RinKmo EI24 Guide

Before attempting to install the tankless electric water heater, please take the time to read and understand the installation

and safety manual thoroughly and carefully. The manual contains important safety tips and instructions.

INSTALLATION AND USER INSTRUCTIONS

TANKLESS ELECTRIC WATER HEATERS

READ AND SAVE THESE INSTRUCTIONS

Installer: Leave this manual with the homeowner.

EI18

EI24

Model:

8888

WARNING

[email protected]

▲ This water heater is used to provide domestic hot water

for household use and can provide multiple outputs.

▲ If the water heater is not used, the connection with

power supply shall be cut off. In order to avoid a hazard.

▲ If it is not used for a long time in winter, Drain the water

from the the water heater to avoid water frozen which will

damage the container. Please cut off the power supply

before emptying.

▲ Keep the instructions after installation, you may need it

later to get more information and support.

NOTE: This unit has multiple power inputs. Shut off all

breakers before maintenance.

IMPORTANT INFORMATION

Thanks for being a valued Customer.

Hope this electric water heater you purchased could make

your life better as we expected.

You're covered with Rinkmo 1-year free warranty to

against any manufacturing defect. You are always

welcome to reach us for warranty service or technical

support, especially

1) when you received a damaged, defective electric water

heater;

2) when you have any concerns, questions, or problems

while using this electric water heater.

We will always appreciate your emails, and just as we are

glad that you let us know something had gone wrong.

To access customer service for technical support or

warranty service, please email to rinkmo.service@out-

look.com.

▲ To ensure your own safety and that of others you need

to read the installation and user instruction carefully before

using the unit for the first time; Failure to comply with the

instruction may cause property damage, serious injury, or

death; If you have any questions, contact our company or

the maintenance personnel appointed by our company.

▲ This unit should be installed by a qualified electrician or

plumber in accordance with federal, state and local

electrical and plumbing codes.

▲ When installing or using any high voltage electrical

appliance, basic safety precautions should always be

followed.

▲ DO NOT install this unit in a location where it may be

subject to freezing temperatures. If the water inside your

tankless water heater freezes, it can cause severe and

permanent damage that is not covered under your warranty.

▲ Water temperature over 125°F (52°C) can cause severe

scalding. If the set temperature of the unit is too high, there

is the possibility of hot water scalding. Children, disabled

persons or the elderly in small households may need to set

the temperature of the product below 113°F (45°C) in order

to prevent possible harm caused by hot water.

▲ Where children or persons with limited physical, senso-

ry or mental capabilities are to be allowed to control this

appliance, ensure that this will only happen under supervi-

sion or after appropriate instructions by a person responsi-

ble for their safety. Children should be supervised to

ensure that they never play with the appliance.

▲ This unit has more than one power-supply connection

point. Disconnect all power supplies before servicing.

▲ To avoid damage, the unit needs to be kept dry. Keep

unit away from direct sunlight, moisture, dust, steam, and

other liquids.

The unit do not installed in places with water leaks (such

as under air conditioning lines that might leak or condense

moisture or water pipes ).

▲ Be sure that the water heater are out of the reach of

children so they cannot adjust the temperature knob at will.

▲ The outlet water pipe can get very hot, make sure that

the outlet water pipe is out of the reach of children, and

must be insulated.

▲ This product is only used to heat water, do not use it to

heat other liquids.

▲ Damage caused by water quality is not covered by the

warranty.

▲ Make sure all circuit breakers and disconnect switches

are off before installation and maintenance.

▲ Do not store inflammables and explosives near the

water heater.

▲ Piping that has been treated with boiler seal, chromates,

or other chemicals is not allow to use.

Attentions: This water heater must be connected to a

reliable earth connection at all times.

INSTALLATION INSTRUCTIONS

1. Mark the positions of mounting

holes on the wall as the installation

template shows (Fig. 1).

