SI LI 20TES - Heat pump DIMPLEX - Free user manual and instructions

Product type	Air-to-water heat pump for indoor installation
Model	SI LI 20TES
Brand	Dimplex
Dimensions (H x W x D)	1570 x 750 x 850 mm
Weight (including packaging)	257 kg
Electrical supply (power)	3~/N/PE 400 V 50 Hz, protection C16 A
Electrical supply (control)	1~/N/PE 230 V 50 Hz, protection C13 A
Nominal heating output (A7/W35)	17.7 kW
COP (A7/W35)	4.0
Refrigerant	R410A, charge 4.0 kg, GWP 2088, CO₂ equivalent 8 t
Outdoor air temperature range	-20 °C to 35 °C
Maximum water outlet temperature	60 °C ± 2
Sound power level (indoor/outdoor)	57 / 58 dB(A)
Nominal air flow rate	5300 m³/h (without external static pressure)
Heating connection	External thread 1 1/4"
Minimum heating water flow rate	1.7 m³/h
Frost protection	Integrated (heat pump controller)
Routine maintenance	Cleaning of filters and evaporator before each heating season
Protection rating	IP 21
Repairability	Spare parts available through authorized after-sales service

Frequently Asked Questions - SI LI 20TES DIMPLEX

What is the minimum outdoor temperature for operation?

The Dimplex SI LI 20TES heat pump can operate down to an outdoor temperature of -20 °C.

What type of refrigerant is used?

The refrigerant is R410A, with a charge of 4.0 kg. Its global warming potential (GWP) is 2088.

What are the dimensions of the unit?

The dimensions are: height 1570 mm, width 750 mm, depth 850 mm.

How to install the outdoor temperature sensor?

Install the sensor on an exterior wall, preferably north or northwest, away from direct sunlight and air vents. Use the supplied cable (max. 50 m).

What to do if a fault is displayed on the controller?

Consult the troubleshooting section in the heat pump controller manual. If you cannot resolve the issue, contact authorized after-sales service.

How to maintain the heat pump?

Before each heating season, clean the air ducts, evaporator, and condensate drain. Wipe the exterior surfaces with a damp cloth. Do not use abrasive or chlorine-containing products.

What is the maximum water outlet temperature?

The maximum water outlet temperature is 60 °C (±2 °C).

Do I need to provide a blocking contactor from the electricity company?

Yes, a blocking contactor (K22) with 3 main contacts and one normally open auxiliary contact is required. It must be sized according to the pump's power and provided by the customer.

What is the noise level of the unit?

The sound power level is 57 dB(A) indoors and 58 dB(A) outdoors. The sound pressure level at 1 m is 53 dB(A).

Can I use the unit for construction drying?

No, the heat pump is not designed for the high heat demand required for construction drying. Use special devices for this phase.

USER MANUAL SI LI 20TES DIMPLEX

Line drawing of a 3D box-like device with a recessed door and mounting feet (no text or symbols)

Installation and Operating Instruction

Air-to-Water Heat Pump for Indoor Installation

Technical diagram of an industrial machine with numbered components for identification

1) Verdampfer
2) Ventilator
3) Schaltkasten
4) Filtertrockner
5) Verflüssiger
6) Expansionsventil
7) Verdichter

3.2 Schaltkasten

Line drawing of a refrigerator with a handle and wheels (no text or symbols)

ACHTUNG!

Technical diagram showing two 3D mechanical components with numbered parts and directional arrows indicating assembly or movement.

Technical line drawing of a mechanical assembly with two cylindrical components and mounting holes (no text or symbols)

Technical line drawing of a rectangular frame with mounting brackets and a separate detail view showing internal components (no text or symbols)

Technical diagram of a mechanical device with labeled components and cross-sectional view

Technical diagram of a mechanical device with labeled parts and cross-sectional view

Pure electrical circuit lines without any symbols

7.4 Temperaturfühler

Glen Dimplex Thermal Solutions

Garantieurkunde GDTS

Glen Dimplex Thermal Solutions

Empty white rectangle with black border (no text or symbols)

Table of contents

1 Please Read Immediately....EN-2

1.1 Important Information:......EN-2
1.2 Intended Use......EN-2
1.3 Legal Regulations and Directives......EN-2
1.4 Energy-Efficient Use of the Heat Pump......EN-3

2 Purpose of the Heat Pump......EN-3

2.1 Application ......EN-3
2.2 Operating Principle......EN-3

3 Scope of Delivery ....EN-4

3.1 Basic Device.....EN-4
3.2 Switch Box......EN-4

4 Accessories......EN-4

4.1 Remote control......EN-4
4.2 Building management technology......EN-4
4.3 Thermal energy meter WMZ ......EN-5

5 Transport......EN-5

6 Set-UP......EN-6

6.1 General Information......EN-6
6.2 Condensed Water Pipe....EN-6
6.3 Sound....EN-6

7 Installation....EN-6

7.1 General Information......EN-6
7.2 Air Connection....EN-6
7.3 Heating System Connection....EN-8
7.4 Temperature sensor....EN-8
7.5 Electrical connection....EN-10

8 Start-UP......EN-11

8.1 General Information......EN-11
8.2 Preparation......EN-11
8.3 Procedure......EN-11

9 Maintenance / Cleaning ...... EN-11

9.1 Maintenance......EN-11
9.2 Cleaning the Heating System......EN-11
9.3 Cleaning the Air System ...... EN-12

10 Faults / Trouble-Shooting......EN-12

11 Decommissioning/Disposal......EN-12

12 Device Information......EN-13

13 Product information as per Regulation (EU) No 813/2013, Annex II, Table 2......EN-15

Anhang / Appendix / Annexes ...... A-I

Maßbilder / Dimension Drawings / Schémas cotés.... A-II

Diagramme / Diagrams / Diagrammes....A-IV

1 Please Read Immediately

1.1 Important Information:

ATTENTION!

When operating or maintaining a heat pump, the legal requirements of the country where the heat pump is operated apply. Depending on the refrigerant quantity, the heat pump must be inspected for leaks at regular intervals by a certified technician, and these inspections must be recorded.

ATTENTION!

When transporting the heat pump, ensure that it is not tilted more than 45^ (in any direction).

ATTENTION!

The heat pump and transport pallet are only joined by the packing film.

ATTENTION!

The transport securing device is to be removed prior to commissioning.

ATTENTION!

Do not restrict or block the area around the air intake or outlet.

