REMKO EMT 100, EMF 100, CMT 180, CMF 180, CMT 120 Assembly And Operating Instructions Manual

Assembly and operating instructions

Assembly and operating instructions

REMKO EMF / EMT 100

Inverter heat pumps

2011-01-001, 1, en_GB

Read the instructions prior to performing any

task!

Read these operating instructions carefully before commis­sioning / using this device!

These instructions are an integral part of the system and must
always be kept near or on the device.

Subject to modifications; No liability accepted for errors or mis­prints!

Installation and operating instructions (translation of the orig­inal)

Table of contents

1 Safety and user notes........................................................................................................................... 5

1.1 General safety notes....................................................................................................................... 5

1.2 Identification of notes...................................................................................................................... 5

1.3 Personnel qualifications.................................................................................................................. 5

1.4 Dangers of failure to observe the safety notes................................................................................ 5

1.5 Safety-conscious working............................................................................................................... 6

1.6 Safety notes for the operator........................................................................................................... 6

1.7 Safety notes for installation, maintenance and inspection.............................................................. 6

1.8 Unauthorised modification and replacement part manufacture....................................................... 6

1.9 Intended use................................................................................................................................... 6

1.10 Warranty........................................................................................................................................ 7

2 Technical data....................................................................................................................................... 8

2.1 Units data........................................................................................................................................ 8

2.2 Unit dimenions outdoor module...................................................................................................... 9

2.3 Unit dimensions indoor module..................................................................................................... 10

2.4 Heat pump service limits in monovalent mode ............................................................................. 12

2.5 Pump-characteristic curves, indoor module charging pump......................................................... 12

2.6 Sound pressure level.................................................................................................................... 13

2.7 Overall sound pressure levels for outdoor module EMF/EMT 100............................................... 14

2.8 Characteristic curves..................................................................................................................... 15

3 Structure and Function....................................................................................................................... 18

3.1 The heat pump in general............................................................................................................. 18

3.2 EMF Series................................................................................................................................... 24

3.3 EMT Series................................................................................................................................... 24

4 Installation instructions...................................................................................................................... 25

4.1 General mountig instructions........................................................................................................ 25

4.2 Installation, mounting indoor module............................................................................................ 27

4.3 Installation, mounting outdoor module.......................................................................................... 28

5 Hydraulic connection.......................................................................................................................... 31

6

Corrosion protection.......................................................................................................................... 33

7 Connection of refrigerant lines.......................................................................................................... 34

7.1 Connection of refrigerant lines...................................................................................................... 34

7.2 Commissioning the refrigeration system....................................................................................... 35

8 Electrical connection.......................................................................................................................... 38

8.1 Electrical connection..................................................................................................................... 38

8.2 Structure electrical connection...................................................................................................... 41

8.3 Terminal block / legend................................................................................................................. 42

8.4 Connection diagram, terminal configuration.................................................................................. 44

8.5 Circuit diagrams............................................................................................................................ 45

8.6 Auxiliary relays and contactor function.......................................................................................... 53

9 Commissioning................................................................................................................................... 54

9.1 Control panel................................................................................................................................. 54

9.2 Notes for commissioning .............................................................................................................. 55

9.3 Heat pump manager Multi-Talent Plus (heat flow meters)............................................................ 56

3

REMKO EMF / EMT

10 Care and maintenance........................................................................................................................ 58

11

Troubleshooting and customer service............................................................................................ 59

12 Exploded view and spare parts......................................................................................................... 62

12.1 Exploded view and spare parts list outdoor module.................................................................... 62

12.2 Exploded view and spare parts list indoor module...................................................................... 64

13 Temporary shut-down........................................................................................................................ 69

14 Transport and packaging................................................................................................................... 69

15 Environmental protection and recycling.......................................................................................... 69

16 EC- Declaration of Conformity........................................................................................................... 70

17 General terms...................................................................................................................................... 71

18 Index..................................................................................................................................................... 74

4

1 Safety and user notes

1.1 General safety notes

Carefully read the operating manual before com­missioning the units for the first time. It contains
useful tips and notes such as hazard warnings to
prevent personal injury and material damage.
Failure to follow the directions in this manual not
only presents a danger to people, the environment
and the system itself, but will void any claims for
liability.

Keep this operating manual and the refrigerant
data sheet near to the units.

1.2

This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.

Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.

Safety notes in this manual are indicated by sym­bols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.

Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.

Identification of notes

DANGER!

CAUTION!

This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause slight or minor
injury.

NOTICE!

This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.

This symbol highlights useful tips and recom­mendations as well as information for efficient
and fault-free operation.

1.3 Personnel qualifications

Personnel responsible for operation, maintenance,
inspection and installation must be able to demon­strate that they hold a qualification which proves
their ability to undertake the work.

DANGER!

Inadequate qualifications may pose a danger
of death! Improper handling may cause serious
personal injury and material damage.

DANGER!

This combination of symbol and signal word
warns of a situation in which there is immediate
danger, which if not avoided may be fatal or
cause serious injury.

WARNING!

Therefore:

- Installation, commissioning and maintenance,
repairs must be carried out by a professional
certified personnel.

- In case of doubt, consult a qualified profes­sional.

1.4 Dangers of failure to observe the safety notes

This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.

5

Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.

In particular, failure to observe the safety notes
may pose the following risks:

REMKO EMF / EMT

n The failure of important unit functions.
n The failure of prescribed methods of mainte-

nance and repair.

n Danger to people on account of electrical and

mechanical effects.

1.5

The safety notes contained in this installation and
operating manual, the existing national regulations
concerning accident prevention as well as any
internal company working, operating and safety
regulations must be observed.

1.6

The operational safety of the units and compo­nents is only assured providing they are used as
intended and in a fully assembled state.

n The units and components may only be set up,

n Protective covers (grille) over moving parts

n Do not operate units or components with

n Contact with certain unit parts or components

n The power supply should be adapted to the

n Tripped circuit breakers may only be replaced

n In the event of defects that endanger the

n The units and components must not be

n Regulations such as the regional building regu-

n In the event that refrigerant has leaked from

n All housing parts and device openings, e.g. air

n The units must be inspected by a service tech-

Safety-conscious working

Safety notes for the operator

installed and maintained by qualified per­sonnel.

must not be removed from units that are in
operation.

obvious defects or signs of damage.

may lead to burns or injury.

requirements of the units.

by those of identical construction.

operational safety of the units, operation must
be discontinued.

exposed to any mechanical load, extreme
levels of humidity or direct exposure to sun­light.

lations and the Water Ecology Act must be
observed.

the indoor unit, the room must be properly ven­tilated before the unit is re-started. Otherwise
there is danger of suffocation.

inlets and outlets, must be free from foreign
objects, fluids or gases.

nician at least once annually. Visual inspec­tions and cleaning may be performed by the
operator when the units are disconnected from
the mains.

1.7 Safety notes for installation, maintenance and inspection

The operator must ensure that all installation,
maintenance and inspection work is carried out by
authorised and qualified personnel who have thor­oughly read the installation and operating manual.

The procedure for shutting down the units as
described in the installation and operating manual
must be followed in its entirety.

All safety and protection devices must be re­attached and restored to working order immedi­ately upon completion of the work.

n Appropriate hazard prevention measures must

be taken to prevent risks to people when per­forming installation, repair, maintenance or
cleaning work on the units.

n The setup, connection and operation of the

units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.

n Units may only be mounted at the points pro-

vided for this purpose at the factory. The units
may only be secured or mounted on stable
structures, walls or floors.

n Mobile units must be set up securely on suit-

able surfaces and in an upright position. Sta­tionary units must be permanently installed for
operation.

n The units and components should not be oper-

ated in areas where there is a heightened risk
of damage. Observe the minimum clearances.

n The units and components must be kept at an

adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.

1.8 Unauthorised modification
and replacement part manu­facture

Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufactured ensure safety. The
use of other parts may invalidate liability for
resulting consequences.

1.9

Depending on the model, the equipment and the
additional fittings with which it is equipped is only
intended to be used as an air-conditioner for the
purpose of cooling or heating the air in an
enclosed room.

Intended use

6

Any different or additional use shall be classed as
non-intended use. The manufacturer/supplier
assumes no liability for damages arising from such
use. The user bears the sole risk in such cases.
Intended use also includes working in accordance
with the operating and installation instructions and
complying with the maintenance requirements.

Under no circumstances should the threshold
values specified in the technical data be exceeded.

1.10

For warranty claims to be considered, it is essential
that the ordering party or its representative com­plete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.

The warranty conditions are detailed in the "Gen­eral business and delivery conditions". Further­more, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.

Warranty

7

REMKO EMF / EMT

2 Technical data

2.1 Units data

Series EMF 100 EMT 100

Function Heating or Cooling

System Split-Air/Water

Heat pump manager Multitalent or Multitalent Plus

Storage tank for hydraulic decoupling of volumetric flows optional Series 160 l

Electric booster heating / rated output kW optional Series / 9,0

Water heating optional Series

Heating output min / max kW 1,1 - 10,2

Heating output / compressor frequency / COP 1) for A10/
W35

Heating output / compressor frequency / COP 1) for A7/
W35

Heating output / compressor frequency / COP 1) for A2/
W35

Heating output / compressor frequency / COP 4) for A2/
W35

Heating output / compressor frequency / COP 1) for A-7/
W35

Cooling output min. / max. kW 1,6 - 9,1

Cooling output / compressor frequency / EER 2) for A35/
W7

Cooling output / compressor frequency / EER 2) for A27/
W7

Service limits, heating °C -18 bis +45

Service limits, cooling °C +15 bis +45

Supply-temperature, heating water °C up to +50

Min. Supply-temperature, cooling °C up to +7

kW/Hz/COP 8,7 / 58 / 4,9

kW/Hz/COP 8,1 / 58 / 4,4

kW/Hz/COP 4,7 / 58 / 3,0

kW/Hz/COP 6,3 / 73 / 2,5

kW/ Hz/COP 4,5 / 58 / 2,7

kW/Hz/COP 6,2 / 3,5 / 74

kW/Hz/COP 6,4 / 3,9 / 74

Refrigerant / pre-charge quantity outdoor unit -- / kg

Refrigerant / pre-charge quantity for up to 10 m length of
ordinary pipe

Refrigerant connection Inches ¼ / ⅝

Max. permissible single refrigerant pipe length. m 50

Max. permissible single refrigerant pipe height. m 30

Power supply V / Hz 230/1~ / 50

Starting current A 12,5

Rated current consumption for A7/W35 A 13

Rated power consumption for A7/W35 kW 1,84

g / m 30

R 410A2)/ 1,9

8

Series EMF 100 EMT 100

61050

12

880 52.9

364

17.6

395

796.5

Power factor by A7/W35 (cosφ) -- 0,98

Fuse protection (outdoor unit) A slow-acting 20

Rated water flow (according to EN 14511, at ∆t 5 K) m³/h 1,42

Pressure-loss at the condenser at rated flow kPa 5,4

Airflow volume outdoor module m³/h 2760

Max. operating pressure, water bar 3,0

Hydraulic connection, supply / return Inches 1“ AG

Sound-pressure level, LpA 1m (outdoor unit)

3)

dB(A) 54/40

Sound-power level in accordance with DIN EN

dB(A) 64,1

12102:2008-09 and ISO 9614-2

Dimensions, indoor unit (height/width/depth) mm 800/550/545 1760/550/670

Dimensions, outdoor unit (height/width/depth) mm 800 / 880 / 312

Enclosure class outdoor unit -- IP 24

Weight indoor module kg 47 135

Weight outdoor module kg 57

1)

COP = coefficient of performance or performance number according to EN 14511

2)

Contains greenhouse gas according to Kyoto protocol

3)

Clear-field distance: 5m

4)

COP = coefficient of performance number according to EN 14511, during alternative compressor fre-

quency of the inverter

2.2

Unit dimenions outdoor module

Fig. 1: Dimenions outdoor module EMF/ EMT 100

9

REMKO EMF / EMT

2.3 Unit dimensions indoor module

Unit dimensions indoor module EMF 100

220

160

255

140

180

Fig. 2: dimensions indoor module series EMF

1

2

3

4

5

6

7

8

Fig. 3: Pipe-socket arrangement

1 Refrigerant pipe, 3/8"
2 Refrigerant pipe, 5/8”
3 Hot-water return, 1” AG
4 Hot-water inlet, 1” AG
5 Sockets for safety assembly
6 Condensate-drain socket AD=22
7 Opening for installing the E-heater controller
8 Fill- and drain valve

255

200

85

155

235

50

220

Fig. 4: Pipe-outlet spacing

185

260

150

10

Unit dimensions indoor module EMT 100

2

3

1

550

180

100

60

1

3

2

4

6

1670

5

935

910

550

795

605

670

Fig. 5: dimensions indoor module EMT 100 (Tilt height: 1,900 mm)

1 Supply, warm water
2 Supply, heating
3 Return

4 Refrigerant pipes
5 Sockets for safety condensate drain
6 Overall dimensions: max. 1760

60

235

155

80

260

11

20,0

25,0

30,0

35,0

40,0

45,0

50,0

55,0

60,0

-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50

Source temperature [°C]

Inlet temperature [°C]

ALPHA2 25-40 (A)(N)

ALPHA2 32-40

REMKO EMF / EMT

2.4 Heat pump service limits in monovalent mode

Fig. 6: Service limits and test points EMF / EMT 100

Note: The left temperature value in the diagram refers to the Supply-temperature heating water and the
lower refers the outdoor air temperature.

