Zip ES3 2.8kW Under Sink Electronic Instant Water Heater Installation Guide

Zip ES3 2.8kW Under Sink Electronic Instant Water Heater

Product Information

Specifications:

• Model Numbers: ES3, ES4, ES6
• Compact electronically controlled instantaneous water heaters
• Intended for hand washing

Product Usage Instructions

Safety Information:
It is crucial to read and follow all safety instructions provided in the manual to avoid potential hazards and ensure proper usage of the product.

Installation:

Requirements: Ensure all installation requirements specified in the manual are met before proceeding with the installation.

Installation Site: Select an appropriate location for installing the water heater according to the guidelines provided.

Shower Application:
If using the water heater for a shower application, make sure to follow the specific instructions outlined in the manual for optimal performance.

Electrical Connection:
Refer to the wiring diagram in the manual for correct electrical connection of the appliance. Always seek professional assistance if needed.

Commissioning:
Follow the commissioning instructions to ensure the water heater is set up and functioning correctly.

Maintenance & Cleaning:
Regular maintenance and cleaning are essential for the efficient operation of the water heater. Refer to the manual for maintenance guidelines.

Fault Finding:
If you encounter any issues with the water heater, refer to the fault finding section in the manual to troubleshoot and resolve common problems.

FAQ

• How often should the outlet unit be de-calcified?
  The outlet unit must be de-calcified regularly as deposits must be removed in regular intervals. Refer to the maintenance section for guidelines on de- calcification.

• What should be done if the hot water temperature is not sufficient?
  If the hot water temperature is not sufficient, it may be necessary to reduce the flow rate through the appliance to increase the hot water temperature. Adjust the flow rate accordingly for desired temperature.

SAFETY INFORMATION

IMPORTANT:
PLEASE READ THESE INSTRUCTIONS CAREFULLY.
NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND CAUTIONS. USE THIS PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONAL INJURY, AND WILL INVALIDATE THE WARRANTY. RETAIN THESE INSTRUCTIONS FOR FUTURE USE.

• WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result in death and/or serious injury and/or property damage.
• CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in property damage.

Safety Information

• WARNINGS
  • Installation, commissioning and maintenance of this appliance must only be carried out by a competent installer who will then be responsible for adhering to all relevant standards and regulations.
  • The appliance must be disconnected from mains power supply before carrying out any work involving live circuits.
  • The appliance must be permanently connected to the supply through an isolating switch with a contact separation of at least 3mm in all poles and be protected by a suitably rated RCD.
  • To protect the appliance, an MCB (miniature circuit breaker) or cartridge fuse must be fitted with a rating suitable for the nomi nal current of the appliance.
  • The cross sectional area of the connection cable must be appropriate for the power rating and location of the appliance. See Technical data, page 7.
  • The connecting cable must be adequately secured.
  • This appliance must be earthed at all times.
  • Check that the power supply is switched off prior to electrical connection.
  • The appliance, its wiring and piping must not be modified in any way.
  • In case of malfunction isolate the power supply immediately. In case of leaks also isolate the water supply. Repairs must only be carried out by a competent person.
  • Temperatures in excess of approximately 43°C are perceived as hot, especially by children, and may cause a feeling of burning.
  • This appliance must not be used by any person (inclu ding children) with limited physical, sensorial or mental abilities or failing experience and/or knowledge unless they are supervised by a person responsible for their safety or have received instructions about how to use the appliance.
  • Children shall not play with the appliance.
  • Cleaning and user maintenance shall not be made by children without supervision.
  • When the appliance has been in use for some time, the fittings may be very hot.
  • If inlet temperature is up to 70°C (eg. fed from a solar supply) mixing with cold water will be required to ensure a safe temperature at the outlet.
  • Optimum operation is ensured at a water flow pressure of 0.2 to 0.4 MPa (2-4 bar). The appliance must not be subjected to pressure exceeding 1.0 MPa (10 bar).
  • The required water resistance may not fall below the value stated on the rating plate at any time.
  • The wall bracket must be secured with the supplied screws and dowels. The ES system must be secured to the wall bracket, and may only be operated if it has been properly mounted on the wall bracket.
  • If the connection cable is damaged , it must be replaced with an original spare cable from Zip, by an authorised technician, in order to avoid any hazards.
• To observe additionally for pressureless installation.
  • The water outlet behind the device must not be blocked, and the water flow must not be restricted.
  • The water outlet facilities, such as shower head, jet control and other outlet unit , must be de-calcified regularly. Deposits must be removed in regular intervals.
  • Only the fittings recommended by Zip may be used.
  • If the ES system is fitted to a shower, (for instance via a preheated water supply), only the shower heads recommended by Zip may be used. No other fittings or appliances which decrease the water flow to the shower may be installed. For advice on the limitations of the ES system for this application, call Zip on 0345 6 005 005.
• CAUTIONS
  • The appliance must only be used when correctly installed and in perfect working order.
  • The appliance must be installed in a frost-free room and must never be exposed to frost.
  • The ES range is not intended for use with thermostatic mixing valves or taps. If thermostatic mixing valves or taps are to be used, their compatibility with the instantaneous water heater must be verified under site operating conditions.
  • The appliance must be completely filled with water before being switched on.
  • Before commissioning for the first time and each time the appliance or the piping system is emptied (e.g. due to work on the plumbing system or maintenance), the appliance must be vented by opening and closing the hot water tap until all air has been eliminated from the water heater and no more air emerges, before re-connecting to the electrical supply.
  • The appliance must only be used for heating wholesome (cat 1) water. The specific water resistance must not fall below the required value indicated on the rating plate. The appliance must not be used for any other purpose.
  • Incoming water temperature must not exceed that stated in Technical data.
  • The Zip InLine is intended for connection to mains supply only. In any other case please contact Zip on 0345 6 005 005 for advice.
  • The temperature of hot water produced by the ES is dependant upon flow rate, supply voltage and incoming water temperature.
  • At times of low incoming water temperature (below 12°C) it may be necessary to reduce the flow rate through the appliance to increase the hot water temperature.
  • Zip Water UK cannot be held liable for any damages caused by failure to observe these instructions.

