STIEBEL ELTRON SHP-A 220-300 (X) Plus Operation Instruction

OPERATION AND INSTALLATION

UTILISATION ET INSTALLATION

DHW heat pump | Chauffe-eau thermodynamique

» SHP-A 220 Plus

» SHP-A 300 Plus

» SHP-A 300 X Plus

2 | SHP-A 220-300 Plus www.stiebel-eltron.com

CONTENTS

SPECIAL INFORMATION

OPERATION

1. General information ��4

1.1 Safety instructions �� 4

1.2 Other symbols in this documentation �� 4

1.3 Units of measurement �� 4

1.4 Standardised output data �� 4

2. Safety �� 4

2.1 Intended use �� 4

2.2 General safety instructions �� 5

2.3 Test symbols �� 5

3. Appliance description ��5

3.1 Heat pump operating principle �� 6

3.2 DHW heating �� 6

3.3 Appliance operation outside the application limits �� 7

3.4 Defrosting �� 7

3.5 Frost protection �� 7

3.6 Minimum runtime and minimum pause time �� 7

3.7 Connection of an external signal transmitter �� 7

4. Settings ��8

4.1 Display and controls �� 8

4.2 Settings �� 8

4.3 “Quick heat-up” key �� 10

4.4 Emergency shutdown �� 11

5. Maintenance and care �� 11

6. Troubleshooting �� 12

INSTALLATION

7. Safety �� 14

7.1 General safety instructions �� 14

7.2 Instructions, standards and regulations �� 14

8. Appliance description �� 14

8.1 Standard delivery �� 14

8.2 Required accessories �� 14

8.3 Additional accessories �� 14

9. Preparation �� 14

9.1 Transport �� 14

9.2 Storage �� 15

9.3 Installation site �� 15

9.4 Siting the appliance �� 16

10. Installation �� 17

10.1 Water connection �� 17

10.2 SHP-A 300 X Plus : Connection of an external heat

generator ��18

10.3 Condensate drain ��18

10.4 Electrical connection �� 18

10.5 Assembling the appliance �� 21

11. Commissioning �� 21

11.1 Initial start-up �� 21

11.2 Recommissioning �� 21

12. Settings �� 22

13. Appliance shutdown �� 22

14. Troubleshooting �� 22

14.1 Fault codes �� 23

14.2 Resetting the high limit safety cut-out �� 24

14.3 Motor overload relay �� 24

15. Maintenance and cleaning �� 24

15.1 Removing the appliance cover �� 24

15.2 Removing the casing ring �� 25

15.3 Clean the evaporator. �� 25

15.4 Drain cylinder �� 25

15.5 Descaling the electric emergency/booster heater �� 26

15.6 Protective anode �� 26

15.7 Valves �� 26

15.8 Condensate drain ��26

15.9 Replacing the power cable �� 26

15.10 Fitting the casing ring �� 26

15.11 Fitting the appliance cover �� 26

16. Speciﬁcation �� 27

16.1 Dimensions and connections �� 27

16.2 Wiring diagram �� 30

16.3 Fault conditions �� 31

16.4 Data table �� 31

16.5 Appliance parameters �� 33

GUARANTEE

ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION

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ENGLISH

SPECIAL INFORMATION

- The appliance may be used by children aged8

and older and persons with reduced physical,

sensory or mental capabilities or a lack of ex-

perience and know-how, provided that they are

supervised or they have been instructed on how

to use the appliance safely and have understood

the potential risks. Children must never play with

the appliance. Children must never clean the ap-

pliance or perform user maintenance unless they

are supervised.

- Observe all applicable national and regional reg-

ulations and instructions during installation.

- The appliance is not approved for outdoor

installation.

- Observe the minimum clearances (see chap-

ter “Installation/ Preparations/ Siting the

appliance”).

- Observe the requirements concerning the instal-

lation room (see chapter “Speciﬁcation/ Data

table”).

- If the appliance is permanently connected to the

power supply, ensure that the appliance can be

separated from the power supply by an isolator

that disconnects all poles with at least 3mm con-

tact separation. Contactors, circuit breakers or

fuses can be used for this.

- Observe the safety measures to prevent contact

with dangerous ‘live’ currents.

- Observe the fuse protection required for the ap-

pliance (see chapter “Speciﬁcation/ Data table”).

- The power cable must only be replaced (for ex-

ample if damaged) with an original spare part by

a qualiﬁed contractor authorised by the manufac-

turer (connection typeX).

- The appliance’s DHW cylinder is pressurised.

During the heat-up process, expansion water will

drip from the safety valve.

- Regularly activate the safety valve to prevent

it from becoming blocked, e.g. by limescale

deposits.

- Drain the appliance as described in chapter “In-

stallation/ Maintenance and cleaning/ Draining

the cylinder”.

- Install a type-tested safety valve in the cold water

supply line.

- The maximum pressure in the cold water supply

line must be at least 20% below the response

pressure of the safety valve. If the maximum

pressure in the cold water supply line is higher,

install a pressure reducing valve.

- Size the drain so that water can drain off unim-

peded when the safety valve is fully opened.

- Fit the discharge pipe of the safety valve with

a constant downward slope and in a room free

from the risk of frost.

- The safety valve discharge aperture must remain

open to atmosphere.

OPERATION

General information

4 | SHP-A 220-300 Plus www.stiebel-eltron.com

OPERATION

1. 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 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 adjacent symbol.

 Read these texts carefully.

Symbol Meaning

Material losses

(appliance damage, consequential losses and environmen-

tal pollution)

Symbol Meaning

Appliance disposal

 This symbol indicates that you have to do something. The ac-

tion you need to take is described step by step.

 These symbols show you the software menu level (in

this example level3).

1.3 Units of measurement

Note

All measurements are given in mm unless stated oth-

erwise.

1.4 Standardised output data

Information on determining and interpreting the speciﬁed stand-

ardised output data

Standard: EN 16147

The output data speciﬁcally mentioned in text, diagrams and

technical datasheets has been calculated according to the test

conditions of the standard shown in the heading of this section.

Generally, these standardised test conditions will not fully meet

the conditions found at the installation site of the system user.

Depending on the chosen test method and the extent to which this

method deviates from the conditions deﬁned in the norm shown in

the heading of this section, any deviations can have a considerable

impact. Additional factors that have an inﬂuence on the test values

are the measuring equipment, the system conﬁguration, the age

of the system and the ﬂow rates.

A conﬁrmation of the speciﬁed output data can only be obtained

if the conditions applicable to the relevant test match those of the

standard shown in the heading of this chapter.

2. Safety

2.1 Intended use

The purpose of this appliance is to heat domestic hot water within

the application limits stated in the chapter “Speciﬁcation/ data

table”.

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

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

mestic 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 inappro-

priate. Observation of these instructions and of the instructions

for any accessories used is also part of the correct use of this

appliance.

!

OPERATION

Appliance description

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ENGLISH

2.2 General safety instructions

The appliance should only be operated once it is fully installed

and all safety equipment has been ﬁtted.

!

WARNING Injury

The appliance may be used by children aged8 and older

and persons with reduced physical, sensory or mental

capabilities or a lack of experience and know-how, pro-

vided that they are supervised or they have been in-

structed on how to use the appliance safely and have

understood the potential risks. Children must never play

with the appliance. Children must never clean the ap-

pliance or perform user maintenance unless they are

supervised.

WARNING Electrocution

Contact with live components presents a threat to life.

Damage to the insulation or to individual components

may result in a threat to life.

 If there is damage to the insulation, switch off the

power supply and arrange a repair.

All work on the electrical installation must be carried

out by a qualiﬁed contractor.

WARNING Burns

The water in the DHW cylinder can be heated to temper-

atures in excess of 60°C. There is a risk of scalding at

outlet temperatures in excess of 43°C.

