operation and installation

OPERATION AND INSTALLATION
Air | water heat pump
»» WPL 33
CONTENTS 
SPECIAL INFORMATION
OPERATION
14. Shutdown��������������������������������������������������� 21
14.1 Standby mode��������������������������������������������������� 21
14.2 Power interruption��������������������������������������������� 21
1.
1.1
1.2
1.3
1.4
1.5
General information�����������������������������������������4
Relevant documents�������������������������������������������� 4
Safety instructions����������������������������������������������� 4
Other symbols in this documentation����������������������� 4
Units of measurement������������������������������������������ 4
Standardised output data�������������������������������������� 4
2.
2.1
2.2
2.3
Safety����������������������������������������������������������5
Intended use������������������������������������������������������ 5
General safety instructions������������������������������������ 5
Test symbols������������������������������������������������������ 5
3.
3.1
Appliance description���������������������������������������5
Function����������������������������������������������������������� 5
4.
Settings�������������������������������������������������������5
5.
Maintenance and care���������������������������������������6
Specification������������������������������������������������ 24
Dimensions and connections �������������������������������� 24
Wiring diagram������������������������������������������������� 26
Power diagrams WPL 33 single compressor partial
load operation��������������������������������������������������� 28
18.4 Power diagrams WPL 33 twin compressor full load
operation��������������������������������������������������������� 29
18.5 Data table�������������������������������������������������������� 30
6.
Troubleshooting����������������������������������������������6
GUARANTEE
INSTALLATION
7.
7.1
7.2
Safety����������������������������������������������������������7
General safety instructions������������������������������������ 7
Instructions, standards and regulations�������������������� 7
8.
8.1
8.2
8.3
Appliance description���������������������������������������7
Standard delivery������������������������������������������������ 7
Required accessories������������������������������������������� 7
Further accessories��������������������������������������������� 7
9.
9.1
9.2
9.3
9.4
9.5
Preparations��������������������������������������������������7
Sound emissions������������������������������������������������� 7
Minimum clearances�������������������������������������������� 8
Substrate���������������������������������������������������������� 8
Electrical installation������������������������������������������ 10
Buffer cylinder�������������������������������������������������� 10
10.
10.1
10.2
10.3
10.4
10.5
Installation�������������������������������������������������� 10
Transport��������������������������������������������������������� 10
Siting and connecting the appliance������������������������ 10
Heating water connection������������������������������������� 12
Heat meter������������������������������������������������� 12
Safety temperature controller for underfloor heating
system������������������������������������������������������������ 12
Flow rate on the heating side�������������������������������� 12
Condensate drain����������������������������������������������� 14
Second heat generator���������������������������������������� 14
Checking fans���������������������������������������������������� 14
10.6
10.7
10.8
10.9
15.
Appliance handover���������������������������������������� 21
16.
16.1
16.2
16.3
Troubleshooting�������������������������������������������� 22
Controls on the IWS�������������������������������������������� 22
Resetting the high limit safety cut-out��������������������� 22
Fan noise��������������������������������������������������������� 23
17.
Maintenance������������������������������������������������ 23
18.
18.1
18.2
18.3
ENVIRONMENT AND RECYCLING
11. Power supply����������������������������������������������� 14
11.1 Control panel���������������������������������������������������� 14
12.
12.1
12.2
12.3
Fitting casing components�������������������������������� 16
Outdoor installation�������������������������������������������� 16
Indoor installation���������������������������������������������� 16
Routing air hoses����������������������������������������������� 18
13.
13.1
13.2
13.3
13.4
Commissioning��������������������������������������������� 19
Checks before commissioning the heat pump manager19
Commissioning the heat pump manager������������������ 19
Initial start-up��������������������������������������������������� 20
Settings����������������������������������������������������������� 20
2 |WPL 33www.stiebel-eltron.com
SPECIAL INFORMATION 
SPECIAL INFORMATION
-- The appliance may be used by children aged 8
and older and persons with reduced physical,
sensory or mental capabilities or a lack of experience and know-how, provided that they are
supervised or they have been instructed on how
to use the appliance safely and have understood
the resulting risks. Children must never play with
the appliance. Children must never clean the appliance or perform user maintenance unless they
are supervised.
-- 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.
-- 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 an annual 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).
-- 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.
-- The heat pump manager automatically switches
the heat pump to summer or winter mode.
-- If the heat pump and frost protection are completely switched off, drain the system on the
water side.
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WPL 33 | 3
OPERATION
General information
OPERATION
1.3 Other symbols in this documentation
Note
Notes are bordered by horizontal lines above and below
the text. General information is identified by the adjacent
symbol.
ff
Read these texts carefully.
1. General information
The chapters “Special Information” and “Operation” are intended
for both the user and qualified contractors.
The chapter "Installation" is intended for qualified contractors.
Note
Read these instructions carefully before using the appliance and retain them for future reference.
Pass on the instructions to a new user if required.
1.1 Relevant documents
Operating and installation instructions for the WPM heat
pump manager
Operating and installation instructions for system
components
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.
ff
Steps to prevent the risk are listed.
1.2.2 Symbols, type of risk
Read the text next to these symbols carefully.
Symbol
!
Type of risk
Injury
Electrocution
1.2.3 Keywords
KEYWORD
DANGER
WARNING
CAUTION
Meaning
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.
Symbol
Meaning
Material losses
(appliance damage, consequential losses and environmental pollution)
Appliance disposal
!
ff
This 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 mm unless stated otherwise.
1.5 Standardised output data
Explanations to determine and interpret the specified standardised
output data.
1.5.1 Standard: EN 14511
The output data specifically mentioned in text, diagrams and
technical datasheets has been calculated according to the test
conditions of the standard shown in the heading of this section.
Generally, these standardised test conditions will not fully meet
the conditions found at the installation site of the system user.
Depending on the chosen test method and the extent to which
this method deviates from the conditions defined in the norm
shown in the heading of this section, any deviations can have a
considerable impact.
Further factors that have an influence on the test values are the
measuring equipment, the system configuration, the age of the
system and the flow rates.
A confirmation of the specified output data can only be obtained
if the test conducted for this purpose is also performed in accordance with the conditions defined in the norm shown in the
heading of this section.
4 |WPL 33www.stiebel-eltron.com
OPERATION
Safety
2. Safety
2.1 Intended use
The appliance is intended to heat buildings and domestic hot
water. The appliance is designed for extracting energy from the
air and utilising this energy in water-based heating systems within
the stated operating temperature ranges.
This 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 General safety instructions
Observe the following safety instructions and regulations.
-- The electrical installation and installation of the heating circuit must only be carried out by a recognised, qualified contractor or by our customer support engineers.
-- The qualified contractor is responsible for adherence to
all currently applicable regulations during installation and
commissioning.
-- Operate the appliance only when fully installed and with all
safety equipment fitted.
-- Protect the appliance from dust and dirt ingress during
building work.
!
WARNING Injury
The appliance may be used by children aged 8 and older
and persons with reduced physical, sensory or mental
capabilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have
understood the resulting risks. Children must never play
with the appliance. Children must never clean the appliance or perform user maintenance unless they are
supervised.
2.3 Test symbols
See type plate on the appliance.
3. Appliance description
The appliance is an air|water heat pump that operates as a heating heat pump. 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 60 °C.
The appliance is equipped with an electric emergency/booster
heater (DHC). If the dual mode point is undershot in mono mode
operation, the electric emergency/booster heater is activated to
safeguard heating operation and the provision of high DHW temperatures. In such a case in mono energetic operation, the electric
emergency/booster heater is activated as a booster heater.