ATTENTION!

Only operate the heat pump with the air ducts connected.

ATTENTION!

Ensure that there is a clockwise rotating field: With incorrect wiring the starting of the heat pump is prevented. A corresponding warning is indicated on the display of the heat pump manager (adjust wiring).

ATTENTION!

It is not permitted to connect more than one electronically regulated circulating pump via a relay output.

ATTENTION!

Operating the heat pump at low system temperatures may cause the heat pump to break down completely.

ATTENTION!

Before opening the device, ensure that all circuits are isolated from the power supply.

ATTENTION!

Any work on the heat pump may only be performed by authorised and qualified after-sales service technicians.

1.2 Intended Use

This device is only intended for use as specified by the manufacturer. Any other use beyond that intended by the manufacturer is prohibited. This requires the user to abide by the relevant project planning documents.. Please refrain from tampering with or altering the device.

1.3 Legal Regulations and Directives

This heat pump is designed for use in a domestic environment according to Article 1, Paragraph 2 k) of EU directive 2006/42/

EC (machinery directive) and is thus subjectments of EU directive 2014/35/EU (low-voltage directive). It is thus also intended for use by non-professionals for heating shops, offices and other similar working environments, in agricultural establishments and in hotels, guest houses and similar / other residential buildings.

The construction and design of the heat pump complies with all relevant EU directives, DIN/VDE regulations (see CE declaration of conformity).

When connecting the heat pump to the power supply, the relevant VDE, EN and IEC standards are to be fulfilled. Any further connection requirements stipulated by local utility companies must also be observed.

When connecting the heating system, all applicable regulations must also be adhered to.

This unit can be used by children aged 8 and over and by persons with limited physical, sensory or mental aptitude or lack of experience and/or knowledge, providing they are supervised or have been instructed in the safe use of the unit and understand the associated potential dangers.

Children must not play with the device. Cleaning and user maintenance must not be carried out by children without supervision.

ATTENTION!

When operating or maintaining a heat pump, the legal requirements of the country where the heat pump is operated apply. Depending on the refrigerant quantity, the heat pump must be inspected for leaks at regular intervals by a certified technician, and these inspections must be recorded.

More information can be found in the accompanying log book.

1.4 Energy-Efficient Use of the Heat Pump

With the purchase of this heat pump you are helping to protect the environment. A prerequisite for energy-efficient operation is the correct design of the heat source system and heating system (radiators and circulation pump).

It is particularly important for the efficiency of a heat pump to keep the temperature difference between heating water and heat source as small as possible. For this reason, it is advisable to design the heat source and heating system very carefully. A temperature difference of approx. one Kelvin increases the power consumption by around 2.5 %. When designing the heating system, it should be borne in mind that special consumers such as e.g. hot water preparation should also be considered and dimensioned for low temperatures. Underfloor heating systems (panel heating) are optimally suited for heat pump use on account of the low flow temperatures (30 °C to 40 °C).

It is important to ensure that the heat exchangers are not contaminated during operation because this increases the temperature difference, in turn reducing the COP.

Correct adjustment of the heat pump manager is also important for energy-efficient use of the heat pump. Further information can be found in the heat pump manager's operating instructions.

2 Purpose of the Heat Pump

2.1 Application

The air-to-water heat pump is to be used exclusively for heating of heating water. It can be used in newly built or previously existing heating systems.

The heat pump is suitable for mono energy and bivalent operation down to an external temperature of -20^ .

Proper defrosting of the evaporator is guaranteed by maintaining a heating water return flow temperature of more than 18 °C during continuous operation.

The heat pump is not designed for the increased heat consumption required when a building is being dried out. The additional heat consumption should be met using special devices provided by the customer. If a building is to be dried out in autumn or winter, we recommend installing an additional heating element (available as an accessory).

NOTE

The device is not suitable for operation with a frequency converter.

2.2 Operating Principle

Outside air is drawn in by the ventilator and fed via the evaporator (heat exchanger). The evaporator cools the air, i.e. it extracts heat from it. This extracted heat is then transferred to the working medium (refrigerant) in the evaporator.

The heat is “pumped” to a higher temperature level by increasing its pressure with the aid of the electrically driven compressors. It is then transferred to the heating water using the liquifier (heat exchanger).

Electrical energy is used to raise the temperature of the heat in the environment to a higher level. Because the energy extracted from the air is transferred to the heating water, this type of device is called an air-to-water heat pump.

The air-to-water heat pump consists of the main components evaporator, ventilator and expansion valve, as well as the low-noise compressors, liquifier and electrical control system.

At low ambient temperatures, humidity accumulates on the evaporator in the form of frost, reducing the transfer of heat. Uneven accumulation during this process does not indicate a fault. The evaporator is defrosted automatically by the heat pump as required. Steam may be emitted from the air outlet depending on the atmospheric conditions.

3 Scope of Delivery

3.1 Basic Device

The heat pump contains the components listed below.

The refrigeration circuit is "hermetically sealed" and contains the fluorinated refrigerant R410A included in the Kyoto protocol. Information on the GWP value and CO_2 equivalent of the refrigerant can be found in the chapter Device information. The refrigerant is CFC-free, non-ozone depleting and non-combustible.

Technical diagram of an internal air conditioning unit with numbered components and airflow indicators

The switch box is located in the heat pump. It can be swung out after removing the lower front cover and loosening the fastening screw located in the upper right-hand corner.

The switch box contains the supply connection terminals, as well the power contactors, the soft starter unit and the heat pump manager.

The heat pump manager is a convenient electronic regulation and control device. It controls and monitors the entire heating system on the basis of the external temperature, including hot water preparation and safety systems.

The customer must install the external temperature sensor, which is included in the scope of supply of the heat pump manager together with the necessary fixing accessories.

The enclosed operating instructions describe the function and use of the heat pump manager.

4 Accessories

4.1 Remote control

A remote control adds convenience and is available as a special accessory. Operation and menu navigation are identical to those of the heat pump manager. Connection takes place via an interface (special accessories) with RJ 12 Western plug.

NOTE

In the case of heating controllers with a removable operating element, this can also be used directly as a remote control.

4.2 Building management technology

The heat pump manager can be connected to a building management system network via supplementation of the relevant interface plug-in card. The supplementary installation instructions of the interface card must be consulted regarding the exact connection and parameterisation of the interface.

