STIEBEL ELTRON SNU 5 SL antitropf comfort Technisches Datenblatt

BEDIENUNG UND INSTALLATION

OPERATION AND INSTALLATION

UTILISATION ET INSTALLATION

GEBRUIK EN INSTALLATIE

OBSLUHA A INSTALACE

OBSŁUGA I INSTALACJA

HASZNÁLATI ÉS TELEPÍTÉSI ÚTMUTATÓ

ЭКСПЛУАТАЦИЯ И МОНТАЖ

Offener (druckloser) Warmwasser-Kleinspeicher | Open vented (non-pressurised)

small water heater | Mini-ballon d’eau chaude à écoulement libre | Open

(drukloze), kleine warmwaterboiler | Malý beztlakový zásobník teplé vody |

Otwarty (bezciśnieniowy) mały pojemnościowy ogrzewacz wody | Nyitott rendszerű

(nyomásmentes) kisméretű melegvíztároló | Открытый (безнапорный) компактный

накопительный водонагреватель

» SNU 5 SL antitropf comfort

» SNU 5 SLi antitropf comfort

antitropf comfort

°C

Eco

1300 726 211

https://1stchoicehotwater.com.au

OPERATION

General information

14 | SNU 5 www.stiebel-eltron.com

OPERATION

1. General information

The chapters "Special Information" and "Operation" are intended

for both the user and qualiﬁed contractors.

The chapter "Installation" is intended for qualiﬁed contractors.

Note

Read these instructions carefully before using the appli-

ance and retain them for future reference.

Pass on the instructions to a new user if required.

1.1 Safety instructions

1.1.1 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.

1.1.2 Symbols, type of risk

Symbol Type of risk

Injury

Electrocution

Burns

(burns, scalding)

1.1.3 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-seri-

ous or minor injury.

1.2 Other symbols in this documentation

Note

General information is identiﬁed by the symbol shown

on the left.

 Read these texts carefully.

Symbol Meaning

Material losses

(appliance damage, consequential losses and environmen-

tal pollution)

Appliance disposal

 This symbol indicates that you have to do something. The ac-

tion you need to take is described step by step.

1.3 Units of measurement

Note

All measurements are given in mm unless stated oth-

erwise.

2. Safety

2.1 Intended use

This open vented (non-pressurised) appliance is designed for heat-

ing domestic hot water. The appliance can supply one draw-off

point.

This appliance is intended for domestic use. It can be used safely

by untrained persons. The appliance can also be used in a non-do-

mestic environment, e.g. in a small business, as long as it is used

in the same way.

Any other use beyond that described shall be deemed inappropri-

ate. Observation of these instructions and of instructions for any

accessories used is also part of the correct use of this appliance.

2.2 General safety instructions

WARNING Burns

There is a risk of scalding at outlet temperatures in ex-

cess of 43°C.

!WARNING Injury

The temperature selector should only be removed by a

qualiﬁed contractor.

!WARNING Injury

The appliance may be used by children aged 8 and up and

persons with reduced physical, sensory or mental capa-

bilities or a lack of experience and know-how, provided

that they are supervised or they have been instructed on

how to use the appliance safely and have understood

the resulting risks. 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 men-

tal abilities are allowed to use this appliance, we recommend a

permanent temperature limit. A qualiﬁed contractor can set the

limit.

!Material losses

Protect the appliance and its tap against frost.

OPERATION

Appliance description

www.stiebel-eltron.com SNU 5 | 15

ENGLISH

!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-pressurised water

heaters.

 Never use a hose with aerator to extend the tap

outlet.

!Material 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.

2.3 CE designation

The CE designation shows that the appliance meets all essential

requirements according to the:

- Low Voltage Directive

- Electromagnetic Compatibility Directive

2.4 Test symbols

See type plate on the appliance.

3. Appliance description

The open vented (non-pressurised) appliance constantly maintains

the water content at the pre-selected temperature. The appliance

may only be installed with taps for open vented (non-pressurised)

water heaters (see chapter "Installation/ Appliance description/

Accessories").

thermostop function

The thermostop function (thermal separation) prevents the tap

becoming hot in standby mode.