GENERAL PRODUCT DESCRIPTION

• Zip InLine ES3, ES4 and ES6 instantaneous water heaters are compact electronically controlled instantaneous water heaters for hand washing.
• This small instantaneous water heater is intended to provide economical heating of water for a wash basin when installed together with a sanitary water fitting. When the hot-water tap is opened, the heater switches itself on automatically when the minimum water flow rate is exceeded and heats the water as it passes through the appliance.
• The heater is pre-set in the factory to an outlet temperatu re of about 38°C, which is ideal for hand washing. When this temperature is reached, the electronic regulator reduces the power in order to ensure that the outlet temperature does not exceed this value. This automatic temperature regulation means that it is only necessary to open the hot water tap to obtain water at a constant, safe temperature for washing hands. If the set outlet temperature is not reached, slightly reduce the flow of water from the tap. Cold water may be added if a lower temperature is required.
• If the flow rate is too low or if the hot water tap is closed, the appliance switches itself off automatically. For an optimum flow of water, always fit the special aerator insert supplied with the appliance. This regulator should be inserted into the threaded retainer on the tap outlet.
• The maximum possible outlet temperature is determi ned by the temperature of the incoming water, the flow rate and the heating power of the heater.
• The temperature set point and flow rate can be preset, by an authorised technician, inside the appli ance to achieve an outlet temperature between about 30°C and 43°C.
• Power consumption is also regulated based on outlet temperature to ensure the required temperature is achieved exactly to the degree and irrespective of fluctuations in voltage and water pressure.
• The maximum inlet temperature of 70°C is suitable for use with preheated water e.g. from solar heating systems.

APPROVALS

• Zip InLine ES3, ES4 and ES6 are VDE approved to the LVD and EMC directives and CE endorsed.
• Zip InLine ES3, ES4 and ES6 have been examined, tested and found when correctly fitted to comply with the requirements of the United Kingdom Water Regulations / Byelaws (Scotland). The products are listed under the WRAS (Water Regulations Advisory Scheme) Water Fittings and Materials Directory.

TECHNICAL DATA

Model

|  |

ES3

| Zip InLine

ES4

|

ES6

---|---|---|---|---
Installation|  | Underbasin
Declared load profile|  | XXS
Energy efficiency class (1)|  | A
Energy efficiency (ηwh)(1)| %| 39
Annual electricity consumption (1)| kWh| 478| 475
Thermostat temperature setting| °C| 43
Specific precautions|  | See installation and operating instructions
“Smart” value|  | 0
Sound power level| dB(A)| 15
Rated volume| l| 0.2
Weight empty / full| kg| 1.3/1.5
Nominal supply voltage| V AC| 230
Power rating| kW| 2.8| 4.4| 5.5
Rated current| A| 12| 19| 24
Protection class|  | IP25
Element type|  | Bare wire
Rated pressure| MPa| 1.0
Factory set temperature (2)| °C| 38
Temperature adjustment range| °C| 30-43
Maximum inlet temperature| °C| 70
Factory set flow rate @3 bar| l/min| 2.0| 2.5| 3.3
Switch on flow rate| l/min| 1.2| 1.5
Switch off flow rate| l/min| 1.0| 1.3
Flow rate @ 38°C(3)| l/min| 1.5| 2.4| 3.0
Max temp rise at flows rates shown above| °C| 26.7| 26.2| 26.2
Minimum differential pressure @ 38°C| MPa| 0.020| 0.045| 0.065
Specific water resistance @ 15°C| Ω.cm| >1,100| >800
Packaging dimensions| mm| 225 x 190 x 130
Water connections|  | 1/2” BSP

