269375-34343-8171 WPL 10 AI-IK (GB).indd

WPL 10 A, WPL 10 I, WPL 10 IK
WPL 7 AS, WPL 7 IKS, WPL 10 AS, WPL 10 IKS
Compact air/water heat pump
installation instructions
The installation (water and electrical work) and commissioning, as well as the maintenance of
this equipment, must only be carried out by an authorised qualified contractor in accordance
with these instructions.
Page
1 General information
2
1.1
1.2
1.3
1.4
1.5
1.6
Equipment description
Function
Correct operation
Incorrect operation
Regulations and standards
Standard delivery and accessories
2
2
2
2
2
2
2
Specification
3
2.1
2.2
2.3
2.4
Specification triplephase
Performance diagram triplephase
Specification singlephase
Performance diagram singlephase
3
4
5
6
3
Installation, connection and
sound emissions
7
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
Transport
Installation location
Heating water connection Circulation pump
Condensate drain
Buffer cylinder
Second heat source
Casing components
Installing the air hoses
7
7
7
9
10
10
12
12
12
4
Electrical connection
13
5
Commissioning
22
6
Operation and control
22
7
Maintenance and cleaning
22
8
Troubleshooting
23
Guarantee
23
Environment and recycling
23
Initial startup protocol
24
Information for the owner of the heat
pump heating system
Keep these operating instructions safely and
pass them on to any new user, should the
equipment change hands. Let your contractor
check their content in conjunction with any
maintenance or repair work.
269375
26_03_01_0295
Content
Installation instructions for contractors
1 General information
Special features for the WPL....IK / IKS
These installation instructions are for
contractors. The heat pump installation also
requires the operating instructions of the heat
pump manager WPM II.
The WPL....IK/IKS includes the heat pump
manager WPM II as standard. It also includes
an integral central heating circulation pump,
an expansion vessel and a three-way valve
for changing over between DHW and central
heating. Also, the air hoses with suitable fixing
material are included in the standard delivery.
The heating system heat pumps and the WPM
II represent one function unit. Consequently,
their instructions are matched to each other.
Subject to the relevant system,
observe the installation instructions of
the components of which the system
comprises.
1.1 Equipment description

For fully automatic heating of heating water
to a flow temperature of 60 °C.

Suitable for underfloor heating and
radiator heating systems; preferred are
low temperature heating systems, as these
achieve higher performance factors.

Extracts energy from the ambient air
(outside) even at outside temperatures as
low as -20 °C outside temperature and 50 °C flow temperature.

Comprises all components required for its
function and all safety equipment.
1.3 Correct operation
The heat pump is designed for extracting
heating energy from the air and for utilising
this energy in water-based heating systems
within the stated operating temperature
range.
1.4 Incorrect operation
The installation location must be prepared by
your contractor in line with section 3.2. Never
operate the heat pump in areas at risk from
explosions or outside the stated operating
temperature range.
1.5 Regulations and standards
Observe the following regulations and
standards during assembly and installation.
On the water side:

Central control of the heating system and
safety functions through the WPM II heat
pump manager (required accessory, part no.
see section 1.6).
DIN 4751 sh. 1 and 2.
Safety equipment for hot water heating
systems

Corrosion-protected, external casing made
from hot-dipped galvanised sheet steel plus
stove enamelled finish.
1.6 Standard delivery and accessories

Compact design, therefore modest space
requirements for interior or exterior
installations.

Test symbol of independent test bodies
(see type plate).

Filled with non-combustible safety
refrigerant R407C.
1.2 Function
Heat is extracted from the outside air at
temperatures ranging from + 30 °C to -20 °C by the heat exchanger on the air side
(evaporator). Heating water is heated to flow
temperature levels in the heat exchanger
on the water side (condenser) by this
extracted heat and additional heat from the
electrical power used by the compressor.
At air temperatures below approx. +7 °C,
the humidity in the air condenses as hoarfrost on the evaporator fins. This hoar-frost is
automatically defrosted. Any water created
from this defrosting is caught in the defrost
basin and drained off via a hose (Fig. 7 and 8).
The fan is switched OFF and the
heat pump circuit is reversed to
activate the defrost cycle. The energy
required for defrosting is drawn from the
heating system.
The heat pump automatically reverts to
heating mode at the end of the defrost cycle.
DIN 1988: Technical rules for DHW
installations
TRD 721: Safety equipment to prevent excess
pressure - safety valves
On the electrical side:
DIN VDE 0100: Regulations for the installation
of HV systems with rated voltages up to 1000 V.
VDE 0701: Regulations regarding the repair,
modification and testing of used electrical
equipment.
TAB: Technical connection conditions for
connections to the LV mains.
On the refrigerant side:
EN 378: Safety and environmental
requirements
DIN 7003: (draft)
General:
Collation of technical requirements for boiler
rooms, e.g. boiler room guidelines or national/
local Building Regulations, commercial and fire
as well as emission control regulations and
requirements
TA Lärm: Technical instructions to protect
against noise emissions
Standard delivery IK version
– Standard unit WPL 10
– Standard unit WPL 7
– Accessories (2 x air hose with fixing materials)
Accessories – internal installation
Wall outlet with external wall grille
Air hose with thermal insulation, 4 m
Hose connection plate
Condensate pump PK9
Accessories – external and internal installations
Cylinder SBP 200 E
22 08 10
22 20 47
22 08 25
16 65 19
16 80 84
16 71 20
18 21 38
18 54 58
Cylinder SBP 400 E
Cylinder SBP 700 E
22 08 24
18 54 59
Heat pump manager with wall mounting enclosure, WPMW II
Heat pump manager as control panel mounted version, WPMS II
Mixer module with wall mounting enclosure, MSMW
Mixer module as control panel mounted version, MSMS
Pressure hose G 1¼” x 1 m (DN25)
Pressure hose G 1¼” x 2 m (DN25)
Pressure hose G 1¼” x 5 m (DN25)
Pressure hose G 1¼” x 10 m (DN25)
Pressure hose G 1¼” x 1 m (DN25) (to be trimmed to size)
18 54 50
18 54 51
07 45 19
07 45 18
07 44 15
07 44 16
07 44 17
07 44 18
18 56 46
Hose fittings for pressure hose G 1¼” (DN25)
Heat pump compact installation set WPKI 5
UP kit 25 - 60 (for WPKI 5)
UP kit 25 - 80 (for WPKI 5)
Heating system remote control FE 7
Contact sensor AVF 6
Immersion sensor TF 6
00 37 13
22 08 30
07 43 25
07 43 16
18 55 79
16 53 41
16 53 42
2 Specification (check details on the type plate)
2.1 Specification triplephase(equipment information)
WPL 10 A
22 08 12
WPL 10 I
22 08 11
WPL 10 IK
22 08 26
Design and operating mode
compact
compact
compact
Design: compact / split / open version
mono-mode
altn. dual-mode
parallel dual-mode
mono-mode
altn. dual-mode
parallel dual-mode
mono-mode
altn. dual-mode
parallel dual-mode
1122 x 967 x 1245
182
856 x 758 x 1010
166
925 x 778 x 1668
212
R 407C
R 407C
R 407C
2.7
2.7
2.7
G 1¼” (male)
22 plug-in conn.