Anti-drip function

The anti-drip function prevents expansion water from escaping

from the tap during heating. When water is heated, gas bubbles

are formed. The amount of gas bubbles depends on the water

quality. At temperatures >75°C the rising gas bubbles can cause

residual water to drip from the tap outlet.

Subject to design, some taps have a tendency to drip for a short

while after being closed. This dripping is caused by residual water

escaping from the tap outlet and is not linked to expansion water.

3.1 Operation

The required DHW outlet temperature can be set at the tempera-

ture selector. The heat-up indicator illuminates during the heat-up

process.

D0000047838

1 Temperature selector

2 Heat-up indicator

°C = Cold. On this setting, the appliance is protected from

frost. The tap and the water line are not protected.

Eco = Recommended energy saving setting (approx. 60°C),

minor scaling

85 = Maximum selectable temperature

Note

A qualiﬁed contractor can set a temperature limit on the

appliance (see chapter "Installation/ Settings/ Setting

the temperature limit").

4. 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 outlet using commercially available descaling agents.

5. Troubleshooting

Problem Cause Remedy

The appliance does not

supply hot water.

The temperature selector

is set to “°C”.

Switch the appliance on

by turning the tempera-

ture selector.

No power to the appli-

ance.

Check the plug and the

fuses/MCBs in the fuse

box.

Water can only be drawn

at a reduced rate.

The aerator in the tap is

scaled up.

Descale / replace the

aerator.

Loud boiling noises in-

side the appliance.

The appliance is scaled

up.

Have the appliance

descaled by a qualified

contractor.

Water drips from the tap

outlet during the heat-up

process.

Frequent minimal draw-

off amounts (< 0.4l/min).

Change your draw-off

pattern (> 0.4l/min).

If you cannot remedy the fault, notify your qualiﬁed contractor.

To facilitate and speed up your request, provide the number from

the type plate (000000-0000-000000).

Typ:

Nr.: ...... - .... - ......

D0000047804

SNU 5

16 | SNU 5 www.stiebel-eltron.com

INSTALLATION

Safety

INSTALLATION

6. Safety

Only a qualiﬁed contractor should carry out installation, commis-

sioning, maintenance and repair of the appliance.

6.1 General safety instructions

We guarantee trouble-free function and operational reliability only

if original accessories and spare parts intended for the appliance

are used.

6.2 Instructions, standards and regulations

Note

Observe all applicable national and regional regulations

and instructions.

7. Appliance description

The open vented (non-pressurised) appliance is only suitable for

undersink installation. The appliance is intended to supply one

draw-off point for heating cold water.

7.1 Standard delivery

Delivered with the appliance:

- Wall mounting bracket

7.2 Accessories

7.2.1 Required 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

7.2.2 Further accessories

- Strainer for the "cold water inlet" connection

8. Preparations

 Flush the water line thoroughly.

Water installation

A safety valve is not required.

Taps

Sealed taps are not permitted.

 Install an open tap.

8.1 Installation site

!Material losses

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

!Material losses

Mount the appliance on the wall. The wall must have a

sufﬁcient load-bearing capacity.

Note

The appliance is only suitable for undersink installation.

The water connections of the appliance point upwards.

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

820

520-570

°C

Eco

D0000033291

850

550-600

°C

Eco

D0000033294

www.stiebel-eltron.com SNU 5 | 17

ENGLISH

INSTALLATION

Installation

9. Installation

9.1 Appliance installation

 Mark out the drill holes using the installation template (see

middle part of these instructions).

 Drill the holes and insert suitable rawl plugs.

 Secure the wall mounting bracket using suitable screws.

 Hang the appliance on the wall mounting bracket.

Note

Surplus cable can be stored in the cable compartment.

D0000034827

9.2 Water connection

!Material losses

Carry out all water connection and installation work in

accordance with regulations.

!Material losses

Counterhold with a suitable spanner when tightening the

ﬁttings.