1. EU Regulation 812/2013, 814/2013
2. Subject to incoming water temperature, flow rate and power available.
3. Based on 12°C supply temperature, 3 bar dynamic pressure and nominal 230V supply voltage.
   All data quoted at nominal supply voltage. Standard European voltage tolerances of -6% to +10% may be applied.
   A minimum water pressure of 0.2 MPa (2 bar) is recommended for optimum performance.

Instantaneous performance calculations

DIMENSIONS

SPARE PARTS

When ordering spare parts, please always specify the appliance model and serial number.

IN80910 Temperature sensor (not shown)

• ZL011 Aerator insert for ES3 and ES4 (not shown)
• ZL010 Aerator insert for ES6 (not shown)

INSTALLATION

Requirement

• These instructions must be read and fully understood before commencing the installation. If in doubt, or in need of further guidance please ring Zip on 0345 6 005 005.
• Zip InLine water heaters must be installed by a competent person familiar with electric instantaneous water heaters.
• Installations must comply fully with UK Water Regulations and any Local Authority requirements.
• The electrical installation including earthing and cross bonding should comply with current IEE regulations and any Local Authority requirements.
• Zip InLine water heaters must be installed according to the specification on the rating plate and the technical specifications.
• Take care to protect the wiring from damage during installation and ensure that the wiring is not directly accessible after installation.
• Check that the power supply is switched off prior to electrical connection.

Installation site

• The installation site must be free from frost at all times.

• For maintenance work, install a shut off valve in the water supply line to the heater.

• The unit should be positioned as close as possible to the outlet to minimise heat loss. The recommended maximum distance is 0.5 metres.

• When considering the location of the heater, consideration should be given to the safe and visible disposal of any water resulting from leaks and seepage. This is particularly relevant when the heater is located in a cupboard or any concealed location. For guidance please call Zip on 0345 6 005 005.

• Hot and cold water connecting pipes should be WRAS approved and of copper or steel construction. Plastic pipes may only be used if conforming to DIN 16893 Series 2. The hot water pipes must be thermally insulated.

• The specific resistance of the supply water must be >1,100Ωcm at 15°C for ES3 and
  800Ωcm at 15°C for ES4 and ES6. The specific resistance can be checked with the local water supply company.

• For safe operation of this instantaneous water heater, a non return valve is not required. If, nevertheless, a non return valve has to be installed, it may only be placed in the hot water outlet line behind the instantaneous water heater.

• The minimum requirements for the required water resistance must be complied with. The required water resistance of the can be obtained from your water supply company.

• For guidance please call Zip on 0345 6 005 005.

Shower application
The hot water temperature may not exceed 55 °C if the ES system is connected to a shower. If the appliance is operated with preheated water, it must be ensured that its temperature is also limited to 55 °C by the customer.

Installing the appliance

• Secure the wall bracket to the wall with screws and wall plugs supplied (Fig. 1).
• Place the appliance on the wall bracket and snap into position (Fig. 2).
  Note This appliance is intended for under-basin installation with the water connections pointing vertically upwards.

To remove the appliance from the wall bracket
Put the flat screwdriver tip into the interlock between the water connections until it stops and lift it slightly upwards (Fig. A), tilt the appliance forward by max. 15° (Fig. B) and remove it upwards (Fig. C).

Plumbing connection (Fig. 3)

• The cold water inlet (blue) and hot water outlet (red) are marked on the rating plate. Connect the appropriate pipes from the tap to the water inlet and outlet accordingly. Avoid exerting any mechanical pressure on the appliance by applying a 13mm spanner on the flats of the inlet and outlet connections when tightening the pipe connectors (Fig.3).
• When supplying mixer taps a non-return valve must be fitted to the hot water outlet and not to the cold water inlet (Fig. 5).
• A flow control valve may be required on the cold supply to the mixer taps to balance the flow (Fig. 5).
• Thoroughly flush the water supply pipes before connection to remove any water borne debris.
• Once the water connections have been made, check for any leaks and rectify as necessary.
• In order to obtain an optimum water jet at low flow rates, always screw the aerator insert supplied with the unit onto the tap outlet. This insert fits commercially available sleeves with an M22 or M24 thread.