Operational characteristics:
-- Suitable for underfloor and radiator heating
-- Still extracts heat from the outdoor air at - 20 °C outside
temperature.
-- Corrosion-protected, external casing made from zinc-plated
sheet steel plus powder-coated finish.
-- Comprises all components and safety equipment required for
operation.
-- Filled with non-combustible safety refrigerant.
Note
To control the heating system, you will need the heat
pump manager WPM.
3.1 Function
Heat is extracted from the outdoor air via the heat exchanger
(evaporator) on the air side. The now evaporated refrigerant is
compressed with one or two compressors. This process requires
electrical energy. The refrigerant is then at a higher temperature
level and transfers the heat drawn from the air to the heating
system via an additional heat exchanger (condenser). During this
process, the refrigerant expands, and the cycle restarts from the
beginning.
At air temperatures below approx. + 7 °C, the humidity in the air
condenses as hoarfrost on the evaporator fins. Any hoarfrost is automatically defrosted. Water created from this defrosting process
collects in the defrost pan and is drained off via a hose.
In 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 cylinder.
The heat pump automatically reverts to heating mode at the end
of the defrost cycle.
4. Settings
The appliance is controlled by the heat pump manager WPM and
does not require any special operator actions.
ff
Please observe the heat pump manager operating and installation instructions.
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WPL 33 | 5
OPERATION
Maintenance and care
!
Material losses
Maintenance work, such as checking the electrical safety,
must only be carried out by a qualified contractor.
ff
Protect the appliance from dust and dirt ingress during building work.
Note
Even when the condensate is draining away correctly,
expect water to drip from the appliance onto the floor.
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate. The type plate is located at the front
top, on the right or left hand side of the casing.
Sample type plate
*xxxxxxxxxxxxxxxxxx*
ff
A damp cloth is sufficient for cleaning all plastic and sheet
metal parts. Never use abrasive or corrosive cleaning agents.
ff
Every month, check that the condensate drain is working correctly (visual inspection). Remove contaminants and blockages immediately. When doing so, check whether water is
collecting below or next to the appliance. Observe the "Troubleshooting" chapter.
We recommend an annual 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).
!
Material losses
Keep the air discharge and intake apertures free from
snow and leaves.
6. Troubleshooting
Fault
There is no hot
water or the
heating system
stays cold.
Water is leaking
from the appliance.
Indoor installation: Condensate
is collecting on
the outside of the
appliance or the
air hoses.
Outdoor installation: Condensate
is collecting on
the outside of the
appliance.
Montageanweisung beachten! Dichtheit geprüft!
Made in Germany
1
26_03_01_1736
5. Maintenance and care
1 Number on the type plate
Cause
No power at the appliance.
Remedy
Check the fuses/MCBs in your
fuse box/distribution panel. Replace the fuses/reset the MCBs
if required. Notify your qualified
contractor if the fuses/MCBs
blow/trip again.
The condensate drain
Clean the condensate drain as
may be blocked.
described in "Maintenance and
care".
The drying out phase of If the room is sufficiently well
the building is not yet
ventilated and dehumidified,
complete.
this condensate should no
longer form on the appliance approx. two years after the house
was built.
The relative humidity in A change in weather conditions
the air is high (≥60 %). should no longer cause condensation to form on the appliance.
The appliance is sited
Ensure that the room is adein a damp room. Damp quately ventilated and dehumidrooms are those where ified. If necessary, hang your
humidity in the air is high laundry in a different room.
due to the drying of laun- Use a vented tumble dryer.
dry, for example.
Please note that condenser
tumble dryers do not reduce the
humidity in the air.
The air hoses are incor- Check whether the air hoses are
rectly fitted or poorly
correctly fitted and sealed. If
sealed.
necessary, refer to your qualified
Cold air escapes.
contractor.
The heat pump is drawing heat from the outdoor
air to heat the building.
This can cause the humidity in the outdoor air
to accumulate as dew or
frost on the cooled heat
pump casing. This is not
a defect.
6 |WPL 33www.stiebel-eltron.com
INSTALLATION
Safety
INSTALLATION
7. Safety
Only a qualified contractor should carry out installation, commissioning, maintenance and repair of the appliance.
7.1 General safety instructions
We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.
7.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
8. Appliance description
For outdoor installation the appliance offers additional frost protection of the heating water pipes. The integral frost protection
circuit starts the heating circuit pump in the heat pump circuit
automatically at +8 °C condenser temperature, and thereby ensures circulation in all water-filled sections.
The heat pump starts automatically when the temperature in the
heat pump circuit drops below + 5 °C.
In dual mode operation, return water from the second heat generator may flow through the heat pump. The return water temperature must not exceed 60 °C.
8.2 Required accessories
8.2.1 Required accessories for outdoor installation
-- Heat pump manager WPM
-- Accessories – outdoor installation
-- Pressure hoses SD 25 or SD 32
8.2.2 Required accessories for indoor installation
-- Heat pump manager WPM
-- Accessories – indoor installation
-- Pressure hoses SD 25 or SD 32
8.3 Further accessories
8.3.1 Further accessories for outdoor installation
-- Remote control for heating systems FE7
-- Remote control for heating systems FEK
-- Water softener HZEA
8.3.2 Further accessories for indoor installation
-- Air hose DN560 x 4 m
-- Hose connection panel 560
-- Wall outlet AWG 560 H
-- Wall outlet AWG 560 V
-- Wall outlet AWG 560 L
-- Wall outlet AWG 600 L
-- Remote control for heating systems FE7
-- Remote control for heating systems FEK
-- Condensate pump PK 10
-- Water softener HZEA
8.1 Standard delivery
9. Preparations
The casing components for the appliance are delivered in a separate pack.
9.1 Sound emissions
8.1.1 Standard appliance
-- Type plate
The appliance is louder on the air intake and air discharge sides
than on the two enclosed sides. Observe the following information
when selecting the installation location.
8.1.2 Casing components – outdoor installation
-- Hood – outdoor installation
-- Front panel
-- Back panel
-- Pipe bend, heating circuit flow
-- Pipe bend, heating circuit return
8.1.3 Casing components – indoor installation
-- Hood – outdoor installation
-- Front panel
-- Back panel
-- Pipe bend, heating circuit return
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Note
For details regarding the sound power level, see chapter
"Specification / Data table".
9.1.1 Sound emissions for outdoor installation
-- Lawn areas and shrubs help reduce the spread of noise.
-- Noise propagation can also be reduced through dense palisades or similar.
ff
Ensure that the air intake direction is the same as the dominant wind direction. Air should not be drawn in against the
wind.
ff
Never direct the air intake or discharge towards noise-sensitive rooms of the house, e.g. bedrooms.
ff
Avoid installation on large, echoing floor areas, e.g. tiled
floors.
WPL 33 | 7
INSTALLATION
Preparations
ff
Avoid installation between reflective building walls. Reflecting building walls can increase the noise level.
9.1.2 Sound emissions for indoor installation
-- Never install on joists.
ff
Never install the appliance directly below or next to living
rooms or bedrooms.
ff
Never direct the air intake and discharge apertures in external walls towards neighbouring windows or living rooms/
bedrooms.
!
Material losses
The air flow rate through the appliance must not fall
below the minimum level. If the air flow rate falls below
the minimum level, trouble-free operation of the appliance is not guaranteed.
ff
Ensure that the minimum air flow rate is maintained. Observe the details in chapter "Specification / Data table".
ff
If necessary, maintain a greater clearance to the surrounding
objects.
If the air discharge side of the appliance faces a wall of a house,
the cool air from the air discharge may cause condensate to form
on this wall.
