REMKO KWK 220, KWK 130, KWK 200, KWK 280, KWK 360 Operation,technology,spare Parts

REMKO KWK / KWK-ZW

KWK 130, KWK 140, KWK 200, KWK 220,
KWK 280, KWK 300, KWK 360, KWK 420,
KWK 590, KWK 680, KWK 740, KWK 870
KWK 130ZW, KWK 140ZW, KWK 200ZW, KWK 220ZW,
KWK 280ZW, KWK 300ZW, KWK 360ZW, KWK 420ZW
KWK 590ZW, KWK 680ZW, KWK 740ZW, KWK 870ZW

Cold water wall- and ceiling units
Cold water wall- and ceiling units for installation in partition walls
and suspended ceilings

Operation · Technology · Spare parts

Edition GB – N05

Contents

Safety notes

Environmental protection and recycling

Transportation and packaging

Guarantee

Intended use

Unit description

System layout

Operation

Shutdown

Care and maintenance

Troubleshooting and customer service

Installation Instructions for qualified
personnel

Installation

4

4

4

5

5

5

6

7

7

8-9

10

11-14

14-16

Condensate drainage connection

Electrical wiring

Electrical drawings

Leak testing

Before commissioning

Commissioning

Unit dimensions

Exploded view of the unit

Spare parts list

Technical data

Services

Carefully read this operating manual prior to commissioning / using
the units!

16-17

17-18

20-21

22-23

22-23

24-27

28-29

18

18

19

19

This manual is an integral part of the unit and must always be kept
in the vicinity of the installation location or on the unit itself.
This operating manual is a translation of the German original.

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

3

REMKO KWK / KWK-ZW

Safety notes

Carefully read the operating manual
before placing the unit in service
for the first time. It contains
useful tips and notes as well
as hazard warnings to prevent injury
to persons or material damage .
Failure to follow the directions
in this manual can endanger
persons, the environment and
the equipment itself and will void
any claims for liability.

■

Keep this manual close to
the units.

■ The units and components

should not be exposed to any
mechanical load, and extreme
levels of humidity or sunlight.

■ Only qualified personnel may

set up and install the units
and components.

■ The set-up, connection, and

operation of the unit and its
components must take place
in accordance with the operating
conditions stipulated in this
manual and comply with all
applicable local regulations.

■ Mobile units must be set up

securely on suitable surfaces and
in an upright position. Stationary
units must be permanently
installed for operation.

■ Modification of the units

and components supplied by
REMKO is not permitted and
can cause malfunctions.

■ Units and components may

not be operated in areas where
there is an increased risk of
damage. Observe the minimum
clearances.

■ The electrical power supply is to

be adapted to the requirements
of the units.

■ The operational safety

of the units and components
is only assured if they are
fully assembled and used as
intended. Safety devices may
not be modified or bypassed.

■ Do not operate units or

components with obvious
defects or signs of damage.

■ All housing parts and unit

openings, e.g. air inlets and
outlets, must be free from
foreign objects, liquids, or gases.

■ The units and components must

be kept at an adequate distance
from flammable, explosive,
combustible, abrasive and dirty
areas or atmospheres.

■ Contact with some parts

of the unit or components can
result in burns or other injuries.
Wearing appropriate protective
clothing is necessary to avert
risks.

■ Only authorised and trained

persons are permitted to access
and operate the units and
components.

■ Installation, repair and

maintenance work may only
be carried out by authorised
specialists. Visual inspections
and cleaning can be performed
by the operator as long
as the unit is disconnected from
the power.

■ To preclude any risks to persons

originating from the units,
appropriate precautions must
be taken when installing,
repairing, maintaining, cleaning
or working on the units.

Environmental
protection 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.

Disposing of the units
and their components

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

Transportation
and packaging

The units are shipped in sturdy
transport packaging. Immediately
check the units on delivery and
make a note of any damage or
missing parts on the delivery note.
Inform the forwarding agent and
contractual partner.

Claims under guarantee made at
a later date will not be accepted.

4

Guarantee

As a prerequisite for any
guarantee 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 guarantee conditions are
listed in the "General terms and
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.

Intended use

Depending on the model and
the equipment, the units are only
intended to be used as a cold
water drain to cool or warm
the operating medium water
or a water-glycol mixture within
a closed medium cycle.
Any different or additional
use is a non-intended use.
The manufacturer / supplier
assumes no liability for damages
arising from non-intended use.
The user bears the sole risk in such
cases.
Using the equipment as
intended also includes working
in accordance with the operating
manual and installation
instructions and complying with
the maintenance requirements.

Unit description

In cooling mode the unit (chilled
water outlet) extracts the heat
from the interior room to be
cooled into the fin register
and passes it on to the cold
operating medium - water or
a mix of water and glycol - within
a closed medium cycle. As a result
of the heat exchange, the medium
heats up and the emergent
air cools the room down.
In heating mode, a warm
operating medium warms
the room to be heated.
The medium cools down as a result
of the heat exchange.
A valve assembly, which routes
the operating medium through
the register (energy is given up)
or past the resister (energy is
not given up), is used to control
the cooling or heating capacity.

Diagram of a 2-conductor system medium cycle

Recirculating fan

M

Cooling register

Diagram of a 4-conductor system medium cycle (with heating register)

Recirculating fan

Cooling
register

M

Cooling register connection

Medium inlet Medium outlet

The unit is designed for use
indoors in the lower wall area
(vertical installation) and for ceiling
installation (horizontal installation).
Operation is either individually
or in groups using a room
temperature controller or via
the building management system.
The unit consists of a fin heat
exchanger, circulation fan,
controller and two condensate
trays for horizontal and vertical
installation.

The available accessories
include room temperature
controllers for installation in
the unit or on the wall, heating
coil for connection to a 4-wire
system, valve assembly cooling,
fan modules, air inlet plinth,
duct parts, grille and condensate
pumps.

Medium inlet
connection

M

Valve assembly

(accessories)

Medium outlet
connection

M

Cooling valve
assembly (accessory)

Heating register
(accessory)

M M

Medium inlet Medium outlet

Heating register connection

3-way or 2-way
valve assembly
heating (accessory)

5

REMKO KWK / KWK-ZW

System layout

The unit is designed
for a 2-conductor system.
The unit can easily be upgraded
to a 4-conductor system using
a heating coil available as
an accessory.

The 2-conductor system has
2 medium pipes (conductors:
supply and return flow) for
cooling using a cold medium and
2 medium pipes for heating using
a warm medium. In cooling mode
the combined cooling / heating
heat exchanger in the indoor unit
extracts the heat from the room air
by absorbing it into the operating
medium. A circulation pump
transports the heated medium to
a chiller which extracts the heat
from the medium in an evaporator
and then passes it on to the
outside air via a cooling cycle in
a condenser. The cooled operating
medium is then fed in once again
to the unit medium circuit.

Example of system layout of 2-conductor system (heat pump system)

Indoor area 1

Chilled / heating water
Consumer

Condensate
collecting drainage

Condensate

Room temperature controller Room temperature controller Room temperature controller

Outdoor area

Inverter heat pump
Outdoor unit

Not exhaustive

Indoor area 2 Indoor area 3

Chilled / heating water
Consumer

Condensate

pipe

Refrigerant
pipes

pipe

Medium piping
Cooling or heating mode

Inverter heat
pump
Indoor unit

Chilled / heating water
Consumer

Condensate

Buffer tank

pipe

With 2-conductor systems, which
are used for cooling or heating,
the heating capacity of cold water
air-conditioning systems can be
generated through a chiller with
heat pump function or, in the case
of heating systems, through
a boiler or heat pump and fed into
the circuit. In heating operation,
the indoor unit can deliver the heat
from the operating medium
to the room air.

With 4-conductor systems, which
are used for cooling or heating,
in one system, both a cooling
capacity from a chiller and
heating capacity from a separate
heating system on the indoor
units in an another system
are simultaneously present.

Example of system layout of 4-conductor system (cold water air conditioning system)

Indoor area 1

Chilled / heating water
Consumer

Condensate
collecting drainage

Condensate

Room temperature controller Room temperature controller Room temperature controller

Outdoor area

Chiller

Indoor area 2 Indoor area 3

Chilled / heating water
Consumer

Condensate

pipe

Medium piping
cooling mode

pipe

Heating room

Chilled / heating water
Consumer

Condensate

pipe

Medium piping
heating mode

Medium outlet

Boiler

Medium inlet

Not exhaustive

6

Operation

The unit can be easily operated
with the room temperature
controller available as an accessory
or a controller to be provided
by the customer. It is also possible
to activate the system using
a building management system.

Use the separate operating manuals
for this purpose.

The controller is connected to one
or more units by a cable. If a group
controller is used the maximum
current load must be observed.