The following network connections can be made on the heat pump manager:

Modbus
EIB, KNX
Ethernet

4.3 Thermal energy meter WMZ

4.3.1 General description

The thermal energy meter (WMZ 25/32) is used for measuring the quantity of thermal energy supplied. It is available as an accessory. Due to the additional heat exchanger, two thermal energy meters are required for measuring the quantity of thermal energy.

Sensors in the flow and return of the heat exchanger pipes and an electronics module acquire the measured values and transmit a signal to the heat pump manager, which, depending on the current operating mode of the heat pump (heating/DHW/swimming pool), totals the thermal energy in kWh and displays them in the operating data and history menu.

NOTE

The thermal energy meter complies with the quality requirements of the German market incentive programme subsidising efficient heat pumps. The thermal energy meter is not subject to obligatory calibration, and can thus not be used for the heating cost billing procedure!

4.3.2 Hydraulic and electrical integration of the thermal energy meter

The thermal energy meter requires two measuring devices for data acquisition.

A measuring tube for the flow measurement
This must be installed in the heat pump flow (observe flow direction).
A temperature sensor (copper pipe with immersion sleeve) This must be installed in the heat pump return.

The installation locations for both measuring tubes should be as close to the heat pump as possible in the generator circuit.

To avoid eddying effects which could lead to incorrect measurements, there should be a gap of 50 cm between the measuring devices and other installed components such as pumps or valves.

Thermal energy meter cooling - mechanics L / N / PE 236 V / 50 Hz Pulse, thermal energy meter S-24 V AC N1 / ID12 in the heating flow in the heating return flow

5 Transport

ATTENTION!

When transporting the heat pump, ensure that it is not tilted more than 45^ (in any direction).

Use a pallet for transporting the heat pump to the final installation location. The basic device can be transported with a lift truck, hand truck or by means of 3/4" pipes fed through the holes in the base plate or frame.

Line drawing of a mechanical device with a lever and base platform (no text or symbols)

ATTENTION!

The heat pump and transport pallet are only joined by the packing film.

Before using the transport holes in the frame, it is necessary to remove the lower side panel assemblies. This is done by loosening each of the two screws at the base and then withdrawing the panels by unhooking them from above. Rehang the panels by gently pushing them in an upwards direction.

Technical diagram showing two views of a mechanical device with numbered components and directional arrows indicating assembly or movement.

Opening the cover Closing the cover

Be careful not to damage any components when inserting the pipes through the frame.

After the transport, the transport securing device is to be removed on either side at the bottom of the unit.

Technical diagram of a mechanical device with two cylindrical components mounted on a base plate, showing mounting holes and directional arrows (no text or symbols)

Remove/screw in transport lock

ATTENTION!

The transport securing device is to be removed prior to commissioning.

6 Set - UP

6.1 General Information

The air-to-water heat pump must be installed in a frost-free, dry room on an even, smooth and horizontal surface. The entire base of the frame should lie directly on the floor to ensure an adequate soundproof seal. T If this is not the case, additional sound insulation measures may be necessary. If the device is installed on top of a built-under buffer tank, a surface that fully supports the base is required. The heat pump must be installed so that maintenance work can be carried out without being hindered. This is ensured if the clearance displayed below is maintained.

Never install the device in rooms subject to high humidity. Condensation can form on the heat pump and air circuit if the humidity exceeds 50% and the external temperature is below 0 °C.

Neither frost nor temperatures higher than 35^ C must occur in the installation location at any time of the year.

If the heat pump is installed on an upper storey, the load-bearing capacity of the ceiling should be checked. On account of the acoustics, measures for isolating possible vibrations should also be very carefully planned in advance as well. Installation on a wooden floor is not recommended.

6.2 Condensed Water Pipe

Condensate that forms during operation must be drained off frost-free. To ensure proper drainage, the heat pump must be mounted horizontally. The condensate pipe must have a minimum diameter of 50 mm and must be fed into a sewer in such a way that it is safe from frost. Do not discharge the condensate directly into clearing tanks or cesspits, as aggressive vapours or a condensed water pipe which has not been laid in a frost-free manner could destroy the evaporator.

6.3 Sound

To prevent solid-borne sound from being transmitted to the heating system, we recommend connecting the heat pump to the heating system using a flexible hose.

Installed air ducts should be sound-isolated from the heat pump to prevent the transmission of solid-borne sound to the ducts.

7 Installation

7.1 General Information

The following connections need to be established on the heat pump:

Fresh and exhaust air
■ Flow and return flow of the heating system
Condensate outflow
■ Temperature sensor
Voltage supply

7.2 Air Connection

7.2.1 Air Connection General Information

ATTENTION!

Do not restrict or block the area around the air intake or outlet.

ATTENTION!

Only operate the heat pump with the air ducts connected.

The glass fibre reinforced concrete air ducts offered as accessories are moisture-resistant and diffusion-free.

The sealing collar is used to seal the air ducts on the heat pump. The air ducts are not screwed directly onto the heat pump. Only the rubber seal comes into direct contact with the heat pump when the system is installed correctly. This guarantees easy assembly and disassembly of the heat pump and also ensures that solid-borne sound is well insulated.

Technical line drawing of a rectangular frame with mounting brackets and a separate detail view labeled A (no text or symbols present)

If another type of air duct is used, observe the external and internal dimensions as specified in the figure. Also ensure that the vibration and duct insulation are adequate.

If flange-mounted air ducts are used, connecting stubs are secured on the air inlet and air outlet sides of the evaporator with 4 M8x16 hexagon bolts in the threaded holes provided. When doing this, ensure that both air duct stubs only touch the insulation. There should be no contact with the external sheeting.

M8x 16 (mh. 7.3) m n. 650 (7.8) 10 max max max 805 730

The values in parentheses are valid for the LI 24TES/ LI 28TES

7.2.2 Changing the direction of air flow

The direction of air flow of the device can be changed by reversing the fan.

The change in the air circuit must be taken into account when planning the plant. The specifications for the air intake and air extract opening in this manual remain unchanged.

ATTENTION!

Before opening the device, ensure that all circuits are isolated from the power supply.

ATTENTION!

Work on the heat pump may only be carried out by authorised and qualified after-sales service technicians.

To do this:

1) Remove the front panels from the bottom to the top.
2) Open the fan terminal box and disconnect the supply cable.

Technical diagram of a mechanical device with labeled components and cross-sectional view

3) Pull the supply cable inwards through the terminal box and nozzle panel.

