User manual

Tankless electric water heater

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Please read and follow the installation and operation instructions carefully, to ensure the long life and reliable operation of this appliance.

CONTENTS

Important Safety Instructions ------------------------------------------- page 3

Electrical Diagram----------------------------------------------------------- page 5

Technical Data ----------------------------------------------------------page 5

Product Structure------------------------------------------------------------page 6

Installation Guideline-------------------------------------------------------page 7

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

Trouble-Shooting-------------------------------------------------------------page 11

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

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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. Use this water heater only for its intended use as described in this manual.

4. Contact a qualified electrician to have unit properly installed for the models which are not equipped with plug.

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 (excluding the models which are equipped with plug). 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. If there is damage to the wire, you must contact qualified electrician to replace it with dedicated wire from our authorized dealers.

11. Check valve is required to be installed at the water inlet.

12. The water relief valve should work periodically in order to remove calcium carbonate deposits.

13. The drain-pipe which connected to the water relief valve should be installed continuous downward in frostless environment.

WARNING: Do not switch on if there is a possibility that the water in the heater is frozen.

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Product Features

This Mini tankless electric water heater differs from a conventional storage type mini water heaters. It doesn’t store hot water. Instead, water is heated ins tantaneously as it flows through the unit. The powerful heating elements are activated by a flow switch as water is drawn from a main water faucet connected to the appliance. Due to the absence of stand-by loss, the mini has greater energy efficiency than storage type water heaters. The unit are incorporated with multi-safety devices and will continuously supply hot water as long as the faucet is open.

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. High strength ABS splash proof casing, stainless steel heating element.

3. Compact appearance and unlimited supply of hot water.

4. Easy installation, heater can be installed above or under sink. Power cord and plug are equipped

5. Easy operation, the heater provides hot water with constant temperature.

6. Micro-computer control, Adopting patent heating technology. Water is completely separated from electricity by multi-layers of composite nano insulation material.

7. Over temperature protection: when the outlet water temp. reaches or over 65

°C, the appliance will avoid getting scalded and will start to work automatically while temp. drops to a certain temperature.

8. There is a built-in pressure relief valve at the water outlet to prevent explosion.

9. There is overheat protection, dry-heating protection, electricity leakage protection function.

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Electrical Diagram

Model

Voltage

Wattage W

Rated Current A

Min. required circuit breaker A

Min. wire size mm 2

Min. water flow to activate unit L/min

Working pressure

Weight kg

Product Dimensions mm

Water connections

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Technical Data

EcoSink+

3,5 kW

3500

15.2

16

1.5mm

2

EcoSink+

5,5 kW

230VAC

5500

24

32A

2.5mm

2

1.5

0.02-0.6MPa

2.31

265*235*90

G1/2”

EcoSink+ 7 kW

7000

30.4

40A

4mm 2

L

AC220V-

­

240V

Electrical

 

Diagram

Leakage

  sensor

Thermal

 

Cut-

­ out

1

2

T

3

N

E

R

R

R

Temperature

 

Controllor

Temperature

 

Sensor

Flowmeter

Remark ： R:Resistance

   

T ： Triac

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Product Inner Structure

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 appliance can be installed above or under the sink, and unit must only be mounted in a VERTICAL position near by the water fittings. Please electrify try the machine after getting through waterway.

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Installation Method

●

General

The Mini tankless electric water heater can be used for hand washing, kitchen and it can be installed above or under the sink.

●Mounting the unit

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

1 Front and back of the appliance

2 Please remove the metal hanging plate from the back of the appliance.

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3 Put the bracket on the wall, and mark on the wall through the holes,

4 Drill 5 holes of 6.00mm diameter: Put plastic anchor in the holes, then use screw to fix the bracket in the wall.

5 Then fix the appliance with nail in another hole, to make sure the whole appliance is installed on firm.

Fig 5-A: Upward Installation FIG 5-B: Upside down Installation

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●Water Connections

1--- All water pipe must comply with national and applicable state and local water pipe codes.

2--- No matter install the appliance upright or handstand, Please connect the inlet connection (blue arrow points to) to the cold water inlet pipe; connect the outlet connection (red arrow points to) to the hot water outlet pipe .

3---The unit should be connected directly to the main water supply. Flush pipe with water to remove any debris or loose particles. Following pics is for your reference.

4, It is required that use G1/2

”

water connections to fit the appliance. Please connect the inlet and outlet pipe in perspective.

Following pictures are for your reference.

2, 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.

Fig 6-A: Upward Installation FIG 6-B: Upside down Installation

●

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, While fed the cable to terminal blocks/Circuit Breaker, 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.

4, 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. The LED digital display screen will light.

2. Turn on the water faucet for a few minutes until water flow is continuous and all air is drained from water pipes. The unite must be operated after the breaker is turned on.

3. After the unit is supplied with power, please turn on the water and then the appliance will start work. The min water flow to activate the unit is 1.5L/min.

4.Turn off the water flow, the appliance will stop working. It is not necessary to turn off the heater by pressing any key on front panel.

5. Single touch

“ ”

to turn ON/OFF the appliance. When the unit is ON, LED displays setting temperature for 2 seconds, then display the actual outlet water temperature. stop operating for 15 seconds, the screen switch to the screen saver mode. the display screen will be light off. If there is touch to the screen, the screen will light again.

6. Single touch and setting range is 30--55

°C

.

to adjust the outlet temperature. Temperature

⚫ 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.

7. In off mode, touch and at the same time, hold on for 5 seconds, the

LED digital display will be upside down.

8. There is an automatic memory function to avoid repetitive operation, while you turn on the appliance, the default set temperature will be the same as last time set.

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9. There is overheat protection function for the appliance, while the outlet temperature reaches 65

°C, the appliance will enter into pause mode, only after the hot water temp. drop to 50°C, it will start to work again automatically.

10. There is dry heating protection function for the appliance, while the hot water temperature reaches 75°C, the power will be cut off, only after the faults remove.

11. There is real-time leakage detection function, while there is a electricity leakage, the appliance will stop working automatically and E2 appear in LED screen.

12. 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.

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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

6. Outlet water gets smaller and smaller.

7. LED displays E1

10. LED displays E2

Possible Causes

A. Fittings not tight

B. Rubber washer worn-out

A. Power not connected.

B. LED 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.

Inlet strainer or shower clogged.

Outlet temp. is over 75 ℃ .

Corrective Actions

A. Tighten fittings.

B. Change rubber washer.

A. Connect power to the unit.

B. Change LED.

A. Open valve to get water.

B. Open valve to get pressure.

C. Change key or PCB.

A. Set a lower temperature.

B. Increase inlet water flow.

A. Set a higher temperature.

B. Reduce water flow.

Clean strainer and shower.

Electricity leakage

A, Reduce the temperature

B, Turn up the water flow

Please contact with the local dealer

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9. LED displays E3 A, the connecting wire loose. A, Plug in the connecting wire

B, Temperature sensor failure tightly.

B, Replace the temperature sensor

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Normal Maintenance

Note: Do not attempt to repair this water heater yourself, call a service person for assistance. Before these operation, 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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Packing List

Item

Electric Water Heater

Remote control

Rubber plug and screw

Operation and Installation instructions

Unit

Unit

Optional

Piece copy

1

1

Quantity

1

1

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