Precision room temperature controller

Wall mounting

Room temperature controller

Installation in the unit

Room temperature controller

Wall mounting

TIP

Help by reducing energy
usage in stand-by mode!
If the unit, the system
or the components are not
being used, we recommend
disconnecting the power
supply. Our recommendation
does not apply to safety
relevant components.

Shutdown

Temporary shutdown

1. Let the unit run for 2 to
3 hours in circulation mode,
or in cooling mode at maximum
temperature, to extract any
residual humidity from the unit.

2. Shut down the system using
the controller.

Individual control

Controller

provided by

the customer

Group activation

CBCS

Switching relay

3. Switch off the power supply
to the unit.

4. Check the unit for visible
signs of damage and clean
it as described in the "Care and
maintenance" chapter.

Permanent shutdown

Ensure that units and components
are disposed of in accordance with
local regulations, e.g. through
authorised disposal and recycling
specialists or at collection points.

REMKO GmbH & Co. KG or your
contractual partner will be pleased
to provide a list of certified firms
in your area.

Controller

provided by

the customer

CBCS

7

REMKO KWK / KWK-ZW

Care and maintenance

Regular care and maintenance
ensure the trouble-free operation
and long service life of the unit.

CAUTION

Care and maintenance work may
only be carried out if the unit is
disconnected from electrical power.

Care

■

Ensure the unit is protected
against dirt, mould and other
deposits.

■

Clean the unit using a damp
cloth. Do not use any caustic,
abrasive or solvent-based
cleaning products. Do not use
a jet of water.

■

Clean the fins on the unit prior
to long shutdown periods.

Maintenance

Air filter for indoor unit

Clean the air filter at intervals
of no more than 2 weeks.
Reduce this interval if the air
is especially dirty.

Filter removal

Cleaning the filter

1. Disconnect the power supply
to the unit.

2. If necessary remove the unit's
cover.

Follow the chapter "Removal
of the unit's cover".

3. Fold the filter downwards and
pull it out towards the front.

4. Clean the filter with
a commercially available
vacuum cleaner. To do this,
turn the dirty side upwards
(Figure 1).

5. Dirt can also be removed
by carefully cleaning with
lukewarm water and mild
cleaning agents. Turn the dirty
side downwards to do this
(Figure 2).

6. If water is used, let the filter
dry out properly in the air
before fitting it back into
the unit.

7. Carefully insert the filter. Ensure
that it locates correctly.

8. Switch the power supply
and the unit back on.

■

We recommend that you take
out a maintenance contract
with an annual service from
an appropriate specialist firm.

Cleaning the housing

1. Disconnect the power supply
to the unit.

2. Clean the grill and cover with
a soft, damp cloth.

3. Switch the power supply
back on.

TIP

A maintenance contract will
guarantee that your system
always operates reliably!

1 Cleaning using a vacuum cleaner

Type of task

Checks / Maintenance / Inspection

General
Medium cycle bleeding
Check medium filling
Contamination of fin register
Filter contamination
Check voltage and current
Check function of fan
Check condensate drainage
Check insulation

2

Cleaning with lukewarm water

Commissioning

Monthly

•

• •

• •

• •

• •

• •

• •

• •

• •

Half-yearly

Yearly

8

Removing the KWK unit
cladding

3

Removing the unit's cover

KWK 130-870

Cleaning the condensate
pump (accessories)

Proceed as follows to clean
the filter of units with an air
inlet plinth or clean the fin heat
exchanger:

1. Disconnect the power supply
to the unit.

2. Open the cover of the control
panel by pressing the key
or removing the screw.

3. Remove the screws under
the cover.

4. Pull the unit's cover upwards
(Figure 3).

5. Clean the filter as described
above and re-assemble the unit
in reverse order.

Removing the KWK-ZW unit
cladding

Screw

Screw

Unit cover

KWK 130ZW-870ZW

Housing frame

Screw

The indoor unit may contain
an integrated or separate
condensate pump which pumps
any accumulated condensate into
outlets at a higher level.

Observe the care and maintenance
instructions in the separate
operating manual.

Cleaning the air-side
components

1. Disconnect the power supply
to the unit.

2. Clean all components such as
ducts and grills using suitable
cleaning agents including anti­bacterial agents if appropriate.

3. Switch the power supply
back on.

The cover can be removed to clean
the fan. To do this, proceed
as follows:

1. Disconnect the power supply
to the unit.

2. Unfasten the screws on the side
of the fan cover (Figure 3).

3. Gently remove the cover from
the unit.

4. Clean the filter / fan as
described above and re­assemble the unit in reverse
order.

Fan cover

Screw

NOTE

In certain types of use
the units and components are
subject to a special hygiene
maintenance and inspection
requirement.

9

REMKO KWK / KWK-ZW

Troubleshooting and customer service

The unit and components are manufactured using state-of-the-art production methods and tested several
times to verify that they function correctly. However, if malfunctions should occur, please check the functions
as detailed in the list below. With systems for cooling or heating with indoor units, chillers or heating systems
the chapter "Troubleshooting and customer service" in all operating manuals must also be observed. Please
inform your dealer if the unit is still not working correctly after all function checks have been performed!

Malfunction

Malfunction Possible cause Checks Remedial measures

The unit does not start or
switches itself off.

Power failure, low voltage,
main fuse defective / main
switch turned off.

Power supply cable damaged.

Power surge due
to thunderstorm.

External condensate pump
alarm.

Controller not activated.

Valve assembly jammed,
not working, not yet fully
activated.

Does all other electrical
equipment function correctly?

Does all other electrical
equipment function correctly?

Have there been lightning
strikes in the area recently?

Has the pump shut down due
to a malfunction?

Has the operating mode /
controller been correctly set?

Is there any electrical power
at the valve head or has
the time period of 3 minutes
after activation passed?

Check the voltage and if necessary
wait for it to come back on.

Repair by specialist firm.

Switch off the mains breaker
and switch it back on. Inspection
by certified service centre.

Check and clean the pump
if necessary.

Check the setting and operation.

Have the valve head replaced
or wait for time period to pass.

The unit is running but
only provides reduced
or no cooling or heating
output.

Condensate discharge
on unit.

Medium outlets on
the unit.

Filter is dirty / air inlet / outlet
opening is blocked by debris.

Windows and doors open.
Heating / cooling output has
increased.

Cooling mode is not set.

Medium temperature in
cooling mode too high.

Medium temperature in
heating mode too low.

Drain pipe of collector
reservoir blocked / damaged.

Insulation missing from
components carrying the
medium.

The condensate drainage line
still contains non-discharged
condensate.

Condensate cannot drain /
external condensate pump
or float defective.

Medium cycle / bleeding
valve leaking.

Have the filters been cleaned? Clean filters.

Have structural / usage
modifications been made?

Is the cooling symbol
in the chiller / heat pump
display activated?

Is the inlet temperature
approx. + 5 ...+ 10 °C and is
the circulation pump working?

Is the inlet temperature
approx. + 25 ...+ 45 °C and is
the circulation pump working?

Can the condensate drain off
without any obstruction?

Do all the medium-carrying
components outside the drip
area have vapour diffusion
barrier insulation?

Is there an incline on
the condensate drainage line
and is it clear?

Are the condensate drainage
lines clear and is there an
incline? Are the condensate
pump and liquid level switch
functioning correctly?

Can any leaks be seen on
components carrying medium?

Close windows and doors / install
additional systems.

Correct the unit's settings.

Reduce the medium temperature.

Increase the medium temperature.

Clean the drainage pipe and
collection container.

Have vapour diffusion barrier
insulation properly installed.

Route the condensate drainage line
with an incline and clean it.

Route the condensate drainage
line with an incline and clean
it. If the liquid level switch
or the condensate pump is
defective, have them replaced
by a specialist company.

Have leaks sealed by a specialist
company.

10

Installation instructions for qualified personnel

Important notes prior
to installation

■

Observe the Operating
Manuals for the indoor unit
and the chiller or heating
system or the heat pump
system when installing
the entire system.

■

The indoor units and
chillers work independently.
A connecting line between
the two is not necessary.

■

Transport the unit in its original
packaging as close as possible
to the installation location.
You avoid transport damage
by doing so.

■

Check the contents of
the packaging for completeness
and check the unit for visible
transport damage.
Report any damage
immediately to your contractual
partner and the shipping
company.

■

Select an installation location
which allows air to flow freely
through the inlet and outlet.
(See section "Minimum
clearances").

■

Do not install the unit
in the immediate vicinity
of devices which generate
intensive thermal radiation.
Installation in the vicinity
of thermal radiation reduces
the unit output.

■

Lift the unit at the corners
and not by the medium
or condensate connections.

