Stiebel Eltron LWZ 5/8 CS Premium Operation Instruction

INSTALLATION

Central ventilation unit with heat recovery

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CONTENTS

SPECIAL INFORMATION

INSTALLATION

1.

General information ��3

1.1

Relevant documents 3

1.2

Information on the appliance 3

1.3

Standardised output data 3

2.

Safety ��4

2.1

General safety instructions 4

2.2

Instructions, standards and regulations 4

2.3

Operation of the appliance in buildings with combustion equipment 4

3.

Appliance description ��5

3.1

Standard delivery 5

3.2

Required accessories 5

3.3

Additional accessories 5

3.4

Appliance functions 5

4.

Preparation ��7

4.1

Installation site 7

4.2

Air routing 8

4.3

Sound emissions 8

4.4

Electrical installation 10

4.5

Oxygen diffusion 10

4.6

Transport 10

5.

Installation �� 11

5.1

Siting the function module 11

5.2

Installing the cylinder module 13

5.3

Connecting modules 14

5.4

Heating water connection 17

5.5

Water connection 18

5.6

Filling the DHW cylinder 18

5.7

Option: Connecting the second DHW cylinder 18

5.8

Condensate drain and overpressure valve 18

5.9

Electrical connection 19

5.10 Filling and venting the heating system 22

5.11 Fitting the appliance casing 24

5.12 Outdoor air and exhaust air hose installation 25

5.13 Installing extract air and supply air pipes 26

6.

Commissioning �� 26

6.1

Checks before commissioning 27

6.2

Filter insertion 27

6.3

Commissioning via the programming unit 28

6.4

Recommissioning 28

7.

Appliance shutdown �� 28

8.

Troubleshooting �� 29

8.1

Exhaust air fan is catching 29

8.2

Cleaning defrost pan 29

8.3

Circulation pump 29

8.4

Fault messages in the programming unit 29

9.

Maintenance and cleaning �� 30

9.1

Cleaning the air/air heat exchanger 30

9.2

Cleaning the outdoor air filter 30

9.3

Cleaning the evaporator fins 30

9.4

Cleaning the condensate drain 31

9.5

Cleaning the filter ball valve 31

9.6

Replacing the anode 32

9.7

Checking the diaphragm expansion vessels 32

10.

Specification �� 33

10.1 Dimensions and connections 33

10.2 Connection examples 34

10.3 Application range 34

10.4 Sensor resistance values 34

10.5 Wiring diagram 35

10.6 Output graph 38

10.7 Available external head of the circulation pump 39

10.8 Fan curve 39

10.9 Data table 40

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SPECiaL iNfOrmaTiON | iNSTaLLaTiON

General information

SPECiaL iNfOrmaTiON iNSTaLLaTiON

- Observe all applicable national and regional regulations and instructions during installation.

- The appliance is not approved for outdoor installation.

- Observe the requirements concerning the installation room (see chapter „Specification / Data table“).

- Observe minimum clearances (see chapter „Preparations / Installation site“).

- The connection to the power supply must be in the form of a permanent connection. Ensure the appliance can be separated from the power supply by an isolator that disconnects all poles with at least 3 mm contact separation.

- Observe the fuse protection required for the appliance (see chapter „Specification / Data table“).

- Drain the appliance as described in chapter

„Shutdown“.

- 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 unimpeded 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.

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1. General information

These instructions are intended for qualified contractors.

1.1 Relevant documents

338915 Operation

338916 Commissioning / Notification list

1.2 Information on the appliance

Connections

Symbol meaning

Inlet / intake

Drain / outlet

Heating

Condensate

Safety valve drain

Solar thermal

Outdoor air

Exhaust air

Extract air

Supply air

1.3 Standardised output data

Information on determining and interpreting the specified standardised output data

1.3.1 Standard : EN 13141-7 , EN 14511 , EN 16147

The output data specifically mentioned in text, diagrams and technical datasheets has been calculated according to the test conditions of the standards shown in the heading of this section.

However, there is a deviation from the standard EN 14511 in the performance specifications for inverter driven air source heat pumps with source temperatures > -7 °C, as these are partial load values. The associated percentage weighting in the partial load range can be found in EN 14825 and EHPA quality label regulations.

Generally, the test conditions stated above will not fully match the conditions found at the installation site of the system user.

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iNSTaLLaTiON

Safety

Depending on the chosen test method and the extent to which this method differs from the test conditions defined in the first paragraph of this section, any deviations can be considerable.

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.

Confirmation of the specified output data can only be obtained if the test conducted for this purpose is also performed in accordance with the test conditions defined in the first paragraph of this section.

2. Safety

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

2.1 General safety instructions

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

2.1.1 Electrical installation

WARNING Electrocution

Carry out all electrical connection and installation work in accordance with national and regional regulations.


Isolate the appliance from the power supply prior to commencing any work in the interior of the appliance.


The connection to the power supply must be in the form of a permanent connection. The appliance must be able to be separated from the power supply by an isolator that disconnects all poles with at least 3 mm contact separation. This requirement can be met by contactors, isolators, fuses, etc.

!

Material losses

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

2.2 Instructions, standards and regulations

Note

Observe all applicable national and regional regulations and instructions.

WARNING Burns

In connection with the fire prevention regulations concerning the installation of ventilation systems, observe all country-specific regulations and requirements. In

Germany, these are particularly the building regulation guideline on fire prevention requirements of ventilation systems in its applicable version.

2.3 Operation of the appliance in buildings with combustion equipment

If the building contains combustion equipment (tiled stoves, fireplaces, etc.), approval must be obtained from the responsible flue gas inspector. The flue gas inspector assesses whether all statutory regulations are observed. We recommended that the flue gas inspector be involved at an early stage in the design process.

For simultaneous operation of combustion equipment and a ventilation unit, we recommend choosing approved room sealed combustion equipment. Planning should always include the option of installing safety equipment (e.g. differential pressure switch).

A 5-core cable must be routed from the combustion equipment to the appliance or to the control panel fuse box to which the appliance is connected.

!

WARNING Injury

Ensure that no flue gas can enter the installation room and that combustion equipment will always be supplied with sufficient combustion air. Tested safety equipment must be installed to monitor the chimney draught and to switch off the ventilation unit in the event of a fault.

Requirements of the safety equipment

The equipment for differential pressure monitoring should fulfil the following requirements:

- Monitoring of the differential pressure between the connection piece to the chimney and the room where the combustion equipment is installed.

- Possibility of matching the shutdown value for the differential pressure to the minimum draught requirement for the combustion equipment.

- Floating contact to switch off the ventilation or heat pump function.

- Optional connection of a temperature capturing device so that differential pressure monitoring is only enabled when the combustion equipment is in operation and so that unwanted shutdowns due to environmental influences can be avoided.

Note

Differential pressure switches that use the pressure differential between the outdoor air pressure and the pressure in the room where the combustion equipment is sited as a response criterion are not suitable.

f XD03-13/14 : Connect the safety equipment using a floating contact.

Triggering the safety equipment may shut down the domestic ventilation system and block the integral heat pump of the appliance.

You can determine how the appliance will behave following a triggering of the safety equipment using the „STOVE / FIREPLACE“ parameter.

If you want the entire appliance to be switched off when the safety equipment is triggered, you can integrate the safety of equipment in the same way as an underfloor heating system thermostat (see chapter „Specification / Connection examples“).


iNSTaLLaTiON appliance description

As the appliance can produce negative pressure in the installation room, we recommend using a tightly sealing door between the installation room and the living space containing combustion equipment. If, due to its use, the installation room is connected to the extract air system, you must also make special arrangements for a supply air vent in the installation room, to prevent any further increase in the negative pressure in this room. The negative pressure created by the appliance in the installation room is heavily influenced by the pressure drop in the outdoor air line.

For this reason, the outdoor air line in particular should be as short as possible.

Note

The maximum permissible pressure drop (see chapter

"Specification / Data table / Max. pressure drop, outdoor air") must not be exceeded.

During regular operation, the ventilation unit promotes a balanced air flow rate and no pressure differences occur. Do not switch off the mechanical ventilation component of the appliance if the combustion equipment is in operation.

!

WARNING Injury

If no safety equipment is installed, open the parameter

"STOVE / FIREPLACE" and select the option "N/C MONI-

TORING". This option switches off the heat pump as soon as mechanical ventilation is deactivated.

!

WARNING Injury

If you notice flue gas escaping from the combustion equipment, switch off any air extraction appliances, e.g. exhaust air extractor hoods, exhaust air tumble dryers, the central vacuum cleaning system and the ventilation unit. Interrupt any voltage supply to the ventilation unit, including the integral heat pump, via the fuses/MCBs in your fuse box/distribution board.

f Open windows and doors.

The safety equipment also switches off the DHW heating. If the dual mode point is undershot, the emergency/booster heater for

DHW heating switches on, resulting in an increased electrical energy demand.

3. Appliance description

The appliance comprises a function module and a cylinder module that are supplied as separate shipping units. The wider module with the air hose connections in the cover is the function module.

The components required for installation are in a separate carton inside the function module packaging.

3.1 Standard delivery

!

Material losses

Never install the push-fit connectors in the DHW line.

Never install the push-fit connectors to the solar flow or solar return connections. Only install the push-fit connectors in the heating circuit.

The following are delivered with the appliance:

- Operating instructions

- Installation instructions

- Notification list

- Transport aid, comprising two angled brackets with screws for fixing to the appliance

- Programming unit

- Outside sensor

- Four adjustable feet for the cylinder module

- Eight sliding blocks for easier positioning of the appliance

- Hose clips to secure the air hoses

- Adhesive tape to seal the inner hose to the hose connector

- PE plate for connection to a geothermal heat exchanger or an external fresh air intake

- Fixing materials (screws, washers, etc.)

- Two straight push-fit connectors for the hydraulic connection of the function and cylinder modules

- Sealing tape for reducing noise from the gap between the function module and cylinder module

For connection to the heating circuit:

- Two straight push-fit connectors

- One filter ball valve

- One ball valve

- Two 90° push-fit connectors

- Four straight pieces of pipe with G 1 union nut

3.2 Required accessories

- Air hose with thermal insulation, 4 m

- Thermally insulated wall outlet with external wall grille

3.3 Additional accessories

- Additional programming unit with wall mounted casing

- Spare filter set

- Diverter hood (enables the appliance to be sited in rooms with head heights between 2.2 and 2.5 m)

- Silencer DN 315

- Segmented anode

- DHW circulation pipe set

- Filter box (for installation in round DN 160 ventilation pipes)

- ISG: Internet Service Gateway

- PK 10 : Condensate pump

- Safety temperature controller for underfloor heating system

- Temperature sensor for the second DHW cylinder (sensor type Pt1000)

- ZKA WP : Condensate drain with outlet siphon

3.4 Appliance functions

The supply air fan induces outdoor air into the appliance. The extract air fan draws stale air from the living areas into the appliance. Outdoor air and extract air are routed through particle air filters into separate ducts of a cross-countercurrent heat exchanger. Inside the cross-countercurrent heat exchanger, the outdoor air is heated and channelled into the living space as supply air.

The extract air cools down inside the cross-countercurrent heat exchanger and is routed as exhaust air first through the evaporator and then outdoors.

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iNSTaLLaTiON appliance description

The cross-countercurrent heat exchanger ensures that up to 90 % of the heat in the extract air is returned with the supply air into the living space.

In addition, heat is extracted from the outdoor air by means of an air source heat pump. The energy extracted from the outdoor air in the evaporator is transferred via the condenser to the central heating or DHW system.

In the case of low outside temperatures or high heat demand from the central heating or DHW heating systems, the additional heat demand is covered by an electric emergency/booster heater.

3.4.1 Utilising solar energy

A solar heat exchanger is integrated into the appliance. You can connect a solar thermal system to this coil by means of the appliance solar flow and solar return connections. Solar backup can be provided both in central heating mode and DHW mode. A differential temperature controller for the solar thermal system is integrated in the appliance control unit.

!

Material losses

In some operating situations, the solar circuit pump will be operated cyclically.

- Area cooling means: underfloor heating systems, wall heating systems and generally all heating systems that have no means of draining any condensate. The set flow temperature of at least 18 °C will only be enabled if the relative humidity in the room permits this. Otherwise the flow temperature will be limited. An operative programming unit with terminal address 1 or 2 must be provided for every heating circuit with area cooling, otherwise that circuit will be disabled.

- Fan convector means: Fan convectors or other heating/cooling elements that have a facility for collecting condensate and draining it to a specific place. Thermally insulate heating pipes with vapour diffusion-proof material. The flow temperature must be at least 7 °C.

!

Material losses

If for area heating systems radiators or convectors without condensate drain setting "FAN CONVECTORS" is selected in the "COOLING SYSTEM" menu, there would be a risk of severe moisture-related damage through condensation.

3.4.2 Cooling

The refrigeration unit of the heat pump may be reversed. In cooling mode, heat may be extracted from the heating circuit and transferred to the outdoor air.

For cooling we recommend separating the streams of the heating circuits and those of the appliance. We also recommend installing a buffer cylinder. The buffer cylinder must be suitable for cooling, i.e. the buffer cylinder must be insulated against vapour diffusion.

Cooling without buffer cylinder is only possible if a coordinated heating system with a sufficiently high flow rate and adequate cooling draw-off is installed. See „Min. flow rate, cooling (without buffer cylinder)“ and „Min. living area, active cooling (without buffer cylinder)“ in chapter „Specification / Data table“.

If cooling is delivered via the underfloor heating system, both underfloor heating system and actuators must be suitable for cooling. It must be possible to connect a cooling signal, so that the minimum cooling area is always opened for cooling.

If cooling is delivered by means of fan convectors, these must have a sufficiently high rating. The minimum flow rate must be ensured.

