Dimplex SI 11MER User manual

Sole/Wasser-
Wärmepumpe für
Innenaufstellung
SI 5MER
SI 7MER
SI 9MER
SI 11MER
Brine-to-Water
Heat Pump for
Indoor Installation
Pompe à chaleur
eau glycolée-eau
pour installation
intérieure
Montage- und
Gebrauchsanweisung
DeutschEnglishFrançais
Instructions d’installation
et d’utilisation
Installation and
Operating Instructions
Bestell-Nr. / Order no. / Node commande : 452232.66.14 FD 8612

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Table of contents
1 Please Read Immediately .............................................................................................................E-2
1.1 Important Information..............................................................................................................................E-2
1.2 Legal Regulations and Directives...........................................................................................................E-2
1.3 Energy-Efficient Use of the Heat Pump..................................................................................................E-2
2 Purpose of the Heat Pump ...........................................................................................................E-3
2.1 Application..............................................................................................................................................E-3
2.2 Operating Principle .................................................................................................................................E-3
3 Basic Device ..................................................................................................................................E-3
4 Accessories ...................................................................................................................................E-4
4.1 Brine Circuit Manifold..............................................................................................................................E-4
5 Transport........................................................................................................................................E-4
6 Set-up .............................................................................................................................................E-4
6.1 General Information................................................................................................................................E-4
6.2 Acoustic Emissions.................................................................................................................................E-4
7 Installation .....................................................................................................................................E-5
7.1 General Information................................................................................................................................E-5
7.2 Heating System Connection...................................................................................................................E-5
7.3 Heat Source Connection.........................................................................................................................E-5
7.4 Electrical Connection..............................................................................................................................E-5
8 Commissioning .............................................................................................................................E-6
8.1 General Information................................................................................................................................E-6
8.2 Preparation.............................................................................................................................................E-6
8.3 Start-up Procedure .................................................................................................................................E-6
9 Maintenance and Cleaning...........................................................................................................E-7
9.1 Maintenance...........................................................................................................................................E-7
9.2 Cleaning the Heating System .................................................................................................................E-7
9.3 Cleaning the Heat Source System..........................................................................................................E-7
10 Faults / Trouble-Shooting.............................................................................................................E-7
11 Decommissioning / Disposal .......................................................................................................E-7
12 Device Information........................................................................................................................E-8
Anhang / Appendix / Annexes............................................................................................................ A-I

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1
1 Please Read
Immediately
1.1 Important Information
ATTENTION!
The heat pump is not secured to the wooden pallet.
ATTENTION!
The heat pump must not be tilted more than 45° (in any direction).
ATTENTION!
Do not use the holes in the panel assemblies for lifting the device!
ATTENTION!
Flush the heating system prior to connecting the heat pump.
ATTENTION!
The supplied dirt trap mustbe inserted in the heat source inlet of the heat
pump to protect the evaporator against the ingress of impurities.
ATTENTION!
The brine solution must contain at least a 25 % concentration of a
monoethylene glycol or propylene glycol-based antifreeze, which must
be mixed before filling.
ATTENTION!
Theheat pump mustbe started up inaccordancewiththe installationand
operating instructions of the heat pump controller.
ATTENTION!
We recommend the installation of a suitable corrosion protection system
to prevent the formation of deposits (e.g. rust) in the condenser of the
heat pump.
ATTENTION!
Any work on the heat pump may only be performed by authorised and
qualified after-sales service technicians.
ATTENTION!
Disconnect all electrical circuits from the power source prior to opening
the device.
1.2 Legal Regulations and
Directives
This heat pump conforms to all relevant DIN/VDE regulations
and EU directives. Refer to the EC Declaration of Conformity in
the appendix for details.
The heat pump must be connected to the power supply in com-
pliance with all relevant VDE, EN and IEC standards. Any further
connection requirements stipulated by local utility companies
must also be observed.
The heat pump is to be connected to the heat sourcesystem and
the heating or cooling system in accordance with all applicable
regulations.
Persons, especially children, who are not capable of operating
the device safely due to their physical, sensory or mental abilities
or their inexperience or lack of knowledge, must not operate this
device without supervision or instruction by the person in charge.
Children must be supervised to ensure that they do not play with
the device.
1.3 Energy-Efficient Use of the
Heat Pump
By operating this heat pump you are helping to protect our envi-
ronment. The heating or cooling system and the heat source
must be properly designed and dimensioned to ensure efficient
operation. It is particularly important to keep water flow tempera-
tures as low as possible in heating operation. All connected en-
ergy consumers should therefore be suitable for low flow temper-
atures. Raising the heating water temperature by 1 K
corresponds to an increase in energy consumption of approx.
2.5 %. Low-temperature heating systems with flow temperatures
between 30 °C and 50 °C are well-suited for energy-efficient op-
eration.

