STIEBEL ELTRON WPL 15-25 A2W Premium Air Source Heat Pump

Specifications

• Product: Air source heat pump
• General Information: Contains operation and installation instructions

Product Usage Instructions

Operation

1. General Information

• Read through the relevant documents provided with the product to understand its operation.
• Follow the safety instructions outlined in the documentation to ensure safe usage.
• Familiarize yourself with the symbols used in the documentation for better understanding.
• Make sure to use standardized units of measurement for accurate readings.

2. Safety

• Only use the product for its intended purpose as described in the manual.
• Adhere to all safety instructions provided to prevent accidents or damage.

3. Register your product

• Complete the product registration process to avail of any warranty or support services.

4. Appliance Description

• Understand the properties and functions of the appliance for efficient usage.

Installation

8. Safety

• Follow general safety instructions during the installation process.
• Adhere to all relevant instructions, standards, and regulations for proper installation.

9. Appliance Description

• Ensure all necessary accessories are included and installed correctly.

12. Electrical Connection

• Follow instructions for accessing the terminal area and connecting the appliance to power.
• Refer to specific sections like WPL 15/25 A2W Premium for detailed electrical connection guidelines.

13. Commissioning

• Perform necessary checks before commissioning the appliance for operation.
• If using an external heat generator, follow the guidelines provided for proper integration.

14. Settings

• Adjust settings as required, including activating silent mode for reduced noise levels.

15. Appliance Shutdown

• Understand standby mode and procedures in case of power interruptions for safe appliance shutdown.

16. Maintenance

• Regular maintenance is essential for optimal performance, follow maintenance guidelines provided.

17. Troubleshooting

• If issues arise, refer to troubleshooting section for guidance on resolving common problems.

FAQs

• Q: How often should I perform maintenance on the air source heat pump?
  • A: It is recommended to perform maintenance every 6-12 months depending on usage and environmental conditions. Refer to the maintenance section for detailed instructions.
• Q: What should I do if the appliance does not start up after installation?
  • A: Check the electrical connections, power source, and ensure all settings are correctly configured. If issues persist, refer to the troubleshooting section for further assistance.

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– The appliance may be used by children aged 8 and older and persons with reduced physical, sensory or mental capabilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the potential risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.
– 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 1/8 (3 mm) contact separation.
– Maintain the minimum clearances to ensure trouble-free operation of the appliance and facilitate maintenance work.
– Maintenance work, such as checking the electrical safety, must only be carried out by a qualified contractor.
– We recommend regular inspection (to establish the current condition of the system), and maintenance by a qualified contractor if required (to return the system to its original condition).
– Following disconnection from the power supply, parts of the appliance may remain energized for 2 minutes until the inverter capacitors have discharged.
– Never interrupt the power supply, even outside the heating season. The system’s active frost protection is not guaranteed if the power supply is interrupted.
– If the heat pump is completely switched off and there is a risk of frost, drain the system on the water side.

General information

The chapters “Special information” and “Operation” are intended for both users and qualified contractors.
The chapter “Installation” is intended for qualified contractors.
Note Read these instructions carefully before using the appliance and retain them for future reference. Pass on the instructions to a new user if required.

1.1 Relevant documents
Instructions for the WPM heat pump manager
Operating and installation instructions for system components
Commissioning checklist for heat pump

1.2 Safety instructions

1.2.1 Structure of safety instructions

!

KEYWORD Type of risk Here, possible consequences are listed that may result

from failure to observe the safety instructions.

fSteps to prevent the risk are listed.

1.2.2 Symbols, type of risk

Zù
!

`¼Ïê÷ Injury

Electrocution

1.2.3 Keywords

:tqHV DANGER
WARNING
CAUTION

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

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1.3 Other symbols in this documentation
Note General information is identified by the adjacent symbol. fRead these texts carefully.

Zù
!

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

fThis symbol indicates that you have to do something. The action you need to take is described step by step.
1.4 Units of measurement
Note All measurements are given in inches and (mm) unless stated otherwise.
1.5 Standardized output data
Information on determining and interpreting the specified standardized output data.
1.5.1 AHRI 550/590
The output data specifically mentioned in texts, diagrams and technical data sheets has been calculated according to the test conditions of the standard shown in the heading of this section.
Generally, the test conditions stated above will not fully match the conditions found at the installation site of the system user.
The usage of antifreeze glycol is strongly recommended. It has an influence on the efficiency and heat capacity, depending on the concentration of glycol.
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.
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.

Safety

2.1 Intended use
Observe the application limits listed in chapter “Specification / Data table”.
The appliance is intended for domestic use. It can be used safely by untrained persons. The appliance can also be used in a non-domestic environment, e.g. in a small business, as long as it is used in the same way.

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

2.2 Safety instructions
Observe the following safety instructions and regulations.
– Only qualified contractors may carry out the electrical work and installation of this appliance.
– The qualified contractor is responsible for adherence to all applicable regulations during installation and commissioning.
– The appliance should only be operated once it is fully installed and all safety equipment has been fitted.
– Protect the appliance from dust and dirt during building work.

!

WARNING Injury The appliance may be used by children over 8 years of

age and persons with reduced physical, sensory or men-

tal capabilities or a lack of experience and expertise,

provided that they are supervised or they have been

instructed on how to use the appliance safely and have

understood the potential risks. Children must never play

with the appliance. Children must never clean the ap-

pliance or perform user maintenance unless they are

supervised.

!

WARNING Injury fFor safety reasons, only operate the appliance with

the casing closed.

WARNING Electrocution Contact with live components presents a threat to life. Damage to the electric insulation or to individual components may result in a threat to life. fIf there is damage to the insulation, disconnect the
power supply and arrange a repair. All work on the electrical installation must be carried out by a qualified contractor.

WARNING Scalding The water in the DHW tank can be heated to temperatures in excess of 149°F (65°C). There is a risk of scalding at outlet temperatures in excess of 110°F (43°C). fEnsure you do not come into contact with the water
when discharged.

WARNING Burns Touching hot components can lead to burns. When working on hot components, always wear protective working clothing and safety gloves. The pipework connected to the DHW outlet of the appliance can reach temperatures in excess of 149°F (65°C).

WARNING Burns In the case of a fault, temperatures up to the high limit safety cut-out temperature limit can occur (See 18.6, “Data table”, pg. 37).

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WARNING Scalding The appliance is filled with refrigerant at the factory. In case of leaking refrigerant, avoid coming into contact with the refrigerant or inhaling the released vapors. Ventilate the affected spaces.

!

CAUTION Injury Never place any objects on top of the appliance. If objects

are left on the appliance, noise emissions may increase

due to resulting vibrations, and the objects could fall

and cause injury.

!

CAUTION To reduce the risk of excessive pressures and tempera-

tures in this water heater, install temperature and pres-

sure protective equipment required by local codes and

no less than a combination temperature and pressure

relief valve certified by a nationally recognized testing

laboratory that maintains periodic inspection of produc-

tion of listed equipment or materials, as meeting the re-

quirements for Relief Valves and Automatic Gas Shutoff

Devices for Hot Water Supply Systems, ANSI Z21.22. This

valve must be marked with a maximum set pressure not

to exceed the marked maximum working pressure of the

water heater. Install the valve into an opening provided

and marked for this purpose in the water heater, and

orient it or provide tubing so that any discharge from

the valve exits only within 6 inches above, or at any

distance below, the structural floor, and does not contact

any live electrical part. The discharge opening must not

be blocked or reduced in size under any circumstances.

! Material losses Only operate the appliance when the DHW tank has been filled with water.
! Material losses If you disconnect the appliance from the power supply, it is no longer protected against frost. fDo not interrupt the power supply to the appliance.
! Material losses Never cover this appliance. Covering the air intake or air discharge leads to a reduced air supply. If the air supply is restricted, the operational reliability of the appliance cannot be guaranteed.
! Material losses Heating liquids other than potable water or a water/propylene glycol mixture is not permitted.

Register your product

Note: You must register this product within 90 days of purchase on our web site in order to activate the standard warranty or to be eligible for the extended warranty. Go to our web site at www.stiebel-eltron-usa.com and click on register your product.
Before beginning the registration process, we suggest that you gather the necessary information which will be as follows:
1 Serial number on the type plate (the type plate label is located at the top left of the unit when facing the air outlet)
Type, Example: WPL A2W 15 Premium
Number listed after “Nr.” Place of Purchase Purchase Date First & Last Name Email address Physical Address Phone Number Installation Date
If you have any questions concerning the registration process or warranty options, please contact Stiebel Eltron USA directly at (800)-582-8423.

Appliance description

4.1 Properties
The appliance is an air source heat pump that operates as a heating or cooling heat pump for outdoor installation. Heat is extracted from the outdoor air at a low temperature level, and is then transferred to the heating water at a higher temperature. The heating water can be heated up to a flow temperature of 149°F (65°C).
The appliance is equipped with an electric emergency/booster heater (NHZ). To ensure heating operation and the provision of high DHW temperatures, the electric emergency/booster heater is activated as an emergency heater if the dual mode point is undershot in mono mode operation. If the same thing happens in mono energetic operation, the electric emergency/booster heater is activated as a booster heater.
This appliance has further operational characteristics: – Suitable for underfloor and radiator heating systems. – Preferred for low temperature heating systems. – Extracts heat from the outdoor air even at outside tempera-
tures of -4°F (-20°C). – Corrosion-protected, external casing made from hot- dipped
galvanized sheet steel plus powder coated finish. – Comprises all components and safety equipment required for
operation. – Filled with non-combustible safety refrigerant. – The product is delivered without a cord.