■

The medium connection lines,
valves and connections must
have vapour density insulation.
If necessary, also insulate
the condensate drainage line.
In dual systems with
cooling and heating modes,
the requirements of the current
energy savings ordinance
(EnEV) are to be complied with.

■

Seal off open lines to prevent
dirt getting in and never kink
or crimp the lines.

■

Avoid unnecessary bends.
This minimises the pressure loss
in the lines.

■

Make all electrical connections
in accordance with applicable
DIN and VDE standards.

■

Always ensure the electrical
cables are properly connected
to the terminals. Otherwise
there is a risk of fire.

■

Service openings should be
provided in the suspended
ceiling to allow maintenance
access to the control box
or the valve assembly.

■

Any ventilation ducts or pipes
and connection fittings, which
are used to connect a second
room or supply fresh air, should
be insulated with diffusion-tight
material.

■

Only install the valve assembly
or other attachments once
the indoor unit has been
installed.

Installation material

The indoor unit is attached
using 4 bolts to be provided
by the customer.

Selecting the installation location

KWK Wall / ceiling unit

The indoor unit is designed
for vertical wall installation,
for instance underneath windows.
However, it can also be used
in the upper wall area (max.

1.25 m above floor level).

The unit is also designed
for horizontal ceiling installation.
In this case particular attention must
be paid to the condensate drainage
(see the Chapter "Condensate
drainage connection").

KWK-ZW wall / ceiling unit for
installation between partition
walls and ceilings

The indoor unit is designed
for vertical installation in partition
walls.

The unit is also designed for
horizontal installation in ceilings.
In this case particular attention must
be paid to the condensate drainage
(see the Chapter "Condensate
drainage connection").

Connection variants

The following connection variants
can be used for the medium and
condensate pipes and the control
lines.

Connection variants

1

3

1 Outflow through the wall on the left
2 Outflow through the wall on the right
3 Outflow through the floor on the left
4 Outflow through the floor on the right

2

4

11

REMKO KWK / KWK-ZW

Minimum clearances

Observe the minimum clearances
to allow access for maintenance
and repair work in the suspended
ceiling and to facilitate optimum
air distribution for the cover.

Minimum clearances

KWK 130 to 870

1,000

300

300

Min. 100

300

0

1,000

KWK 130ZW-870ZW

300

1000
(from air inlet)

4 Removing the condensate tray

1,000

1,000

(from air outlet)

50

Dimensions in mm

300

1000

300

Changing medium connection parts

The connection side of the heat
exchanger and the condensate
drainage line are installed at
the factory on the left-hand side
of the unit. It is possible to change
this to the right-hand side.

1. Dismantle the condensate tray
by removing the four self­tapping screws.

2. Remove the screws from the heat
exchanger mounting on the side
cover frame (Figure 4).

3. Pull the heat exchanger out
of the unit's mounting.
Be careful as it is easy to be
cut by the fins. Do not bend
any fins and do not damage
the insulation.

4. Cut the insulation of the side
stay plate to accommodate
the brass connections
on the new connection side.

5. Feed the connections through
the newly created holes up
to the stop (Figure 5).

6. Place the tear-resistant plastic
film on the pipe bend side
between the stay plate insulation
and the heat exchanger
mounting. The film protects
the insulation of the stay plate
against damage.

7. Let the heat exchanger slide
into the retainer (keep the same
air duct) and after installing
the heat exchanger remove
the film and screw the unit back
together in reverse order.

5 Removing the heat exchanger

Heat exchanger mounting bolts

Heat exchanger
mounting bolts

Installation variants

KWK Wall / ceiling unit

■ Wall mounting

The unit is secured to the wall
by the unit housing.
The air inlet is, for example,
at floor level or, for example,
via an air inlet plinth etc.
The air outlet is directly from
the housing.

■ Ceiling mounting

The unit is secured under
the ceiling by the unit housing.
The air inlet is, for example,
at floor level or, for example,
via an air inlet plinth etc.
The air outlet is directly from
the housing.

KWK-ZW wall- / ceiling unit for
installation between partition

walls and ceilings

■ Wall mounting

The unit is secured to the wall
by the unit housing.
The air inlet is, for example,
at floor level or, for example,
via a duct elbow etc.
The air outlet is guided by
a short duct system.

■ Ceiling mounting

The unit is secured under
the ceiling or within
the suspended ceiling by
the unit housing. The air intake
is, for example, freely via
a shadow gap on the ceiling
or e.g. via a duct angle, etc.,
the air outlet is guided by
a short duct system.

TIP

For KWK 130ZW-870ZW duct
components are available as
accessories.

Condensate
tray bolt

12

NOTE

Duct parts must be insulated so that they
are impermeable to vapour diffusion!

KWK-ZW inspection openings

Inspection openings must
be provided within the partition
wall and / or suspended ceiling
to ensure maintenance and repair
work on or in the unit.

Inspection opening in the area

■ of the medium connections

with openings of at least
300 cm².

Installation examples

■ of the electrical wiring with

openings of at least 300 cm².

■ of the fan unit with openings

in the unit width and a depth
of at least 300 cm.

■ of the heat exchanger with

openings of the unit width and
a depth of at least 400 cm².

Installing the feet / air inlet
plinth (accessory) only for
the KWK

If the feet or plinth available
as accessories are be used for units
for wall and ceiling mounting
(KWK), these must be installed
before the unit is installed.
Follow the separate Installation
Instructions.

KWK 130-870

Basic unit

KWK 130ZW-870ZW

Trim provided
by the customer

With plinth

With 90° duct elbow,
air inlet

With air inlet plinth

Air inlet via shadow
gap

KWK-ZW air duct

If the duct components available
as accessories are be used in
the units, these must be installed
before the unit is installed.

■

All duct surfaces must be
adequately insulated against
condensation water on site.

■

The effective duct cross-section
must not be reduced.

■

The pressure losses on
the air side must be kept as low
as possible.

Air inlet

■

The unit can be used with
a duct elbow of 90° (accessory).
A grille optically hides
the opening.

Air inlet and outlet
via 90° duct elbow

Installation example
in adjoining room

■

The unit can be used with
a customer-supplied duct
connection piece with
a maximum length of 300 mm.

■

The air is introduced directly
into the unit via a shadow gap.

■

In order to decouple
the vibrations, a flexible
ducting connector, e.g. canvas
connection piece, should be
provided.

■

Inspection openings must be
provided for maintenance and
cleaning of the filter in the unit.

13

REMKO KWK / KWK-ZW

Installation

Air outlet

■

The unit can be used with
a duct elbow of 90° (accessory).
A grille optically hides
the opening.

■

The unit can be used with
a customer-supplied duct
connection piece with
a maximum length of 300 mm.

■

In order to decouple
the vibrations, a flexible duct
piece, e.g. canvas connection
piece, should be provided.

Duct elbow, 90°, air inlet

Unit installation

Wall installation

The unit is attached by means
of mounting holes in the case while
also taking account of the air outlet
side located in the upper part
of the unit.

■

Mark the mounting points
according to the bracket's
dimensions on structurally
acceptable building
components and secure
the unit.

■

Check again that the unit
is level.

■

Connect the medium pipes,
electrical cables and condensate
drainage line to the unit
as described below.

NOTE

Installation should only
be performed by authorised
specialists.

Ceiling installation

The unit is attached by means
of mounting holes in the case while
also taking account of the air outlet
side directed towards the centre
of the room.

■

Mark the mounting points
according to the bracket's
dimensions on structurally
acceptable building
components and secure
the unit.

■

Check again that the unit
is level.

■

Connect the medium pipes,
electrical cables and condensate
drainage line to the unit
as described below.

Duct elbow, 90°, air outlet

NOTE

The air ducting must then be
selected in such a way that no short­circuit can occur on the air side.

NOTE

If the unit is not mounted
positively, vibration can occur.

Unit suspension

A

B

G

F

E

CD

View from the front

All measurements in mm

A B C D E F G

KWK 100-140 659 415 88 156 65 210 70
KWK 200-220 809 545 88 156 65 210 70
KWK 280-300 959 715 88 156 65 210 70
KWK 360-420 1109 865 88 156 65 210 70
KWK 590-680 1409 1165 88 156 65 210 95
KWK 740-870 1709 1465 88 156 65 210 95

14

Selecting the hydraulic
connection

2-conductor system
for cooling and heating

System components
required

2-conductor cooling system

■

Wall installation without valve
assembly:
When the fan is switched
off the flow of air from the air
inlet can be ignored without
sacrificing comfort. In this
application case, use of a valve
assembly is not absolutely
essential.

■

Ceiling installation without
valve assembly:
A valve assembly must be
used in this application case
to prevent the flow of cold
air from the air outlet when
the fan is switched off.

■

Wall installation with valve
assembly:
In order to prevent any
flow of cold air and severe
condensate formation,
for reasons of comfort
a valve assembly can be used
inthis application case.

