REMKO LTE 120 User manual

Assembly and operating instructions
Read the instructions prior to performing any task!
REMKO LTE 120
Dehumidifier
0178-2018-01 Edition 1, en_GB

Installation and operating instructions (translation of the orig-
inal)
Read these operating instructions carefully before commis-
sioning / 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 mis-
prints!

Table of contents
1 Safety and usage instructions............................................................................................................. 4
1.1 General safety notes....................................................................................................................... 4
1.2 Identification of notes...................................................................................................................... 4
1.3 Personnel qualifications.................................................................................................................. 4
1.4 Dangers of failure to observe the safety notes................................................................................ 4
1.5 Safety-conscious working............................................................................................................... 4
1.6 Safety instructions for the operator................................................................................................. 5
1.7 Safety notes for installation, maintenance and inspection work...................................................... 5
1.8 Unauthorised modification and changes......................................................................................... 6
1.9 Intended use................................................................................................................................... 6
1.10 Warranty........................................................................................................................................ 6
1.11 Transport and packaging............................................................................................................... 6
1.12 Environmental protection and recycling........................................................................................ 6
2 Technical data........................................................................................................................................ 7
2.1 Unit data.......................................................................................................................................... 7
3 Design and function.............................................................................................................................. 9
3.1 Air dehumidification - general note.................................................................................................. 9
3.2 Unit description............................................................................................................................. 12
4 Assembly............................................................................................................................................. 14
4.1 Setting up the unit......................................................................................................................... 14
4.2 Unit transport................................................................................................................................. 14
5 Electrical wiring................................................................................................................................... 15
5.1 General notes................................................................................................................................ 15
5.2 Electrical wiring diagram............................................................................................................... 15
6 Commissioning................................................................................................................................... 16
7Condensate removal........................................................................................................................... 21
8 Troubleshooting and customer service............................................................................................ 23
9 Shutdown............................................................................................................................................. 24
10 Care and maintenance........................................................................................................................ 25
10.1 Care and maintenance................................................................................................................ 25
10.2 Maintenance protocol.................................................................................................................. 27
11 General view of unit and spare parts................................................................................................ 28
11.1 Exploded view of the unit............................................................................................................ 28
11.2 Spare parts list............................................................................................................................ 29
12 Index..................................................................................................................................................... 31
3

1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before com-
missioning 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 Identification of notes
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 sym-
bols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
DANGER!
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.
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!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or mate-
rial and environmental damage.
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 recom-
mendations as well as information for efficient
and fault-free operation.
1.3 Personnel qualifications
Personnel responsible for commissioning, opera-
tion, maintenance, inspection and installation must
be able to demonstrate that they hold a qualifica-
tion which proves their ability to undertake the
work.
1.4 Dangers of failure to observe
the safety notes
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:
nThe failure of important unit functions.
nThe failure of prescribed methods of mainte-
nance and repair.
nDanger to people on account of electrical and
mechanical effects.
1.5 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
REMKO LTE
4