9.2 Minimum clearances
9.2.1 Outdoor installation
≥700
Note
If the air discharge side faces house walls, maintain a
minimum clearance of 2 m between the appliance and
the building.
9.2.2 Indoor installation
≥1000
!
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.
ff
Ensure that the appliance is not fully enclosed by objects
such as buildings, walls or fences.
ff
If necessary, maintain a greater clearance to the surrounding
objects.
≥500
≥500
≥1000
ff
Never install the appliance in a recess. Two sides of the appliance must remain exposed.
ff
Maintain the minimum clearances to ensure trouble-free operation of the appliance and facilitate maintenance work.
ff
In order to prevent air "short circuits", maintain the minimum
clearances in the case of surrounding structures and in particular in the case of cascades. Maintain the flow rate on the
heat source side (see chapter "Specification / data table").
≥200
91_00_00_0036
≥1000
D0000019241
≥500
D0000019311
≥500
≥500
ff
Maintain the minimum clearances to ensure trouble-free operation of the appliance and facilitate maintenance work.
9.3 Substrate
General information
ff
Ensure that the appliance is accessible from all sides.
ff
Ensure that the base is level, even, solid and permanent.
ff
Ensure the entire appliance frame is in full contact with the
substrate. Uneven substrates can increase noise emissions.
8 |WPL 33www.stiebel-eltron.com
INSTALLATION
Preparations
9.3.1 Outdoor installation
Provide a recess (space) in the base to enable supply pipes/cables
to be routed into the appliance from below.
ff
Also protect all supply lines/cables against humidity, damage
and UV radiation by means of a conduit.
Note
When routing the condensate drain hose, observe chapter
"Installation / Condensate drain".
Foundations with recess
1
3
70
9.3.2 Indoor installation
150
270
50
1390
1
2
1 Air discharge
2 Air intake
3 Main wind direction
4 Recess
ff
Ensure that the foundations offer an adequate recess.
Observe the following information:
ff
Connect the heating circuit flow and return lines via flexible
pressure hoses. Suitable pressure hoses are listed in chapter "Appliance description / Required accessories for indoor
installation".
ff
Protect all pipe fixings and wall transitions with anti-vibration insulation.
8
Note
For details of the dimensions and positions of the air
intake and discharge apertures, as well as the outlets for
hydraulic lines and power cables, see chapter "Specification / Dimensions and connections / indoor installation".
1
2
7
6
D0000019237
A
4
A
1
2
3
4
5
6
7
8
5
1 Concrete base
2 Impact sound insulation
3 Floating screed
4 Floor covering
5 Recess
ff
Isolate the mounting surface around the heat pump by a recess. After completing the installation, seal the recess with
a water-impervious and sound insulating material, such as
silicone for example.
Example: Routing pipes in the base
5
4
26_03_01_1466
2
3
3
D0000023464
800
4
Depth of frost line
Heating circuit flow
Heating circuit return
Conduit for supply lines/cables
Foundation
Gravel bed
Drainage pipe
Condensate drain hose
Electrical cables/leads
!
Material losses
The floor of the installation room must be water resistant.
During appliance operation, the outdoor air releases up
to 50 l of condensate per day. If the condensate drain is
not installed correctly or if maintenance is not carried out
properly, water may escape. We recommend installing a
drain in the floor of the installation room.
Observe the following information:
ff
Only use weather-resistant cables.
ff
Protect the heating circuit flow and return lines against frost
with sufficient thermal insulation. Provide thermal insulation
in accordance with applicable regulations.
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WPL 33 | 9
INSTALLATION
Installation
9.4 Electrical installation
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with national and regional regulations.
WARNING Electrocution
Only use a permanent connection to the power supply.
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 with contactors, circuit breakers, fuses/MCBs, etc.
Note
The specified voltage must match the mains voltage.
ff
Observe the type plate.
Route cables with the following cross-sections in accordance with
the respective fuse rating:
MCB/fuse
rating
16 A
10. Installation
10.1 Transport
ff
Pay attention to the appliance's centre of gravity when transporting the appliance.
-- The centre of gravity is in the area where the compressor is
located.
-- Lifting slings for handling the standard appliance can be
hooked in anywhere on the bottom of the frame.
ff
Protect the appliance against heavy impact during transport.
-- If the appliance needs to be tilted during transport only do so
for a short time on one of its longitudinal sides.
-- The longer the appliance is tilted, the greater the distribution
of refrigerant oil in the system.
ff
Wait approximately 30 minutes before starting the appliance
after it has been tilted.
10.2 Siting and connecting the appliance
Conductor cross-section
Note
-- Two screws are available at the top of the appliance
frame to secure the cover.
-- In the frame at the bottom, one screw is available on
each side to secure the side panels.
2.5 mm²
1.5 mm² with only two live wires and routing on a wall or in an
electrical conduit on a wall.
The electrical data is provided in the chapter "Specification" . The
BUS cable requires a cable J-Y (St) 2x2x0.8 mm².
!
!
Material losses
Provide separate fuses/MCBs for the three power circuits
of the appliance, the control unit and the electric emergency/booster heater.
Wind the six screws out of the appliance frame and keep them safe.
!
Material losses
After installing the heat pump, tighten the pipe fittings
on the pressure and inlet lines of the compressor with a
torque of 100 Nm.
Material losses
Provide common fuses/MCBs for the control cable of the
appliance and the heat pump manager.
9.5 Buffer cylinder
A buffer cylinder is recommended to ensure trouble-free appliance
operation.
1
2
26_03_01_0670
The buffer cylinder is not only installed to provide hydraulic separation of the flow rates in the heat pump circuit and the heating
circuit, but also as an energy source for defrosting.
1 Pressure line fittings
2 Suction line fittings
10 |WPL 33www.stiebel-eltron.com
INSTALLATION
Installation
10.2.2 Indoor installation
ff
Position the standard appliance on the prepared substrate.
10.2.1 Outdoor installation
ff
Pay attention to the air discharge direction.
ff
Remove the knock-out "outlet for supply pipe/cable" in the
bottom of the appliance.
ff
Position the standard appliance on the prepared substrate.
6
6
10
4
5
7
9
2
3
8
8
5
1
1
26_03_01_0670
9
1
2
7
3
1 Condensate drain hose
2 Heating flow (flexible pressure hose with thermal insulation)
3 Heating return (flexible pressure hose with thermal
insulation)
4 Electrical cables/leads
5 Cable entry for electrical cables
6 Control panel
7 Conduit for supply lines/cables
8 Pipe bend (included in the accessories)
9 Heating flow connectors
10Air vent valve
ff
Install the pipe bend for the heating circuit return (component from "Accessories for outdoor installation").
ff
Install the pressure hoses and pipe bends for the heating
circuit flow and return (part of "Accessories for outdoor
installation").
ff
Route the water pipes and electrical cables into the appliance
from below through the knock-outs in the base.
Note
Do not fit the casing components until the electrical and
hydraulic connections have been made.
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1 Condensate drain hose
2 Heating flow (flexible pressure hose with thermal insulation)
3 Heating return (flexible pressure hose with thermal
insulation)
4 Electrical cables/leads
5 PG fitting with strain relief
6 Pipe outlet
7 Control panel
8 Pipe bend (included in the accessories)
9 Heating return connector
ff
Install the pipe bend for the heating circuit return (component from "Accessories for indoor installation").
ff
Route the condensate drain hose either to the right, left or
front of the appliance.