The minimum flow rate for cooling must not be ensured by means of the overflow valves; instead it must be ensured via the heating circuits.

The „COOLING“ menu will only be activated when connecting an external programming unit. The menu is only visible on the external programming unit. During commissioning, the external programming unit must be assigned to the heating circuit.

Active cooling is impossible without an external programming unit. Only the programming units with selected terminal address

1 or 2 transmit temperature and humidity values to the appliance controller.

When activating cooling mode, assign the type of heat transfer to the heating circuits that will be active during cooling.

Conventional thermostatic valves are closed when cooling is required. Cooling will be possible when the thermostatic or zone valves are set to cooling, provided they offer such a function. Alternatively, these valves may also be opened via the cooling signal

(XD03, „Cool“ output). Temporarily, valves may also be opened fully for cooling.

Cooling is not possible in manual mode.

Cooling function

Parameter „COOLING MODE“ must be set to „ON“. Cooling is enabled when the appliance is in summer mode and the outside temperature exceeds the set room temperature for heating (parameter „ROOM TEMPERATURE DAY“ in menu „HEATING / ROOM

TEMPERATURES HC1“ or „ROOM TEMPERATURES HC2“) for 2 hours by 3 K.

If the room temperature is then higher by the value set under

„HYST. ROOM TEMP.“ than the set room temperature for cooling

(parameter „ROOM TEMPERATURE DAY“ in menu „COOLING /

ROOM TEMPERATURES HC1 or ROOM TEMPERATURES HC2“), then the system prepares for cooling. The display shows a snowflake.

The circulation pump starts, the three-way valve changes over to the heating circuit and the „cooling“ output is activated in order to, for example, open the thermostatic valves in the rooms to be cooled.

The compressor starts if the flow temperature lies higher than the set flow temperature for cooling by the amount of the „Hyst. flow temp.“. The compressor stops when it is lower than this by the amount of flow temperature hysteresis.

The dew point is monitored in area heating systems. The dew point is that temperature at which humidity in the air begins to condensate. The compressor stops once the flow temperature is within 2 K of the dew point. The compressor will be enabled if it lies above this value by the hysteresis set in parameter „HYST.

FLOW TEMP.“.


iNSTaLLaTiON

Preparation

3.4.3 Frost protection for the cross-countercurrent heat exchanger

A heat exchanger in the path of the outdoor air flow preheats the outdoor air, and thus prevents the cross-countercurrent heat exchanger from freezing up.

3.4.4 Buffer mode for air heating

If a heating system with a low draw-off rate and little thermal capacity is used, e.g. air heating coil through which the domestic ventilation flow is routed, the lower section of the DHW cylinder can be utilised as a buffer cylinder. Excess heat can be temporarily stored there, thereby reducing compressor cycling. This function can be activated in the „DHW“ menu using the „DHW BUFFER

MODE“ (P84) parameter.

You can determine the operating mode by positioning the cylinder temperature sensor.

1

The room in which the appliance is to be installed must meet the following conditions:

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

- The floor must have sufficient load bearing capacity. In addition to the appliance weight, also take that of the cylinder content into account.

- The substrate must be horizontal, level, solid and permanent.

- When installing the appliance inside a boiler room ensure that the boiler operation is not impaired.

- The quantity of refrigerant makes it necessary to observe the minimum volume of the installation room (see chapter „Specification / Data table“).

!

Material losses

The installation room floor must be water resistant. During appliance operation, the outdoor air releases up to

50 l of condensate per day. In the case of deficient or inadequate maintenance, water may escape. We recommend installing a drain in the floor of the installation room.

4.1.1 Minimum clearances

Outdoor/exhaust air connection with diverter hood

2

1 Cylinder temperature sensor - upper position

2 Cylinder temperature sensor - lower position

If the cylinder temperature sensor is in the upper position, approx.

100 l water are always maintained at the required DHW temperature. The remaining cylinder capacity is used as a heating water buffer and have a temperature corresponding to the heating flow temperature.

If the cylinder temperature sensor is in the lower position, the entire cylinder content is always maintained at the required DHW temperature.

4. Preparation

4.1 Installation site

To be able to open the front door freely, maintain a minimum clearance on the r.h. side and in front of the appliance. The required room height depends on whether the reversing hood is used or whether the hoses are connected directly (see chapter „Installation site / Minimum clearances“). Maintain a minimum clearance on the r.h. side of the appliance for service work.

f Observe the wall outlet installation instructions.

f Observe the air routing accessory installation instructions.

Never install the appliance in wet rooms.

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iNSTaLLaTiON

Preparation

Outdoor/exhaust air connection with air hose

R 365

≥500

Outdoor air mechanical ventilation connection option

1

Connecting outdoor air to geothermal heat exchanger

≥2°

≥300

1 Filter box

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1

≥300

1 Filter box

4.2 Air routing

Prevent air stream „short circuits“. The air intake and discharge apertures in the external walls should be arranged around corners. When installing the air intake and discharge apertures on the same side of the building, maintain a minimum clearance of at least 2 m between apertures. Where that is impossible, create a separation between the air streams, e.g. by a separating wall or shrubs between the intake and discharge apertures.

Never align the apertures toward neighbouring living room or bedroom windows.

4.3 Sound emissions

Sound insulation for rooms adjacent to the installation room

The appliance is quiet in normal operation. When operating at its application limits under full load, sound emissions can occur due to the power density. These sound emissions may cause a disturbance in neighbouring rooms. This is especially the case if the installation room adjoins a living room or bedroom. To prevent noise pollution, sound attenuation measures are necessary, e.g. sound attenuation of a higher standard for the internal wall.

Pipe fixings and wall outlets must have structure-borne noise attenuation. For the wall between the installation room and the living space, we recommend a wall structure that ensures the following sound-absorbing coefficient:

- 45 dB(A) for adjacent living rooms and bedrooms

- 40 dB(A) for other rooms

Doors should be of noise protection class SK 3.

If the unit backs onto an adjacent room, we recommend the following sound-absorbing coefficient:

- 55 dB(A) for adjacent living rooms and bedrooms

- 50 dB(A) for other rooms

A passage to the neighbouring room is not recommended.


iNSTaLLaTiON

Preparation

The floor between the installation room and living areas must have carefully applied anti-vibration separation. Ensure that no pipes are routed on or in the wall and that the air ducts have anti-vibration separation.

If the unit installation room is included in the building ventilation system, the design must include an extract air vent and supply air vent for this room. To avoid the need for an overflow aperture in the door, the supply air and extract air flow rates must be balanced.

Note

The unit can seem loud if operated in an unfinished building without doors. This is because the fixtures and fittings which will provide sound attenuation are not yet in place; once the building is occupied this should no longer occur.

Anti-vibration separation

With the anti-vibration feet, it is possible to install the appliance on floating screed, as long as this has been applied correctly. If necessary provide separation.

If the appliance is positioned on a wooden beam ceiling, you must take special steps to prevent structure-borne noise transmission.

Installation on foundations

1

2 3 4

Sound attenuation measures 45 dB(A)

A sound-absorbing coefficient of 45 dB(A) can be achieved using, for example, a wall of lightweight, timber frame construction with full insulation. The cross-section of the timber supports should be

60 x 60 mm. The wall must have plasterboard panelling on both sides, with a thickness of 12.5 mm on one side and 10 mm on the opposite side.

1

1 Concrete base

2 Impact sound insulation

3 Floating screed

4 Screed recess

The separation can also be made later, by cutting the screed all the way around the appliance.

Installation on screed with impact sound insulation

2

2

3

3

1 Timber frame supports 60 x 60 mm

2 Gypsum fibre board 12.5 mm

3 Gypsum fibre board 10 mm

Sound attenuation measures 55 dB(A)

A sound-absorbing coefficient of 55 dB(A) can be achieved using, for example, a twin wall of lightweight, timber frame construction with full insulation and 30 mm parting line. The cross-section of the timber supports should be 60 x 60 mm. The wall must have

12.5 mm plasterboard panelling on both sides.

1

2 3

3

1

2 3 4

1 Concrete base

2 Impact sound insulation

3 Floating screed

4 Screed recess f Protect all pipe fixings and wall transitions with anti-vibration insulation.

3

3

1 Parting line 30 mm

2 Timber frame supports 60 x 60 mm

3 Gypsum fibre board 12.5 mm www.stiebel-eltron.com LWZ 5/8 CS Premium | 9

iNSTaLLaTiON

Preparation

4.4 Electrical installation

Permission must be obtained from your local power supply utility.


Carry out all electrical connection and installation work in accordance with national and regional regulations.


The appliance contains inverters (e.g. variable speed compressors, high efficiency circulation pumps or high efficiency fans). In the event of a fault, inverters can cause DC residual currents. If RCDs are provided, they have to be type B AC/DC-sensitive.

A DC residual current can block type A RCDs.

f Ensure that the appliance power supply is disconnected from the distribution board.

Electrical data is provided in the chapter „Specification / Data table“.

All electrical connection and installation work must be carried out in accordance with VDE regulations (DIN VDE 0100) [or local regulations], the rules of your local power supply utility, and relevant national and local regulations.

The cable cross-section must be sized for the maximum fuse protection of the compressor (see „Specification / Data table“).

Note

Route the power cables and control cables separately.

Note

Provide separate fuses for the power circuits for the appliance, the electric emergency/booster heater and the control unit.

4.6 Transport

!

Material losses

If the appliance is transported without packing and without using a pallet, its outer casing may be damaged.

Remove the side panels and doors in such cases.

4.6.1 Function module

To protect the appliance against damage, transport it vertically inside its packaging. Where space is restricted, you can also tilt the appliance at an angle to move it.

To make handling easier, you may attach a transport aid on the back of the function module. This comprises two angled brackets.

f Fit one angle bracket each vertically on the l.h. and r.h. side.

1

4.5 Oxygen diffusion

!

Material losses

Do not use open vented heating systems. Use oxygen diffusion-proof pipes in underfloor heating systems with plastic pipework.

In underfloor heating systems containing permeable plastic pipes, or in open vented heating systems, oxygen diffusion can cause corrosion to the steel components of the indirect coil in the DHW cylinder, steel radiators or steel pipes.

!

Material losses

The products of corrosion (e.g. rusty sludge) can settle in the heating system components, which may result in a lower output or fault shutdowns due to reduced crosssections.

1 Transport aid f Slide a robust pipe through the holes inside the transport aids to create a handle.

f The transport aid can also be used in connection with a crane/hoist to transport the appliance to the installation location.

4.6.2 Cylinder module

!

Material losses

During transport, never hold the cylinder module by its connection pipes, as these would bend out of shape.

Note

We recommend the transport of the cylinder module on its pallet to the installation location. The pallet offers more places to hold than the cylinder module casing.

There are two grip recesses at the top of the back panel.

1

1 Recessed grips


iNSTaLLaTiON installation

5. Installation

5.1 Siting the function module

!

Material losses

Never tilt the appliance excessively. Contacts between the casing and the floor can damage the paintwork.

1

2

1

1 Fixing screw on the r.h. side panel f At the top of the gap between door and appliance, undo the fixing screw for the r.h. side panel.

f Carefully push the the r.h. side panel up and remove the side panel from the appliance.

1

1 Support screws of the fascia framework

2 Fascia fixing screws

The fascia and fascia frame that are fitted to the front of the appliance later, hang for shipping from the factory on the l.h. side of the function module.

f Lift the fascia frame slightly and remove the fascia from the function module.

f Undo both support screws from which the fascia was hung from the lateral cross bar of the function module. If these support screws are not removed they would be in the way when pushing the function and cylinder modules together and securing them with screws. Put the support screws aside and use one of these later to secure the fascia frame to the appliance.

f Undo both lateral fascia fixing screws with which it is secured to the fascia frame.

f Pull the fascia slightly upwards and then forwards out of the fascia frame.

f Remove the wooden braces secured to the pallet which prevented the appliance from slipping during shipping.

f Open the function module door.

1 Fixing screws of the door f Undo the fixing screws of the door. f Remove the door.

f Remove the function module carefully from the pallet.

f Push the sliding blocks supplied under the adjustable feet, so the function module can be moved more easily to the required position.

f Remove the sliding blocks once the appliance is in its intended location.



Outdoor air mechanical ventilation connection option

Note

Observe the minimum clearance at the back of the appliance. See chapter "Preparations / Installation site /

Minimum clearances".

2.

1.

3.

1 Upper front panel

2 Cross-countercurrent heat exchanger

3 Outdoor air filter cassette f Undo the screws on the right-hand side of the top front panel.

f Pivot the top front panel open to the left.

f Undo the screws on the cover which seals off the outdoor air mechanical ventilation option port on the back of the function module.

f Remove the cover.

f Press the core piece inward, carefully break it out and remove it.

f Smooth out the line of breakage.

f Clean the aperture.

f Push the folded spiral-seam tube through the hole

(max. 30 mm deep).

f Seal the gap between the folded spiral-seam tube and the

EPS insulation with sealing tape.

f Pull out the cross-countercurrent heat exchanger.

f Grasp the outdoor air filter cassette by the grip holes and pull it out.

f Push the plate supplied into the appliance in place of the outdoor air filter cassette.

Note

Fit a filter in the outdoor air duct to replace the internal outdoor air filter that was removed previously. An air filter box with coarse particle filter mat is available as an accessory.

Fit the joining bracket at the back at the bottom f Using wire cutters, cut through the spacers of the knock-out aperture on the back panel of the function module.

The EPS insulation becomes visible once the knock-out panel has been removed.

f Insert the joining bracket at the rear l.h. adjustable foot of the function module between the appliance floor and the adjustable foot. Secure the joining bracket with two screws to the back panel of the function module.

f Level the function module vertically by turning the height-adjustable feet.

!