Typical installation

• Fig. 4 shows open vented installation.
• Fig. 5 show unvented installation with closed outlet tap.

ELECTRICAL CONNECTION

Electrical connection
Do not switch on the electric power at this time.

Installation must be carried out by a competent electrician.
The electrical installation including earthing and cross bonding should comply with current IEE regulations and any Local Authority requirements.
IMPORTANT The appliance must be installed according to the specification on the rating plate and the technical specifications. Ensure that the voltage marked on the appliance matches the power supply.
WARNING: Check that the power supply is switched off prior to electrical connection!

Wiring Diagram

1. Electronic regulator
2. Safety thermal cut-out
3. Heating element

COMMISSIONING

CAUTION
To prevent damage to the appliance, the instantaneous water heater must be purged of air before using it for the first time

Purging

• Before turning on the electrical supply, open and close the hot water tap until the water runs smoothly and no more air emerges.
  Note Every time the appliance is drained (e.g. after work on the plumbing system, if there is a risk of frost or following repair work), the heater must be purged in this way before reconnecting the power supply.
  WARNING! This appliance must be earthed

  • Turn on the electrical supply, after a short power up delay the water heats up.
  • Check everything is working as it should and the water temperature is achieving the desired temperature. If not follow the guide on pages 15/16.
    Note When used to supply a mixer tap a flow restrictor may be required on the cold supply to the tap to balance the flows.

• For further information see the Fault Finding table, page 19.

• When the unit has been commissioned, explain the functions of the heater to the end user and ensure they know how to use the appliance.

• Hand over these instructions for the user to keep.

Removing the cover (Fig. 7)

• The rating plate and the hood screw are located under this cover.
  • Push the cover back towards the wall bracket.
  • At the rear corners press the cover down until the front edge lifts.
  • Remove the cover by pulling forward.
• The underside of the cover (Fig. 8) is the data plate and displays model type, serial number etc.

Replacing the cover (Fig. 9)

• Push the cover towards the wall bracket under the edges of the water connections.
• Press down the front edge of the cover and move it forward again until it clips into place.

Temperature & flow adjustment (to be undertaken by an authorised technician only)
The factory setting is 38°C. A maximum outlet temperature may be set between 30°C and 43°C. Water too hot

• If the water is too hot reduce the temperature on the appliance by turning the potentiometer (Fig.10, page 16) anticlockwise instead of mixing with cold water.
• Any cold water added is not controlled by the electronic circuitry meaning that precise temperature control can no longer be guaranteed.
  Note Adding cold water wastes the energy used to heat it! This unit is not intended for use with a ‘thermostatic mixing valve’or tap.

Water too cold
May only be carried out by an authorised technician, call Zip on 0345 6 005 005.
Remove the cover (see Fig. 7), undo the hood screw underneath and remove the hood.

• Increase the temperature by turning the potentiometer clockwise until the desired temperature is achieved.
• If the desired temperature cannot be achieved the red LED on the PCB will light (constant) to show that the unit cannot achieve the preset temperature. (See LED functions on page 18).
• In this case it will be necessary to adjust the water flow through the unit.
• The flow rate can be adjusted with the adjustment screw (Fig. 11).
• Turning this screw clockwise reduces the flow rate; turning it anti-clockwise increases the flow rate.
• Turn the adjustment screw clockwise; reducing the flow rate until the desired temperature is achieved.

MAINTENANCE

General cleaning

• Plastic surfaces and fittings should only be wiped with a damp cloth. Do not use abrasive or chlorine-based cleaning agents or solvents.

• The outlet fittings (special tap aerators and shower heads) should be unscrewed and cleaned at regular intervals.

• The electrical and plumbing components should be inspected at least every 3 years by a competent person familiar with instantaneous water heaters, to ensure proper functioning and operational safety . Water quality should be considered when determining the frequency of inspection.
  Note Maintenance work must only be carried out by a competent person familiar with instantaneous water heaters.

• Outlet fittings (aerator insert Fig. 5 page 13) should be unscrewed from the tap nozzle and cleaned at regular intervals.

  • Rinse the regulator with water and brush off the debris. For difficult to remove deposits, soak in white vinegar (or a proprietary scale cleaner) for a few minutes and scrub with a toothbrush.
  • If any parts are cracked or broken, replace them. If the washer has hardened, it should be replaced.
  • With the debris cleaned out, screw the regulator back into the tap. Hand tightening should be adequate.