■

Ceiling installation with valve
assembly:
In order to prevent any flow
of cold air and permanent flow­generated noise, for reasons
of comfort a valve assembly
is recommended in this
application case.

■

As the 2-conductor system
must cool and heat equally,
for reasons of convection
during winter operation,
a valve assembly is stipulated
for all installation methods for
this system operation to avoid
undesirable heat emission.

4-conductor system
for cooling and heating

■

As the 4-conductor system
must cool and heat equally, two
valve assemblies are stipulated
for this system operation for
the cooling and heating register.

Connection of the medium
piping

■

The connection of the piping
by the customer is made
on the rear side of the units.

■

For the purpose of servicing,
connections must be equipped
with shut-off valves and
the medium flow rate adjusted
using hydronic balancing
valves.

■

Additional automatic bleed
valves must be provided
in the supply and return flows
at the installation's highest
point.

■

The medium piping must
not exert any structural load
on the unit.

■

The pipe connections must
not impose any thermal
or mechanical stresses
on the unit.
If necessary, cool the piping
or support with the second tool.

Valve assembly for 2 or
4-conductor systems (accessory)

In 2 or 4-conductor systems, cold
or warm medium is fed through
the heat exchangers into the unit
and cold or warm air can be
discharged. Control is provided
by the 3-way valve assembly.
It consists of the electrically
actuated valve head and the valve
body. If the head is electrically
activated, it actuates the body,
which routes the medium into
the register. If the temperature
is reached, the head is switched
off and the medium is fed past
the heat exchanger through
the bypass . The bypass serves
to ensure the minimum medium
flow rate for the chiller.

NOTE

The time between being fully
open and fully closed can
be approx. three minutes.

Valves for hydronic balancing

The calculated individual pressure
losses in the pipeline network
layout for each individual unit
are adjusted to the entire system
with hydronic balancing valves
to be provided by the customer.
The nominal flow rates for
the medium adjust to the values
needed as a consequence
of the pressure loss.

15

REMKO KWK / KWK-ZW

Condensate drainage
connection

Anti-freeze protection (accessories)

A water glycol mix is generally
used as the medium for a cold
water system. Depending on
the glycol type and quantity used,
the viscosity changes, the pressure
loss increases and the unit's
cooling or heating output reduces.

All system components must
be approved for use with glycol.

NOTE

The product and safety data
sheets of the glycol type which
is used must be obeyed during
use and disposal .

Diaphragm expansion vessel
(MAG)

To avoid pressure fluctuations
because of temperature changes
when not operating, diaphragm
expansion vessels filled with
nitrogen (moisture neutral) must
be integrated in the system.

Automatic bleed valves

The unit has one or two manual
bleed valves on the collector pipe
of the register.
The unit can be bled separately
after the system has been filled.
Automatic bleed valves must also
be installed at the highest point
in the collector line.

CAUTION

Glycol tolerant bleeding valves
are necessary when using
media which contain glycol.

Safety valve

Safety valves limit excess operating
pressure due to excess warming
or overfilling of the operating
medium. The valve outlet requires
unobstructed draining into a drain
line. Applicable local disposal
ordinances must be observed
if glycol is used.

NOTE

No moisture can condense
in the nitrogen filler.

If the temperature falls below
the dew point, condensate will
form on the cooling fins during
cooling mode.

Below the heat exchanger is
a collection tray which must be
connected to a drain.

■

The condensate drainage
line provided by the customer
should be installed with
an incline of at least 2 %.
If necessary, fit vapour­diffusion-proof insulation.

■

Route the condensate drainage
line of the unit into the drain
line without any obstruction.
If the condensate runs directly
into a sewer pipe, fit a trap to
prevent any unpleasant odours.

■

When operating the unit at
outside temperatures below
0°C, ensure the condensate
drainage line is laid in such
a manner to protect it against
frost.
If necessary, fit a pipe heater.

■

Following installation, check
that the condensate run off
is unobstructed and ensure that
the line is durably leak tight.

Bleeding valve

Outlet

16

Inlet

Manual
bleeding valve

Inlet

Outlet

Manual
bleeding valve

Vertical mounting

The condensate drainage line
can be connected at the funnel
nozzle. The position of the nozzle
can be selected to be on the left
or right. The condensate drainage
connection of the condensate
tray which is not used must
be permanently sealed.
If a valve assembly is used,
the connection must be made
to the additional condensate tray.

Electrical wiring

Horizontal mounting

The condensate drainage line
can be connected directly
to the condensate tray. If a valve
assembly is used, the condensate

CAUTION

The condensate drainage connection
of the condensate tray which is not
used must be permanently sealed
(a cap or similar).

is conveyed to the unit's pan and
is drained from there.

Condensate drainage connection

Vertical mounting Horizontal mounting

Condensate drainage connection Condensate drainage connection

CAUTION

All electrical installation work
is to be performed by specialist
companies. Disconnect the power
supply when connecting
the electrical terminals.

■

We recommend installing
a master / repair switch
provided by the customer close
to the indoor unit.

■

The power supply is made
at the indoor unit, a control line
to the chiller is not necessary.

■

If a condensate pump, which
is available as an accessory,
is used in conjunction with
the unit, the pump switch-off
contact switches off the power
supply or the valve if necessary.

■

The terminal block for making
the connections and the plug
are located behind the unit's
cover on the right side
of the unit.

KWK Horizontal mounting

Possible accessories

Room temperature controller

■

The room temperature
controller operates the unit.
The controller can be wall­mounted or installed in the unit,
as required.

Follow the separate

Installation Instructions.

Switch relay for 4 units, if appropriate

■ If several units are to be controlled

together in a group, a switch relay
is necessary if a room temperature
controller is used.
Follow the separate Installation
Instructions.

Heating element if necessary

■ The heating element allows

the rooms to be heated
electrically via the controller.
Follow the separate Installation
Instructions.

17

REMKO KWK / KWK-ZW

Condensate pump

■ If the condensate which

forms is to be removed
by a condensate pump, this can
be placed in the unit.
Follow the separate Installation
Instructions.

CAUTION

Check all plug and terminal
connections to verify
that they are tight and make
a permanent contact. Tighten
as required.

Electrical drawings

KWK 130 (ZW) to 870 (ZW)

Power supply, 230 V/,1~, 50 Hz

Make the connection as follows:

1. Open the unit's cover.

2. Insert the cables into the unit.

3. Connect the unit with
a controller and the power
supply.
See electrical drawings.

4. Install all removed parts.

Electrical wiring

Connection terminals

Phase conductor

Neutral conductor

Earth conductor

Leak testing

The leak test is carried out after
the connection has been made.

1. Flush the system twice with tap
water.

2. Clean the sieve insert on
the dirt trap.

3. Fill the system with water
again and bleed the unit
at the manual bleed valves.

Level 3

Level 2

Level 1

4. Adjust the test pressure to at
least 200 kPa (2.0 bar).

5. Check the connections for
leaking water after a period
of at least 24 hours . If leaks are
visible, the connection has not
been properly made.
Tighten the connection
or establish a new connection.

Black

Blue

Red

White

Green / yellow

M

6. After a successful leak test,
remove the excess pressure
from the medium piping
if a water-glycol mixture is used
or adjust the non-circulating
pressure to the required system
pressure.

18

Before
commissioning

Anti-freeze protection for
the medium

If a water-glycol mixture is used,
it is to be pre-mixed before being
put in the system. The desired
concentration is then to be
checked.

Bleeding the system

■

Air may still be in the pipe
lines after the leak test.
This is carried during operation
of the circulation pump to
the automatic bleeding valves
or to the cold water drain.
It is necessary to bleed again
here.

■

The non-circulating pressure
must then be adjusted to
the required system pressure.

MAG

Commissioning

■

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

■

Observe the manuals
for the unit and all other
components when
commissioning the entire
system.

Function test for cooling operating
mode

1. Switch the power supply on
and if necessary open all shut­off valves.

2. Switch on the chiller and
the corresponding circulation
pump. The outlet temperature
must be between +4 and
+18°C.

Function test of heating operating
mode

1. Switch the power supply on
and if necessary open all shut­off valves.

2. Switch on the heating system
and the corresponding
circulation pump. The outlet
temperature must be between
+35 and +70°C.

3. Use the controller to switch on
the unit and select the heating
mode, maximum fan speed and
highest target temperature.

4. Measure and record all
the required values in
the commissioning report and
check the safety functions.

5. Check the unit control system
using the functions described
in the Chapter "Operation".

■ The preliminary pressure for

the diaphragm expansion vessel
must be adjusted individually
to the system layout,
the volume of the medium and
the installation site.

Valves for hydronic balancing

■

The calculated excess pressure
in the pipe network layout at
the individual cold water outlets
must be adjusted on the pipe
leg regulating valves.