Material losses

The heat exchanger situated behind the EPS insulation must not be damaged.

f Never cut in the bottom third of the circular groove sketched out on the EPS insulation.

f Using a knife, carefully cut along the upper two thirds of the dotted groove marked out on the EPS insulation.



Attaching sealing tape for noise reduction f Level the cylinder module vertically by turning the heightadjustable feet. Arrange the bottom panel so that it is 4 to

5 mm higher than the bottom panel of the function module.

This is the amount by which the cylinder module drops when it is being filled with water.

Note

The adjustable feet must not be fully screwed in, otherwise you will not be able to push the joining bracket between the bottom panel and the foot.

f To reduce noise coming from between the function module and the cylinder module, affix the supplied sealing tape all around on the left side of the function module.

5.2 Installing the cylinder module

f Undo the screws underneath the pallet with which the cylinder module is secured to the pallet.

!

Material losses

Never tilt the cylinder module excessively. Contacts between the casing and the floor can damage the paintwork.

f Undo the cover screws on the cylinder module.

f Reach through the port on the r.h. side of the cylinder module and push the cylinder module cover upwards.

f Remove the cylinder module cover.

2

1

1

2

3

1 Captive nut on the bottom of the cylinder module

2 Adjustable foot with nut for fitting with an open-ended spanner

3 Sliding block f Carefully tip the cylinder module far enough to enable the adjustable feet to be inserted.

f Insert the adjustable feet into the captive nuts with which the cylinder module was previously secured to the pallet.

f Remove the cylinder module carefully from the pallet.

f Push the sliding blocks supplied underneath the adjustable feet.


3 4 5

1 Front panel of the cylinder module

2 Screw for securing the front panel

3 DHW flow

4 Heating flow

5 Common return f Lift the front panel of the cylinder module slightly and remove it from the cylinder module.

f Remove the protective caps from the three pipes (DHW flow, heating flow, common return); these are located in the lower section on the r.h. side of the function module. Later on, these pipes connect the function module and cylinder module hydraulically.



Note

The pipes must protrude at least 40 mm. If necessary, remove any protruding foam insulation.

Removing the side panel of the cylinder module (optional)

The side panel of the cylinder module only needs to be removed if you want to install the DHW circulation set available as an accessory.

1

1 Screw for securing the side panel f Undo the screws securing the side panel.

f Lift the side panel slightly and remove it from the cylinder module.

Pushing the cylinder module towards the function module f Push the cylinder module carefully towards the function module, so that the rear r.h. adjustable foot of the cylinder module is near the recess in the joining bracket.

5.3 Connecting modules

Cylinder temperature sensor and anode cable f Remove the cable tie that tie together the electrical cables of the anode terminal and the cylinder temperature sensor lead.

f Pull the connecting cables/leads of the anode and the cylinder temperature sensor through the aperture located on the top r.h. side in the cylinder module.

1 f Push the cylinder temperature sensor from the top through the aperture in the thermal insulation.

f Insert the cylinder temperature sensor into the lower cylinder sensor well.

Note

It is possible that the cylinder module and the function module will still be too far apart to be able to insert the cylinder temperature sensor into the sensor sleeve.

If so, you can insert the cylinder temperature sensor into the sleeve at a later point. What is important is that you route the sensor lead through the insulation before you install the terminal bracket.

The top sensor sleeve is required either in connection with buffer operation on convector heaters (see chapter „Settings / DHW /

DHW buffer mode“) or for economy mode (see chapter „Connecting internal cables“).

Pushing the cylinder and the function modules together

Note

An air hose to capture the differential pressure runs along the l.h. side of the function module. This air hose must run inside the curved groove cut into the thermal insulation.

f Ensure that this air hose is seated correctly.

Note

The adjustable feet must not be fully screwed in, otherwise you will not be able to push the joining bracket between the bottom panel and the foot.

Note

Avoid damaging the sealing tape which is attached to the side of the function module to reduce noise.

f Push the cylinder module further towards the function module, so that the rear r.h. adjustable foot of the cylinder module is pushed into the recess in the joining bracket.

The lower joining bracket ensures that the cylinder module is automatically pushed into its final position.

f Level the cylinder module and the function module vertically to the same height by turning the adjustable feet.

Note

The cylinder module drops 4 to 5 mm when its cylinder is filled.

Turning anti-clockwise exposes more of the adjustable feet, meaning the appliance moves upwards. The cylinder module must be snug against the function module.

1 Aperture in the thermal insulation for sensor lead of the cylinder temperature sensor



Connection top back

1

Connecting the function module and the cylinder module hydraulically

1

2

2

1 Joining plate

2 Horizontal locking bracket f Connect the function module and the cylinder module at the top back by positioning joining plate and inserting two screws each through the joining plate into the function module and the cylinder module.

Fitting the horizontal locking bracket to the front f Connect the function module and cylinder module at the front by securing one horizontal locking bracket each at the top and bottom using screws.

!

Material losses

Before filling, tighten the screws only lightly so that the paint finish is not damaged when the cylinder module moves down during filling. Tighten the screws after filling.

3

1 Door lock

2 Fixing screws of the lower front panel

3 High limit safety cut-out retaining bracket

A door lock is located above the door of the function module.

f Push the door lock at the front upwards.

f Pull the door lock backwards and then upwards to unhook the door lock.

f Open the function module door.

f Undo the fixing screws from the lower front panel.

f Remove the lower front panel.

To make yourself room for the assembly, you can temporarily unhook the high limit safety cut-out retaining bracket.

f Undo the screws on the high limit safety cut-out retaining bracket.

f Unhook the high limit safety cut-out retaining bracket from the slots, pull it out of the appliance and hook it into the same slots, but this time from the outside.



1 2

1

2

3 4

1 Retainer

2 Screw cap

3 Gap between screw cap and connector body

4 Connector body

3

1 DHW flow

2 Heating flow

3 Common return

The hydraulic connection between the function and cylinder module is provided by three pipes: DHW flow, heating flow and common return.

f Make sure that the caps have been removed from the pipes.

5.3.1 How the push-fit connectors work

!

Material losses



!

Material losses

Tighten the screw cap of the push-fit connector by hand.

Never use a tool.

Material losses

To ensure the push-fit connector is held securely, pipes with a surface hardness > 225 HV (e.g. stainless steel) must have a groove.

f Using a pipe cutter, cut a groove (depth approx. 0.1 mm) at a defined distance from the end of the pipe.

- Pipe diameter 22 mm : 17 ± 0.5 mm

- Pipe diameter 28 mm : 21 ± 0.5 mm

!

Material losses

Support sleeves are required when using plastic pipes.

The push-fit connectors are equipped with a retainer with stainless steel serrations and an O-ring for sealing. The push-fit connectors also have a „twist and secure“ function.

Simply turning the screw cap by hand will secure the pipe in the connector and push the O-ring against the pipe to seal it.

Making the push-fit connection

The connector must be in its relaxed position before the pipe is inserted. In this position, there is a small gap between the screw cap and connector body.

Ø Pipe diameter

A Insertion depth mm mm

22

≤ 38

!

Material losses

Pipe ends must be deburred.

f Always use a pipe cutter to trim pipes.

f Push the pipe past the O-ring into the push-fit connector until it reaches the prescribed insertion depth.

f Tighten the screw cap fully to the joiner body until fingertight. This secures the push-fit connection.

Undoing the push-fit connection

If the push-fit connectors later need to be undone, proceed as follows: f Turn the screw cap anti-clockwise until there is a narrow gap of approx. 2 mm. Press the retainer back with your fingers and hold on to it.

f Pull out the inserted pipe.

5.3.2 Fitting the push-fit connectors

An elbow push-fit connector is prefitted on the heating flow in the function module.

f Fit the elbow push-fit connector onto the heating flow port on the r.h. side of the cylinder module.

f Push a straight push-fit connector on each of the two pipes on the r.h. side of the cylinder module.


iNSTaLLaTiON installation f Connect both of the free pipes inside the function module to the push-fit connectors that you previously attached to the cylinder module pipes.

f Refit the high limit safety cut-out retaining bracket from the inside using the slots and secure the bracket.

5.4 Heating water connection

Note

The use of non-return valves in the charging circuits between the heat generator and the buffer or DHW cylinder can impair the function of the integral multifunction assembly (MFG) and lead to faults in the heating system.

f Only use our standard hydraulic solutions for the installation of the appliances.

The heating system must be connected by a qualified contractor in accordance with the water installation drawings, which are part of the technical guides. You can use the push-fit connectors supplied or ball valves to make the connection of the flow and return.

Note

Deburr the pipe ends.

A filter ball valve is provided for the return. Two union nuts and two short flanged copper pipe ends are provided for fitting a ball valve.

f As a suitable point, install an air vent valve at the highest point of the heating system.

f Thoroughly flush the pipework before connecting the appliance. Foreign bodies such as welding pearls, rust, sand, sealant, etc. can impair the operational reliability of the appliance, and can lead to the condenser becoming blocked.

f Remove the protective caps from the heating flow and heating return connections.

„Heating return“ connection

3

4

3

2

1

3

6

3

2

5 f Connect the flanged pipe with a push-fit connector to the heating circuit return.

„Heating flow“ connection f Using a push-fit connector, connect one of the flanged pipes supplied to the connection for the heating flow.

f Connect a ball valve to the flanged pipe end.

f Connect a flanged pipe to the other side of the ball valve.

f Connect the flanged pipe with a push-fit connector to the heating circuit flow.

Thermal insulation f Provide thermal insulation in accordance with current regulations.

Water quality

Carry out a fill water analysis before filling the system. This may, for example, be requested from the relevant water supply utility.

To avoid damage as a result of scaling, it may be necessary to soften or desalinate the fill water. The fill water limits specified in chapter „Specification / Data table“ must always be observed.

f Recheck these limits 8-12 weeks after commissioning and as part of the annual system maintenance.

Note

With a conductivity > 1000 μS/cm, desalination treatment is recommended in order to avoid corrosion.

Note

If you treat the fill water with inhibitors or additives, the same limits apply as for desalination.

Note

Suitable appliances for water softening, as well as for filling and flushing heating systems, can be obtained via trade suppliers.

1 „Heating return“ connection

2 Plug-in connector

3 Flanged pipe

4 Filter ball valve

5 „Heating flow“ connection

6 Ball valve f Using a push-fit connector, connect one of the flanged pipes supplied to the heating return connection.

f Connect the filter ball valve to the flanged pipe end.

f Reconnect a flared pipe to the end of the ball valve. www.stiebel-eltron.com

Minimum flow rate

The appliance is designed in such a way that no buffer cylinder is required to provide hydraulic separation of the flow in the heat pump circuit and the heating circuit in conjunction with area heating systems. If several heating circuits are used, we recommend using a low loss header.

Note

The minimum flow rate must be maintained at every operating point of the heat pump to ensure perfect heat pump operation (see "Commissioning / Commissioning").

To do this, the following options are available: f Install a remote control in a lead room and open this heating circuit fully.

f Install a low loss header or buffer cylinder.

The lead room is the room where the remote control is installed, preferably the living room or bathroom. The lead room can be regulated with an external programming unit, or indirectly by adjusting the heating curve. See chapter „Operation / MAIN MENU /

SETTINGS / HEATING“ in the operating instructions.



If an underfloor heating thermostat is installed, it should be set with a sufficient differential (at least 20 K) from the maximum set heating circuit temperature. The electrical connection of the underfloor heating thermostat is shown in chapter „Specification /

Connection examples“.

!

Material losses

In the "INFO" menu, the appliance offers the option to display the water pressure.

f Ensure that the pump does not run without water.

5.5 Water connection

!

Material losses



Stainless steel, zinc-plated steel, copper or plastic pipework are approved materials for the cold water line.

We approve stainless steel, copper or plastic pipework for the

DHW line.

f Remove the protective caps from the cold water inlet and

DHW outlet connections.

Safety valve

The appliance is a sealed unvented DHW cylinder. Provide the appliance with a pressure relief valve.

f 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 excess pressure. The diameter of the cold water supply line must be no greater than the diameter of the safety valve.

f 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.

f Size the drain so that water can drain off unimpeded when the safety valve is fully opened.

f Ensure that the discharge pipe of the safety valve is open to the atmosphere.

f 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

Bear in mind that, depending on the static pressure, you may also need a pressure reducing valve.

DHW circulation

DHW circulation is not recommended for reasons of poor energy efficiency. If DHW circulation is required due to unfavourable pipework or for reasons of convenience, you must install the DHW circulation in accordance with applicable standards. To reduce pump runtime and energy demand, we recommend imposing time and temperature controls on activation of the circulation pump.

A DHW circulation pipe kit and circulation pump can be found in our range of accessories.

5.6 Filling the DHW cylinder

The DHW cylinder can be filled via the cold water inlet connection.

f Open one or more hot water draw-off points to fill the DHW cylinder.

f Close the hot water draw-off points once the cylinder is full.

5.7 Option: Connecting the second DHW cylinder

f XD04-TX : Connect the temperature sensor for the second

DHW cylinder. See chapter „Electrical connection / Connecting sensors“. The temperature sensor must be type Pt1000.

5.8 Condensate drain and overpressure valve

f Check the position of the internal condensate pump in the function module. The condensate pump must fully rest on the floor.

1

2

1 Safety valve drain

2 Condensate drain

On its r.h. side, the appliance is equipped with a condensate drain.

f Connect a condensate drain pipe to the condensate drain.

!

Material losses

To ensure the condensate drains off correctly, never kink the condensate line. If necessary, create a loop.

f Route the condensate line with a sufficient fall.

Route the condensate into a floor drain. When doing so, ensure the drain is adequately ventilated, e.g. free discharge into a siphon.

Use a condensate pump if there is insufficient fall.

f If using a condensate pump, ensure that it delivers at least

6 l/min.

Pressure relief valve drain

On the r.h. side of the appliance, the safety valve drain connection also routes the pressure relief valve discharge hose out of the casing. Ensure that draining water can run off freely.



