Stiebel Eltron ESH 5 U-N Open Vented Small Water Heater Instruction Manual

June 13, 2024
STIEBEL ELTRON

Stiebel Eltron ESH 5 U-N Open Vented Small Water Heater

Stiebel Eltron ESH 5 U-N Open Vented Small Water
Heater

SPECIAL INFORMATION

  • The appliance may be used by children over 3 years of age and persons with reduced physical, sensory or mental capabilities or a lack of experience and expertise, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the potential risks. Children aged 3 to 8 years are only allowed to operate the tap connected to the appliance. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.
  • When permanently connected to the power supply using a dedicated junction box, the appliance must be able to be isolated from the mains power supply by an isolator that disconnects all poles with at least 3 mm contact separation.
  • The power cable may only be replaced (for example if damaged) by a qualified contractor authorised by the manufacturer, using an original spare part.
  • Never connect the appliance via a time switch.
  • Secure the appliance as described in chapter “Installation / Installation”.
  • During heating, expansion water drips from the tap outlet.
  • The appliance must only be installed with an open (non-pressurized) tap.
  • Never subject the appliance to water pressure.
  • The tap outlet has a vent function. Scale build-up can block the outlet and subject the appliance to pressure.
  • Never seal the tap outlet.
  • Only use special aerators for non-pressurized water heaters.
  • Never extend the tap outlet with a hose.
  • Drain the appliance as described in chapter “Installation / Maintenance / Draining the appliance”.

OPERATION

General information

The chapters “Special information” and “Operation” are intended for both users and qualified contractors.
The chapter “Installation” is intended for qualified contractors.

Note
Read these instructions carefully before using the appliance and retain them for future reference. Pass on the instructions to a new user if required.

Safety instructions

Structure of safety instructions

KEYWORD Type of risk

Here, possible consequences are listed that may result from failure to observe the safety instructions.

  • Steps to prevent the risk are listed.

Symbols, type of risk

Symbol

|

Type of risk

---|---
| Injury
| Electrocution
| Burns (burns, scalding)

Keywords

KEYWORD Meaning
DANGER Failure to observe this information will result in serious injury or

death.
WARNING| Failure to observe this information may result in serious injury or death.
CAUTION| Failure to observe this information may result in non-serious or minor injury

Other symbols in this documentation

Note
General information is identified by the adjacent symbol.
Read these texts carefully.

Symbol

|

Meaning

---|---
Symbol| Material losses (appliance damage, consequential losses and environmental pollution)
| Appliance disposal

  • This symbol indicates that you have to do something. The action you need to take is described step by step.

Units of measurement

Note
All measurements are given in mm unless stated otherwise.

Safety

Intended use

This open vented (non-pressurized) appliance is designed for heating domestic hot water. The appliance can supply one draw-off point.

The appliance is intended for domestic use. It can be used safely by untrained persons. The appliance can also be used in non-domestic environments, e.g. in small businesses, as long as it is used in the same way.

Any other use beyond that described shall be deemed inappropriate. Observation of these instructions and of the instructions for any accessories used is also part of the correct use of this appliance.

General safety instructions

WARNING Burns During operation, the tap can reach temperatures in excess of 60 °C. There is a risk of scalding at outlet temperatures in excess of 43 °C.

WARNING Injury Only a qualified contractor is permitted to remove the temperature selector.

WARNING Injury
The appliance may be used by children over 3 years of age and persons with reduced physical, sensory or mental capabilities or a lack of experience and expertise, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the potential risks. Children aged 3 to 8 years are only allowed to operate the tap connected to the appliance. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.

Where children or persons with limited physical, sensory or mental abilities are allowed to use this appliance, we recommend a permanent temperature limit. A qualified contractor can set this limit.

Symbol Material losses
The user should protect the appliance and its tap against frost.

Symbol Material losses
Never subject the appliance to water pressure. The tap outlet has a vent function. Scale build-up can block the outlet and subject the appliance to pressure.

  • Never seal the tap outlet.
  • Only use special aerators for non-pressurized water heaters.
  • Never extend the tap outlet with a hose.

SymbolMaterial losses

Connecting the appliance via a time switch will cause an unintentional reset of the high limit safety cut-out.

  • Never connect the appliance to the power supply via a time switch.

Test symbols

See type plate on the appliance.

Appliance description

This open vented (non-pressurised) appliance constantly maintains the water content at the pre-selected temperature. During heating, expansion water drips from the tap.

The appliance may only be installed with taps for open vented (non- pressurised) water heaters (see chapter “Installation / Appliance description / Accessories”). Subject to season, varying cold water temperatures can result in different maximum amounts of mixed outlet water.