Safety valve

■

The safety valves and
their correct function must
be checked.

■

The drain line for the valves
is to be checked for function
and leak tightness.

3. Use the controller to switch on
the unit and select the cooling
mode, maximum fan speed and
lowest target temperature.

4. Measure and record all
the required values in
the commissioning report and
check the safety functions.

5. Check the unit control system
using the functions described
in the Chapter "Operation".

6. Check that the condensate
drainage line is functioning
correctly by pouring distilled
water into the condensate tray.

Final tasks

■

Reassemble all disassembled
parts.

■

Familiarise the operator with
the system.

NOTE

During manual bleeding, any
glycol mixtures which escape
must be disposed of separately.
Do not feed them into
the condensate tray!

19

REMKO KWK / KWK-ZW

Unit dimensions

KWK 130 to 870

D

E

Cooling inlet

2-conductor-system

A

B

C

O

N

M

L

J

K

Heating inlet

4-conductor-system (accessory)

Heating outlet

4-conductor-system (accessory)

I

H

G

F

KWK 130
KWK 140
KWK 200
KWK 220
KWK 280
KWK 300
KWK 360

KWK 420

KWK 590

KWK 680

KWK 740
KWK 870

Electrical
wiring

S

R

Q

P

A B C D E F G H I J K L M N O P Q R S

659 478 219 65 85 251 322 383 395 110 185 42 112 141 155 415 65 275 345

659 478 219 65 85 251 322 383 395 110 185 42 112 141 155 415 65 275 345

809 478 219 65 85 251 322 383 395 110 185 42 112 141 155 565 65 275 345

809 478 219 65 85 251 322 383 395 110 185 42 112 141 155 565 65 275 345

959 478 219 65 85 251 322 383 395 110 185 42 112 141 155 715 65 275 345

959 478 219 65 85 251 322 383 395 110 185 42 112 141 155 715 65 275 345

1109 478 219 65 85 251 322 383 395 110 185 42 112 141 155 865 65 275 345

1109 478 219 65 85 251 322 383 395 110 185 42 112 141 155 865 65 275 345

1409 525 230 65 85 251 319 428 445 114 195 42 112 155 174 1165 65 290 385

1409 525 230 65 85 251 319 428 445 114 195 42 112 155 174 1165 65 290 385

1709 525 230 65 85 251 319 428 445 114 195 42 112 155 174 1465 65 290 385

1709 525 230 65 85 251 319 428 445 114 195 42 112 155 174 1465 65 290 385

All measurements in mm

20

Unit dimensions

KWK 130ZW to 870ZW

D

E

Air inlet Air outlet

W

Cooling inlet

2-conductor-system

O

A

N

M

L

B

Heating inlet

4-conductor-system (accessory)

Heating outlet

4-conductor-system (accessory)

I

H

G

F

J

K

U

C

U

V

KWK 130
KWK 140
KWK 200
KWK 220
KWK 280
KWK 300
KWK 360

KWK 420

KWK 590

KWK 680

KWK 740
KWK 870

Electrical
wiring

S

R

Q

P

A B C D E F G H I J K L M N O P Q R S U V W

415 446 216 65 85 251 322 383 395 110 185 42 112 141 155 415 65 275 345 390 100 206

415 446 216 65 85 251 322 383 395 110 185 42 112 141 155 415 65 275 345 390 100 206

545 446 216 65 85 251 322 383 395 110 185 42 112 141 155 565 65 275 345 540 100 206

545 446 216 65 85 251 322 383 395 110 185 42 112 141 155 565 65 275 345 540 100 206

715 446 216 65 85 251 322 383 395 110 185 42 112 141 155 715 65 275 345 690 100 206

715 446 216 65 85 251 322 383 395 110 185 42 112 141 155 715 65 275 345 690 100 206

865 446 216 65 85 251 322 383 395 110 185 42 112 141 155 865 65 275 345 840 100 206

865 446 216 65 85 251 322 383 395 110 185 42 112 141 155 865 65 275 345 840 100 206

1165 493 227 65 85 251 319 428 445 114 195 42 112 155 174 1165 65 290 385 1140 120 217

1165 493 227 65 85 251 319 428 445 114 195 42 112 155 174 1165 65 290 385 1140 120 217

1465 493 227 65 85 251 319 428 445 114 195 42 112 155 174 1465 65 290 385 1440 120 217

1465 493 227 65 85 251 319 428 445 114 195 42 112 155 174 1465 65 290 385 1440 120 217

All measurements in mm

21

REMKO KWK / KWK-ZW

Exploded view KWK 130 to 870

2

9

12

10

11

6

8

4

3

5

7

1

We reserve the right to modify the dimensions and design

as part of the ongoing technical development process.

Spare parts list

No. Designation

1 Unit cover 1111750 1111750 1111751 1111751 1111752 1111752
2 Fin exchanger 1111758 1111758 1111759 1111759 1111760 1111760
3 Outlet grill 1111764 1111764 1111764 1111764 1111764 1111764
4 Control panel, right 1111765 1111765 1111765 1111765 1111765 1111765
5 Control panel, left 1111766 1111766 1111766 1111766 1111766 1111766
6 Fan unit, complete 1112394 1112394 1112395 1112395 1112396 1112396
7 Air filter 1111773 1111773 1111774 1111774 1111775 1111775
8 Condensate tray 1111779 1111779 1111780 1111780 1111781 1111781

9 Condensate tray, valve assembly, vertical 1111785 1111785 1111785 1111785 1111785 1111785
10 Transformer, speed step 1112400 1112400 1112400 1112400 1112400 1112400
11 Condenser fan 1112402 1112402 1112403 1112403 1112404 1112404
12 Condensate connection 1111790 1111790 1111790 1111790 1111790 1111790

No. Designation

1 Unit cover 1111753 1111753 1111755 1111755 1111757 1111757

2 Fin exchanger 1111761 1111761 1111762 1111762 1111763 1111763

3 Outlet grill 1111764 1111764 1111764 1111764 1111764 1111764

4 Control panel, right 1111765 1111765 1111765 1111765 1111765 1111765

5 Control panel, left 1111766 1111766 1111766 1111766 1111766 1111766

6 Fan unit, complete 1112397 1112397 1112398 1112398 1112399 1112399

7 Air filter 1111776 1111776 1111777 1111777 1111778 1111778

8 Condensate tray 1111782 1111782 1111783 1111783 1111784 1111784

9 Condensate tray, valve assembly, vertical 1111785 1111785 1111785 1111785 1111785 1111785
10 Transformer, speed step 1112400 1112400 1112401 1112401 1112401 1112401
11 Condenser fan 1112403 1112403 1112405 1112405 1112404 1112404
12 Condensate connection 1111790 1111790 1111790 1111790 1111790 1111790

When ordering spare parts, please state the EDP and unit number (see name plate)!

KWK 130 KWK 140 KWK 200 KWK 220 KWK 280 KWK 300

KWK 360 KWK 420 KWK 590 KWK 680 KWK 740 KWK 870

22

Exploded view KWK 130ZW to 870ZW

5

3

Spare parts list

No. Designation

1 Fin exchanger 1111758 1111758 1111759 1111759 1111760 1111760
2 Fan unit, complete 1112394 1112394 1112395 1112395 1112396 1112396
3 Air filter 1111773 1111773 1111774 1111774 1111775 1111775
4 Condensate tray 1111779 1111779 1111780 1111780 1111781 1111781
5 Condensate tray, valve assembly, horizontal 1111791 1111791 1111791 1111791 1111791 1111791
6 Transformer, speed step 1112400 1112400 1112400 1112400 1112400 1112400
7 Condenser fan 1112402 1112402 1112403 1112403 1112404 1112404
8 Condensate connection 1111790 1111790 1111790 1111790 1111790 1111790

8

2

7

6

4

We reserve the right to modify the dimensions and design

as part of the ongoing technical development process.

KWK 130 ZWKWK 140 ZWKWK 200 ZWKWK 220 ZWKWK 280 ZWKWK 300

1

ZW

No. Designation

1 Fin exchanger 1111761 1111761 1111762 1111762 1111763 1111763
2 Fan unit, complete 1112397 1112397 1112398 1112398 1112399 1112399
3 Air filter 1117736 1111776 1111777 1111777 1111778 1111778
4 Condensate tray 1111782 1111782 1111783 1111783 1111784 1111784
5 Condensate tray, valve assembly, horizontal 1111791 1111791 1111791 1111791 1111791 1111791
6 Transformer, speed step 1112400 1112400 1112401 1112401 1112401 1112401
7 Condenser fan 1112403 1112403 1112405 1112405 1112404 1112404
8 Condensate connection 1111790 1111790 1111790 1111790 1111790 1111790

When ordering spare parts, please state the EDP and unit number (see name plate)!