5.9 Electrical connection


Only qualified electricians may carry out the connection in accordance with these instructions. Carry out all electrical connection and installation work in accordance with national and regional regulations.


Disconnect the appliance from the power supply before carrying out work on the control panel.


The connection to the power supply must be in the form of a permanent connection. The appliance must be able to be separated from the power supply by an isolator that disconnects all poles with at least 3 mm contact separation. This requirement can be met by using contactors, circuit breakers, fuses/MCBs, etc.


Only components that operate with safety extra low voltage (SELV) and that ensure secure separation from the mains voltage supply may be connected to the low voltage terminals of the appliance.

Connecting other components can make parts of the appliance and connected components live.

f Only use components which have been approved by us.

!

Material losses

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

!

Material losses

The cable entries at the back of the appliance are closed with cable grommets. To prevent an ingress of water, cut as small a hole as possible in the cable grommet.

Note

The leakage current of this appliance can be > 3.5 mA.

5.9.1 General information

The electrical data is given in the chapter „Specification/Data table“.

Note

If cooling is to be provided by means of an area heating system, always use an external programming unit (see chapter "Appliance description / Further accessories").

An external programming unit can capture the relative humidity in the air, helping to prevent humidity condensing on surfaces inside the room.

Safety temperature controller for underfloor heating system

!

Material losses

In order to prevent excessively high flow temperatures in the underfloor heating system in the event of a fault, we always recommend using a safety temperature controller to limit the system temperature.

Safety equipment for simultaneous operation of ventilation unit and combustion equipment f XD03-13/14 : Connect the safety equipment using a floating contact.

5.9.2 Control panel

1

1 Control panel fastening screws f Undo the fixing screws of the control panel cover.

Note

A serrated washer is used on one of the fastening screws to earth the control panel cover.

When you refit the control panel cover after working at the control panel, place the serrated washer behind the fastening screw.

The control panel cover is held in place at the lower end by a tab that slots behind the appliance side panel.

f Push the control panel cover upwards and pull out at the bottom to remove it from the appliance.

Cable routing f Push all connecting cables and sensor leads through one of the „Entry electrical cables“ ducts in the back panel of the function module.



5.9.3 Heat pump (compressor) and electric emergency/ booster heater

5.9.5 POWER-OFF

XD03-EVU : Connect the signal from the power supply utility time switch (see chapter „Commissioning / Power-OFF“).

5.9.6 External pumps ( PWM )

Note

The power supply to the external pumps is not provided via the appliance.

XD01

WP Heat pump

XD02

MFG Electric emergency/booster heater of the multifunction assembly

L1 Compressor

L2 Heat pump fan

For optimum function, connect all three stages of the electric emergency/booster heater.

5.9.4 Control voltage

XD04 External terminals ( Safety extra low voltage )

UP HK2 Control connection for the pump of heating circuit 2 (control with 0-10 V or PWM signal)

UP SOL Control connection for the solar circuit pump (control with

0-10 V or PWM signal)

5.9.7 Connecting internal cables/leads

The cylinder temperature sensor and the power cable for the signal anode are routed out of the function module at the top l.h. side. All cables/leads are identified accordingly.

1

XD03

EVU Contact for Power-OFF command by the power supply utility (option)

Steuerung Control

Mi AUF Mixer open

Mi ZU

HK2

Mixer close

Heating circuit 2 pump

This connection can only be used if the "UMV" connection is not used.

Kühl

O/K

UMV

SL

FA

Cooling (option) ; Output (230 V) to activate the cooling circuits

Stove/fireplace (optional)

External diverter valve (for connecting a second DHW cylinder)

You can only use either the "UMV" connection or the "HC2" connection. The "UMV" connection is activated if the "2nd

DHW cylinder" parameter has the value "ON". The "HC2" connection is activated if the "2nd DHW cylinder" parameter has the value "OFF".

Quick-acting air vent valve (optional) : The SL terminal is a

230 V input for activating ventilation by means of a pushbutton.

Window open (optional) : The FA terminal is a 230 V output for switching an automatically controlled window with passive cooling, for example.

2

1 Anode connection at the cylinder

2 Earth block f Connect the signal anode at the top of the cylinder. Route the anode cable through the groove cut into the thermal insulation.

f Connect the earth cable to the earth block.



1

5.9.8 Connecting sensors

The sensors integrated in the appliance and the sensors supplied are type PTC or Pt1000. Observe the wiring diagram. Observe the following table.

2

1 Sensor well for the cylinder temperature sensor (economy mode/buffer mode)

2 Sensor well for the cylinder temperature sensor (Comfort)

1

2

3

1 Aperture in the thermal insulation for the sensor lead

2 Clamp (prevents the cylinder temperature sensor from slipping out)

3 Cylinder temperature sensor inside the sensor well f Insert the cylinder temperature sensor into the cylinder sensor well. Ensure that the cylinder temperature sensor is seated correctly.

XD04 External terminals ( Safety extra low voltage )

TA Outside temperature sensor

TV Mixer circuit flow temperature sensor

TR Room temperature sensor

TS Solar temperature sensor

TX Temperature sensor for second DHW cylinder

TD No function

PTC

PTC

PTC

PT 1000

PT 1000

-

Outside temperature sensor AFS 2

The outside temperature sensor should have full and unprotected exposure to the weather. Never fit it above windows, doors, light wells or air ducts, and never subject it to direct insolation. Install the outside temperature sensor on a north or north-east facing wall on the exterior side of a heated room.

Never install the outside temperature sensor near an exhaust air discharge or any other influencing factors (e.g. drier discharge).

The minimum height above the ground is 2.5 m, and minimum side clearance to windows and doors is 1 m.

f Remove the cover of the sensor enclosure.

f Secure the sensor enclosure to the wall using the screw provided.

f Route the sensor lead through the cable entry in the back panel of the function module.

f XD04-TA : Connect the sensor lead.

f Connect the sensor lead to the outside sensor.

f Place the cover on the sensor enclosure so that it clicks audibly into place.

Room temperature and solar sensor

If planned as part of the system configuration, install the sensors according to the sensor installation instructions.

f Route the sensor lead through the cable entry in the back panel of the function module.

f XD04-TR : Connect the room temperature sensor.

f XD04-TS: Connect the solar sensor.



5.9.9 CAN BUS

Connecting the external programming unit

Note

Check whether the room in which the external programming unit is installed receives a lot of warmth, for example sunlight. If it is warmed from outside, the device might regulate the flow temperature downwards. As a result, the temperature in other rooms may be lower than desired.

Internet Service Gateway

The Internet Service Gateway (ISG) enables you to operate the appliance within your local home network and via the internet when on the go.

With an external programming unit, you can switch all appliance functions and make all settings from the living space. In addition, the external programming unit captures the room temperature.

If required, this value influences the heating curve. With this, you can reduce the heating curve if the set room temperature in the lead room, i.e. the room where the programming unit is installed, is exceeded (for example through insolation or a wood stove).

Room influence weighting can be set using the „ROOM INFLUEN-

CE“ parameter.

SETTINGS

ROOM INFLUENCE HC1

XD04 CaN2 ( CaN BUS , Safety extra low voltage )

CAN-L Low

GND Ground

CAN-H High

The power supply to the ISG is not provided via the appliance.

f Also observe the ISG operating instructions.

The CAN BUS cable conductors are allocated as follows:

White High

Brown Low

Black Earth (Ground)

5.10 Filling and venting the heating system

Depending on the heating system, check whether the expansion vessels in the appliance meet the requirements (see chapter „Specification“) and whether their pre-charge pressure is sufficient.

Checking the expansion vessels

XD04 CaN2 ( CaN BUS , Safety extra low voltage )

CAN-L Low

GND

CAN-H

+12V

Ground

High

Route a standard data cable with at least four cores from the appliance to the mounting position of the remote control.

Example:

- J-Y(ST)Y 2x2x0.8 mm

- LiYCY 2x2x0.5 mm²

From approx. 50 m cable length greater cable cross-sections should be used.

Note

Observe correct separation when installing the BUS cable, the mains power cable and the sensor leads.

1

1 Fill valve of the expansion vessel f Remove the protective caps from the fill valves on the expansion vessels.

f Check the pre-charge pressure of the expansion vessel using a pressure gauge. Please note that the system must be non-pressurised.


iNSTaLLaTiON installation f Refit the protective caps on the fill valves.

Determine the fill pressure

Volume of the diaphragm expansion vessels integrated into the appliance

Expansion vessel pre-charge pressure ( P0 ) l bar

15

0.75

1

If the height difference ∆h between the highest point of the heating system and the diaphragm expansion vessel is no more than 6 m, the diaphragm expansion vessel can be used without any changes being required.

f Fill the heating system to a pressure of at least 1.1 bar

(P0 + 0.3 bar). Observe the safety valve‘s response pressure of 3 bar.

If the height difference between the highest point of the heating system and the diaphragm expansion vessel is more than 6 m, the pre-charge pressure needs to be adapted.

f Calculate the pre-charge pressure:

1 Air vent valve on the multifunction assembly f Open the air vent valve of the multifunction assembly by turning anti-clockwise.

P0 =

∆h

10

+ 0,2 bar f Note that the heating system fill pressure increases accordingly.

f Check whether a further external diaphragm expansion vessel needs to be installed.

f Fill the heating system to the appropriate pressure

(P0 + 0.3 bar). Observe the safety valve‘s response pressure of 3 bar.

Filling the heating system

!

Material losses

High flow rates or water hammer can damage the appliance.

f Fill the appliance at a low flow rate.

1

1 Air vent valve on the circulation pump f Open the air vent valve on the circulation pump by pulling its head upwards.

f After venting, check whether the air vent valve of the multifunction assembly or circulation pump drips.

1

1

1 Drain connection for filling and draining the heating circuit f Pull the closure cap downwards from the „Drain“ connection.

f Connect the fill hose with a quick-action hose coupling.

f Open the „Drain“ connection by turning the star handle through approx. 180°.

1 Air vent valve of the DHW heating line f Open the air vent valve of the DHW heating line.

f For filling, turn the lever on the drain connection 90° anti-clockwise.

f Switch on the appliance and set the displayed system pressure at the programming unit („PRESSURE HTG CIRC“ parameter).

f Fill the system.

f After filling close the drain connection.

f Fit the cap on the drain connection.

You can check the water pressure in the heating circuit on the programming unit with the „PRESSURE HTG CIRC“ value.

f Determine the „PRESSURE HTG CIRC“ value for one of the three favourites. For this, navigate from the default display to the „FAVOURITES“ parameter.



Note

Proceed carefully when filling as the "PRESSURE HTG

CIRC" value is only updated every 10 seconds. If you have determined the value not in association with one of your favourites but instead by calling up the "INFO" parameter, the value will only be updated every 60 sections.

Note

Air locks in the system are detrimental to the appliance operation.

f Vent the pipework carefully.

5.11.3 Mounting the programming unit

Venting the plate heat exchanger

1 f Position the programming unit from the front in the opening of the fascia.

f Then fit the frame at the back of the fascia together with the programming unit, until the programming unit clicks into place in the frame.

5.11.4 Fitting the fascia f Hook the rear fascia frame into the hooks provided on the appliance front.

1

1 Air vent valve of the plate heat exchanger

5.11 Fitting the appliance casing

5.11.1 Installing front panel and cover of the cylinder module

1 3

2

1 Screw for securing the front panel f Hook the front panel of the cylinder module into the hooks on the cylinder module frame.

f Turn the screw to secure the front panel into the hole provided.

f Place the cover onto the cylinder module so that the labels with the terminal designations are located behind the terminals.

f Secure the cylinder module cover with screws.

5.11.2 Installing front panel of the function module f Attach the lower front panel of the function module using screws.

f Close the function module door and lock it.


1 Slot for securing the fascia frame

2 BUS cable

3 Screw for securing the fascia on the fascia frame f Secure the fascia frame with one screw in the slot on the appliance.

f Connect the bus cable to the programming unit. The BUS cable must run upwards with the jumper in the l.h. side.

f Insert the fascia from the top into the fascia frame.

The fascia has one screw each on the l.h. and r.h. side.


iNSTaLLaTiON installation f Tighten these screws to secure the fascia to the fascia frame.

5.12 Outdoor air and exhaust air hose installation

Note

If connecting a geothermal heat exchanger, convert the appliance as described in chapter "Outdoor air mechanical ventilation connection option" before fitting the air hoses.

f Invert the internal hose halfway down the connector.

Air hoses guide the intake air (outdoor air) from the outside to the heat pump, and route the discharge air (exhaust air) to the outdoors (see chapter „Required accessories“). These are highly flexible, thermally insulated and self-extinguishing in case of fire in accordance with ASTMD 1692-67 T.

5.12.1 Information on routing the air hoses f Use a sharp knife to trim the hose to the required length. Cut the Bowden core using wire cutters.

If you need to extend the air hose, push the core of two hoses together. There should be approx. 30 cm overlap.

The total length of hoses on the air intake and discharge sides must not exceed 8 m.

Never incorporate more than four 90° bends. The radius of the bends must be at least 365 mm, relative to the centre of the hose.

Note

When installing an outdoor air connection maintain

Δp < 20 Pa. In other words, the outdoor air duct run should be as short as possible.

f Seal the transition from the internal hose to the connector with the self-adhesive thermal insulation tape supplied.

1

The air hose tends to sag because of its flexibility. Secure it at intervals of approx. 1 m.

5.12.2 Fitting the air hoses f Adapt the shape of the air hose to match the oval connection panel of the function module.

1 Film f Pull the sleeves of the sound-optimised hoses (LSWP 315-4 S) over the connections.

1

2 f For the sound optimised hoses (LSWP 315-4 S), use the self adhesive thermal insulation provided to seal the transition from the hose sleeve to the connection.