4) Loosen the nut and washers on the four corners of the fan.
5) Pull the fan gently inside the device and pull it out through the front of the device. Protect evaporators from damage.
6) Pull out the spacer tube from the mounting bolts at the four corners.

Technical diagram of a mechanical device with labeled parts and cross-sectional view

7) Cut out a square in the device insulation on the right air vent opening along the existing perforation so it matches the left side.
8) Insert the fan with reverse direction of air flow back into the device from the front and insert onto the screws on the right. Check the position of the cable entry. Protect evaporators from damage.
9) Insert the spacer tube onto the mounting bolts and tighten the fan with the washers and nuts at the four corners.
10) Feed the cable as illustrated through the nozzle panel and terminal box and tighten the screws.
11) Connect the cables in the terminal box of the fan (see diagram for connection, comply with clockwise field of rotation) and screw on the terminal box lid.

1 2 TB 1B W2 U1 U2 V1 V2 W1 ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ ↑ #6 #7 #5 #4 #1 #2 #3 PE

12) Ensure that there are no leaks in the terminal box and all cable glands.

13) Screw on the panels.

7.3 Heating System Connection

The heating system connections on the heat pump have a 1 14 " external thread. Use a spanner to firmly grip the transitions when 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. For systems in which the heating water flow can be shut off via the radiator or thermostat valves, an overflow valve must be installed in a heating bypass behind the heat pump by the customer. This ensures a minimum heating water flow rate through the heat pump and helps to avoid faults.

Once the heating system has been installed, it must be filled, de-aerated and pressure-tested.

Consideration must be given to the following when filling the system:

■ Untreated filling water and make-up water must be of drinking water quality (colourless, clear, free from sediments)
- Filling water and make-up water must be pre-filtered (pore size max. 5 µm).

Scale formation in domestic hot water heating systems cannot be avoided, but in systems with flow temperatures below 60 °C, the problem can be disregarded. With high-temperature heat pumps and in particular with bivalent systems in the higher performance range (heat pump + boiler combination), flow temperatures of 60 °C and more can be achieved. The following standard values should therefore be adhered to with regard to the filling and make-up water according to VDI 2035, sheet 1: The total hardness values can be found in the table.

Total heat output in kW	Total alkaline earths in mol/m3 and/or mmol/l	Specific system volume (VDI 2035) in l/kW
		< 20	≥ 20 < 50	≥ 50
		Total hardness in °dH
< 50	≤ 2.0	≤ 16.8	≤ 11.2	< 0.111
50 - 200 ≤ 2.0		≤ 11.2 ≤ 8	4
200 - 600 ≤ 1.5		≤ 8.4	< 0.111
>600 < 0.02		< 0.111

1. This value lies outside the permissible value for heat exchangers in heat pumps.

Fig. 7.1: Guideline values for filling and make-up water in accordance with VDI 2035

For systems with an above-average specific system volume of 50 l/kW, VDI 2035 recommends using fully demineralized water and a pH stabiliser to minimize the risk of corrosion in the heat pump and the heating system.

ATTENTION!

With fully demineralized water, it is important to ensure that the minimum permissible pH value of 7.5 (minimum permissible value for copper) is complied with. Failure to comply with this value can result in the heat pump being destroyed.

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 dual differential pressureless manifold or an overflow valve. The procedure for setting an overflow valve is described in the chapter "Start-up". When the minimum heating water flow rate is undershot, the plate heat exchanger in the refrigeration circuit can freeze, which can lead to total loss of the heat pump.

The nominal flow rate is specified depending on the max. flow temperature in the device information and must be taken into account during planning. With design temperatures below 30 C in the flow, the design must be based on the max. volume flow with 5 K spread for A7/W35.

The specified nominal flow rate (See “Device Information” on page 13.) must be guaranteed in every operating status. An installed flow rate switch is used only for switching off the heat pump in the event of an unusual and abrupt drop in the heating water flow rate and not to monitor and safeguard the nominal flow rate.

NOTE

The use of an overflow valve is only recommended for panel heating and a max. heating water flow of 1.3 m^3/h . System faults may result if this is not observed.

Antifreeze

Heat pump systems, which cannot be guaranteed to be frost-free, should be equipped with a drainage option (see Fig.). The antifreeze function of the heat pump manager is active whenever the heat pump manager and the heat circulating pump 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).

Pure electrical circuit lines without any symbols

7.4 Temperature sensor

The following temperature sensors are already installed or must be installed additionally:

■ External temperature sensor (R1) supplied (NTC-2)
■ Return temperature sensor (R2) installed (NTC-10)
■ Flow temperature sensor (R9) installed (NTC-10)

7.4.1 Sensor characteristic curves

Temperature in °C			-20	-15	-10	-5	0	5	10
NTC-2 in kΩ 14.6 11.4			8.9 7	1 5.6	4.5 3.7
NTC-10 In kΩ			67.7	53.4	42.3	33.9	27.3	22.1	18.0
15	20	25	30	35	40	45	50	55	60
2.9	2.4	2.0	1.7	1.4	1.1	1.0	0.8	0.7	0.6
14.9	12.1	10.0	8.4	7.0	5.9	5.0	4.2	3.6	3.1

The temperature sensors to be connected to the heat pump manager must correspond to the sensor characteristic curve illustrated in Fig.7.2 on pag. 9. The only exception is the external temperature sensor included in the scope of supply of the heat pump (see Fig.7.3 on pag. 9)

Fig. 7.2: Sensor characteristic curve NTC-10

Fig. 7.3: Sensor characteristic curve, NTC-2 according to DIN 44574 External temperature sensor

7.4.2 Mounting the external temperature sensor

The temperature sensor must be mounted in such a way that all weather conditions are taken into consideration and the measured value is not falsified.

■ Mount on the external wall on the north or north-west side where possible
- Do not install in a “sheltered position” (e.g. in a wall niche or under a balcony)
■ Not in the vicinity of windows, doors, exhaust air vents, external lighting or heat pumps
■ Not to be exposed to direct sunlight at any time of year

Dimensioning parameter sensor lead
Conductor material	Cu
Cable-length	50 m
Ambient temperature	35 °C
Laying system	B2 (DIN VDE 0298-4 / IEC 60364-5-52)
External diameter	4-8 mm

7.4.3 Installing the strap-on sensor

It is only necessary to mount the strap-on sensors if they are included in the scope of supply of the heat pump but have not yet been installed.