°C

Eco

com for t

D0000034825

22 19

!Material 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").

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.

9.3 Power supply

WARNING Electrocution

Carry out all electrical connection and installation work

in accordance with relevant regulations.

WARNING Electrocution

Ensure the appliance can be separated from the power

supply by an isolator that disconnects all poles with at

least 3 mm contact separation.

!Material losses

The voltage speciﬁed on the type plate must match the

mains voltage.

 Observe the type plate.

The following electrical connections are permissible:

SNU 5 SL 1kW SNU 5 SLi

Connection to a freely accessible

standard socket

X X

Permanent connection to an ap-

pliance junction box with earth

conductor

18 | SNU 5 www.stiebel-eltron.com

INSTALLATION

Commissioning

10. Commissioning

WARNING Electrocution

Commissioning may only be carried out by a qualiﬁed

contractor in accordance with safety regulations.

10.1 Initial start-up

26�02�06�0204

 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.

 Insert the plug into the standard socket or set the fuse/MCB

in the fuse box.

 Select a temperature.

Note

If you fail to follow the correct sequence (ﬁrst water, then

power), the high limit safety cut-out will respond.

Proceed as follows:

 Fill the appliance with water.

 Brieﬂy disconnect the appliance from the power

supply.

10.1.1 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 instruc-

tions for any accessories.

10.2 Recommissioning

See chapter "Installation/ Commissioning/ Initial start-up".

11. Settings

11.1 Setting the temperature limit

°C

Eco

D0000047839

1 Temperature selector

2 Limiting ring

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

"°C").

 Pull off the temperature selector and the limiting ring.

 Push the limiting ring with the required maximum setting

onto the adjusting shaft.

 Fit the temperature selector in the zero setting (°C).

12. Shutdown

 Isolate the appliance from the power supply by removing the

plug or by tripping the fuse/MCB in the fuse box.

 Drain the appliance (see chapter "Installation/ Maintenance/

Draining the appliance").

13. Troubleshooting

Problem Cause Remedy

The appliance does

not supply hot water.

The high limit safety

cut-out has responded.

Remedy the cause of the fault.

If necessary, replace the tem-

perature 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 automati-

cally reset.

The strainer is contam-

inated.

Clean/ replace the strainer in

the "cold water inlet" connec-

tion.

Loud boiling noises

inside the appliance.

The appliance is scaled

up.

Descale the appliance.

The tap drips for a

while after it has

been closed.

The residual water

is not held in the tap

outlet.

Replace the aerator in the tap

outlet or the tap.

The tap drips when

the appliance is

heating up.

An unsuitable tap is

being used, e.g. a WAT

anti-drip tap.

Replace the tap (see chapter

"Installation/ Appliance de-

scription/ Accessories").

The anti-drip function

is faulty.

Replace the appliance.

www.stiebel-eltron.com SNU 5 | 19

ENGLISH

INSTALLATION

Maintenance

14. Maintenance

WARNING Electrocution

Before any work on the appliance, disconnect all poles

of the appliance from the power supply.

 Dismount the appliance for maintenance work.

14.1 Draining the appliance

WARNING Burns

Hot water may escape during the draining process.

 Drain the appliance via the connector.

14.2 Opening the appliance

°C

Eco

D0000047843

 Pull off the temperature selector and the limiting ring.

 Remove the screws underneath the temperature selector.

 Open the appliance cover by lowering the bolt screws in-

wards and pivot the cover upwards, then remove it.

14.3 Descaling the appliance

!Material losses

Never treat the cylinder surface with descaling agents.

 Remove the ﬂanged immersion heater.

 Carefully tap the heating element to remove large limescale

deposits.

 Immerse the heating element up to the ﬂange plate in desca-

ling agent.

14.4 Cleaning the strainer

°C

Eco

D0000047841

 Detach the "cold water inlet" connection.

 Using pliers, remove the strainer from the "cold water inlet"

connection.

 Descale or replace the strainer.