1.6 Safety instructions
for the operator
The operational safety of the units and compo-
nents is only assured providing they are used as
intended and in a fully assembled state.
This unit can be used by children above the age of
8, as well as by people with impaired physical,
sensory or mental capabilities or a lack of experi-
ence and knowledge if they are supervised or have
received instruction in the safe operation of the
unit, and if they understand the associated poten-
tial hazards. Children must never play with the
device. Cleaning and user maintenance must not
be carried out by unsupervised children.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nIf the mains power supply line of this unit is
damaged, this must be replaced by the manu-
facturer or their customer services department
or a similarly qualified person in order to avoid
any hazard.
nDo not operate units or components with
obvious defects or signs of damage.
nThe units may not be installed or operated in
explosive environments.
nThe units must not be installed or operated in
atmospheres containing oil, sulphur, chlorine or
salt.
nThe units must be installed upright and in a
stable position.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
nAll housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects. An unobstructed air inlet and air outlet
must be guaranteed at all times.
nThe units must not be covered during opera-
tion.
nNever stick foreign objects into the units.
nThe units must not be transported while they
are running.
nThe units must only be transported when the
condensate container is empty and the evapo-
rator is dry.
nAll electrical cables on the outside of the units
must be protected against damage (e.g. by ani-
mals etc.).
nBefore each change of location, the conden-
sate container must be emptied.
nThe units must be inspected by a service tech-
nician to ensure that they are safe to use and
fully functional at least once yearly. Visual
inspections and cleaning may be performed by
the operator when the units are disconnected
from the mains.
NOTICE!
Extensions to the connection cable must only
be conducted by authorised specialist electri-
cians, taking into consideration the unit power
consumption, cable length and local use.
NOTICE!
Work on the refrigerant system and on the elec-
trical equipment must only be conducted by a
specially-authorised specialist!
1.7 Safety notes for installation,
maintenance and
inspection work
nAppropriate hazard prevention measures must
be taken to prevent risks to people when per-
forming installation, repair, maintenance or
cleaning work on the units.
nThe 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.
nIf the mains power supply line of this unit is
damaged, this must be replaced by the manu-
facturer or their customer services department
or a similarly qualified person in order to avoid
any hazard.
nThe units must be installed upright and in a
stable position.
nThe units must not be exposed to direct jets of
water, e.g. pressure washers etc.
nSafety devices may not be modified or
bypassed.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nDo not operate units or components with
obvious defects or signs of damage.
nThe units may not be installed or operated in
explosive environments.
nThe units must not be installed or operated in
atmospheres containing oil, sulphur, chlorine or
salt.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
nAll housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects. An unobstructed air inlet and air outlet
must be guaranteed at all times.
5

nAll electrical cables on the outside of the units
must be protected against damage (e.g. by ani-
mals etc.).
nThe units must be inspected by a service tech-
nician to ensure that they are safe to use and
fully functional at least once yearly. Visual
inspections and cleaning may be performed by
the operator when the units are disconnected
from the mains.
1.8 Unauthorised modification
and changes
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 Intended use
The units are designed exclusively for drying and
dehumidification purposes in industrial or commer-
cial situations on the basis of their structural design
and equipment. The units must only be operated
by appropriately instructed personnel.
Any different or additional use is a non-intended
use. The manufacturer/supplier assumes no lia-
bility for damages arising from non-intended 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.
The threshold values specified in the technical
data must not be exceeded.
1.10 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative com-
plete 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 "Gen-
eral business and delivery conditions". Further-
more, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
1.11 Transport and packaging
The devices are supplied in a sturdy shipping con-
tainer. 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!
1.12 Environmental protection
and recycling
Disposal of packaging
All products are packed for transport in environ-
mentally friendly materials. Make a valuable contri-
bution to reducing waste and sustaining raw mate-
rials. Only dispose of packaging at approved
collection points.
Disposal of equipment and components
Only recyclable materials are used in the manufac-
ture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not dis-
posed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recy-
cling specialists or at collection points.
REMKO LTE
6

2 Technical data
2.1 Unit data
Unit type LTE 120
Operating range, temperature °C 3 to 32
Operating range, humidity % RH 40 to 100
Dehumidification capacity max. l/day 116
At 30 °C/80 % RH l/day (DER) 1) 102.4
At 20 °C/70 % RH l/day (DER) 1) 62.5
At 10 °C/60 % RH l/day (DER) 1) 18.2
Max. airflow volume m3/h 960
Compressor / condenser - design Rotary piston
Refrigerant 2) R410A
Refrigerant quantity g 1270
Power supply V/Hz 230/1~/50
Max. rated current consumption A 6.8
Max. power consumption kW 1.38
At 20 °C / 70 % RH kW 1.0
Customer-provided electrical protection A 16
Type of connection Y
Enclosure class IP20
Sound pressure level LpA 1 m 3) dB(A) 53
Sound power level LwA 1 m dB(A) 61
Electronic start safeguard Series
Operating hours counter Series
Power meters Series
Hot gas defrosting Series
Hygrostat Series
Room temperature sensor Series
Condensate pump, built-in Option
Hose length (condensate pump) m 5 (10 4))
Delivery height (condensate pump) m 5
7