1 External hose

2 Internal hose f Push the external hose and the thermal insulation slightly up so that the internal hose of the air hose protrudes slightly.


iNSTaLLaTiON

Commissioning f Pull the external hose and the thermal insulation below it over the connector.

f Tuck the thermal insulation into the outer hose in such a way that the thermal insulation is no longer visible.

f Seal the transition from the external hose to the connector with the self-adhesive thermal insulation tape supplied.

f Secure the external hose with the hose clip to the connector.

!

Material losses

Always cover the air intake and discharge with wire grilles, and secure the hoses against slippage.

Hose connection panels or wall outlets with hose connection and grilles are available for hose connections to exterior wall knockouts or cellar windows.

5.13 Installing extract air and supply air pipes

Install with the material you can obtain from us or with commercially available folded spiral-seam tubes.

!

Material losses

During installation, ensure that no metal swarf enters the pipework. However, should this occur, remove this debris, otherwise the fans may be damaged.

Where the extract air and supply air pipes are routed through unheated rooms, they must be thermally insulated. If, when connecting a geothermal heat exchanger, the outdoor air pipe is routed through heated rooms, this pipe must also be thermally insulated with vapour diffusion-proof material.

5.13.1 Silencer

Fit silencers as near as possible to the appliance into the extract air and the supply air flows. Fit a silencer just upstream of bedrooms.

If a room with a high noise level needs to be ventilated, install additional silencers in the supply air pipe or extract air pipe of this room to reduce sound transmission to adjacent rooms.

5.13.2 Cleaning apertures f Provide cleaning apertures when installing the air ducts, so the air ducts can be checked at regular intervals and cleaned if necessary.

5.13.3 Supply and extract air vents

Supply and extract air vents for the living space are available for wall or ceiling mounting.

When venting the kitchen, ensure that the extract air vent is fitted as far as possible from the cooker.

!

Material losses

Never link cooker hoods to the ventilation system.

5.13.4 Overflow apertures

Provide suitable overflow apertures since the air is only blown into living rooms and bedrooms, and is only extracted from unpleasant-smelling and humid rooms. For example, fit ventilation grilles in internal doors or walls, or increase the air gap below the door (≥ 8 mm) to ensure an unimpeded overflow and thereby air balancing.

6. Commissioning

!

WARNING Injury

Only qualified contractors may commission this appliance and instruct the user.

!

Material losses

Never operate the ventilation system if there are high levels of dust inside the building or outside in the immediate vicinity, as this could block the filter. Dust is created by cutting tiles or working with plasterboard, for example.

f Commission the system in accordance with this manual. Our customer service can provide commissioning support, which is chargeable.

If adjustments need to be made to the appliance control unit during commissioning, please refer to the applicable documents.

Operation : Chapter „Operation“

Commissioning / Notification list : Chapter „Settings“


iNSTaLLaTiON

Commissioning

6.1 Checks before commissioning

6.1.1 Heating system

- Are all connections on the central heating and DHW side connected and tightened?

- Was the heating system filled to the correct pressure and vented, and was the quick-acting air vent valve opened?

- Has the condensate hose been routed correctly?

- Was a vessel placed beneath the safety valve discharge hose?

6.1.2 Ventilation system

- Have the air ducts been installed correctly and sealed if required?

- Have all air connections been designed correctly?

6.1.3 Heat pump

- Have the insulated air hoses been installed in accordance with regulations? In particular, the outdoor air and exhaust air connections must be sealed carefully on both sides.

- Are the exterior wall outlets free from leaves and other contamination?

Note

Never fit any additional fly screens in the wall outlets.

6.1.6 Power supply

- Has the power supply been designed correctly and the earth conductor for the cylinder connected?

- Have all internal cables been connected correctly?

6.1.7 High limit safety cut-out

With ambient temperatures of below -10 °C, it is possible that the high limit safety cut-out of the electric emergency/booster heater may trip.

f Check whether the high limit safety cut-out has tripped.

6.1.4 Cylinder

- Has the cylinder been filled (hot tap open until water flows out)?

- Has a pressure reducing valve been installed if the water pressure is above 80 % of the permissible pressure?

1

1 Plastic union nut

!

Material losses

The torque of the plastic union nut depends on the gasket used.

15 Nm = prefitted soft rubber gasket.

25 Nm = alternative hard gasket.

Keep to the permissible torque.

- Is the plastic union nut tight against leaks? If it is leaking, tighten the plastic union nut.

6.1.5 Temperature sensor

- Have outside sensors, cylinder temperature sensor and, if required, mixer circuit sensor and flow sensor for the second heating circuit been correctly positioned and connected?

1

1 Reset button for high limit safety cut-out f Reset the high limit safety cut-out by pressing the reset button.

6.1.8 Condensate pump f Check the condensate pump before commissioning the appliance.

f Check whether the drain hose of the defrost tray is routed correctly.

6.2 Filter insertion

!

Material losses

Never operate the appliance without filters.

f Insert the supply air filter, included in the standard delivery, into the appliance.

1.

2.

ON www.stiebel-eltron.com LWZ 5/8 CS Premium | 27

iNSTaLLaTiON appliance shutdown

6.3 Commissioning via the programming unit

338916 Commissioning / Notification list

Sound-reduced night mode („ Silent Mode “)

It may be necessary to set reduced night mode in areas with more stringent noise emission requirements.

The operator of the heat pump system must be informed of the setting. The installation company is responsible for setting sound-reduced night mode when the system is commissioned.

6.4 Recommissioning

f Carry out the work specified in chapter „Maintenance“.

f If there has been frost since the appliance was shut down, check all hydraulic lines for possible frost damage.

f Fill the DHW cylinder.

f Fill the heating circuit.

f Switch on the power supply.

7. Appliance shutdown

!

WARNING Injury

There will be no ventilation if the appliance is taken out of use. This may result to the development of mould fungus and damage to the building.

f Prevent the appliance being out of use for prolonged periods.

Note

Prevent the appliance being shut down if it is to be restarted later. Use the standby mode.

When shutting down, always carry out the following steps: f Isolate the appliance fully from the power supply.

WARNING Burns

Hot water may escape when draining the DHW cylinder.

f Close the shut-off valve in the cold water supply line.

f Open the hot water taps on all draw-off points.

In the case where the appliance is to be returned into use again later, first carry out the following: f Remove the air filters.

f Carry out all service-related cleaning tasks, such as cleaning the condensate pan and the cross-countercurrent heat exchanger.

!

Material losses f the appliance has been fully shut down and that it must be refilled, checked and commissioned before restarting.

f Mark the appliance with the date when it was shut down.

1

1 Drain connection of the DHW cylinder f Fully drain the DHW cylinder.

f Drain the heating circuit.


1 iNSTaLLaTiON

Troubleshooting

8. Troubleshooting

8.1 Exhaust air fan is catching

If the exhaust air fan drags, return it into its correct position.

8.3 Circulation pump

If the LED on the heating circuit pump flashes red even though there is an active heat demand, disconnect the power supply for

30 seconds. If the circulation pump does not run after switching the power supply back on, replace the circulation pump.

8.4 Fault messages in the programming unit

Note

The message list can be found in a separate supplement.

If there is a fault in the system, a fault message appears on the display. There is a fault memory so you can check earlier faults.

This is found under „MENU / CONTRACTOR / FAULT SEARCH“.

The fault list contains the ten most recent fault messages.

Some fault messages prompt you to press the reset button.

2

1

1 Electronics reset button

1 Fixing screw on the r.h. side panel

2 Fan strut fixing screws f Open the function module door.

You will locate the fixing screw for the r.h. side panel in the gap between door and appliance.

f Undo the fixing screw from the r.h. side panel.

f Remove the r.h. side panel of the function module.

f Undo the fixing screws from the fan strut and push the strut so the exhaust air fan no longer drags. If necessary, increase the clearance between the fan nozzle and the fan using spacers.

f Refit the fixing screws to the fan strut.

f Insert the fixing screw into the r.h. side panel.

8.2 Cleaning defrost pan

!

Material losses

Do not use any cleaning agents, just water.

Clean the defrost tray if it is dirty. It may be contaminated with leaves, mineral wool residues (from insulation) or polystyrene balls (from drainage tiles).

f Remove the central front panel as described in chapter „Cleaning the evaporator fins“.

1

1 Reset button for high limit safety cut-out www.stiebel-eltron.com LWZ 5/8 CS Premium | 29

iNSTaLLaTiON maintenance and cleaning

9. Maintenance and cleaning

WARNING Electrocution f isolate the appliance across all poles from the power supply.

9.2 Cleaning the outdoor air filter

The outdoor air filter is fitted downstream of the cross-countercurrent heat exchanger.

9.1 Cleaning the air/air heat exchanger

Check and clean the cross-countercurrent heat exchanger at least once a year.

2.

1.

3.

2.

1.

1 Upper front panel

2 Cross-countercurrent heat exchanger f Open the door of the function module (r.h. half of the appliance). f Remove the fascia fitted to the centre of the appliance.

f Undo the screws on the right-hand side of the top front panel.

f Pivot the top front panel open to the left.

f If the contamination level is modest, clean the cross-countercurrent heat exchanger with the brush attachment of a vacuum cleaner.

f If more severe contamination is visible and extends into the cross-countercurrent heat exchanger, clean it as described in the following.

f Pull out the cross-countercurrent heat exchanger.

f Clean the cross-countercurrent heat exchanger with warm water. Do not use solvents.

f Afterwards flush the cross-countercurrent heat exchanger with warm water.

f Let the cross-countercurrent heat exchanger dry out.

1 Upper front panel

2 Cross-countercurrent heat exchanger

3 Outdoor air filter cassette f Pull out the cross-countercurrent heat exchanger.

f Grasp the outdoor air filter cassette by the grip holes and remove it.

f Remove the filter from the filter cassette.

f Clean the filter.

f If the filter is damaged, replace it.

f Place the filter in the filter cassette.

f Refit the outdoor air filter cassette in the appliance.

f Refit the cross-countercurrent heat exchanger in the appliance.

f Pivot the top front panel closed.

f Secure the top front panel with screws.

f Fit the fascia.

9.3 Cleaning the evaporator fins

Check the evaporator fins for dirt from time to time.

1


1 Defrost hose (hose of the pressure differential switch for capturing the end of defrosting) f Undo the screws and remove the central front panel.

f Remove the defrost hoses from the guide grooves in the EPS cover.

f Pull the now accessible EPS cover 6 to 8 cm to the right.


iNSTaLLaTiON maintenance and cleaning f Tilt the top of the EPS cover towards you from the appliance.

f Pull the EPS cover upwards to remove.

f Remove the dirt grille fitted above the condensate pan by compressing it from its sides and removing it upwards.

f Check the defrost pan drain and clean it, if required.

!

Material losses

Do not use a high pressure cleaner otherwise the evaporator fins may be bent.

f Spray water across the evaporator fins.

f Remove the water from the appliance using a wet suction device.

f Remove contaminants and blockages.

Note

Check the condensate drain regularly, at least once a year.

9.4 Cleaning the condensate drain

Check the condensate drain regularly.

f Remove the evaporator cover (see chapter „Cleaning the evaporator fins“).

f Remove dirt and blockages immediately.

f To test the drain, pour one litre of water, for example from two half-litre bottles, into the condensate pan.

If the condensate pan does not overflow, the drainage facility is adequate.

9.5 Cleaning the filter ball valve

Below the evaporator is a two-part evaporator gasket. The two parts of the gasket are connected with a bracket.

f Pull the bracket upwards to remove.

f First remove the l.h. half of the evaporator cover.

f Close the filter ball valve by turning it 90° clockwise.

f Undo the cap.

f If the filter element is contaminated, connect a short hose for backwashing.

f Place the free end of the hose in a bucket.

f Turn the filter ball valve 15° clockwise.

f Turn the filter ball valve 15° back again.

f Check whether cleaning was successful. Repeat backwashing if required.

f Refit the cap.

f Open the filter ball valve by turning it 90° anti-clockwise.

f Check the system fill pressure and adjust if required.

f Then remove the r.h. half of the evaporator cover.

!

Material losses

Do not use any cleaning agents, just water.


iNSTaLLaTiON maintenance and cleaning

9.6 Replacing the anode

f Isolate the appliance from the power supply.

f Close the shut-off valve in the cold water supply.

f Remove the cover from the cylinder module.

f Remove the l.h. front panel of the cylinder module.

f Briefly open the lowest DHW draw-off point.

9.7 Checking the diaphragm expansion vessels

1

1

1 Drain connection of the DHW cylinder f At the DHW cylinder drain valve, draw off approx. 20 litres of water.

1 Fill valve of the expansion vessel f Remove the protective caps from the fill valves on the expansion vessels.

1

1

2

1 Anode connection at the cylinder

2 Anode f Pull the anode cable plug from the anode. f Remove the anode by turning it.

f Insert a new anode. Alternatively, you can also use a segmented anode.

f Push the plug of the anode cable back onto the anode.

f Open the shut-off valve in the cold water line.

f Vent the DHW pipework at the respective DHW draw-off points.