NOTE: For ease of installation

and servicing, we recommend

that this unit be installed in an up

right position with the inlet and

outlet water connections at the

bottom.

2. Drill 4 mounting holes

(Ø6x32mm) at the marked position

(Fig. 2).

3. Put espansion boltes into the

holes (Fig. 2).

4. Put two screws into the upper two

holes (Fig. 3).

5. Remove the knob on front cover

and 4 screws on the top and

bottom edges of the unit, and then

dismantle the front cover (Fig.4).

BEFORE MOUNTING

* THE UNIT MUST BE INSTALL BY QUALIFIED ELEC-

TRIC ENGINEER

1. The wall for installation of water heater must be firm and

solid and can bear four times the weight of the water

heater.

2. Indoor installation only. Do not install this water heater

near flammable, volatile substances or strong magnetic

fields. The unit must be installed in the vertical position of

the water pipe joint.

3. Be sure that the external power harness and air-opening

meet the standard requirements.

4. Gloves are required during installation.

PRODUCT DIMENSIONS MOUNTING YOUR WATER HEATER

MOUNTING YOUR WATER HEATER

4 7/8"

(124mm)

7 1/8" (180mm)

3 1/8"

(80mm)

5 1/8"

(130mm)

13 1/8" (334mm)

14 1/4" (363mm)

Fig. 4

Fig. 1

Fig. 2 Fig. 3

Knob

Screw

Accessories contents

TOOLS/MATERIALS REQUIRED

(not include)

Measuring tape

Pencil

Phillips

screwdriver

Slotted

screwdriver

Safety gloves

Electric drill

1 installation template4 espansion

boltes

4 screw

st 4.2x30

mounting

hole

espansion

bolte

Screw

espansion

bolte

Wall or other fixed objects that cannot be moved

INSTALLATION LOCATION

There should be a certain space around the machine for

installation and future maintenance.

a (side gap): minimum 12" (305mm)

b (top gap): minimum 15" (381mm)

WALL

7 1/8" (180mm)

5 1/8" (130mm)

14 1/4" (363mm)

WARNING: This unit should be installed by a qualified electrician or plumber in

accordance with federal, state and local electrical and plumbing codes.

WARNING: This water heater must be connected to a reliable earth connection

at all times.

WARNING: Make sure all circuit breakers and disconnect switches are off before

installation and maintenance.

WARNING: DO NOT install this unit in a location where it may be subject to

freezing temperatures. If the water inside your tankless water heater freezes, it can

cause severe and permanent damage that is not covered under your warranty.

The wall for installation of water heater must be firm and solid and can bear four

times the weight of the water heater.

WARNING: Indoor installation only. Do not install this water heater near

flammable, volatile substances or strong magnetic fields. The unit must be

installed in the vertical position of the water pipe joint.

This unit has more than one power-supply connection point. Disconnect all

power supplies before servicing.

WARNING: To avoid damage, the unit needs to be kept dry. Keep unit away from

direct sunlight moisture, dust, steam, and other liquids.

WARNING: The unit do not installed in places with water leaks (such as under

air conditioning lines that might leak or condense moisture or water pipes ).

WARNING: Be sure that the water heater are out of the reach of children so they

cannot adjust the temperature knob at will.

WARNING: The outlet water pipe can get very hot, make sure that the outlet

water pipe is out of the reach of children.

Installation location

There should be a certain space around the machine for

installation and future maintenance.

Wall or other fixed objects that cannot be moved

a (side gap): minimum 12" (305mm)

b (top gap): minimum 15" (381mm)

WALL

SUGGESTION:

WARNING: c (bottom gap): keep a distance out of the

reach of children

7 1/8" (180mm)

5 1/8" (130mm)

14 1/4" (363mm)

WARNING: This unit should be installed by a qualified electrician or plumber in

accordancewith federal, state and local electrical and plumbing codes.

WARNING:This water heater must be connected to a reliable earth connection

atall times.