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Note For centralized control of the heating system, you would need either the standalone WPM heat pump manager or the WPM integrated into the HSBC 300 Integral.
4.2 Function
4.2.1 Heating
Heat is extracted from the outdoor air via the heat exchanger (evaporator) on the air side. The evaporated refrigerant is compressed by a compressor. This process requires electrical energy. At this point, the refrigerant is at a higher temperature and pressure level. A further heat exchanger (condenser) transfers the heat to the heating circuit. The refrigerant then passes an electronically controlled expansion valve, expands again, and the cycle restarts from the beginning.
If the ambient air temperature drops below 45°F (7°C), the moisture of the air freezes on the evaporator fins and hoarfrost builds up.
The amount of hoarfrost build up depends on the relative humidity of the air, and is automatically defrosted from time to time. Water created by this defrosting process collects in the heated defrost pan and is drained off.
! Material losses It is strongly recommended to install a buffer tank. The buffer tank acts like an air separator, and a proper flow rate is provided to avoid high pressure failure. During the defrost cycle, the fan is switched off and the heat pump circuit is reversed. The heat required for defrosting is drawn from the buffer tank.
The heat pump automatically reverts to heating mode at the end of the defrost cycle.
! Material losses In dual mode operation, return water from the second heat generator may flow through the heat pump. Please note that the return temperature must be no higher than 140°F (60°C).
4.2.2 Cooling
! Material losses The heat pump is not suitable for continuous, year-round cooling. fObserve the application limits (see chapter “Specification / Data table”).
! Material losses In cooling mode, condensate can form when the dew point temperature is undershot. fTake suitable measures to prevent the formation of condensate.

Rooms are cooled by reversing the heat pump circuit. Heat is extracted from the heating water and the evaporator transfers this heat to the outdoor air.
Area cooling and fan cooling require the installation of a remote control unit (FET) in a reference room to capture the relative humidity and the room temperature as part of dew point monitoring.
With fan cooling, it is also necessary to install a buffer tank.
Heat pump application limit
The heat pump is switched off if the ambient temperature is below -4°F (-20°C) in heating mode, or the selected lower application limit for cooling (COOLING LIMIT parameter). The appliance is intended to be used at an altitude of up to 6,561 ft (2000 m).

Settings

The system is operated exclusively via the WPM heat pump manager.
If the Heat pump is delivered with a system tank HSBC Integral, the WPM is integrated in the indoor system tank assembly, and the WPM is configured with default parameter setting for the complete system. If the heat pump is delivered without a HSBC Integral system tank an SD card is delivered with the WPM for initial setup.
SD card default Parameter setting:
The heating curve default value is set for low energy applications: 0.6 (10°F [-12.2°C] ambient temperature means 113°F [45°C] leaving water temperature)
The DHW temperature setting default value is 140°F (60°C).
Summer mode for cooling is activated at 78°F (26°C) ambient air temperature.
Adjust the heating curve for buildings built to a lower insulationstandard to 1.0. An ambient temperature of -4°F (-20°C) results in a 149°F (45°C) leaving water temperature.
In cooling applications, an FET (remote control) is required.
The FET needs to be installed in a reference room of the building to detect the room temperature and relative humidity.
If an FET is installed, the set point value for the leaving water temperature of the heat pump is controlled using the room temperature sensor information. The room temperature sensor is integrated inside the FET. fTo adjust the default settings of the WPM, please observe the
instructions for the WPM unit.
6. Maintenance and care
! Material losses Maintenance work, such as checking the electrical safety, may only be carried out by a qualified contractor.
A damp cloth is sufficient for cleaning all plastic and sheet metal parts. Never use abrasive or corrosive cleaning agents.
Regularly check the condensate drain (visual inspection). Remove any contaminants and blockages immediately.

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1. 2.
1

Tù¼ The fan runs when the compressor is switched off.
The appliance produces rhythmic scraping or grinding noises.

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At outside temperatures below 50°F (10°C), the fan is regularly started at the lowest speed when the compressor is idle. This prevents the evaporator and fan from freezing or icing up due to water draining off. At temperatures above the freezing point, the time between two defrost cycles is increased, thereby improving overall efficiency.

Ice has formed on the air grill, Call your qualified contrac-

on the fan blades or in the air tor (see chapter “Installa-

routing.

tion / Troubleshooting / Fan

noise”).

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1 Inspection port
! Material losses Keep the air discharge and intake apertures free from snow and leaves.

Remove any leaves or other foreign bodies from the evaporator fins periodically.
We recommend a regular inspection (to establish the current condition of the system), and maintenance by a qualified contractor as required (to restore the system to the ideal condition).

Troubleshooting

Tù¼

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The heat pump is The WPM is not installed and/ Activate the WPM and

not operating. or the ambient air temperature check the installation of the

sensor is not installed.

ambient air temperature

sensor. It need to be placed

on the northern side of the

building not affected by

solar radiation.

Water is leaking The condensate drain may be Clean the condensate drain

from the appli- blocked.

as described in “Mainte-

ance.

nance and care”.

The heater gets warm, but the rooms are not heated to the required temperature.

The dual mode temperature is Increase the dual mode

set too low.

temperature to e.g. 32°F

(0°C).

The heater gets warm, but the rooms are not heated to the required temperature.

The building is new construc- Increase the dual mode

tion, and is in the screed dry- temperature to 41°F (+5°C).

ing phase.

After 1 to 2 years the dual

mode temperature can be

reset to e.g. 27°F (-3°C).

Condensate is The heat pump extracts heat

collecting on the from the outdoor air in order

outside of the to heat the building. This can

appliance.

cause the humidity in the

outdoor air to accumulate as

dew or frost on the cooled

heat pump casing. This is not

a defect.

Note Even when the condensate has been drained correctly, it is not unusual for water to drip from the appliance onto the ground.
If you cannot solve the problem, contact your qualified contractor. To facilitate and speed up your request, provide the number from the type plate. The type plate is located at the top left-hand side of the casing, when facing the air outlet. Please contact Stiebel Eltron technical support at (800)-582-8423 or (413)-247-3380.
Sample type plate
1

xxxxxxxxxxxxxxxxxx

Montageanweisung beachten! Dichtheit geprüft!
1 Number on the type plate

Made in Germany

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Preparation

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8. Safety
Only a qualified contractor should carry out installation, commis-

!

sioning, maintenance and repair of the appliance.

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

The appliance is designed for siting in front of a wall. Observe the minimum clearances. If the appliance is installed in an open space or on a roof, protect the air intake side. Do this by erecting a wall to shield it against the wind.

8.2 Instructions, standards and regulations
Note Observe all applicable national and regional regulations and instructions.
The appliance is tested according to:
– IEC 61000-3-11
– UL 60335-2-40:2017 Ed.2
– UL 60335-1:2016 Ed.6
– CSA C 22.2 60335-2-40 : 2012 Ed.1+U1
– CAN/CSA E 60335-1/4E issued 2003/04/01 Ed.4
– AHRI Standard 550/590 (I-P)-201
– Energy star tested according to AHRI 550/590 2018
9. Appliance description
The appliance offers frost protection for the water driven pipe connection tubing. The integral frost protection circuit starts the circulation pump in the heat pump circuit automatically at a condenser temperature of 46°F (8°C), and thereby ensures circulation in all water-carrying sections. If the temperature inside the buffer tank drops, the heat pump starts automatically no later than when the temperature falls below 41°F (+5°C).
A mixture of at least 25% polypropylene glycol/water is required to protect against frost damage during a power outage and to avoid system corrosion issues. The concentration should be not less than 25%.

10.1 Sound emissions
The appliance is louder on the air intake and air discharge sides than on the two enclosed sides. Take the following information into account when selecting the installation location.
Note For details regarding the sound power level, see chapter “Specification / Data table”.
– Lawn areas and shrubs help reduce the spread of noise.
– Noise propagation can also be reduced through dense palisades or similar objects.
fEnsure that the entire appliance frame is in full contact with the substrate. Uneven substrates can increase sound emissions.
fEnsure that the air intake direction is the same as the dominant wind direction. Air should not be drawn in against the wind.
fEnsure that the air intake and air discharge are never directed towards noise-sensitive rooms of the house, e.g. bedrooms, or neighboring houses.
fAvoid installation on large, echoing floor areas, e.g. tiled floors.
fAvoid installation between reflective building walls. Reflecting building walls can increase the noise level.

9.1 Accessories

9.1.1 Required accessories – WPM heat pump manager

9.1.2 Additional accessories – FET remote control – HZB 2 ribbon heater – SK 1 T-support – WK 2 Wall-mount – AS-WP connection set, item no. 203247

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10.2 Minimum clearances

10.2.1 Minimum clearances with cascades

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f Maintain the minimum clearances to ensure trouble-free operation of the appliance and facilitate maintenance work.

3

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f Never install the appliance in a recess. Two sides of the ap-

pliance must remain exposed.

! Material losses Please note that both the flow of outdoor air into the appliance, and the flow of exhaust air from the appliance must be unimpeded. If the air intake and discharge of the appliance are obstructed by surrounding objects, this may cause a thermal short circuit.

1 Main wind direction 2 Air discharge 3 Wall or wind protection

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10.3 Installation near ocean/salt water

fProtect the flow and return lines against frost with sufficient thermal insulation. The thermal insulation must be at least twice as thick as the diameter of the pipe. Provide thermal insulation in accordance with applicable regulations.
fProtect all pipe fixings and external wall ducts with anti-vibration insulation.

1640 ft. (>500 m)

1 2

3

4

1 Main wind direction 2 Building, wall or windbreak 3 WPL unit 4 Air outlet
fMake sure that the air inlet direction is the same as the main wind direction. If the main wind direction is from the sea (salinity >2%), keep a minimum distance of at least 1640 ft. (500 m) from the ocean.