1 Cap valve f Close the cap valve and depressurise the expansion vessel by draining the cap valve.

f Check the pre-charge pressure of the expansion vessel using a pressure gauge.

f Reopen the cap valve.

f Refit the protective caps on the fill valves.

f Reassemble the appliance in reverse order, i.e. fit the l.h. front panel and cover.

f After the appliance has been fully closed again, restore the power supply.


iNSTaLLaTiON

Specification

10. Specification

10.1 Dimensions and connections

812

750 1430 g07 g09 b01

334

850 d45 d26 d25

30

70 c12 c09

130

505

380 e02 e01

255 c06 c01 g03

510

130 g04 b01 Entry electrical cables c01 Cold water inlet c06 DHW outlet c09 Entry DHW circulation c12 Safety valve drain d25 Solar flow d26 Solar return d45 Condensate drain e01 Heating flow e02 Heating return g03 Outdoor air g04 Exhaust air g05 Extract air g06 Supply air g07 Outdoor air geothermal heat exchanger g09 Outdoor air mechanical ventilation opt.

g06 g05

675

343

Diameter

Diameter

Diameter

Diameter

Diameter

Diameter

Diameter

Diameter

Nominal diameter

Nominal diameter

Nominal diameter

Nominal diameter

Nominal diameter

Nominal diameter mm mm mm mm mm mm mm mm

LWZ 5 CS Premium

22

22

19

22

22

22

22

22

DN 315

DN 315

DN 160

DN 160

DN 160

DN 160

LWZ 8 CS Premium

22

22

19

22

22

22

22

22

DN 315

DN 315

DN 160

DN 160

DN 160

DN 160 www.stiebel-eltron.com LWZ 5/8 CS Premium | 33

iNSTaLLaTiON

Specification

10.2 Connection examples

Example 1 : Without power-OFF periods

MFG

XD02

1 2 3 4 5

WP

XD01

6 7 8 9

Steuerung

XD03

1 2 3 4 XE03

2

1

M

1

3/N/PE ~ 50Hz 400V 2/N/PE ~ 50Hz 1/N/PE ~ 50Hz 230V

WP

MFG

Heat pump / Fan

Electric emergency/booster heater

Steuerung Control

1 Underfloor heating thermostat (option) or safety equipment terminal for stove / fireplace

Example 2: Blocking time for electric emergency/booster heater

MFG

XD02

WP

XD01

1 2 3 4 5

1L 2L 3L N EP 1

L 2L

Steuerung

XD03

1 2 3 4 XE03

1

L1 L2 L3 N PE

3/N/PE ~ 50Hz 400V

L1 L2 N PE

2/N/PE ~ 50Hz

L1 N PE

1/N/PE ~ 50Hz 230V

WP

MFG

Heat pump / Fan

Electric emergency/booster heater

Steuerung Control

1 Underfloor heating thermostat (option) or safety equipment terminal for stove / fireplace

2 Time switch for power-OFF periods

10.3 Application range

Heating

70

60

50

40

30

20

10

0

-30 -20 -10 0 10

1

20 30 40

Cooling

30

25

20

15

10

5

0

15 20 25 30

1 Application range limits

X Outside temperature [°C]

Y Flow temperature [°C]

35 40

10.4 Sensor resistance values

70

80

90

100

30

40

50

60

110

120

0

10

20

25

Temperature in °C

-30

-20

-10

Pt1000 sensor resistance in Ω

882

922

961

1000

1039

1078

1097

1117

1155

1194

1232

1271

1309

1347

1385

1423

1461

45

1

PTC sensor resistance in Ω

---

1367

1495

1630

1772

1922

2000

2080

2245

2417

2597

2785

2980

3182

3392

---

---

Note

When measuring with a multimeter, the resistance values serve only to identify faulty or incorrect sensors.

Measuring with a multimeter is too imprecise to test for accuracy.


iNSTaLLaTiON

Specification

10.5 Wiring diagram

Wiring diagram key

BT30

BT35

BT40

BT42

BT43

BT44

BT45

BT46

BT02

BT11

BT12

BT20

BT21

BT22

BT27

BT29

BT48

BT51

BT55

BT56

AA02 Integral control unit

AA04 Inverter

AA06 Programming unit

BF01

BL01

Heating circuit flow rate sensor

Condensate float switch

BM03 Extract air humidity sensor

BP01

BP03

BP05

BP10

BP11

BP12

BP16

BT01

High pressure sensor

Low pressure sensor

High pressure (HP) pressure switch

Heating circuit (water) pressure sensor

Air differential pressure sensor

Air differential pressure sensor 2

Signal anode pressure switch

Heating flow temperature sensor - PT 1000

Heating return temperature sensor - PT 1000

Temperature sensor, flow - HP - Pt1000

Temperature sensor, return - HP - Pt1000

DHW cylinder temperature sensor

DHW cylinder top temperature sensor (optional)

DHW cylinder integral temperature sensor (optional)

2nd DHW cylinder DHW sensor - PT1000 (optional)

Solar collector temperature sensor - PT1000

BT57

Outside temperature sensor

Extract air temperature sensor

Temperature sensor, hot gas - PT 1000

Temperature sensor, condenser (frost protection)

Temperature sensor, evaporator discharge

Temperature sensor, defrost end (evaporator inlet)

Evaporator discharge temperature sensor - PT 1000

Compressor intake temperature sensor - PT 1000

Oil sump temperature sensor - PT1000

Compressor temperature limiter

High limit safety cut-out for MFG

Temperature controller, booster heater 2 kW

(optional)

High limit safety cut-out for 2 kW booster heater

(optional)

Booster heater MFG EB01

EB02

EB03

FC01

Booster heater cylinder BGC 2 kW (optional)

Oil sump heater

Inverter fuse

Condensate pump fine-wire fuse FC07

KF01

KF27

Compressor contactor

Passive cooling relay

MA01 Compressor motor

MA04 Motor, electronic expansion valve, evaporator

MA06 Motor, electronic expansion valve, heat pipe

MA07 Diverter valve, defrost

MA10 Circulation pump motor

MA13 Motor, condensate pump, bottom plate

MA15* Diverter valve motor (heating/DHW/alternative)

MA16 Diverter valve motor (cooling)

MA20 Motor, heat pump fan

MA21 Motor, supply air fan

MA22 Motor, extract air fan

RF01 Interference suppression filter

RF06

SF01

XD01

XD02

XD03

XD04

Ferrite core ring

Reset button

Compressor/HP fan power supply

Instantaneous water heater (MFG) power supply

230 V PCB inputs power supply

Terminals for external temperature sensor and CAN bus

Booster heater power supply (optional/cylinder) XD11

XD20 Terminal

XD21

XD22

L block terminal

N block terminal

3-pin terminal

4-pin terminal

XD23

XD24

XD27

XD76

XD77

XD78

XD79

XD80

CAN bus programming unit connector

Diverter valve connector (alternative)

Integral sensor connector

Supply air fan connector

Extract air fan connector

Heat pump fan connector

Clamping plate earth connection for external

Temperature sensor earth terminal

XE03

XE08

XE09

XE12

XE15

XE16

Temperature sensor earth terminal

Control panel earth connection

Clamping plate earth connection

Lower control panel earth connection

XE17 Cylinder earth connection

AA02-X1 Connector X1, temperature sensor, 8-pin

AA02-X2 Connector X2, temperature sensor, 12-pin

AA02-X3 Connector X3, circulation pump / ext. pumps

AA02-X4 Connector X4, LV input: Pressure and humidity sensor, float switch

AA02-X5 Connector X5, pressure transducer HP/LP

AA02-X51 Connector X51, flow sensor

AA02-X6 Modbus connection

AA02-X7 Connector X7, CAN bus

AA02-X8 Connector X8, CAN BUS, programming unit

AA02-X9 Connector X9, stepper motor

AA02-X10 Connector X10 EXV, evaporator

AA02-X11 Connector X11 EXV, heat pipe

AA02-X12 Connector X12, supply air fan

AA02-X13 Connector X13, extract air fan

AA02-X14 Connector X14, heat pump fan

AA02-X15 Connector X15, input

AA02-X16 Connector X16, mains power

AA02-X17 Connector X17, output 1

AA02-X18 Connector X18, output 2

AA02-X19 Connector X19, compressor

AA02-X20 Connector X20, DHC input/output

AA02-X22 Connector X22, air differential pressure sensor

AA02-X23 Connector X23, air differential pressure sensor 2

AA02-X24 Connector X24, temperature sensor

AA02-X25 USB port / Service plug www.stiebel-eltron.com LWZ 5/8 CS Premium | 35

iNSTaLLaTiON

Specification

XD22

N

1 2 3 4

L

N

L

N

Mi ZU

Mi AUF

N

L

L‘

L

N

L‘

L

L‘

L

N

N

EVU

L

3

2

1

XE03

1 2 3 4 5

PE

N

L2

L1

PE

N

L3

L2

L1

HZK 400V

XD11 L1 L2 PE

BT56

1

2

XE15

3 A1

KF27 zu MA20

A2

BT57

T >

12 22

11 21

EB02 optional

2 4 6 A1

KF01

1 3 5 A2

FC01

BT35

T optional

BT22

T

BT21

T

BT48

T

BT12

T

BT43

T

BT46

T

BT45

T

BT42

T

BT11

T

1 2 3 4

XD21

L von

AA02-X24

5,6

XD77

3

XE08

1 2 3 4

XE09

1 2 3 4

XE17

(Speicher)

1 2 3 4 5

XE12

MA22 MA21

BP12 p

BP11 p

EB03

XE16

1 2 3 4

XD24

N L

BT02

T

BT20

T

BT44

T

BT40

T

BT01

T

BT30

TA TV TR

BT29

TS

XD04

UP HK2 TX

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

XE08

1 2 3 4 5

XE09

1 2 3 4 5 zu

BT35

1,2 zu

XD04

21,22 zu

MA10

1

3

1

3

9

X23

X24

X22

1 8

6

1

3

1

X20

NE Stufe Niedrig IN

NE Stufe Niedrig OUT

NE Stufe Mittel IN

NE Stufe Mittel OUT

NE Stufe HOCH IN

NE Stufe HOCH OUT

X19

-

Verdichter L‘

Verdichter L

1

5

X18

Fenster AUF

Aereco

Ölsumpf

UMV Kühlen

HK2/ 2. WW-Speicher

1

6

X17

Synchronmotor Heizen

Synchronmotor WW

Abtauventil

Kühlen

Mischer ZU

Mischer AUF

SF01

X1

1 12

AA02

X25

L N

X16

1 2

X2

Schrittmotor

EXV

Heat-Pipe

Zuluft-

Lüfter

Abluft-

Lüfter

1

EXV

Verdampfer

WP-Lüfter

10

Schalter Bodenblech

-

-

+5V

GND

Feuchtesensor

+5V

GND

P Heizung

+5V

X4

1 X3

10

1

6

-

-

HD-Sensor

+Ub

ND-Sensor

+Ub

X5

1

3

GND

IN

+5V

X51

1

5

FE

GND

RS485A

RS485B

+Ub

X6

1

4

+12V

CAN-H

CAN-L

GND

X7

1

4

+12V

CAN-H

CAN-L

GND

X8

1

5

Phase 4

Phase 3

Phase 2

Phase 1

+12V

X9

1

5

Phase 4

Phase 3

Phase 2

Phase 1

+12V

X10

1

5

Phase 4

Phase 3

Phase 2

Phase 1

+12V

X11

1

4

GND

Drehzahl

+10V

PWM

X12

1

4

GND

Drehzahl

+10V

PWM

X13

1

4

GND

Drehzahl

+10V

PWM

X14

1

8

Schnelllüftung

STB

O/K Betrieb

EVU

Signalanode

-

Klixon

HD-Wächter

X15

1 von X7

1,2,3,4 von

AA02-X24

3,4

BL01

%

5

U

4 3 bk bu bn wh bn gn ye gy ye wh bk rd bk ye rd og gy rd wh ye bk bk ye rd og gy gn wh bn ye gn wh bn ye gn wh bn ye

4 bn wh

BF01 gn bn wh bn wh zu AA04

3,4,5 zu XD04

9,10,11,12 ye rd bk wh

XD27

BP10

BP01

BP03

5

RF06

4

4

4

M MA04 bn gy wh gn ye

3

4

1

2

5

XD76

M

1~

MA15* alternativ

M bn gn ye wh

1

2

3

4

MA06 rd bu ye wh

M

N

1~

L bn gn ye wh

1

2

3

4 rd bu ye wh

M

N

1~

L bn gn ye wh

1

2

3

4 rd bu ye wh

M

1~

N

L

MA22

MA21

MA20

XD80 XD79 XD78

RF01

L N PE

L*N*PE* von

XD01

8,9,10 von XD24 und XE12 von XD24 und XE12 von

AA02-X6

2,3,4

10

L N PE

AA04

1

U V W PE

U V W

M

3~

BT55

T >

11 21 31

XD23

1 2 3

PE N L

12 22 32

XD20 1 2 3 4 5 6 7 8

- N N N PE L L -

9

-

10

-

11 12 13 14

- L‘ L‘ -

FC07 von

AA02-X3

3,4

1~

MA10

1~

MA13

4 3 2 1

MA15* alternativ

BP05

1~

MA16

BP16 BT51

MA07

EB01

MA01


MA04

MA06

MA07

MA10

MA13

MA15*

MA16

MA20

EB01

EB02

EB03

FC01

FC07

KF01

KF27

MA01

BT45

BT46

BT48

BT51

BT55

BT56

BT57

BT27

BT29

BT30

BT35

BT40

BT42

BT43

BT44

AA02 Integrierte Regelung

AA04 Inverter

AA06 Bedieneinheit

BF01 Volumenstromsensor Heizkreis

BL01 Schwimmerschalter Kondensat

BT01

BT02

BT11

BT12

BT20

BT21

BT22

BM03

BP01

BP03

BP05

BP10

BP11

BP12

BP16

Feuchtesensor Abluft

Drucksensor Hochdruck

Drucksensor Niederdruck

Druckwächter Hochdruck (HD)

Drucksensor Heizkreis (Wasser)

Differenzdrucksensor Luft

Differenzdrucksensor Luft 2

Druckschalter Signalanode

Temperaturfühler Heizungsvorlauf - PT 1000

Temperaturfühler Heizungsrücklauf - PT 1000

Temperaturfühler Vorlauf - WP - PT 1000

Temperaturfühler Rücklauf - WP - PT 1000

Temperaturfühler WW Speicher

Temperaturfühler WW Speicher Dom (optional)