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3
2 Purpose of the Heat
Pump
2.1 Application
The brine-to-water heat pump is designed for use in existing or
newly built heating systems. Brine is used as the heat carrier in
the heat source system. Borehole heat exchangers, ground heat
collectors or similar systems can be used as the heat source.
2.2 Operating Principle
Heating
The heat generated by the sun, wind and rain is stored in the
ground. This heat stored in the ground is collected at a low tem-
perature by the brine circulating in the ground collector, ground
coil or similar device. A circulating pump then conveys the
“heated” brine to the evaporatorof the heat pump. There the heat
is given off to the refrigerant in the refrigerating cycle. This cools
the brine so that it can once again absorb thermal energy in the
brine circuit.
The refrigerant is drawn in by the electrically driven compressor,
compressed and “pumped” to a higher temperature level. The
electrical power needed to run the compressor is not lost in this
process. Most of it is absorbed by the refrigerant.
Subsequently, the refrigerant is passed through the condenser
where it transfers its heat energy to the heating water. Depend-
ing on the set operating point (thermostat setting), the heating
water is thus heated up to a max. of 60 °C.
Cooling
The functions of the evaporator and the liquifier are reversed in
the “Cooling” operating mode.
The heating water gives up its heat to the refrigerant via the liqui-
fier which is now functioning as an evaporator. The refrigerant is
pumped to a higher temperature level using the compressor.
Heat passes into the brine via the liquifier (evaporator in heating
operation) and consequently into the ground.
3 Basic Device
The basic device consists of a ready-to-use heat pump for indoor
installation, complete with sheet metal casing, control panel and
integrated controller. The refrigerating cycle contains the refriger-
ant R407C. R407C refrigerant is CFC-free, non-ozone depleting
and non-combustible.
All components required for the operation of the heat pump are
located on the control panel. An external wall temperature sensor
including fixing accessories and a dirt trap are supplied with the
heat pump. The power feed for the load current and the control
current must be installed by the customer.
The supply lead of the brine circulating pump (to be provided by
the customer) must be connected to the control panel. If re-
quired, the supply lead of the brine pump is be equipped with a
motor protection device.
The customer must provide both the collector and the brine cir-
cuit manifold.
1) Liquifier
2) Control panel
3) Evaporator
4) Compressor

  

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4
4 Accessories
4.1 Brine Circuit Manifold
The brine circuit manifold merges the individual collector loops of
the heat source system into a single main pipe which is con-
nected to the heat pump. Integrated ball valves allow the individ-
ual brine circuits to be shut off for de-aeration purposes.
5 Transport
A lift truck is suited for transporting the unit on a level surface.
Carrying straps may be used if the heat pump needs to be trans-
ported on an uneven surface or carried up or down stairs. These
straps can be passed directly underneath the wooden pallet.
ATTENTION!
The heat pump is not secured to the wooden pallet.
ATTENTION!
The heat pump must not be tilted more than 45° (in any direction).
Use the holes provided in the sides of the frame to lift the unit
without the pallet. The side panel assemblies must be removed
for this purpose. Any commercially available length of pipe can
be used as a carrying aid.
ATTENTION!
Do not use the holes in the panel assemblies for lifting the device!
6Set-up
6.1 General Information
The unit may only be installed indoors in rooms with low humidity
on a level, smooth and horizontal surface. The entire base of the
frame should lie directly on the floor to ensure a good soundproof
seal. If this is not the case, additional sound insulation measures
may be necessary.
The heat pump must be installed so that maintenance work can
be carried out without hindrance. This can be ensured by main-
taining a clearance of approx. 1 m in front of and on each side of
the heat pump.
6.2 Acoustic Emissions
The heat pump operates silently due to efficient sound insulation.
To prevent noise transmission to the foundation, a suitable,
sound dampening rubber mat should be placed underneath the
base frame of the heat pump.
To prevent any sound from being transmitted to the heating sys-
tem, we recommend connecting the heat pump to the heating
system by means of hose sections.