The strap-on sensors can be fitted as pipe-mounted sensors or installed in the immersion sleeve of the compact manifold.

Mounting as a pipe-mounted sensor

■ Remove paint, rust and scale from heating pipe.
- Coat the cleaned surface with heat transfer compound (apply sparingly).
- Attach the sensor with a hose clip (tighten firmly, as loose sensors can cause malfunctions) and thermally insulate.

Hose clip Thermal insulation Strap-on sensor

7.4.4 Hydraulic distribution system

The compact manifold and the dual differential pressureless manifold function as an interface between the heat pump, the heating distribution system, the buffer tank and, in some cases, even the hot water cylinder. A compact system is used to simplify the installation process, so that a lot of different components do not have to be installed individually. Further information can be found in the relevant installation instructions.

Compact manifold

The return sensor can remain in the heat pump, or should be installed in the immersion sleeve. The remaining empty space between the sensor and the immersion sleeve must be filled completely with heat transfer compound.

dual differential pressureless manifold

In order for the heating circuit pumps of the generator and consumer circuits to supply the flow to the return sensor, this must be installed in the immersion sleeve of the dual differential pressureless manifold.

7.5 Electrical connection

7.5.1 General

All electrical connection work must be carried out by a trained electrician or a specialist for the specified tasks in accordance with the

■ installation and operating instructions,
■ country-specific installation regulations (e.g. VDE 0100),
■ technical connection conditions of the energy suppliers and supply grid operators (e.g. TAB) and
■ local conditions.

To ensure that the frost protection function of the heat pump works properly, the heat pump manager must remain connected to the power supply and the flow must be maintained through the heat pump at all times.

The switching contacts of the output relay are interference-suppressed. Therefore, depending on the internal resistance of the measuring instrument, a voltage can also be measured when the contacts are open. However, this will be much lower than the line voltage.

Extra-low voltage is connected to controller terminals N1-J1 to N1-J11, N1-J24 to N1-J26 and terminal strip X3. If, due to a wiring error, the line voltage is mistakenly connected to these terminals, the heat pump manager will be destroyed.

7.5.2 Electrical installation

1) The electric supply cable for the output section of the heat pump (up to 4-core) is fed from the electricity meter of the heat pump via the utility blocking contactor (if required) into the heat pump (see heat pump operating instructions for supply voltage).

An all-pole disconnecting device with a contact gap of at least 3 mm (e.g. utility blocking contactor or power contactor) and an all-pole circuit breaker with common tripping for all external conductors must be installed in the power supply for the heat pump (tripping current and characteristic in compliance with the device information).

When connecting the device, ensure that the incoming supply has a clockwise rotating field L1; L2; L3.

ATTENTION!

Ensure that there is a clockwise rotating field: With incorrect wiring the starting of the heat pump is prevented. A corresponding warning is indicated on the display of the heat pump manager (adjust wiring).

For detailed information, refer to the circuit diagrams in the appendix.

2) The three-core electric supply cable for the heat pump manager (heating controller N1) is fed into the heat pump. The correct control voltage must be ensured according to the type plate. The (L/N/PE\~230 V, 50 Hz) supply cable for the heat pump manager must have a constant voltage. For this reason, it should be tapped upstream from the utility blocking contactor or be connected to the household current, as important protection functions may otherwise be lost during a utility block.

3) The utility blocking contactor (K22) with 3 main contacts (1/3/5 // 2/4/6) and an auxiliary contact (NO contact 13/14) should be dimensioned according to the heat pump output and must be supplied by the customer. The NO contact of the utility blocking contactor (13/14) is looped from terminal strip X3/G to connector terminal N1-J5/ID3. CAUTION! Extra-low voltage!
4) The contactor (K21) for the flange heater (E9) in the hot water cylinder should be dimensioned according to the radiator output and must be supplied by the customer. It is controlled (230 V AC) by the heat pump manager via terminals X2/N and N1-J16/NO10.
5) The contactors mentioned above in points 3 and 4 are installed in the electrical distribution system. Mains cables for the installed heaters must be laid and secured in accordance with the valid standards and regulations.
6) All installed electric cables must have permanent wiring.
7) The heat circulating pump (M13) is activated via the contact N1-J13/NO5. The connection points for the pump are X2/M13 and X2/N. When using pumps where the switching capacity exceeds the output, a coupling relay must be interposed.
8) The auxiliary circulating pump (M16) is activated via the contact N1-J16/NO9. The connection points for the pump are X2/M16 and X2/N. A coupling relay is already integrated in this output.
9) The domestic hot water circulating pump (M18) is activated via the contact N1-J18/NO6. The connection points for the pump are X2/M18 and X2/N. When using pumps where the switching capacity exceeds the output, a coupling relay must be interposed.
10) The return sensor (R2) is integrated into air-to-water heat pumps for indoor installation. The connection to the HPM is at terminals X3/GND and N1-J2/U2.
11) The external sensor (R1) is connected to terminals X3/GND and N1-J2/U1.
12) The domestic hot water sensor (R3) is included with the domestic hot water cylinder and is connected to terminals X3/ GND and N1-J2/U3.

7.5.3 Connecting an electronically regulated circulating pump

Electronically regulated circulating pumps have high starting currents, which may shorten the service life of the heat pump manager. A coupling relay is therefore installed or must be installed between the output of the heat pump manager and the electronically regulated circulating pump. This is not necessary if the maximum permissible operating current of the heat pump manager of 2 A and the maximum permissible starting current of the heat pump manager of 12 A are not exceeded by the electronically regulated circulating pump or a relevant approval has been issued by the pump manufacturer.

ATTENTION!

It is not permitted to connect more than one electronically regulated circulating pump via a relay output.

8 Start - UP

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. These measures can also include an additional warranty under certain conditions (see Warranty).

8.2 Preparation

The following items need to be checked prior to start-up:

All of the heat pump connections must be established as described in Chapter 6.
All valves that could impair the proper flow of the heating water in the heating circuit must be open.
■ The air intake and air outlet paths must be clear.
■ The ventilator must turn in the direction indicated by the arrow.
The settings of the heat pump manager must be adapted to the heating system in accordance with the controller's operating instructions.
■ Ensure the condensate outflow functions.

8.3 Procedure

The heat pump is started up via the heat pump manager. Adjustments should be made in compliance with the instructions.

At hot water temperatures under 7 °C, start-up is not possible. The water in the buffer tank must be heated to a minimum of 18 °C with the second heat generator.