 Ensure you do not come into contact with the water

when discharged.

WARNING Burns

Touching hot components can lead to burns.

 When working on hot components, always wear

protective working clothing and safety gloves.

The pipework connected to the DHW outlet of the appli-

ance can reach temperatures in excess of 60°C.

WARNING Burns

In the case of a fault, temperatures up to the high limit

safety cut-out limit can occur (see "Speciﬁcation/ Data

table" chapter).

WARNING Burns

The appliance is ﬁlled with refrigerant at the factory.

In the event of refrigerant escaping due to a leak, avoid

coming into contact with the refrigerant or inhaling the

released vapours. Ventilate the rooms affected.

WARNING Electrocution

Never operate the appliance when the casing is open or

without a cover.

!

CAUTION Injury

If objects are left on the appliance, noise emissions may

increase due to resulting vibrations, and the objects

could fall and cause injury.

 Never place any objects on top of the appliance.

!

Material losses

Ensure that the appliance, water pipes and safety valves

are free from the risk of frost. If you disconnect the ap-

pliance from the power supply, it is no longer protected

against frost or corrosion.

 Never interrupt the power supply to the appliance.

If voltage is supplied to the impressed current anode

and the PCB separately, the appliance remains protected

against corrosion.

!

Material losses

Keep the appliance installation site free from air contam-

inated with oil or salt (chloride) and corrosive or explo-

sive substances. Avoid contaminating the installation site

with dust, hairspray or substances containing chlorine

or ammonia.

!

Material losses

Covering the air intake or air discharge leads to a reduced

air supply. If the air supply is restricted, the operational

reliability of the appliance cannot be guaranteed.

 Never cover the appliance.

!

Material losses

Only operate the appliance when the DHW cylinder has

been ﬁlled. If the DHW cylinder is empty, safety equip-

ment switches off the appliance.

!

Material losses

Heating liquids other than potable water is not permitted.

Note

The appliance's DHW cylinder is pressurised. During the

heat-up process, expansion water will drip from the safe-

ty valve.

 If water continues to drip when heating is complet-

ed, please inform your qualiﬁed contractor.

2.3 Test symbols

See type plate on the appliance.

3. Appliance description

The fully wired appliance enables DHW to be supplied efﬁciently

to several draw-off points using renewable energy. The appliance

extracts heat from the intake air. This heat is used to heat up the

water in the DHW cylinder with added electric power. The amount

of electric energy and time required to heat up the DHW depend

on the temperature of the air drawn in. When the air intake tem-

perature drops, the heat pump’s heating output is reduced and

the heat-up time is extended.

The appliance is designed for indoor installation. The appliance

operates in recirculation air mode and does not require outdoor

air.

Heat extraction can result in a drop in ambient temperature in

the installation room of between 1°Cand3°C. The appliance

also extracts moisture from the air, which turns into condensate.

The condensate is removed from the appliance via the condensate

drain.

OPERATION

Appliance description

6 | SHP-A 220-300 Plus www.stiebel-eltron.com

The appliance has an electronic control unit with LC display. You

can select the available amount of mixed water at a temperature

of 40 °C, for example. The electronic control unit makes energy

saving adjustments easier. Subject to the power supply and user

draw-off patterns, the water is heated automatically to the se-

lected set temperature.

External signal transmitters can be integrated via the built-in con-

tact input, e.g. a photovoltaic system to make use of solar power

generated on site.

When a hot water draw-off point is opened, the hot DHW is pushed

out of the appliance by the inﬂow of cold water.

The heat pump drive unit is ﬁtted in the upper section of the ap-

pliance. The DHW cylinder is located in the lower section of the

appliance. To protect against corrosion, the DHW cylinder is coated

internally with special enamel and is additionally equipped with

an impressed current anode.

!

Material losses

If you disconnect the appliance from the power supply, it

is no longer protected against frost or corrosion.

 Never interrupt the power supply to the appliance.

Available amount of DHW

The appliance’s nominal maximum available amount of DHW is

designed for the recommended number of users with average

user behaviour.

If the amount of DHW is insufﬁcient despite compliance with the

recommended number of users, this may be due to the following:

- The individual DHW demand is above average.

- The DHW circulation line installed as an additional option is

inadequately insulated.

- The DHW circulation pump is not controlled according to

temperature or time.

3.1 Heat pump operating principle

A closed circuit within the appliance contains refrigerant (see

“Speciﬁcation/Data table”). This refrigerant evaporates at low

temperatures.

In the evaporator, which extracts heat from the air drawn in, the

refrigerant changes from a liquid into a gaseous state. A com-

pressor draws in the gaseous refrigerant and compresses it. This

increase in pressure raises the refrigerant temperature. This re-

quires electrical energy. The energy (motor heat) is not lost, but

reaches the downstream condenser together with the compressed

refrigerant. There, the refrigerant indirectly transfers heat to the

DHW cylinder. An expansion valve then reduces the still prevalent

pressure and the cycle starts again.

Note

Following an interruption of the power supply, the

compressor operation remains blocked for at least one

minute. The PCB delays electronic starting by a minute,

during which the appliance goes through its initialising

process.

If the compressor subsequently fails to start, it may be

locked out by additional safety devices (motor overload

relay or high pressure switch). This block should lift after

1 to 10 minutes.

After the power supply has been re-established, the ap-

pliance continues to operate with the parameters that

were selected before the power supply was interrupted.

3.2 DHW heating

2

1

D0000050335

1 Cylinder top sensor

2 Integral sensor

The appliance is equipped with two temperature sensors.

- The cylinder top sensor captures the water temperature in

the upper section of the cylinder.

- The integral sensor is a temperature sensor afﬁxed over the

entire cylinder height. The integral sensor determines the

average cylinder temperature.

The appliance display indicates the temperature in the upper sec-

tion of the cylinder, which is captured by the cylinder top sensor.

The appliance control unit uses the average cylinder temperature

captured by the integral sensor.

DHW heating is started when the available mixed water volume

decreases to the percentage of maximum mixed water volume set

in the “Charge level” parameter.

The temperature captured by the sensor at the cylinder top may

still correspond to the set temperature.

For information on the heat-up time, see chapter “Speciﬁcation”.

The calculation of the available amount of mixed water is based

on the average cylinder temperature. The amount of mixed water

is only calculated if the water temperature in the upper section of

the cylinder is higher than 40 °C.

DHW is normally heated by the heat pump of the appliance within

the application limits (see chapter “Speciﬁcation/ Data table”).

Electric emergency/booster heater

In the event of an appliance fault, the electric emergency/booster

heater can be activated in emergency heating mode, provided

a ﬂashing fault key is displayed. See chapter “Settings/ ‘Rapid

heat-up’ key/ Emergency heating mode”.

OPERATION

Appliance description

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ENGLISH

In the event of a higher hot water demand on a single occasion,

use the rapid heat-up key to activate the emergency/booster heat-

er manually for one-off heat-up in addition to the heat pump. See

chapter “Settings/ ‘Rapid heat-up’ key/ Rapid/comfort heating”.

SHP-A 300 X Plus: Connection of an external heat generator

!

Material losses

Even if an external heat generator is connected, do not

disconnect the appliance from the power supply as oth-

erwise it is not protected against frost and corrosion. The

power supply must not be interrupted even in winter,

when it is possible that DHW heating is only being pro-

vided via the external heat generator.

The appliance is equipped with an integral smooth tube heat ex-

changer to which an external heat generator can be connected

(e.g. a solar thermal system or central heating system). The DHW

cylinder has sensor wells available for this in various positions.

Once during commissioning, the qualiﬁed contractor must match

the controls between the appliance and the external heat gen-

erator.

3.3 Appliance operation outside the application

limits

 To guarantee fault-free operation of the appliance, make sure

you operate the appliance within its application limits (see

chapter “Speciﬁcation/ Data table”).