22 plug-in conn.
152 x 407 oval
hose Ø 315
Heat pump
Part no.
Type
Dimensions, weights, connection dimensions
Dimensions
Weight
L/W/H
Refrigerant
mm
kg
Type
kg
Fill weight
“/mm
Pipe connector – heating side (flow and return)
Air hose connector (inlet and outlet connector)
Expansion vessel
L/W
volume
primary pressurek
mm
l
MPa (bar)
12
0.15 (1.5)
Output
Heat output
at A–7/W35 1)
at A2/W35 2)
kW
kW
5.4
6.7
5.4
6.7
5.4
6.7
Power consumption
at A–7/W35 1)
at A2/W35 2)
kW
kW
1.8
2.1
1.8
2.1
1.8
2.1
Performance factor
at A–7/W35 1)
at A2/W35 2)
2.9
3.3
2.9
3.3
2.9
3.3
8.8
8.8
8.8
kW
Power consumption – booster heater
Process medium
Volume flow, hot side WNA nominal / min 4)
Internal pressure differential
Volume flow, cold side WQA min 3
3)
Externally available static pressure differential (only for internal version)
m³/h
1.4 /0.5
1.4 / 0.5
1.4 / 0.5
hPa
195
195
195
m³/h
1200
1200
1200
1,0
1,0
hPa
Operating temperature limits
WQA min. / WQA max 3)
°C
– 20 (– 10) / + 30
– 20 (– 10) / + 30
– 20 (– 10) / + 30
WNA min. / WNA max 4)
°C
+ 15 / + 50 (+ 60)
+ 15 / + 50 (+ 60)
+ 15 / + 50 (+ 60)
16 gl
16 gl
16 gl
16 gl
16 gl
16 gl
16 gl
16 gl
16 gl
IP 14 B
IP 20
IP 20
Electrical specification
Fuses:
Heat pump power supply (compressor)
Supply – booster heater DHC (internal HS 2)
Control circuit
A
A
A
Protection EN 60529 (DIN VDE 0470)
Voltage / frequency – compressor
V/Hz
3/N/PE~400/50
3/N/PE~400/50
3/N/PE~400/50
Voltage / frequency – booster heater DHC (internal HS 2)
V/Hz
3/N/PE~400/50
3/N/PE~400/50
3/N/PE~400/50
Voltage / frequency – control circuit
V/Hz
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
< 25
< 25
< 25
Time/demand/manual defrost
demand / manual
demand / manual
demand / manual
Type of defrost: hot gas/electric/air/flow reversal
flow reversal
flow reversal
flow reversal
Heating the drip pan
yes, supercooler
yes, supercooler
yes, supercooler
yes
yes
yes
Corrosion protection – frame and casing
hot-dipped galv.
hot-dipped galv.
hot-dipped galv.
Compliant with safety regulations
DIN EN 60335; DIN 8975,
EMC Directive 89/336/EEC,
Low Voltage Directive 73/23/EEC
A
Starting current
Defrost
Other model characteristics
yes/no
Frost protection measures
Sound power level to DIN EN 255
External installation Internal installation;
internal / external
Sound pressure level at 5 m
3)
4)
1)
2)
A–7/W35
A2/W35
WQA
WNA
dB(A)
dB(A)
dB(A)
65
–
43
–
57/62
35/41
–
57/62
35/41
=Air inlet temperature: -7 °C, heating flow: 35 °C
= Air inlet temperature: 2 °C, heating flow: 35 °C
= Heat source system (cold side)
= Heat utilisation system (hot side)
2.2 Output diagram for heat pump WPL 10 A / I / IK, WPL 10 AS / IKS
Fig. 1a
Inlet temperature of the WQA - medium
26_03_01_01_0304_a
Perf. factor
Power consumption
Heat output
Flow temp. 35 °C full load
Flow temp. 55 °C full load
Flow temp. 60 °C full load
2.3 Specification singlephase (equipment information)
Heat pump
Part no.
Type
Design and operating mode
WPL 7 AS
22 20 49
WPL 7 IKS
22 21 38
WPL 10 AS
22 20 48
WPL 10 IKS
22 21 37
compact
compact
compact
compact
mono-mode
altn. dual-mode
parallel dual-mode
Design: compact / split / open version
Dimensions, weights, connection dimensions
Dimensions
Weight
L/W/H
Refrigerant
mm
kg
Type
kg
Fill weight
“/mm
Pipe connector – heating side (flow and return)
Air hose connector (inlet and outlet connector)
Expansion vessel
L/W
volume
primary pressure
1122x967x1245
182
925x778x1668
212
1122x967x1245
182
925x778x1668
212
R 407C
R 407C
R 407C
R 407C
2.7
2.7
2.7
2.7
22 plug-in conn.
G 1¼” (male)
22 plug-in conn
G 1¼” (male)
mm
l
MPa (bar)
hose Ø 315
hose Ø 315
12
0.15 (1.5)
12
0.15 (1.5)
Output
Heat output
at A–7/W35 1)
at A2/W35 2)
kW
kW
3.2
4.9
3.2
4.9
5.4
6.7
5.4
6.7
Power consumption
at A–7/W35 1)
at A2/W35 2)
kW
kW
1.2
1.5
1.2
1.5
1.8
2.1
1.8
2.1
Performance factor
at A–7/W35 1)
at A2/W35 2)
2.6
3.3
2.6
3.3
2.9
2.3
2.9
2.3
6.2
6.2
6.2
6.2
Power consumption – booster heater
kW
Process medium
Volume flow, hot side WNA nominal / min 4)
Internal pressure differential
Volume flow, cold side WQA min 3 3)
Externally available static pressure differential (only for internal
version)
m³/h
1.07 / 0.4
1.07 / 0.4
1.04 / 0.5
1.04 / 0.5
hPa
110
110
110
110
m³/h
1200
1200
1200
1200
–
1,0
–
1.0
hPa
Operating temperature limits
WQA min. / WQA max 3)
°C
–20 (–10) [0] / +30
–20 (–10) / +30
WNA min. / WNA max
°C
+15 / +50 (+50) [+60]
+15 / +50 (+60)
4)
Electrical specification
Fuses:
Heat pump power supply (compressor)
Supply – booster heater DHC (internal HS 2)
Control circuit
A
A
A
Protection EN 60529 (DIN VDE 0470)
20 gl
35 gl
16 gl
20 gl
35 gl
16 gl
20 gl
35 gl
16 gl
20 gl
35 gl
16 gl
IP 14 B
IP 20
IP 14 B
IP 20
Voltage / frequency – compressor
V/Hz
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
Voltage / frequency – booster heater DHC (internal HS 2)
V/Hz
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
Voltage / frequency – control circuit
V/Hz
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
< 35
< 35
< 43
< 43
A
Starting current
Defrost
Time/demand/manual defrost
demand / manual
Type of defrost: hot gas/electric/air/flow reversal
flow reversal
Heating the drip pan
yes, supercooler
Other model characteristics
yes/no
Frost protection measures
yes
Corrosion protection – frame and casing
hot-dipped galv.