1
6
5
2
4
3
26_03_01_1687_
1
26_03_01_0669
4
1 Heating return
2 Heating flow
3 Appliance power cable
4 Electric emergency/booster heater power cable
5 Control cable
6 BUS cable
ff
Place the hood on the appliance and secure with two screws.
ff
Cut out the hood to accommodate the water pipe outlets.
ff
Route the pressure hoses from above through the cover and
into the appliance.
ff
Route the electrical cables from above into the appliance
through the cable entries and through the strain relief fittings (PG fittings).
The open PG fittings are used to route the power cable for
the appliance, control cable and BUS cable.
WPL 33 | 11
INSTALLATION
Installation
10.3 Heating water connection
!
Note
Suitable appliances for water softening, as well as for
filling and flushing heating systems, can be obtained via
trade suppliers.
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 guides.
ff
Thoroughly flush the pipework before connecting the heat
pump. Foreign bodies, such as rust, sand or sealant can impair the operational reliability of the heat pump.
ff
Connect the heat pump on the heating water side. Check for
tightness.
ff
Connect the flexible pressure hoses to the connectors.
The pressure hoses must be at least 1 metre long.
Structure-borne noise is largely prevented by the anti-vibration
construction of the heat pump and by the flexible pressure hoses,
which act as anti-vibration mounts.
Note
If you treat the fill water with inhibitors or additives, the
same limits as for desalination apply.
Venting the heating system
ff
Vent the pipework carefully. For this, also activate the air
vent valve integrated into the heating flow inside the heat
pump.
10.4 Heat meter
!
Oxygen diffusion
!
Material losses
Avoid open heating systems and plastic pipes in underfloor heating systems which are permeable to oxygen.
In underfloor 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 cylinder, on
buffer cylinders, steel heating elements or steel pipes).
!
Material losses
The products of corrosion (e.g. rusty sludge) can settle in
the heating system components and can result in a lower
output or fault shutdowns due to reduced cross-sections.
10.3.1 Filling the heating system
Heating water quality
Carry out a fill water analysis before the system is filled. The fill
water analysis may be requested from the relevant water supply
utility.
!
Material losses
To avoid damage as a result of scaling, it may be necessary to soften or desalinate the fill water. Always observe
the fill water limits specified in the "Specification / Data
table" chapter.
ff
Recheck these limits 8-12 weeks after commissioning and during the annual system service.
Note
With a conductivity >1000 μS/cm, desalination treatment
is recommended in order to avoid corrosion.
Material losses
When installing a heat meter, note that most heat meters cause a substantial pressure drop, and therefore you
should select a larger circulation pump.
10.5 Safety temperature controller for underfloor
heating system
!
Material losses
In case of failure, in order to prevent an excessively high
flow temperature in the underfloor heating system, we
generally recommend the use of a safety temperature
controller to limit the system temperature.
10.6 Flow rate on the heating side
10.6.1 Minimum flow rate for operation without a buffer
cylinder
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.
In an installation with several heating circuits, we recommend
using a low loss header.
The minimum flow rate is set via the temperature differential of
the heating system.
Set the heating circuit pump so that the value is equal to or lower
than the maximum temperature differential.
The setting is made in heat pump operation alone. For this, the
following settings must be made first:
ff
Temporarily remove the fuse from the electric emergency/
booster heater to isolate it from the power supply. Alternatively, switch OFF the second heat generator.
ff
Operate the heat pump in heating mode.
12 |WPL 33www.stiebel-eltron.com
INSTALLATION
Installation
Minimum flow rate with single room control via FE 7 or FEK
14
Maximum temperature differential on the heating side with overflow valve or single room control with remote control
12
10
14
8
12
6
10
4
2
6
0
-15
2
0
-15
-10
-5
0
5
10
15
20
25
30
84_03_01_0156_
4
X Outside temperature [°C]
Y Maximum temperature differential [K]
In such cases, one or more heating circuits in the heating system
must be left open. The open heating circuit(s) should be installed
in the lead room (room in which the remote control is installed,
e.g. the living room). Single room control can then be implemented with the remote control or indirectly by adapting the heating
curve.
ff
Fully open the heating circuit(s) in the lead room.
ff
Close all other heating circuits.
ff
If an overflow valve is installed in the heating system, close
this fully before determining the minimum flow rate.
ff
Make the settings at the circulation pump when the temperature differential between the flow and return temperature
has stabilised.
Set the heating circuit pump so that the minimum flow rate required to operate the system is safeguarded.
Note
Never adjust the flow rate of the cylinder circuit pump.
The flow rate of the cylinder circuit pump has been optimised at the factory.
-10
-5
0
5
10
15
20
25
30
84_03_01_0156_
8
X Outside temperature [°C]
Y Maximum temperature differential [K]
ff
Make the settings at the circulation pump when the temperature differential between the flow and return temperature
has stabilised.
ff
Compare the resulting temperature differential between the
flow and return at the appliance with the diagram "Maximum
temperature differential on the heating side with low loss
header or buffer cylinder".
ff
Set the head of the heating circuit pump to a level that safeguards the heating flow rate required to operate the heat
pump (see chapter "Specification / Data table").
ff
If the appliance will be used for DHW heating, check the setting of the pump head in DHW mode.
ff
If necessary, adjust the head to match the heating circuit
pump.
10.6.3 Using highly energy efficient pumps [HE]
If you use a HE pump as the heating circuit pump, you will have to
adjust the minimum flow rate using the temperature differential
of the heating system.
ff
Set the heating circuit pump to ∆p-constant.
ff
Set ∆p-constant to the value at which the maximum temperature differential of the heating system is reached.
ff
Compare the resulting temperature differential between the
flow and return at the appliance with the diagram "Maximum
temperature differential on the heating side with overflow
valve or single room control with remote control".
ff
Set the heating circuit pump so that the maximum temperature differential is achieved or undershot.
10.6.2 Flow rate with low loss header or buffer cylinder
The flow rate can be adjusted using the temperature differential
of the buffer circuit. The value must not fall below the minimum
flow rate.
Maximum temperature differential on the heating side with low
loss header or buffer cylinder
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WPL 33 | 13
INSTALLATION
Power supply
A hose is fitted at the factory to the defrost pan to act as condensate drain. The hose terminates near the knock-out on the bottom
plate to the right of the refrigeration drive.
!
The height can be adjusted by a corresponding rearrangement
of the spacer brackets from the top to the bottom of the retainer
or vice-versa.
Material losses
Ensure the hose is not kinked. Route the hose with a
slope. The condensate must be able to drain freely.
3
2
Use a suitable condensate pump if there is insufficient fall. Observe
the delivery head of the building.
If using a condensate pump, ensure that it is designed to deliver
at least 6 l/min.
Outdoor installation
ff
Route the hose downwards out of the appliance. The condensate hose can also be routed out of the appliance to the right
through the knock-out in the side panel.
ff
Channel the condensate into a drain or allow it to drain into a
coarse gravel soakaway. Ensure the pipework is free from the
risk of frost.
If required, you may install a ribbon heater on the condensate
hose. We recommend that you install a ribbon heater if the routing of the condensate hose means it is at risk of frost or is fully
exposed to the elements. The ribbon heater is switched on at a
temperature < 0 °C.
ff
Observe the chapter "Electrical connection".
Indoor installation
ff
Route the condensate into a drain. For this, route the hose
through an opening in the floor plate and frame (see chapter
"Installation / Siting and connecting the appliance / Indoor
installation"), and route it out of the appliance to the right by
removing the knock-out in the bottom of the side panel.
26_03_01_1686_
In the following diagram the position of the knock-out for the
condensate hose can be seen.
10.8 Second heat generator
For dual mode systems, always connect the heat pump into the
return of the second heat generator (e.g. oil boiler).