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7.4
7 Installation
7.1 General Information
The following connections need to be established on the heat
pump:
Flow and return flow of the brine system
Flow and return flow of the heating system
Power supply
7.2 Heating System Connection
ATTENTION!
Flush the heating system prior to connecting the heat pump.
Before connecting the heating water system to the heat pump,
the heating system must be flushed to remove any impurities,
residue from sealants, etc. Any accumulation of deposits in the
liquifier could cause the heat pump to completely break down.
Once the heating system has been installed, it must be filled, de-
aerated and pressure-tested.
The sensors which are delivered already connected and loosely
placed in the switch box must be mounted and insulated accord-
ing to the block diagram.
Minimum heating water flow rate
The minimum heating water flow rate through the heat pump
must be assured in all operating states of the heating system.
This can be accomplished, for example, by installing either a
manifold without differential pressure or an overflow valve. The
procedure for adjusting an overflow valve is described in the
Chapter Start-Up.
Antifreeze protection for installation locations
prone to frost
The antifreeze function of the heat pump controller is active
whenever the controller and the heat circulating pumps are ready
for operation. If the heat pump is taken out of service or in the
event of a power failure, the system has to be drained. The heat-
ing circuit should be operated with a suitable antifreeze if heat
pump systems are implemented in buildings where a power fail-
ure can not be detected (holiday home).
7.3 Heat Source Connection
The following procedure must be observed when connecting the
heat source:
Connect the brine pipe to the heat pump flow and return. The hy-
draulic plumbing diagram must be adhered to.
ATTENTION!
The supplied dirt trap must be inserted in the heatsource inlet of the heat
pump to protect the evaporator against the ingress of impurities.
In addition, a micro bubble air separator must be installed in the
heat source system.
The brine liquid must be produced prior to charging the system.
The liquid must have anantifreeze concentration of at least 25 %
to ensure frost protection down to -14 °C.
Only monoethylene glycol or propylene glycol-based antifreeze
may be used.
The heat source system must be de-aerated and checked for
leaks.
ATTENTION!
The brine solution must contain at least a 25 % concentration of a
monoethylene glycol or propylene glycol-based antifreeze, which must
be mixed before filling.
7.4 Electrical Connection
The following electrical connections must be established on the
heat pump:
Connection of the control line to the control panel of the heat
pump via terminal X1: L/N/PE.
Connection of the mains cable to the control panel of the
heat pump via terminal X6: L/N/PE.
Connection of the brine circulating pump (to be provided by
the customer) to the control panel of the heat pump via ter-
minal X1: PE and pump contactor K5: 14/24. As an option,
the brine pump can also be directly connected (see terminal
connection plan).
All electrical components required for the operation of the heat
pump are located on the control panel.
For detailed instructions concerning the connection and function-
ing of the heat pump controller (e.g. external wall sensor included
in the scope of supply) refer to the operating manual supplied
with the controller.
A disconnecting device with a contact gap of at least 3 mm (e.g.
utility blocking contactor or power contactor) as well as a 1-pole
circuit breaker have to be provided by the customer. The re-
quired conductor cross-section is to be selected according to the
power consumption of the heat pump, the technical connection
requirements of the respective utility company as well as all ap-
plicable regulations. Details on the power consumption of the
heat pump are listed on both the product information sheet and
the type plate. The connection terminals are designed for a max.
conductor cross-section of 10mm2.

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8
8 Commissioning
8.1 General Information
To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by the
manufacturer. This may be a condition for extending the guaran-
tee (see Warranty).Start-up should be carried out in heating op-
eration.
8.2 Preparation
The following items need to be checked prior to start-up:
The heat pump must be fully connected, as described in
Chapter 7.
The heat source system and the heating circuit must have
been filled and checked.
The dirt trap must be inserted in the brine inlet of the heat
pump.
All valves that could impair proper flow in the brine and heat-
ing circuits must be open.
The heat pump controller must be adapted to the heating
system in accordance with the controller’s operating instruc-
tions.
8.3 Start-up Procedure
The heat pump is started up via the heat pump controller.
ATTENTION!
The heat pump must be started upin accordance with the installation and
operating instructions of the heat pump controller.
If an overflow valve is fitted to assure the minimum heating water
flow rate, the valve must be set in accordance with the require-
ments of the respective heating system. Incorrect adjustment
can lead to faulty operation and increased energy consumption.
We recommend carrying out the following procedure to correctly
adjust the overflow valve:
Close all of the heating circuits that may also be closed during
operation (depending on the type of heat pump usage) so that
the most unfavourable operating state - with respect to the water
flow rate - is achieved. This normally means the heating circuits
of the rooms on the south and west sides of the building. At least
one heating circuit must remain open (e.g. bathroom).
The overflow valve should be opened far enough to produce the
maximum temperature spread between the heating flow and re-
turn flow listed in the table below for the current heat source tem-
perature. The temperature spread should be measured as close
as possible to the heat pump. The heating element of mono en-
ergy systems should be disconnected.
Any faults occurring during operation are displayed on the heat
pump controller and can be corrected as described in the operat-
ing manual of the heat pump controller.
Heat source
temperature Max. temperature spread
between heating flow and return
flow
From To
-5° C 0° C 10 K
1° C 5° C 11 K
6° C 9° C 12 K
10° C 14° C 13 K
15° C 20° C 14 K
21° C 25° C 15 K

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11
9 Maintenance and
Cleaning
9.1 Maintenance
The heat pump is maintenance-free. To prevent faults due to
sediment in the heat exchangers, care must be taken to ensure
that no impurities can enter either the heat source system or the
heating system. In the event that operating malfunctions due to
contamination occur nevertheless, the system should be cleaned
as described below.
9.2 Cleaning the Heating System
The ingress of oxygen into the heating water circuit may result in
the formation of oxidation products (rust), particularly if steel
components are used. This oxygen enters the heating system via
the valves, the circulating pumps and/or plastic pipes. It is there-
fore essential - in particular with respect to the piping of under-
floor heating systems - that only diffusion-proof materials are
used.
ATTENTION!
We recommend the installation of a suitable corrosion protection system
to prevent the formation of deposits (e.g. rust) in the condenser of the
heat pump.
Residue from lubricants and sealants may also contaminate the
heating water.
In the case of severe contamination leading to a reduction in the
performance of the liquifier in the heat pump, the systemmust be
cleaned by a heating technician.
According to today’s state of knowledge, we recommend using a
5 % phosphoric acid solution for cleaning purposes. However, if
cleaning needs to be performed more frequently, a 5 % formic
acid solution should be used.
In either case, the cleaning fluid should be at room temperature.
We recommend flushing the heat exchanger in the direction op-
posite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating sys-
tem circuit, we recommend connecting the flushing device di-
rectly to the flow and return flow of the liquifier. It is importantthat
the system be thoroughly flushed using appropriate neutralising
agents to prevent any damage from being caused by cleaning
agent residue remaining in the system.
Acids must be used with great care and all relevant regulations of
the employers’ liability insurance associations must be adhered
to.
If in doubt, contact the manufacturer of the chemicals!
9.3 Cleaning the Heat Source
System
ATTENTION!
The supplied dirt trap must be inserted in the heat source inlet of the heat
pump to protect the evaporator against the ingress of impurities.
Clean the dirt trap’s filter screen one day after start-up and sub-
sequently in weekly intervals. If no more signs of contamination
are evident, the filter can be removed to reduce pressure drops.
10 Faults / Trouble-
Shooting
This heat pump is a quality product and is designed for trouble-
free operation. In the event that a fault should occur, it will be in-
dicated on the heat pump manager display. Simply consult the
Faults and Trouble-Shooting page in the operating instructions of
the heat pump controller.
If you cannot correct the fault yourself, please contact your after-
sales service technician.
ATTENTION!
Any work on the heat pump may only be performed by authorised and
qualified after-sales service technicians.
ATTENTION!
Disconnect all electrical circuits from the power source prior to opening
the device.
11 Decommissioning /
Disposal
Before removing the heat pump, disconnect it from the power
source and close all valves. Observe all environmentally-relevant
requirements regarding the recovery, recycling and disposal of
materials and components in accordance with all applicable
standards. Particular attention should be paid to the proper dis-
posal of refrigerants and refrigeration oils.