Compliant with safety regulations
Sound power level to DIN
EN 255
DIN EN 60335; DIN 8975,
EMC Directive 89/336/EEC,
Low Voltage Directive 73/23/EEC
External installation Internal installation;
internal / external
dB(A)
dB(A)
dB(A)
65
–
43
–
57/62
35/41
65
–
43
–
57/62
35/41
Sound pressure level at 5 m
3)
4)
1)
2)
A–7/W35
A2/W35
WQA
WNA
=Air inlet temperature: -7 °C, heating flow: 35 °C
= Air inlet temperature: 2 °C, heating flow: 35 °C
= Heat source system (cold side)
= Heat utilisation system (hot side)
2.4 Output diagram for heat pump WPL 7 AS / IKS
Fig. 1b
Inlet temperature of the WQA - medium
26_03_01_01_0646
Perf. factor
Power consumption
Heat output
1 = Flow temp. 35 °C full load
2 = Flow temp. 45 °C full load
3 = Flow temp. 55 °C full load
4 = Flow temp. 60 °C full load
3 Installation, connection and
sound emissions
Where the heat pump is installed on strip
foundations, seal off the open sides of the
foundation.
3.1 Transport
3.2.2 Internal installation
To protect the equipment against damage,
it must be transported vertically inside its
packaging.
Short tipping to one of its longitudinal sides
is permissible. With the WPL....IK / IKS ensure
that the control fascia is at the top during
transport.
Lifting slings for handling the standard machine
can be hooked up anywhere on the lower
frame.
Protect the heat pump against severe impact.
3.2 Installation location
3.2.1 External installation (WPL....A / AS)
1. Undo the four screws from the nonreturnable pallet.
2. Remove the washers.
3. Remove the equipment from its pallet and
position it where required.
Recommended surfaces:
 Foundation (Fig. 5)
 Kerb stones (Fig. 6)
 Stone slab
Provide a recess (space) underneath the heat
pump to enable water and electrical pipes/
cables to be connected from below (Fig. 5 and 9).
Ensure a minimum wall clearance on the air
outlet side of 2 m.
The heat pump must be accessible from all
sides. With external installations, water and
electrical pipes/cables can be routed into
the heat pump from below, i.e. through the
knock-outs in the floor of the refrigeration
drive (Fig. 9).
Noise emissions for external installations
At the air inlet and air outlet sides, the heat
pump is louder than on the enclosed sides.
Therefore point these two sides away from
noise sensitive rooms of the house (e.g. bedrooms).
The air inlet direction should be, where
practicable, in line with the main wind
direction, in other words, air should not be
drawn in against the wind.
Lawn areas and shrubs can contribute to the
reduction of noise. Noise can also be reduced
through dense palisades or similar.
Avoid installation on large echoing floor areas
(e.g. those covered with tiles) as well as in
between reflective building walls, both of
which could raise the sound level.
Ensure that noise cannot be emitted through
the floor plate of the heat pump or through
the installation aperture.
The WPL....I and WPL....IK heat
pumps are designed for internal
installation, except in wet areas.
1. Undo the four screws from the nonreturnable pallet..
2. Remove the washers.
3. Before removing the equipment from the
pallet, remove the equipment feet (1) in
Fig. 7 from the pack and insert fully into
the equipment.
4. Remove the equipment from its pallet and
position it where required. Use the sliding
shoes included in the pack to better
position the equipment (2).
5. Level the equipment by adjusting the
equipment feet.
The room in which the equipment is to be
installed must meet the following conditions:
No risk from frost.
Floor load-bearing strength (for the
equipment weight, see specification).
Level, even and firm base.
For a quiet heat pump operation on
floating screeds, remove the screed and
the anti-vibration insulation around the
installation location of the heat pump (Fig. 8).
The room must not be subject to a risk
of explosions arising from dust, gases or
vapours.
The floor area of the installation room
must be at least 3 m², and the room must
provide a volume of 6 m³ (minimum).
When installing the heat pump in a
boiler room together with other heating
equipment ensure, that the operation
of other heating equipment will not be
impaired.
For internal installations, route the electrical
cables from the top into the heat pump see item 4 in Fig. 10 and 11).
Cut out the inlets according to the cable Ø.
Noise emissions for internal installations
Never install the heat pump immediately
below or adjacent to living rooms or
bedrooms.
Never install the heat pump on timber floors
which form the ceiling below.
Recess floating screeds as shown in (Fig. 8).
Protect all pipe fixings and wall transitions with
anti-vibration insulation.
Never direct the air inlet and outlet apertures
in external walls towards neighbouring
windows or living rooms/bedrooms.
The sound power level for internal
installations is:
inside the installation location
57 dB(A)
at the air inlet and outlet apertures
62 dB(A)
3.3 Heating water connection
3.3.1 The heat pump heating system must
be installed by a qualified contractor in
accordance with the water installation
drawings, which are part of the design
documents.
With regard to the safety equipment of the
heating system, observe DIN 4751 sheet 1
and 2 plus TRD 721 safety equipment [or
local regulations]. In dual-mode operation, the
return water of the second heat source can
flow through the heat pump. The return water
temperature may be a max. of 60 °C.
3.3.2 Protection of heating water pipes
against frost and moisture
(only for external installations)
Protect the flow and return pipes in external
installations against frost by means of
adequate thermal insulation, and by routing
them inside conduit against moisture (Fig. 9).
Maintain the required insulation thickness
in accordance with the Heating System
Order [or local regulations].The integral frost
protection control (inside the heat pump),
which automatically starts the circulation
pump in the heat pump circuit at + 8 °C
and thereby safeguards circulation in all
water-bearing components, offers additional
frost protection. The heat pump is started
automatically no later than when the
temperature inside the buffer cylinder drops
below + 5 °C.
3.3.3 Flow and return connections
Connect the heating water side of the heat
pump in accordance with Fig. 9 (external
installation) or Fig. 10 and 11 (internal
installation). Check for leaks.
For internal installations, connect the antivibration mounts supplied with the WPL 10 I.
Anti-vibration mounts are already integrated
into the WPL....IK / IKS.
Structure-borne noise is substantially
prevented by the anti-vibration construction
of the heat pump and by the flexible pressure
hoses, which act as anti-vibration mounts.
Make the heating flow and return connections
for the WPL....I using the flexible pressure
hoses supplied.
Anti-vibration mounts are already integrated
into the WPL....IK / IKS.
The machine emits 65 dB(A) (noise power
level) when installed externally.
Internal installation
External installation
Air inlet
74
Air inlet
855
1215
min 22,2 - max 40
Air outlet
Air outlet
Ø22 x1
1122
905
967
712
790
758
700
255
26_03_01_0298
152
278
152
279
84
300
856
143
758
856
255
152
790
26_03_01_0296
712
connection plate
HoseSchlauchanschlussplatte
120
237
Fig. 2
Fig. 3
Internal installation
max 800
1557
758
856
51
279
74
26_03_01_0299
855
min 22,2 - max 40
1366 ± 50
Fig. 4
400
790
383
120
237
293
360
712
Air outlet
Air inlet
1366 ± 50
min 300
1816
8
81
Ø 22 x1
3.3.4 Flushing the heating system
Thoroughly flush the pipework before
connecting the heat pump. Debris, such as
welding pearls, rust, sand, sealant etc. can
impair the operational reliability of the heat
pump, and can lead to a blocking of the
condenser.