1
3
26_03_01_0662
10.7 Condensate drain
1 Fan bracket
2 Fan
3 Spacer brackets
11. Power supply
Note
Please observe the heat pump manager operating and
installation instructions.
The connection must only be carried out by a qualified contractor
and in accordance with these instructions.
Permission to connect the appliance may need to be obtained from
your local power supply utility.
11.1 Control panel
WARNING Electrocution
Before working on the appliance, isolate it from the
power supply at the control panel.
Terminals are located inside the appliance control panel and become accessible by removing the front panel.
ff
Observe the information in chapters "Preparations / Electrical
installation", "Installation / Outdoor installation" and "Installation / Indoor installation".
ff
Remove the control panel from the casing.
ff
Use appropriate electrical cables in accordance with local
regulations.
ff
Check the function of the strain relief fittings.
ff
Connect the heating circuit pump to the heat pump manager
in accordance with the technical guides.
10.9 Checking fans
Incorrect transport can slightly shift the fan, resulting in the fan
impeller dragging on the inlet nozzle.
If required, move the fan retainer to the left or to the right in its
slots.
14 |WPL 33www.stiebel-eltron.com
INSTALLATION
Power supply
Terminals X3: Appliance and electric emergency/booster heater
(DHC)
ff
Connect the appliance to terminal X3.
ff
Connect the electric emergency/booster heater to terminal X3
if you want to utilise the following appliance functions:
Appliance function
Mono energetic operation
Effect of the electric emergency/booster
heater
If the heat pump undershoots the dual mode point, the
electric emergency/booster heater safeguards both
the heating operation and the delivery of high DHW
temperatures.
Emergency mode
Should the heat pump suffer a fault that prevents its
continued operation, the heating output will be covered by the electric emergency/booster heater.
Heat-up program
Where return temperatures are <25 °C, the electric
(only for underfloor emergency/booster heater must provide the necessary
heating systems)
heat for screed drying.
With these low system temperatures, the drying heat
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, you can disconnect the electric emergency/booster heater if it is not
required for the appliance operation.
Please note that during the heat-up program, the
emergency operation cannot be selected.
Pasteurisation control The electric emergency/booster heater starts automatically when the pasteurisation control is active in order
to regularly heat the DHW to 60 °C to protect it against
the growth of legionella bacteria.
Material losses
The compressors in the appliance can only turn in one
direction. If the appliance is not connected correctly, the
compressor remains in operation for 30 seconds then
switches off.
On the heat pump manager display, the fault message NO OUTPUT
appears.
ff
To change the direction of the rotating field, when the power
is disconnected, swap over two phases.
!
Material losses
When connecting the electric emergency/booster heater (DHC), a flow sensor must be connected to the heat
pump manager and installed close to the heat pump at
the heating flow.
ff
Cover and seal the mains terminal (X3) when all electric cables have been connected.
Connections X4, X2: Control unit and low voltage
Note
Provide common fuses/MCBs for the control cable of the
appliance and the heat pump manager.
PE
Plombendraht
durch die
Schraubenköpfe
58907/1-2/10.84
X3
Compressor power supply (HP)
L1, L2, L3, N, PE
X3
Electric emergency/booster heater power supply
(DHC)
L1, L2, L3, N, PE
Connected
load
2.6 kW
3.0 kW
3.2 kW
5.6 kW
5.8 kW
6.2 kW
8.8 kW
X4
X4
Terminal assignment
L1
L2
L3
L1
L1
L1
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L2
L2
L2
L3
L3
L3
N
N
N
N
N
N
N
PE
PE
PE
PE
PE
PE
PE
X2
D0000057829
26_03_01_0672
X3
!
X2
Control voltage (controller)
Power supply: L, N, PE
Control inputs:
Heat source 2 (HS 2)
External control, e.g. stand-alone mode (ext. contr.)
Low voltage (LV)
BUS High H
BUS Low L
BUS earth
BUS " + " (not required)
WPL 33 | 15
INSTALLATION
Fitting casing components
12. Fitting casing components
12.2 Indoor installation
12.1 Outdoor installation
12.2.1 Sealing the appliance
Before fitting the casing sections, seal the appliance by affixing
a plastic film; this will prevent condensation forming under all
operating conditions.
2
The plastic film is supplied with the casing sections.
1
1
Side panel
Cover
Front panel
Type plate
Back panel
26_03_01_1456
1
2
3
4
5
4
26_03_01_0929_
5
3
ff
Apply fabric tape to seal the hole at the bottom of the frame
on the l.h. side. The fabric tape is supplied with the accessory
"thermally insulated air hose".
1
3
1 Bevelled edge
2 Control panel
3 Screw
ff
Position the cover on the appliance. Ensure that the bevelled
edge of the appliance cover is on the same side as the control
panel.
ff
Secure the cover with two screws.
ff
Hook the side panels, front panel and back panel into the
hooks on the standard appliance. Secure the casing sections
at the bottom with one screw each.
ff
Affix the type plate supplied in a highly visible position on
one of the casing panels of the appliance.
26_03_01_1454
26_03_01_1738
2
ff
Hang the film with the pre-cut holes onto the hooks on the
appliance.
16 |WPL 33www.stiebel-eltron.com
26_03_01_1455
INSTALLATION
Fitting casing components
ff
Remove the backing from the adhesive strips on the frame
and on the plastic film.
ff
Secure the plastic film by pressing it onto the standard
appliance.
ff
Seal the gaps around the hooks with fabric tape.
12.2.2 Fitting casing components
2
1
4
1
26_03_01_1443
5
3
1 Side panel
2 Cover
3 Front panel
4 Type plate
5 Back panel
ff
Place the hood on the appliance and secure with two screws.
ff
Hook the side panels and front and back doors onto the
standard appliance. Secure each of these with one screw.
ff
Affix the type plate supplied to top front r.h. or l.h. side of the
side panel where it will be clearly visible.
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WPL 33 | 17
INSTALLATION
Fitting casing components
12.3 Routing air hoses
Note
Air hoses guide the intake air to the appliance and route
the discharge air from the appliance outdoors. They are
highly flexible, thermally insulated and self-extinguishing
in case of fire.
26_03_01_1447
Note
In the case of heat pumps installed indoors, if a blower door test to EN 13829 is to be carried out, then all
apertures which are purposely provided in the building
envelope must be closed or sealed off before the air hoses
are installed.
ff
For the blower door test, seal off the heat pump's
supply air and extract air ducts.
ff
Push the inner hose halfway down the connector.
The air hose can be extended by turning the hose spirals into
each other. There must be an overlap of approx. 30 cm. The total
length of hoses on the air intake and discharge sides must not
exceed 8 m.
ff
Never incorporate more than four 90 ° bends. The radius of
the bends must be at least 600 mm, relative to the centre of
the hose.
ff
Cut to size using a sharp knife. The hose spirals can be cut
with wire cutters.
ff
Secure the air hose approx. every 1 m to prevent it sagging.
ff
Manipulate the ends of the air hoses to fit the oval shape of
the connectors on the cover and the hose connection panels
or wall outlets.
26_03_01_1448
12.3.1 General information
ff
Seal the inner hose by affixing it to the connector using the
fabric tape provided.
26_03_01_1449
12.3.2 Fitting air hoses
26_03_01_1450
26_03_01_1446
ff
Place the sealing strip provided around the connector.
ff
Firstly, push the outer hose slightly upwards.
ff
Pull the outer hose over the connector.
18 |WPL 33www.stiebel-eltron.com
INSTALLATION
Commissioning
13.1.1 High limit safety cut-out
26_03_01_1452
With ambient temperatures of below -15 °C it is possible that the
high limit safety cut-out of the electric emergency/booster heater
may trip.
ff
Check whether the high limit safety cut-out has tripped.