3.3.1 Application limits for heat pump operation

Ambient temperatures below the application limit

At temperatures below the lower application limit hoar frost may

form on the evaporator depending on the air humidity and water

temperature. If hoar frost forms on the evaporator, the hoar frost

temperature monitor switches the heat pump compressor off. The

compressor switches on automatically once the evaporator has

defrosted.

Note

Heat-up times are longer while the evaporator is defrost-

ing.

Ambient temperatures above the application limit

The safety equipment switches the appliance off if the upper ap-

plication limit is exceeded. Following a cooling time of several

minutes the appliance is switched back on automatically. The

appliance is switched off again if the ambient temperature rises

above the permissible temperature value again.

3.4 Defrosting

Low air intake temperatures may result in the formation of hoar

frost on the evaporator, subject to relative humidity and DHW

temperature. The appliance is equipped with an electronic de-

frost monitor. DHW heating is interrupted during the defrosting

process. The appliance switches off the compressor during the

defrosting process. The fan continues to run. The defrosting pro-

cess is shown on the appliance display.

A maximum defrost time is stored in the appliance. If the maxi-

mum defrost time is exceeded, the appliance stops the defrosting

process and releases the electric emergency/booster heater.

Note

Heat-up times are longer while the evaporator is defrost-

ing.

Note

The appliance starts the defrosting process as soon as

the compressor runtime reaches the "Defrost required"

time span stored in the appliance.

3.5 Frost protection

The appliance activates a frost protection function if the temper-

ature captured by the integral sensor is below a certain limit.

See chapter “Speciﬁcation/ Appliance parameters”. The appliance

then heats the water by means of the heat pump and the electric

emergency/booster heater. The heat pump and electric emergen-

cy/booster heater switch off when the temperature captured by

the integral sensor reaches 18°C.

3.6 Minimum runtime and minimum pause time

!

Material losses

When operating with external switching devices that can

interrupt the power supply to the appliance, such as time

switches, energy management systems or home automa-

tion systems, must adhere to the following conditions:

- The minimum ON time is 60 minutes.

- The minimum pause time following a shutdown is

20 minutes.

- The appliance should not be switched on/off more

than 10 times per day.

- The breaking capacity of the switching actuator must

meet the fuse protection requirements (see chapter

"Speciﬁcation / Data table").

3.7 Connection of an external signal transmitter

Note

This type of connection must only be carried out by a

qualiﬁed electrician.

External signal transmitters can be integrated via the built-in con-

tact input, e.g. a PV system to make use of solar power generated

on site.

The appliance has a second set temperature preselected at the

factory. This is activated in the event of an external switching

signal. Set temperature2 is higher ranking than the standard set

temperature while there is an external switching signal. Following

a one-off activation (signal is present for at least 1 minute), set

temperature2 applies for at least 20minutes and is ranked higher

than set temperature1.

You can change set temperature 2 on the appliance (see chapter

“Settings/Settings/Set temperature 2”).

OPERATION

Settings

8 | SHP-A 220-300 Plus www.stiebel-eltron.com

4. Settings

4.1 Display and controls

Note

15seconds after every operation, the appliance auto-

matically reverts to the default display (amount of mixed

water) and saves the set value.

electronic comfort

2

5

4

D0000059162

3

1

1 Display

2 “Plus” key

3 “Minus” key

4 “Quick heat-up” key

5 “Menu” button

4.1.1 Symbols

Symbol Description

Mixed water volume: The currently available amount of mixed

water at 40°C and at 15°C cold water temperature is shown.

Actual temperature: The current actual temperature is shown. The

actual temperature indicates the temperature in the upper section

of the DHW cylinder and therefore largely corresponds to the outlet

temperature.

Set temperature

External signal transmitter: Set temperature2 is the DHW tempera-

ture to which the appliance regulates if an external signal transmit-

ter is connected and active.

Standby: The symbol flashes, if the appliance PCB and load (com-

pressor) are separately supplied with voltage. This connection

option is required, if the appliance is to be operated via switchable

sockets in an energy management system (see "Electrical connec-

tion" chapter) for example.

electric emergency/booster heater: This symbol indicates the pres-

ence of a demand on this component. This symbol being displayed

does not necessarily mean that the electric emergency/booster

heater is in operation.

Heat pump: This symbol indicates the presence of a demand on

this component. This symbol being displayed does not necessarily

mean that the compressor is running.

Defrost active

Service/fault: If the "service/fault" symbol appears on the display,

inform your qualified contractor. Continuous illumination of the

symbol indicates that the fault is not preventing appliance op-

eration. A flashing "Service/fault" symbol indicates that water is

not being heated and that it is essential you notify your qualified

contractor. Switching the appliance to emergency mode is a special

case. The electric emergency/booster heater will then heat the

water despite the flashing "service/fault" symbol.

The symbols for electric emergency/booster heater and heat pump

are displayed when there is a demand for these appliance compo-

nents. These symbols being displayed does not necessarily mean

that the electric emergency/booster heater and the heat pump

are running. Example: The appliance is in “rapid/comfort heat-

ing” mode. The electric emergency/booster heater switches off

when the temperature in the upper cylinder section has reached

65°C. The heat pump has not yet heated the lower section to 65°C

and the “rapid/comfort heating” function has therefore not yet

terminated. The “electric emergency/booster heater” symbol is

displayed until the rapid/comfort heating has terminated.

4.2 Settings

Menu

In default display mode, the display shows the amount of mixed

water.

The "Menu" key allows you to call up all

information and adjustment options in

sequence. The relevant symbol appears.

 "Mixed water volume" display

 "Actual temperature" display

 Set temperature 1

 Set temperature 2

 Changing units

 Charging level

 Fault code

 E fault code

 “Mixed water volume” display

The currently available amount of mixed

water at 40°C and at 15°C cold water

temperature is shown.

"--L" is shown if less than 10l mixed

water is available.

DHW demand for Mixed water volume at 40°C

Bath 120-150 l

Showers 30-50 l

Washing hands 2-5 l

The amount of mixed water that can be achieved depends on the

cylinder capacity and the set temperature selected.

OPERATION

Settings

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ENGLISH

 “Actual temperature” display

In the "Mixed water volume" menu, press

"Menu" once to access the "Actual tem-

perature" menu.

The "Actual temperature" symbol ap-

pears.

The current actual temperature is shown.

The actual temperature indicates the

temperature in the upper section of the

DHW cylinder and largely corresponds to

the outlet temperature.

 Set temperature 1

Note

For hygiene reasons, never set the DHW temperature

below 50°C.

Set temperature1 is the DHW temperature to which the appliance

regulates if no external signal transmitter is connected and active.

In the "Actual temperature" menu, press

"Menu" once to access the "Set temper-

ature 1" menu.

"Set temperature1" symbol appears.

You can change the value using the

"Plus" and "Minus" keys. Setting range:

20 - 65 °C

Note

Another way to adjust set temperature1 is to press the

"Plus" or "Minus" keys from within the default display

(mixed water volume).

Frost protection

Only frost protection remains active if

you set the set temperature to below

20°C using the "Minus" key. The display

shows "--°C".

 Set temperature 2

Note

For hygiene reasons, never set the DHW temperature

below 50°C.

Set temperature2 is the DHW temperature to which the appliance

regulates if an external signal transmitter is connected and active.

In the "Set temperature1" menu, press

"Menu" once to access the "Set tempera-

ture2" menu. The "External signal trans-

mitter" symbol appears.

You can change the value using the

"Plus" and "Minus" keys. Setting range:

20 - 65 °C

Operation with external signal transmitter

!

Material losses

See "Permissible voltage range for external signal trans-

mitters" in the "Speciﬁcation/data table" chapter.

As standard, the appliances feature the ability to assign a speciﬁc,

individual set DHW temperature (“set temperature2”) to a con-

nected external signal transmitter, such as a PV system or a low

tariff transmitter. This set temperature 2 is activated if the termi-

nal connected to the external signal transmitter receives a signal

(see “Electrical connection/external signal transmitter connection

option” chapter). While activated, set temperature2 replaces the

standard set DHW temperature (set temperature1).

If set temperature2 is activated by the external signal transmitter,

this set temperature will then be active for at least 20minutes.

If the external signal remains active after the 20minutes have

passed, the compressor will run until the external signal drops

out or set temperature2 is reached. Afterwards, the selected set

temperature1 is activated again.

When the relevant DHW set temperature has been reached, the

compressor switches off and remains off for a minimum idle time

of 20minutes.

The following diagram illustrates the connections by means of a

sample signal sequence from an external signal transmitter.

Example:

Water temperature °C 55

Set temperature 1 °C 50

Set temperature 2 °C 65

A

1

0

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]

B

1

0 2

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]

D0000034613

A External signal

B Compressor

1 20 min. minimum runtime, set temperature2

2 20 min. minimum compressor idle time

OPERATION

Settings

10 | SHP-A 220-300 Plus www.stiebel-eltron.com

Note

An external signal must be present for at least 60sec-

onds before the control unit responds to it. This will for

example prevent a brief burst of sunshine from triggering

a heat-up process, which due to a lack of further insola-

tion can then not be supplied with PV power generated

on site.

 Changing units

You can select whether the temperatures and the volume details

are displayed in SI units or US units. If you select 1, the values are

displayed in degrees Celsius and litres. If you select 0, the values

are displayed in degrees Fahrenheit and gallons.

Press the "Menu" key until "SI" appears

in the display.

Using the "Plus" and "Minus" keys, set

whether the display should use SI units

(1) or US units (0).

 Charging level

If the minimum available mixed water volume at the selected set

temperature is insufﬁcient, you can reduce the reheating hyster-

esis by increasing the charge level. This increases the minimum

DHW volume available. The effect equates to a virtual downward

shifting of the temperature sensor. This results in greater DHW

convenience. The efﬁciency of the appliance is slightly impaired.

DHW heating is started when the available mixed water volume

decreases to the percentage of maximum mixed water volume set

in the “Charge level” parameter.

Factory setting

Charging level % 40

The displayed mixed water volume is based on a mixed water

temperature of 40°C. At water temperatures below 40°C (±1K),

the mixed water volume is not calculated or displayed.

A further start condition, which overlaps the heat-up level start

conditions, is the reduction of the temperature captured by the

sensor at the cylinder top to 6 K below the active set temperature.

Press the "Menu" key, until an "L" fol-

lowed by a number appears in the dis-

play.

You can change the value using the

"Plus" and "Minus" keys. Setting range:

30 - 100 %

 Fault code

If the "Service/fault" symbol illuminates

or ﬂashes, you can query the fault code

using the "Menu" key. This menu remains

disabled if no fault has arisen.

See chapter “Troubleshooting/ Fault codes”.

 E fault code

A fault code preceded by E appears if the fault relates to the re-

frigerant circuit. Notify a qualiﬁed contractor.

4.3 “Quick heat-up” key

Note

To start rapid/comfort heating with the "Rapid heat-up"

key, the start screen must be displayed.

Press the "Rapid heat-up" key for two

seconds.

The "heat pump" and "electric emergen-

cy/booster heater" symbols appear.

4.3.1 Quick/comfort heat-up

Normally, the “Rapid heat-up” key is used to enable rapid/comfort

heating, which lets you cover an unexpectedly high DHW demand

without changing any of the appliance’s standard settings.

If quick/comfort heat-up is activated manually by pressing the

relevant key, the heat pump and the electric emergency/booster

heater will start in parallel, irrespective of the selected set tem-

perature, and will remain active until the DHW temperature in the

cylinder has reached 65°C.

If the water temperature in the upper cylinder section rises by a

hysteresis value above the set temperature on the cylinder top

sensor, the electric emergency/booster heater is switched off.

The electric emergency/booster heater remains in standby mode

until the set temperature has been reached throughout the DHW

cylinder. A ﬂashing “electric emergency/booster heater” symbol

indicates that the electric emergency/booster heater is in standby

mode.

The rapid/comfort heating function remains active until a temper-

ature of 65°C has been achieved throughout the DHW cylinder

(comfort heating). The appliance then automatically switches back

to the previously set parameters.

Note

The "electric emergency/booster heater" and "heat pump"

symbols are displayed until the rapid/comfort heating

terminates.

Note

To end rapid/comfort heating, press the "Rapid heat-up"

key for two seconds.

OPERATION

Maintenance and care

www.stiebel-eltron.com SHP-A 220-300 Plus | 11

ENGLISH

4.3.2 Emergency mode

If the appliance is faulty, you can use the emergency mode to

activate the electric emergency/booster heater.

Following a DHW demand, the appliance checks the temperature

increase every 15 minutes. If the temperature increase is <0.25°C

during each measurement interval until the end of the maximum

temperature increase time (see “Speciﬁcation” chapter), the ap-

pliance switches off the compressor. The “service/fault” symbol

ﬂashes on the display and a fault code indicates that the appliance

is not heating.

Press the “Rapid heat-up” key for two

seconds.

The “electrical emergency/booster heat-

er” symbol appears. Service/fault symbol

ﬂashes.

After the “Quick heat-up” key has been pressed, the indicated fault

code increments by a value of 256, as the fault codes are added

together (see fault code table in the “Troubleshooting” chapter).

“Service/fault” symbol continues ﬂashing. The electric emergency/

booster heater is activated.

The current set temperature (set temperature1 or set temper-

ature2) is ignored. In emergency heating mode, the appliance

operates with a ﬁxed set temperature. In the upper cylinder sec-

tion, the DHW is heated up to 65°C by the electric emergency/

booster heater.

Following one-time enabling of this function by means of the

“Quick heat-up” key, this function remains enabled for 7days.

Following 7days of emergency operation the electric emergency/

booster heater is disabled. The fault code shown on the display

decrements by256.

If you press the “Rapid heat-up” key again for two seconds within

the 7days of emergency heating mode, the 7-day runtime for

emergency heating mode will restart.

If the 7-day runtime for emergency heating mode has expired,

you can restart emergency heating mode for a further 7days by

pressing “Rapid heat-up”.

Pressing the “Quick heat-up” key only enables emergency mode if

an error with fault code8 occurred previously. In standard mode

pressing the “Quick heat-up” key only triggers one-time heat-up

of the DHW cylinder.

Emergency mode is disabled by an interruption of the power sup-

ply. The appliance tries again to heat with the heat pump. You

can avoid having to wait until the temperature increase time has

elapsed (see “Speciﬁcation” chapter) by starting manual emer-

gency heating mode.

Manual emergency heating mode

If a fault has occurred and no fault code is displayed, you can

activate emergency heating mode.

Keep the “Plus” and “Minus” buttons

pressed. In addition, press the “Menu”

button and keep all three buttons

pressed for 5seconds.

The “electrical emergency/booster heat-

er” symbol appears. Service/fault symbol

ﬂashes.

4.4 Emergency shutdown

In the event of an emergency, carry out the following steps:

 Interrupt the power supply by unplugging the appliance from

the mains or by tripping the MCB.

 Shut off the cold water supply.

 Immediately notify a qualiﬁed contractor, as the appliance

is not protected against corrosion while the power supply is

interrupted.

5. Maintenance and care

WARNING Electrocution

Only clean the exterior of the appliance. Never open the

appliance. Do not insert objects through the grille into

the interior of the appliance.

Never spray the appliance with water.

Never spray water into the appliance.

!

WARNING Injury

Maintenance work, such as checking electrical safety,

must only be carried out by a qualiﬁed contractor.

Appliance

components

Care and maintenance tips

Casing Use a damp cloth to clean the casing sections. Never use

abrasive or corrosive cleaning agents.

Air intake

grille/ air dis-

charge grille

Clean the air intake grille and air discharge grille every six

months. Cobwebs or other kinds of contamination can re-

strict the air supply to the appliance.

DHW cylinder

The DHW cylinder is equipped with a maintenance-free im-

pressed current anode to safeguard it against corrosion. The

power supply must not be interrupted while the appliance is

filled with water to enable the impressed current anode to

provide protection. Otherwise there is a risk of corrosion.

Electric emer-

gency/booster

heater

Have the electric emergency/booster heater descaled from

time to time. This will extend the service life of the electric

emergency/booster heater.

appliance Have the safety assembly and the evaporator checked regu-

larly by a qualified contractor.

Condensate

drain

Undo the condensate drain. Check that the condensate drain

is clear and remove any dirt from the condensate drain con-

nection.

Scaling

Almost every type of water will deposit limescale at high temper-

atures. This settles inside the appliance and affects both perfor-

mance and service life. A qualiﬁed contractor who knows the local

water quality will tell you when the next service is due.

OPERATION

Troubleshooting

12 | SHP-A 220-300 Plus www.stiebel-eltron.com

 Check the taps regularly. Limescale deposits at the tap out-

lets can be removed using commercially available descaling

agents.

 Regularly activate the safety valve to prevent it from becom-

ing blocked, e.g. by limescale deposits.

6. Troubleshooting

Note

At various points, reference is made to the appliance pa-

rameters. See chapter "Speciﬁcation".

Fault Cause Remedy

No hot water is

available.

No power at the appliance. Check that the appliance is con-

nected to the power supply.

A fuse/MCB in the fuse box

has blown/tripped.

Check whether the fuses/MCBs

in your fuse box have blown/

tripped. If required, disconnect

the appliance from the power

supply and replace the fuses/

reset the MCBs. Contact your

qualified contractor if the fuse/

MCB blows/trips again after the

appliance is re-connected to the

power supply.

The appliance output data

are calculated according to

standard, using the intake

temperature specified in

the data table. Below this

temperature the appliance

efficiency and output de-

crease. The heat-up time is

extended.

No action required.

The safety valve

of the DHW

cylinder is drip-

ping.

The appliance cylinder is

at mains water pressure.

During heat-up, expansion

water may drip from the

safety valve.

Notify a qualified contractor if

water continues to drip when

heat-up has been completed.

The condensate

drain drips.

The surface temperature

of the evaporator is lower

than the dew point tem-

perature of the ambient

air. Condensate forms.

The amount of condensate de-

pends on the humidity level of

the ambient air.

The room tem-

perature drops.

operation of the appliance

can cause the room tem-

perature to fall by 1 to 3°C,

as the appliance extracts

energy from the air.

If the room temperature falls

by more than 5°C, check the

room size (see the "Specifi-

cation/Data table" chapter).

Supplying energy by opening

a door to another room will

remedy this.

High power con-

sumption

The lower the intake tem-

perature, the lower the

heat pump efficiency.

Where possible, avoid high set

temperatures and the use of

rapid heat-up.

Service/fault

symbol is per-

manently on.

See the "Fault codes"

chapter.

Notify a qualified contractor. A

permanently lit "service/fault"

symbol indicates that a fault has

occurred, but the heat pump is

heating nevertheless.

Service/fault

symbol flashes

and the water

does not heat

up.

See the "Fault codes"

chapter.

It is imperative that you notify a

qualified contractor quickly. A

flashing "service/fault" symbol

indicates that a fault has oc-

curred and the heat pump is no

longer heating.

Defrost symbol

is shown.

The appliance is in defrost

mode.

No action required.

Fault Cause Remedy

The heat pump

symbol is flash-

ing.

There is a heat demand,

but the compressor is

locked out.

No action required. The com-

pressor restarts automatically

after the compressor lockout

time has elapsed. The symbol

stops flashing automatically.

The electric

emergency/

booster heater

symbol is flash-

ing.

A temperature controller

has switched off the elec-

tric emergency/booster

heater during rapid heat-

up.

No action required. The ap-

pliance continues the quick

heat-up process using the heat

pump. The symbol stops flash-

ing when the controller re-en-

ables the electric emergency/

booster heater. The symbol

goes out when the temperature

throughout the DHW cylinder

reaches the set rapid heat-up

temperature.

The electric

emergency/

booster heater

symbol is illu-

minated but the

electric emer-

gency/booster

heater is not

operational.

The electric emergency/

booster heater lights up

when there is a demand.

The internal controller of

the electric emergency/

booster heater may have

ended electric heating. A

possible cause may be a

fault in the electric emer-

gency/booster heater. A

possible cause may be that

the high limit safety cut-

out has responded.

Have a qualified contractor

check whether the controller of

the electric emergency/booster

heater is set correctly. The

controller must be turned fully

anti-clockwise. Have a qualified

contractor check the high limit

safety cut-out.

Fault code

You can call up a fault code if the Service/fault symbol is ﬂashing

or continuously lit on the display.

Keep pressing "Menu" until the fault code

appears.

Fault description Remedy

2

perma-

nently

on

The sensor at the cylinder top is

faulty. The actual temperature

display switches from the cyl-

inder top sensor to the integral

sensor. The appliance continues

to heat without any loss of com-

fort. The mixed water volume

cannot be calculated and is dis-

played as "- -".

Notify a qualified contrac-

tor.

4

perma-

nently

on

The integral sensor is faulty.

In the event of a faulty integral

sensor, the integral sensor is

set to the value of the sensor at

the cylinder top, and amount of

mixed water is calculated using

this value. The appliance contin-

ues to heat with a reduced start

hysteresis.

A mixed water volume is still cal-

culated, based on the assumption

that the cylinder top temperature

is reached throughout the DHW

cylinder.

Notify a qualified contrac-

tor.

OPERATION

Troubleshooting

www.stiebel-eltron.com SHP-A 220-300 Plus | 13

ENGLISH

Fault description Remedy

6

flashing

The sensor at the cylinder top

and the integral sensor are

faulty. The appliance no longer

delivers heat.

Notify a qualified contrac-

tor.

8

flashing

The appliance has ascertained

that the DHW cylinder has not

been heated within the maxi-

mum temperature increase time,

despite there being a demand.

You can temporarily contin-

ue to use the appliance by

pressing the "Rapid heat-

up" key to activate emer-

gency heating mode. See

chapter "Appliance descrip-

tion/ Emergency mode".

16

perma-

nently

on

A short circuit of the impressed

current anode has occurred or

the protective anode is faulty.

Immediately notify a qual-

ified contractor, as the

appliance is not protected

against corrosion if the

impressed current anode

is faulty.

32

flashing

The appliance is being operated

with a partially filled DHW cyl-

inder. The appliance does not

heat up.

Fill the appliance's DHW

cylinder. The fault code dis-

appears and the appliance

starts.

The anode current is interrupted.

The appliance does not heat up.

Notify a qualified contrac-

tor.

64

perma-

nently

on

The defrost temperature has not

yet been reached after the max-

imum defrost time has lapsed.

The compressor is faulty.

The fault is reset automat-

ically once the evaporator

temperature has risen to the

defrost end temperature.

The temperature of the intake air

is below the lower application

limit.

Wait for higher ambient

temperatures. Ensure that

values do not fall below the

application limit.

128

perma-

nently

on

There is no communication

between the controller and the

programming unit. The most

recently selected set values are

active. The appliance continues

to deliver heat.

Notify a qualified contrac-

tor.

256

flashing

Manually activated emergency

mode (only electric emergency/

booster heater enabled)

See chapter "Appliance

description/ Emergency

mode".

E 2 flashing The temperature sensor on the

evaporator is faulty.

Notify a qualified contrac-

tor.

E 16

perma-

nently

on

The high pressure limiter has

responded. Compressor heating

mode is temporarily blocked.

Compressor heating mode will

continue as soon as the pressure

has normalised.

Wait until the pressure has

normalised.

E 32

perma-

nently

on

An electrical fault has occurred.

Notify a qualified contrac-

tor.

E 64 flashing Evaporator temperature < mini-

mum evaporator temperature

Notify a qualified contrac-

tor.

E 128

flashing

A permanent pressure switch

fault has occurred. A pressure

fault occurred multiple times

within a defined pressure fault

evaluation time.

Notify a qualified contrac-

tor.

If several faults occur, the fault codes are added up.

Example: If both the cylinder top sensor and the integral sensor

are faulty, the display shows fault code6(= 2+4).

Application scenarios for emergency mode

If the appliance shows fault code8, you can manually activate

emergency mode. If a different fault occurred previously, but did

not cause the appliance to switch off, the display may show a

fault code that is the result of several faults added together. Listed

below are the fault codes which will allow you to enable emer-

gency mode.

Fault code displayed

8 8

10 Fault code 8 + fault code 2

12 8+4

24 8+16

26 8+2+16

28 8+4+16

138 8+2+128

140 8+4+128

152 8+16+128

154 8+2+16+128

156 8+4+16+128

When the appliance is operating in emergency mode, the fault

code shown is incremented by 256.

Notifying a qualiﬁed contractor

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

To facilitate and speed up your enquiry, please provide the serial

number from the type plate (000000-0000-000000). The type plate

can be found on the left, above the DHW outlet connection.

Sample type plate

000000-0000-000000

D0000035352

1

1 Number on the type plate

INSTALLATION

Safety

14 | SHP-A 220-300 Plus www.stiebel-eltron.com

INSTALLATION

7. Safety

Only a qualiﬁed contractor should carry out installation, commis-

sioning, maintenance and repair of the appliance.

7.1 General safety instructions

We guarantee trouble-free function and operational reliability only

if original accessories and spare parts intended for the appliance

are used.

7.2 Instructions, standards and regulations

Note

Observe all applicable national and regional regulations

and instructions.

Take note of the appliance type plate and chapter “Speciﬁcation”.

8. Appliance description

8.1 Standard delivery

Note

Accessories are located in the corners of the packaging.

Remove the accessories before disposing of the pack-

aging.

D0000061574

1

1 Corners of the packaging

The following are delivered with the appliance:

- Condensate drain bend

- For the “Cold water inlet” and “DHW outlet” connections: 2

insulated screw ﬁttings comprising a ﬂanged pipe, a gasket,

a union nut and an insulating sleeve

8.2 Required accessories

Various safety assemblies are available that are selected according

to supply pressure. These type-tested safety assemblies protect

the appliance against unacceptable excess pressure.

8.3 Additional accessories

– Condensate pump (if the condensate cannot be drained off with

a naturally occurring fall)

9. Preparation

9.1 Transport

!

CAUTION Injury

 Observe the weight of the appliance.

 Use suitable transport aids (e.g. sack truck) and

enough personnel for transportation.

!

Material losses

The appliance has a high centre of gravity and low over-

turning moment.

 Safeguard the appliance against falling over.

 Only set the appliance down on an even base.

!

Material losses

The appliance casing is not designed to withstand strong

forces. Incorrect handling can lead to material losses of

considerable extent.

 Observe the information on the packaging.

Only remove the packaging shortly before the installation.

Where possible, do not unpack the appliance until it has arrived

in the installation room. For transport and handling leave the ap-

pliance in its packaging and on the pallet. This enables brief hori-

zontal transport and provides places to hold onto during transport.

If the appliance has to be unpacked before transportation, we

recommend using a sack truck. Pad the contact surfaces to avoid

damaging the appliance. Secure the appliance to the sack truck

using a strap. Pad between the strap and the appliance and avoid

overtightening the strap. Where stair wells are narrow, you can

carry the appliance by the handles on the sack truck and the foot

of the appliance.

Vehicular transport

!

Material losses

The appliance must generally be stored and transported

vertically.

The appliance may be transported horizontally for brief periods,

over a maximum distance of 160km and on made-up roads.

Strong shocks are not permissible.

!

Material losses

If transported horizontally, the appliance must always be

laid on the shaded side of the box.

The appliance must not remain in a horizontal position

for more than 24hours.

If the appliance was transported horizontally, leave it to

rest in a vertical position for at least one hour before

commissioning.

 Observe the information on the packaging.

INSTALLATION

Preparation

www.stiebel-eltron.com SHP-A 220-300 Plus | 15

ENGLISH

D0000034797

1

1 Recessed grips

Transport from vehicle to installation room

The cardboard box has reinforced recessed grips along the top.

You can use these recessed grips, as well as the pallet at the lower

end, to carry the appliance into the installation room. Take note

of the weight of the appliance and ensure a sufﬁcient number of

personnel is available for handling the appliance.

9.2 Storage

If it is necessary to store the appliance for a prolonged period

before installation, observe the following information:

- Only store the appliance in a vertical position. Never store

the appliance horizontally.

- Store the appliance in a location that is dry and largely

dust-free.

- Protect the appliance from coming into contact with corrosive

substances.

- Ensure the appliance is not subjected to shocks or vibrations.

9.3 Installation site

!

Material losses

Observe the following list of requirements regarding the

installation site. Failure to observe this point puts the

appliance at risk of damage.

- The appliance is not approved for outdoor installation.

- The installation site must be free from ﬂammable, highly

combustible gases and substances, as well as high levels of

dust.

- The installation room must be free from the risk of frost.

- The intake temperature of the appliance must be within the

permissible application limits (see chapter “Speciﬁcation/

Data table”).

- The ﬂoor of the installation room must be level and have suf-

ﬁcient load bearing capacity. Take note of the weight of the

appliance with a full DHW cylinder (see “Speciﬁcation/ Data

table”). A ﬂoor with insufﬁcient load bearing capacity is in

danger of collapse. If the appliance is not level, there may be

a risk of appliance damage.

- The size of the installation room must correspond to the

appliance application limits (see “Speciﬁcation/ Data table”

chapter).

- Observe the safety clearances and protection zones.

- Always leave sufﬁcient space to provide access for instal-

lation, maintenance and cleaning. Observe the required

minimum clearances (see chapter “Preparations/ Siting the

appliance”).

- Ensure the operation of other equipment in the installation

room is not impaired.

- To keep the duct lengths as short as possible, we recommend

installing the appliance close to the kitchen or bathroom.

- To prevent adverse effects from operating noise, never install

the appliance close to bedrooms.

Examples of unacceptable

installations

atmospheres containing ammonia sewage works, pigsties

substances which block the evap-

orator

air containing oil or fat, dust (cement,

flour, etc.). Note: If the air contains hair-

spray (e.g. in hairdressing salons), the

appliance should be operated at shorter

maintenance intervals.

saline environments Coastal installations (< 200m from the

coast) can reduce component service life.

atmospheres containing chlorine

or chloride

swimming pools, salt works

atmospheres containing thermal

water

Formaldehyde in the atmosphere

Certain wood-based materials (e.g. OSB

boards)

Certain insulating materials (e.g. foams

based on urea-formaldehyde (UF in-situ

foams))

Carboxylic acid in the atmosphere

Extract air from kitchens

Components of floor cleaners (e.g. vinegar

cleaner)

Areas in proximity to high fre-

quency machines

inverters for large motors, radar, etc.

Air polluted with these substances can cause corrosion of copper

materials in the refrigerant circuit, especially the evaporator. This

corrosion can lead to failure of the appliance. Any damage to

the appliance caused in this way is not covered by the guarantee

conditions.

Note

The appliance output data are calculated according to

standard, using the intake temperature speciﬁed in the

data table. Below this temperature the appliance efﬁcien-

cy and output decrease. The heat-up time is extended.

Note

You can improve the efﬁciency of the appliance by utilis-

ing the waste heat from other appliances to heat the DHW

cylinder, e.g. boilers, tumble dryers or freezers.

If, for example, a tumble dryer releases dust at the in-

stallation site, the evaporator must be cleaned more

frequently.

Sound emissions

The sound emissions are louder on the air intake and air discharge

sides of the appliance than on the closed sides.

 Never direct the air intake or air discharge towards

noise-sensitive rooms of the house, e.g. bedrooms.

INSTALLATION

Preparation

16 | SHP-A 220-300 Plus www.stiebel-eltron.com

Note

For details on sounds emissions, see chapter "Speciﬁca-

tion/ Data table".

9.4 Siting the appliance

Note

Accessories are located in the corners of the packaging.

Remove the accessories before disposing of the pack-

aging.

 Carefully undo the cardboard packaging at the clips.

D0000034797

1

1 Cardboard packaging clips

The appliance is secured to the pallet with metal brackets and

screws. The metal brackets are hooked on to the feet underneath

the ﬂoor plate of the appliance.

2.

1.

D0000034798

1

1 Metal bracket ﬁxing screw

 Remove the ﬁxing screws of the metal brackets from the

pallet.

 Push the metal brackets a little towards the cylinder centre to

unhook them from the appliance feet.

 Pull the metal brackets out from underneath the appliance.

!

Material losses

Take note of the appliance's weight and centre of gravity.

 Slightly tip the appliance and carefully roll the appliance off

the pallet.

 Position the appliance in the ﬁnal installation site.

Minimum clearances

≥150

≥350

≥400

≥500

D0000020783

 Maintain the minimum clearances.

!

Material losses

The appliance must be positioned vertically to avoid

damage.

The feet under the floor plate of the appliance are

height-adjustable.

 Level the appliance horizontally using the height-ad-

justable feet.

D0000034806

INSTALLATION

Installation

www.stiebel-eltron.com SHP-A 220-300 Plus | 17

ENGLISH

10. Installation

!

WARNING Injury

Incorrect installation can lead to serious injury or mate-

rial losses. Before any work, ensure sufﬁcient clearances

for the installation.

Handle sharp-edged components carefully.

10.1 Water connection

!

Material losses

Carry out all water connection and installation work in

accordance with regulations.

!

Material losses

The corrosion protection provided by the anode can only

be guaranteed when the electrical conductivity of the do-

mestic hot water is within the limits stated in the chapter

"Speciﬁcation/ Data table".

Cold water line

Galvanised steel, stainless steel, copper and plastic are approved

materials. A safety valve is required.

DHW line

Stainless steel, copper and plastic pipework are approved.

!

Material losses

When using plastic pipework, observe the manufacturer's

data and the chapter "Speciﬁcation/ Fault conditions".

 Thoroughly ﬂush the pipework before connecting the ap-

pliance. Foreign bodies, such as welding pearls, rust, sand

or sealant can impair the operational reliability of the

appliance.

!

Material losses

To protect the connections against corrosion the water

connection must be made with ﬂat gaskets. The use of

hemp on connections is not permissible.

The insulated screw ﬁttings included in the standard

delivery serve to prevent and insulate against cathodic

scaling due to highly conductive water.

D0000057018

2 31 4

1 Union nut (G1)

2 Insulating sleeve

3 Flanged pipe (22x1 mm, Copper)

4 Gasket

 Using the gaskets, insulating sleeves and union nuts provid-

ed, connect the ﬂanged pipes included in the standard deliv-

ery to the “Cold water inlet” and “DHW outlet” connections.

 Check the insulated screw ﬁtting for tightness.

Safety valve

The appliance is a sealed unvented DHW cylinder. Provide the

appliance with a pressure relief valve.

 Install a type-tested safety valve in the cold water supply

line. The response pressure of the safety valve must be below

or equal to the permissible operating pressure of the DHW

cylinder.

The safety valve protects the appliance against unacceptable ex-

cess pressure. The diameter of the cold water supply line must be

no greater than the diameter of the safety valve.

 Ensure that the expansion water escaping from the safety

valve can drip into a drain, e.g. a tank or funnel.

Ensure the drain cannot be shut off.

 Size the drain so that water can drain off unimpeded when

the safety valve is fully opened.

 Ensure that the discharge pipe of the safety valve is open to

atmosphere.

 Fit the discharge pipe of the safety valve with a constant

downward slope and in a room free from the risk of frost.

Pressure reducing valve

The maximum pressure in the cold water supply line must be at

least 20% below the response pressure of the safety valve. If the

maximum pressure in the cold water supply line is higher, install

a pressure reducing valve.

Drain valve

 Install a suitable drain valve at the lowest point in the cold

water inlet line.

DHW circulation

The heat losses incurred in the DHW circulation line and the elec-

trical power consumption of the circulation pump reduce the efﬁ-

ciency of the system. The cooled water in the DHW circulation line

mixes with the cylinder content. Where possible, avoid installing

a DHW circulation line. Where that is not possible, the DHW cir-

culation pump must be controlled thermally or by time switch.

Thermal insulation

 Insulate the DHW line and valves against heat loss and to im-

prove energy efﬁciency in accordance with locally applicable

regulations.

 Insulate the cold water supply line to prevent condensate

forming.

INSTALLATION

Installation

18 | SHP-A 220-300 Plus www.stiebel-eltron.com

10.2 SHP-A 300 X Plus : Connection of an external

heat generator

!

Material losses

Even if an external heat generator is connected, do not

disconnect the appliance from the power supply as oth-

erwise it is not protected against frost and corrosion. The

power supply must not be interrupted even in winter,

when it is possible that DHW heating is only being pro-

vided via the external heat generator.

!

Material losses

The integration of an external heat generator via the "heat

source ﬂow" connection must not result in the application

limits being exceeded (see chapter "Speciﬁcation/ Data

table").

The connected external heat generator cannot be con-

trolled by the appliance. The external heat generator

must be controlled externally. Any possibility of exceed-

ing the maximum permissible DHW temperature in the

cylinder (as given in chapter "Speciﬁcation/Data table")

must be prevented.

!

Material losses

Carry out all installation work in accordance with regula-

tions. In Germany, to comply with heating system regula-

tions, an external heat generator must be connected with

a diaphragm expansion vessel and a safety valve between

the external heat generator and the DHW cylinder.

External heat generators may only be connected with DHW priority

control. As part of this, the cylinder temperature must be captured

with an electronic temperature sensor with safety low voltage.

The DHW cylinder of the appliance allows the temperature sensor

to be positioned at one of two different heights in the cylinder.

Using the sensor sleeve in the upper third of the cylinder enables

later DHW heating by means of the external heat generator, than

the lower sensor position.

Heating circuit oxygen diffusion

!

Material losses

Avoid open vented heating systems and underfloor

heating systems with plastic pipes that are permeable

to oxygen.

In underﬂoor heating systems with plastic pipes that are per-

meable to oxygen and in open vented heating systems, oxygen

diffusion may lead to corrosion on the steel components of the

heating system (e.g. on the indirect coil of the DHW cylinder, on

buffer cylinders, steel radiators or steel pipes).

!

Material losses

The products of corrosion (e.g. rusty sludge) can set-

tle in the heating system components, which may re-

sult in a lower output or fault shutdowns due to reduced

cross-sections.

Solar circuit oxygen diffusion

!

Material losses

Avoid open vented solar thermal systems and plastic

pipes which are permeable to oxygen.

With plastic pipes that are permeable to oxygen, oxygen diffusion

can cause corrosion on the steel components of the solar thermal

system (e.g. on the indirect coil of the DHW cylinder).

Water quality, solar circuit

!

Material losses

A glycol-water mixture up to 60 % is permissible for

the solar circuit, provided only dezinciﬁcation-resistant

metals, glycol-resistant gaskets and diaphragm expan-

sion vessels suitable for glycol are used throughout the

installation.

10.3 Condensate drain

Install a condensate drain hose in order to remove the condensate

which forms.

 Connect the condensate drain bend included in the standard

delivery to the condensate drain connection.

 Connect a condensate drain hose to the condensate drain

bend.

A siphon must be installed to prevent aggressive gases from the

sewer entering the appliance. The condensate drain must be in-

stalled with an outlet that opens freely above the siphon.

!

Material losses

Ensure condensate cannot back up.

 Use a condensate drain hose with a diameter great-

er than the diameter of the condensate drain bend.

 Ensure the condensate drain hose is not kinked.

 Route the condensate drain hose with a continuous

fall.

The condensate drain must be open to atmosphere.

 Use a suitable condensate pump if there is insufﬁcient fall.

Take the building characteristics into account.

10.4 Electrical connection

WARNING Electrocution

Carry out all electrical connection and installation work

in accordance with national and regional regulations.

WARNING Electrocution

If the appliance is permanently connected to the power

supply, ensure that the appliance can be separated from

the power supply by an isolator that disconnects all poles

with at least 3mm contact separation. Contactors, circuit

breakers or fuses can be used for this.

WARNING Electrocution

 Observe the safety measures to prevent contact

with dangerous 'live' currents.

INSTALLATION

Installation

www.stiebel-eltron.com SHP-A 220-300 Plus | 19

ENGLISH

WARNING Electrocution

Coming into contact with 'live' components presents a

threat to life. Disconnect the appliance from the power

supply before carrying out work on the control panel.

Prevent the power supply from being switched on while

you are working on the system.

WARNING Electrocution

Insufﬁcient earthing can lead to electrocution. Ensure

the appliance is earthed according to locally applicable

requirements.

WARNING Electrocution

The power cable must only be replaced (for example

if damaged) with an original spare part by a qualiﬁed

contractor authorised by the manufacturer (connection

typeX).

!

Material losses

Install a residual current device (RCD).

!

Material losses

The speciﬁed voltage must match the mains voltage. Ob-

serve the type plate.

!

Material losses

Never connect the appliance to the power supply before

the DHW cylinder is ﬁlled.

The appliance is delivered with a power cable with ﬁtted plug.

10.4.1 Standard connection without external signal transmitter

X0

2

L

N

PE

GNYE

BU

BN

1

2

X3

2

3

1

2

D0000059150

BN Brown

BU Blue

GNYE Green/yellow

10.4.2 Connection options: Operation with external switching

device that interrupts appliance power supply

To ensure cylinder corrosion protection, appliances are equipped

with a maintenance-free impressed current anode as standard. A

maintenance-free impressed current anode, when compared to a

sacriﬁcial anode, offers the greatest protection and saves on costs

for maintenance that would otherwise be required. To ensure cyl-

inder corrosion protection however, the impressed current anode

must be supplied with power permanently.

If the device is to be used with external switching devices (e.g.

external time switch, switched socket, energy management sys-

tem, power-interrupting signal from the power supply utility)

that interrupt the appliance power supply, the impressed current

anode must not be subject to the effects of such devices, but sup-

plied independently. For such cases, the appliance allows separate

power supplies for load (compressor) and electronic (including

impressed current anode) circuits.

 Remove the appliance cover (see chapter “Cleaning and

maintenance/ Removing the appliance cover”).

D0000056083

1

2

1 Strain relief

2 Terminal X0

 Prepare the electric cables in such a way that each cable ter-

minates with a wire ferrule.

 Push the cables through one of the cable entries in the appli-

ance casing.

 Route leads through the strain relief.

 Remove the jumper which leads from X0/N to X0/2 in the de-

livered condition.

 Remove the jumper which leads from X0/L to X0/1 in the de-

livered condition.

X0

2

L

N

PE

L

N

PE

GNYE

BU

BN

1

2

X3

2

3

1

2

L1 / L2 / L3

N

A

B

D0000059152

A Power supply provided by power supply utility or energy

management system for switching the load (compressor)

B Power supply to impressed current anode and PCB

BN Brown

BU Blue

GNYE Green/yellow

 Connect the electric cables for the separate impressed cur-

rent anode power supply to X0/1 and X0/2.

!

Material losses

The power supply to the impressed current anode must

be continuously ensured.

!

Material losses

With regard to the external switching device, the min-

imum runtime and minimum pause times must be ob-

served (see chapter "Appliance description/Minimum

runtime and minimum pause time").

INSTALLATION

Installation

20 | SHP-A 220-300 Plus www.stiebel-eltron.com

10.4.3 Connection options: Operation with external signal

transmitter

!

Material losses

See "Permissible voltage range for external signal trans-

mitters" in the "Speciﬁcation/data table" chapter.

Note

The appliance has a second, higher set temperature

which is selected at the factory. This is activated in the

event of an external switching signal. Set temperature2

is higher ranking than the standard set temperature while

there is an external switching signal.

An external signal transmitter for switching a separate set DHW

temperature (set temperature2) can be connected to terminal

X3/1-2. In the delivered condition, terminal X3/1-2 is not assigned.

If this terminal is connected at the voltage stated in the speciﬁca-

tion (see “Permissible voltage range, external signal transmitter”)

(L to X3/1, N to X3/2), the appliance enables set temperature2.

Following one-off activation (signal present for at least 1minute),

set temperature2 applies for at least 20minutes. Set tempera-

ture2 is ranked higher than set temperature1. When the relevant

DHW set temperature has been reached, the compressor switches

off and remains off for a minimum idle time of 20minutes.

The following diagram illustrates the connections by means of a

sample signal sequence from an external signal transmitter.

Example:

- Water temperature = 55 °C

- Set temperature 1 = 50 °C

- Set temperature 2 = 65 °C

A

1

0

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]

B

1

0 2

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]

D0000034613

A External signal

B Compressor

1 20 min. minimum runtime, set temperature2

2 20 min. minimum compressor idle time

 Remove the appliance cover (see chapter “Cleaning and

maintenance/ Removing the appliance cover”).

D0000056083

1

2

1 Strain relief

2 Terminal X3

 Prepare the electric cables in such a way that each cable ter-

minates with a wire ferrule.

 Push the cables through one of the cable entries in the appli-

ance casing.

 Route leads through the strain relief.

 Connect the cables to X3.

Example 1 : Power supply utility signal with its own phase

X0

2

L

N

PE

L

N

PE

GNYE

BU

BN

1

2

X3

2

3

1

2

L1 / L2 / L3

N

EVU

D0000059154

EVU Power supply utility

BN Brown

BU Blue

GNYE Green/yellow

Example 2 : Photovoltaic signal via on-site relay and phase

routed outside the appliance

Note

The relay in the inverter must meet the following re-

quirements:

- Potential-free relay (240VAC / 24VDC, 1A) with

N/O contact

- Adherence to safety regulations and standards for

safety extra low voltage

- The switching output must be programmed so that

the relay closes or opens if certain limits are exceed-

ed or undershot (inverter output level).

If necessary, check with the inverter manufacturer wheth-

er the product meets the stated criteria.

X0

2

L

N

PE

L

N

PE

GNYE

BU

BN

1

2

1

X3

2

3

1

2

D0000059155

1 Inverter (ﬂoating contact)

BN Brown

BU Blue

GNYE Green/yellow

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STIEBEL ELTRON SHP-A 220-300 (X) Plus Operation Instruction

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