INSTRUCTION MANUAL

ELECTRIC WATER HEATER

HT382E120

Note : Read and understand this manual before use.

Keep this manual for future reference.

240

V

60

Hz

VOLTAJE

FREQUENCY

30~52°C

TEMPERATURE

18Kw

POWER

3.2

L/Min

MINIMUN

WATER FLOWV

CONTENTS

Important Safety Instructions -------------------------------------------------------------------------------- page 2

Electrical Diagram------------------------------------------------------------------------------------------------ page 3

Technical Data and Product Structure----------------------------------------------------------------------page 4

Installation Guideline---------------------------------------------------------------------------------------------page 6

Operation Instructions ------------------------------------------------------------------------------------------page 10

Trouble-shooting---------------------------------------------------------------------------------------------------page 11

Normal Maintenance----------------------------------------------------------------------------------------------page 12

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WARNING

This is not a do-it-yourself project. Failure to have this appliance installed by a licensed plumber and electrician will void all warranties.

Under no circumstances should you attempt to install, repair or disassemble the JNOD tankless electric

water heater without first shutting off all 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.

Important Safety Instructions

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. 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 appliance is not intended for use by persons (include children) with reduced physical sensory or mental capabilities, or lack of experience and knowledge, unless 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 fixed circuit breaker and it must be installed vertically. DO

NOT install this appliance near to tinder or strong magnetic field place.

7. This appliance is forbidden to be switch on if you think it may be frozen, as this could result in serious damage to the unit. Wait until you are sure that it has completely thawed out before you switch it on.

8. Please feel the outlet hot water temperature with hand to make sure it is suitable for showering before taking shower to avoid getting scalded.

9. Before connecting pipes to the water heater hoses, it is extremely important to FLUSH the pipes to wash away all plumbing paste or residue in the pipes.

10. The heating chamber is treated with composite nano insulation material; it is natural if there might be a bit of smell or green blue smoke when the unit is used for the first time.

11. If there is damage to the wire, you must contact qualified electrician to replace it with dedicated wire from our authorized dealers.

12. CAUTION: FOR HOUSEHOLD AND INDOOR USE ONLY

13. Risk of electric shock ,CONNECT ONLY TO A CIRCUIT THAT IS PROTECTED BY A GROUND-

FAULT CIRCUITINTERRUPTER(GFCI).

14.Save this instruction.

3

Product Features

The

JNOD

tankless electric water heaters are incorporated with China national patent technology 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.

3. Overtemperature protection: when the outlet water temp. reaches over 153℉/67 , the electricity will be cut off to avoid getting scalded and the screen displays E1. the appliance will start to work automatically while temp. drop to the set temperature.

4. Malfunction of sensor- when there is malfunction with the temperature sensor, the heater stops working and displays E3

Electrical Diagram

MODEL 625HT382E75

THERMAL CUT-OUT 95

℃

L1

L2

E

OUTLET TEMP.SENSOR

CONTROL

SYSTEM

T1

T2

R1

R2

DISPLAY

SCREEN INLET TEMP.SENSOR

FLOWMETER

MODEL 625HT382E120

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

L1

L2

L1'

L2'

E

THERMAL CUT-OUT 90

℃

CONTROL

SYSTEM

T1 R1

T2 R2

OUTLET TEMP.SENSOR

DISPLAY

SCREEN INLET TEMP.SENSOR

FLOWMETER

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

4

AC 240V/60Hz

■

Technical Data

Model 625HT382E75 625HT382E120

Phase

Voltage V

Wattage kW

Max. Amp. load A

1

240

11

50

Min. required circuit breaker

A

60

Min. wire size AWG cooper

6

Min. water flow to activate

GPM / L/min.

Weight kg

Product Dimensions mm

Water connections NPT

0.53/ 2

3.6

1

240

18

75

2x50

2 X 8

0.85 / 3.2

385x260x93 385x260x93

1/2”

5.3

3/4”

5

UP

DOWN

Product Inner Structure

MODEL 625HT382E75

260mm

Display screen

ON/OFF

MODEL 625HT382E120

260mm

UP

DOWN

Display screen

ON/OFF

Temp.sensor

heating chamber

6 flowmeter

E L1 L2

E L1 L2 L1 L2 bottom case control board

Terminal blocks

Display screen

Display screen

Installation Guideline

The installation must be in compliance with the National Electrical Code, your local electrical and plumbing codes.

1. Make sure the appliance is intact, and the fittings 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 fixed circuit breaker. If you don’t use the heater, please switch off the circuit breaker.

5.

DO NOT install this appliance near to tinder or strong magnetic field place. The unit must only be mounted in a

VERTICAL position near by the water fittings.