Thermos top function

The thermos top function (thermal separation) of the ESH 5 U-N Trend prevents the tap becoming hot in standby mode.

Operation

You can set any required DHW outlet temperature variably at the temperature selector. The heat-up indicator illuminates during the heat-up process.

Operation

  1. Heat-up indicator
  2. Temperature selector
    Depending on the system, the actual temperatures may vary from the set value.
    • Cold. On this setting, the appliance is protected from frost.
    The tap and the water line are not protected.
    E Approx. 40 °C
    e Recommended energy saving setting (approx. 60 °C), minor scaling

Note
A qualified contractor can set a temperature limit on the appliance (see chapter “Installation / Settings / Setting the temperature limit”).

Cleaning, care and maintenance
  • Never use abrasive or corrosive cleaning agents. A damp cloth is sufficient for cleaning the appliance.
  • Check the tap regularly. You can remove limescale deposits at the tap outlet using commercially available descaling agents.

Almost every type of water will deposit limescale at high temperatures. This settles inside the appliance and affects both performance and service life. The heating elements should therefore be descaled if necessary. A qualified contractor who is aware of the local water quality will tell you when the next descaling is due.

Troubleshooting

Problem

| Cause|

Remedy.

---|---|---
The appliance does not supply hot water.| The temperature selector is set to “•”..| Switch the appliance ON by turning the temperature selector.
No power at the appliance.| Check the plug / fuses in the distribution board.
Water can only be drawn at a reduced rate.| The aerator in the tap is scaled up.| Descale / replace the aerator.
Loud boiling noises inside the appliance.| The appliance is scaled up.| Have the appliance descaled by a qualified contractor.

If you cannot remedy the fault, contact your qualified contractor. To facilitate and speed up your enquiry, please provide the serial number from the type plate (000000-0000-000000).

INSTALLATION

Safety

Only a qualified contractor should carry out installation, commissioning, maintenance and repair of the appliance.

General safety instructions

We guarantee trouble-free function and operational reliability only if original accessories and spare parts intended for the appliance are used.

Instructions, standards and regulations

Note
Observe all applicable national and regional regulations and instructions.

Appliance description

The appliance is intended to heat cold water for supplying a single draw-off point.

ESH 5 U-N Trend
The open vented (non-pressurised) appliance is only suitable for undersink installation.

ESH 5 O-N Trend
The open vented (non-pressurised) appliance is suitable only for oversink installation.

Standard delivery

The following are delivered with the appliance:
– Wall mounting bracket

Accessories

The following taps are available as accessories for open vented operation:

Mixer taps
– WST, WUT

Mono-lever mixer taps
– MEW, MES, MEWC

Sensor tap
– WEN

Preparation
  • Flush the water line thoroughly.

Water installation

No safety valve is required.

Taps

Sealed unvented taps are not permitted.

  • Install a tap for open vented operation.

Installation site

SymbolMaterial losses
Install the appliance in a room free from the risk of frost.

SymbolMaterial losses
Mount the appliance on the wall. The wall must have sufficient load bearing capacity.

Note
Ensure that the appliance is freely accessible for maintenance work.

Always install the appliance vertically and near the draw-off point.

ESH 5 U-N Trend – undersink installation

SymbolMaterial losses
The ESH 5 U-N Trend is designed exclusively for undersink installation. The water connections of the appliance are at the top.

Installation
Installation

ESH 5 O-N Trend – over sink installation

SymbolMaterial losses
The ESH 5 O-N Trend is designed exclusively for over sink installation. The water connections of the appliance point downwards.

Installation

SymbolMaterial losses
Connecting hose length (from tap to appliance) may not exceed 1 m.

For connecting hoses > 1 m:

  • Install a tube aerator attachment in the overflow line.
Installation

Appliance installation

  • Mark out the holes to be drilled on the wall (see chapter “Installation / Specification / Dimensions and connections”).
  • Drill the holes and insert suitable rawl plugs.
  • Secure the wall mounting bracket using suitable screws.
  • Hang the appliance on the wall mounting bracket.

Water connection

Symbol Material losses
Carry out all water connection and installation work in accordance with regulations.

SymbolMaterial losses

The appliance may develop a leak and cease functioning.

  • Never subject the appliance to water pressure.
  • Never interchange the water connections.
  • Set the flow rate (see tap instructions). Observe the maximum permissible flow rate with a fully opened tap (see chapter “Installation / Specification / Data table”).

SymbolMaterial losses
When tightening the fittings, counterchord with a suitable spanner.