Foundation for external installation when using pressure hoses
wind direction
Main
Hauptwindrichtung
340
90
Air
inlet side
Lufteintrittseite
26_03_01_0302
760
Air
outlet side
Luftaustrittseite
200
50
860
Dimensions in mm
Fig. 5
Kerb stones for external installation
wind direction
Main
Hauptwindrichtung
When filling the heating system with heating
water, observe VDI 2035, sheet 1 [or local
regulations]. Particularly ensure that
 during the service life of the system, the
total fill and top-up water must not exceed
three times the nominal content of the
heating system,
 the total alkaline earths in the water must
be < 3.0 mol/m³,
 the total water hardness must be < 3
mmol/l
 the water must be softened, if the above
requirements are not met.
Generally soften the heating water if the specific system content is > 20 l/kW output (e.g.
in case of system with buffer cylinder).“
3.3.5 Venting the heating system
Air pockets in the system are detrimental to
the heat pump function.Vent the pipework
thoroughly. For this, also activate the air vent
valve integrated into the heating flow.
Dimensions in mm
26_03_01_303
Air
inlet side
Lufteintrittseite
660
Air
outlet side
Luftaustrittseite
680
Fig. 6
Recess the screed and the
impact sound insulation.
3.3.6 Oxygen diffusion
Steel components, such as radiators and
pipes, can corrode if plastic underfloor heating
system pipes, which are permeable to oxygen,
are used.
The product of corrosion, i.e. rusty sludge,
can settle inside the heat pump condenser
and can result in a lower output through
reduction of cross-section or in a shutdown
being activated by the high pressure limiter.
Therefore it is advisable to avoid open heating
systems or the installation of steel pipes in
conjunction with plastic pipes in underfloor
heating systems, which are not impermeable
to oxygen.
26_03_01_301
1 2
1 Equipment foot
2 Sliding shoe
Fig. 7
1
2
1 Impact sound insulation
2 Floating screed
26_03_01_300
3.4 Circulation pump
Circulation pump in the heat pump circuit
(buffer cylinder primary pump)
Determine the pressure drop for the
interconnecting line between the WPKI 5 and
the heat pump, if you are using the cylinders
SBP 200 or SBP 700 (buffer cylinder) and the
heat pump compact installation set WPKI 5
(see table in the next column).
The total pressure drop is the sum of the
pressure drop values for the interconnecting
line, the heat pump and the WPKI 5. Base the
sizing of the circulation pump on the nominal
volume flow and the total pressure drop.
Fig. 8
Heat meter
For the installation of a heat meter observe,
that most heat meters cause a substantial
pressure drop; therefore size the circulation
pump larger.
Heat pump
Nominal volume flow
WPL 7 WPL 10
m³/h
1.07
110
1.4
Pressure drop
Heat pump
hPa
SBP 700 + WPKI 5
hPa
55
195
Pressure hose 1¼”
hPa/m
3
6
2
5
3
For external installation
In case of external installation, route this hose
– after removing the knock-out, downwards
out of the equipment (Fig. 7).
For internal installation
For internal installations route the defrost
water into a public sewer.
For this, the condensate drain hose can be
routed through the opening in the floor plate
and frame, and by removing the knock-out in
the bottom of the side panel to the right out
of the equipment (Fig. 10 and 11).
Ensure that the condensate drain
hose is not kinked anywhere over
its entire length and is routed with a slope.
Check after routing the hose that the
condensate drains correctly. For this, slowly
pour approx. 10 l water into the defrost pan.
The water must completely drain out of the
defrost pan.
Use a condensate pump if there is insufficient
fall.
Maximum condensate drain volume:
6 l/min.
Install the heat pump approx. 100 mm higher,
if the condensate pump PK 9 (for part no.,
see section 1.6) is used for draining the
condensate.
180
At the factory, a 3/4“ hose is fitted to the
defrost pan as condensate drain hose, which
terminates near the knock-out in the bottom
plate to the right of the refrigeration drive.
10
1 Condensate drain hose
2 Pressure hose connection (heating flow)
3 Pressure hose connection (heating return)
4 Connecting cables
9 1
5 Cable duct for connecting cables
6 Control panel with strain reliefs for connecting cables
7 Thermal insulation for flow and return pipes
8 Installation conduit for connecting cables and flow and return pipes
9 Coarse gravel back filling
10Concrete foundation
7
8
7
26_03_01_0305
3.5 Condensate drain
4
Fig. 9
5
1 Condensate drain hose
optionally on the r.h. or l.h. front
2 Connection heating flow
3 Connection heating return
4 Cable entries for connecting
cables
5 Control panel with strain reliefs
for connecting cables
6 Safety equipment
3.6 Buffer cylinder
3.6.1 Installation with a buffer cylinder
200+20
A buffer cylinder is recommended to ensure
a trouble-free heat pump operation. The
buffer cylinder (cylinder SBP) is not only
installed as hydraulic separator for volume
flow in the heat pump circuit and the heating
circuit, but primarily as energy source for
defrosting the evaporator.
2
3
1
6
Fig. 10
10
26_03_01_306
4
3.6.2 Installation without a buffer cylinder
When using no buffer cylinder,
set the parameter 10 (B-PUMP
CONST) to ON.
Minimum volume flow
Stiebel Eltron recommends that one or
several heating circuits in the heating system
are left open. The open heating circuit(s)
should be installed in the lead room (living
room or bathroom). The single room control
can then be achieved with the help of the FE 7 remote control. The remaining rooms can
then be equipped with zone or thermostatic
valves. As an alternative, an overflow valve can
be set into the last heating circuit distributor. In any case ensure a minimum volume flow of
0.4 m³/h.
5
Overflow valve adjustment:
Make the adjustment in accordance with the
following table:
200+20
Pump head
Required residual
head at the
overflow valve*
6m
4.5 m
7m
5.5 m
8m
6m
*relative to commercially available Wilo and
Grundfos pumps
1
3
4
6
7
1
2
3
4
5
6
7
Fig. 11
Condensate drain hose optionally on the r.h. or l.h. front
Connection heating flow
Connection heating return
Cable entries for connecting cables
Control panel with strain reliefs for connecting cables
Safety equipment
Flow DHW cylinder
Flow sensor connection
26_03_01_0307
2
When using the WPL....A and the WPL.... I,
connect the flow sensor B1, which is an
integral part of the heat pump, to the WPM II.
Heating curve adjustment
Adjust the heating curve carefully, as the
heat pump efficiency will be reduced with an
increasing flow temperature. Heating curves,
which are adjusted too high, lead to the zone
and thermostatic valves closing, which may
lead to the minimum flow rate required for
the heat pump not being achieved.
Procedure for selecting the correct heating
curve:
Fully open the thermostatic valve(s) or zone
valve(s) in the lead room, e.g. in the living
room or bathroom (remove the head of
thermostatic valves) and match the heating
curve at different outside temperatures (e.g.