14.5 Checking the earth conductor

 Pull off the temperature selector and the limiting ring.

 Check the earth conductor (in Germany, e.g. BGVA3) across

a temperature controller ﬁxing screw and the earth conduc-

tor contact of the power cable.

14.6 Replacing the power cable

The power cable must only be replaced by a qualiﬁed electrician

with the original spare part. Alternatively, the H05VV-F3x1.0 cable

may be used.

D0000034824

 Route the power cable along the cable guide.

14.7 Positioning the temperature sensor in its

protective pipe

 When replacing the temperature controller, guide the tem-

perature sensor into its protective pipe.

 Secure the temperature sensor in place below the earthed

plug.

26�02�06�0219

185

20 | SNU 5 www.stiebel-eltron.com

INSTALLATION

Specication

15. Speciﬁcation

15.1 Dimensions and connections

c06 c01

100

421

230

140

263

14328

D0000035039

SNU 5 SL 1 kW SNU 5 SLi

c01 Cold water Inlet Male thread G 3/8 A G 3/8 A

c06 DHW outlet Male thread G 3/8 A G 3/8 A

15.2 Wiring diagram

1/N/PE ~ 220 - 240V

85�02�06�0001

15.3 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 of 10 °C and a

maximum temperature setting, see the diagram.

35 40 45 50 55 60 65 70 75 80 85

84�02�02�0044

x Temperature settings in °C

y Duration in min

1 1kW appliance

2 2kW appliance

15.4 Country-speciﬁc approvals and certiﬁcations

The test symbols can be seen on the type plate.

15.5 Extreme operating and fault conditions

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

occur in the system.

www.stiebel-eltron.com SNU 5 | 21

ENGLISH

INSTALLATION

Specication

15.6 Data table

SNU 5 SL 1 kW SNU 5 SLi SNU 5 SLi

221116 221121 229467

Hydraulic data

Nominal capacity l 5 5 5

Mixed water volume 40 °C l 10 10 10

Electrical data

Rated voltage V220 230 240 220 230 240 220 230 240

Rated output kW 0.9 1.0 1.1 1.8 2.0 2.2 1.8 2.0 2.2

Rated current A 4.1 4.3 4.5 8.3 8.7 9.1 8.3 8.7 9.1

Fuse/MCB rating A 10 10 10 10 10 10 10 10 10

Phases 1/N/PE 1/N/PE 1/N/PE

Frequency Hz 50/60 50/60 50/60

Application limits

Temperature setting range °C 35 - 85 35 - 85 35 - 85

Max. permissible pressure MPa 000

Max. flow rate l/min 555

Energy data

Standby power consumption over 24h at 38°C kWh 0.09 0.09 0.09

Standby energy consumption/24h at 65°C kWh 0.2 0.2 0.2

Energy efficiency category A A A

Versions

IP rating IP24 IP24 IP24

Type Open vented Open vented Open vented

Type of installation Undersink Undersink Undersink

Internal cylinder material PP PP PP

Thermal insulation material Polystyrene Polystyrene Polystyrene

Casing material PS PS PS

Colour white white white

Connections

Water connection G 3/8 G 3/8 G 3/8

Dimensions

Depth mm 230 230 230

Height mm 421 421 421

Width mm 263 263 263

Weights

Weight kg 3.0 3.0 3.0

22 | SNU 5 www.stiebel-eltron.com

GUARANTEE | ENVIRONMENT AND RECYCLING

Guarantee

The warranty conditions of our German companies do not

apply to appliances acquired outside of Germany. In countries

where our subsidiaries sell our products, it is increasingly the

case that warranties can only be issued by those subsidiaries.

Such warranties are only granted if the subsidiary has issued

its own terms of warranty. No other warranty will be granted.

We shall not provide any warranty for appliances acquired in

countries where we have no subsidiary to sell our products.

This will not aect 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.

GUARANTEE

ENVIRONMENT AND RECYCLING

INSTALLATION TEMPLATE (IN THE

MIDDLE OF THESE INSTRUCTIONS)

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