KWK 360 ZWKWK 420 ZWKWK 590 ZWKWK 680 ZWKWK 740 ZWKWK 870

ZW

23

REMKO KWK / KWK-ZW

Technical data

Series KWK 130 KWK 140 KWK 200 KWK 220 KWK 280 KWK 300

Operating mode

2.2 rated cooling output

1)

Rated cooling output, sensitive

Rated heating output

2)

kW 1.31 1.48 1.96 2.2 2.77 3.11

1)

kW 1.11 1.28 1.56 1.81 2.25 2.57

kW 1.61 1.86 2.22 2.58 3.23 3.69

Chilled water units for wall and ceiling mounting, 2-conductor version

Application area (room volume), approx. m³ 40 50 60 70 90 100

Operating range - indoor unit °C +15 to +35

Air flow volume per stage m³/h

Sound pressure level per stage

3)

dB(A)

Sound power level per stage dB(A)

120/199/263 147/228/314 173/264/349 199/313/416

262/392/518 294/451/610

22/31/38 24/34/42 23/32/39 25/36/43 28/35/42 28/38/45

30/39/46 32/42/50 31/40/47 33/44/51 34/43/50 36/46/53

Power supply V/Hz 230/1~/50

Enclosure class IP X0

Electr. rated power consumption

Electr. rated current consumption

1)

1)

kW 35 44 39 49 51 65

A 0.15 0.19 0.17 0.22 0.24 0.31

Operating medium Water; max. 35% ethylene glycol, max. 35% propylene glycol

Operating limits, medium - cooling °C +4 to +18

Operating limits, medium - heating °C +35 to +80

Max. operating pressure, medium kPa 600

Nominal flow rate, medium - cooling 1)m³/h 0.23 0.26 0.34 0.38 0.47 0.53

Nominal flow rate, medium - heating 2)m³/h 0.28 0.32 0.39 0.45 0.55 0.63

Rated pressure drop, internal - cooling 1)kPa 4.3 5.3 11.3 14.2 7.8 9.5

Rated pressure drop, internal - heating 2)kPa 5.3 6.8 11.8 15.3 8.9 11.2

Medium connection, inlet Inches 1/2 female

Medium connection, outlet Inches 1/2 female

Medium volume l 0.6 0.6 0.9 0.9 1.1 1.1

Condensate drainage connection mm 19

Dimensions - Height mm 478 478 478 478 478 478

Width mm 659 659 809 809 959 959

Depth mm 219 219 219 219 219 219

Weight kg 14 14 17 17 20 20

Operating weight, approx. kg 14.6 14.6 17.9 17.9 21.1 21.1

Standard colour Similar to RAL 9016

Serial number 1698... 1699... 1700... 1701... 1702... 1703...

EDP 1662210 1662220 1662230 1662240 1662250 1662260

1) Air inlet temperature TK 27 °C / FK 19 °C, medium inlet 7 °C, medium outlet 12 °C, 0% glycol concentration, max. air flow volume

2) Air inlet temperature TK 20 °C, medium inlet 45 °C, medium outlet 40 °C, 0% glycol concentration, max. air flow volume

3) Distance of 1.0 m in a 100 m3 space with a reverberation time of 0.3 s

24

Technical data

Series KWK 360 KWK 420 KWK 590 KWK 680 KWK 740 KWK 870

Operating mode

2.2 rated cooling output

1)

Rated cooling output, sensitive

Rated heating output

2)

kW 3.61 4.19 5.93 6.8 7.4 8.66

1)

kW 2.8 3.31 4.61 5.36 5.65 6.72

kW 3.95 4.69 6.46 7.54 7.9 9.45

Chilled water units for wall and ceiling mounting, 2-conductor version

Application area (room volume), approx. m³ 120 150 190 220 240 280

Operating range - indoor unit °C +15 to +35

Air flow volume per stage m³/h

Sound pressure level per stage

3)

dB(A)

Sound power level per stage dB(A)

282/462/611 328/524/751 468/724/1001 538/843/1203

524/873/1195 612/1037/1489

22/32/39 24/36/44 29/40/47 32/43/51 29/38/45 31/41/49

30/40/47 32/44/52 37/48/55 40/51/59 37/46/53 39/49/57

Power supply V/Hz 230/1~/50

Enclosure class IP X0

Electr. rated power consumption

Electr. rated current consumption

1)

1)

kW 72 92 121 145 145 179

A 0.29 0.38 0.56 0.69 0.69 0.78

Operating medium Water; max. 35% ethylene glycol, max. 35% propylene glycol

Operating limits, medium - cooling °C +4 to +18

Operating limits, medium - heating °C +35 to +80

Max. operating pressure, medium kPa 600

Nominal flow rate, medium - cooling 1)m³/h 0.62 0.72 1.02 1.17 1.27 1.49

Nominal flow rate, medium - heating 2)m³/h 0.68 0.81 1.11 1.3 1.36 1.62

Rated pressure drop, internal - cooling 1)kPa 14 22 16 18 10 15.5

Rated pressure drop, internal - heating 2)kPa 14.8 20.1 25.5 33.5 14.6 19.9

Medium connection, inlet Inches 1/2 female

Medium connection, outlet Inches 1/2 female

Medium volume l 1.4 1.4 2.4 2.4 3 3

Condensate drainage connection mm 19

Dimensions - Height mm 478 478 525 525 525 525

Width mm 1109 1109 1409 409 1709 1709

Depth mm 219 219 230 230 230 230

Weight kg 23 23 35 35 47 47

Operating weight, approx. kg 24.4 24.4 37.4 37.4 50 50

Standard colour Similar to RAL 9016

Serial number 1704... 1705... 1706... 1707... 1708... 1709...

EDP 1662270 1662280 1662290 1662300 1662310 1662320

1) Air inlet temperature TK 27 °C / FK 19 °C, medium inlet 7 °C, medium outlet 12 °C, 0% glycol concentration, max. air flow volume

2) Air inlet temperature TK 20 °C, medium inlet 45 °C, medium outlet 40 °C, 0% glycol concentration, max. air flow volume

3) Distance of 1.0 m in a 100 m3 space with a reverberation time of 0.3 s

25

REMKO KWK / KWK-ZW

Technical data

Series

Operating mode

Rated cooling output

1)

Rated cooling output, sensitive

Rated heating output

2)

KWK

130ZW

Chilled water units for partition wall and suspended ceiling installation, 2-conductor version

kW 1.31 1.48 1.96 2.2 2.77 3.11

1)

kW 1.11 1.28 1.56 1.81 2.25 2.57

kW 1.61 1.86 2.22 2.58 3.23 3.69

KWK

140ZW

KWK

200ZW

KWK

220ZW

KWK

280ZW

KWK

300ZW

Application area (room volume), approx. m³ 40 50 60 70 90 100

Operating range - indoor unit °C +15 to +35

Air flow volume per stage m³/h

Sound pressure level per stage

3)

dB(A)

Sound power level per stage dB(A)

120/199/263 147/228/314 173/264/349 199/313/416

262/392/518 294/451/610

22/31/38 24/34/42 23/32/39 25/36/43 28/35/42 28/38/45

30/40/47 32/44/52 37/48/55 40/51/59 37/46/53 39/49/57

Static pressure, max. Pa 30 30 20 30 20 40

Power supply V/Hz 230/1~/50

Enclosure class IP X0

Electr. rated power consumption

Electr. rated current consumption

1)

1)

kW 35 44 39 49 51 65

A 0.15 0.19 0.17 0.22 0.24 0.31

Operating medium Water; max. 35% ethylene glycol, max. 35% propylene glycol

Operating limits, medium - cooling °C +4 to +18

Operating limits, medium - heating °C +35 to +80

Max. operating pressure, medium kPa 600

Nominal flow rate, medium - cooling 1)m³/h 0.23 0.26 0.34 0.38 0.47 0.53

Nominal flow rate, medium - heating 2)m³/h 0.28 0.32 0.39 0.45 0.55 0.63

Rated pressure drop, internal - cooling 1)kPa 4.3 5.3 11.3 14.2 7.8 9.5

Rated pressure drop, internal - heating 2)kPa 5.3 6.8 11.8 15.3 8.9 11.2

Medium connection, inlet Inches 1/2 female

Medium connection, outlet Inches 1/2 female

Medium volume l 0.6 0.6 0.9 0.9 1.1 1.1

Condensate drainage connection mm 19

Dimensions - Height mm 216 216 216 216 216 216

Width mm 460 460 610 610 760 760

Depth mm 446 446 446 446 446 446

Weight kg 9 9 11 11 13 13

Operating weight, approx. kg 9.6 9.6 11.9 11.9 14.1 14.1

Serial number 1710... 1711... 1712... 1713... 1714... 1715...