To ensure a problem-free start-up, the following procedure is to be implemented:

1) Close all consumer circuits.
2) Ensure that the heat pump has the correct water flow.
3) Use the manager to select the automatic operating mode.
4) In the special functions menu, start the "Start-up" program.
5) Wait until a return temperature of at least 25 °C has been reached.
6) Now slowly reopen the heating circuit valves in succession so that the heating water flow is constantly raised by slightly opening the respective heating circuit. The heating water temperature in the buffer tank must not be allowed to drop below 20 °C during this process. This ensures that the heat pump can be defrosted at any time.
7) When all heat circuits are fully open and a return temperature of at least 18 °C is maintained, the heat pump start-up is complete.

ATTENTION!

Operating the heat pump at low system temperatures may cause the heat pump to break down completely.

9 Maintenance / Cleaning

9.1 Maintenance

To protect the paintwork, avoid leaning or putting objects on the device. External heat pump parts can be wiped with a damp cloth and domestic cleaner.

NOTE

Never use cleaning agents containing sand, soda, acid or chloride as these can damage the surfaces.

To prevent faults due to sediment in the heat exchanger of the heat pump, ensure that the heat exchanger in the heating system can not be contaminated. We recommend protecting the evaporator by installing a bird guard in the inlet duct. At least 80% of the cross section of the grating should be open. In the event that operating malfunctions due to contamination still occur, 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. These products enter 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.

NOTE

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 of the heat pump.

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.

The manufacturer's instruc4tions regarding cleaning agent must be complied with at all times.

9.3 Cleaning the Air System

Air ducts, evaporator, ventilator and condensate outflow should be cleaned of contamination (leaves, twigs, etc.) before the heating period. Do this by opening the front of the heat pump. The bottom should be opened first followed by the top.

ATTENTION!

Before opening the device, ensure that all circuits are isolated from the power supply.

Remove and rehang the side panel assemblies as described in Chapter 4.

To prevent the evaporator and the condensate tray from being damaged, do not use hard or sharp objects for cleaning.

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 shown on the heat pump manager display. Simply consult the Faults and Trouble-shooting page in the operating instructions of the heat pump manager. 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.

11 Decommissioning/Disposal

Before removing the heat pump, disconnect it from the power source and close all valves. The heat pump must be installed by trained personnel. 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.

12 Device Information

1 Type and order code			LI 20TES LI 24TES LI 28TES
2 Design
Heat source Air Air Air
2.1 Model Universall Universall Universall
2.2 Controller			Integrated Integrated Integrated
2.3 Thermal energy metering			Optional(as an accessory)	Optional(as an accessory)	Optional(as an accessory)
2.4 Installation location			Indoors	Indoors	Indoors
2.5 Performance levels			2	2	2
3 Operating limits
3.1 Heating water flow / return	°C		up to 60 ± 2 / from 18	up to 60 ± 2 / from 18	up to 60 ± 2 / from 18
3.2 Air	°C		-20 to +35	-20 to +35	-20 to +35
4 Flow / sound
4.1 Heating water flow internal pressure differential
to EN 14511	m3/h / Pa		3.6 / 25200	4.5 / 14700	5.3 / 21000
Minimum heating water flow	m3/h / Pa		1.7 / 6000	2.4 / 4200	2.8 / 6000
4.2 Sound power level according to EN 12102 device/external1	dB(A)		57 / 58	61 / 62	61 / 62
4.3 Sound pressure level at a distance of 1 m indoors 21	dB(A)		53	57	57
4.4 Heating water flow with an internal pressure differential of	m3/h / Pa		5300 / 0	7800 / 0	7500 / 0
	m3/h / Pa		5000 / 25	6500 / 25	6000 / 25
5 Dimensions, weight and filling quantities
5.1 Device dimensions 3	H x B x T mm		1570 x 750 x 850	1710 x 750 x 1000	1710 x 750 x1000
5.2 Weight of the transportable unit(s) incl. packaging	kg		257	322	326
5.3 Device connections for heating system	Inches		R 11⁄4"	R 11⁄4"	R 11⁄4"
5.4 Air duct connection (air intake side)	mm		650 x650	725 x 725	725 x 725
Air duct connection (air outlet side)	mm		650 x 650	725 x 725	725 x 725
5.5 Refrigerant; total filling weight	type / kg		R410A / 4.0	R410A / 4.6	R410A / 5.9
5.6 GWP value / CO 2 equivalent	--- / t		2088 / 8	2088 / 9	2088 / 12
5.7 Refrigeration circuit hermetically sealed			yes	yes	yes
5.8 Lubricant; total filling quantity	type / litres		Polyolester (POE) / 2.4	Polyolester (POE) / 2.4	Polyolester (POE) / 3.8
5.9 Volume of heating water in device	litres		3.8	4.6	5.1
6 Electrical connection
6.1 Supply voltage; fuse protection			3-/PE 400 V (50 Hz) / C16 A	3-/PE 400 V (50 Hz) / C25 A	3-/PE 400 V (50 Hz) / C25 A
RCD-Type			A	A	A
6.2 Control voltage; fuse protection			1-/N/PE 230 V (50 Hz) / C13 A	1-/N/PE 230 V (50 Hz) / C13 A	1-/N/PE 230 V (50 Hz) / C13 A
6.3 Degree of protection according to EN 60 529			IP 21	IP 21	IP 21
6.4 Starting current limiter			Soft starter	Soft starter	Soft starter
6.5 Rotary field monitoring			yes	yes	yes
6.6 Starting current	A		19	23	28
6.7 Nominal power consumption at A7/W35 / max. consumption 4	kW		4.5 / 8.6	6.0 / 10.2	7.9 / 13.7
6.8 Nominal current at A7/W35 / cos φ	A / --		8.1 / 0.8	10.9 / 0.8	14.3 / 0.8
6.9 Power consumption of compressor protection (per compressor)	W		--	--	--
6.10 Power consumption of fan	W		290	550	580
7 Complies with the European safety regulations			5	5	5
8 Additional model features