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12
12 Device Information
1 Type and order code SI 5MER SI 7MER SI 9MER SI 11MER
2Design
2.1 Model Reversible Reversible Reversible Reversible
2.2 Degree of protection according to EN 60 529 IP20 IP20 IP20 IP20
2.3 Installation location Indoors Indoors Indoors Indoors
3 Performance data
3.1 Operating temperature limits:
Heating water flow °C Up to 55 Up to 55 Up to 55 Up to 55
Cooling, flow °C +7 to +20 +7 to +20 +7 to +20 +7 to +20
Brine (heat source, heating) °C -5 to +25 -5 to +25 -5 to +25 -5 to +25
Brine (heat sink, cooling) °C +5 to +25 +5 to +25 +5 to +25 +5 to +25
Antifreeze Monoethylene
glycol Monoethylene glycol Monoethylene glycol Monoethylene glycol
Minimum brine concentration (-13 °C freezing temperature) 25% 25% 25% 25%
3.2 Temperature spread of heating water (flow/return flow) at B0 / W35K 9.4 9.1 10.6 9.9
3.3 Heat output / COP at B-5 / W55 1kW / ---
1. This data indicates the size and capacity of the system. For an analysis of the economic and energy efficiency of the system, both the bivalence point and the regulation should
also be taken into consideration. The specified values, e.g. B10 / W55, have the following meaning: Heat source temperature 10 °C and heating water flow temperature 55 °C.
4.0 / 2.0 5.4 / 2.1 7.5 / 2.0 9.8 / 2.1
at B0 / W50 1kW / --- 4.8 / 2.7 6.2 / 2.7 8.8 / 2.8 11.3 / 2.9
at B0 / W35 1kW / --- 4.9 / 3.9 6.4 / 3.8 9.3 / 4.0 11.6 / 4.1
3.4 Cooling capacity / COP at B20 / W8 kW / --- 5.4 / 4.6 7.0 / 4.5 9.9 / 4.6 11.4 / 4.6
at B20 / W18 kW / --- 6.6 / 5.3 8.6 / 5.3 12.0 / 5.4 14.1 / 5.3
at B10 / W8 kW / --- 5.4 / 5.6 7.0 / 5.5 9.9 / 5.6 11.6 / 5.7
at B10 / W18 kW / --- 6.8 / 6.7 8.8 / 6.6 12.4 / 6.7 14.1 / 6.5
3.5 Sound power level dB(A) 54 55 56 56
3.6 Heating water flow with an internal pressure differential of m³/h / Pa 0.45 / 1,900 0.6 / 3,300 0.75 / 2,300 1.0 / 4,100
3.7 Brine throughput with an internal pressure differential
(heat source) of m³/h / Pa 1.2 / 16,000 1.7 / 29,500 2.3 / 25,000 3.0 / 24,000
3.8 Refrigerant; total filling weight type / kg R407C / 0.9 R407C / 0.9 R407C / 1.25 R407C / 1.6
4 Dimensions, connections and weight
4.1 Device dimensions without connections 2H x W x L mm
2. Note that additional space is required for pipe connections, operation and maintenance.
805 ×650 ×462 805 ×650 ×462 805 ×650 ×462 805 ×650 ×462
4.2 Device connections to heating system Inch G 1¼" external G 1¼" external G 1¼" external G 1¼" external
4.3 Device connections to heat source Inch G 1¼" external G 1¼" external G 1¼" external G 1¼" external
4.4 Weight of the transportable unit(s) incl. packing kg 115 117 124 128
5 Electrical Connection
5.1 Nominal voltage; fuse protection V / A 230 / 16 230 / 16 230 / 20 230 / 25
5.2 Nominal power consumption 1B0 W35 kW 1.25 1.68 2.3 2.8
5.3 Starting current with soft starter A 24 26 38 38
5.4 Nominal current B0 W35 / cos ϕA / --- 6.8 / 0.8 9.1 / 0.8 12.5 / 0.8 15.2 / 0.8
6 Complies with the European safety regulations 3
3. See CE declaration of conformity
333
7 Additional model features
7.1 Water in device protected against freezing 4
4. The heat circulating pump and the heat pump controller must always be ready for operation.
Yes Yes Yes Yes
7.2 Performance levels 1111
7.3 Controller internal/external Internal Internal Internal Internal