2.5 Pump-characteristic curves, indoor module charging pump

Fig. 7: Pump-characteristic curves, idoor module
EMF / EMT 100

Level Output [W] Current [A] Motor protection

min. 5 0,05 Rotor current-proof

max. 22 0,19 Rotor current-proof

12

2.6 Sound pressure level

1m1m

5m

10m

1m

5m

10m

Fig. 8: Distance-dependent sound pressure level for the outdoor unit in relation to installation type, in accord­ance with the drawing

Distance-dependent sound pressure level

Heat pump out-

door unit

Sound power

level according

to ISO 9614-2

EMF / EMT 100 62,4 dB(A)

Installation type,

in accordance

1m 5m 10m 15m

with the drawing

In free field 54,4 dB(A) 40,4 dB(A) 34,4 dB(A) 30,9 dB(A)

In front of a wall 57,4 dB(A) 43,4 dB(A) 37,4 dB(A) 33,9 dB(A)

13

REMKO EMF / EMT

2.7 Overall sound pressure levels for outdoor module EMF/EMT 100

Excluded range

Cursor: (A) Power=62,4 dB

Fig. 9: Overall sound pressure level L

Middle frequency [Hz] 25 31,50 40 50 63 80 100 125 160

LI [dBA] (18,4) (25,7) (24,0) (27,4) (26,5) (21,0) 29,0 39,7 33,9

LWo [dBA] (27,2) (34,5) (32,7) (36,2) (35,3) (29,8) 37,8 48,5 42,7

Output A-bew

P

WP143 overall device

FPI [dB] -(5,6) (3,8) -(2,1) -(5,9) (1,4) (5,7) 5,4 4,3 4,3

Middle frequency [Hz] 200 250 315 400 500 630 800 1000 1250

LI [dBA] 34,4 43,3 51,0 39,4 40,1 41,3 42,3 39,0 36,7

LWo [dBA] 43,2 52,1 59,8 48,2 48,8 50,0 51,1 47,8 45,5

FPI [dB] 6,1 5,6 4,6 5,1 4,8 3,9 4,1 5,0 5,3

Middle frequency [Hz] 1600 2000 2500 3150 4000 5000 6300 8000 10000

LI [dBA] 35,5 32,9 31,6 29,5 25,1 21,1 16,7 (16,1) (14,7)

LWo [dBA] 44,3 41,6 40,4 38,3 33,9 29,9 25,5 (24,9) (23,4)

FPI [dB] 5,5 6,0 5,8 6,0 7,0 8,6 11,2 (9,9) (9,9)

Determination of sound power conforms to accuracy class 2, the standard deviation of the o. a. A-valued
sound-power levels amounts to 1.5 dB.

LWo: Sound power level radiated by the outdoor
unit

FPI: Correction value with regard to the environ­ment

LI: Sound intensity

14

2.8 Characteristic curves

0

1

2

3

4

5

6

7

8

9

10

11

12

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Outdoor temperature [°C]

Heating output [kW]

n-min

n-max

Rated frequency 58Hz

0

1

2

3

4

5

6

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Outdoor temperature [°C]

COP [-]

Rated frequency 58 Hz

Heat output at an inlet temperature of 35 °C

Fig. 10: Heat output EMF/ EMT 100 at an inlet temperature of 35 °C

COP at an inlet temperature of 35 °C

Fig. 11: COP EMF/EMT 100 at an inlet temperature of 35 °C

15

0

1

2

3

4

5

6

7

8

9

10

11

12

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Outdoor temperature [°C]

Heating output [kW]

n-min

n-max

Rated frequency 58Hz

0

1

2

3

4

5

6

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Outdoor temperature [°C]

COP [-]

REMKO EMF / EMT

Heat output at an inlet temperature of 45 °C

Fig. 12: Heat output EMF/ EMT 100 at an inlet temperature of 45 °C

COP at an inlet temperature of 45 °C

Fig. 13: COP EMF/EMT 100 at an inlet temperature of 45 °C

16

Heat output at an inlet temperature 55 °C

n-max.

0

1

2

3

4

5

6

7

8

9

10

11

12

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Outdoor temperature [°C]

Heating output [kW]

n-min.

0

1

2

3

4

5

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Outdoor temperature [°C]

COP [-]

Fig. 14: Heat output EMF/ EMT 100 at an inlet temperature of 55 °C

COP at an inlet temperature of 55 °C

Fig. 15: COP EMF/EMT 100 at an inlet temperature of 55 °C

17

REMKO EMF / EMT

3 Structure and Function

3.1 The heat pump in general

Arguments for Remko

n Low heating costs in comparison to oil and gas
n Heat pumps represent a contribution to envi-

ronmental protection

75%* of the heat
comes from the air,
free of charge

75%

freesolar energy
from the air

*

n Lower CO

gas heating

n All models are able to cool as well as heat
n Low noise-level of the outdoor unit
n Flexible installation due to split system design
n Negligible maintenance costs

emissions in comparison to oil and

2

electrical drive energy

25%

Fig. 16: Free heat

* The relationship can vary depending on outdoor temperature and operating conditions.

Economical and environmentally-conscious
heating

The burning of fossil-based energy sources in
order to generate power creates severe conse­quences for the environment. A high percentage of
fossil fuels is also problematic due to the limited
resources of oil and gas and the price increases
resulting from this. For this reason, many people
today are thinking both economically and environ­mentally-consciously in terms of heating. The
application of heat pump technology enables both
of these concepts to be combined. It makes use of
the energy which is permanently available in the
air, water and soil and converts it into usable
heating energy by means of inputting electrical
energy. Yet in order to generate heat equivalent to
4kWh, only 1kWh of electricity is required. The rest
is made available free-of-charge by the environ­ment.

*

Heat source

There are essentially three heat sources that heat
pumps can derive energy from. air, soil and
groundwater. Air heat pumps have the advantage
that air as a source heat is available everywhere in

unlimited quantities that can be used free of
charge. A disadvantage is that the outside air is at

its coldest when the heat requirement is greatest.

Brine heat pumps extract energy from the soil. This
is undertaken in serpentine pipe networks which
are laid approx. 1m deep or placed by means of
drilling. The disadvantage is the large space
requirements for the serpentine pipe networks or
the high cost of drilling. A long-term cooling of
the soil is also a possibility.

Water heat pumps require two wells in order to
obtain heat from the groundwater, one supply well
and one dry well. The development of this source
is not possible everywhere, it is expensive and
requires planning permission.

Heating

18

Function of the heat pump

A heat pump is a device which makes use of a
working medium to absorb ambient heat under low
temperatures and transports this heat to a place
where it can be of use for heating purposes. Heat
pumps work according to the same principles as a
refrigerator. The difference is that heat, the by­product of the refrigerator, is the goal of the heat
pump.

The main components of the cooling circuit consist
of an evaporator, a compressor, a condenser and
an expansion valve. In a finned evaporator,
the refrigerant evaporates both because of lower
pressure and because of lower heat-source tem­peratures through absorption of energy from the
environment. In the compressor, the refrigerant is
brought to a higher pressure and temperature by
the application of electrical energy. Next, the hot
refrigerant gas reaches the condenser, a plate
heat-exchanger. Here the hot gas condenses,

Outdoor area

transferring heat to the heating system. The lique­fied refrigerant then expands and cools in a flow
regulator, the expansion valve. Then the refrig­erant flows into the evaporator once more and the
cycle is complete.

For control, a heat-pump manager is included
which ensures the independent operation of all
safety devices. The water-circulation system of the
Series EMF consists of a charging pump, plate
heat-exchangers, dirt traps, a manometer, fill- and
drain valves, an automatic air-bleeder and flow
monitor.

The EMT series has, in addition, a 3-way switching
valve and a buffer storage.

Wall- and floor consoles, condensate pans, con­densate-pan heating, a 3-way switching valve, a
bypass valve and other sensors are available as
accessories.

Indoor area

Condensing

Evaporation

Decompression

Heating pump outdoor unit

Fig. 17: Functional diagram heating inverter heat pump

Liquefying

Heating pump indoor unit

19

REMKO EMF / EMT

Heat pump modes

Heat pumps can work in various operating modes.

Monovalent

The heat pump the only source of heat for a
building all year round. This mode is particularly
suitable for heating plants with low supply-water
temperatures and is primarily used in combination
with brine/water and water/water heat pumps.

Single energy source

The heat pump has an E-heater to handle peak
loads. The heat pump covers the majority of the
required heating power. Occasionally, when it is
extremely cold outside, an electrical booster­heating system switches on as required in order to
support the heat pump.

Bivalent parallel

The heat pump provides the entire heating energy
down to a predetermined outdoor temperature. If
the temperature drops below this value, a second
heat source switches on to support the heat pump.
There is a distinction to be made here between

alternative operation with oil- or gas heat and
regenerative operations with solar energy or

wood-fired heating. This mode is possible for all
heating systems.

Layout

A precise calculation of the building's heating load
according to EN 12831 is required for the design
and dimensioning of a heating system. However,
approximate requirements can be determined
based on the year of construction and the type of
building. The table
approximate specific heating loads for a number of
building types. The required heating system output
can be calculated by multiplying the area to be
heated with the given values

For a precise calculation, various factors must be
considered. The transmission-heat requirement,
the infiltration heat-loss and an allowance for water
heating comprise the total heating output which the
heating system must provide.

The total area of the floor surfaces, exterior wall
windows, doors and roofing is required in order to
determine the transmission heat requirement. In
addition, information about the materials used in
the building is required, as these lead to extremely

Ä

on page 21 shows the

varied thermal transmission coefficients (the so
called K value). Also required are the room tem­perature and the standard outdoor temperature,
that is, the lowest outdoor-temperature on average
that will occur during the year. The equation for
calculating the transmission-heat requirement is
Q=A x U x (tR-tA) and must be calculated sepa-

rately for all room-enclosure surfaces.

The infiltration heat requirement takes into consid­eration how often the heated room air is
exchanged for cold external air. The room volume
(V), the air exchange frequency (n) and the spe­cific heat capacity (c) of the air is also required in
addition to the room temperature and average low
temperature. The equation is: Q=V x n x c (tR-tA).

An approximate allowance for heating water - per
person according to VDI 2067: 0.2 kW

A residential home comprised of 150 m² living­space and a heat requirement of 35 W/m² has
been selected for the example design. A total of
five persons live in the house. The heat load
amount to 5.2 kW. Adding a drinking water allow­ance of 0.2 kW results in a required heat output of

6.2 kW. Depending on the power company, an
additional charge must then be made in order to
factor in the service time-out period. The rating and
determination of the heat pump's balance-point
temperature derives graphically from the heat
pump's temperature-specification heat-output dia­gram. (In the example, 35 °C for a floor heating­system). Next, the heat load for the standard out­door temperature (the lowest temperature of the
year locally) and the heat threshold are marked on
the graph. The outdoor-temperature-dependent
heating requirement, simplified here as a straight­line relationship between heat-load and the start of
the heating season, is recorded in the graph of
heat-load curves. The intersection of the two
straight lines with the max. heat-load curve is
plotted on the X axis, where the balance-point tem­perature is read. (in the example, ca.-9°C) The
least load of the 2nd heat source is the difference
between heat load and the heat pump's maximum
heat output on these days. (In the example, the
capacity necessary to cover peak loads is ca. 2.5
kW.)

20

Diagram layout

Heat output at a supply temperature of 35°C

0

2

4

6

8

10

12

-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Outdoor temperature [°C]

Heat output [kW]

Bivalent temperature

Minimum
perfor­mance

2. heat
source

Heat load
according to
DIN EN 12831

Heat load plus warm-water
requirements andservice
time-out period

Standard outdoor
temperature

Heating threshold for
old constructionaccording
to VDI 4650

Heat load

n-max

n-min

Rated frequency 78 Hz

Building type

Specific heating output in W/m

Passive energy house 10

Low-energy house built in 2002 40

According to energy conservation order regarding heat insulation

60

1995

Modern building constructed around 1984 80

Partially-renovated old building constructed pre-1977 100

Non-renovated old building constructed pre-1977 200

2

Fig. 18: Heat output diagramm of the heat pump EMF / EMT 100

Characteristics of REMKO inverter heat pumps

Outdoor air as a heat source

An air/water heat pump absorbs energy from the
outdoor air as its heat source and transmits this to
the heating system. They have the following
advantages over brine/water and water/water heat
pump systems:

21

n Can be used everywhere Air is available every-

where in unlimited quantities. For example, no
wells are required.

n No excavation required. No large areas are

required for soil collectors.

n Economical. Expensive drilling is not required.
n Excellent value for money and simple installa-

tion

n Particularly suitable for low-energy houses with

low inlet temperatures.

n Ideal for bivalent operation, in order to save

energy.

REMKO EMF / EMT

Split AC unit

The Remko inverter heat pump is a so called split
AC unit. This means that it consists of an outdoor
unit and an indoor unit, both of which are con­nected via refrigerant-carrying copper pipes. Thus
there are no water-carrying pipes laid from the
indoors to outdoors which need to be made frost
proof. The outdoor unit contains only the con­denser, the evaporator and the expansion valve.
This means that the outdoor unit is considerably
smaller. The indoor module contains the system's
condenser and the connections for the heating net­work.

REMKO inverter technology

The heat pump's condenser is equipped with a
requirement-dependent speed control system. The
power control on conventional heat pumps pro­vides only two states, either ON (full output) or
OFF (no output). The heat pump turns on below a

specified temperature and turns off when this tem­perature is reached. This kind of heat regulation is
very inefficient. Heat regulation in the Remko
inverter heat pump is modulated to the actual
need. The electronics system has an integrated
frequency-converter which serves to modify the
condenser speed and the speed of the blower as
required. The condenser works at a higher speed
when under full load than under partial load. The
lower speeds ensure a longer operational lifetime
for the components, improved coefficient of per­formance and lower noise. Lower speeds also
result in lower energy consumption (electricity) and
longer service life. I.e.: inverter heat-pumps will run
practically throughout the heating season. In all,
the highest efficiency possible.

Temperature

Conventional
Inverter

1/3

Fig. 19: Modern inverter technology

When it is switched on, the inverter only requires
one-third of the time of conventional systems

Minimal temperature fluctuations
mean energy savings

Time

22

Thanks to innovative inverter technology, this
heat pump will almost always operate by
adapting its heat output to the actual require­ments of the heating season, and will in fact
turn itself off when heat is no longer needed.
The same applies in the opposite direction with
cooling.

Defrost by circulation reversal

At temperatures below about +5°C, humidity
freezes in the evaporator (outdoor module) and an
ice layer can form which reduces heat transfer
from the air to the refrigerant and to the air stream.
This layer of ice must be removed. A four-way
valve serves to reverse the refrigerant circuit, so
that the hot gas from the compressor flows through
the original evaporator and the ice that has formed
there can melt. The defrost process is not initiated
after a predetermined time; rather it is carried out
as required in order to save energy.

Cooling mode

Because of circuit reversal, cooling is also pos­sible. In cooling mode, the components of the
refrigeration circuit are used to produce cold water
with which heat can be extracted from a building.
This can be accomplished with dynamic cooling or
passive cooling.

Under dynamic cooling the refrigerating capacity
is actively transferred to the indoor air. This is
undertaken by means of water-based fan convec­tors. In doing so, it is desirable that the inlet tem­peratures are under the dewpoint, in order to
transfer a higher refrigerating capacity and to
dehumidify the indoor air.

Passive cooling refers to the absorption of heat
via cooled floors, walls or ceiling surfaces. In doing
so, water-carrying pipes make the structural sec­tions into thermically effective heat exchangers. In
order to achieve this, the refrigerant temperature
has to lie above the dew point, in order to avoid the
formation of condensation. Dewpoint monitoring is
required for this purpose.

We recommend dynamic cooling with fan convec­tors, in order to achieve increased thermal per­formance and in order to dehumidify the air on
muggy summer days. The advantage here is that
dewpoint monitoring is not required.

The comfort zone in the illustration below shows
which values for temperature and humidity are
considered comfortable for people. This range
should ideally be met when heating or air-condi­tioning buildings.

Relative humidity in %

uncomfortably
dry

10 12 14 16 18 20 22 24 26 28 30

Fig. 20: Comfort zone

uncomfortably
humid

comfortable

still comfortable

Room air temperature in °C

23

REMKO EMF / EMT

3.2 EMF Series

We offer two different indoor-unit designs. The
wall-mounted EMF Series is equipped with a circu­lation pump and a safety module on the water side.
Furthermore, an electrical booster heater can be
incorporated as an option. The EMF Series was
constructed for the addition of several heat
sources (bivalent installations or systems with
solar-heating equipment). External buffer storage
is always required, its size depending on the type
and the power of the second heat source. On the
one hand, the buffer storage prevents short run­times for the heat pump and on the other hand,
that sufficient defrosting energy is available.

1

2

4

3

3.3 EMT Series

In addition, the indoor module of the EMT series is
fitted with a hot-water buffer storage. An electric
booster heater with a max. output of 9 kW is
standard. The hot-water buffer-storage has a
capacity of 150 litres and is integrated as a
hydraulic switch. As a result, the EMT Series is the
ideal equipment when the heat pump is intended
as the sole heat source (single energy-source ope­ration).

1

2

4

5

9

3

6

7

8

5

10

6

7

8

9

Fig. 21: EMF-Series

1 Safety assembly
2 Pipe assembly for the installation of the

optional electric supplemental heating
3 Fold-down electrical control box
4 Terminal block for the temperature sensor
5 Relays with indicator lights
6 Terminal block X2 for external components,

such as heating-circuit pumps, etc.
7 Terminal block X1 for the power supply to the

indoor module
8 Mode switch
9 Identification plate and quick-reference guide

are found inside the hinged panel

Fig. 22: EMT Series

1 Safety assembly
2 Standard, built-in electric booster heater (6kW /

9kW)
3 Fold-down electrical control box
4 Terminal block X3 for the temperature sensor
5 Relais mit Kontrolleuchten
6 Terminal block X2 for external components,

such as heating-circuit pumps, etc.
7 Circuit breaker for the standard, built-in electric

booster heater
8 Terminal block X1 for the power supply to the

indoor module and to the electric booster

heater
9 Mode switch

Not illustrated: identification plate and quick-refer­ence guide are found inside the removable centre
panel

24

4 Installation instructions

4.1 General mountig instructions

The indoor and outdoor modules have to be connected with refrigerant lines of dimensions 3/8" (ca. 16 mm)
and 5/8" (ca. 10 mm). A four-wire control cable has to be laid between the two modules. Both the indoor and
outdoor modules require a separate power supply.

Indoor area

Supply pipe for
hot-water tank (DN 25)

Indoor unit
EMT 100

Mains cable
Indoor unit
(3x1.5mm

Mains cable
Electric booster
heater
(5x2.5 mm

2

)

2

)

Common
Return pipe (DN 25)

Inlet for
Heating (DN 25)

Indoor unit
EMF 100

Mains cable
Indoor unit
(3x1.5mm

Mains cable
Electric booster
heater (optional)
(5x2.5 mm

Condensate drain

2

)

2

)

Hot-water supply
and return pipes
(DN 25)

Control cable (4x1 mm

Refrigerant lines

Outdoor unit EMT 100

Condensate drain
(Must be designed to be frost proof!)

Outdoor area

2

)

1

/4" and 5/8"

* Mains supply

230V/1~50Hz 25A

(3x4 mm

2

Fan

Fig. 23: System layout EMF 100 / EMT 100

Control cable (4x1 mm

Refrigerant lines

Outdoor unit EMF 100

)

Condensate drain
(Must be designed to be frost proof!)

2

)

1

/4" and 5/8"

* Mains supply

230V/1~50Hz 25A

(3x4 mm

Fan

2

)

25

2

1

4

3

REMKO EMF / EMT

WARNING!

All electric lines are in accordance VDE regula­tions to dimension and to lay.

General Information

n These instructions are to be observed when

installing the entire system.

n The device should be delivered as near as

possible to the site of installation in its original
packaging in order to avoid transport damage.

n The device is to be checked for visible signs of

transport damage. Possible defects must be
reported immediately to contract partners and
the forwarding agent.

n Suitable sites for installation are to be selected

with regard to machinery noise and the set-up
process.

n The shut-off valves for the refrigerant lines may

only be opened immediately before commis­sioning of the system.

n The exterior components are pre-filled with

refrigerant up to a distance of 10 meters from
the interior component. If the basic length of
the refrigerant line exceeds 10 metres, add
refrigerant.

n Establish all electrical connections in accord-

ance with the relevant DIN and VDE standards.

n The electrical power cables must be fastened

to the electrical terminals in the proper manner.
Otherwise there is a risk of fire.

n See that neither refrigerant or pipes that carry

water pass through living- or sleeping areas.

DANGER!

All electrical installation work is to be per­formed by speciality companies.

Wall breakthroughs

n A wall opening of at least 70 mm diameter and

10 mm slope from the inside to the outside
must be created.

n To prevent damage, the interior of the wall

opening should be padded or, for example,
lined with PVC pipe (see figure).

n After installation has been completed, use a

suitable sealing compound to close off the wall
breakthrough under observation of fire protec­tion regulations (responsibility of customer).

NOTICE!

Open refrigerant pipes must be protected
against the introduction of moisture by means
of suitable caps or adhesive strips Refrigerant
pipes may not be kinked or compressed.
Refrigerant pipes may only be cut to length
with a suitable pipe cutter (use no hacksaws or
the like).

DANGER!

The installation of refrigerant equipment may
be undertaken only by trained specialist per­sonnel!

Fig. 24: Wall breakthroughs

1. Liquid line

2. Control cable

3. Supply

4. Hot gas line

26

4.2 Installation, mounting indoor
module

Installation or setting up the indoor module

Indoor module EMF Series

n The wall bracket is to be attached to the wall

with the fasteners supplied and the indoor
module hooked onto it.

n The wall must possess sufficient load-bearing

capacity for the weight of the indoor module.

n Ensure that the wall bracket is installed level.
n The indoor module can be aligned precisely by

means of the adjustment screws on the back of
the housing.

n The indoor module is to be mounted in such a

way that all of the sides have sufficient space
for purposes of installation and maintenance. It
is equally important that there is sufficient
space above the device for installing the safety
assembly.

Fig. 25: Wall mounting EMF 100

Indoor module EMT Series

n The indoor module must be installed on a firm,

level surface.

n The surface must possess sufficient load-

bearing capacity for the weight of the indoor
module.

n The height-adjustable feet can be used to level

the indoor module precisely .

n The indoor module is to be mounted in such a

way that all of the sides have sufficient space
for purposes of installation and maintenance. It
is equally important that there is sufficient
space above the device for installing the pipes
and the safety assembly.

Fig. 26: Floor mounting EMT 100

WARNING!

Only fasteners suitable for the given applica­tion may be used.

27

REMKO EMF / EMT

4.3 Installation, mounting out­door module

Outdoor module installation location

n The device may be attached only to a load-

bearing structure or wall. Ensure that the out­door module is installed only vertically. The
installation site should be well ventilated.

n To minimise noise, install floor consoles with

vibration dampers and a considerable distance
from acoustically-reflective walls to minimise
noise.

n The minimum clearances specified on the next

page should be maintained when carrying out
the installation. These minimum distances
serve to ensure unrestricted air intake and
exhaust. Additionally, there must be adequate
space available for installation, maintenance
and repair.

n If the outdoor module is erected in an area of

strong winds, then the device must be pro­tected against them (Fig. 27). The snow line is
to be observed during installation (Fig. 28).

n The outdoor module must always be installed

on vibration dampers. Vibration dampers pre­vent the transmission of vibrations through the
floor or walls.

n A heated, condensate catch-pan ensures that

condensation from the pan can drain off.
Ensure that the condensate is prevented from
freezing so that it can drain off (gravel,
drainage). The Water Ecology Act is to be
observed.

n If there is insufficient space under the device

for the refrigerant lines, then the pre-cut
recesses can be removed from the lower
enclosure-panel and the pipes guided through
these openings.

n During installation, add about 20 cm to the

expected snow depth to guarantee unimpeded
intake and exhaust of outdoor air year round.
(Fig. 28).

n The installation site of the outdoor module

should be agreed together with the operator
primarily so that operating noise is minimised
and not in terms of “short routes”. Thanks to
the split-design technology there are a great
deal of different installation options with almost
identical efficiency available.

Wind

Fig. 27: Protection from wind

Snow + 20 cm

Fig. 28: Protection from snow

NOTICE!

The site for the outdoor module must be
selected so that machinery noise that occurs
disturbs neither the residents nor the facility
operator. Observe the TA-noise specifications
as well as the table containing the drawings
relating to sound pressure levels.

28

Point of emissions Assessment level in accordance

1

2

3

4 5

6

>= 300

>= 1500

>= 1500 >= 300

>= 300

>= 300

>= 600

>= 600

>= 300

>= 1500

>= 2000

with TA noise

days in dB(A) nights in dB(A)

Industrial areas 70 70

Commercial areas 65 50

Core areas, village areas and mixed zones 60 45

General residential areas and small housing estates 55 40

Exclusively residential areas 50 35

Spa areas, hospitals and mental institutions 45 35

Isolated noise peaks of short duration may not exceed 30 dB(A) during the day and 20 dB(A) at night.

Minimum distances in mm for the outdoor modules EMF/EMT 100

Fig. 29: Minimum distances for installation of an outdoor module in mm for EMF/EMT 100

1 Against a wall, free flow air forward, backward

flow restriction

2 Against a wall, facing the wall air outlet, flow

front restriction

3 Freely between two walls, facing the wall outlet,

Sides: flow restrictions in front and rear

29

4 In a niche, free flow air to the front, rear and flow

restriction on both sides.