ESH 5 U-N Trend

Installation

Match up the colour coding on the tap water connections and the appliance:

  • R.h. side blue = “Cold water inlet”
  • L.h. side red = “DHW outlet”
    • Secure the water connections from the tap to the appliance.

Note
Ensure that the water connections are not kinked during installation. Prevent any tensioning during installation.

ESH 5 O-N Trend

Installation

  • Secure the water connections from the tap to the appliance.

Electrical connection

WARNING Electrocution
Carry out all electrical connection and installation work in accordance with relevant regulations.

WARNING Electrocution
When permanently connected to the power supply using a dedicated junction box, the appliance must be able to be isolated from the mains power supply by an isolator that disconnects all poles with at least 3 mm contact separation.

WARNING Electrocution
Ensure that the appliance is earthed.

Material losses

The voltage specified on the type plate must match the mains voltage.

  • Observe the type plate.

The following electrical connections are permissible:

|

ESH 5 U-N Trend

|

ESH 5 O-N Trend

---|---|---
Connection to a freely accessible standard socket with matching plug| X| X
Permanent connection to an appliance junction box with earth conductor| X| X

Commissioning

WARNING Electrocution
Commissioning may only be carried out by a qualified contractor in accordance with safety regulations.

Initial start-up

Installation

  • Either open the DHW valve of the tap or set the mono lever mixer tap to “hot” until the water that flows out is free of air bubbles.
  • Turn the temperature selector to the maximum temperature.
  • Insert the plug into the standard socket or set the fuse/MCB in the distribution board.
  • Check the entire hydraulic installation for tightness.
  • Check the appliance function. Ensure that the temperature controller switches off.

Note
If you fail to follow the correct sequence (first water, then power), the high limit safety cut-out will trip. Proceed as follows:

  • Disconnect the appliance from the power supply.
  • Fill the appliance with water.
  • Connect the appliance to the power supply

Appliance handover

  • Explain the functions of the appliance to the user. Show the user how to operate the appliance.
  • Make the user aware of potential dangers, especially the risk of scalding.
  • Hand over these instructions and, if applicable, the instructions for any accessories.

Recommissioning

See chapter “Installation / Commissioning / Initial start-up”.

Settings

Setting the temperature limit

Installation

  1. Limiting ring
  2. Temperature selector

Placing the limiting ring behind the temperature selector allows you to limit the setting range of the temperature selector to a specific maximum temperature.

  • Turn the temperature selector to zero (fully anti-clockwise to “•”).
  • Pull off the temperature selector and the limiting ring.
  • Push the limiting ring with the required maximum setting onto the controller shaft.
  • Install the temperature selector set to zero (•).
Appliance shutdown
  • Isolate the appliance from the power supply by removing the plug or by tripping the MCB in the distribution board.
  • Drain the appliance (see chapter “Installation / Maintenance / Draining the appliance”).
Troubleshooting

Fault

| Cause|

Remedy

---|---|---
The appliance does not supply hot water| The high limit safety cut-out has tripped.| Remedy the cause of the fault. If necessary, replace the temperature controller. Allow the appliance to cool down. If you have isolated the appliance from the power supply, the high limit safety cut-out will be reset automatically.
The flanged immersion heater is faulty.| Replace the flanged immersion heater.
Loud boiling noises inside the appliance| The appliance is scaled up.| Descale the appliance.

Maintenance

WARNING Electrocution
Before any work on the appliance, disconnect all poles of the appliance from the power supply.

  • Dismantle the appliance for maintenance work.

Draining the appliance

WARNING Burns
Hot water may escape during draining.

  • Drain the appliance via its connectors.

Opening the appliance

Installation

  • Pull off the temperature selector and the limiting ring.
  • Remove the screws from underneath the temperature selector.
  • Open the appliance cover by lowering the bolt screws inwards and pivot the cover upwards, then remove it.

Descaling the appliance

SymbolMaterial losses
Never treat the cylinder surface with descaling agents.

  • Remove the flanged immersion heater.
  • Carefully tap the heating element to remove coarse limescale deposits.
  • Immerse the heating element up to the flange plate in descaling agent.

Replacing the power cable

The power cable must only be replaced by a qualified contractor with an original spare part. Alternatively, the H05VV-F3x1.0 cable may be used.

Checking the earth conductor

  • Pull off the temperature selector and the limiting ring.
  • Check the earth conductor (in Germany DGUV V3 for example) across a temperature controller fixing screw and the earth conductor contact of the power cable.

