Dimplex SI 14ME, SI 11ME, SI 9ME, SI 7ME, SI 5ME User Manual

5 (1)

SI 5ME SI 7ME SI 9ME SI 11ME SI 14ME

Montageund Gebrauchsanweisung

Installation and

Operating Instructions

Instructions d’installation et d’utilisation

Français English Deutsch

Sole/Wasser-

Brine-to-Water

Pompe à chaleur

Wärmepumpe für

Heat Pump for

eau glycolée-eau

Innenaufstellung

Indoor Installation

pour installation

 

 

intérieure

Bestell-Nr. / Order no. / No de commande : 452232.66.13

FD 8705

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........................................................................................................................................

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6

Set-up .............................................................................................................................................

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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 ..............................................................................................................................

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8

Commissioning .............................................................................................................................

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8.1

General Information ................................................................................................................................

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8.2

Preparation .............................................................................................................................................

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8.3

Start-up Procedure .................................................................................................................................

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9

Maintenance and Cleaning ...........................................................................................................

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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

English

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English

1

1Please Read Immediately

1.1Important 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 must be 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!

The heat pump must be started up in accordance with the installation and 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.

1.2Legal 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 compliance 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 source system and the heating 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.

1.3Energy-Efficient Use of the

Heat Pump

By operating this heat pump you are helping to protect our environment. Both the heating system and the heat source must be properly designed and dimensioned to ensure efficient operation. It is particularly important to keep water flow temperatures as low as possible. All connected energy consumers should therefore be suitable for low flow temperatures. 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 particularly well-suited for energyefficient operation.

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.

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3

2Purpose of the Heat Pump

2.1Application

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.

2.2Operating Principle

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 temperature by the brine circulating in the ground collector, ground coil or similar device. A circulating pump then conveys the “heated” brine to the evaporator of 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. Depending on the set operating point (thermostat setting), the heating water is thus heated up to a max. of 60 °C.

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 refrigerant 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 required, 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 circuit manifold.

 

 

 

1)Liquifier

2)Control panel

3)Evaporator

4)Compressor

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Dimplex SI 14ME, SI 11ME, SI 9ME, SI 7ME, SI 5ME User Manual

English

4

4 Accessories

4.1Brine Circuit Manifold

The brine circuit manifold merges the individual collector loops of the heat source system into a single main pipe which is connected to the heat pump. Integrated ball valves allow the individual 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 transported 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!

6 Set-up

6.1General 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 maintaining a clearance of approx. 1 m in front of and on each side of the heat pump.

6.2Acoustic 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 system, we recommend connecting the heat pump to the heating system by means of hose sections.

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7.4

7 Installation

7.1General 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

7.2Heating 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, deaerated and pressure-tested.

The sensors which are delivered already connected and loosely placed in the switch box must be mounted and insulated according to the block diagram.

7.3Heat 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 hydraulic plumbing diagram must be adhered to.

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.

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 an antifreeze 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.

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 heating circuit should be operated with a suitable antifreeze if heat pump systems are implemented in buildings where a power failure can not be detected (holiday home).

7.4Electrical 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 terminal X1: PE and pump contactor K5: 2/4. 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 functioning 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.

An 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 required 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 applicable 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 10 mm².

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8

8 Commissioning

8.1General 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 guarantee (see Warranty).

8.2Preparation

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 heating circuits must be open.

The heat pump controller must be adapted to the heating system in accordance with the controller’s operating instructions.

8.3Start-up Procedure

The heat pump is started up via the heat pump controller.

ATTENTION!

The heat pump must be started up in 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 requirements 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 return flow listed in the table below for the current heat source temperature. The temperature spread should be measured as close as possible to the heat pump. The heating element of mono energy systems should be disconnected.

Heat source

Max. temperature spread

temperature

between heating flow and return

From

To

flow

-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

 

 

 

Any faults occurring during operation are displayed on the heat pump controller and can be corrected as described in the operating manual of the heat pump controller.

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11

9Maintenance and Cleaning

9.1Maintenance

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.

9.2Cleaning 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 therefore essential - in particular with respect to the piping of underfloor 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 system must 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 opposite to the normal flow direction.

To prevent acidic cleaning agents from entering the heating system circuit, we recommend connecting the flushing device directly to the flow and return flow of the liquifier. It is important that 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!

10 Faults / Trouble-

Shooting

This heat pump is a quality product and is designed for troublefree operation. In the event that a fault should occur, it will be indicated 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 aftersales 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 disposal of refrigerants and refrigeration oils.

9.3Cleaning 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 subsequently in weekly intervals. If no more signs of contamination are evident, the filter can be removed to reduce pressure drops.

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