5 Before a covered wall, free flow air to the front,

rear and top of flow restrictions

6 Before a covered wall, air outlet towards wall,

flow restrictions behind and above

1 2

3

4

>= 1500

>= 300 >= 600 >= 600 >= 600

>= 300

>= 600 >= 600

>= 1500

>= 300

>= 1500 >= 3000>= 600 >= 300>= 3000

REMKO EMF / EMT

Fig. 30: Minimum distances for installation of several outdoor modules in mm for EMF/EMT 100

1 Against a wall, facing the wall air outlet, flow

front restriction

2 In a niche, free flow air to the front, rear and flow

restriction on both sides.

Condensate draining and ensured discharge

Condensate connection

If the temperature falls below the dew point, condensation will form on the finned condenser during heating
operation.

A condensate drip pan should be installed on the underside of the unit to drain any condensate.

n The condensate drain pipe to be installed on-site must be installed with a in cline of at least 2 % for good

drainage. If necessary, fit vapour density insulation.

n When operating the system at outdoor temperatures below 4 °C, care must be taken that the condensate

line is frost protected. The lower part of the housing and condensate pan are to be kept frost free in order
to ensure permanent drainage of the condensate. If necessary, fit supplementary pipe heating.

n After completed installation, check that the condensate drainage is unobstructed and ensure that the line

is leak tight.

Ensured discharge in the event of leakage

3 Between two walls, facing the wall outlet and

other modules, Sides: flow restrictions in front
and rear

4 Between two walls, air outlet towards wall, or the

external modules-free: flow restriction in front,
rear and internal modules on the sides.

NOTICE!

Local regulations or environmental laws, for example the German Water Resource Law (WHG), can
require suitable precautions to protect against uncontrolled draining in case of leakage to provide for safe
disposal of escaping refrigerator oil or hazardous media.

30

1

2

3

4

5

6

7

8

9

Fig. 31: Condensate- and melt-water drainage

1 Leg
2 Condensation catch pan
3 Floor bracket
4 Foundation
5 Condensate drainage-heating

5 Hydraulic connection

A separate interpretation of nominal flow rate
must be made for every system (see attach­ment: Technical Data).

n We recommend installing a buffer storage unit

as a hydraulic switch for hydraulically isolation
of the heating circuit.

n Make a pipe-network calculation before instal-

ling the heat pump. After installing the heat
pump, it is necessary to perform a hydraulic
balancing of the heating circuit.

n Protect floor heating systems against exces-

sively high inlet temperatures.

n Do not reduce pipe diameters for the supply

and return connections to the heat pump
before connecting a buffer storage-unit.

n Plan for air bleed valves and drain-off taps at

appropriate places.

n Flush the the system's entire pipe network

before connecting the heat pump.

6 Drain pipe
7 Drainage channel
8 Soll
9 Gravel layer for seepage

n One or, where necessary, several expansion

tanks must be designed for the entire hydraulic
system.

n The system pressure of the entire pipe network

is to be matched to the hydraulic system and
must be checked when the heat pump is
turned off. Also update the static-pressure form
supplied with the heat pump.

n As delivered, the safety assembly consists of a

manometer, air bleeder and safety valve. It is
to be mounted to the pipe connection provided
on the indoor module.

31

2

1

3

4

REMKO EMF / EMT

Fig. 32: Safety assembly

1. Manometer

2. Automatic bleeder

3. Safety valve

4. Indoor unit

n The heat pump requires a constant, minimum

standing-water volume of 100 litres to guar­antee power for defrosting and to assure a
minimum running time. Buffer storage unit.

n The stop cocks supplied are to be positioned

directly at the connections for the heat pump
for the heater circuit inlet and return lines. The
shut-off valves each contain a thermometer.

n Additionally, a hand-operated bleeder is

installed on the heat pump for additional
bleeding.

n All visible metallic surfaces must be addition-

ally insulated.

n Cooling mode via the heating circuit requires a

completely vapour diffusion tight insulation
along the entire length of the pipework.

n All outgoing heating circuits, including the con-

nections for water heating, are to be secured
against circulating water by means of check
valves.

n Before being placed in service, the system

must be thoroughly flushed. Conduct a seal
test and perform a thorough bleeding of both
the indoor module and the entire system ­repeatedly, if necessary.

Actual schemas for hydraulic integration can
be found on the internet at www.remko.de

Fig. 33: Shut-off valves

Turning the thermometer heads serves to close
or open the stop valves! The dial be brought
into the desired position.

n Install the dirt traps delivered with the unit out-

side the heat pump in the return line. Ensure
that the dirt trap remains accessible for inspec­tion.

n Be sure to position one gate valve upstream

and another downstream of the dirt traps. This
ensures that the dirt traps can be checked at
any time without loosing water.

n The dirt traps must be checked during every

service of the system.

32

6 Corrosion protection

Oxygen always plays a role if metal materials in a
heating system corrode. pH values and the salt
content also play a major role. The challenge: A
licenced plumber who would like to be able to
guarantee his customers a hot water heating
system not at risk of corrosion from oxygen ­without the use of chemicals - must pay attention
to the following:

n Correct system design by the heating con-

tractor/planner and

See the following table for the requirements in accordance with VDI 2035 Part 1 with regard to total hard­ness.

Total hardness [°dH] subject to the specific system volume

Overall output in kW <20 l/kW ³20 l/kW and <50 l/kW ³50 l/kW

to 50 kW £16,8 °dH £11,2 °dH £0,11 °dH

The following table provides the allowed oxygen content in connection with the salt content.

n subject to the installed materials: filling the

heating system with demineralised softwater or
fully deionised water, checking the pH value
after 8 to 12 weeks.

Reference values for the hot water in accordance with VDI 2035 Part 2

low-salt salline

Electrical conductivity
at 25°C

Oxygen content mg/l < 0,1 < 0,02

pH value at 25°C 8,2 - 10,0 *)

*) For aluminium and aluminium alloys the pH value range is limited: the pH value at 25°C is 8.2-8.5 (max.

9.0 for aluminium alloys)

In low-salt water and the correct pH for a short
time even to oxygen concentrations up 0.5
mg / l are tolerated.

Water treatment with chemicals

Adding chemicals to treat water should only be
done as an exception. VDI 2035 Part 2 requires
explicitly under Point 8.4.1 that all water treatment
be explained and documented in the system log
book. This has reasons:

μS/cm < 100 100-1500

n To defective floating seals in pumps
n To the formation of biofilm which can cause

microbial influenced corrosion or significantly
impair heat transfer.

n The improper use of chemicals often leads to

the failure of elastomer materials

n To blockages and deposits because of sludge

formation

33

REMKO EMF / EMT

7 Connection of refrig-

erant lines

7.1 Connection of refrigerant
lines

n The outdoor- and the indoor modules are con-

nected with two copper pipes of refrigerator
quality having the dimensions ¼" and ⅝"
(REMKO special accessory).

n Observe the permitted bending radius for the

refrigerant pipes during installation in order to
prevent kinks. Never bend a pipe twice in the
same place in order to prevent embrittlement
or crack formation.

n Assure suitable fastening and insulation when

laying the refrigerant pipes.

n The copper pipes are to be flared to make the

connections to the modules. In doing so, check
that the flare has the correct shape and suit­able union nuts. (Fig. 34 to Fig. 36).

1

1

Fig. 35: Flanging the refrigerant line

1. Flanging tool

2

Fig. 34: Deburring the refrigerant line

1. Refrigerant line

2. Deburrer

Fig. 36: Correct flange shape

Copper piping Out­side diameterer

¼" or 6,35 mm 10,15 - 10,65 mm

⅝" or 15,88 mm 19,3 - 19,7 mm

Flare dimensions ø A

34

Connection to the unit

2

1

n Remove the cover panel from the outdoor

module. It may be necessary to remove the
pre-cut bushings.

n Take off the factory-fitted protective caps. You

can use the union nuts for additional mounting.
Make sure to slide the union nuts onto the pipe
before it is flared.

n Make connections to the device by hand ini-

tially, in order to ensure a good fit. Later,
tighten the joints with two open-end wrenches
Use one wrench to resist the rotation of the
other (Fig. 37).

NOTICE!

Use only tools which are approved for use in
an HVAC environment. (z. B.: bending pliers,
pipe/tubing cutters, de-burrers and flaring
tools). Do not cut refrigerant pipes with a saw.

NOTICE!

All work must be carried out in a way that pre­vents dirt, particles, water etc. from entering,
refrigerant lines!

Fig. 37: Tighten fittings

1. Tighten 1st Spanner

2. Counter 2nd Spanner

Copper piping Out­side diameter

¼" or 6,35 mm 12 - 16 Nm

⅝" or 15,88 mm 65 - 75 Nm

n The installed refrigerant pipes, including the

n Special measures need not be taken for the

flare connections, must be provided with suit­able insulation.

return of the compressor oil.

Tightening torque

Outdoor modules may be delivered with nuts
suitable for joining flanges.

7.2 Commissioning the refrigera­tion system

Leak testing

Once all the connections have been made, the
pressure gauge station is attached to the Schrader
valve as follows (if fitted):

blue = large valve = suction pressure

Once the connection has been made successfully,
the leak test is carried out with dry nitrogen. The
leak test involves spraying a leak detection spray
onto the connections. If bubbles are visible, the
connections have not been made properly. In that
case, tighten the connection or, if necessary,
create a new flange.

Pumping down to vacuum

After completing a successful leak test, the excess
pressure in the refrigerant pipes is removed and a
vacuum pump with an absolute final partial pres­sure of min. 10 mbar is used to remove all of the
air and empty the pipes. Any moisture present in
the pipes will also be removed.

NOTICE!

A vacuum of at least 20 mbar must be pro­duced!

35

REMKO EMF / EMT

The time required to generate the vacuum is
dependent on the final pressure pipe volume of the
indoor units and the length of the refrigerant pipes.
This always takes at least 60 minutes. Once any
foreign gases and humidity have been completely
extracted from the system, the valves on the pres­sure gauge station are closed and the valves on
the outdoor component are opened as described in
the "Commissioning" section.

Commissioning

NOTICE!

Commissioning should only be performed and
documented by specially trained personnel.

Observe the operating manual for the indoor
units and outdoor components when commis­sioning the entire system.

Once all components have been connected and
checked, the system can be commissioned. To
ensure the proper functioning of the units, a func­tional check must be performed prior to handover
to the operator in order to detect any operational
irregularities. This check is dependent on the
installed indoor units. The processes are specified
in the operating manual for the indoor units being
commissioned.

Functional checks and test run

Check the following points:

n Leak-tightness of the refrigerant pipes.
n Compressor and fan running smoothly.
n In cooling mode, cold air output by the indoor

units, and warm air output by the outdoor com­ponents.

n Function test of the indoor units and all pro-

gram sequences.

n Check of the surface temperature of the suc-

tion pipe and that the vaporiser is not over­heating. To measure the temperature, hold the
thermometer to the suction pipe and subtract
the boiling point temperature reading on the
pressure gauge from the measured tempera­ture.

n Record the measured temperatures in the

commissioning report.

Function test of heating operating mode

1. Remove the protective caps from the valves.

2. Start the commissioning procedure by briefly

opening the shut-off valves on the outdoor
component until the pressure gauge indi­cates a pressure of approx. 2 bar.

3. Check all connections for leaks with leak
detection spray and suitable leak detectors. If
no leaks are found, fully open the shut-off
valves by turning them anti-clockwise using a
spanner. If leaks are found, draw off the
refrigerant and rework the defective connec­tion. It is imperative that the vacuum creation
and drying steps are repeated!

4. Activate the main circuit breaker or fuse (to
be provided by the customer).

5. Program the heat pump manager.

6. Switching on heating mode

Due to the switch on delay, the com­pressor will start up a few minutes later.

7. Check the correct function and settings of all
regulation, control and safety devices during
the test run.

8. Measure all cooling data and record the
measured values in the commissioning
report.

9. Remove the pressure gauge.

Final tasks

n Use the heat pump manager to set the target

temperature to the required value.

n Re-install all disassembled parts.
n Instruct the operator on how to use the units.

NOTICE!

Check that the shut-off valves and valve caps
are tight after carrying out any work on the
cooling cycle. Use appropriate sealant prod­ucts as necessary.

36

Adding refrigerant

DANGER!

The connection of refrigerant pipes and the
handling of refrigerant may be only be carried
out by qualified personnel (competence cate­gory I).

DANGER!

Only refrigerant in a liquid state may be used to
fill the cooling cycle!

CAUTION!

Danger of injury from refrigerant!

Refrigerant degreases the skin on contact and
may cause cold burns.

Therefore:

- Wear chemical-resistant protective gloves
when undertaking any work involving refriger­ants.

-Safety glasses must be worn to protect the
eyes.

NOTICE!