8.1 Type of defrosting		Reverse circulation	Reverse circulation	Reverse circulation
8.2 Frost protection condensate tray / water in device protected against freezing6		yes yes yes
8.3 Max. operating overpressure (heat sink)	bar	3.0	3.0	3.0
9 Heat output / COP
9.1 Heat output / COP4		EN 14511 EN 14511 EN 14511
	at A-7 / W35 kW / ---7	12.8 / 2.9	15.7 / 2.7	21.8 / 2.9
	kW / ---8	6.9 / 2.9	8.3 / 2.6	11.4 / 2.6
	at A-7 / W55 kW / ---7	12,7 / 1,9	15,7 / 1,9	21,7 / 2,0
	kW / ---8	6,0 / 1,7	8,3 / 1,8	11,5 / 1,8
	at A2 / W35 kW / ---7	14.7 / 3.3	19.9 / 3.4	25.4 / 3.3
	kW / ---8	8.7 / 3.4	10.5 / 3.2	13.4 / 3.1
	at A7 / W35 kW / ---7	17.7 / 4.0	23.4 / 3.9	28.1 / 3.0
	kW / ---8	10.5 / 4.1	12.4 / 3.7	14.5 / 3.2
	at A7 / W45 kW / ---7	18.8 / 3.3	22.4 / 3.1	27.8 / 3.0
	kW / ---8	10.2 / 3.3	11.9 / 2.9	14.2 / 2.8
	at A10 / W35 kW / ---7	20.7 / 4.5	24.8 / 4.1	28.3 / 3.6
	kW / ---8	11.5 / 4.5	13.4 / 3.9	15.1 / 3.4

1. The specified sound levels apply if the supporting feet (available as an option) are not used. If the supporting feet are used, the level can increase by up to 3db (A).

2. The specified sound pressure level corresponds to the operating noise of the heat pump in heating operation with a flow temperature of 35 ^ . The specified sound pressure level represents the free sound area level. The measured value can deviate by up to 16 dB(A), depending on the installation location.

3. Please note that additional space is required for pipe connections, operation and maintenance.

4. These data indicate the size and capacity of the system according to EN 14511. For an analysis of the economic and energy efficiency of the system, the bivalence point and regulation should be taken into consideration. These specifications can only be achieved with clean heat exchangers. Information on maintenance, commissioning and operation can be found in the respective sections of the installation and operating instructions. The specified values have the following meaning, e.g. A7 / W35: Heat source temperature 7^ and heating water flow temperature 35^ .