– 10 °C and + 10 °C), so that the required
temperature results in the lead room. The
thermostatic valve(s) or zone valve(s) in
the lead room should always be fully open
(Stiebel Eltron recommends, that the heating
circuit of the lead room is installed without
thermostatic or zone valves, and to achieve
the individual room control via a remote
control unit).
11
Standard values for an initial start:
Parameter
Underfloor
heating
system
Heating curve
Controller
dynamics
Room temp.
3.9 Installing the air hoses
Heating
system
with
radiators
0.4
0.8
5
15
20 °C
20 °C
Match the heating curve as follows:Increase
the room temperature parameter, if the room
temperature in spring and autumn is too
low (approx. 10 °C outside temperature).
Providing no remote control is installed, this
will lead to a parallel offset of the heating
curve. Increase the heating curve parameter,
if the room temperature is not high enough
when outside temperatures are low. Then
adjust the zone valve or thermostatic valve to
the required temperature.
Never reduce the temperature in the entire
building by closing all zone or thermostatic
valves, but by using the setback programs.
DHC heater connection
The second heat source (DHC heater), which
is integrated into the heat pump, must be
connected.
For optimum function of the WPL 10 A/I/IK
connect all three stages (8.8 kW) and for
optimum function of the WPL 7 AS/IKS
connect two stages (6.2 kW).
Other WPM II adjustments
Activate the constant buffer primary pump
operation at the WPM II, and connect the
heating circuit pump to the buffer primary
cylinder pump terminal.
3.7 Heat source 2
For dual-mode systems, always connect the
heat pump into the return of the second heat
source (e.g. oil fired boiler).
3.8 Removing the casing parts
The side panels, the front and back panels are
hooked into the heat pump frame and are
secured at the centre (bottom) of each panel
respectively with one quick-acting screw. After
removing the quick-acting screw, the casing
panels can be pushed up and can be removed.
With the WPL....IK / IKS, only the lower casing
panels can be removed.
12
3.9.1 WPL....I
Air hoses guide the inlet air from the outside
to the heat pump and route the extract air
from the heat pump to the outdoors. These
hoses are highly flexible, thermally insulated
and are self-extinguishing in case of fire in
accordance with ASTMD 1692-67 T.
Thermally insulated air hoses are available in
lengths of 4 m (for part no., see section 1.6).
Information regarding routing the air hoses
Use a sharp knife for trimming the hoses to
size; use a wire cutter for cutting through the
Bowden core.
Hoses can be extended by turning the
Bowden cores into each other (approx. 30 cm).
The total length of hoses on the air inlet and
outlet side must not exceed 8 m.
Install no more than four 90° bends with a
radius of at least 600 mm, relative to the hose
centre line.
The air hoses will tend to sag because of
their flexibility; therefore support their length
approx. every 1 m.
Fitting the air hoses to the WPL....I and the
outside wall of the building
Match the air hose ends to the shape of the
oval connectors at the cover and the hose
connection plates. Hose connection plates are
available as accessory (part no. see section 1.6).
Initially withdraw the internal hoses slightly,
push over the connectors and seal with
adhesive tape (supplied with the cover). Then
pull the exterior hoses forward, and secure
them well with the oval hose clips, which are
also supplied with the cover (see Fig. 3).
Always cover the air inlet and outlet
apertures with wire grilles, and
secure the hoses against slippage.
3.9.2 WPL....IK / IKS and securing the air
hoses at the outside wall of the building
Secure the ready-made air hoses with the
wing nuts (M5) contained in the pack to the
heat pump (see Fig. 4).
Subject to wall structure, use suitable rawl
plugs and screws to fix the wall mounted
connecting plates.
4 Electrical connection
The IWS (abbreviation for integrated heat
pump control) is a PCB fitted as standard into the heat pump control panel. The IWS
controls the contactors of the compressors
and the starting current limiter, receives the
signal inputs for high pressure, low pressure
and central faults and contains the BUS
interface to the WPM II.
Notify your local power supply company of
the electrical connection. Only qualified electricians must carry out
the installation in accordance with these
instructions.
Before any work, isolate the
equipment from the power supply
at the control panel.
WPM II
Observe VDE 0100 and the regulations of your
local power supply company.
The heat pump must be able to be separated
from the mains power supply by an additional
isolator, which disconnects all poles with
at least 3 mm contact separation. For this
purpose, use contactors, mains isolators, fuses,
etc. on site.
Connection WPL....A / AS and WPL....I
The terminals are located inside the WPL
control panel (Fig. 9 and 10) and become
accessible by removing the front panel.
During the installation, the control panel
can be withdrawn from the casing towards
the front. To terminate the cables, pivot the
control panel lid open after removing the
screws fitted to the top and side.
That makes all connecting terminals accessible. For connection, see Fig. 12 and 13.
Connection WPL....IK / IKS
The terminals are located inside the WPL
control panel (Fig. 13) and become accessible
by opening the upper front panel.
Observe the operating instructions
for the heat pump manager WPM II.
Connect the circulation pump for the
heat utilisation side in accordance with the
electrical connection diagram (Fig. 15) or the
design documentation.
Stand alone operation
In emergencies, this heat pump can also
operate without the heat pump manager (see
page 23).
However, under such circumstances the
system is no longer protected against frost,
and the system may ice up.
For external installation
Use only cables suitable for outdoor use to VDE 0100 [or local regulations].
Route such cables through a conduit
(protective pipe); entr y into the heat
pump can be arranged from below (Fig. 9).
Route the electrical cables inside
the heat pump in the cable trunking
provided (Fig. 9, item 5).
For internal installation
Route the cables from the top through the
cable entries (Fig. 10 and 11).
Cut out the entries according to the cable Ø.
2x
26_03_01_0297
After connecting all cables, refit and seal the
cover over the mains terminal (X3) (Fig. 12).
To terminate the cables, pivot the control
panel lid open after removing the screws fitted
to the top and l.h. side.
That makes all connecting terminals accessible. For connection, see Fig. 12 and 14.
Terminal ratings of the electric booster
heater
Mark the box in front to the terminal ratings
on the relevant label below the type plate.
Use appropriate cables in accordance with local regulations for all connections.
Power supply cable (compressor):
Power supply cable (DHC):
WPL....A / I / IK
W....AS / IKS
5x1.5 mm2
3x2.5 mm2
5x2.5
mm2
5x4 mm2
Control cable WPL 10 I / A (Mains):
5x1.5 mm2
Control cable WPL 10 IK (Mains):
3x1.5 mm2
BUS cable:
Flow sensor lead:
J-Y (St) 2x2x0.8 mm2
3x1.5 mm2
Check the strain relief function.
13
Electrical connection
3/N/PE~400/50
WPL 10 IK
1/N/PE~230/50
3/N/PE~400/50
HP
PE
X3
PE
3/N/PE~400/50
X4
PE
X26
(earth)
1/N/PE~230/50
Control
Mains
X3
HP
Mains
X3
Power supply
HP
DHC
Heat pump (compressor)
L1, L2, L3, N, PE
Booster heater
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
Terminal allocation
L1
L2
L3
L1
L1
L1
L2
L2
L2
L3
L3
L3
LV
X4
Provide separate fuses for the three
power circuits heat pump, booster
heater and control.
14
X2
3/N/PE~400/50
HP
Fig. 12
LV
N
C26_03_01_0308
WPL 10 A
WPL 10 I
Control
Mains
N
N
N
N
N
N
N
PE
PE
PE
PE
PE
PE
PE
X2
X4
Control terminals
Mains supply: L, N, PE
Outputs:
KOKP
Collector circuit pump and N, PE
MKP
Mixer circuit pump and N, PE
Pump
Heating circuit 2 and N, PE
M(A)
Mixer OPEN
M(Z)
Mixer CLOSE
HKP
Heating circuit pump and N, PE
HS 2
Heat source 2 and N, PE
ZKP
DHW circulation pump and N, PE
Ext. ST
Stand alone operation
Inputs:
EVU
L´ Power supply company enable signal
X2
LV terminal
Pulse
Pulse input heat meter measurement
B1
Temperature sensor heat pump flow
B2
Temperature sensor heat pump return
Sensor 1
Temp. sensor HP return (heat consumption)
Temp. sensor DHW cylinder (bottom) (for solar connection)
Sensor 2
Temp. sensor HP flow (heat usage)
Temp. sensor collector (for solar connection)
0 — 10 V Analog output and earth
T(WW)
DHW temperature sensor and earth
T(A)
Outside temperature sensor and earth
T(MK)
Mixer circuit temperature sensor and earth
REM CON. 1Remote control 1
REM CON. 3Remote control 3
H
BUS high
L
BUS Low
BUS ground
“ + “
BUS “ + “
A1
A2
B1
B2
E1
F1
F2
F4
F5
P
&
9
P
&
4
&
-
,{ ,
.
Heat pump manager WPM II
Integral heat pump control unit IWS
Temperature sensor heat pump flow
Temperature sensor heat pump return
Instantaneous water heater (DHC)
Low pressure limiter
High pressure limiter
Hot gas temperature limiter
High limit safety cut-out for DHC
.
+
M2
M3
M6
N1
N2
X1
X2
X3
X4
P
.
+
.
!
+
!
,
!
"
+
"
!
+
!
+
!
+
F13
H1
H2
K2
K4
K5
K6
K7
M1
8
8
8
"
!
8
8
.
8
8
8
¼
8
8
Frost protection temperature sensor
Heat pump ON indicator (green)
Defrost ON indicator (blue)
Contactor compressor
Fan contactor
Instantaneous water heater relay
Instantaneous water heater relay
Instantaneous water heater relay
Compressor motor
8
8
8
8
(
,
8
"
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!
8
.
(EISSGAS
($.$
+
+
+
8
+
,
.
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Pump motor
Motorised diverter valve
Fan motor
Defrost end control thermostat
Defrost pressure differential switch
Terminals
LV terminal
Power supply
Control terminals
-
.
,
,
,
.
8
8
8
+/+0
,
&
-+0
(
-A
-Z
P
(
)MPULS
"
"
&àHLER
&àHLER
6
477
47%
4!
4-+
&ERNB
&ERNB
(
,
¼
%65
0UMPE
4
:+0
"
(+0
7%
Wiring diagram WPL 10 IK
4
4
Fig. 13
15
!
8
RT SW GE WS
8
5
7
SW
.
.%4:
,
8
,
$(#
BR
,
:
,
BL
-
+
8
5 5 :
07
Earth block – power supply
LV earth block
Earth plug-in block
Socket terminal strip
Socket plug IWS 12-PIN
Socket plug IWS 3-PIN
Socket plug IWS 5-PIN
Changeover valve - defrost
Run capacitor
6
,
70
,
X23
X26
X27
X28
X29
X30
X33
Y1
Z2
-
+
.
07
07
%
+
+
+
&
4
26_03_01_0235
A2
B1
E1
E2
F1
F2
F4
F5
%
.
F13
K2
K4
K5
K6
K7
M1
M6
4
9
&
P
P
&
8
4
.
+
Integral heat pump control unit IWS
Temperature sensor heat pump flow
Instantaneous water heater (DHC)
Oil sump heater (WPL 10 A)
Low pressure limiter
High pressure limiter
Hot gas temperature limiter
High limit safety cut-out for DHC
P
&
.
P
+
+
!
!
+
"
!
8
!
%XT3TEUER
.
(EISSGAS
($.$
+
+
+
+
,
.
Frost protection temperature sensor
Compressor contactor
Fan contactor
Instantaneous water heater relay
Instantaneous water heater relay
Instantaneous water heater relay
Compressor motor
Fan motor
.
,
,
.
8
"
!
+
(
,
"
!
8
+
N1
N2
N3
X1
X2
X3
X4
X23
8
8
,
8
"US
.
+
4
!
!
8
+
8
"
,
(
"
"
4
Defrost end control thermostat
Defrost pressure differential switch
Oil sump heater thermostat (WPL 10 A)
Terminals
LV terminal
Power supply
Terminals - control
Earth block - power supply
&
7%
Wiring diagram WPL 10 A / I
%XT3TEUER
16
8
,
-
+
.
5
6
7
,
SW
.
Mains
.%4:
X27
X28
X29
X30
X33
Y1
Z3
,
HP
70
BR
8
,
:
BL
-
+
8
5 5 :
07
%
07
07
Earth plug-in block
Socket terminal strip
Socket plug IWS 12-PIN
Socket plug IWS 3-PIN
Socket plug IWS 5-PIN
Changeover valve - defrost
Suppressor
,
$(#
,
+
+
+
&
4
26_03_01_0233
Fig. 14
Electrical connection diagram for heat pumps WPL 10 A and WPL 10 I with heat pump manager WPM II
X2
X3
X1
Solar
Mixer –
Mixer +
HS 2
HS 2
Pump
DHW
Heating circuit 2
Heating circuit 1
Source
Buffer 2
Buffer 1
Pumps L
PSC L’
Mains L
Mains N
Outside temp. sensor
Flow temp. sensor
Return temp. sensor
DHW temp. sensor
HS 2 sensor
Source temp. sensor
Mixer temp. sensor
Analog output
1
FE7
3
BUS H
BUS L
BUS
BUS +
Sensor 1
Sensor 2
Heat pump manager WPM II
X5
X4
FE7
BUS cable
max. 2 A gl
N
PE
L
16 A gl
1/N/PE
~ 50Hz
230 V
Supply from the
domestic meter
Time switch for POWER OFF periods
Control phase L
without off-period
Control phase L`
with off-period
N
L1
L2
L3
3/N/PE ~ 50Hz 400 V
Kleinsp
BUS
B1
B1
Steuerung
(Netz)
H
L
NETZ
DHC
WP
N L2 L2 L3 N L1 L2 L3
L
N
PE
2. WE
PE
X4
PE
3/N/PE
~ 50Hz
400V
Supply from the
heat pump electricity meter
X2
26_03_01_0309_a
X3
N
L3
L2
L1
Fig. 15
17
Electrical connection
1/N/PE~230/50
WPL 7 IKS
WPL 10 IKS
1/N/PE~230/50
HP
PE
Control
Mains
X3
PE
1/N/PE~230/50
X4
PE
X26
(earth)
1/N/PE~230/50
Control
Mains
X3
HP
Mains
X3
Power supply
HP
DHC
Heat pump (compressor)
L, N, PE
Booster heater
L, L’, N, PE
Connected load
3.0 kW
3.2 kW
6.2 kW
Terminal allocation
L
L
L’
L’
N
N
N
LV
X4
Provide separate fuses for the three
power circuits heat pump, booster
heater and control.
18
X2
1/N/PE~230/50
HP
Fig. 16
LV
N
C26_03_01_0308
WPL 7 AS
WPL 10 AS
1/N/PE~230/50
PE
PE
PE
X2
X4
Control terminals
Mains supply: L, N, PE
Outputs:
KOKP
Collector circuit pump and N, PE
MKP
Mixer circuit pump and N, PE
Pump
Heating circuit 2 and N, PE
M(A)
Mixer OPEN
M(Z)
Mixer CLOSE
HKP
Heating circuit pump and N, PE
HS 2
Heat source 2 and N, PE
ZKP
DHW circulation pump and N, PE
Ext. ST
Stand alone operation
Inputs:
EVU
L´ Power supply company enable signal
X2
LV terminal
Pulse
Pulse input heat meter measurement
B1
Temperature sensor heat pump flow
B2
Temperature sensor heat pump return
Sensor 1
Temp. sensor HP return (heat consumption)
Temp. sensor DHW cylinder (bottom) (for solar connection)
Sensor 2
Temp. sensor HP flow (heat usage)
Temp. sensor collector (for solar connection)
0 — 10 V Analog output and earth
T(WW)
DHW temperature sensor and earth
T(A)
Outside temperature sensor and earth
T(MK)
Mixer circuit temperature sensor and earth
REM CON. 1Remote control 1
REM CON. 3Remote control 3
H
BUS high
L
BUS Low
BUS ground
“ + “
BUS “ + “
Fig. 17
19
A1
A2
B1
B2
E1
F1
F2
F4
F5
F13
Heat pump manager WPM II
Integral heat pump control unit IWS
Temperature sensor heat pump flow
Temperature sensor heat pump return
Instantaneous water heater (DHC)
Low pressure limiter
High pressure limiter
Hot gas temperature limiter
High limit safety cut-out for DHC
Frost protection temperature sensor
H1
H2
K2
K4
K5
K6
M1
M2
M3
M6
Wiring diagram WPL 7 IKS, WPL 10 IKS
Heat pump ON indicator (green)
Defrost ON indicator (blue)
Contactor compressor
Fan contactor
Instantaneous water heater relay
Instantaneous water heater relay
Compressor motor
Pump motor
Motorised diverter valve
Fan motor
N1
N2
N4
X1
X2
X3
X4
X23
X26
X27
Defrost end control thermostat
Defrost pressure differential switch
Start-relay
Terminals
LV terminal
Power supply
Control terminals
Earth block – power supply
LV earth block
Earth plug-in block
X28
X29
X30
X33
Y1
Z1
Z2
Z4
Mains
Socket terminal strip
Socket plug IWS 12-PIN
Socket plug IWS 3-PIN
Socket plug IWS 5-PIN
Changeover valve - defrost
Operating condenser, compressor
Operating condenser, fan
Condenser, compressor start
HP
26_03_01_0603
Fig. 18
20
A2
B1
E1
E2
F1
F2
F4
F5
Integral heat pump control unit IWS
Temperature sensor heat pump flow
Instantaneous water heater (DHC)
Oil sump heater (WPL 10 A)
Low pressure limiter
High pressure limiter
Hot gas temperature limiter
High limit safety cut-out for DHC
Wiring diagram WPL 7 AS
F13
K2
K4
K5
K6
M1
M6
N1
Frost protection temperature sensor
Compressor contactor
Fan contactor
Instantaneous water heater relay
Instantaneous water heater relay
Compressor motor
Fan motor
Defrost end control thermostat
N2
N3
N4
X1
X2
X3
X4
X23
Defrost pressure differential switch
Oil sump heater thermostat
Start-relay
Terminals
LV terminal
Power supply
Terminals - control
Earth block - power supply
X27
X28
X29
X30
X33
Y1
Z1
Z2
Z4
Mains
Earth plug-in block
Socket terminal strip
Socket plug IWS 12-PIN
Socket plug IWS 3-PIN
Socket plug IWS 5-PIN
Changeover valve - defrost
Operating condenser, compressor
Operating condenser, fan
Condenser, compressor start
HP
26_03_01_0604
Electrical connection diagram for heat pumps WPL 7 AS, WPL 10 AS with heat pump manager WPM II
X2
X3
X1
Solar
Mixer –
Mixer +
HS 2
HS 2
Pump
DHW
Heating circuit 2
Heating circuit 1
Source
Buffer 2
Buffer 1
Pumps L
PSC L’
Mains L
Mains N
Outside temp. sensor
Flow temp. sensor
Return temp. sensor
DHW temp. sensor
HS 2 sensor
Source temp. sensor
Mixer temp. sensor
Analog output
1
FE7
3
BUS H
BUS L
BUS
BUS +
Sensor 1
Sensor 2
Heat pump manager WPM II
X5
X4
FE7
BUS cable
max. 2 A gl
N
PE
L
16 A gl
1/N/PE
~ 50Hz
230 V
Supply from the
domestic meter
Time switch for POWER OFF periods
Control phase L
without off-period
Control phase L`
with off-period
EVU L’
Kleinsp
BUS
H
L
B1
B1
Steuerung
(Netz)
L
N
PE
2. WE
PE
NETZ
DHC
WP
L N PE L L’ N PE
X4
X2
heat pump PE electricity meter
N
L
PE
1/N/PE
~ 50Hz
230V
26_03_01_0648
X3
N 1/N/PE ~ 50Hz
230V
L Supply from the
Fig. 19
21
5 Commissioning
7 Maintenance and cleaning
See the operating instructions for
the heat pump manager WPM II.
Since the WPL....A / AS, I and IK
/ IKS are heat pumps with internal HS 2,
please observe the WP type 2 when
reading the description of the individual
functions.
Maintenance
WPM II
After commissioning, the installer should
complete the commissioning report on
pages 17 to 19.
6 Operation and control
A WPM II heat pump manager
is required to operate the heat
pump (already an integral part of
the WPL....IK / IKS). It regulates the entire
heating system. and all required adjustments
are made at this control unit.
Please note: The WPL....A / AS, I and IK /
IKS are WP type 2.
WPM II
Only qualified contractors must adjust the
WPM II heat pump manager.
Never interrupt the heat pump
power supply, even outside the
heating season otherwise the system would
not be protected from frost. Generally,
the system does not need to be shut
down during summer, as the WPM II is
provided with an automatic summer/
winter changeover facility. Set the WPM II
to standby when the system is taken out
of use. This retains the safety functions
designed to protect the system
(e.g. frost protection).
Drain the water side of the heat pump if
there is a risk of frost, and the heat pump
has been completely shut down.