Check the overheating to determine the refrig­erant fill quantity.

n The outdoor module is pre-filled with refrigerant

sufficient for a length of ordinary pipe up to 10
metres.

n If the length of any of the pipelines exceeds 10

metres, then an additional filling of 30g for
each metres of pipe length (basic length) is
required.

Basic pipe length Additional fill quantity

Up to and incl. 10m 0 g/m

10m to max. 50m per
circuit

37

30 g/m

REMKO EMF / EMT

8 Electrical connection

8.1 Electrical connection

n It is necessary to lay a power-supply cable

both to the outdoor module and, separately, to
the indoor module.

n Power to the indoor module may not be discon-

nected by the power company. (Frost protec­tion)

n All indoor- and outdoor modules require a

single-phase power supply at 230 V. / 50 Hz

n The electrical connection between outdoor-

and indoor modules is made using three-wire
control cable.

n Where applicable, a separate power supply

shall be provided to the indoor module for elec­tric booster heating.

n The heat-pump manager needs to know

whether a power-company release- or off­period is in effect. An electrically-isolated
switch must be installed for this purpose. (An
open switch signifies power available, an open
switch, off-time.)

Ä

n From side

terminal configuration’ on page 44 of this
manual can be found a connection schematic
along with corresponding circuit diagrams.

n Special rates for heat pumps may be offered

by the power company (PSC).

n Ask your local power company about the

details of any rates that might be available.

Chapter 8.4 ‘Connection diagram,

WARNING!

All cable sizes are to be selected according to
VDE 0100. Special attention should be given to
cable lengths, cable type and the kind of instal­lation. The information in the connection dia­gram and in the system overview are to be
seen as an acceptable installation possibility
only in a standard case!

NOTICE!

Make sure to connect the outdoor module's
neutral connector properly, otherwise the varis­tors on the line-filter circuit board will be
destroyed.

Check all plugged and clamped terminals to
verify that they are seated correctly and make
permanent contact. Tighten as required.

DANGER!

All electrical installation work must be done by
an electrician.

WARNING!

Always note the currently applicable VDE
guidelines and the notes in TAB 2007. The size
and type of the fuse are to be taken from the
technical data.

Electrical connection - indoor module

The following instructions describe the electrical
connection of the EMF and EMT Series indoor
module. Shown here is the connection for the EMF
Series.

1. Fold down or remove the lower housing­cover (Fig. 38-A)

2. Loosen the two screws that secure the front
of the housing and move it upward (
B)

3. Loosen the two screws that secure the con­trol-box cover, and lower it. Now, the cover
can be removed (Fig. 38-C) and the control
box be lowered for inserting the electric
cables. (Fig. 38-D)

4. Thread the power cable - as well as the con­trol cable between the indoor- and outdoor
modules and the cables for external devices
and sensors - though the cable openings into
the indoor module (
cable openings in the EMT series are located
above rather than below.

Fig. 38-E). Note that the

Fig. 38-

38

A

Fig. 38: Electrical connection - indoor module

NOTICE!

Attach cables in accordance with the connec­tion schematic and/or the circuit diagram in the
control box.

NOTICE!

Ensure correct polarity when connecting the
electrical leads, especially the control cable.

B

C

Electrical connection - outdoor module

n For the electrical connection loose the ccrew of

the right plastic cover.

D

E

1

The number of lines and the sensors is
dependent on the configuration of the heating
system and the components.

Make sure to use enough cable when installing
the indoor module so that the control box can
be fully lowered for future maintenance.

At the site, avoid adding cable inlets.

39

Fig. 39: Removing the plastic cover by loosening
the screw

1. Screw

n Electrical protection for the system is imple-

mented in accordance with the information in
the technical data. Observe the required con­ductor cross-sections!

n All cables must be connected with the correct

polarity and strain relief.

n Follow the connection schematic and the circuit

diagram.

n Connect the two-wire control cable to terminals

F1, F2 and the earth terminal.

n When connecting the control cable, make sure

that polarity is correct.

n If the outdoor module is installed on a roof, it

and the supporting structure must be earthed
separately. (Connection to a lightning rod or a
concrete-footing earth electrode)

1

2

REMKO EMF / EMT

Fig. 40: Connection terminals - outdoor module
EMF / EMT 100

1. Mains connection 230V/1~/50Hz

2. Control cable F1/F2

n The contact sensor is fastened to a pipe with

the trapezoidal brackets and retaining strap
provided.

n Clean the mounting point on the pipe. Subse-

quently a thermal compound (A) is applied and
the sensor is fixed in position.

NOTICE!

Make sure to connect the outdoor module's
neutral connector properly, otherwise the varis­tors on the line-filter circuit board will be
destroyed.

Temperature sensors

n The number of sensors required can vary with

the type of system.

n In the indoor module (F11), the collector

sensor, the return sensor (F17) and the sensor
for the liquid line (TH2-Refrigeration circuit) are
already installed and connected.

n Observe the pertinent notes for the sensor

position found in the hydraulic schematic.

n The standard model includes an external

sensor (F9), a submersible sensor (intended
for use as a custom hot-water sensor - F6), as
well as a sensor for a. total supply (T-Collector­F8).

n When connecting solar panels, the PT-1000

sensor must be used to measuring the col­lector temperature! (F14) All other sensors
must be NTC-sensors with a reference resist­ance of 5 kilo Ohms by 25 °C.

n All sensors are to be connected to the indoor-

module switching-cabinet according to the ter­minal-assignment diagram.

Contact sensor

Contact sensors can be mounted on the pipes, to
measure the heating-circuit temperatures, for
example.

Fig. 41: Fixation of the contact sensor

If the sensor cables are too short, they can be
extended up to a maximum of 100m with wire
having a cross-section of 1.5 mm².

External sensor

The connection of an outdoor sensor is always
required for the heat pump manager.

n Mount the outdoor sensor pointing skyward, in

a north-easterly direction, about 2.5 metres
above the ground. It may not be subjected to
direct sunlight and is to be protected against
excessive wind. Installation above windows or
air ducts is to be avoided.

n In order to carry out the installation, remove the

cover and secure the sensor with the screws
provided.

n A cable with wire cross-sections of 0.5 mm² is

recommended for connecting the sensor.

40

Fig. 42: External sensor

2

1

6

3

4

5

7

8

9

8.2 Structure electrical connection

Fig. 43: Structure electrical connection

1. Merlin I/O-platine (Heat pump manager)

2. Relays

3. Control-and-display unit

4. Contactor K8 (Elec. booster heater 3 kW)

5. Contactor K6 (Elec. booster heater 6 kW)

6. Terminal X1

7. Terminal X2

8. Terminal X3

9. Terminal X4

41

REMKO EMF / EMT

8.3 Terminal block / legend

Terminal block X1

Terminal Connection layout

F1 Power supply L

N Power supply N

Pe Power supply

1, 2, 3 Emergency heating mode

4 Flow monitor-L

5 Flow monitor-K2

6 Power plant-L

7 Power plant-IN

8, 9, 10, 11 Enable 2. Heat source

12 4-way-valve open

13 4-way-valve N

14 4-way-valve closed

15 Mixer HK2 open

16 Mixer HK2 N

17 Mixer HK2 closed

18 Pump HK1 L

19 Pump HK1 N

20 Pump HK1 Pe

21 Pump HK2 L

22 Pump HK2 N

Terminal Connection layout

38 Pump Indoor module L

39 Pump Indoor module N

40 Pump Indoor module Pe

Terminal block X2

Terminal Connection layout

1 L1

2 L2

3 L3

4 N

5 PE

Terminal block X3

Terminal Connection layout

1 F9 external sensor

2 F8 collector sensor

3 F6 warm water sensor

4 F5 inlet sensor HK2

5 Analogue remote control

FBR2

6 Analogue remote control

FBR2

23 Pump HK2 Pe

24, 25, 26 BW L Switching valve drinking

water preparation

27 BW N Switching valve

drinking water preparation Pe

28 D-phase

29 Valve cooling L

30 Valve cooling N

31 Valve cooling Pe

32 Pump cooling L

33 Pump cooling N

34 Pump cooling Pe

35 Solar pump L

36 Solar pump N

37 Solar pump Pe

7 F1 solid-fuel combustion

vessel

8 F11 reference sensor hot

water meters

9 F12 reference sensor solar,

lower buffer storage

10 Not connected

11 F14 solar collector / solid-fuel

combustion vessel

12 F15 flow-volume regulator

13 F17 return sensor heat pump

14 eBus +

15 eBus -

16 CANH

17 CANL

42

Terminal Connection layout

18 CAN -

19 CAN +

Terminal block X4

Terminal Connection layout

1 F1 (Communications outdoor

unit)

2 F2 (Communications outdoor

unit)

3 Not connected

4 to 16 Ground sensors F1-F17

43

REMKO EMF / EMT

8.4 Connection diagram, terminal configuration

On-site

sub-distribution

2

2

Relay switch

EMF/EMT 100: e.g.: NYM-I 3x xmm
EMF/EMT 150: e.g.: NYM-I 5x xmm

Indoor-module supply
Outdoor-module supply

Outdoor unit

L1
N

F1

F2

L1
L2
L3
N

F1

F2

Observe the technical requirements of

the local power company

2) Only in a set-up without hot water meters

3) Only in a set-up with hot water meters

Elect. heater supply

Flow monitor²

Enable 2. heat source

(4-way) switching

valve2. heat source

3-way mixer HK2

Circulation pump HK1

Circulation pump HK2

Switching valve

Hot-water usage

Switching valve, cooling

Circulation pump, cooling

Circulation pump, solaror

circulation or Solid-fuel

combustion vessel

Charging pump, indoor

External collect-fault signal

F9

Outdoor temperature

F8 T-collector (com. inlet)

F6 Warm-water storage

F5 Inlet HK2 (mixing circuit

Analogue remote control with

room sensor FBR-2

F1 Solid-fuel combustion vessel

F11 Inlet, heat pump

F12 Reference sensor, lower buffer storage

F14 Solar collector

F 15 Flow rate transmitter

F 17 Return, heat pump

Elect. heater supply
e.g.: NYM-I 5x xmm

Power enable/disable (230 V
e.g.:NYM 3x x mm

3

or

jumper³

module

3

2

~)

2

Normally-open switch
Normally-closed switch

Terminal X4 ground

3

Normally-open switch
Normally-closed switch

L1

X2.1
X2.2

L2

X2.3

L3
N

X2.4

Pe

X2.5

F1-red

X4.1

F2-blue

X4.2

X1.L

X1N

X1.Pe
X1.1

X1.2

X1.3
X1.4

X1.5
X1.6

X1.7
X1.8

X1.9
X1.10
X1.11

X1.12-A
X1.13-N
X1.14-Z

X1.15-L
X1.16-N
X1.17-Pe
X1.18-L
X1.19-N
X1.20

X1.21-L
X1.22-N
X1.23-Pe

X1.24-L open
X1.25-L closed
X1.26-N
X1.27-Pe

X1.28-L open
X1.29-L closed

X1.30-N
X1.31-Pe

X1.32-L
X1.33-N
X1.34-Pe
X1.35-L
X1.36-N
X1.37-Pe

X1.38-L
X1.39-N
X1.40-Pe
X1.41
X1.42

Pot. free

X1.43

X3.1
X3.2
X3.3
X3.4
X3.5
X3.6
X3.7
X3.8
X3.9
X3.10
X3.11
X3.12
X3.13

Terminal X2

Indoor unit

Inputs/outputs

(Merlin I/O circuit board)

X4

Terminal X1

5A/4A

A8

5/4A

A1

A2

A3

A10

A10

A12

A9

Terminal X3

F9
F8

F6
F5

FBR2

F1

F11
F12

F13
F14
F15
F17

Fig. 44: Terminal configuration

44

8.5 Circuit diagrams

L1

N

PE

T6,3A

11

12

14

1.S 1

A2 A1

K1C

11

14

12

/1.9C

11

14

12

K1C

/1.7E

4

X1

5

1 2

F1.