10.4 Preparing the installation location

!

WARNING Injury The discharged cold air can cause condensation to be

formed in the vicinity of the air outlet. fEnsure that no risk of slipping due to wet conditions

or ice formation occurs on adjacent footpaths and

driveways at low temperatures.

fObserve chapter “Sound emissions”.
fEnsure that the appliance is accessible from all sides.
fEnsure that the mounting surface is level, even, solid and permanent.
fProvide a recess (space) in the base to enable supply lines to be routed into the appliance from below.

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Note When routing the condensate hose, observe chapter “Installation / Condensate drain”.

10.6 Siting
fWhen siting the appliance, observe the air discharge direction.
fTo avoid mold buildup, make sure that the appliance does not blow cold air directly towards building structures.
fPosition the appliance on the prepared mounting surface or on a suitable support.
10.6.1 Siting on a slab foundation
Note Allow the conduits for the supply lines to protrude slightly above the slab. Ensure that no water can enter the conduit.

Foundations with recess (WPL 15 A2W Premium)

3
5 ½ 7 (140) (200)
4

1
51 (1300)

5
4 (410)

29 ½ (750) 4
(100) 3 (75)
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! Material losses fEnsure that all electric cables, connections, and conduit are placed and secured in such a way to keep them free of damage during lawn cutting or landscaping operations.
10.5 Installing the supply lines
The supply lines are all electric cables plus the flow and return lines. – To facilitate connection to the appliance, we recommend
using flexible supply lines in the case of outdoor installation. fAlso protect all supply lines against humidity, damage and
UV radiation by means of a conduit. fUse only weatherproof cables, e.g. NYY.

2
1 Air intake 2 Air discharge 3 Main wind direction 4 Supply line recess 5 Condensate drain hole, minimum diameter 2¾ (70 mm) fEnsure that the slab includes the necessary recesses.

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Foundations with recess (WPL 25 A2W Premium)

3
5 ½ 7 (140) (200)
4

1
59 (1500)

5
4 (410)

Note To secure the appliance against toppling over, it can also be fixed to the slab with screws. fUse the accessories with which the appliance was
secured to the transport pallet.

29 ½ (750) 4
(100) 3 (75)
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2

1 Air intake 2 Air discharge 3 Main wind direction 4 Supply line recess 5 Condensate drain recess, minimum diameter 2 ¾ (70 mm) fEnsure that the slab includes the necessary recesses.
Installation on foundations
Note Installation directly on foundations is not recommended in climates where snow buildup is a concern. Excessive snow buildup may block the air intake of the WPL and interrupt normal operation. If installing in such a climate, consider one of the alternative installation options presented in this manual.

fHook brackets into the four lateral slots on the front and back. Ensure you are using the correct brackets for the left and right hand slots.
fPosition the brackets so that the groove on the bracket is hooked into the appliance.
fSecure the appliance to the foundations using the brackets and suitable rawl plugs and screws. Do not use the screws with which the appliance was secured to the transport pallet.

4 21

C BA
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3
5
A 4 (100 mm) B 12 (300 mm) C Depth of frost line 1 Heating flow 2 Heating return 3 Condensate drain conduit 4 Slab 5 Gravel bed
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T-support SK 1
Note f Install a ribbon heater when mounting on the wall
bracket or T-support (see chapter “Electrical connection / Ribbon heater”).

(94.6 l) per heat pump is required to provide adequate defrost energy.
10.9 Preparing the electrical installation
WARNING Electrocution Carry out all electrical connection and installation work in accordance with national and regional regulations.

B A
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1

2

10

8

5

9

3 7
4 6
A Depth of frost line B 12 (300 mm) 1 Heating flow 2 Heating return 3 Conduit for supply lines 4 Foundation 5 T-support 6 Gravel bed 7 Condensate drain conduit 8 Condensate drain 9 Ribbon heater 10 Cover f Observe the structural limits of the T-support used. f See the dimensioned connection drawing for the correct
spacing between holes (see chapter “Specification / Dimensions and connections”).
10.7 WPM heat pump manager
A WPM heat pump manager is required to operate the appliance. This controls the entire heating system. If the heat pump is installed with the indoor HSBC Integral system tank, a WPM is included with preset parameters for easy initial setup. f Observe the WPM installation instructions during installation.
10.8 Buffer tank
! Material losses A buffer tank with diffusion-proof insulation is essential to enable cooling by means of fan convectors. The emergency/booster heater must be connected.

WARNING Electrocution 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. This requirement can be met by contactors, isolators, fuses, etc.
! Material losses The specified voltage must match the mains voltage. Observe the type plate.
! Material losses Provide separate fuses/MCBs for the three power circuits, i.e. those of the appliance, the control unit and the electric emergency/booster heater.
f Use cables with the relevant cross-sections. Carry out the field wiring according to NEC. Use SJT type cable for outdoor applications. The cable needs to be UV and oil resistant.

B
ϼ |OEêÖ 1x B 20 A 1x B 35 A 1x B 30 A
1x B 15 A

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Compressor WPL 15 A2W Premium
Compressor WPL 25 A2W Premium
Electric emergency/ booster heater WPL 15 A2W Premium WPL 25 A2W Premium
Control unit

AWG 10 AWG 8 AWG 10
AWG 16

The electrical data can be found in the chapter “Specification”. A shielded 4-wire 18 AWG cable is required for the data bus connection.

Note The appliance includes an inverter for the variable speed compressor. In the event of a fault, inverters can cause DC residual currents. If RCDs are provided, they must be type B AC/DC-sensitive. A DC residual current can block type A RCDs. f Ensure that the appliance power supply is discon-
nected from the distribution board.

We recommend the use of a buffer tank to ensure trouble-free appliance operation.
The buffer tank provides hydraulic separation of the volume flows in the heat pump circuit and heating circuit, and also serves as an energy source for defrosting. A buffer volume of at least 25 gal
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Installation

Note The device is designed in such a way that it can be positioned and connected without removing the cover or side panels.
11.1 Transport
f When transporting the appliance, be aware of its center of gravity. The center of gravity is in the area where the compressor is located.
f Protect the appliance against heavy impact during transport. f Use the recessed grips provided on the sides of the
appliance.

f Before connecting the heat pump, flush the pipework thoroughly with suitable water. Foreign bodies, such as welding pearls, rust, sand or sealant can impair the operational reliability of the heat pump.
f Connect the heat pump on the heating side. Check for tightness.
f Make sure that the tube connections are correct: the leaving water tube (hot) is on the right-hand side, and the incoming (cold) is on the left-hand side.
f Provide thermal insulation for the pipes in accordance with applicable regulations.
f When sizing the heating circuit, observe the internal pressure differential (see chapter “Specification / Data table”).
11.3 Flow and return connection
! Material losses In cooling mode, condensate can form when the dew point temperature is undershot. f Take suitable measures to prevent the formation of condensate.

D0000071298 26_03_01_1871

– If the appliance needs to be tilted during transport, this must only be for a short time and it must only be tilted on one of its longitudinal sides. When transporting the appliance, ensure the compressor is on the upper appliance side.
– The longer the appliance is tilted, the greater the amount of redistribution of the refrigerant oil inside the system.
f Wait approximately 30 minutes before starting the appliance after it has been tilted.
11.2 Heating water connection
! Material losses The heating system to which the heat pump is connected must be installed by a qualified contractor in accordance with the water installation drawings that are part of the technical guide.
To facilitate connection to the heating system, push-fit connectors are enclosed with the appliance (see chapter “Fitting the push-fit connectors”).
Use the 1 inch copper tubes delivered with the heat pump. They are expanded on the installation side for soldering.
The non-expanded end of the tube needs to fit in the push-fit connector.
For soldering, remove the copper tubes from the push fit connector.

1 2
4

3
1 Leaving water port (hot) 2 Heating return (cold) 3 Drain 4 Purge valve f Connect the heat pump to the heating circuit. Check for
tightness.
11.4 Fitting the push-fit connectors
Note The plastic push-fit connectors are not suitable for installation in the DHW line or the solar circuit. f Install the push-fit connectors only in the heating
circuit.

!

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

Never use a tool.

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How the push-fit connectors work
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.

11.5 Oxygen diffusion
! Material losses Do not use this device in open vented heating systems. Use oxygen diffusion-proof pipes in heating systems with plastic pipework.

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 main body.

23

4

1

In heating systems with plastic pipes that are permeable to oxygen and in open vented heating systems, oxygen diffusion may lead to corrosion on the steel components of the heating system (e.g. on the indirect coil of the DHW tank, on buffer tanks, steel radiators or steel pipes).
f With heating systems that are permeable to oxygen, separate the heating system between the heating circuit and the buffer tank using an indirect heating coil or plate heat exchanger.

D0000088519

1 Retainer 2 Screw cap 3 Gap between screw cap and main body 4 Main body

D0000088520

Pipe Ø Depth of insertion A

11/8 (28 mm) max. 1¾ (44 mm)

!

Material losses Pipe ends must be de-burred.

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 by hand against main body as far as it will go. 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. 1/16 (2 mm). Press the retainer back with your fingers and hold on to it. f Pull out the inserted pipe.

! 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 cross-sections.

11.6 Filling the heating system

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

Use propylene glycol for boiler applications with a minimum concentration of 25% for frost protection.

Do not use automotive glycol. Automotive glycol causes deposits in the heat exchanger and may destroy the heat exchanger.

The glycol concentration depends on the coldest ambient temperatures experienced locally.