Positioning the temperature sensor in its protective pipe

  • When replacing the temperature controller, guide the temperature sensor into its protective pipe.
  • Secure the temperature sensor in place below the earthed plug.
    Installation
Specification

Dimensions and connections

Dimensions

ESH 5 U-N Trend

c01 Cold water inlet| Male thread| G 3/8 A
c06 DHW outlet| Male thread| G 3/8 A
i13 Wall mounting bracket| |

ESH 5 O-N Trend

Dimensions

ESH 5 O-N Trend

c01 Cold water inlet| Male thread| G 1/2 A
c06 DHW outlet| Male thread| G 1/2 A
i13 Wall mounting bracket| |

Wiring diagram

1/N/PE ~ 230 V

Dimensions

Heat-up diagram

The heat-up period depends on the degree of scaling and residual heat. For the heat-up time for a cold water supply at 10 °C and a maximum temperature setting, see the diagram.

Dimensions

x Temperature in °C
y Duration in min

Country-specific approvals and certifications

See the type plate for test symbols.

Extreme operating and fault conditions

In the case of faults, a peak temperature of up to 100 °C may briefly occur in the system.

Energy consumption data

Product datasheet: Conventional water heaters to regulation (EU) no. 812/2013 and 814/2013

| ESH 5 U-N Trend| ESH 5 O-N Trend
---|---|---
| 201386| 201388
Manufacturer| STIEBEL ELTRON|
Load profile| XXS| XXS
Energy efficiency class| A| A
Energy conversion efficiency %| 38| 37
Annual power consumption kWh| 489| 494
Default temperature setting °C| 55| 55
Sound power level dB(A)| 15| 15
Daily power consumption kWh| 2.267| 2.295

Data table

| |

ESH 5 U-N Trend

|

ESH 5 O-N Trend

---|---|---|---
| | 201386| 201388
Hydraulic data| | |
Nominal capacity| l| 5| 5
Mixed water volume at 40 °C| l| 10| 10
Electrical data| | |
Rated voltage| V| 230| 230
Rated output| kW| 2| 2
Rated current| A| 8.7| 8.7
Fuse protection| A| 10| 10
Phases| | 1/N/PE| 1/N/PE
Frequency| Hz| 50/60| 50/60
Application limits| | |
Temperature setting range| °C| 35-85| 35-85
Max. permissible pressure| MPa| 0| 0
Max. flow rate| l/min| 5| 5
Energy data| | |
Standby energy consumption/24 h at 65 °C| kWh| 0.27| 0.27
Energy efficiency class| | A| A
Versions| | |
IP rating| | IP 24 D| IP 24 D
Under sink installation| | X|
Over sink installation| | | X
Type| | Open vented| Open vented
Inner cylinder material| | PP| PP
Thermal insulation material| | EPS| EPS
Casing material| | PS| PS
Colour| | White| White
Connections| | |
Water connection| | G 3/8 A| G 1/2 A
Dimensions| | |
Height| mm| 415| 415
Width| mm| 252| 252
Depth| mm| 233| 233
Weights| | |
Weight| kg| 3.1| 3.1

Guarantee

The guarantee conditions of our German companies do not apply to appliances acquired outside of Germany. In countries where our subsidiaries sell our products a guarantee can only be issued by those subsidiaries. Such guarantee is only granted if the subsidiary has issued its own terms of guarantee. No other guarantee will be granted.

We shall not provide any guarantee for appliances acquired in countries where we have no subsidiary to sell our products. This will not affect warranties issued by any importers.

Environment and recycling

We would ask you to help protect the environment. After use, dispose of the various materials in accordance with national regulations.

CUSTOMERSD SUPPORT

Deutschland
STIEBEL ELTRON GmbH & Co. KG
Dr.-Stiebel-Straße 33 | 37603 Holzminden
Tel. 05531 702-0 | Fax 05531 702-480
info@stiebel-eltron.de
www.stiebel-eltron.de

Verkauf Tel. 05531 702-110 | Fax 05531 702-95108 | info-center@stiebel- eltron.de
Kundendienst Tel. 05531 702-111 | Fax 05531 702-95890 | kundendienst @stiebel-eltron.de
Ersatzteilverkauf Tel. 05531 702-120 | Fax 05531 702-95335 | ersatzteile @stiebel-eltron.de

|ESH 5 U-N Trend | ESH 5 O-N Trend www.stiebel-eltron.com

Australia
STIEBEL ELTRON Australia Pty. Ltd.
294 Salmon Street | Port Melbourne VIC 3207
Tel. 03 9645-1833 | Fax 03 9644-5091
info@stiebel-eltron.com.au
www.stiebel-eltron.com.au

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References

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