A2 A1

K2A

11

14

12

/3.8C

A2 A1

K2B

11

14

12

/4.14C

20

21

A2 A1

K1

21

24

22

/2.11C

31

34

32

/4.7C

41

44

42

/3.10C

11

14

12

/2.9C

N1.1/2.2F

L1.AUTO/2.2B

L1.HAND/2.2B

PE /2.2F

L1.R EL. PLA/2.2E

Auto Hand0

L N

L

N

PE

A

B

C

D

E

F

G

H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Function switch

SUPPLY

Flow monitor

or

jumper by

hot water meter

Power supply relays board

(Heat pump manager)

Circuit diagram 15.04.2011 page 1/8

Fig. 45: Circuit diagram electrical junction box EMF/EMT 1

45

weiss

WP

E1

E2

22

23

24

25

26

27

28

11

14

12

K10

/3.11E

6

X1

7

15

X1

16

17

18

X1

19

20

21

X1

22

23

24

X1

25

26

27

11

14

12

K7

/5.16E

N

L

PE

M1

N

L

PE

M2

Z

A

N

M3

Z

A

N

M4

A2 A1

K11

11

14

12

/4.5C

2.H4

21

24

22

K1

/1.5E

11

14

12

K1

/1.5E

L1.AUTO/1.17B

L1.AUTO/3.2B

N1.1/1.17F

N1.1/3.2F

K7/10_11/3.8D

L1.HAND/1.17B

L1.HAND/3.2B

PE /1.17F

PE /3.2F

L1.R E L.P LA/1.17E

L1.R E L.P LA/3.2A

E1 E 2

A2A1 A3 A4 A5

L L'

A

B

C

D

E

F

G

H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Circulation

pump HK 1

Circulation

pump HK 2

Mixer circuit

Switchingvalve

Hot-water usage

Hot-water

usage active

3-way mixer

Mixer HK2

Outputs relay board (Heat pump manager)

Inputs Relay board

(Heat pump manager)

Power

disable

Circuit diagram 15.04.2011 page 2/8

REMKO EMF / EMT

Fig. 46: Circuit diagram electrical junction box EMF/EMT 2

46

31

S

30

O

29

34

S

33

O

32

S

38

37

39

40

A2 A1

K9

11

14

12

/3.11C

11

14

12

K9

/3.14E

A2 A1

K10

11

14

12

/2.7C

11

14

12

K5A

/4.7E

8

X1

9

10

11

12

X1

13

14

28

X1

29

30

31

32

X1

33

34

35

X1

36

37

38

X1

39

40

Z

A

N

M5

11

14

12

K2A

/1.11E

A2 A1

K3

11

14

12

/6.12C

11

14

12

K5B

/4.8E

N

L

PE

M6

N

L

PE

M8

Z

A

N

M7

N

L

PE

M9

A2 A1

K4

11

14

12

/6.9C

41

44

42

K1

/1.5E

L1.AUTO/2.17B

L1.AUTO/4.2B

L1.HAND/2.17B

L1.HAND/4.2B

N1.1/2.17F

PE /2.17F

L1.R E L.P LA/2.17A

K7/10_11/2.7D

A10 A12

A9A6

A7

A

B

C

D

E

F

G

H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Outputs relay board (Heat pump manager)

enable2. heat source 4-way switching valve

2. heat source

Charging pump,

indoor module

Switching valve,

cooling

Circulation pump,

cooling

Circulation pump,

solaror circulation or

Solid-fuel combustion

vessel

Circuit diagram 15.04.2011 page 3/8

Fig. 47: Circuit diagram electrical junction box EMF/EMT 3

47

gelb

S

36

35

A2 A1

K5A

11

14

12

/3.6C

A2 A1

K5B

11

14

12

/3.4C

4.H2

11

14

12

K2B

/1.12E

1

X1

2

3

41

X1

42

43 11

14

12

K11

/2.8E

31

34

32

K1

/1.5E

L1.AUTO/3.17B

L1.AUTO/5.2B

N1.1/3.17F

N1.1/5.2F

L1.HAND/3.17B

L1.HAND/7.2D

E-S TAB/7.2E

N1.2/7.2F

A8

A

B

C

D

E

F

G

H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Power otput relay board (Heat pump manager)

Connections for optional module

electrical booster heater

Additional heat source

element active

External collector fault

Circuit diagram 15.04.2011 page 4/8

REMKO EMF / EMT

Fig. 48: Circuit diagram electrical junction box EMF/EMT 4

48

~230V IN

~230V Out

~15V IN

rotgrün

5.H1

CN11.1

CN11.3

CN71.1

CN71.3

CN72.1

CN72.3

S

CN23.5

CN23.6

S

CN23.3

CN23.4

1

2 3

4

TR 1

5.H3

A2 A1

K7

11

14

12

/2.6C

L1.AUTO/4.17B

N1.1/4.17F

A

B

C

D

E

F

G

H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Circuit diagram 15.04.2011 page 5/8

Power supplys COMM_KIT_PBA

FaultOperation

Fault

Operation

Fig. 49: Circuit diagram electrical junction box EMF/EMT 5

49

CN51.1

CN51.2

CN43.1

CN43.2

CN83.1

CN83.2

CN41.1

CN41.2

CN41.3

CN41.4

CN41.5

CN41.6

CN31.1

CN31.2

CN44.1

CN44.3

11

14

12

K3

/3.7E

R3 R 4 R 5

11

14

12

K4

/3.8E

KOMM_1/8.2A

MASS E /8.2B

0-10V/8.2C

KOMM_2/8.2A

A

B

C

D

E

F

G

H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Circuit diagram 15.04.2011 page 6/8

Heat/Cooling

Heater

pre-flow

Compressor

emergency stop

Compressor

enable

Fluid

coolant

Heater

return

Communications

Outdoor unit

Control signal

Outdoor unit

Sensor & control connections COMM_KIT_PBA

REMKO EMF / EMT

Fig. 50: Circuit diagram electrical junction box EMF/EMT 6

50

47n

1K

47n

1K

30 - 78°C

A2 A1

K8

13 14

21

3 4

5 6

/7.12C

21

3 4

5 6

K8

/7.6E

A2 A1

K6

13 14

/7.11C

21

3 4

5 6

/7.9C

13 14

K6

/7.4E

21

3 4

5 6

K6

/7.4E

C2

R2

C1

R1

1

X2

2

3

4

5

E-S TAB/4.17G

N1.2/4.17G

L1.HAND/4.17G

PE /3.17F

PE

N

L3

L2

L1

A

B

C

D

E

F

G

H

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Additional heating

fixed 92°C

1. level 2. level

Circuit diagram 15.04.2011 page 7/8

Additional heating

Module electrical additional heater (optional)

SUPPLY

Fig. 51: Circuit diagram electrical junction box EMF/EMT 7

51

REMKO EMF / EMT

H

G

F

E

D

C

B

A

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

KOMM_2/6.17A

KOMM_1/6.17A

0-10V/6.17B

MASS E/6.17B

X4

1

2

3

4

5

Sensor ground

6

7

8

9

10

11

12

13

14

15

16

Circuit diagram 15.04.2011 page 8/8

Control panel

Heat pump manager

4

3

2

1

Return, heat pump

Flow rate transmitter

Solar collector/

Solid-fuel combustion

Reference sensor, lower

Reference sensor

hot water meters

Reference sensor

Solid-fuel combustion

Analogue remote control

with room sensor FBR-2

(only HK 1 - direct HK)

Inlet HK2 (mixing circuit)

Warm-water storage

T-collector (com. inlet)

Outdoor temperature

vessel

buffer storage

vessel

X3

ws

bl

F15

1 3

FB R-2

2

F5 F6 F 8 F 9F11F12F14F17 F 1

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

Sensor inputs Relay board (Heat pump manager)

CAN +

CAN -

CAN L

CAN H

eBus -

eBus +

F17

F15

F14F14

F13

F12

F11

F1

F2

F3

F5

F6

F8

F9

Fig. 52: Circuit diagram electrical junction box EMF/EMT 8

52

8.6 Auxiliary relays and contactor function

Auxiliary
relays

K1C Activation of the flow monitor ... in emergency

K2A Setting the heat pump demand to OFF

K2B Contactor terminal K8 shut-off (second

K3 Setting the heat pump demand (com-

K4

CN 51.2

K5A Actuation of the switching valve for the 2nd

K5B Makes the zero potential contact available

K6 Electric heating contact, level 1 (6 kW) ... in normal operation

Function Use ... Found in the circuit

heating mode (Manual
mode)

... in normal operation

with a flow fault

level electric heating, 3 kW) with flow fault

pressor). Compressor ON, if K3 is deacti­vated and contact on the control board is
closed.

Setting the cooling release. Cooling ON if
K4 has activated and contact on the con­trol board is open.

heating source

for the demand of the 2nd heating source

(Automatic mode)

... in normal operation
(Automatic mode)

CN 83.1 und 83.2

... in normal operation
(Automatic mode)

CN 51.1

... in normal operation
(Automatic mode)

... in normal operation
(Automatic mode)

(Automatic mode) and
in emergency heating
mode (Manual mode)

diagram ...

Ä

on page 45

Ä

on page 45

Ä

on page 45

Ä

on page 47

Ä

on page 47

Ä

on page 47

Ä

on page 48

Ä

on page 51

K7 Release of a fault of the outdoor unit and

issue of the fault message "Heat pump
fault" in the display of the heat pump man­ager (contact opening input E2)

K8 Electric heating contact, level 2 (3 kW) ... in emergency

K9 Switching on of the charging pump in the

indoor module parallel to the output
cooling circulating pump/switching valve

K10 Enabling of the fault input E2 of the heat

pump manager ("Heat pump fault" contact
opening input E2) after the indoor unit
charging pump was switched on.

K11 External error message ... in normal operation

... in normal operation
(Automatic mode)

heating mode (Manual
mode)

... in cooling mode
(Automatic mode)

... in normal operation
(Automatic mode)

(Automatic mode)

Ä

on page 49

Ä

on page 51

Ä

on page 47

Ä

on page 47

Ä

on page 48

53

3

1

5

6

2

4

REMKO EMF / EMT

Fig. 53: Auxiliary relays

9 Commissioning

9.1

Fig. 54: Control panel

1. Mode switch

2. Green indicator light: outdoor module is acti-

3. Orange indicator light: operation 2nd heat

Position I: Normal operation

This switch turns on the system. The heat pump and a possible 2nd heat source (6 kW E-heater or boiler),
load- and weather-dependent, are turned on and off - as well as regulated - automatically.

Control panel

vated

source

4. Red indicator light: outdoor module failure

5. White indicator light: drinking water preparation
is activated

6. Heat pump manager (Control and display unit)

Position 0: OFF

Position II: Emergency-heat operation

This switch directly turns on all circulation pumps
and the 2nd heat source (9 kW E-heater or boiler),
bypassing the heat-pump manager. Use this posi­tion only if a serious malfunction of the heat pump
occurs (e.g.: a fault in the outdoor module or
in the heat-pump manager). This function might
also be helpful if heat is ever required and the out­door module has not yet been installed or or
placed in service.

54

NOTICE!

Make sure that no weather-driven control
occurs during emergency-heat operation.
Therefore, limit the inlet temperature at the
controller for the electric booster heater or at
the external controller for the boiler to a max­imum temperature matched to the boiler. (e.g.:
55 °C for floor heating-systems)!

NOTICE!

When the heat pump is switched off (position 0
on the function switch), the heating system is
switched off. There is no frost protection func­tion..

9.2 Notes for commissioning

The Multitalent heat pump manager serves to
operate and control the entire plant. The heat
pump manager itself is operated by the control
unit. The control console is connected to the basic
device and is located behind the flap on the indoor
module.

Home

A

Fig. 56: Control panel in detail

The rotary knob (A) can be used to toggle between
the displayed menu points or to change the set
values.

Pressing the Home button (B) always returns you
to the standard display.

Each of the four function keys (C) stand for one of
the four rows on the display. Pressing an F button
serves to select a menu item or set value.

After a power failure etc., the previously pro­grammed configuration can be accepted imme­diately by pressing the function button next to
"End". This also happens automatically after a
delay of 10 minutes.

B

C

C

B

A

Fig. 55: Control panel

The heat pump manager is controlled by means of
the following buttons.

n System 1 is pre-installed at the factory. After a

reset of the heat-pump manager, the parame­ters for System 1 are loaded.

n An intensive visual inspection is to be carried

out before the actual commissioning.

n Switch on the electrical supply.
n The following screen appears on the Multitalent

display:

End

Installation

Fig. 57: Display screen "Installation"

OK

55

REMKO EMF / EMT

n Check which system schematic is used (see

the hydraulic schematic in the heat-pump man­ager handbook).

n If the System 1 schematic is applicable, you

need only press the F-button next to End.
Should a different system schematic be
selected, press the F-button next to OK to
begin installation.

n The configuration in the installation level for the

selected hydraulics has to be completely pro­grammed with the parameters that go with
it (see the hydraulic schematic in the heat­pump manager handbook).

n The system has to be matched to the custom-

er's personal values (e.g. inlet temperature).

n The brief instructions supplied give an over-

view of how to set the most important values.

n After configuration, the system is to be run-in

and the measured values are to be recorded in
the commissioning report.

NOTICE!

The commissioning and programming of the
heat-pump manager may be carried out only
by an installer authorized by REMKO.

Level 0

Fr 23 Apr 10 16:05

T-external 19.0 °C
T-collector 36.2 °C

Heating

Home

Level 1

Main menu

End01

Terminal
Controller

Level 2

Controller

End01

Display

User
Time programme

Level 3

Display

End01

Plant

Hot water
Heating circuit 1

Please review the heat-pump manager manual
for important details about successful commis­sioning.

During commissioning, only a typical heat­manager pre-set is made. Individual settings
must be optimized for construction materials
and the practices of various users. Especially
during the first heating period.

9.3 Heat pump manager Multi­Talent Plus (heat flow
meters)

The Multitalent heat pump manager PLUS is
equipped with the following displays relevant for
the heat flow meters:

Level 4

Plant

End07

Flow volume 28 l/min
Current output 8070 W
Output day 30.2 kWh

Level 4 (continued)

Plant

End07

Output day 30.2 kWh
Output total 99 kWh
Error 00

Fig. 58: Display level

Specialist level

The heat pump menu is found in the specialist
level. The parameters for the heat flow meters are
configured here.