7

Installation Method

Fixed installation on the wall

Locate an appropriate place on a section of wall as above mentioned.

Fig 1

Front and back of the appliance

Fig 2

Remove screw which fixed the bracket on back of the appliance.

Fig 3

Remove the bracket from the appliance

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Fig 4 Hold the back bracket hanger in position against the wall and mark the three mounting holes. Drill three holes of 6.00mm diameter, the distance between every two holes is 100mm. (Put plastic anchor in the hole, fix the bracket on the wall. and secure the hanger using the screws supplied or an appropriate alternative method)

.

Fig 5 Uninstall screws on appliance to remove the front cover, Pls use hand to pull out the screen row line plug carefully before removing the front cover.

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Fig 6 Fix the appliance to the bracket which was nailed to the wall, Make sure the unit bracket onto the back metal hanger correctly

E L1 L2 L1 L2 L1 L2

Fig 7 Connect the cable to the terminal blocks, please notice the guidance logo below the terminal blocks. XFJ120FDCH will be connected to one circuit breaker, 625HT382E75, XFJ180FDCH, will be connected to two circuit breakers

E L1 L2 L1 L2 L1 L2

Fig 8 Fix the front cover on appliance, before that, please plug in the screen row line plug. Then nail the screws to fix the front cover.

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Fig 9 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 pipe 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 pipe with water to remove any debris or loose particles

3, It is required that use 1/2”NPT water connections to fit the models of 625HT382E75, use 3/4”NPT water connections to fit the models of 625HT382120

4, 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.

Electrical connection

1, All electrical work must comply with national and applicable state and local electrical codes

2, All unit must be connected to a properly grounded dedicated branch circuit of proper voltage rating.

3, 625HT382E75 can be connected to a single circuit, use a supply cable protected by a double pole breaker

4, 625HT382120, require two independent circuits. Use two supply cables protected by two separate double pole breakers.

5, While fed the cable to terminal blocks, please make sure the metal wire ends and the terminal blocks to touch completely. Then tighten the screws up to make sure the full current can go through.

6, Before beginning any work on the electric installation, be sure that 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.

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Operation Instructions

1. Turn on the circuit breaker to bring electrical power to the unit.

2, Open water faucet for a few minutes until water flow is continuous and all air is purged from water pipes. The unite must be operate after the breakers are turned on.

3. After the unit is supplied with power, a beep sound can be heard and LED lights for 2 seconds, no other display, the appliance keeps standby.

4. Press “ ” to turn ON/OFF the appliance. When the unit is ON, LED displays actual water temperature of the outlet. While the appliance stop working, after 5 seconds, the screen switch to the screen saver. the display screen light will be off. If there is touch to the screen, it will be light again.

5. Press and to adjust the outlet temperature. Temperature setting range is 30--52°C/ 86-125℉.

If the unit has been paused, You may initially get a short burst of very hot water while you turn on again. Please run the water through for a few seconds to let the temperature settle down. Please check hot water with hand before you taking a shower.

If the unit will not be used in winter, drain out water completely so that the heater will not be frozen.

Please periodically clean inlet strainer and the shower to keep a free water flow.

6, Press to convert the temperature display between fahrenheit degree and degree celsius.

7. There is a automatic memory function to avoid repetitive operation, while you turn on the appliance, the default set temp. with be the same as last time set.

Trouble-shooting

Problems

1. Inlet and outlet fittings leaking

2. LED no signal

3. Functional keys not working

4. Water too hot

5. Water too cold

Possible Causes

A. Fittings not tight

B. Rubber washer worn-out

A. Power not connected.

B. LCD damaged.

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.

Corrective Actions

A. Tighten fittings.

B. Change rubber washer.

A. Connect power to the unit.

B. Change LCD.

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.

6. Outlet gets water smaller and smaller.

7. LED displays E1

8. LED displays E3

9. Display overload

Inlet strainer or shower clogged.

Outlet temp. is over 67℃/153℉

Temperature sensor failure

Inlet water flow is too big.

Clean strainer and shower.

A, Reduce the temperature

B, Turn up the water flow

Please contact with your local dealer

Reduce the inlet water flow

NOTE

: should only be performed by qualified electrician. The person who initially installed the unit is the best one to contact for help.

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Normal Maintenance

Note: Do not attempt to repair this water heater yourself. Call a service person for assistance. Always turn off of these operations the power supply needs to be shut off.

It is not required any regular maintenance. However, to ensure consistent water flow, it is recommended following maintenance.

1, periodically remove scale and dirt that may build up at the aerator of the faucet or in the shower head.

2, there is a built in filter screen at inlet connection which should be cleaned from time to time. Please turn off the water flow before doing this.

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