Unit type LTE 120
Dimensions
Depth mm 750
Width mm 705
Height mm 964
Height incl. transportation bracket mm 967
Weight kg 70.0
EDP no. 618900
EDP no. Unit with condensate pump 618905
1) (DER) = Dehumidification output figure in accordance with DIN EN 810
2) Contains greenhouse gas according to Kyoto protocol
3) Noise level measurement DIN 3744 - KL 2
4) Max. permissible hose length
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
REMKO LTE
8

3 Design and function
3.1 Air dehumidification -
general note
The correlations occurring when air is dehumidified
are based on physical laws. These are depicted
here in graphical form in order to provide you with
a brief overview of the principles of air dehumidifi-
cation
The use of REMKO air dehumidifiers
nEven if windows and doors are well insulated,
water and moisture are still capable of pene-
trating thick concrete walls.
nThe water required for setting in the production
of concrete, mortar and plaster etc. may only
be diffused after 1-2 months.
nEven moisture trapped in the masonry after
high-water or a flood is released very slowly.
nThe same is also true of moisture contained in
stored materials for example.
The moisture (water vapour) released from parts of
a building or materials is absorbed by the sur-
rounding air. As a result, the moisture content
increases, which ultimately gives rise to corrosion,
mould, rot, peeling of paint and other unwanted
damage. By way of example, the diagram below
shows the corrosion rate of metal in different levels
of humidity.
A
B
Fig. 1: Corrosion rate in relation to relative humidity
A: Corrosion rate
B: Relative humidity [%]
It is evident that the corrosion rate below 50% rela-
tive humidity (RH) is low, and below 40% is negli-
gible.
The corrosion rate increases significantly above
60% RH. This threshold for damage as the result
of humidity also applies to other materials, such as
powdery substances, packaging, wood and elec-
tronic units.
Buildings may be dried in a variety of ways:
1. By heating and air exchange: The air in the
room is heated in order for moisture to be
removed and then this air is fed outside. All
of the energy that is involved is lost together
with the moist air that is released.
2. By air dehumidification: The moist air that is
present within an enclosed space is continu-
ously dehumidified in accordance with the
condensation principle.
With regard to energy consumption, air dehumidifi-
cation has one distinct advantage:
Energy expenditure is limited exclusively to the air
volumes present. The mechanical heat that is
released by the dehumidification process is fed
back into the room.
NOTICE!
Under normal use, the air dehumidifier uses
approximately 25% of the energy that is
required for the "heating and ventilating" prin-
ciple.
9

Relative air humidity
Our ambient air is a gaseous mixture which always
contains a certain volume of water in the form of
water vapour. This volume of water is specified in g
per kg of dry air (absolute moisture content).
1m3 of air weighs approx. 1.2 kg at 20 °C
Depending on the temperature, each kg of air is
only capable of absorbing a certain volume of
water vapour. Once this capacity has been
reached, the air is referred to as "saturated" and
has a relative humidity (RH) of 100%.
Relative humidity is understood to mean the ratio
between the current quantity of water vapour in the
air and the maximum possible quantity of water
vapour at the same temperature. The ability of the
air to absorb water vapour increases as the tem-
perature rises. I.e. the maximum possible (abso-
lute) water content becomes greater as the tem-
perature rises.
Temp. Water vapour content in g/m3
at humidity of
°C 40% 60%
-5 1.3 1.9
+10 3.8 5.6
+15 5.1 7.7
+20 6.9 10.4
+25 9.2 13.8
+30 12.9 18.2
°C 80% 100%
-5 2.6 3.3
+10 7.5 9.4
+15 10.2 12.8
+20 13.8 17.3
+25 18.4 23.0
+30 24.3 30.3
Drying materials
Building materials and structures are capable of
absorbing considerable volumes of water, such as
brick 90-190 l/m³, heavy concrete 140-190 l/m³ and
limestone 180-270 l/m³. The drying of moist mate-
rials such as masonry is effected as follows:
The moisture moves from the inside of the material
to its surface.
Fig. 2: Drying damp masonry
nEvaporation occurs on the surface = Transfer
of water vapour to the ambient air
nThe air containing water vapour is constantly
circulated through the REMKO air dehumidifier.
The air is dehumidified and, slightly heated,
leaves the unit in order to re-absorb water
vapour
nIn this way, the moisture contained in the mate-
rial is reduced gradually
The material is dried!
The accumulated condensate is collected in the
unit and drained off from there.
Fig. 3: Extracting and collecting condensate
REMKO LTE
10