Display level

The displays relevant to the heat flow meters are
called up with the following steps on the heat pump
manager.

56

Level 0

Fr 23 Apr 10 16:05

T-external 19.0 °C
T-collector 36.2 °C
Heating

Level 1

Main menu

End01

Terminal
Controller

Level 2

Controller

End04

Time-Date
Service

Specialist

Level 3

Specialist

End02

Heating appliance
Cascade

Heat pump

Level 0

Fr 23 Apr 10 16:05

T-external 19.0 °C
T-collector 36.2 °C
Heating

Home

Level 0

Fr 23 Apr 10 16:05

Current output 8070 W
T-collector 36.2 °C
Heating

Level 0

Fr 23 Apr 10 16:05

Output day 30.2 kWh
T-collector 36.2 °C
Heating

Level 4 (continued)

Heat pump

End05

E1 function 02
E2 function 03
E15 function 09

Level 4

Heat pump

End12

Impulse rate 1
Impulse unit l/Imp
Min FlowVol 12.0 l/min

Fig. 59: Specialist level

Including in display of favourites

As many as 10 display values can be copied to
level 0. The system operator can quickly access
these "favourites" for control purposes without
involving himself with the heat pump manager. The
possible heat flow meter displays included in the
favourite menu are shown in the following section.

Level 0

Fr 23 Apr 10 16:05

Output total 99 kWh
T-collector 36.2 °C
Heating

Fig. 60: Including in display of favourites

57

REMKO EMF / EMT

10 Care and maintenance

Regular care and maintenance serves to ensure
trouble-free operation and long service-life of the
heat pump system.

Care

n The indoor and outdoor modules must be kept

free of soiling, vegetation and other deposits.

n The device is to be cleaned with a damp cloth.

In doing so, it is to be ensured that no caustic,
abrasive or solvent-based cleaning products
are used. Use of powerful water jets is to be
avoided.

n The fins on the outdoor module are to be

cleaned at least once a year.

Maintenance

n To perform the statutory seal test, it is neces-

sary to arrange an annual maintenance con­tract with an appropriate specialist firm.

NOTICE!

As the refrigerant capacity exceeds 3 kg, an
annual seal inspection must be made of the
refrigerant circuit by a firm specializing in this
field. A heating system should always be serv­iced annually. Therefore, we recommend
arranging for a service contract that includes
the seal inspection.

58

11 Troubleshooting and customer service

The unit has been manufactured using state-of-the-art production methods and tested several times to
ensure its correct function. However, in the event that malfunctions should occur, the device should be
checked against the following list. Please inform your dealer if the unit is still not working correctly after all of
the functional checks have been performed.

Fault Possible causes Remedial measures

The heat pump does
not start or switches
itself off

Heat circuit pump fails
to switch off

Heat circuit pumps fail
to switch on

Power outage, under-voltage Check the voltage and, if necessary,

wait for it to come back on

Defective mains fuse Master switch off Exchange mains fuse, master switch on

Damaged mains cable Repair by specialist firm

Power company off-period Wait until the power-company off-

period is over and the heat pump starts
up as required

Operational temperature limits too low
or too high

Set-point temperature exceeded Incor­rect mode

Disconnect the outdoor module, then

Incorrect pump switching Arrange to have pump switching

Incorrect mode set Check mode

Control PCB fuse in indoor module
switching cabinet faulty

Observe temperature ranges

The set-point temperature has to be
higher than the heat-source tempera­ture, check mode

establish the correct clamp order using
the connection plan Re-establish
voltage to the outdoor module. Also
make sure that the protective earth is
connected correctly.

checked in "heating circuit" expert level

Exchange the fuse on the left side of
the control PCB

Incorrect heating program set Check heating program We recom-

mend the operating mode "heat" in the
cold heating season

Temperature overlapping, e.g. external
temperature greater than room tem­perature

Troubleshooting

Troubleshooting A corresponding error code
appears on the heat pump manager display in the
event of a fault in the heating system. The mean­ings of the displayed error codes can be taken
from the table on the next page. The system
should be restarted after a brief shut-down after
the fault has been rectified (turn the mode switch
off then on again). Subsequently the heat-pump
manager will re-start, automatically reconfigure and
continue to operate with the set values.

59

Heat pump manager error codes

The error codes listed in the table can be called up
in the display of the heat pump manager. See Con­troller ---> Displays ---> System ---> Errors. If an
error with a corresponding code is present, an
error scan can be performed by pressing the
assigned function key. After a short period of time
the 10 most recent faults, including the date and
time, are listed with the exception of error codes 54
and 55. They are treated as recurring messages
and are not listed in the error scan.

Observe temperature ranges

REMKO EMF / EMT

Error codes Fault description / note

E 51 Notice that annual maintenance is needed

E 54 Message: “Heat pump fault”.The flow monitor has tripped. A flow problem has occurred.

Possible causes are air in the system, a clogged dirt trap or a defect of the charging pump
in the indoor module. If the red indicator lamp illuminates, there is a problem in the outdoor
module which can only be remedied through customer service.

E 55 “Power company shut-off” message. Information that the power company has begun an

off-period. The heating pump is switched off. The second heating appliance is switched on
as necessary. The electrical heating must be locked on-site using a relay switch.

E 69 Failure or short in supply sensor HK2 (mixing circuit). Sensor F5

E 70 Failure or short inlet pipe WP Multi-purpose sensor 1. Sensor F11

E 71 Failure or short in lower buffer sensor. Sensor F12

E 75 Failure or short, external sensor. Sensor F9

E 76 Failure or short, domestic warm water sensor. Sensor F6

E 78 Failure or short, collector sensor. Sensor F8

E 80 Failure or short, FBR2 analogue remote control (for HK 1)

E 81 EEPROM error. The valid value has been replaced by the default value. Check parameter

values!

E 90 Address 0 and 1 on bus. Bus codes 0 and 1 may not be used simultaneously.

E 91 Bus code assigned. The set bus code is already being used by another device.

E 135 Failure or short, lower WW buffer sensor reference sensor solar) . Sensor F12

E 137 Failure or short in collector sensor 1, sensor F14 (PT 1000) or sensor solid-fuel combustion

vessel

E 140 Failure or short in return line (cooling-mode control sensor) Sensor F17

E 200 - E 207 Error communication heating appliance 1 to WE 7

E 220 - E 253 Error communication digital remote control BM 0 to BM 15

E 240 Error communication manager

E 241 Error communication (individual) heating appliances

E 242 Error communication mixer

E 243 Error communication solar

60

Outdoor unit error display

1

Fig. 61: Display on outdoor module

1. Display screen

Display code Meaning

E177 Emergency mode

E202 Abnormal communication between the HYDRO-unit and the outdoor unit

E203 Abnormal communication between MAIN MICOM external and INVERTER

MICOM

E221 Error in the external temperature sensor (short / open)

E237 Error inductor temperature sensor (short / open)

E251 Error outlet temperature sensor (kurz/offen)

E401 Coil of the unit hydro-frozen at cooling mode

E404 Coil of the HYDRO-unit in heating mode overloaded

E416 Outdoor temperature overheat

E440 Outdoor temperature of about 30 °C in heating mode

E441 Outdoor temperature of below 5°C in cooling mode

E458 Error 1. fan

E475 Error 2. fan (only 14 kW model)

E471 OTP-Error

E460 Communication error voltage

E461 Error Komp-Start

E464 Over current IPM (O.C)

E465 Compressor overloaded

E466 Error DC-Link over-/undervoltage

E467 Error compressor rotation

E468 Current sensor error

E469 Error DC-Link voltage sensor

E556 Mismatch capacity between HYDRO and outdoor unit

See

Ä

‘Heat pump manager error codes ’ on page 59 above.

61

15

14

6

13

16

5

1

2

18

7

4

10

11

12

8

E-

3

9

19

17

REMKO EMF / EMT

12 Exploded view and spare parts

12.1 Exploded view and spare parts list outdoor module

Fig. 62: Exploded view outdoor module EMF 100 / EMT 100

62

We reserve the right to modify the dimensions and constructional design as part of the ongoing technical­development process.

Spare parts list outdoor module EMF / EMT 100

No. Designation EMF 100 EMT 100

From series: 739B5001... 1064B5001...

EDP-Number EDP-Number

1 Compressor 1120280 1120280

2 Laminated heat-exchanger 1120281 1120281

3 Four-way switching valve 1120282 1120282

4 Shut-off valves 1120283 1120283

5 Fan blade 1120284 1120284

6 Cover panel 1120285 1120285

7 Side panel, left 1120286 1120286

8 Front panel 1120287 1120287

9 Grille, front 1120288 1120288

10 Side panel, right 1120289 1120289

11 Cover, right 1120290 1120290

12 Grille, rear 1120291 1120291

13 Fan motor 1120292 1120292

14 Sensor evaporator / compressor sensor-set 1120293 1120293

15 Sensor hot gas / Sensor outdoor temperature-set 1120294 1120294

16 Transformer 1120296 1120296

17 Elektronic expansion valve 1120297 1120297

18 Main board 1120298 1120298

19 Display 1120299 1120299

When ordering spare parts, please state the computerised part no., device number and device type (see
name plate)!

63

REMKO EMF / EMT

12.2 Exploded view and spare parts list indoor module

Exploded view indoor module EMF 100

16

20

21

17

14

22

19

2

3

18

A

1

1

1

7

13

15

4

23

5

10

14

9

32

24 252627

Fig. 63: Exploded view indoor module EMF 100

A

Accessory Set (

We reserve the right to modify the dimensions and constructional design as part of the ongoing technical­development process.

Ä

‘Parts and fittings, set’ on page 68)

28

29

30

31
33

6

8

12

64

Spare parts list indoor module EMF 100

No. Designation EMF 100

From series: 738B5001 EDP-number

1 Housing 1120009

2 Front panel 1120006

3 Door with hinge 1120005

4 Housing for controls 1120004

5 Controls, complete 1120243

6 Control module 1120029

6 Control module (in the form of a hot water meter) 1120190

7 Heat exchanger (condenser) with insulation 1120151

8 Pipe assembly, complete with insulation 1120242

9 Circulation pump Grundfos 1120241

10 Flow monitor 1120154

10 Flow meter (in the form of a hot water meter) 1120193

12 Fill/drain valve 1120028

13 Bleeder 1/4“ 1120059

15 Brass plug 2“ 1120155

23 Relay board, WP-Manager (Merlin I/O-Platine) 1120030

23 Relay board, WP-Manager (in the form of a hot water meter) 1120194

24 Control board 252001

25 Mounting 1120300

26 Sensor terminal block 1120244

27 White indicator light 1120027

28 Red indicator light 1105363

29 Orange indicator light 1105512

30 Green indicator light 1105514

31 Mode switch 1120157

32 Relays (Finder) 1120095

33 Retrofitting kit electric heating 1120147

Spare parts (not illustrated)

Liquid sensor, cooling circuit / return / inlet-set 1120306

Socket for service module 1120032

Electric booster-heating, 2", max. 9 kW 1120160

When ordering spare parts, please state the computerised part no., device number and device type (see
identification plate)!

65

REMKO EMF / EMT

Exploded view indoor module EMT 100

24

23

22

17

12

21

25

26

32

14

23

9

23

8

24 252627

27

28

29

A

30

10

31
33

11

19

16

13

7

15

2

3

4

7

5

Fig. 64: Exploded view indoor module EMT 100

A

Accessory Set (

We reserve the right to modify the dimensions and constructional design as part of the ongoing technical­development process.

Ä

‘Parts and fittings, set’ on page 68)

66

Spare parts list indoor module EMT 100

No. Designation EMT 100

From series: 1065B5001 EDP-number

1 Housing 1120301

2 Front panel, upper 1120302

3 Front panel, centre 1120303

4 Front panel, lower 1120304

5 Base-feet, set 1120245

6 Buffer storage with insulation 1120246

7 Fill/drain valve 1120028

8 Housing for controls 1120247

9 Controls, complete 1120243

10 Control module 1120029

10 Control module (in the form of a hot water meter) 1120190

11 Circulation pump 1120241

12 Heat exchanger with insulation 1120151

13 Pipe assembly, complete with insulation 1120305

14 Immersion sensor 260090

15 3-way switching valve, hydraulic, lower part 260070

16 Flow monitor 1120154

16 Flow meter (in the form of a hot water meter) 1120193

17 Electric booster-heating, 2", max. 9 kW 1120160

19 Bleeder 1/4“ 1120059

28 Relay board, WP-Manager (Merlin I/O-Platine) 1120030

28 Relay board, WP-Manager (in the form of a hot water meter) 1120194

29 Control board 252001

30 Mounting 1120007

31 Sensor terminal block 1120244

32 Red indicator light 1105363

33 Green indicator light 1105514

34 White indicator light 1120027

35 Orange indicator light 1105512

36 Mode switch 1120157

37 Relays (Finder) 1120095

38 Retrofitting kit electric heating 1120148

When ordering spare parts, please state the computerised part no., device number and device type (see
identification plate)!