22
The heat pump operates under automatic
control and requires no specific maintenance.
If heat meters are installed, frequently clean
their strainers, which block easily.
Keep the air inlet and outlet apertures of
the heat pump free from snow and leaves.
Cleaning
Regularly remove all leaves and accumulated
dirt from the evaporator fins, which are
accessible after the casing parts on the
condenser side have been removed.
Check the condensate drain at least once
every month (visual inspection). Remove dirt
and blockages immediately.
Faults
When the heat pump operation is impaired
through deposits of corrosion products (rust
sludge) inside the condenser, the customer
service can only use solvents and a flushing
pump to remove such deposits.
8 Troubleshooting
8.1 See operating and installation instructions WPM IIW
8.2 Checking the IWS settings
LEDs
Red LED:
Flashing or static: The LED flashes if a heat
pump fault occurs only once.
The system will be shut down. The red LED
illuminates permanently, if more than five
heat pump faults occur within two hours, the
system will be shut down permanently.
LEDs
26_03_01_0661
Reset button
In case of incorrect initialisation, see section
5.4.1 of the WPM II operating and installation
instructions.
Slide switches (S1)
Reset button
Slide switches (WP-Typ)
Fig. 20
If, in an emergency, a fault cannot be
located using the WPM II, open the
control panel and check the IWS
settings. These checks must only be carried
out by a qualified contractor:
WPM II
Slide switches (WP-Typ)
You can choose various compressor systems
with the Slide switches (WP-Typ). This was set
at the factory, subject to the heat pump type,
for the WPL 10 A/I/IK to 1.
1 Single compressor with internal HS 2
(DHC)
If the WPL is to be operated in dual-mode
together with a second heat source other
than the DHC, or alternatively as module
with another WPL, then set the Slide switches
(WP-Typ) to
9 Single compressor with external HS 2
In that case, do not connect the internal HS 2
(DHC) (control and supply). Check that the Slide switches (WP-Typ) is
set correctly.
DIP switch 4 position
Switch ON: STAND ALONE operation
Should the WPM II develop a fault, the heat
pump can, in emergencies, be operated in
stand alone mode. In this operating mode
there is no communication with the heat
pump manager WPM II. The heat pump
regulates to a fixed temperature. The heat
pump starts at 50 °C and stops at 55 °C.
The frost protection sensor connected to the
IWS at terminals sensor 1,2 is used to sense
the control magnitude, i.e. in both cases, the
fault will be entered into the FAULT LIST
(parameter 46) of the WPM II. Operation
can starts 10 minutes after the fault has been
removed; the LED extinguishes.
To delete the faults on the IWS, select
parameter 52, then press PRG to reset
the IWS. The internal counter will then be
returned to zero.
Heat pump faults indicated by the LED: High
pressure, low pressure, central and hardware
faults on the IWS (see parameter 46).
Green LED (centre): Flashes during
initialisation, and becomes steady after the
BUS address has been allocated successfully.
Only then is the communication with WPM II
possible.
Green LED (right): Illuminates constantly,
when STAND ALONE operation has been
selected.
Slide switches (S1)
The DIP switches 1 and 2 have no effect on
the WPL.
DIP switch 3 position
Switch ON: SERVICE mode
Corresponding compressors (defaulted by
setting the Slide switches (WP-Typ)) are
started in one second intervals.
Frost protection and icing-up
protection during defrosting of an
externally installed heat pump are now
lost.
In addition, remove the jumper between
terminals X4/5 and X4/6, and 230 V must
be applied between terminals X4/5. The
operating mode is indicated by the r.h. green
LED.
Guarantee
For guarantees please refer to the respective te rms and conditions of supply for your
country.
The installation, electrical connection and first operation of this appliance should be carried out by a qualified
installer.
The company does not accept
liability for failure of any goods
supplied which have not been installed
and operated inaccordance with the
manufacturer‘s instructions.
Environment and
recycling
Please help us to protect the environment by
disposing of the packaging in accordance with
the national regulations for waste processing.
23
Initial startup
Commissioning
reportprotocol for contractors
6.
1.
Installation room volume:
Customer’s address:
Installation conditions according to Stiebel Eltron
installation and operating instructions:
m³
Heat pump case venting:
Pipe to outside installed
yes
no
2.
if installed:
length of pipe run:
Installer:
Pipe diameter:
Number of bends:
3.
Distance heat pump to possible sources of ignition > 1 m
yes
no
Building type:
Detached house
Appartment block
Apartment block/Commercial
Industrial/Commercial
Public building
7.
mono mode
dual-mode - parallel
- part parallel
- alternative
Single heat pump
Cascade
4.
Operating mode
Dual-mode heat source
Equipment type:
Serial No.
Gas fired boiler
Oil fired boiler
Solid fuel boiler
District heating
Electric heating
Production No.
8.
5.
yes
ID No:
Heat pump location:
External
Internal
yes
Anti-vibration mounts:
no
Buffer cylinder content
Cellar
First floor
Second floor
Top floor
9.
DHW heating:
independent of HP
yes
no
On concrete base
On base plate
On level ground
Horizontal:
Hydraulic connection of the
heat pump with buffer cylinder
with external heat exchanger
yes
no
with internal heat exchanger
yes
no
no
yes
no
STE products: types:
Third party products types:
24
10. Heat source:
Air
12. System periphery:
Outside air
Extract air
Temperature
Circulation pump source
Manufacture / type
min:
°C
Circulation pump heating
max:
°C
Manufacture / type
Ground
Ground probe
/
Circulation pump
Heat pump/heat exchanger
No.
Manufacture / type
Internal pipe diameter:
Distributor: yes
/
no
/
Circulation pump
Heat exchanger / cylinder
Depth of hole:
Manufacture / type
Hydraulic connections as per Tichelmann
yes
no
/
Circulation pump heat pump/
buffer cylinder
Manufacture / type
Ground collector
/
Circulation pump DHW
circulation
Pipe length:
Manufacture / type
Diameter:
/
Circulation pump heat pump/
DHW cylinder
Area:
Manufacture / type
Distributor:
yes
no
/
Mixing valve
Hydraulic connections as per Tichelmann
yes
no
Manufacture / type
/
Mixing valve servomotor
Manufacture / type
Process medium:
13. Control unit
Type:
STIEBEL-ELTRON product/type
Concentration:
Third party: type
Frost protection:
Water
/
Parameters set in acc. with the control unit commissioning
report
Well
Surface water
14. Power supply:
Cable type:
Others:
No. of conductors
Cross-section
11. Heating system:
Installed acc. to VDE
Underfloor heating
Convectors
Panels
Radiators
Control cable heat pump:
Design temperature: FL
yes
no
Cable type
°C/ RE
°C
No. of conductors
Cross-section:
25
15. Actual data:
16. Tested to VDE 0701
Actual at the heat pump after 10 min. operation:
Brine inlet/water/air:
°C
Brine outlet/water/air:
°C
Heat pump flow temp.:
°C
Heat pump return temp:
°C
Implemented:
yes
no
Values OK:
yes
no
17. System layout
Place, date
26
Installer’s signature
27
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