1
ff
Secure the hose using the oval hose clip provided and seal it.
12.3.3 Insulating the brickwork
Ensure that no cold bridges form between the brickwork and the
hose connection panels or wall outlets. Cold bridges can result in
condensation forming in the brickwork.
ff
If necessary, fit suitable insulation between the brickwork
and the hose connection panels or wall outlets.
2
13. Commissioning
Commission in accordance with these installation instructions
and the operating and installation instructions of the heat pump
manager. Our customer support can assist with commissioning,
which is a chargeable service.
Where this appliance is intended for commercial use, the rules of
the relevant Health & Safety at Work Act may be applied during
commissioning. For further details, check with your local authorising body (in Germany, for example, this is the TÜV).
13.1 Checks before commissioning the heat pump
manager
!
26_03_01_1900
A qualified contractor must commission the appliance, make all
settings at the commissioning level of the heat pump manager,
and instruct the user.
1 High limit safety cut-out reset button
2 Electric emergency/booster heater
ff
Reset the high limit safety cut-out by pressing the reset
button.
1
13.2 Commissioning the heat pump manager
Commission the heat pump manager and make all settings in
accordance with the operating and installation instructions for
the heat pump manager.
Material losses
Observe the maximum system temperature in underfloor
heating systems.
ff
Check whether the heating system is charged to the correct
pressure and whether the quick-action air vent valve in the
heat pump is open.
ff
Check whether the outside temperature sensor and the return sensor are correctly placed and connected.
ff
Check whether further sensors are correctly positioned and
connected.
ff
Check whether the power supply is connected correctly.
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WPL 33 | 19
INSTALLATION
Commissioning
13.3 Initial start-up
Compressor mode with external second heat generator
13.3.1 DIP switch (WP-Typ) on the IWS
(integral heat pump control unit)
ff
Open the control panel.
ff
The IWS is located on the r.h. side.
!
Material losses
In this case, do not connect the electric emergency/booster heater.
If the appliance is operated in dual mode with an external second
heat source or as a module with a further WPL, set the DIP switch
as follows:
WP - Typ
1
D0000057057
ON
2
1
2
3
4
BA
DIP switch (BA)
These DIP switches have no function.
13.4 Settings
4
1
2
3
4
3
26_03_01_0921_
BA
LEDs
DIP switch (WP-Typ)
Reset button
DIP switch (BA)
13.4.1 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 and
thermostatic valves to close, which may lead to the minimum flow
rate required for the heating circuit not being achieved.
ff
Observe the WPM operating and installation instructions.
WP - Typ
The following steps will help you to adjust the heating curve correctly:
-- Fully open thermostatic or zone valves in a lead room (e.g.
living room and bathroom).
We do not recommend installing thermostatic or zone valves
in the lead room. Control the temperature for these rooms
via remote control.
-- At different outside temperatures (e.g. –10 °C and +10 °C),
adjust the heating curve so the required temperature is set in
the lead room.
ON
Standard values to begin with:
DIP switch (WP-Typ)
With the DIP switch (WP-Typ), you can set the IWS to suit the
relevant heat pump type.
1
2
3
4
ff
Check whether the DIP switch is set correctly.
D0000057056
Factory setting:
Compressor mode with electric emergency/booster heater
Parameter
Heating curve
Underfloor heating system Radiator heating system
0.4
0.8
Control response time 10
10
Comfort temperature 20 °C
20 °C
If the room temperature is not high enough in spring and autumn
(approx. 10 °C outside temperature), raise the "COMFORT TEMPERATURE" parameter in the heat pump manager menu under
"SETTINGS / HEATING / HEATING CIRCUIT".
Note
If no remote control is installed, raising the "COMFORT
TEMPERATURE" parameter leads to a parallel offset of
the heating curve.
20 |WPL 33www.stiebel-eltron.com
INSTALLATION
Shutdown
Increase the "HEATING CURVE" parameter, if the room temperature is not high enough when outside temperatures are low.
If you raise the "HEATING CURVE" parameter, adjust the zone valve
or thermostatic valve in the lead room to the required temperature
when outside temperatures are high.
!
!
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.
!
14. Shutdown
Material losses
With underfloor heating systems, observe the maximum
permissible temperature for the system.
13.4.2 Other settings
ff
For operation with and without buffer cylinder, observe
chapter "Operation / Menu structure / Menu SETTINGS /
STANDARD SETTING / BUFFER OPERATION" in the operating
and installation instructions of the WPM.
When using the heat-up program
If you use the heat-up program, make the following settings on
the WPM:
ff
Initially set parameter "DUAL MODE TEMP HZG" to 30 °C.
ff
Then set parameter "LOWER APP LIMIT HZG" to 30 °C.
Note
After completing the heat-up process, reset the parameters "DUAL MODE TEMP HZG" and "LOWER APP LIMIT HZG"
to their respective standard values or to the respective
system values.
www.stiebel-eltron.com
Material losses
Never interrupt the heat pump power supply, even outside the heating season. Otherwise, system frost protection is not guaranteed.
The heat pump manager automatically switches the heat
pump to summer or winter mode.
14.1 Standby mode
To shut down the appliance, simply set the heat pump manager
to "Standby mode". This way the safety functions that protect the
system remain enabled, e.g. frost protection.
14.2 Power interruption
If the system is to be isolated from the power supply permanently,
please observe the following:
!
Material losses
If the heat pump and frost protection are completely
switched off, drain the system on the water side.
15. Appliance handover
Explain the appliance function to users and familiarise them with
its operation.
Note
Hand over these operating and installation instructions
to users for safe-keeping.
Always carefully observe all information in these instructions. They provide information on safety, operation, installation and maintenance of the appliance.
WPL 33 | 21
INSTALLATION
Troubleshooting
16. Troubleshooting
Note
Please observe the heat pump manager operating and
installation instructions.
Note
The following inspection instructions may only be carried
out by a qualified contractor.
Fault
Cause
The appliance stops and There is a heat pump
restarts after the idle pe- fault.
riod has expired. The red
LED flashes.
The appliance stops per- Five faults have ocmanently. The red LED is curred within two
illuminated steadily.
hours of compressor
runtime.
If you cannot locate the fault using the heat pump manager, use
the controls on the IWS.
ff
Open the control panel.
ff
Read the following sections on troubleshooting and carry out
the instructions.
Green LED (centre)
16.1 Controls on the IWS
No function.
The IWS helps you to troubleshoot if the fault cannot be identified
using the WPM.
16.1.1 Reset button
Remedy
Check the fault message
on the WPM.
Find the solution in the
WPM instructions (fault
list). Reset the IWS.
Check the fault message
on the WPM. Find the
solution in the WPM instructions (fault list). Reset
the IWS.
The LED flashes during initialisation, and illuminates constantly
after the BUS address has been assigned successfully. Connection
to the WPM has been established.
Green LED (right)
If the IWS was not initialised successfully, you can reset it with this
reset button. Observe the "Reinitialising IWS" chapter in the heat
pump manager operating and installation instructions.
16.2 Resetting the high limit safety cut-out
1
If the heating water temperature exceeds 85 °C, the electric emergency/booster heater shuts down.
1
BA
2
26_03_01_0921_
BA
2
1 LEDs
2 Reset button
Faults indicated by the LED:
-- High pressure fault
-- Low pressure fault
-- Central fault
-- Hardware fault on the IWS (see fault list, operating and installation instructions of the heat pump manager)
26_03_01_1900
Red LED (left)
1 High limit safety cut-out reset button
2 Electric emergency/booster heater
ff
Remove the cause of the fault.
ff
Reset the high limit safety cut-out by pressing the reset button. To do so, use a pointed object.
ff
Check whether the heating water is being circulated at a sufficiently high flow rate.