&ùù ¼OE|OEê

%OE OE¼OEê OE¼¼|OE¼

30% concentration

8°F (-13.3°C)

40% concentration

-7°F (-21.7°C)

50% concentration

-29°F (-33.9°C)

The water system must contain a mixture of inhibited glycol and water with thermal protection sufficient for the coldest expected temperature for the installation. The inhibitor level can degrade over time, and may need to be adjusted periodically. The inhibitor is essential to prevent the glycol from accelerating corrosion of metal components in the system. The glycol and inhibitor levels must be checked regularly (no less than once annually).

! Material losses 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, every time the system is topped up, and during annual service.

D0000088521

14 qT<q T¼ê

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Note If water with a conductivity greater than 1000 S/cm is used, 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 and desalinating as well as for filling and flushing heating systems can be obtained from trade suppliers.
f Fill the heating system via the drain (see chapter “Specification / Dimensions and connections”).
f Add water to the system as needed to raise the pressure to 29 PSIG (verify that all system components are suitable for this pressure). Verify that the pressure remains constant for at least one hour. Locate and correct any leaks.
11.6.1 Venting the heating system f Before you fill the system, open the high point purge valve to
vent the air during filling. f Also open the purge valve on the heat pump.
1

11.8 Setting the flow rate on the heating side
! Material losses Never operate the system without a buffer tank so as to ensure proper flow rate for the heating system. The buffer tank ensures there is always enough thermal energy to defrost the evaporator when called for. If a buffer tank is not used, the condenser may freeze under defrost mode and lead to a complete loss of refrigerant. Repair costs for such a failure are not covered under the product warranty.
The setting must be made when only the heat pump is operating. In order to do this, first make the following changes: f Temporarily remove the fuse from the electric emergency/
booster heater to isolate the emergency/booster heater from the power supply. Alternatively, switch OFF the second heat source. f Operate the appliance in heating mode.
The flow rate is set automatically via the self-regulating system (see menu “COMMISSIONING / HEATING / SPREAD CONTROL / STANDBY PUMP RATE” in the heat pump manager).
In heat pump mode, a fixed temperature rise between the heat pump flow and return is set (see menu “COMMISSIONING / HEATING / SPREAD CONTROL” in the heat pump manager).
Checking the flow rate f Set parameter STANDBY PUMP RATE to 100%. f Set buffer operation to OFF. f The current flow rate can be called up in the menu “INFO /
INFO HEAT PUMP / PROCESS DATA” under “WP WATER FLOW RATE”. f Compare the value with the specification (see chapter “Specification / Data table”). f If the specified flow rate is not met, take suitable measures to increase the flow rate up to the minimum required value. f Reset the parameters to their original values

D000035306

1 Purge valve f Vent the pipework by activating the purge valve.

! Material losses A buffer tank with diffusion-proof insulation is essential to enable cooling by means of fan convectors.

11.7 Minimum flow rate
The minimum flow rate and the defrost energy must always be maintained (see chapter “Specification / Data table”).

Bêê Ïù Bêê |OE¼ OE¼OE Ï OEä¼ êOE¼ ê¼÷ ÑÄ

|OE¼

Ïϼ OE|÷ OEä¼ ¼ êêOE êOE|ùù|OEê |êÖ

êOE¼ ê¼÷ Ô êOE|ùù|OEê |êÖ Ä

WPL 15 A2W WPL 25 A2W

Ö ùä

Ö|ù ù

3.1 gpm (11.7 l/m) 4.2 gal (16 l)

4.4 gpm (16.7 l/m) 7.7 gal (29 l)

Tê| C¼ Ï êé Tê| C¼ Ï êé

Ïù |¼|

êOE

Ïù |¼|

êOE

ÏOE²

ÏOE

ÏOE²

ÏOE

226 ft2 (21 m2) 3 x 230

226 ft2 (21 m2) 2 x 230

301 ft2 (28 m2) 4 x 230

344 ft2 (32 m2) 3 x 230

Ïϼ OE|÷ |ù| ¼é iê¼®
WPL 15 A2W Yes WPL 25 A2W Yes
OEê¼¼ùé¼ùOEé|

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¼ Ï ä¼|OEêÖ OE¼

¼¼Ö¼OE¼

ä¼|OE¼

25 gal (94.6 l)

Yes

25 gal (94.6 l)

Yes

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f Install the open heating circuit(s) in the primary room (room where the external programming unit of the heat pump control unit is installed, such as in the living room). The individual room can then be controlled either with the external programming unit or indirectly by adjusting the heating curve or the room influence.
f Fully open the heating circuit(s) in the primary room. f Close all other heating circuits. f If an overflow valve has been installed in the heating system,
fully close this overflow valve in order to determine the minimum flow rate.
In combination with a hydraulic module, tank and hydraulic module or integral tank: f Under menu item “COMMISSIONING / HEATING” the param-
eter “HEATING CIRC PUMP RATE” (heating circuit pump rate) such that the minimum flow rate required for system operation is assured (see chapter “Specification / Data table”).
If the appliance is operated on its own with a WPM: f Set the heating circuit pump so that the minimum flow rate
required to operate the system is safeguarded.
The current flow rate can be called up in the menu “INFO / HEAT PUMP INFO / PROCESS DATA” under “WP WATER FLOW RATE”.
11.8.2 Minimum flow rate for systems with a buffer tank
When using a buffer tank, in menu “SETTINGS / HEATING / STANDARD SETTINGS”, set parameter “BUFFER OPERATION” to “ON”.
In combination with a hydraulic module, tank and hydraulic module or integral tank, and with spread control disabled: f In menu “COMMISSIONING / HEATING”, set parameter “HEAT-
ING CIRC PUMP RATE” so that the nominal flow rate required for system operation is assured (see chapter “Specification / Data table”).
If the appliance is operated on its own with a WPM: f Set the buffer charging pump so that the nominal flow rate
required for system operation is assured.
The current flow rate can be called up in the menu “INFO / HEAT PUMP INFO / PROCESS DATA” under “WP WATER FLOW RATE”.

11.9 Condensate drain
A condensate drain connector is factory-fitted to the defrost pan to enable the connection to a 1- (28.5 mm) ID condensate drain line.
1
1 Condensate drain f Observe chapter “Electrical connection / Ribbon heater”. f If the appliance is sited on a slab, the condensate drips freely
into the condensate drain pipe. f If the appliance is mounted on a bracket or T-support, attach
a condensate hose to the condensate drain. f Protect the condensate hose against frost with sufficient
thermal insulation.
! Material losses Ensure the condensate hose is not kinked.
f After routing the condensate hose, check that the condensate can drain correctly.
11.10 External second heat generator
For dual mode systems, always connect the heat pump into the return of the second heat generator (e.g. oil boiler).
11.11 High limit safety cut-out for space heating system

26_03_01_1868

! Material losses In order to prevent excessively high flow temperatures in the space heating system causing damage in the event of a fault, install a high limit safety cut-out on the circulator to limit the system temperature.

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12. Electrical connection
WARNING Electrocution f Before working on the appliance, isolate it from the
power supply at the main circuit breaker.

Note The leakage current of this appliance can be more than 3.5 mA.

The connection must only be made by a qualified contractor and in accordance with these instructions.

Note Please observe the instructions for the WPM heat pump manager.
The connection terminals are located in the terminal area of the appliance.
Follow the instructions in the chapter “Preparation / Preparing the electrical installation”. f For all connections, use appropriate cables in accordance
with National Electric Code (NEC).

1

2

1 Strain relief 2 Terminal area f Route cables and leads through the strain relief fittings.
If space behind the appliance is limited, the terminal area can pivot outward for easier access.

D0000035363

12.1 Access to the terminal area

D0000035380

f Undo the screw on the terminal area.

D0000035356

D0000035382

D0000035358

f Push the cover upwards. OEê¼¼ùé¼ùOEé|

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D0000075146 H L ,,+”
D0000037825

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f Pivot the terminal area to the side.

12.2 WPL 15/25 A2W Premium
f Connect the cables according to the following diagram.

X2
BUS

T

L1 L2 L1 L2 X5 / DHC
L1/L2/PE~240/60 C 32A

3,0 kW 3,2 kW 6,2 kW

L1 L2

PE

L1 L2 PE

L1 L2 L1 L2 PE

L1 L2 X3 / WP
L1/L2/PE~240/600 C 20A

– ON ERR L1 L2
X4 / Steuerung
L1/L2/PE~240/60 C 16A

f Fix the terminal area in place with the locking mechanism.
f Connect the electric emergency/booster heater if you want to utilize the following appliance functions:

ùê|¼ ÏOEê

ÏϼOE Ï OEä¼ ¼ù¼OEê ¼¼Ö¼OE¼ ä¼|OE¼

Mono energetic op- If the dual mode point is undershot, the electric emer-

eration

gency/booster heater safeguards both the heating oper-

ation and the provision of high DHW temperatures.

Emergency mode

If the heat pump shuts down due to a fault, the heating output is covered by the electric emergency/booster heater.

Heat-up program Where return temperatures are less than 77°F (25°C), (only for underfloor the electric emergency/booster heater must provide the heating systems) necessary heat for screed drying.
With such low system temperatures, the heat for screed drying must not be provided by the heat pump, otherwise the frost protection of the appliance can no longer be guaranteed during the defrost cycle. When the heat-up program has ended, the electric emergency/booster heater can be disconnected if it is not required for appliance operation. Please note that during the heat-up program, emergency mode is not available.

Disinfection mode

The electric emergency/booster heater starts automatically when disinfection mode is active. The DHW is then regularly heated to 140°F (60°C) to protect it against the growth of legionella bacteria.