REPAIRS

• Repairs should only be carried out by competent persons familiar with electric instantaneous water heaters.
• All service work should be performed by an authorized Zip service engineer – for details of the full range of services available call Zip on 0345 6 005 005.
• When calling for service, please always specify the appliance model and serial number.
• The fault finding table on page 19 will be helpful in determining the causes of some common problems and their solutions.

LED Functions

Green LED

Green LED flashing| Standby mode
Green LED constantly on| Appliance is heating water
Red LED
Red LED constantly on| The required outlet temperature cannot be achieved at maximum power
Red LED flash code
Long- short-long-short-long| Heating element defective
Long-short-short-short| Temperature sensor faulty
Long-short-long| Air bubble in system

FAULT FINDING

off valve

Water flows more slowly than expected

| The aerator insert is not fitted| Fit the correct aerator insert, see Fig. 5
Water pressure is not sufficient| Check the water flow pressure, authorised technician to check the water flow

adjustment, see Fig. 11

Dirt in the pipes| Remove any dirt from the filter, valves and / or taps
The heater switches itself on and off| Water pressure is varying, flow rate is too low| Remove any dirt, increase the flow water pressure, close other taps, open the shut off valve further

Water remains cold

| ****

Water pressure is not sufficient

| Authorised technician to adjust the water flow see Fig. 11

Open the shut-off valve

Fit the correct aerator insert, see Fig. 5 Check water pressure

Dirt in the inlet or outlet| Remove dirt from the inlet and outlet
Temperature sensor defective| Replace temperature sensor (authorised technician)
Heating element defective| Replace heating element (authorised technician)
Hot water temperature varies| Supply voltage varies| Check the supply voltage
Water connections reversed| Check installation

Hot water temperature too low & 1 LED flashes

| Flow rate is too high| Adjust the flow rate, see Fig. 11 (authorised technician only)
Inlet temperature is too low| Adjust temperature potentiometer, see Fig. 10 (authorised technician only)

If the connection cable is damaged, it must be replaced with an original spare cable from Zip by an authorised technician in order to avoid any hazards.
If you cannot rectify the fault with the aid of the troubleshooting table, please contact Zip customer service on 0345 6 005 005.

END OF LIFE DISPOSAL

• The use of this crossed out wheeled bin logo indicates that this product needs to be disposed of separately to any other household waste.
• Within each of the European Union member countries, provisions have been made for the collection and recycling of unwanted electrical and electronic equipment.
• In order to preserve our environment we ask that you dispose of this product correctly. Please contact Zip Customer Service for advice on 0345 6 005 005.

WARRANTY

• The Zip appliance you have chosen is precision-built from the finest materials available and should give many years of trouble free service.

• Certain warranties may be implied by law into your contract with Zip. The warranty provided below is additional to these implied warranties and nothing set out below shall limit your statutory rights or rights at law.

• Zip Water UK warrants that, should any part fail within 12 calendar months of installation, that part will be repaired or replaced free of charge by Zip or its Distributor or Service Provider, except as set out below, provided the appliance is installed and used strictly in accordance with the instructions supplied, and that failure is not due to accident, misuse, abuse, unsuitable water conditions, or to any alteration, modification or repair by any party not expressly nominated by Zip.

• No costs are payable by the customer other than any mileage or travelling-time charges incurred by a Zip Service Provider or the cost of removal, cartage and re-installation of any component of the appliance if it needs to be returned for repair to Zip or its Distributor.

• This warranty does not cover damage resulting from non-operation of the appliance or consequential damage to any other goods, furnishings or property.

• Zip does not exclude, restrict or modify any liability that cannot be excluded, restricted or modified or which cannot, except to a limited extent, be excluded, restricted or modified as between the owner or user and Zip under the laws applicable.

• Furthermore, this warranty does not displace any statutory warranty, but, to the extent to which Zip is entitled to do so, the liability of Zip under any statutory warranty will be limited at Zip’s option to the replacement of the appliance or supply of equivalent appliance, the payment of the cost of replacing the appliance or acquiring an equivalent appliance, or the payment of the cost of having the appliance repaired or the repair of the appliance.
  Note It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.

• To ensure you have the latest revision of this instruction manual, please visit www.zipwater.co.uk to download the latest copy.
  IMPORTANT No liability is accepted for incorrect use of this product.

ABOUT COMPANY

• Zip Water UK
• 14 Bertie Ward Way, Dereham, Norfolk NR19 1TE 0345 6 005 005
• sales@zipindustries.co.uk
• www.zipwater.co.uk
• TECHNICAL SUPPORT
  • TEL: 0345 6 005 005
  • EMAIL: SERVICE@ZIPINDUSTRIES.CO.UK
  • WWW.ZIPWATER.CO.UK

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