Temperaturfühler WW Speicher Integral (optional)

Warmwasserfühler 2. WW-Speicher - PT1000 (optional)

Temperaturfühler Solarkollektor - PT1000

Temperaturfühler Außentemperatur

Temperaturfühler Ablufttemperatur

Temperaturfühler Heißgas - PT 1000

Temperaturfühler Verflüssiger (Frostschutz)

Temperaturfühler Verflüssigeraustritt

Temperaturfühler Abtauende (Verdampfereintritt)

Temperaturfühler Verdampferaustritt - PT 1000

Temperaturfühler Verdichtereintritt - PT 1000

Temperaturfühler Ölsumpf - PT 1000

Temperaturwächter Verdichter

Sicherheitstemperaturbegrenzer für MFG

Temperaturregler Zusatzheizung 2 kW (optional)

Sicherheitstemperaturbegrenzer für

Zusatzheizung 2 kW (optional)

Zusatzheizung MFG

Zusatzheizung Speicher BGC 2kW (optional)

Heizung Ölsumpf

Sicherung Inverter

Feinsicherung Kondensatpumpe

Schütz Verdichter

Relais Passivkühlung

Motor Verdichter

Motor elektronisches Expansionsventil Verdampfer

Motor elektronisches Expansionsventil Heat-Pipe

Umschaltventil Abtauen

Motor Umwälzpumpe

Motor Kondensatpumpe Bodenblech

Motor Umschaltventil (Heizen/WWB/alternativ)

Motor Umschaltventil (Kühlen)

Motor Wärmepumpenlüfter

XD27

XD76

XD77

XD78

XD79

XD80

XE03

XE08

XE09

XE12

XE15

XE16

XE17

AA02-X1

AA02-X2

AA02-X3

XD04

XD11

XD20

XD21

XD22

XD23

XD24

MA21

MA22

Motor Zuluftlüfter

Motor Abluftlüfter

RF01 Entstörfilter

RF06 Ferritringkern

SF01

XD01

XD02

XD03

Entstörtaster

Netzanschluss Verdichter/WP-Lüfter

Netzanschluss Durchflusserwärmer (MFG)

Netzanschluss Platine Eingänge 230V

Anschl. externe Temperaturfühler und CAN-Bus

Netzanschluss Zusatzheizung (optional / Speicher)

Anschlussklemme

Klemme L-Block

Klemme N-Block

Klemme 3-polig

Klemme 4-polig

Buchsenstecker CAN-Bus Bedienteil

Buchsenstecker Umschaltventil (alternativ)

Buchsenstecker Integralfühler

Buchsenstecker Zulüfter

Buchsenstecker Abluftlüfter

Buchsenstecker Wärmepumpenlüfter

Erdungsanschluss Klemmblech für extern

Erdungsklemme Temperaturfühler


Erdungsanschluss Schaltkasten

Erdungsanschluss Klemmblech

Erdungsanschluss Schaltkasten unten

Erdungsanschluss Speicher

Buchsenstecker X1 Temp.-Fühler 8-pol.


Buchsenstecker X3 Umwälzpumpe/ ext. Pumpen

AA02-X4

AA02-X5

AA02-X51

Buchsenstecker X4 Eingang Kleinspannung:

Druck- und Feuchtesensor, Schwimmerschalter

Buchsenstecker X5 Druckgeber HD/ND

Buchsenstecker X51 Volumenstromsensor

AA02-X6 Modbusanschluss

AA02-X7 Buchsenstecker X7 CAN-Bus

AA02-X8

AA02-X9

Buchsenstecker X8 CAN-Bus Bedieneinheit

Buchsenstecker X9 Schrittmotor

AA02-X10

AA02-X11

AA02-X12

AA02-X13

AA02-X14

AA02-X15

AA02-X16

AA02-X17

Buchsenstecker X10 EXV Verdampfer

Buchsenstecker X11 EXV Heat-Pipe

Buchsenstecker X12 Zuluftlüfter

Buchsenstecker X13 Abluftlüfter

Buchsenstecker X14 Wärmepumpenlüfter

Buchsenstecker X15 Eingang

Buchsenstecker X16 Netzspannung

Buchsenstecker X17 Ausgang 1

AA02-X18

AA02-X19

AA02-X20

AA02-X22

AA02-X23

AA02-X24

AA02-X25


Buchsenstecker X19 Verdichter

Buchsenstecker X20 DHC Eingang/Ausgang

Buchsenstecker X22 Differenzdrucksensor Luft

Buchsenstecker X23 Differenzdrucksensor Luft 2

Buchsenstecker X24 Temperaturfühler

USB-Anschluss/ Servicestecker

iNSTaLLaTiON

Specification

XD22

N

1 2 3 4

L

N

L

N

Mi ZU

Mi AUF

N

L

L‘

L

N

L‘

L

L‘

L

N

N

EVU

L

3

2

1

XE03

1 2 3 4 5

PE

N

L2

L1

PE

N

L3

L2

L1

HZK 400V

XD11 L1 L2 PE

BT56

1

2

XE15

3 A1

KF27 zu MA20

A2

BT57

T >

12 22

11 21

EB02 optional

2 4 6 A1

KF01

1 3 5 A2

FC01 von

AA02-X6

2,3,4

BT35

T optional

BT22

T

BT21

T

BT48

T

BT12

T

BT43

T

BT46

T

BT45

T

BT42

T

BT11

T

1 2 3 4

XD21

L von

AA02-X24

5,6

XD77

3

XE08

1 2 3 4

XE09

1 2 3 4

XE17

(Speicher)

1 2 3 4 5

XE12

MA22 MA21

BP12 p

BP11 p

EB03

1 2 3 4

XD24

N L

XE16

RF01

L N PE

L*N*PE*

10

L N PE

AA04

1

U V W PE

U V W

M

3~

BT55

T >

11 21 31

XD23

1 2 3

PE N L

12 22 32

XD20 1 2 3 4 5 6 7 8

- N N N PE L L -

9

-

10

-

11 12 13 14

- L‘ L‘ -

FC07 von

AA02-X3

3,4

1~

MA10

1~

MA13

BT02

T

BT20

T

BT44

T

BT40

T

BT01

T

BT30

TA TV TR

BT29

TS

XD04

UP HK2 TX

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

XE08

1 2 3 4 5

XE09

1 2 3 4 5 zu

BT35

1,2 zu

XD04

21,22 zu

MA10

1

3

1

3

9

X23

X24

X22

1 8

6

1

3

1

X20

NE Stufe Niedrig IN

NE Stufe Niedrig OUT

NE Stufe Mittel IN

NE Stufe Mittel OUT

NE Stufe HOCH IN

NE Stufe HOCH OUT

X19

-

Verdichter L‘

Verdichter L

1

5

X18

Fenster AUF

Aereco

Ölsumpf

UMV Kühlen

HK2/ 2. WW-Speicher

1

6

X17

Synchronmotor Heizen

Synchronmotor WW

Abtauventil

Kühlen

Mischer ZU

Mischer AUF

SF01

X1

1 12

AA02

X25

L N

X16

1 2

X2

Schrittmotor

1 10

Schalter Bodenblech

-

-

+5V

GND

Feuchtesensor

+5V

GND

P Heizung

+5V

X4

1 X3

10

1

6

-

-

HD-Sensor

+Ub

ND-Sensor

+Ub

X5

1

3

GND

IN

+5V

X51

1

5

FE

GND

RS485A

RS485B

+Ub

X6

1

4

+12V

CAN-H

CAN-L

GND

X7

1

4

+12V

CAN-H

CAN-L

GND

X8

1

5

Phase 4

Phase 3

Phase 2

Phase 1

+12V

X9

1

5

EXV

Verdampfer

Phase 4

Phase 3

Phase 2

Phase 1

+12V

X10

1

5

EXV

Heat-Pipe

Phase 4

Phase 3

Phase 2

Phase 1

+12V

X11

1

4

Zuluft-

Lüfter

GND

Drehzahl

+10V

PWM

X12

1

4

Abluft-

Lüfter

GND

Drehzahl

+10V

PWM

X13

1

4

WP-Lüfter

GND

Drehzahl

+10V

PWM

X14

1

8

Schnelllüftung

STB

O/K Betrieb

EVU

Signalanode

-

Klixon

HD-Wächter

X15

1

4 3 2 1

MA15* alternativ

BL01

%

5

U

4 3 bk bu bn wh bn gn ye gy ye wh bk rd bk ye rd og gy rd wh ye bk bk ye rd og gy gn wh bn ye gn wh bn ye gn wh bn ye

4 bn wh

BF01 gn bn wh bn wh zu AA04

3,4,5 zu XD04

9,10,11,12 ye rd bk wh

XD27

BP10

BP01

BP03

5

RF06

4

4

4

M MA04

MA20 bn gy wh gn ye

3

4

1

2

5

XD76

XD80

M

1~

M bn gn ye wh

1

2

3

4

MA06 rd bu ye wh

M

N

1~

L bn gn ye wh

1

2

3

4 rd bu ye wh

M

N

1~

L bn gn ye wh

1

2

3

4

MA22

MA15* alternativ rd bu ye wh

M

N

1~

L

MA21

XD79

BP05

1~

MA16

BP16 BT51 von X7

1,2,3,4 von

XD01

8,9,10 von XD24 und XE12 von

AA02-X24

3,4 von XD24 und XE12

XD78

MA07

EB01

MA01 www.stiebel-eltron.com LWZ 5/8 CS Premium | 37

MA04

MA06

MA07

MA10

MA13

MA15*

MA16

MA20

EB01

EB02

EB03

FC01

FC07

KF01

KF27

MA01

BT45

BT46

BT48

BT51

BT55

BT56

BT57

BT27

BT29

BT30

BT35

BT40

BT42

BT43

BT44

AA02 Integrierte Regelung

AA04 Inverter

AA06 Bedieneinheit

BF01 Volumenstromsensor Heizkreis

BL01 Schwimmerschalter Kondensat

BT01

BT02

BT11

BT12

BT20

BT21

BT22

BM03

BP01

BP03

BP05

BP10

BP11

BP12

BP16

Feuchtesensor Abluft

Drucksensor Hochdruck

Drucksensor Niederdruck

Druckwächter Hochdruck (HD)

Drucksensor Heizkreis (Wasser)

Differenzdrucksensor Luft

Differenzdrucksensor Luft 2

Druckschalter Signalanode

Temperaturfühler Heizungsvorlauf - PT 1000

Temperaturfühler Heizungsrücklauf - PT 1000

Temperaturfühler Vorlauf - WP - PT 1000

Temperaturfühler Rücklauf - WP - PT 1000

Temperaturfühler WW Speicher

Temperaturfühler WW Speicher Dom (optional)

Temperaturfühler WW Speicher Integral (optional)

Warmwasserfühler 2. WW-Speicher - PT1000 (optional)

Temperaturfühler Solarkollektor - PT1000

Temperaturfühler Außentemperatur

Temperaturfühler Ablufttemperatur

Temperaturfühler Heißgas - PT 1000

Temperaturfühler Verflüssiger (Frostschutz)

Temperaturfühler Verflüssigeraustritt

Temperaturfühler Abtauende (Verdampfereintritt)

Temperaturfühler Verdampferaustritt - PT 1000

Temperaturfühler Verdichtereintritt - PT 1000

Temperaturfühler Ölsumpf - PT 1000

Temperaturwächter Verdichter

Sicherheitstemperaturbegrenzer für MFG

Temperaturregler Zusatzheizung 2 kW (optional)

Sicherheitstemperaturbegrenzer für

Zusatzheizung 2 kW (optional)

Zusatzheizung MFG

Zusatzheizung Speicher BGC 2kW (optional)

Heizung Ölsumpf

Sicherung Inverter

Feinsicherung Kondensatpumpe

Schütz Verdichter

Relais Passivkühlung

Motor Verdichter

Motor elektronisches Expansionsventil Verdampfer

Motor elektronisches Expansionsventil Heat-Pipe

Umschaltventil Abtauen

Motor Umwälzpumpe

Motor Kondensatpumpe Bodenblech

Motor Umschaltventil (Heizen/WWB/alternativ)

Motor Umschaltventil (Kühlen)

Motor Wärmepumpenlüfter

XD27

XD76

XD77

XD78

XD79

XD80

XE03

XE08

XE09

XE12

XE15

XE16

XE17

AA02-X1

AA02-X2

AA02-X3

XD04

XD11

XD20

XD21

XD22

XD23

XD24

MA21

MA22

Motor Zuluftlüfter

Motor Abluftlüfter

RF01 Entstörfilter

RF06 Ferritringkern

SF01

XD01

XD02

XD03

Entstörtaster

Netzanschluss Verdichter/WP-Lüfter

Netzanschluss Durchflusserwärmer (MFG)

Netzanschluss Platine Eingänge 230V

Anschl. externe Temperaturfühler und CAN-Bus

Netzanschluss Zusatzheizung (optional / Speicher)

Anschlussklemme

Klemme L-Block

Klemme N-Block

Klemme 3-polig

Klemme 4-polig

Buchsenstecker CAN-Bus Bedienteil

Buchsenstecker Umschaltventil (alternativ)

Buchsenstecker Integralfühler

Buchsenstecker Zulüfter

Buchsenstecker Abluftlüfter

Buchsenstecker Wärmepumpenlüfter

Erdungsanschluss Klemmblech für extern



Erdungsanschluss Schaltkasten

Erdungsanschluss Klemmblech

Erdungsanschluss Schaltkasten unten

Erdungsanschluss Speicher



Buchsenstecker X3 Umwälzpumpe/ ext. Pumpen

AA02-X4

AA02-X5

AA02-X51

Buchsenstecker X4 Eingang Kleinspannung:

