Westinghouse HT382E120 User manual

INSTRUCTION MANUAL
HT382E120
ELECTRIC WATER HEATER
Note : Read and understand this manual before use.
Keep this manual for future reference.
30~52°C
TEMPERATURE
18Kw
POWER
VOLTAJE
FREQUENCY
240 V
60 Hz
3.2
L/Min
MINIMUN
WATER FLOWV

2
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

3
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 pipesto 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 istreated 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. Ifthere 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.

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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
MODEL 625HT382E120
L1
L1'
T1
T2
R1
R2
L2
E
THERMAL CUT-OUT 90 ℃
CONTROL
SYSTEM
DISPLAY
SCREEN INLET TEMP.SENSOR
FLOWMETER
OUTLET TEMP.SENSOR
REMARK: J:RELAY R:HEATING SYSTEM T:TRIAC
L2'
L1
T1
T2
R1
R2
L2
E
THERMAL CUT-OUT 95 ℃
CONTROL
SYSTEM
DISPLAY
SCREEN INLET TEMP.SENSOR
FLOWMETER
OUTLET TEMP.SENSOR
REMARK: J:RELAY R:HEATING SYSTEM T:TRIAC

5
AC 240V/60Hz
■Technical Data
Model 625HT382E75 625HT382E120
Phase 1 1
Voltage V 240 240
Wattage kW 11 18
Max. Amp. load A50 75
Min. required circuit breaker
A 60 2x50
Min. wire size AWG cooper 6 2 X 8
Min. water flow to activate
GPM /L/min. 0.53/ 2 0.85 / 3.2
Weight kg 3.6 5.3
Product Dimensions mm 385x260x93 385x260x93
Water connections NPT 1/2”3/4”

6
Product Inner Structure
MODEL 625HT382E75
MODEL 625HT382E120
260mm
285mm
E L1 L2
Display screen
Display screen
UP ON/OFF
DOWN
E L1 L2 L1 L2
bottom case
control board
Display screen
Terminal blocks
flowmeter
Temp.sensor
heating chamber
Display screen
UP ON/OFF
DOWN
260mm
285mm

7
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.

8
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

9
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 inthe 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
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
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.
E L1 L2 L1 L2 L1 L2
E L1 L2 L1 L2 L1 L2

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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
NOTE: should only be performed by qualified electrician. The person who initially installed the unit is the best one to contact for help.
Problems Possible Causes Corrective Actions
1. Inlet and outlet fittings leaking A. Fittings not tight
B. Rubber washer worn-out
A. Tighten fittings.
B. Change rubber washer.
2. LED no signal A. Power not connected.
B. LCD damaged.
A. Connect power to the unit.
B. Change LCD.
3. Functional keys not working A. No water out from shower.
B. Water pressure too low.
C. Key or PCB damaged.
A. Open valve to get water.
B. Open valve to get pressure.
C. Change key or PCB.
4. Water too hot A. Too high temperature set.
B. Water flow too small.
A. Set a lower temperature.
B. Open valve bigger.
5. Water too cold A. Low temperature set.
B. Water flow too much.
A. Set a higher temperature.
B. Reduce water flow.
6. Outlet gets water smaller and
smaller. Inlet strainer or shower clogged. Clean strainer and shower.
7. LED displays E1 Outlet temp. is over 67℃/153℉A, Reduce the temperature
B, Turn up the water flow
8. LED displays E3 Temperature sensor failure Please contact with your local dealer
9. Display overload Inlet water flow is too big. Reduce the inlet water flow

13
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.