5. See CE declaration of conformity

6. The heat circulating pump and the heat pump manager must always be ready for operation.

7. Operation with 2 compressors.

8. Operation with 1 compressor.

13 Product information as per

Regulation (EU) No 813/

2013, Annex II, Table 2

Information requirements for heat pump space heaters and heat pump combination heaters
Model	LI 20TES
Air-to-water heat pump	yes
Water-to-water heat pump	no
Brine-to-water heat pump	no
Low-temperature heat pump	no
Equipped with a supplementary heater	no
Heat pump combination heater	no
Parameters shall be declared for medium-temperature application, except for low-temperature heat pumps. For low- temperature heat pumps, parameters shall be declared for low-temperature application.
Parameters shall be declared for average climate conditions:
Item Symbol Value Unit Item Symbol Value						Unit
Rated heat output (*)	Prated	12 kW		Seasonal space heating energy efficiency	ηs	117 %
Declared capacity for heating foer part load at indoor temperature 20°C and outdoor temperature Tj				Declared coefficient of performance or primary energy ratio for part load at indoor temperature 20 °C and outdoor temperature Tj
Tj = -7°C	Pdh	13,1 kW	Tj = -7°C		COPd	2,10 -
Tj = +2°C	Pdh	8,5 kW	Tj = +2°C		COPd	2,86 -
Tj = +7°C	Pdh	10,3 kW	Tj = +7°C		COPd	3,81 -
Tj = +12°C	Pdh	12,1 kW	Tj = +12°C		COPd	4,89 -
Tj = bivalent temperature	Pdh	12,1 kW	Tj = bivalent temperature		COPd	1,86 -
Tj = operation limit temperature	Pdh	12,1 kW	Tj = operation limit temperature		COPd	1,86 -
For air-to-water heat pumps				For air-to-water heat pumps:
Tj = -15°C (if TOL < -20°C)	Pdh	10,6 kW	Tj = -15°C (if TOL < -20°C)		COPd	1,46 -
Bivalent temperature	Tbiv	-10 °C		For air-to-water heat pumps:Operation limit temperature	TOL	-10 °C
Cycling interval capacity for heating	Pcych	-	kW Cycling interval efficiency		COPcyc	-
Degradation co-efficient (**)	Cdh	0,90	-	Heating water operating limit temperature	WTOL	60 °C
Power consumption in modes other than active mode				Supplementary heater
Off mode	POFF	0,015	kW Rated	heat output (*)	Psup	0 kW
Thermostat-off mode	PTO	0,020	kW	Type of energy input	eletrical
Standby mode	PSB	0,015	kW
Crankcase heater mode	PCK	0,000	kW
Other items
Capacity control	fixed			For air-to-water heat pumps: Rated air flow rate, outdoors	-5000
Sound power level, indoors/outdoors	LWA	57/58	dB	For water-/brine-to-water heat pumps: Rated brine or water flow rate, outdoor heat exchanger	-	-- m3/h
Emissions of nitrogen oxides	NOx	-	mg/kWh
For heat pump combination heater:
Declared load profile	-			Water heating energy efficiency	ηwh	- %
Daily electricity consumption	Qelec	-	kWh	Daily fuel consumption	Qfuel	- kWh
Contact details	Glen Dimplex Deutschland GmbH, Am Goldenen Feld 18, 95326 Kulmbach
(*) For heat pump space heaters and heat pump combination heaters, the rated output Prated is equal to the design load for heating Pdesignh, and the rated heat output of a supplementary capacity for heating sup(Tj).
(**) If Cdh is not determined by measurement nthen the default degradation is Cdh = 0,9(-) not applicable
Model LI 24TES
Air-to-water heat pump yes
Water-to-water heat pump no
Brine-to-water heat pump no
Low-temperature heat pump no
Equipped with a supplementary heater no
Heat pump combination heater no
Parameters shall be declared for medium-temperature application, except for low-temperature heat pumps. For low- temperature heat pumps, parameters shall be declared for low-temperature application.
Parameters shall be declared for average climate conditions:
Item Symbol Value Unit Item Symbol Value Unit
Rated heat output (*) Prated 15 kW			Seasonal space heating energy efficiency ηs 110 %
Declared capacity for heating foer part load at indoor temperature 20°C and outdoor temperature Tj			Declared coefficient of performance or primary energy ratio for part load at indoor temperature 20 °C and outdoor temperature Tj
Tj = -7°C Pdh 15,7 kW Tj = -7°C COPd 1,98 -
Tj = +2°C Pdh 10,5 kW Tj = +2°C COPd 2,74 -
Tj = +7°C Pdh 12,3 kW Tj = +7°C COPd 3,48 -
Tj = +12°C Pdh 14,8 kW Tj = +12°C COPd 4,53 -
Tj = bivalent temperature Pdh 14,6 kW Tj = bivalent temperature COPd 1,75 -
Tj = operation limit temperature Pdh 14,6 kW Tj = operation limit temperature COPd 1,75 -
For air-to-water heat pumps			For air-to-water heat pumps: TOL < -20°C) COPd 1,37 -
Tj = -15°C (if TOL < -20°C) Pdh 12,7 kW Tj = -15°C (if TOL < -20°C) COPd 1,37 -
Bivalent temperature Tdiv -10 °C For air-to-water heat pumps: Operation limit temperature TOL -10 °C
Cycling interval capacity for heating Pcych - kW Cycling interval efficiency COPcyc -
Degradation co-efficient (**) Cdh 0,90 - Heating water operating limit temperature WTOL 61 °C
Power consumption in modes other than active mode			Supplementary heater heat output (*) Psup 0 kW
Off mode POFF 0,015 kW Rated Type of energy input
Thermostat-off mode PTO 0,020 kW Type of energy input electrical
Standby mode PSB 0,015 kW
Crankcase heater mode PCK 0,000 kW
Other items
Capacity control fixed			For air-to-water heat pumps: Rated air flow rate, outdoors - 6500 m3/h
Sound power level, indoors/outdoors LWA 61/62 dB pumps: Rated brine or water flow rate, outdoor heat exchanger -- m3/h
Emissions of nitrogen oxides NOx - mg/kWh
For heat pump combination heater:
Declared load profile - Water heating energy efficiency ηwh - %
Daily electricity consumption Qelec - kWh Daily fuel consumption Qfuel - kWh
Contact details Glen Dimplex Deutschland GmbH, Am Goldenen Feld 18, 95326 Kulmbach
(*) For heat pump space heaters and heat pump combination heaters, the rated output Prated is equal to the design load for heating Pdesignh, and the rated heat output of a supplementary capacity for heating sup(Tj).
(**) If Cdh is not determined by measurement nthen the default degradation is Cdh = 0,9 (-) not applicable
Model LI 28TES
Air-to-water heat pump yes
Water-to-water heat pump no
Brine-to-water heat pump no
Low-temperature heat pump no
Equipped with a supplementary heater no
Heat pump combination heater no
Parameters shall be declared for medium-temperature application, except for low-temperature heat pumps. For low- temperature heat pumps, parameters shall be declared for low-temperature application.
Parameters shall be declared for average climate conditions:
Item Symbol Value Unit Item Symbol Value Unit
Rated heat output (*) Prated 25 kW				Seasonal space heating energy efficiency ηs 110 %
Declared capacity for heating foer part load at indoor temperature 20°C and outdoor temperature Tj				Declared coefficient of performance or primary energy ratio for part load at indoor temperature 20 °C and outdoor temperature Tj
Tj = -7°C Pdh 22,0 kW Tj = -7°C COPd 2,12 -
Tj = +2°C Pdh 25,5 kW Tj = +2°C COPd 2,82 -
Tj = +7°C Pdh 27,8 kW Tj = +7°C COPd 3,27 -
Tj = +12°C Pdh 29,1 kW Tj = +12°C COPd 3,71 -
Tj = bivalent temperature Pdh 22,0 kW Tj = bivalent temperature COPd 2,12 -
Tj = operation limit temperature Pdh 20,8 kW Tj = operation limit temperature COPd 1,89 -
For air-to-water heat pumps				For air-to-water heat pumps: TOL < -20°C) COPd 1,54 -
Tj = -15°C (if TOL < -20°C) Pdh 18,7 kW Tj = -15°C (if TOL < -20°C) COPd 1,54 -
Bivalent temperature Tblv -7 °C Operation limit temperature TOL -10 °C
Cycling interval capacity for heating Pcych - kW Cycling interval efficiency COPcyc -
Degradation co-efficient (**) Cdh 0,90 - Heating water operating limit temperature WTOL 60 °C
Power consumption in modes other than active mode				Supplementary heater
Off mode POFF 0,015 kW Rated heat output (*) Psup 4 kW
Thermostat-off mode PTO 0,020 kW Type of energy input eletrical
Standby mode PSB 0,015 kW
Crankcase heater mode PCK 0,000 kW
Other items
Capacity control fixed				For air-to-water heat pumps: Rated air flow rate, outdoors - 7500 m3/h
Sound power level, indoors/outdoors LWA 61/62 dB For water-/brine-to-water heat pumps: Rated brine or water flow rate, outdoor heat exchanger -- m3/h
Emissions of nitrogen oxides NOx - mg/kWh rate, outdoor heat exchanger
For heat pump combination heater:
Declared load profile - Water heating energy efficiency ηwh - %
Daily electricity consumption Qelec - kWh Daily fuel consumption Qfuel - kWh
Contact details Glen Dimplex Deutschland GmbH, Am Goldenen Feld 18, 95326 Kulmbach
(*) For heat pump space heaters and heat pump combination heaters, the rated output Prated is equal to the design load for heating Pdesignh, and the rated heat output of a supplementary capacity for heating sup(Tj).
(**) If Cdh is not determined by measurement nthen the default degradation is Cdh = 0,9 (-) not applicable

Table des matières

Technical diagram of an industrial cooling unit with numbered components for identification

Line drawing of a mechanical device with a lever and wheels (no text or symbols)

être

ATTENTION!

Technical diagram showing two 3D views of a cabinet with labeled components and directional arrows indicating movement or assembly.

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a rectangular mechanical component with mounting brackets and a separate detail view labeled A (no text or symbols present)

Technical diagram of a mechanical device with numbered components and cross-sectional view labeled 4x

Technical diagram of a mechanical device with labeled components and a 4x scaling indicator

1 2 TB TB W2 U1 U2 V1 V2 W1 #6 #7 #5 #4 #1 #2 #3 PE

Pure electrical circuit lines without any symbols

2.4 Einsatzgrenzendiagramm / Operating limits diagram / Diagramme des seuils d'utilisation

You can find and download the current CE conformity declaration at: