WINTEMP KGU135 Tankless Water Heater Electric Instruction Manual

Tankless Electric Water Heater
Installation and Instructions Manual

Color: Golden Rose Black
Model No.:
KGU135
KGU65
KGU70

KGU135 Tankless Water Heater Electric

Keep this instuctions manual in a safe place once your unit is installed.
You may need to refer to it for general instructions or future maintenance.
Thank you for purchasing a quality Mini electric water heater manufactured in China. To enjoy your hot water life at its best, please take time to read this manual thoroughly and having done so; keep it handy for future reference.

WARNINGS
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 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

When using electrical appliances, base safety precautions should always be followed including the following:

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. Install or locate this water heater only in accordance with the provided installation instructions.
4. Use this water heater only for its intended use as described in this manual.
5. Contact a qualified electrician to have unit properly installed.
6. 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.
7. 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.
8. 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.
9. Please feel the outlet hot water temperature with hand to make sure it is suitable for showering before taking shower to avoid getting scalded.
10. 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.
11. If there is damage to the wire, you must contact qualified electrician to replace it with dedicated wire from our authorized dealers.
12. CONNECTED ONLY TO A CIRCUIT THAT IS PROTECTED BYA RECOGNIZED GROUND-FAULT CIRCUIT INTERRUPTER(GFCI).
13. CAUTION: FOR HOUSEHOLD AND INDOOR USE ONLY. SAVE THIS INSTRUCTION

Product Features

This Mini tankless electric water heater differs from conventional storage type mini water heaters. It doesn’t store hot water. Instead, water is heated instantaneously as it flows through the unit. The powerful heating elements are activated by a flow switch as water is drawn from a hot water faucet connected to the appliance. Due to the absence of stand-by loss, the mini heater has greater energy efficiency than storage type water heaters. The unit is 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, UL RECOGNIZED heating element.
3. Compact appearance and unlimited supply of hot water.
4. Easy installation, heater can be installed above or under sink. Easy operation, the heater provides hot water with constant temperature.
5. Micro-computer control, adopting patent heating technology. Water is completely separated from electricity by multi-layers of composite nano insulation material.
6. Over temperature protection: when the outlet water temp. reaches or over 167°F (75°C) , the appliance will avoid getting scalded and will start to work automatically while temp. drops to a certain temperature.

Electrical Diagram

3.5kW

6.5kW/7kW

Technical Data

Note: For supply connections, use conductors sized on the basis of Ampacity but rated minimum 167°F (75°C) .
Suitable recognized strain relief means shall be provided when the product installed;
Connected only to a circuit that is protected by recognized ground-fault circuit interrupter (GFCI).

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.

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.
  Fig 1 Front and back of the appliance

Fig 2 Drill two holes of 6.00mm diameter: if you install the heater upright above the sink, the distance between every two holes is 165mm; if you install the heater upside down under the sink, the distance between every two holes is 143mm. Put plastic anchor in the holes.

Fig 3 For Upright Installation, nail in the floor in upper hole (Fig3-A). For Downward Installation, nail in the floor in under hole (Fig3-B), fix the appliance on the wall with the below nail.

Fig 4 Fix the appliance on the wall with the fixed nail:

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

Fig 6 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. 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 pictures are for your reference.
4. It is required that use 1/2″NPT water connections to fit the appliance. Please connect the inlet and outlet pipe in perspective. Following pictures are for your reference.
5. 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. 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.

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.

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. Rotate Knob to adjust the outlet temperature. Temperature setting range is 30-55°C/86-131 °F.
   • 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 hold on for 5 seconds “ ” and then enter user menu selection mode, rotate Knob and LED display “ ” and touch “ ” to confirm the mode: then the LED digital display will be upside down.

8. In off mode, touch and hold on for 5 seconds “ ” and then enter user menu selection mode, rotate Knob to convert the temperature display between fahrenheit degree and degree celsius.

9. There is an adjustable power function, touch and hold on for 5 seconds “ ” and then enter adjustable power setting menu, the default display maximum power is the model of the power machine. Then set the power through the encoder and display the “PXX”, automatically save and exit after 3 seconds.

10. 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.

11. There is overheat protection function for the appliance, while the outlet temperature reaches 149°F (65°C) , the appliance will enter into pause mode, only after the hot water temp. drop to 122°F (50°C) , it will start to work again automatically.

12. There is dry heating protection function for the appliance, while the hot water temperature reaches167°F (75°C) , the power will be cut off, only after the faults remove.

13. 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.

14. Please check hot water with hand before you taking a shower.

Trouble-shooting

B. Change rubber washer.
2. LED no signal| A. Power not connected.
B. LED 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. Increase inlet water flow.
5. Water too cold| A. Low temperature set.
B. Water flow too much.| A. Set a higher temperature.
B. Reduce water flow.
6. Outlet water gets smaller and smaller.| Inlet strainer or shower clogged.| Clean strainer and shower.
7. LED displays El| Outlet temp. is over 167°F (75°C)| A. Reduce the temperature
B. Turn up the water flow
8.LED displays E2| Electricity leakage| Please contact with the local dealer
9. LED displays E3| A. the connecting wire loose.
B. Inlet Temperature sensor failure| A. Plug in the connecting wire tightly.
B. Replace the temperature sensor
10. LED displays E4| A. the connecting wire loose.
B. Outlet Temperature sensor failure| A. Plug in the connecting  wire tightly.
B. Replace the temperature sensor
11.LED displays E5| Heating body surface temperature sensor failure| Replace the temperature sensor

Normal Maintenance

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

Packing List

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