED INSTALLATION ON THE WALL
Locate an appropriate place on a section of the wal I as mentioned above.
Fig. 01: Front and back of the appliance.
Fig. 02: Remove screws which are xed at the front and back covers of the
appliance.
10

Fig. 03: Open the front cover, connect the cable to the terminal blocks, and
please notice the guidance logo below the terminal blocks.
Fig. 04: Connect PCB row line of the front cover to PCB of the back cover, and
then x the front and back cover with locking screws.
11

Fig. 05: Mark three mounting holes on the wall according to the following
picture, then drill three holes of 6.00mm diameter. Put expansion bolts in the
holes, and then screw the self tapping screws into the expansion bolts.
Fig. 06: Fix the appliance on the mounting screws.
12

Fig. 07: Connect the water pipe to the water inlet and water outlet connections,
please remember to install the rubber seal ring.
Water connections
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.
3. It is required to use 1/2" NPT water connections to t the models on EC0150.
4. 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.
Electrical connection
1. AIl electrical work must comply with national and applicable state and local electrical
codes.
2. The unit must be connected to a properly grounded dedicated branch circuit of
proper voltage rating.
3. EC0150 can be connected to a single circuit, using a supply cable protected by a
double pole breaker.
4. While connecting the cable to the terminal blocks, please make sure the metal wire
13

5. 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 electrical hook-up.
OPERATING INSTRUCTIONS
1. Turn on the circuit breaker to bring electrical power to the unit.
2. Open the water faucet for a few minutes until the water ow is continuous and all
the
air is purged from the water pipes. The unit must operate after the breakers are turned
on
3.After the unit is supplied with power, a beep sound can be heard and LED lights
appear
for 2 seconds; if there is no other display, the appliance keeps standby.
4. Press to turn ON/OFF the appliance. When the unit is ON, LED lights show the
actual outgoing water temperature. When the appliance stops working, after 5
seconds,
the screen switches on the screen saver. The display screen light will be o. If some-
body
touches the screen, the Iight will be on again.
5. Press and to adjust the outlet water temperature. Temperature setting
range is 30-52°C/ 86-125°F.
- 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.
- If the unit is not used in winter, drain out the water completely so that the heater
does
not freeze.
- Please clean the inlet lter and the shower periodically in order to keep a proper
water ow.
6. Press to change the temperature display between Fahrenheit and Celsius
degrees.
7. There is an automatic memory function to avoid repetitive operation. When you turn
14

TROUBLE-SHOOTING / DIAGNOSTIC CHART
NORMAL MAINTENACE
Note: Do not attempt to repair this water heater yourself. Call a technician for assistance.
The power supply always needs to be shut o when these operations are carried out.
Regular maintenance is not required. However, to ensure consistent water ow, 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 lter screen at the inlet connection which should be cleaned from
time to time. Please turn o the water ow before doing this.
* 7 and 8 should only be performed by a qualied electrician. The person who initially
installs the unit is the best one to contact for help.
A. Tighten ttings.
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 ow.
Clean strainer and shower.
A. Reduce the temperature.
B. Turn up the water ow.
Please contact with the local dealer.
A. Fittings not tight
B. Rubber washer worn-out
A. Power not connected.
B. LCD damaged.
C. LCD not connected to PCB.
A. No water out from shower.
B. Water pressure too low.
C. Key or PCB damaged.
A. Too high temperature set.
B. Water ow too small.
A. Low temperature set.
B. Water ow too much.
Inlet strainer or shower
clogged.
A. Outlet temperature is over
6O°C/14O° F.
1. Inlet and outlet
ttings leaking
2. LED no signal
3. Functional keys not
working
4. Water too hot
5. Water too cold
6. Outlet gets water
smaller and smaller.
7. LED displays E1
8. LED displays E3
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTIONS
15

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www.Marey.com
[phone]
U.S.A
[phone]
PUERTO RICO
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 suggestions.