EDP 1662215 1662225 1662235 1662245 1662255 1662265

1) Air inlet temperature TK 27 °C / FK 19 °C, medium inlet 7 °C, medium outlet 12 °C, 0% glycol concentration, max. air flow volume

2) Air inlet temperature TK 20 °C, medium inlet 45 °C, medium outlet 40 °C, 0% glycol concentration, max. air flow volume

3) Distance of 1.0 m in a 100 m3 space with a reverberation time of 0.3 s

26

Technical data

Series

Operating mode

Rated cooling output

1)

Rated cooling output, sensitive

Rated heating output

2)

KWK

360ZW

Chilled water units for partition wall and suspended ceiling installation, 2-conductor version

kW 3.61 4.19 5.93 6.8 7.4 8.66

1)

kW 2.8 3.31 4.61 5.36 5.65 6.72

kW 3.95 4.69 6.46 7.54 7.9 9.45

KWK

420ZW

KWK

590ZW

KWK

680ZW

KWK

740ZW

KWK

870ZW

Application area (room volume), approx. m³ 120 150 190 220 240 280

Operating range - indoor unit °C +15 to +35

Air flow volume per stage m³/h

Sound pressure level per stage

3)

dB(A)

Sound power level per stage dB(A)

282/462/611 328/524/751 468/724/1001 538/843/1203

524/873/1195 612/1037/1489

22/32/39 24/36/44 29/40/47 32/43/51 29/38/45 31/41/49

30/40/47 32/44/52 37/48/55 40/51/59 37/46/53 39/49/57

Static pressure, max. Pa 30 40 70 70 50 60

Power supply V/Hz 230/1~/50

Enclosure class IP X0

Electr. rated power consumption

Electr. rated current consumption

1)

1)

kW 72 92 121 145 145 179

A 0.29 0.38 0.56 0.69 0.69 0.78

Operating medium Water; max. 35% ethylene glycol, max. 35% propylene glycol

Operating limits, medium - cooling °C +4 to +18

Operating limits, medium - heating °C +35 to +80

Max. operating pressure, medium kPa 600

Nominal flow rate, medium - cooling 1)m³/h 0.62 0.72 1.02 1.17 1.27 1.49

Nominal flow rate, medium - heating 2)m³/h 0.68 0.81 1.11 1.3 1.36 1.62

Rated pressure drop, internal - cooling 1)kPa 14 22 16 18 10 15.5

Rated pressure drop, internal - heating

2)

kPa 14.8 20.1 25.5 33.5 14.6 19.9

Medium connection, inlet Inches 1/2 female

Medium connection, outlet Inches 1/2 female

Medium volume l 1.4 1.4 2.4 2.4 3 3

Condensate drainage connection mm 19

Dimensions - Height mm 216 216 226 226 226 226

Width mm 910 910 1210 1210 1510 1510

Depth mm 446 446 493 493 493 493

Weight kg 15 15 25 25 35 35

Operating weight, approx. kg 16.4 16.4 27.4 27.4 38 38

Serial number 1716... 1717... 1718... 1719... 1720... 1721...

EDP 1662275 1662285 1662295 1662305 1662315 1662325

1) Air inlet temperature TK 27 °C / FK 19 °C, medium inlet 7 ℃, medium outlet 12 °C, 0% glycol concentration, max. air flow volume

2) Air inlet temperature TK 20 °C, medium inlet 45 °C, medium outlet 40 °C, 0% glycol concentration, max. air flow volume

3) Distance of 1.0 m in a 100 m3 space with a reverberation time of 0.3 s

27

REMKO KWK / KWK-ZW

Services

Cooling capacity

Air inlet

5 °C 7 °C 9 °C 11 °C 13 °C 15 °C

TK 27°C,

Q

K

Q

FK19°C

KWK
130

KWK
140

KWK
200

KWK
220

KWK
280

KWK
300

KWK
360

KWK
420

KWK
590

KWK
680

KWK
740

KWK
870

Air inlet temperature TK 27°C / FK 19°C, 0% Glycol concentration, Spread ∆t = 5K
QK = Cooling capacity, overall
QS = Cooling capacity, sensitive
V = Medium flow rate

Fan stage

[kW]

max 1.64 1.24 282 1.31 1.11 226 1.05 1 180 0.86 0.86 147 0.71 0.71 122 0.57 0.57 97
med 1.34 0.99 230 1.08 0.88 185 0.85 0.8 146 0.68 0.68 118 0.57 0.57 98 0.45 0.45 78
min 0.9 0.64 155 0.73 0.57 126 0.57 50 98 0.45 0.45 77 0.37 0.37 64 0.3 0.3 51
max 1.85 1.43 319 1.48 1.28 255 1.2 1.15 205 0.99 0.99 169 0.82 0.82 140 0.65 0.65 111
med 1.84 1.1 254 1.19 0.99 204 0.94 0.89 162 0.77 0.77 131 0.64 0.64 109 0.51 0.51 87
min 1.06 0.77 182 0.86 0.68 147 0.66 0.6 114 0.53 0.53 91 0.44 0.44 76 0.35 0.35 61
max 2.41 1.75 414 1.96 1.56 337 1.52 1.38 260 1.22 1.22 210 1.02 1.02 176 0.82 0.82 141
med 1.94 1.39 334 1.59 1.24 273 1.25 1.09 213 0.97 0.97 166 0.81 0.81 139 0.65 0.65 112
min 1.38 0.96 236 1.13 0.86 194 0.87 0.75 150 0.69 0.67 118 0.57 0.57 97 0.46 0.46 79
max 2.74 2.02 471 2.23 1.81 383 1.75 1.64 300 1.41 1.41 242 1.18 1.18 203 0.95 0.95 163
med 2.22 1.6 381 1.81 1.43 311 1.42 1.26 242 1.12 1.12 192 0.94 0.94 161 0.75 0.75 129
min 1.55 1.09 266 1.27 0.97 218 0.97 0.85 167 0.76 0.76 130 0.64 0.64 109 0.51 0.51 88
max 3.42 2.52 588 2.77 2.25 476 2.18 2.05 373 1.76 1.76 302 1.47 1.47 252 1.18 1.18 202
med 2.77 2.01 477 2.26 1.79 388 1.75 1.57 298 1.4 1.4 240 1.17 1.17 201 0.94 0.94 161
min 2.01 1.42 3.46
max 3.84 2.87 660
med 3.09 2.25 530 2.51 2.01 431 1.96 1.77 335 1.57 1.57 270 1.31 1.31 225 1.05 1.05 181
min 2.21 1.57 380 1.81 1.4 311 1.4 1.23 240 1.1 1.1 188 0.92 0.92 158 0.74 0.74 127
max 4.38 3.13 752 3.61 2.8 620 2.82 2.47 485 2.25 2.2 385 1.85 1.85 318 1.5 1.5 257
med 3.52 2.48 605 2.91 2.21 500 2.28 1.95 392 1.78 1.74 304 1.46 1.46 251 1.18 1.18 203
min 2.33 1.61 401
max 5.1 3.7 877
med 3.89 2.76 668 3.21 2.46 551 2.52 2.17 432 1.98 1.93 340 1.63 1.63 279 1.32 1.32 226
min 2.65 1.84 456 2.2 1.64 378 1.72 1.44 295 1.35 1.29 232 1.08 1.08 186 0.88 0.88 151
max 7.21 5.16 1239 5.96 4.61 1022 4.6 4.06 788 3.68 3.62 632 3.04 3.04 522 2.46 2.46 422
med 5.58 3.93 959 4.61 3.5 791 3.6 3.08 617 2.8 2.72 480 2.31 2.31 396 1.87 1.87 321
min 3.87 2.68 665
max 8.28 5.99 1422
med 6.3 4.47 1084 5.19 3.99 893 4.01 2.51 689 3.13 3.13 537 2.63 2.63 452 2.13 2.13 365
min 4.36 3.03 749 3.61 2.7 620 2.81 2.37 483 2.16 2.11 371 1.78 1.78 306 1.44 1.44 248
max 8.94 6.32 1537 7.4 5.65 1271 5.78 4.98 990 4.48 4.4 768 3.73 3.73 642 3.03 3.03 520
med 6.94 4.83 1192 5.76 4.32 989 4.49 3.8 771 3.48 3.32 596 2.85 2.85 490 2.31 2.31 398
min 4.47 3.07 769
max 10.5 751 1805
med 7.99 5.6 1373 6.62 5.01 1137 5.24 4.41 986 4.08 3.86 700 3.31 3.31 568 2.69 2.69 461
min 5.13 3.53 881 4.27 3.15 734 3.35 2.77 575 2.62 2.42 450 2.09 2.09 358 1.7 1.7 292

S

[kW]V [l/h]