1

1 Ground terminal for screening the low voltage lead

X2

Z|ϼOE ¼OE| ù ùOE|Ö¼
eZ

BUS High H

BUS Low L

BUS earth

BUS “+” (is not connected)

X3

¼ ê¼OE¼

L1, L2, GND

X4

OEù ùOE|Ö¼

–

ON

ERR

Power supply: L1, L2, GND

X5

ù¼OEê ¼¼Ö¼OE¼ ä¼|OE¼ C+x

L1, L2, GND ¼OE¼® ù|®

`¼ê|ù |êÖ¼OE

3.0 kW

L1 L2

GND

3.2 kW

L1 L2 GND

6.2 kW

L1 L2 L1 L2 GND

f Ground the LV lead by inverting the braided shield over the cable sheath and clamping it under the ground terminal.
f Then check that the strain relief fittings are working as intended.

12.3 Closing the terminal area 1

2

D0000035356

18 qT<q T¼ê

1 Serrated washer 2 Screw

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f Secure the cover with the screw and serrated washer. f Connect the following components to the heat pump manag-
er in accordance with the technical guides:
– Circulation pump for the heat consumer side
– Outside temperature sensor
– Return sensor (only for operation with buffer tank)

12.4 Ribbon heater
A ribbon heater (see chapter “Installation / Appliance description / Accessories / Further accessories”) can be fitted to the condensate pan and the condensate hose. f Install a ribbon heater when mounting on the wall bracket or
T-support.
When installing on a concrete slab or the mounting bracket, we recommend installing a ribbon heater if the routing of the condensate hose means it is at risk of frost or is fully exposed to the elements.

f Guide the ribbon heater into the condensate drain pipe.
B.

Access to the ribbon heater terminal area

D0000033168

D0000035976

26_03_01_1544

f Remove the cover.
A.

f Make the electrical connection for the ribbon heater.
ù¼OEê|ù ¼OEê Ï ê ä¼|OE¼ Power supply: L1, L2, GND
1

D0000035975

1 Electrical connection for ribbon heater f Guide the ribbon heater through the appliance.
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Closing the terminal area

13.1.2 Temperature sensors – Have you correctly positioned and connected the outside
temperature sensor and the return temperature sensor (in connection with a buffer tank)? 13.1.3 High limit safety cut-out At ambient temperatures below +5°F (-15°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.
1

26_03_01_1867

2660033001_1_1818080

f Position the cover on the appliance. f Secure the cover with the four screws.

Commissioning

If the heat pump is installed without a HSBC system tank, a WPM heat pump manager is required to operate the appliance. All necessary adjustments prior to and during operation are made on this device.
Only qualified contractors may make the settings in the heat pump manager commissioning report, commission the appliance and instruct the owner in its use.
If an HSBC system tank is installed, the WPM heat pump controller is integrated into the HSBC system, and the parameters are preset for a quick start. If the installation is carried out without an HSBC tank, a WPM controller needs to be installed. The WPM controller is delivered with an SD card for initial parameter settings.
Carry out commissioning in accordance with these operating and installation instructions, and the instructions for the heat pump manager. Our customer support can assist with commissioning.
Where this appliance is intended for commercial use, the rules of the relevant Operational Safety Ordinance must be observed at commissioning. For further details, check with your local authorizing body.
13.1 Checks before commissioning
Before commissioning, check the following:
13.1.1 Heating system – Have you filled the heating system to the correct pressure
and opened the quick-action air vent valve? – Is the flow rate on the heating side more than the minimum
required flow rate?

1 Electric emergency/booster heater f Remove the cause of the fault.
f Reset the high limit safety cut-out by pressing the reset button.
13.1.4 Power supply – Have you correctly connected the power supply?
13.2 Using the appliance with an external second heat generator
The appliance is factory set for compressor operation with an electric emergency/booster heater. If the appliance is operated in dual mode with an external second heat generator, set the DIP switch to compressor mode with an external second heat generator (see chapter “Troubleshooting / Checking the IWS DIP switch settings”).

D0000035383

20 qT<q T¼ê

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13.3 Initial start-up

13.3.1 Heating curve adjustment
The efficiency of a heat pump decreases as the flow temperature rises. The heating curve should therefore be adjusted with care. Heating curves that are set too high cause the zone valves or thermostatic valves to close, which may lead to the minimum flow rate required for the heating circuit not being achieved. fObserve the instructions for the WPM.
The following steps will help you to adjust the heating curve correctly:
– Fully open thermostatic or zone valves in the primary room (e.g. living room and bathroom). We do not recommend installing thermostatic or zone valves in the primary room. Control the temperature for these rooms via a remote control.
– At different outside temperatures, e.g. 14°F and 50°F (­10°C and +10°C), adjust the heating curve so that the required temperature is set in the primary room.
Standard values to begin with:

T||¼OE¼
Heating curve Control response time Comfort temperature

e®¼Ïùä¼|OEêÖ V|®ê|OEä¼|OEêÖ

OE¼

OE¼

0.4

0.8

25

50

70°F (21°C)

73°F (23°C)

If the room temperature is too low in spring and autumn (approx. 50°F (10°C) outside temperature), go to heat pump manager menu SETTINGS / HEATING / HEATING CIRCUIT and raise the parameter COMFORT TEMPERATURE”.

Note If no FET remote control is installed, raising the “COMFORT TEMPERATURE” parameter will lead to a parallel offset of the heating curve.

If the room temperature is too low at low outside temperatures, increase parameter “HEATING CURVE”.
If the “HEATING CURVE” parameter has been raised and outside temperatures remain relatively high, adjust the zone valve or thermostatic valve in the primary room to the required temperature.
! Material losses Never reduce the temperature in the entire building by closing all zone or thermostatic valves; instead use the setback programs.

When everything has been implemented correctly, the system can be heated to its maximum operating temperature and vented once again.
! Material losses For underfloor heating systems, observe the maximum permissible system temperature for that particular underfloor heating.

13.3.2 Other settings fFor operation with or without a buffer tank, observe the
information in the instructions for the WPM and parameter BUFFER OPERATION in menu SETTINGS / STANDARD SETTING.
Using the heat-up program
If you use the heat-up program, make the following settings on the WPM: fInitially set the “DUAL MODE TEMP HZG” parameter to 86°F
(30°C). fThen set the “LOWER APP LIMIT HZG” parameter to 86°F
(30°C).
Note After completing the heat-up process, reset the “DUAL MODE TEMP HZG” and “LOWER APP LIMIT HZG” parameters to their respective standard values or to the respective system values.
13.4 Appliance handover
Explain the appliance function to users and familiarize them with its operation.
Note Hand over these operating and installation instructions to users for safekeeping. All information in these instructions must be closely observed. The instructions provide information on safety, operation, installation and maintenance of the appliance.

Settings

14.1 Silent mode
SILENT MODE is an operating mode for air source heat pumps with reduced sound level. fSee the data table (see chapter “Specification / Data table”)
for the sound power level when silent mode is deactivated.
You can reduce the fan speed and compressor output for a certain time in the “COMMISSIONING / SILENT MODE / OUTPUT REDUCTION” menu.
Note If you activate SILENT MODE, the maximum output is reduced to 70% as standard. This value can be increased further or reduced to the specified minimum value as required.
Note When silent mode is active, operating costs will be higher. In silent mode 2, heating and DHW heating are provided solely via the emergency/booster heater.

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f See the table for the maximum appliance sound levels according to the settings made in the “COMMISSIONING / SILENT MODE / OUTPUT REDUCTION / OUTPUT” menu.

WPL 15 A2W Premium WPL 25 A2W Premium

qTB OEOE ¼OEêOEê ¼OEOEêÖ

Z® ¼ ù¼¼ù B|ê |ù¼ ®¼ OE OEOE ¼OEêOEê

+¼|OEêÖ OEOE B|ê |OE <q`Ñ

70%

52 dB(A) 16.4 kBtu/h

63%

50 dB(A) 14.67 kBtu/h

70%

57 dB(A) 30.71 kBtu/h

61%

54 dB(A) 26.78 kBtu/h

f In the “PROGRAMS / SILENT PROGRAM 1” menu, set the times when the heat pump should switch to a quieter operating mode.

 Appliance shutdown

! Material losses Never interrupt the heat pump power supply, even outside of the heating season. Otherwise, system frost protection is not guaranteed. The heat pump manager automatically switches the heat pump to summer or winter mode. It is necessary to allow the power supply to be disconnected after installation. An appropriate external switch that disconnects the WPL from the power grid should be installed, located in close proximity to the WPL unit.

Check the condensate drain (visual inspection). Remove any contaminants and blockages immediately.
1. 2.
1
1 Inspection port
! Material losses Keep the air discharge and intake apertures free from snow and ice. Remove any leaves or other foreign bodies from the evaporator fins periodically.
17. Troubleshooting

D0000037831

15.1 Standby mode
To shut the system down, simply set the heat pump manager to “Standby mode”. This way, the safety functions that protect the system remain enabled, e.g. frost protection.
15.2 Power interruption
If the system is to be isolated from the power supply permanently, please observe the following:
! Material losses If the heat pump is completely switched off and there is a risk of frost, drain the system on the water side.

WARNING Electrocution f Before working on the appliance, isolate it from the
power supply at the control panel. Following disconnection from the power supply, parts of the appliance may remain energized for 2 minutes until the inverter capacitors have discharged. Make sure that nobody can activate the power supply during service.
Note Please observe the instructions for the heat pump manager.
If the fault cannot be located during a service using the heat pump manager, open the control panel in emergencies and check the IWS settings.

Maintenance

WARNING Electrocution f Prior to commencing any service or cleaning work,
isolate the appliance across all poles from the power supply. Following disconnection from the power supply, parts of the appliance may remain energized for 2 minutes until the inverter capacitors have discharged.