WARNING:Make sure all circuit breakers and disconnect switches are off before

installationand maintenance.

WARNING:DO NOT install this unit in a location where it may be subject to

freezing temperatures. If the water inside your tankless water heater freezes, it can

cause severe and permanent damage that is not covered under your warranty.

Thewall for installation of water heater must be firm and solid and can bear four

timesthe weight of the water heater.

WARNING: Indoor installation only. Do not install this water heater near

flammable, volatile substances or strong magnetic fields. The unit must be

installed in the vertical position of the water pipe joint.

This unit has more than one power-supply connection point. Disconnect all

power supplies before servicing.

WARNING: To avoid damage, the unit needs to be kept dry. Keep unit away from

direct sunlight moisture, dust, steam, and other liquids.

WARNING: The unit do not installed in places with water leaks (such as under

air conditioning lines that might leak or condense moisture or water pipes ).

WARNING:Be sure that the water heater are out of the reach of children so they

cannotadjust the temperature knob at will.

WARNING: The outlet water pipe can get very hot, make sure that the outlet

waterpipe is out of the reach of children.

Wall or other fixed objects that cannot be moved

a (side gap): minimum 12" (305mm)

b (bottom gap): minimum 15" (381mm)

WALL

Installationlocation

Thereshould be a certain space around the machine for

installationand future maintenance

SUGGESTION:

WARNING: c (bottom gap): keep a distance out of the

reach of children

6. Hang the body on the two

installed screws, then fix the

other two screws.

Tighten all 4 screws to secure the

body.

NOTE: Make sure that the

mounting surface is solid and

firm, and ensure that the unit is

level prior before tighten the

screws (Fig. 5).

7. Reinstall the front cover after

finish “PLUMBING INSTALLA-

TION” and “ELECTRICAL

INSTALLATION”.

Fasten the front cover only after

confirming that the mounting

screws are firm and reliable.

The front cover mounting shows

as right (Fig. 6).

WARNING: The electrical compo-

nents inside the water heater

may cause serious personal

injury or electric shock death.

Make sure that the front cover is

installed correctly and firmly. Do

not remove the front cover unless

installation or maintenance.

8. Screw the front cover to body.

Reinstall the knob (Fig. 7).

PLUMBING INSTALLATION

MOUNTING YOUR WATER HEATER

CAUTION: The plumbing installation must be completed

before the electrical installation.

WARNING: It is the responsibility of the Service Person to

ensure that the water supply to the equipment is provided

with protection against backflow by an air gap as defined

in ANSI/ASME A112. 1.2-1979; or an approved vacuum

breaker or other such method as proved effective by test.

WARNING: Pipe dope or PVC/CPVC primer and glue is

not allowed to used on the threads of the outlet and inlet

fittings. These chemicals can damage the nipples and

cause leaks. Only thread sealing tape can be used.

SUGGESTION: To avoid the property damage caused by

leakage (small probability event), the machine needs to be

installed in place with floor drain.

SUGGESTION: Install a valve (not include) at the inlet

pipe for future maintenance.

SUGGESTION: Install a pressure relief valve between

valve and unit if the inlet water supply pressure exceeds

150 PSI.

Installation Instructions

1. Facing the unit, the outlet located marked on the left

side of the unit connect to the hot water line. The inlet

located marked on the right side of the unit connect to the

cold water line.

8888

Fig. 5

Fig. 6

Fig. 7

Knob

Screw

2. After tightening both fittings at the unit, open the hot

water tap to allowed water run through the unit for about 2

to 3 minutes, to make sure all the air is discharged from the

water lines. This step must be performed before power on.

IF DO NOT FOLLOW THIS STEP CAN CAUSE PERMA-

NENT DAMAGE TO THE HEATING ELEMENTS.

3. Close outlet, open inlet, to check all connections for

water leaks.