22 |WPL 33www.stiebel-eltron.com
INSTALLATION
Maintenance
16.3 Fan noise
The heat pump draws heat from the outdoor air. This causes the
outdoor air to cool down. At outside temperatures of 0 °C to 8 °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 grille, the fan blades or the airways. If the fan
comes into contact with this ice, noise develops.
How to remedy rhythmic scratching or grinding noises:
ff
Check whether the condensate drain is clear of obstructions.
ff
Carry out a manual defrost, repeatedly if required, until the
fan runs free again.
ff
At outside temperatures above + 1 °C, switch the appliance
off for around 1 hour or switch it over to emergency mode.
After this, the ice should have melted.
ff
Check whether the appliance is installed in line with the installation conditions.
ff
If the noises occur frequently, notify customer support.
17. Maintenance
We recommend that you perform an annual inspection (to establish the current condition of the system), and carry out any
maintenance as required (to return the system into its original
condition).
If heat meters are installed, their sieves should be cleaned regularly.
Regularly remove all leaves and accumulated dirt from the evaporator fins, which can be accessed by removing the side panel on
the condenser side.
Check the condensate drain is working correctly. Remove any
contamination.
www.stiebel-eltron.com
WPL 33 | 23
INSTALLATION
Specification
18. Specification
18.1 Dimensions and connections
18.1.1 Outdoor installation
i21
i21
D0000016772
g02
g01
WPL 33
g01 Air intake
g02 Air discharge
i21 Entry supply line
24 |WPL 33www.stiebel-eltron.com
INSTALLATION
Specification
1261
1162
18.1.2 Indoor installation
800
d45
1390
g01
g02
179
432
459
192
D0000016774
b01
e02
203
289
e01
WPL 33
b01
d45
e01
e02
g01
g02
Entry electrical cables
Condensate drain
Heating flow
Heating return
Air intake
Air discharge
www.stiebel-eltron.com
Male thread
Male thread
Nominal diameter
Nominal diameter
G 1 1/4
G 1 1/4
DN 560
DN 560
WPL 33 | 25
INSTALLATION
Specification
18.2 Wiring diagram
22
26_03_01_0065
21
A2
B5
E1
E2
E3
F2
F5
F7
F13
K1
K2
K3
K4
Integral heat pump control unit IWS
Temperature sensor, hot gas
Electric emergency/booster heater (DHC)
Oil sump heater compressor 1
Oil sump heater compressor 2
High pressure switch
High limit safety cut-out for DHC
Fan temperature limiter
Frost protection temperature sensor
Resistance start contactor compressor 1
Compressor start contactor compressor 1
Resistance start contactor compressor 2
Compressor start contactor compressor 2
K5
K6
K7
M1
M2
M3
N2 N3
P1
P3
R1...3
R4...6
X1
Electric emergency/booster heater contactor
Safety contactor
Contactor fan
Motor compressor 1
Motor compressor 2
Motor fan
Defrost pressure differential switch
Temperature controller, oil sump heater
High pressure sensor
Low pressure sensor
Starting resistors compressor 1
Starting resistors compressor 2
Connection terminals
26 |WPL 33www.stiebel-eltron.com
26_03_01_0065
INSTALLATION
Specification
X2
X3
X4
X25
X26
X27
X28
X29
X30
X33
X35
Y1
Z3
LV terminal
Power supply
Control terminals
Threaded earth block
Plug-in earth block
Socket terminal strip 2-pole
Socket terminal strip 4-pole
Socket plug IWS 12-pin
Socket plug IWS 3-pin
Socket plug IWS 5-PIN
Socket plug IWS 6-PIN
Diverter valve, defrost
Suppressor
www.stiebel-eltron.com
WPL 33 | 27
INSTALLATION
Specification
18.3 Power diagrams WPL 33 single compressor partial load operation
Key to output diagrams
Y
Heating output [kW] | Power consumption [kW] | Coefficient of performance ε [-]
X
Inlet temperature of the heat source medium [°C]
1
Flow temperature 35 °C
2
Flow temperature 50 °C
3
Flow temperature 60 °C
Heating output
25
1
2
3
20
15
10
26_03_01_0678
5
0
-20
-15
-10
-5
0
5
10
15
20
25
30
Power consumption
10
26_03_01_0678
1
2
3
5
0
-20
-15
-10
-5
0
5
10
15
20
25
30
COP
5
4
3
2
1
-20
-15
-10
-5
0
5
10
15
20
25
30
26_03_01_0678
1
2
3
28 |WPL 33www.stiebel-eltron.com
INSTALLATION
Specification
18.4 Power diagrams WPL 33 twin compressor full load operation
Key to output diagrams
Y
Heating output [kW] | Power consumption [kW] | Coefficient of performance ε [-]
X
Inlet temperature of the heat source medium [°C]
1
Flow temperature 35 °C
2
Flow temperature 50 °C
3
Flow temperature 60 °C
Heating output
25
1
2
3
20
15
10
26_03_01_0325
5
0
-20
-15
-10
-5
0
5
10
15
20
25
30
Power consumption
15
1
2
3
10
26_03_01_0325
5
0
-20
-15
-10
-5
0
5
10
15
20
25
30
COP
4
2
1
-20
-15
www.stiebel-eltron.com
-10
-5
0
5
10
15
20
25
30
26_03_01_0325
1
2
3
3
WPL 33 | 29
INSTALLATION
Specification
18.5 Data table
Output details apply to new appliances with clean heat exchangers.
The power consumption figures for the integral auxiliary drives are maximum values and may vary subject to operating point.
The power consumption of the integral auxiliary drives is included in the output details of the heat pump (to EN 14511).
WPL 33
185348
Heating output to EN 14511
Heating output at A10/W35 (EN 14511)
Heating output at A10/W35 twin compressor operation (EN 14511)
Heating output at A7/W35 (EN 14511)
Heating output at A2/W35 (EN 14511)
Heating output at A2/W35 twin compressor operation (EN 14511)
Heating output at A-7/W35 (EN 14511)
Heating output at A-7/W35 twin compressor operation (EN 14511)
Power consumption
Power consumption, emergency/booster heater
Power consumption, fan heating max.