67

REMKO EMF / EMT

No. Designation EMT 100

Spare parts (not illustrated)

Actuator for 3-way switching valve 1120054

Valve-core for 3-way switching valve 1120001

Liquid sensor, cooling circuit / return / inlet-set 1120306

Quadrelays ( normally open) 230V 1120307

Socket for service module 1120032

When ordering spare parts, please state the computerised part no., device number and device type (see
identification plate)!Bestandteile Zubehör-Set

Parts and fittings, set

No. for

EMF 100

EDP-number

16 21 Fittings set, complete 260005

14 14 Immersion sensor 260090

17 22 Dirt trap 1120013

18 23 Ball valve 1“, red 1120011

19 24 Ball valve 1“, blue 1120012

20 25 Contact sensor 260100

21 26 Safety assembly 1120010

22 27 External sensor 1120014

When ordering spare parts, please state the computerised part no., device number and device type (see
identification plate)!Bestandteile Zubehör-Set

No. for

EMT 100

Designation

EMF 100

EMT 100

68

13 Temporary shut-down

The system may not be switched off at the mains
power supply even if the heating system is not
used for heating purposes over an extended period
(e.g. holidays)!

n The system is to be switched to "Stand-by"

mode during temporary shut-down periods.

n Heating phases can be programmed for the

duration of the period of absence.

n The previous operating mode has to be

switched back on when the shut-down phase
is over.

n Instructions for changing the mode appear in

the corresponding chapter of the heat-pump
manager's manual.

NOTICE!

In "Standby" , the heat pump is in standby
mode. Of the entire system, only the frost-pro­tection function s activated.

15 Environmental protec-

tion and recycling

Disposal of packaging

All products are packed for transport in environ­mentally friendly materials. Make a valuable contri­bution to reducing waste and sustaining raw mate­rials. Only dispose of packaging at approved
collection points.

Disposal of equipment and components

Only recyclable materials are used in the manufac­ture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not dis­posed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recy­cling specialists or at collection points.

14 Transport and pack-

aging

The devices are supplied in a sturdy shipping con­tainer. Please check the equipment immediately
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.

WARNING!

Plastic films and bags etc. are dangerous toys
for children.

Why:

- Leave packaging material are not around.

- Packaging material may not be accessible to
children!

69

REMKO EMF / EMT

16 EC- Declaration of Con-

formity

We do hereby declare that the devices named
below, produced and sold by us, satisfy the rele­vant basic requirements of the EC guidelines, the
EC safety standards and other product-specific EC
standards.

Name of Manufacturer and name of CE-repre­sentative:

REMKO GmbH & Co. KG

Air conditioning and heating technology

Im Seelenkamp 12

D - 32791 Lage

Equipment (machinery) - Implementation:

Inverter heat pump with refrigerant R410A

Series / Designation:

EMF 100, EMT 100

Series / Class Number:

739B5001, 1064B5001, 738B5001 und
1065B5001

Applicable regulations (EC-Directive)

Applicable Standards:

(Harmonized EN)

EN 378-1:2008 - Cooling-devices and heat-pump
safety-and environment-related requirements

EN 378-2:2008, EN 378-3:2008, EN 378-4:2008

EN 50366:2003 - Electrical devices for household
use and similar purposes - electromagnetic fields

EN 55014-1:2010-02 - Electromagnetic compati­bility - requirements for household appliances,
electric tools and similar electrical devices (earlier:
VDE 0875)

EN 55014-2:1997 / A1:2001 (Category IV) - Safety
of electrical devices for household use and similar
purposes (earlier: VDE 0700)

EN 60335-1: 2002 / A11: 2004 / A1: 2004

EN 60335-2-40: 2003 / A11: 2004 / A12: 2005 /
A1: 2006

EN 61000-3-2:2006 - Electromagnetic compatibility
(EMV, earlier: VDE 0838)

EN 61000-3-3:1995 / A1:2001 / A2:2005

Lage, 25. February 2010

REMKO GmbH & Co. KG

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

Signature Product Manager

MA - RL 2006/42/EC - Machine directive

NS - RL 2006/95/EC - Low-voltage directive

EMV – RL 2004/108/EC - Electro magnetic fields

EnVKV - RL 92/75/EC - Energy Labelling directive

EG 97/23/EG - Pressure Equipment Directive

70

17 General terms

Annual power input factor

The annual power input factor indicates the power
input (e.g. electrical energy) required in order to
achieve a certain benefit (e.g. heating energy). The
annual power input factor includes the energy
required for auxiliary drives. Calculation of the
annual power input factor is undertaken according
to VDI – Directive 4650.

Bivalent mode

The heat pump provides the entire heating energy
down to a predetermined outdoor temperature
(e.g. 0°C). If the temperature drops below this
value, the heat pump switches off and the secon­dary heating appliance takes over the heating, e.g.
a heating boiler.

Coefficient of performance

The current ratio of thermal output produced by the
heat pump to the consumed electrical power is
referred to as the coefficient of performance, as
measured under standardised boundary conditions
according to EN 255 / EN 14511. A coefficient of
performance of 4 means that a usable thermal
output amounting to 4-times the electrical power
consumption is available.

Energy supply company switching

Certain energy supply companies offer special tar­iffs for the operation of heat pumps.

Evaporator

Heat exchanger on a refrigerant plant which uses
the evaporation of a working medium in order to
extract heat from its environment at low tempera­tures (e.g. the outdoor air).

Expansion valve

Heat pump component for lowering the condensing
pressure on the vapour tension. In addition, the
expansion valve regulates the quantity of injected
refrigerant in relation to the evaporator load.

Heat carrier

Liquid or gas medium (e.g. water, brine or air), in
which heat is transported.

Heat pump system

A heat pump system consists of a heat pump and
a heat source system. For brine and water/water
heat pumps, the heat source system must be
made available separately.

Compressor (condenser)

Unit designed for the mechanical conveyance and
compression of gasses. Compression serves to
significantly increase the pressure and tempera­ture of the medium.

Condenser

Heat exchanger on a refrigerant plant which lique­fies a working medium in order to transmit heat to
its environment (e.g. the heating system).

Defrost

At outdoor temperatures below 5°C it is possible
that ice may form on the evaporators of air/water
heat pumps. The removal of this ice is referred to
as defrosting and is undertaken by supplying heat,
either regularly or as requirements dictate. Air/
water heat pumps with circuit reversal are distin­guished by their requirements-based, quick and
energy-efficient defrosting system.

Heat requirement assessment

A precise dimensioning of the system must be car­ried out for heat pump systems in order to maxi­mise efficiency. Calculation of the heat require­ment is undertaken according to national
standards. However, approximate requirements
can be determined based on the W/m² tables mul­tiplied by living space to be heated. The result of
this is the overall heat requirement, which includes
the transmission heat requirement and the infiltra­tion heat loss.

Heat source

Medium from which the heat pump derives heat, in
other words, soil, air and water.

Heating output

Flow of heat emitted from the liquefier to the envi­ronment. The heating output is the sum of the elec­trical power consumed by the condenser and the
heat flux obtained from the environment.

71

REMKO EMF / EMT

Inverter

Power regulator which serves to match the speed
of the compressor motor and the speed of the
evaporator fans to the heating requirement.

Limit temperature / bivalence point

Outdoor temperature where the secondary heating
appliance cuts in under bivalent operation.

Monovalent mode

In this mode, the heat pump is the sole heating
appliance in the building all year round. Monova­lent mode is primarily used in combination with
brine/water and water/water heat pumps.

Noise

Noise is transmitted in media such as air or water.
Essentially there are two types of noise, airborne
sound and solid-borne sound. Airborne sound is
transmitted entirely via the air. Solid-borne sound
is transmitted in solid materials or liquids and is
only partially radiated as airborne sound. The
audible range of sound lies between 20 and
20,000 Hz.

Refrigerant

The working medium used in a refrigerant plant,
e.g. heat pump, is referred to as the refrigerant.
The refrigerant is a liquid which is used for thermal
transfer in a refrigeration plant and which is able to
absorb heat by changing its state at low tempera­tures and low pressures. A further change of state
at higher temperatures and higher pressure serves
to dissipate this heat.

Seal inspection

System operators are obliged to ensure the pre­vention of refrigerant leakage in accordance with
the directive on substances that deplete the ozone
layer (EC 2037/2000) and the Regulation on Cer­tain Fluorinated Greenhouse Gases (EC
842/2006). In addition, a minimum of one annual
service and inspection must be carried out, as well
as a sealing test for refrigerating plants with a
refrigerant filling weight over 3 kg.

Seasonal performance factor

The seasonal performance factor relates to the
ratio of heat content delivered by the heat pump
system to the supplied electrical energy in one
year. It may not be compared to the performance
number. The seasonal performance factor
expresses the reciprocal of the annual power input
factor.

Single energy-source mode

The heat pump covers a large proportion of the
required thermal output. On a few days per year an
electrical heating coil supplements the heat pump
under extremely low outdoor temperatures. Dimen­sioning of the heat pump for air/water heat pumps
is generally based on a limit temperature (also
known as balance point) of approx. -5 °C.

Sound pressure level

The sound pressure level is a comparable charac­teristic quantity for the radiated acoustic output of a
machine, for example, a heat pump. The noise
emission level at certain distances and acoustic
environments can be measured. The standard is
based on a sound pressure level given as a nom­inal noise level.

Refrigerating capacity

Heat flux extracted from the environment by the
evaporator (air, water or soil).

Regulations and guidelines

The erection, installation and commissioning of
heat pumps has to be undertaken by qualified spe­cialist engineers. In doing so, various standards
and directives are to be observed.

Split AC unit

Design where one part of the device is positioned
outdoors and the other inside the building. Both
units are connected to each other by a refrigerant
pipe.

Storage tank

The installation of a hot-water storage tank is gen­erally recommended in order to extend the running
time of the heat pump under low heat require­ments. A storage tank is required for air/water heat
pumps in order to bridge off-periods.

72

Support

The German Reconstruction Loan Corporation
supports ecologically-sound construction and mod­ernisation of domestic buildings for private individ­uals. This includes heat pumps which can be sup­ported in the form of loans. The German Federal
Office of Economics and Export Control (BAFA)
subsidises the installation of effective heat pumps
(please refer to: www.kfw.de und www.bafa.de).

73

REMKO EMF / EMT

18 Index

A

Adding refrigerant.............................................. 37

C

Charging pump, motor protection...................... 12

Charging pump, pump-characteristic curves..... 12

Coefficient of performance................................... 9

Condensate draining and ensured discharge.... 30

Connection diagram........................................... 44

Contact sensor................................................... 40

COP..................................................................... 9

D

Disposal of equipment....................................... 69

E

Electrical connection

Indoor module............................................... 38

Outdoor module............................................ 39

Environmental protection................................... 69

External sensor.................................................. 40

G

Greenhouse gas according to Kyoto protocol...... 9

I

Installation

Indoor module............................................... 27

Outdoor module............................................ 28

Intended use........................................................ 6

L

Leak testing........................................................ 35

M

Minimum distances for the outdoor modules..... 29

O

Overall sound pressure levels............................ 14

P

Pipe-outlet spacing............................................ 10

Pipe-socket arrangement................................... 10

Pumping down to vacuum.................................. 35

S

Safety

Dangers of failure to observe the safety

notes............................................................... 5

General........................................................... 5

Identification of notes...................................... 5

Notes for inspection........................................ 6

Notes for installation....................................... 6

Notes for maintenance.................................... 6

Personnel qualifications.................................. 5

Safety-conscious working............................... 6

Safety notes for the operator.......................... 6

Unauthorised modification ............................. 6

Unauthorised replacement part manufacture

Setting up

Indoor module............................................... 27

Sound intensity.................................................. 14

Sound power level............................................. 13

Sound pressure level......................................... 13

Spare parts order......................................... 63, 65

T

Temperature sensors......................................... 40

Terminal configuration....................................... 44

Troubleshooting................................................. 59

W

Warranty.............................................................. 7

.. 6

74

REMKO INTERNATIONAL

… and also right in your neighbourhood!
Make use of our experience and advice

REMKO GmbH & Co. KG
Air conditioning and heating technology

Im Seelenkamp 12 D-32791 Lage
Postfach 1827 D-32777 Lage
Telephone [phone]
Telefax [phone]
E-mail [e-mail]
Website www.remko.de

Consulting

Thanks to intensive training,
our consultants are always
completely up-to-date in terms
of technical knowledge. This has
given us the reputation of being
more than just an excellent,
reliable supplier:
REMKO, a partner
helping you find solutions to
your problems.

Distribution

REMKO offers not just a well
established sales network both
nationally and internationally, but
also has exceptionally highly­qualified sales specialists.

-

REMKO field staff are more than
just sales representatives: above
all, they must act as advisers to
our customers in air conditioning
and heating technology.

SFlbCustomer Service

Our equipment operates
precisely and reliably. However,
in the event of a fault, REMKO
customer service is quickly at
the scene. Our comprehensive
network of experienced dealers
always guarantees quick and
reliable service.

We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!