Druck- und Feuchtesensor, Schwimmerschalter

Buchsenstecker X5 Druckgeber HD/ND

Buchsenstecker X51 Volumenstromsensor

AA02-X6 Modbusanschluss

AA02-X7 Buchsenstecker X7 CAN-Bus

AA02-X8

AA02-X9

Buchsenstecker X8 CAN-Bus Bedieneinheit

Buchsenstecker X9 Schrittmotor

AA02-X10

AA02-X11

AA02-X12

AA02-X13

AA02-X14

AA02-X15

AA02-X16

AA02-X17

Buchsenstecker X10 EXV Verdampfer

Buchsenstecker X11 EXV Heat-Pipe

Buchsenstecker X12 Zuluftlüfter

Buchsenstecker X13 Abluftlüfter

Buchsenstecker X14 Wärmepumpenlüfter

Buchsenstecker X15 Eingang

Buchsenstecker X16 Netzspannung


AA02-X18

AA02-X19

AA02-X20

AA02-X22

AA02-X23

AA02-X24

AA02-X25


Buchsenstecker X19 Verdichter

Buchsenstecker X20 DHC Eingang/Ausgang

Buchsenstecker X22 Differenzdrucksensor Luft

Buchsenstecker X23 Differenzdrucksensor Luft 2

Buchsenstecker X24 Temperaturfühler

USB-Anschluss/ Servicestecker

iNSTaLLaTiON

Specification

10.6 Output graph

LWZ 5 CS Premium

6

5

4

3

3

4

1

2

5

6

2

-20 -15


Y Heating output [kW]

1 max. W35

2 max. W45

-10

LWZ 8 CS Premium

9

8

7

6

11

10

5

4

3

2

1

0

-20 -15


Y Heating output [kW]

1 max. W35

2 max. W45

-10


-5

-5

0 5

3 max. W55

4 min. W35

5 min. W45

6 min. W55

10

0 5

3 max. W55

4 min. W35

5 min. W45

6 min. W55

10

15

15

20

20 www.stiebel-eltron.com

1

2

3

4

5

6

iNSTaLLaTiON

Specification

10.7 Available external head of the circulation pump

900

800

700

600

500

400

300

200

100

0

0

X Flow rate [m 3 /h]

Y Pressure [hPa]

1 Pump rate 100 %

0,2 0,4

10.8 Fan curve

160

140

120

100

80

60

40

20

220

200

180

0

80 100 120 140

Application range

X Air flow rate [m³/h]

Y Average value, static pressure [Pa]

1 Maximum fan curve

2 System curves

160

0,6

180

0,8

200

1 1,2

2 Pump rate 85 %

3 Pump rate 65 %

4 Pump rate 45 %

1,4 1,6 1,8

220 240 260 280 300 320

0.30 Specific power consumption 0.30 Wh/m³






1

2

0,30

0,35

0,40

0,45

0,50

3

4

1

2 www.stiebel-eltron.com LWZ 5/8 CS Premium | 39

iNSTaLLaTiON

Specification

10.9 Data table

The output data refers to new appliances with clean heat exchangers. The power consumption of the integral auxiliary drives represents the maximum value and may vary subject to operating point. The power consumption of the integral auxiliary drives is included in the output details of the appliance (to EN 14511).

Heating output

Heating output at A-7/W35 (EN 14511)

Heating output at A2/W35 (EN 14511)

Heating output at A7/W35 (EN 14511)

Heating output, emergency/booster heater

Cooling capacity at A35/W7

Max. heating output

Power consumption

Power consumption at A-7/W35 (EN 14511)

Power consumption at A2/W35 (EN 14511)

Power consumption at A7/W35 (EN 14511)

Coefficients of performance

COP at A-7/W35 (EN 14511)

COP at A2/W35 (EN 14511)

COP at A7/W35 (EN 14511)

Sound emissions

Sound power level, indoor installation (EN 12102)

Max. sound power level, indoor installation

Sound power level, indoor installation, reduced night mode

Max. sound power level at air intake/discharge

Sound power level, reduced night mode, air intake/discharge

Application limits

Min. application limit, heat source

Max. application limit, heat source

Max. pressure drop, outdoor air

Min. installation room volume

DHW temperature with heat pump at A2

Hydraulic data

Cylinder capacity V

Energy data

Energy efficiency class, heat pump W55

Energy efficiency class, DHW heating with load profile XL

Energy efficiency class, DHW heating (load profile), moderate climate

Energy efficiency class

Electrical data

Max. power consumption, fan

Rated power consumption, fan

Power consumption, fan

Power consumption, circulation pump

Max. power consumption excl. emergency/booster heater

Emergency/booster heater fuse protection

Max. compressor fuse protection

Compressor fuse protection

Fuse protection, HP fan

Control unit fuse protection

Rated voltage, emergency/booster heater

Rated voltage, compressor

Rated voltage, HP fan

Rated voltage, control unit

Phases, compressor

Phases, HP fan

Phases, control unit

Frequency

Total power consumption

Starting current (with/without starting current limiter)

Phases, emergency/booster heater

40 | LWZ 5/8 CS Premium dB(A) dB(A) dB(A) dB(A) dB(A)

°C

°C

Pa m³

°C l kW kW kW kW kW kW kW kW kW

V

V

V

V

A

A

Hz

A

A kW

A

A

A

W

W

W

W

LWZ 5 CS Premium

201427

5.5

5.16

4.4

2.9 / 5.8 / 8.8

2.4

14.3

52

52

50

49.4/51.8

40.0/49.9

-20

35

25

7

50

235

3.19

1.38

0.93

2.61

3.74

4.74

A++

A

A (XL)

A++

1 x B 16

B 16

400

230

230

230

1/N/PE

1/N/PE

170

100

100

< 45

5.3

3 x B 16

1 x B 25

1 x B 16

1/N/PE

50

20

-/8

3/N/PE www.stiebel-eltron.com

LWZ 8 CS Premium

201290

8.34

5.16

4.4

2.9 / 5.8 / 8.8

2.69

17.2

52

59

52

47.6/58.5

41.5/48.3

-20

35

25

7

50

235

3.19

1.38

0.93

2.61

3.74

4.74

A++

A

A (XL)

A++

1 x B 16

B 16

400

230

230

230

1/N/PE

1/N/PE

170

100

100

< 45

5.3

3 x B 16

1 x B 25

1 x B 25

1/N/PE

50

20

-/8

3/N/PE

iNSTaLLaTiON

Specification

Versions

Refrigerant

Refrigerant charge

CO

2

equivalent (CO

2 e)

Global warming potential of the refrigerant (GWP100)

IP rating

Filter class, extract air

Filter class, supply air

Filter class, outdoor air

Application area, living space

Dimensions

Height when tilted

Height

Width

Depth

Weights

Weight, function module

Weight, full

Weight, cylinder module

Weight, empty

Connections

Connection, heating system

DHW connection

Solar circuit connection

Supply air/extract air connection

Condensate drain

Outdoor air/exhaust air connection

Heating water quality requirements

Water hardness

Conductivity (softening)

Conductivity (desalination)

Chloride

Oxygen 8-12 weeks after filling (softening)

Oxygen 8-12 weeks after filling (desalination) pH value (with aluminium fittings) pH value (without aluminium fittings)

Values

Min. flow rate, heating

Supply air/extract air flow rate

Heating flow rate (EN 14511) at A7/W35, B0/W35 and 5 K

Heat recovery level up to

Nominal air flow rate

Outdoor air/exhaust air flow rate

Available external pressure, ventilation at 230 m 3 /h

Available external pressure, outdoor/exhaust air

Safety valve, DHW

Max. flow temperature

Safety valve, heating

Expansion vessel volume

Expansion vessel pre-charge pressure

Min. living space, cooling, active (without buffer cylinder)

Min. flow rate, cooling (without buffer cylinder)

LWZ 5 CS Premium

R410A

2.95

6.16

2088

IP1XB

ISO Coarse > 60 % (G4) ePM10 ≥ 50 % (M5)

ISO Coarse > 30 % (G2)

< 220

DN 22

DN 22

DN 22

DN 160

22

410x155 oval

2020

1885

1430

812

243

670

177

420

=3

<1000

20-100

<30

<0.02

<0.1

8.0-8.5

8.0-10.0

0.7

80-300

1.300

90

240

1000

100

50

1

60

0.3

15

0.075

40

0.7

kg kg kg kg mm mm mm mm mm mm m² kg t

MPa

°C

MPa l

MPa m² m³/h m³/h m³/h m³/h

% m³/h m³/h

Pa

Pa

°dH

μS/cm

μS/cm mg/l mg/l mg/l

LWZ 8 CS Premium : You can use the „STARTING CURRENT LIMITER“ parameter to limit the power consumption of the compressor. The parameter can be found in the menu „CONTRACTOR / REFRIGERATION UNIT“.

Further details

Maximum altitude for installation m

LWZ 5 CS Premium

201427

2000

LWZ 8 CS Premium

201290

2000

LWZ 8 CS Premium

R410A

2.95

6.26

2088

IP1XB

ISO Coarse > 60 % (G4) ePM10 ≥ 50 % (M5)

ISO Coarse > 30 % (G2)

< 220

DN 22

DN 22

DN 22

DN 160

22

410x155 oval

2020

1885

1430

812

243

670

177

420

=3

<1000

20-100

<30

<0.02

<0.1

8.0-8.5

8.0-10.0

0.7

80-300

1.300

90

240

1000

100

50

1

60

0.3

15

0.075

40

0.7


NOTES


NOTES


Deutschland

STIEBEL ELTRON GmbH & Co. KG

Dr.-Stiebel-Straße 33 | 37603 Holzminden

Tel. 05531 702-0 | Fax 05531 702-480 [email protected]

www.stiebel-eltron.de

Verkauf

Kundendienst

Tel. 05531 702-110 | Fax 05531 702-95108 | [email protected]

Tel. 05531 702-111 | Fax 05531 702-95890 | [email protected]

Ersatzteilverkauf Tel. 05531 702-120 | Fax 05531 702-95335 | [email protected]

Australia

STIEBEL ELTRON Australia Pty. Ltd.

294 Salmon Street | Port Melbourne VIC 3207


www.stiebel-eltron.com.au

Austria

STIEBEL ELTRON Ges.m.b.H.

Gewerbegebiet Neubau-Nord

Margaritenstraße 4 A | 4063 Hörsching


www.stiebel-eltron.at

Belgium

STIEBEL ELTRON bvba/sprl

't Hofveld 6 - D1 | 1702 Groot-Bijgaarden


www.stiebel-eltron.be

China

STIEBEL ELTRON (Tianjin) Electric Appliance

Co., Ltd.

Plant C3, XEDA International Industry City

Xiqing Economic Development Area

300085 Tianjin

Tel. 022 8396 2077 | Fax 022 8396 2075 [email protected]

www.stiebeleltron.cn

Czech Republic

STIEBEL ELTRON spol. s r.o.

Dopraváků 749/3 | 184 00 Praha 8

Tel. 251116-111 | Fax 235512-122 [email protected]

www.stiebel-eltron.cz

Finland

STIEBEL ELTRON OY

Kapinakuja 1 | 04600 Mäntsälä

Tel. 020 720-9988 [email protected]

www.stiebel-eltron.fi

France

STIEBEL ELTRON SAS

7-9, rue des Selliers

B.P 85107 | 57073 Metz-Cédex 3


www.stiebel-eltron.fr

Hungary

STIEBEL ELTRON Kft.

Gyár u. 2 | 2040 Budaörs


www.stiebel-eltron.hu

Japan

NIHON STIEBEL Co. Ltd.

Kowa Kawasaki Nishiguchi Building 8F

66-2 Horikawa-Cho

Saiwai-Ku | 212-0013 Kawasaki


www.nihonstiebel.co.jp

Netherlands

STIEBEL ELTRON Nederland B.V.

Daviottenweg 36 | 5222 BH 's-Hertogenbosch


www.stiebel-eltron.nl

Poland

STIEBEL ELTRON Polska Sp. z O.O.

ul. Działkowa 2 | 02-234 Warszawa


www.stiebel-eltron.pl

Russia

STIEBEL ELTRON LLC RUSSIA

Urzhumskaya street 4, building 2 | 129343 Moscow

Tel. 0495 7753889 | Fax 0495 7753887 [email protected]

www.stiebel-eltron.ru

Slovakia

STIEBEL ELTRON Slovakia, s.r.o.

Hlavná 1 | 058 01 Poprad


www.stiebel-eltron.sk

Switzerland

STIEBEL ELTRON AG

Industrie West

Gass 8 | 5242 Lupfig


www.stiebel-eltron.ch

Thailand

STIEBEL ELTRON Asia Ltd.

469 Moo 2 Tambol Klong-Jik

Amphur Bangpa-In | 13160 Ayutthaya

Tel. 035 220088 | Fax 035 221188 [email protected]

www.stiebeleltronasia.com

United Kingdom and Ireland

STIEBEL ELTRON UK Ltd.

Unit 12 Stadium Court

Stadium Road | CH62 3RP Bromborough


www.stiebel-eltron.co.uk

United States of America

STIEBEL ELTRON, Inc.

17 West Street | 01088 West Hatfield MA


www.stiebel-eltron-usa.com

4<AMHCMO=dijcaa>

Irrtum und technische Änderungen vorbehalten! | Subject to errors and technical changes! | Sous réserve d‘erreurs et de modifications techniques! | Onder voorbehoud van vergissingen en technische wijzigingen! |

Salvo error o modificación técnica! | Excepto erro ou alteração técnica | Zastrzeżone zmiany techniczne i ewentualne błędy | Omyly a technické změny jsou vyhrazeny! | A muszaki változtatások és tévedések jogát fenntartjuk! | Отсутствие ошибок не гарантируется. Возможны технические изменения . | Chyby a technické zmeny sú vyhradené! Stand 9627

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