Q

K

Q

[kW]

[kW]V [l/h]

1.65 1.27

3.11 2.57

1.94 1.44

4.19 3.31

3.21 2.38

6.79 5.36

3.73 2.74

8.66 6.72

S

Q

K

[kW]

283 1.29 1.11 222 1 0.99 1.72 0.83 0.83 143 0.67 0.67 115
534 2.44 2.31 417 2 2 344 1.67 1.67 287 1.34 1.34 230

333 1.51 1.26 260 1.18 1.13 204 0.95 0.95 163 0.77 0.77 133
720 3.24 3.02 554 2.6 2.6 447 2.19 2.19 376 1.77 1.77 304

552 2.54 2.09 436 1.96 1.87 338 1.58 1.58 271 1.28 1.28 220

1166 5.28 4.73 903 4.21 4.21 723 3.53 3.53 607 2.85 2.85 490

641 2.93 2.4 503 2.28 2.1 390 1.81 1.81 311 1.47 1.47 253

1489 6.78 5.94 1162 5.36 5.28 918 4.5 4.45 768 3.6 3.6 619

Medium inlet

Cooling capacity

Q

S

[kW]V [l/h]

Q

K

[kW]

[kW]V [l/h]

Q

S

Q

K

[kW]

Q

S

[kW]V [l/h]

Q

K

[kW]

Q

S

[kW]V [l/h]

28

Heating output

Air inlet

TK 20°C

KWK
130

KWK
140

KWK
200

KWK
220

KWK
280

KWK
300

KWK
360

KWK
420

KWK
590

KWK
680

KWK
740

KWK
870

Fan stage

max 0.83 143 1.73 1.22 209 3.33 1.61 276 5.31 2 343 7.63 2.09 179 2.41 2.48 213 3.22
med 0.66 114 1.16 0.97 166 2.21 1.27 219 3.52 1.58 271 5.04 1.66 142 1.6 1.97 169 2.13
min 0.43 74 0.54 0.62 107 1.02 0.82 140 1.61 1.01 174 2.3 1.07 92 0.74 1.26 108 0.98
max 0.96 164 2.21 1.41 242 4.27 1.86 319 6.84 2.31 397 9.86 2.41 207 3.1 2.87 246 4.14
med 0.74 127 1.41 1.08 186 2.7 1.43 245 4.31 1.77 304 6.19 1.86 160 1.96 2.2 189 2.61
min 0.51 88 0.74 0.75 128 1.4 0.98 168 2.22 1.21 208 3.17 1.28 110 1.02 1.51 130 1.35
max 1.17 201 4 1.7 292 7.51 2.22 382 11.8 2.75 472 16.9 2.91 250 5.45 3.44 295 7.2
med 0.93 159 2.64 1.34 230 4.94 1.75 300 7.75 2.16 371 11 2.29 197 3.58 2.71 232 4.72
min 0.64 111 1.39 0.92 158 2.56 1.2 206 4 1.48 254 5.67 1.58 136 1.86 1.86 160 2.44
max 1.35 232 5.15 1.96 337 9.7 2.58 442 15.3 3.19 547 21.9 3.36 289 7.04 3.98 341 9.31
med 1.07 184 3.41 1.55 266 6.39 2.03 348 10 2.5 430 14.3 2.65 228 4.63 3.13 269 6.12
min 0.73 125 1.72 1.04 179 3.19 1.36 234 4.99 1.68 288 7.09 1.79 154 2.31 2.11 181 3.04
max 1.69 290 2.96 2.46 422 5.6 3.23 554 8.85 4 686 12.7 4.21 361 4.06 4.99 428 5.38
med 1.34 230 1.97 1.95 334 3.71 2.55 438 5.84 3.15 541 8.34 3.33 286 2.69 3.94 338 3.56
min 1.69 290 2.96 2.46 422 5.6 3.23 554 8.85 4 686 12.7 4.21 361 4.06 4.99 428 5.38
max 1.93 331 3.73 2.81 482 7.08 3.69 634 11.2 4.57 785 16.1 4.81 413 5.13 5.7 489 6.81
med 1.51 259 2.42 2.19 376 4.57 2.87 493 7.21 3.56 610 10.3 3.75 322 3.31 4.44 381 4.39
min 1.05 180 1.28 1.52 260 2.39 1.98 340 3.75 2.45 420 5.34 2.6 223 1.73 3.07 263 2.29
max 2.09 359 5.04 3.02 518 9.42 3.95 677 14.8 4.87 837 21.1 5.17 443 6.84 6.1 524 9.02
med 1.65 283 3.32 2.37 407 6.17 3.1 532 9.66 3.82 656 13.7 4.06 349 4.48 4.79 411 5.89
min 1.07 184 1.55 1.53 263 2.86 1.99 342 4.45 2.45 421 6.3 2.62 225 2.07 3.09 265 2.72
max 2.48 425 6.8 3.59 615 12.8 4.69 806 20.1 5.8 996 28.6 6.14 527 9.25 7.26 623 12.2
med 1.84 315 4.01 2.65 454 7.48 3.46 594 11.7 4.27 733 16.7 4.53 389 5.43 5.35 459 7.15
min 1.22 209 1.96 1.75 301 3.61 2.28 392 5.64 2.81 482 7.99 3 257 2.62 3.53 303 3.44
max 3.45 592 8.81 4.96 851 16.3 6.46 1110 25.5 7.97 1368 36.2 8.49 728 11.8 10 859 15.6
med 2.61 449 5.41 3.75 644 9.98 4.88 838 15.6 6.01 1032 22 6.42 551 7.24 7.56 648 9.5
min 1.78 306 2.76 2.55 437 5.05 3.31 568 7.84 4.07 698 11.1 4.36 374 3.66 5.12 440 4.79
max 4.01 689 11.5 5.78 992 21.4 7.54 1,295 33.5 9.3 1597 47.6 9.89 849 15.5 11.7 1002 20.4
med 2.98 512 6.82 4.28 735 12.6 5.58 957 19.7 6.87 1179 27.9 7.33 629 9.14 8.63 741 12
min 2.01 345 3.41 2.88 494 6.27 3.74 642 9.74 4.6 790 13.8 4.93 423 4.54 5.8 497 5.95
max 4.21 722 5.01 6.06 1040 9.3 7.9 1356 14.6 9.75 1673 20.7 10.4 892 6.75 12.2 1049 8.88
med 3.21 550 3.1 4.6 790 5.73 5.99 1028 8.94 7.38 1267 12.7 7.87 676 4.16 9.27 796 5.46
min 2.03 348 1.39 2.9 498 2.54 3.76 646 3.95 4.63 794 5.57 4.96 426 1.84 5.83 500 2.41
max 5.02 861 6.82 7.23 1242 12.7 9.45 1622 19.9 11.7 2002 28.4 12.4 1063 9.22 14.6 1254 12.2
med 3.73 640 4.04 5.35 919 7.49 6.98 1198 11.7 8.6 1477 16.6 9.17 787 5.43 10.8 927 7.14
min 2.34 402 1.79 3.35 575 3.28 4.35 747 5.09 5.35 919 7.2 5.73 492 2.38 6.74 578 3.11

Medium inlet / medium outlet

35/30 °C 40/35 °C 45/40 °C 50 /45 °C 55/45 °C 60/50 °C

Heating output

Q

H

[kW]V [m³/h]p [kPa]

Q

H

[kW]V [m³/h]p [kPa]

Q

H

[kW]V [m³/h]p [kPa]

Q

H

[kW]V [m³/h]p [kPa]

Q

H

[kW]V [m³/h]p [kPa]

Q

H

[kW]V [m³/h]p [kPa]

Air inlet temperature TK 20°C, 0% Glycol concentration, Spread ∆t = 5K
QK = Heating output, overall
V = Medium flow rate
p = Pressure loss

29

REMKO KWK / KWK-ZW

30

REMKO INTERNATIONAL

... and also right in your neighbourhood!
Take advantage 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]
Fax [phone]
E-mail [e-mail]
Internet www.remko.de

Hotline

Air conditioning
and heating technology

[phone]

Export

[phone]

Consultation

Thanks to intensive training,

our consultants are always

completely up-to-date when

it comes to technical expertise.

This has given us the reputation

of being more than just

an excellent, reliable supplier:

REMKO, a partner who helps

to solve problems.

Sales

REMKO offers not just a well

established sales network both

nationally and internationally, but

also has exceptionally highly-

qualified sales specialists.

REMKO employees in the field

are more than just sales

people: above all, they must

be advisers to our customers

in air conditioning and heating

technology.

Customer service

Our units operate precisely

and reliably. However, in the event

of a malfunction REMKO

customer service is quickly

on the scene. Our comprehensive

network of experienced dealers

guarantees quick and reliable

service.

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