A-I
Anhang · Appendix · Annexes
Anhang / Appendix / Annexes
1 Maßbilder / Dimension Drawings / Schémas cotés................................................................... A-II
1.1 Maßbild / Dimension Drawing / Schéma coté.........................................................................................A-II
2 Diagramme / Diagrams / Diagrammes....................................................................................... A-III
2.1 Heizbetrieb / Heating operation / Mode chauffage SI 5MER.................................................................A-III
2.2 Kühlbetrieb / Cooling operation / Mode refroidissement SI 5MER ........................................................A-IV
2.3 Heizbetrieb / Heating operation / Mode chauffage SI 7MER..................................................................A-V
2.4 Kühlbetrieb / Cooling operation / Mode refroidissement SI 7MER ........................................................A-VI
2.5 Heizbetrieb / Heating operation / Mode chauffage SI 9MER................................................................A-VII
2.6 Kühlbetrieb / Cooling operation / Mode refroidissement SI 9MER ......................................................A-VIII
2.7 Heizbetrieb / Heating operation / Mode chauffage SI 11MER...............................................................A-IX
2.8 Kühlbetrieb / Cooling operation / Mode refroidissement SI 11MER .......................................................A-X
3 Stromlaufpläne / Circuit Diagrams / Schémas électriques......................................................A-XI
3.1 Steuerung Standardregler / Control via the standard controller / Commande régulateur standard.......A-XI
3.2 Steuerung Kühlregler / Control via the cooling controller / Commande régulateur refroidissement.....A-XII
3.3 Last / Load / Charge............................................................................................................................A-XIII
3.4 Anschlussplan Standardregler / Terminal diagram for standard controller / Schéma de branchement du
régulateur standard.............................................................................................................................A-XIV
3.5 Anschlussplan Kühlregler / Terminal diagram for cooling controller / Schéma de branchement du
régulateur de refroidissement..............................................................................................................A-XV
3.6 Legende / Legend / Légende..............................................................................................................A-XVI
4 Hydraulisches Prinzipschema / Hydraulic Plumbing Diagram / Schéma hydraulique......A-XVII
4.1 Darstellung / Schematic View / Représentation.................................................................................A-XVII
4.2 Legende / Legend / Légende............................................................................................................A-XVIII
5 Konformitätserklärung / Declaration of Conformity / Déclaration de conformité...............A-XIX

A-II
Anhang · Appendix · Annexes
1
1 Maßbilder / Dimension Drawings / Schémas cotés
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A-III
Anhang · Appendix · Annexes
2.1
2 Diagramme / Diagrams / Diagrammes
2.1 Heizbetrieb / Heating operation / Mode chauffage SI 5MER
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A-IV
Anhang · Appendix · Annexes
2.2
2.2 Kühlbetrieb / Cooling operation / Mode refroidissement SI 5MER
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A-V
Anhang · Appendix · Annexes
2.3
2.3 Heizbetrieb / Heating operation / Mode chauffage SI 7MER
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A-VI
Anhang · Appendix · Annexes
2.4
2.4 Kühlbetrieb / Cooling operation / Mode refroidissement SI 7MER
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A-VII
Anhang · Appendix · Annexes
2.5
2.5 Heizbetrieb / Heating operation / Mode chauffage SI 9MER
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A-VIII
Anhang · Appendix · Annexes
2.6
2.6 Kühlbetrieb / Cooling operation / Mode refroidissement SI 9MER
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A-IX
Anhang · Appendix · Annexes
2.7
2.7 Heizbetrieb / Heating operation / Mode chauffage SI 11MER
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A-X
Anhang · Appendix · Annexes
2.8
2.8 Kühlbetrieb / Cooling operation / Mode refroidissement SI 11MER
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A-XI
Anhang · Appendix · Annexes
3.1
3 Stromlaufpläne / Circuit Diagrams / Schémas
électriques
3.1 Steuerung Standardregler / Control via the standard controller /
Commande régulateur standard
1HW]0DLQV5pVHDX