Power consumption to EN 14511
Power consumption at A10/W35 (EN 14511)
Power consumption at A10/W35 twin compressor operation (EN 14511)
Power consumption at A7/W35 (EN 14511)
Power consumption at A2/W35 (EN 14511)
Power consumption at A-7/W35 (EN 14511)
Power consumption at A-7/W35 twin compressor operation (EN 14511)
Power consumption at A2/W35 twin compressor operation (EN 14511)
COP to EN 14511
COP at A10/W35 (EN 14511)
COP at A10/W35 twin compressor operation (EN 14511)
COP at A7/W35 (EN 14511)
COP at A2/W35 (EN 14511)
COP at A2/W35 twin compressor operation (EN 14511)
COP at A-7/W35 twin compressor operation (EN 14511)
Sound data
Sound power level (EN 12102)
Sound power level, outdoor installation with silencer accessories
Sound power level indoor installation (EN 12102)
Sound power level outdoor installation (EN 12102)
Sound power level, outdoor installation without silencer accessories (EN 12102)
Sound pressure level at 1 m distance in a free field
Sound pressure level at 5 m distance in a free field
Sound pressure level at 10 m distance in a free field
Application limits
Min. application limit on the heating side
Max. application limit on the heating side
Min. application limit, heat source
Max. application limit, heat source
Water hardness
pH value (with aluminium compounds)
pH value (without aluminium compounds)
Chloride
Conductivity (softening)
Conductivity (desalination)
Oxygen 8-12 weeks after filling (softening)
Oxygen 8-12 weeks after filling (desalination)
Electrical data
Frequency
Phases, emergency/booster heater
Phases, compressor
Phases, controller
Rated voltage, emergency/booster heater
Rated voltage, controller
Rated voltage, compressor
kW
kW
kW
kW
kW
kW
kW
15.1
20.7
12.61
10.78
17.7
8.9
14.9
kW
kW
8.8
0.27
kW
kW
kW
kW
kW
kW
kW
3.7
6.3
3.5
3.31
3.2
5.8
6.1
4.1
3.3
3.6
3.26
2.9
2.6
dB(A)
dB(A)
dB(A)
dB(A)
dB(A)
dB(A)
dB(A)
dB(A)
65
63
58
65
65
57
43
37
°C
°C
°C
°C
°dH
15
60
-20
30
≤3
8.0-8.5
8.0-10.0
<30
<1000
20-100
<0.02
<0.1
mg/l
μS/cm
μS/cm
mg/l
mg/l
Hz
V
V
V
50
3/N/PE
3/PE
1/N/PE
400
230
400
30 |WPL 33www.stiebel-eltron.com
INSTALLATION | GUARANTEE | ENVIRONMENT AND RECYCLING
Specification
Compressor fuse/MCB
MCB/fuse protection, controller
MCB/fuse protection, emergency/booster heater
Starting current (with/without starting current limiter)
Versions
Condenser material
Refrigerant
Refrigerant charge
Compressor oil
Defrost type
IP rating
Dimensions
Height (indoor installation)
Height (outdoor installation)
Width (indoor installation)
Width (outdoor installation)
Depth (indoor installation)
Depth (outdoor installation)
Weights
Weight
Values
Total available external pressure differential
Internal pressure differential
Max. available external pressure differential, inlet side
Min heating flow rate
Nominal heating flow rate at A2/W35, B0/W35 and 7 K
Heating flow rate (EN 14511) at A7/W35, B0/W35 and 5 K
Flow rate, heat source side
WPL 33
3 x C 25
1 x B 16
3 x B 16
<30/-
A
A
A
A
kg
1.4401/Cu
R407 C
4.4
Emkarate RL 32 3MAF / MOBIL EAL Arctic 22 CC
Circuit reversal
IP14B
mm
mm
mm
mm
mm
mm
1822
1434
800
1280
1390
1390
kg
260
hPa
hPa
hPa
m³/h
m³/h
m³/h
m³/h
1.0
190
0.8
1.4
1.4
2.17
3500
Guarantee
The guarantee conditions of our German companies do not
apply to appliances acquired outside of Germany. In countries
where our subsidiaries sell our products a guarantee can only
be issued by those subsidiaries. Such guarantee is only granted if the subsidiary has issued its own terms of guarantee. No
other guarantee will be granted.
We shall not provide any guarantee for appliances acquired in
countries where we have no subsidiary to sell our products.
This will not affect warranties issued by any importers.
Guarantee
Environment and recycling
The guarantee conditions of our German companies do not
apply to appliances acquired outside of Germany. In countries
where our subsidiaries sell our products a guarantee can only
be issued by those subsidiaries. Such guarantee is only granted if the subsidiary has issued its own terms of guarantee. No
other guarantee will be granted.
We would ask you to help protect the environment. After use,
dispose of the various materials in accordance with national
regulations.
We shall not provide any guarantee for appliances acquired in
countries where we have no subsidiary to sell our products.
This will not affect warranties issued by any importers.
Environment and recycling
www.stiebel-eltron.com
We would ask you to help protect the environment. After use,
KYOTO | R407C
This device is filled with refrigerant R407C.
Refrigerant R407C is a CFC greenhouse gas mentioned in the Kyoto
protocol with a global greenhouse potential (GWP) = 1653.
Never release refrigerant R407C to atmosphere.
WPL 33 | 31
Deutschland
STIEBEL ELTRON GmbH & Co. KG
Dr.-Stiebel-Straße 33 | 37603 Holzminden
Tel. 05531 702-0 | Fax 05531 702-480
info@stiebel-eltron.de
www.stiebel-eltron.de
Verkauf
Tel. 05531 702-110 | Fax 05531 702-95108 | info-center@stiebel-eltron.de
Kundendienst
Tel. 05531 702-111 | Fax 05531 702-95890 | kundendienst@stiebel-eltron.de
Ersatzteilverkauf Tel. 05531 702-120 | Fax 05531 702-95335 | ersatzteile@stiebel-eltron.de
Australia
STIEBEL ELTRON Australia Pty. Ltd.
6 Prohasky Street | Port Melbourne VIC 3207
Tel. 03 9645-1833 | Fax 03 9645-4366
info@stiebel.com.au
www.stiebel.com.au
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
China
STIEBEL ELTRON (Guangzhou) Electric
Appliance Co., Ltd.
Rm 102, F1, Yingbin-Yihao Mansion, No. 1
Yingbin Road
Panyu District | 511431 Guangzhou
Tel. 020 39162209 | Fax 020 39162203
info@stiebeleltron.cn
www.stiebeleltron.cn
Czech Republic
STIEBEL ELTRON spol. s r.o.
K Hájům 946 | 155 00 Praha 5 - Stodůlky
Tel. 251116-111 | Fax 235512-122
info@stiebel-eltron.cz
www.stiebel-eltron.cz
Finland
STIEBEL ELTRON OY
Kapinakuja 1 | 04600 Mäntsälä
Tel. 020 720-9988
info@stiebel-eltron.fi
www.stiebel-eltron.fi
France
STIEBEL ELTRON SAS
7-9, rue des Selliers
B.P 85107 | 57073 Metz-Cédex 3
Tel. 0387 7438-88 | Fax 0387 7468-26
info@stiebel-eltron.fr
www.stiebel-eltron.fr
Hungary
STIEBEL ELTRON Kft.
Gyár u. 2 | 2040 Budaörs
Tel. 01 250-6055 | Fax 01 368-8097
info@stiebel-eltron.hu
www.stiebel-eltron.hu
Japan
NIHON STIEBEL Co. Ltd.
Kowa Kawasaki Nishiguchi Building 8F
66-2 Horikawa-Cho
Saiwai-Ku | 212-0013 Kawasaki
Tel. 044 540-3200 | Fax 044 540-3210
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
info@stiebel-eltron.nl
www.stiebel-eltron.nl
Poland
STIEBEL ELTRON Polska Sp. z O.O.
ul. Działkowa 2 | 02-234 Warszawa
Tel. 022 60920-30 | Fax 022 60920-29
biuro@stiebel-eltron.pl
www.stiebel-eltron.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
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 9046
A 264758-39064-9071
B 248524-39064-9071
4<AMHCMN=gehfif>
Slovakia
TATRAMAT - ohrievače vody s.r.o.
Hlavná 1 | 058 01 Poprad
Tel. 052 7127-125 | Fax 052 7127-148
info@stiebel-eltron.sk
www.stiebel-eltron.sk
Switzerland
STIEBEL ELTRON AG
Industrie West
Gass 8 | 5242 Lupfig
Tel. 056 4640-500 | Fax 056 4640-501
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
United States of America
STIEBEL ELTRON, Inc.
17 West Street | 01088 West Hatfield MA
Tel. 0413 247-3380 | Fax 0413 247-3369
info@stiebel-eltron-usa.com
www.stiebel-eltron-usa.com
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