We recommend a regular inspection (to establish the current condition of the system), and maintenance if required (to return the system to its original condition).

22 qT<q T¼ê

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17.1 Checking the IWS DIP switch settings

IWS

Carry out the following steps to make the IWS accessible.

1

BA

2

26_03_01_1866

f Remove the cover.
f Remove the bracket highlighted in grey.
1
1 IWS f Lift the control panel. f Turn the control panel around. OEê¼¼ùé¼ùOEé|

D0000075152

26_03_01_1869

BA

26_03_01_0921

4

3

1 LEDs 2 DIP switch (WP-Typ) 3 Reset button 4 DIP switch (BA)

DIP switch (WP-Typ)
The DIP switch (WP-Typ) on the IWS serves to set the relevant heat pump type.

Factory setting Compressor mode with electric emergency/booster heater

WP – Typ
ON

D0000057054

1234
f Check whether the DIP switch is set correctly. Compressor mode with an external second heat generator
! Material losses In this case, do not connect the electric emergency/booster heater.
If the appliance is operated in dual mode operation with an external second heat generator or in a group with additional heat pumps, set the DIP switch as shown.
WP – Typ
ON

D0000057055

1234
qT<q T¼ê 23

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DIP switch (BA) fCheck whether the DIP switch (BA) is set correctly. Heating mode only
BA
ON
1234
Heating and cooling mode
BA
ON
1234
17.1.1 Closing the terminal area
fPosition the cover on the appliance. fSecure the cover with the four screws.

26_03_01_1867

D0000051579

D0000057052

17.2 Light emitting diodes (LEDs)

1

BA

BA

26_03_01_0921

2

1 LEDs 2 Reset button
The following table shows the meaning of the LEDs on the IWS.

<ê®ê|OE Red LED flashes Red LED illuminates
Green LED (center) flashes Green LED (center) illuminates

B¼|êÖ
Single fault. The appliance is shut down and restarts after 10 minutes. The LED extinguishes. More than 5 faults within a 2 hour span. The appliance is shut down permanently and only restarts following a reset on the IWS. This also resets the internal fault counter. The appliance can be restarted after 10 minutes. The LED extinguishes. The heat pump is initializing.
The heat pump was initialized successfully and the connection with the WPM is active.

Faults indicated by the red LED: – High pressure fault – Low pressure fault – Central fault – Hardware fault on the IWS (see fault list or message list for
the WPM heat pump manager)

17.3 Reset button
If the IWS was not initialized successfully, you can reset the settings with this button. fFor this, also observe chapter “Reinitializing the IWS” in the
heat pump manager instructions.

17.4 Resetting the high limit safety cut-out
The electric emergency/booster heater stops if the heating water temperature exceeds 185°F (85°C), for example if the flow rate is too low.

24 qT<qT¼ê

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1
1 Electric emergency/booster heater f Remove the cause of the fault.

2660033001_1_1818080

f At outside temperatures above 34°F (+1°C), shut down the appliance or switch it over to emergency mode for approx. 1 hour. After this, the ice should have melted.
f Check that the appliance is installed in line with the installation requirements.
f If noise occurs frequently, activate defrost manually. Observe the information in the WPM instructions and parameter “POWERDEFROST” in menu “COMMISSIONING / COMPRESSOR”.
f If noise persists, notify the customer service department.

D0000035383

f Reset the high limit safety cut-out by pressing the reset button.
f Check whether the heating water is being circulated at a sufficiently high flow rate.
17.5 Fan noise
The heat pump draws heat from the outdoor air. This causes the outdoor air to cool down. At outside temperatures of 32­46°F (0­8°C), the air may be cooled to below freezing point. If, under these conditions, precipitation occurs in the form of rain or fog, ice may form on the air grill, the fan blades or the air routing pipes. If the fan comes into contact with this ice, this creates noise.
How to remedy rhythmic scratching or grinding noises: f Check whether the condensate drain is clear of obstructions. f Check whether the design output and temperature are set
correctly. Ice formation is particularly pronounced when a high heating output is demanded at moderate outside temperatures. f Carry out a manual defrost, as many times as necessary, until the fan runs freely again. Observe the information in the WPM instructions and parameter “START DEFROST” in menu “COMMISSIONING / COMPRESSOR”.
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Specification

18.1 Dimensions and connections
18.1.1 WPL 15 A2W Premium
d45
16 410

4 100 2 ô 70
19 ó 490

45 1160
50 1270

23 593

g01

g02

35 900 6 157

e01 Heating flow
e02 Heating return
d45 Condensate drain d47 Drain g01 Air intake g02 Air discharge

Type of connection Diameter Type of connection Diameter Diameter

qT<ÑqT¼ê Push-fit connection 11/8 (28 mm) – (adapter for 1 copper pipe) Push- fit connection 11/8 (28 mm) – (adapter for 1 copper pipe) 13/16 (29.6 mm)

d47
6 176 4 100
e02 e01

3 ó 82

D0000034131

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4

100

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18.1.2 WPL 25 A2W Premium
d45 16 410
54 1380
58 1490

19 ó 490

23 593

g01

g02

1045

41

6 157

e01 Heating flow
e02 Heating return
d45 Condensate drain d47 Drain g01 Air intake g02 Air discharge

Type of connection Diameter Type of connection Diameter Diameter

qT<ÑqT¼ê Push-fit connection 11/8 (28 mm) – (adapter for 1 copper pipe) Push- fit connection 11/8 (28 mm) – (adapter for 1 copper pipe) 13/16 (29.6 mm)

d47
6 176 4 100 e02 e01

3 ó 82

D0000028296

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18.2 Wiring diagram
WPL 15 A2W Premium | WPL 25 A2W Premium (single phase)

L1 L2 L1 L2

F5

12 22 32

T >

11 21 31

L1 L2

X23

Z3
2 4
K2
1 3

X27/1
F4
bl sw

X27/3

L1 L2 IN IN

S1

A4

1

L1 L2

OUT OUT

2
2 Turns

L N

H1 H2

M6 X8

ON ERR L1 L2

X23 K5

B

A

K6

B

A

1 2 3
X27/4 X27/8 X27/3

X27/2

6 5 4 3 2 1 X1
K2 A2 A1
F3

p

X29

1 NL2 (N)

2 LL1 (L)

3 KK22

4 BByyppaassss

5 EERRRR

6 RRoibhbrboenghleiattheerizung

7 ADbetfarousetn

8 OONN

9 HHDP-switch

10 EVU

11 nc

12 nc
X38 1 DBoHoCs1ter 1

A2

2 DBoHoCs2ter 2

3 ÖOlislusmumppfhheeizautnegr

1 K6
31 K5
3
E1
P3=3200W P2=3000W P1=2600W

NTC Sensor A3

HD A1 A2

RS 485 U VW

X27

2 Turns

T B14

U V W M 3~
M1

N L L’ Y2

X43

1
GND
2
+5V
3
H Modbus 4 L Modbus

X40

1 GND

2 Frequeennzceyining.00….5V

X46

3 +5V 20 mA

4 nc

5 nc

6 +12..+18V

sw bl br

V1

Y1

E2

A2 Integral heat pump control unit (IWS) A3 Inverter, compressor A4 Filter assembly E1 Emergency/booster heater NHZ E2 Oil sump heater F3 High pressure switch 42 bar F4 Fuse 10 A (fan) F5 High limit safety cut-out for NHZ K2 Compressor start contactor L K5 NHZ relay K6 NHZ relay

M1 Compressor motor S1 Sine filter coil V1 Flow rate sensor X1 Internal distribution terminal X3 External power supply terminal X4 External control unit terminal X5 External NHZ terminal X7 Ribbon heater terminal X8 2-pole terminal X23 Ground power supply X27 Ground stud

X29 IWS plug 12-pin ­ control unit X38 IWS plug 3-pin ­ oil sump X40 IWS plug 6-pin ­ HT special X43 IWS plug 3-pin ­ Modbus X46 Plug-in connector Y1 Diverter valve, defrost Y2 Bypass diverter valve Z3 Interference suppression filter

D0000074079-d

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T

H L

“+”

X36

LüfteFranDrRePhMz. 4 LüFfatner++1100VV 3
LüFftaenr 00…..1100VV 2 LüFftaenr GGNNDD 1

X35

HeHizeuantginsgrürcektluarunf 6 OAutudßoeonrluaifrt 5
CoVmerpdricehsstoereininttarkitet 4 EvVaperodramtopr fdeisracuhsatrrgitet 3
GND 2
EinsIpnrjeitcztuionng 1

X30

CAN GND 3 CAN L 2 CAN H 1

A2
(IWS III)

X34
HeizHuenagtisnvgofrloawuf 7 +12……++1188VV 6 GGNNDD 5
NLDP 4….2200mmAA 4 HDP 4….2200mmAA 3 MDP 4….2200mmAA 2
Heoitßggaass 1

X33

+12V 5 Phase 1 4 Phase 2 3 Phase 3 2
Phase 4 1

X37

+12V 5 Phase 1 4 Phase 2 3 Phase 3 2
Phase 4 1

X41
X41 1 2 X9 X6 1 2 3 4

X8 / F4

FFrroossttscphruottzection VCeorflnüdsesingseorraudisstrcithtarge FEoxrthlaufutst air ÖOlislusumpmftpetempmerp.atur nncc 00–55VVEiinngang GGNNDD
D0000074079-d

X39 1 2 3 4 5 6 7 X42

T

T

T

T

B11 B9 B12 B13

M

M

321

321

321

ML 1~ N

T B5

M8

M7

p

p

p

T

T

T

T

T

T

P4

P1

P3

B1

B10 B8

B7

B6

B2

M6

A2 Integral heat pump control unit (IWS) B1 Heating flow temperature sensor – KTY B2 Heating return temperature sensor – KTY B5 Hot gas temperature sensor – PT1000 B6 Outdoor air temperature sensor – PT1000 B7 Compressor intake temperature sensor –
PT1000 B8 Evaporator discharge temperature sensor –
PT1000 B9 Frost protection temperature sensor –
KTY B10 Injection temperature sensor – PT1000

B11 Exhaust air temperature sensor – KTY B12 Condenser discharge temperature
sensor – KTY B13 Oil sump temperature sensor – KTY M6 Fan motor M7 Electrical expansion valve stepper motor M8 Electrical injection valve stepper motor P1 High pressure sensor (42 bar) P3 Low pressure sensor (16 bar) P4 Mean pressure sensor (30 bar) X2 External bus terminal

X6 4-pole terminal X30 IWS plug 3-pin – BUS X33 IWS plug 5-pin – electrical expansion
valve X34 IWS plug 7-pin – sensors X35 IWS plug 6-pin ­ temperature sensors X36 IWS plug 3-pin – fan X37 IWS plug 5-pin – electrical injection valve X39 IWS plug 7-pin – temperature X41 Link PCB ground X42 Link PCB ground

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18.3 Application limit
18.3.1 Heating field of operation
18.3.2 Cooling field of operation

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18.4 Output diagrams, WPL 15 A2W Premium
18.4.1 Heating capacity

dh

18.4.2 COP at full heating load

Z

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18.4.3 COP at minimum heating load

18.4.4 Cooling capacity at 47°F leaving water temperature

ZZdZ

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EER

18.4.5 Cooling EER at 47°F leaving water temperature

8 7 6 5 4 3 2 1 0
50 55 60 65 70 75 80 85 90
Ambient ir emperature (°F)

Max. apacity

Min. apacity

95 100

18.4.6 Cooling power consumption at 47°F leaving water temperature

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18.5 Output diagrams, WPL 25 A2W Premium
18.5.1 Heating capacity

18.5.2 COP at full heating load

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18.5.3 COP at minimum heating load

18.5.4 Cooling capacity at 47°F leaving water temperature

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18.5.5 Cooling EER at 47°F leaving water temperature

18.5.6 Cooling power consumption at 47°F leaving water temperature

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18.6 Data table
The performance data apply for new appliances with no fouling (dirt) on the heat exchanger. The power consumption data are maximum values and may vary due to the operation condition, auxiliary consumption for components like circulation pump are included. The performance data are based on 100% water for heat transfer. The usage of polypropylene glycol with a minimum concentration of 30% is strongly recommended. Depending on the glycol concentration the performance values may vary.

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Heating output Full load capacity A47/LWT 105 (min/max) A17/LWT 105 (min/max) A 5/LWT 110 (min/max) A-4/LWT 149 (min/max) Cooling output Full load capacity Full load efficiency A95/LWT 44 (min/max) A80/LWT 44 (min/max) Power consumption, heating A47/LWT 105 (min/max) A17/LWT 105 (min/max) A 5/LWT 110 (min/max) A-4/LWT 149 (min/max) Power consumption, emergency/booster heater Power consumption, cooling A95/LWT 44 (min/max) A80/LWT 44 (min/max) COP heating (maxmimum capacity) A47/LWT 105 A17/LWT 105 A 5/LWT 110 A-4/LWT 149 IPLV cooling* IPLV IPLV kW/ton Sound power level Outdoor installation, max capacity Outdoor installation, silent mode Application limits Min. application limit, heat source Max. application limit, heat source Min. application limit on the heating side Max. application limit on the heating side Application limit, heat source at W65 Min. cooling mode application limit for outside temperature Max. cooling mode application limit for outside temperature LWT min in cooling mode Water hardness Conductivity (softening water) Conductivity (desalination) Chloride Oxygen 8-12 weeks after filling (softening) Oxygen 8-12 weeks after filling (desalination)

203252
23.04 kBtu/hr 11.26 kBtu/hr / 22.86 kBtu/hr 8.19 kBtu/hr / 22.86 kBtu/hr 7.51 kBtu/hr / 21.38 kBtu/hr 15.28 kBtu/hr / 18.80 kBtu/hr
2.13 ton 1.65 kW/ton 0.47 ton / 2.13 ton 0.5 ton / 2.38 ton
0.87 kW / 1.73 kW 0.92 kW / 2.29 kW 1.07 kW / 2.50 kW 2.97 kW / 3.65 kW 6.75 kW @ 240 V
0.71 kW / 3.52 kW 0.65 kW / 2.71 kW
3.86 2.93 2.51 1.51
15.68 0.76
61 dB(A) 50 dB(A)
-4 °F (-20 °C) 104 °F (40 °C) 59 °F (15 °C) 149 °F (65 °C) -4 °F (-20 °C) 59 °F (15 °C) 104 °F (40 °C) 44.6 °F (7 °C) 143­152 ppm <1000 S/cm 20-100 S/cm <30 mg/l < 0.02 mg/l < 0.1 mg/l

203253
50.4 kBtu/hr 26.95 kBtu/hr / 41.18 kBtu/hr 20.13 kBtu/hr / 43.16 kBtu/hr 17.63 kBtu/hr / 45.34 kBtu/hr 29.37 kBtu/hr / 36.17 kBtu/hr
4.09 ton 1.51 kW/ton 1.76 ton / 4.1 ton 1.94 ton / 4.51 ton
1.76 kW / 2.85 kW 1.79 kW / 3.92 kW 1.83 kW / 4.80 kW 5.25 kW / 7.53 kW 6.75 kW @ 240 V
2.08 kW / 6.21 kW 1.98 kW / 4.96 kW
4.24 3.22 2.77 1.79
16.83 0.71
66 dB(A) 54 dB(A)
-4 °F (-20 °C) 104 °F (40 °C) 59 °F (15 °C) 149 °F (65 °C) -4 °F (-20 °C) 59 °F (15 °C) 104 °F (40 °C) 44.6 °F (7 °C) 143­152 ppm <1000 S/cm 20-100 S/cm <30 mg/l < 0.02 mg/l < 0.1 mg/l

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Electrical data Rated voltage Breaker size, compressor (DP) Breaker size, controller (DP) Breaker size, backup element (DP) Starting current Locked rotor current Max operating current Refrigerant data Type Charge IP rating Condenser material Evaporator material Dimensions Height Width Depth Weight Connection size tube expanded to 29.1 mm diam. Miscellaneous Min heating flow rate at A45 LWT 95 and 9°F (5°C) rise Max operating pressure, heating circuit Circulation rate, heat source side Internal pressure difference Propylene glycol multiplier factor Capacity multiplier, 30% concentration Capacity multiplier, 50% concentration Pressure drop multiplier, 30% concentration Pressure drop multiplier, 50% concentration Installation location Maximum altitude for installation Minimum distance to salt water body

220­240 V 20 A 15 A 30 A 7 A 35 A 19.5 A
R410A 9.26 lb (4.2 kg) IP 14B 1.4401 Cu Aluminum/copper
35 (900 mm) 50 (1270 mm) 23 (593 mm) 309 lb (140 kg) 1 (28 mm)
3.1 gpm (11.7 l/min) 43.5 psi (0.3 MPa) 1354 cfm (2300 m3/hr) 0.87 psi (60 hPa)
0.96 0.88 1.22 1.55
6,562 ft (2000 m) (535 m)

• According to AHRI Standard 550/590 Energy Star performance test
  [A45: Ambient air temperature = 45°F (7.2°C)] [LWT35: Leaving water temperature = 35°F (1.7°C)]

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220­240 V 35 A 15 A 30 A 10 A 17 A 30 A
R410A 12.13 lb (5.5 kg) IP 14B 1.4401 Cu Aluminum/copper
411/8 (1045 mm) 5811/16 (1490 mm) 23 (593 mm) 386 lb (175 kg) 1 (28 mm)
4.4 gpm (16.7 l/min) 43.5 psi (0.3 MPa) 2354 cfm (4000 m3/hr) 1.6 psi (110 hPa)
0.96 0.88 1.22 1.55
6,562 ft (2000 m) (535 m)

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WARRANTY

| ENVIRONMENT AND RECYCLING

19. Warranty

LIMITED WARRANTY

Subject to the terms and conditions set forth in this limited warranty, Stiebel Eltron, Inc. (the “Manufacturer”) hereby warrants to the original purchaser (the “Owner”) that each WPA2W Premium (the “Product”) shall notUPX[due to defects in the Manufacturer’s materials or workmanshipX]ATbXST]cXP[ P_[XRPcX^]bSTUX]TSPbbX]V[TUPX[hSfT[[X]Vb^aSd[TgTb*U^a _Tab^]P[dbTQh^RRd_P]cb^UPS^XRX[TU^aP_TaX^S^U)
&hTPabR^_aTbb^a
!hTPab0[[^cWTaPacb
As Owner’s sole and exclusive remedy for breach of the above warranty, Manufacturer shall, at the Manufacturer’s discretion, send replacement parts for local repair or replace the defective ?a^SdRc with a replacement unit with comparable operating features. Manufacturer’s maximum liability under all circumstances shall be limited to the Owner’s purchase price foa cWT?a^SdRc0[[aT[PRTT]cR^_aTbb^ab^a_PacbbWP[[QT fPaaP]cTSU^acWTaTPX]STa^UcWT^aXVX]P[fPaaP]ch_TaX^S

5ailure to maintain the ?a^SdRc or to operate the ?a^SdRcin

accordance with the Manufacturer’s specifications;
$ 8mproper installation ^UcWT?a^SdRcand/or improper materials
usedby anyinstaller and not relating to defects in parts or workmanship ofManufacturer;
% <oving the ?a^SdRc from its original place of installation; & 3PPVTc^cWT?a^SdRcQhPRcb^U6^SP]SRXaRdbcP]RTb^eTa
fWXRW<P]dUPRcdaTaWPb]^R^]ca^[X]R[dSX]VeP]SP[Xb
‘ 2^]]TRcX]VcWT?a^SdRcc^P]hX]R^_PcXQ[TcWXaSPach
R^^]T]c^abhbcT
( 8]bcP[[X]VcWT?a^SdRcX]P]T]eXa^]T]cfWTaTXcfX[[QT
Tg_^bTSc^R^aa^bXeTP]SRPdbcXRbdQbcP]RTb
8]bcP[[X]VcWT?a^SdRc[TbbcWP] “^UPX[TUa^P]h
fPcTaQ^ShR^]cPX]X]VbP[cbdRWPbbTPfPcTa
CWT?a^SdRcdbcQTRWPaVTSfXcWV[hR^[c^aTeT]cUa^bc
SPPVTSdaX]VP^fTa^dcPVT
! 0]hSPPVTc^cWT?a^SdRcRPdbTSQhfX[S[XUT^aX]bTRcbbdRW
Pb_WhbXRP[STbcadRcX^]]TbcX]V^aX]UTbcPcX^]b
” <^d]cX]VcWT?a^SdRc]^cX]PRR^aSP]RTfXcWcWTP]dP[

This limited warranty shall be the exclusive warranty made by the Manufacturer and is made in lieu of all other warranties, express or implied, whether written or oral, including, but not limited to warranties of merchantability and fitness for a particular purpose. Manufacturer shall not be liable for incidental, consequential or contingent damages or expenses arising directly or indirectly from any defect in the ?a^SdRc or the use of the?a^SdRc. Manufacturer alone is authorized to make all warranties on Manufacturer’s behalf and no statement, warranty or guarantee made by any other party shall be binding on Manufacturer.
FPaaP]chR^eTaPVTTgR[dbX^]b)
0[[[PQ^aR^bcbU^aSXPV]^bcXRbaTPXaaT[PRTT]c^UP UPX[TSR^aTbb^aaT[PRTT]c^U_PacbP]SaT^eP[^U cWT_a^SdRcU^aP]haTPb^]
! CWT_a^SdRcdbcQTX]bcP[[TSQhP[XRT]bTS7E02 2^]caPRc^a
” 8nstallation of the ?a^SdRc other than as directed by Manufacturer and other than in accordance withP[[ applicable [^RP[P]SbcPcTbuilding codes;

Should owner wish to return the?a^SdRc to manufacturer for replacement under this warranty, Owner must first secure written authorization from Manufacturer. Owner shall demonstrate proof of purchase, including a purchase date, and shall be responsible for all removal and transportation costs. If Owner cannot demonstrate a purchase date this warranty shall be limited to the period beginning from the date of manufacture stamped on the?a^SdRc. Manufacturer reserves the right to deny warranty coverage upon Manufacturer’s examination of ?a^SdRc. This warranty is restricted to the Owner and cannot be assigned.0]hSTUTRcXeTR^_aTbb^a^aPacaT[PRTSd]STacWXb fPaaP]chbWP[[QTR^TcWT_a^_Tach^U<P]dUPRcdaTaP]S aTcda]TSU^aX]b_TRcX^] Some States and Provinces do not allow the exclusion or limitation of certain warranties. In such cases, the limitations set forth herein may not apply to the Owner. In such cases this warranty shall be limited to the shortest period and lowest damage amounts allowed by law. This warranty gives you specific legal rights and you may also have other rights which vary from State to State or Province to Province.

This Warranty is valid for U.S.A. & Canada only. Warranties may vary by country. Please consult your local Stiebel Eltron Representative for the Warranty for your country.
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United States of America STIEBEL ELTRON, Inc.
17 West Street | West Hatfield, MA 01088 Tel. 413.247.3380 | Fax 413.247.3369 Toll-free 800.582.8423 info@stiebel-eltron-usa.com www.stiebel-eltron-usa.com

Austria STIEBEL ELTRON Ges.m.b.H. Eferdinger Str. 73 | 4600 Wels Tel. 07242 47367-0 | Fax 07242 47367-42 info@stiebel-eltron.at www.stiebel-eltron.at
Belgium STIEBEL ELTRON bvba/sprl ‘t Hofveld 6 – D1 | 1702 Groot-Bijgaarden Tel. 02 42322-22 | Fax 02 42322-12 info@stiebel-eltron.be www.stiebel- eltron.be
Czech Republic STIEBEL ELTRON spol. s r.o. K Hájm 946 | 155 00 Praha 5 – Stodlky Tel. 251116-111 | Fax 235512-122 info@stiebel-eltron.cz www.stiebel- eltron.cz
Denmark Pettinaroli A/S Mandal Allé 21 | 5500 Middelfart Tel. 06341 666-6 | Fax 06341 666-0 info@pettinaroli.dk www.stiebel-eltron.dk
Finland Insinööritoimisto Olli Andersson Oy Kapinakuja 1 | 04600 Mäntsälä Tel. 020 720-9988 | Fax 020 720-9989 info@stiebel-eltron.fi www.stiebel-eltron.fi
5aP]RT BC8414;4;CA>=B0B &(adTSTbBT[[XTab 1?’$ &k$&&”<Tci2ÐSTg”CT[“‘& &#””’k5Pg”‘&&#%’!% X]U^/bcXTQT[T[ca^]Ua fffbcXTQT[T[ca^]Ua

6TaP]h BC8414;4;CA>=6Q72^:6 3aBcXTQT[BcaPÆTk”&%”7^[iX]ST] CT[$$” &!k5Pg$$” &!#’ X]U^/bcXTQT[T[ca^]ST fffbcXTQT[T[ca^]ST
Hungary STIEBEL ELTRON Kft. Pacsirtamez u. 41 | 1036 Budapest Tel. 01 250-6055 | Fax 01 368-8097 info@stiebel-eltron.hu www.stiebel-eltron.hu
Japan NIHON STIEBEL Co. Ltd. Ebara building 3F 2-9-3 Hamamatsu-cho Minato-Ku | 105-0013 Tokyo Tel. 03 34364662 | Fax 03 34594365 info@nihonstiebel.co.jp www.nihonstiebel.co.jp
Netherlands STIEBEL ELTRON Nederland B.V. Daviottenweg 36 5222 BH ‘s-Hertogenbosch Tel. 073 623-0000 | Fax 073 623-1141 stiebel@stiebel- eltron.nl www.stiebel-eltron.nl
Poland STIEBEL ELTRON Polska Sp. z o.o. ul. Instalatorów 9 | 02-237 Warszawa Tel. 022 60920-30 | Fax 022 60920-29 stiebel@stiebel-eltron.com.pl www .stiebel-eltron.com.pl
Russia STIEBEL ELTRON LLC RUSSIA Urzhumskaya street 4, building 2 | 129343 Moscow Tel. 0495 7753889 | Fax 0495 7753887 info@stiebel-eltron.ru www .stiebel-eltron.ru

Slovakia BC8414;4;CA>=B[^ePZXPba^ Hlavná 1 | 058 01 Poprad Tel. 052 7127-125 | Fax 052 7127-148 info@stiebel-eltron.sk www.stiebel-eltron.sk
Sweden STENERGY Vasagatan 14 | 545 30 Töreboda Sales: Tel. 0506 105-10 | info @stiebel-eltron.se Technique & Service: Tel. 0150 54200 | info@heatech.se www .stiebel-eltron.se
Switzerland STIEBEL ELTRON AG Netzibodenstr. 23 c | 4133 Pratteln Tel. 061 81693-33 | Fax 061 81693-44 info@stiebel-eltron.ch 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 info@stiebeleltronasia.com www.stiebeleltronasia.com
United Kingdom and Ireland STIEBEL ELTRON UK Ltd. Unit 12 Stadium Court Stadium Road | CH62 3RP Bromborough Tel. 0151 346-2300 | Fax 0151 334-2913 info@stiebel-eltron.co.uk www.stiebel-eltron.co.uk

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! | Rätt till misstag och tekniska ändringar förbehålls! | Excepto erro ou alteração técnica | Zastrzeone zmiany techniczne i ewentualne bldy | Omyly a technické zmny jsou vyhrazeny! | A muszaki változtatások és tévedések jogát fenntartjuk! | . . | Chyby a technické zmeny sú vyhradené! Stand 8643

A 350585-45684-9870

References

• ELTRON • IT-oplossingen op maat. Gespecialiseerd in facturatiesoftware
• This domain has been registered for a customer by nicsell
• ELTRON
• eltron.cz
• The domain name eltron.nl is available for rent
• eltron.ru
• Tankless Water Heater | Renewable Energy | Stiebel Eltron USA
• STIEBEL ELTRON | Technik zum Wohlfühlen
• Warmtepompen - warmwater - verwarming - ventilatie | STIEBEL ELTRON
• Home - Stiebel Eltron UK
• STIEBEL ELTRON | Pompy ciepła | Wentylacja | Ogrzewacze wody i pomieszczeń
• STIEBEL ELTRON | Tepelná čerpadla, rekuperace, ohřev vody
• STIEBEL ELTRON - Főoldal
• STIEBEL ELTRON
• STIEBEL ELTRON | Официальный сайт | Интернет-магазин
• STIEBEL ELTRON International
• STIEBEL ELTRON | Ohrev vody, vykurovanie, vetranie, chladenie
• stiebeleltronasia.com

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