Outlet pipe Inlet pipe

Filter*

Screw

* This part is in the Inlet pipe

ELECTRICAL INSTALLATION ELECTRICAL INSTALLATION

Before installing the water heater, make sure that your

home has enough power to handle the maximum current

available for this product.

As with all high-power electrical products, Make sure to

turn off all power to the product directly at the fuse or

breaker box before installing, repairing or disassembling

this water heater.

All circuit protection (breakers) and wiring (wire gauge)

must conform to the US National Electrical Code (NEC) in

the America or Canadian Electrical Code (CEC) in the

Canada .

Failure to comply with these warnings can lead to the

risks include fire, electrical shock and/or death and

void your warranty.

Before starting the electrical installation work, make sure

that all water pipelines have been installed and the main

circuit breaker and power switch have been closed to

prevent electric shock.

CAUTION: Ensure that you have made the correct

connections. You must follow the wire connection as

shown in ensure proper operation of the unit.

WARNING: For supply connections use 8 AWG or larger

wires suitable for at least 160°F (75°C).

WARNING: This product has more than one power-supply

connection point. Disconnect all power supplies before

servicing.

WARNING: The overcurrent protective devices are

provided as a separate assembly, the product shall be

used only with this separate assembly.

WARNING: Firstly turn on the water and let it to run in the

product for several minutes, and exhaust all the air in the

plumbing. At the same time, check whether there is water

leakage at the internal and external water connections of

the product.

WARNING: To avoid a short circuit and damage the circuit

board, make sure all strands are secure inside the terminal

block.

connector

heating

element

heating

element

heating

element

PCB 3

PCB 1

thermal cut-out

t0 t1

flow sensor

temperature

sensor

PCB 2

triac

EI18

EI24

connector

heating

element

heating

element

PCB 3

PCB 1

thermal cut-out

flow

sensor

temperature

sensor

PCB 2

triac

NOTE: The rated voltage is 240VAC. If the connected

power supply is 208VAC, please turn the dial switch

on the display PCB to the upper side with a slotted

screwdriver

Circuit Diagram

Wiring diagram

208VAC

240VAC

8888

208VAC

240VAC

GL2 L1 L2 L1 L2 L1

123456

GL2 L1 L2 L1

1234

EI18 EI24

Circuit Connection

1. Connect each group of power wires to a circuit breaker

in pairs (show as below). Make sure that each circuit

breaker is connected one group of L1 and L2.

EI18 need two circuit breakers.

EI24 need three circuit breakers.

2. When connecting the power cords to the terminal block,

make sure that the wire and the electric conductor inside

the terminal block are in full contact. Then tighten the

screws. If it is loose, May causing electrical short circuit

and/or the terminal block burn out.

Circuit

breaker

Circuit

breaker

Circuit

breaker

GL2 L1 L2 L1 L2 L1

123456

Ground

Circuit

breaker

Circuit

breaker

Ground

GL2 L1 L2 L1

1234

EI18 EI24

3. Again make sure that the wiring from the main circuit

breaker to the water heater is correct. If the wrong wires is

connected, the product will not work normally and may

cause unnecessary danger.

4. Check earth resistance and make sure there is a proper

earth continuity.

5. Confirm that all the air has been purged from the water

lines prior to turning on power to the unit.

8888

OPERATION INSTRUCTIONS TROUBLESHOOTING

Power indicator

Heating indicator

Temperature display

Knob

Power On

When the mains power supply is switched on, the buzzer

beeps once and all the indicators light up for three

seconds and then go out except power indicator. Power

indicator is on green, heating indicator and display screen

are not on.

Operation

1. Press the knob (a beep can be heard) to turn on the

water heater power, the LED display will turn on, it shows

the actual outlet water temperature. Heating indicator is on

red in the state of heating.

Note: The unit will not work and the heating indicator is not

on if there is no water flow, or the water flow do not meets

the start-up requirements (0.66GPM/2.5L/min).

2. If the unit is frequently used and the intermediate

interval is short, initially a short burst of very hot water from

the unit will flow out, wait a few seconds for the water to

cool down to the set temperature when using.

CAUTION: Regularly clean the inlet filter and the shower

head to get enough flow.

PROBLEM ISSUE POSSIBLE CAUSE SOLUTION

Display E1 / E0

Display E2 / E3

Display LL

Inlet temperature

sensor failure.

Inlet temperature lower

than 37°F (3℃)

Unit do not work when inlet

temperature lower than 37°F (3℃).

Display HH Inlet temperature higher

than 176°F (80℃)

Unit do not work when inlet

temperature higher than 176°F

(80℃).

Contact:

[email protected]

Contact:

[email protected]

1. Make sure that the main circuit

breakers that supply the water heater

is on.

2. The unit may be wired error.

3. There may is a problem with the

circuit breaker.

4.Contact:

[email protected]

Outlet temperature

sensor failure.

1. Turn up the setting temperature.

2. Reduce water flow.

3. If the first installation occurs,

please let the electrician check the

wiring carefully. The wiring may be

incorrect.

If not contact:

[email protected]

4. Check the power supply.

5. Replace temperature sensor.

6. Replace heating element.

Water leakage at the

inlet and outlet

connector.

1. The connector is

not installed in place.

2. Seal damage.

1. Tighten the connector.

2. Replace the seal.

The unit does not

work (Power

indicator is NOT on)

Incorrect power wiring

connection or no power.

Water heater is not

heating at all (Power

indicator is on)

Water heater is

working but the outlet

temperature is not

hot well.

1. Low Setting temperature

2. Excessive water flow

3. Faulty wiring

4. Voltage too low.

5. Temperature sensor

failure.

6. Heating element

damaged.

1. Turn down the setting temperature

2. Increase water flow

3. Cut off the power and contact:

[email protected]

Water heater is

heating but the outlet

temperature is too

hot.

1. Temperature set too high.

2. Low water flow

3. PCB failure

Clean themThe outlet flow is

reduced.

Inlet filter,shower or faucet

clogged.

1. No water flow.

2. The flow too small to start

up the unit.

3. Control board failure.

1a. Check the water supply channel;

1b. Clean filter at unit;

1c. Clean faucet aerator or shower

head.

2. Increase water flow.

3. Cut off the power and contact:

[email protected]

Temperature Control

In the state of heating the outlet water temperature can be

adjusted by turning the knob. Turn the knob clockwise to

increase the outlet temperature, and turn the knob coun-

terclockwise to decrease the outlet temperature between

80°F – 140°F (26℃- 60℃), the factory set temperature is

95°F.

When the setting temperature is turned to the maximum or

minimum, it will be not changed and two beeps will be

heard at the same time.

Fahrenheit / Celsius Switch

●The factory set temperature of the unit is Fahrenheit.

● In the state of heating, press the knob for 3 seconds, the

display will switch between Fahrenheit and Celsius.

● When fahrenheit is displayed, the last text shows F.

● When celsius is displayed, the last text shows C.

35C

95f

Fahrenheit display Celsius display

NOTE: When the outlet water temperature reaches 167°F

(75℃) the unit will stop heating.

TECHNICAL SPECIFICATION

Phase Single 60 Hz

Amperage draw

Min. wire size

(copper)

Min. Water Flow

Water connection

Watts

Temp

Rise

EI18Model

@1.5GPM

@2.25GPM

@3.0GPM

3/4"NPT

208V 240V 208V 240V

2x38A2x33A

18.0kW13.5kW

80℉

54℉

40℉

60℉

40℉

30℉

0.66GPM/2.5L/min

Working pressure 150PSI/10BAR

2x8AWG

EI24

3x34A

24.0kW

92℉

73℉

54℉

3x29A

18.0kW

80℉

53℉

40℉

3x8AWG

Voltage

Cod: 0020300897

[email protected]

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