Functional principle of the air dehumidifier
As it flows through or over the evaporator, the air stream is cooled to dew point. The water vapour con-
denses, and is collected in a condensate trap from where it is drained off.
2
1
A
B
C
a
Fig. 4: Functional principle of the air dehumidifier
1: Evaporator
2: Condenser
A: Air temperature
B: Air direction
C: Humidity
a: Progression
The condensation of water vapour
Because the capacity for the maximum possible
volume of water vapour increases as the air is
heated, the volume of water vapour contained
remains constant and so relative humidity falls.
In contrast, because the capacity for the maximum
possible volume of water vapour decreases as the
air is cooled, the volume of water vapour contained
remains constant and so relative humidity
increases. If the temperature continues to fall, the
capacity for the maximum possible volume of water
vapour is reduced so much so that it is ultimately
equal to the volume of water vapour contained in
the air.
This temperature is referred to as the dew point. If
the air is cooled to below dew point, the volume of
water vapour in the air will become greater than
the maximum possible volume of water vapour. At
this point, the water vapour begins to precipitate. It
then condenses to water. Humidity is then
removed from the air.
Examples of condensation include steamed-up
window panes in winter, or the moisture on the out-
side of a cold drinks bottle.
As the relative humidity of the air increases, so too
does the dew point, making it easier for the tem-
perature to fall below it.
Condensation heat
The energy transferred to the air from the con-
denser consists of:
1. the amount of heat derived beforehand in the
evaporator
2. the electrical drive energy
3. the condensation heat released by the lique-
fying of the water vapour.
11

Energy must be supplied when liquid is converted
into a gas. This energy is designated as evapora-
tion heat. It does not cause any increase in tem-
perature, but is required to convert a liquid into a
gas. Conversely, energy is released when gas is
liquefied, this is designated as condensation heat.
The amount of energy from evaporation heat and
condensation heat is the same.
For water, this is: 2250 kJ/kg (4.18 kJ = 1kcal)
From this it is evident that the condensation of
water vapour causes a large quantity of energy to
be released. With drying operations, a heat cycle is
created, whereby heat is consumed for evapora-
tion and released for condensation.
Generally speaking, the time required for the
drying process is not only dependent on the
output of the unit, but is determined to a greater
extent by the speed at which the material or
building section loses its moisture.
3.2 Unit description
The units have been designed for universal and
straightforward air dehumidification.
Their compact dimensions allow the unit to be
transported and set up with ease.
The units operate in accordance with the conden-
sation principle and are equipped with a hermeti-
cally sealed refrigerant system, low-noise and low-
maintenance fan, operating hours and energy
counter as well as a connection cable with plug.
Fully-automatic electronic controller, a condensate
container with integrated overflow protection in
addition to connection ports for direct condensate
drainage help to ensure continuous fault-free oper-
ation.
The units conform to the fundamental health and
safety requirements of the appropriate EU stipula-
tions. The units are dependable and offer ease of
operation.
Locations at which units are used
The units are used in all locations, where dry air is
a must and where economic consequential
damage (such as that caused by mould) must be
prevented.
The units may be used for the drying and dehumid-
ification of areas such as:
nNew buildings, industrial buildings
nBasements, storage rooms
nArchives, laboratories
nWeekend homes, caravans
nBathrooms, wash rooms and changing rooms
etc.
Operating sequence
Switching on the unit puts the electrical control into
operation. The green "COMP
. ON" indicator light
on the control panel illuminates. Due to an auto-
matic pressure equalisation, the units start with a
time delay of around 10 seconds.
The fan extracts the moist room air through the
dust filter, evaporator and the condenser behind.
Heat is removed from the room air on the cold
evaporator. The air is then cooled to below dew
point. The water vapour contained in the room air
is then deposited as condensate or rime on the
evaporator fins.
If the temperature sensor here measures a pre-set
minimum, it activates a timer with a 30 minute
delay. If the evaporator temperature stops
increasing during this period, the cooling cycle
switches to hot gas defrosting after the timer cycle.
The fan remains out of operation during the
defrosting phase.
As soon as the rime (ice) has been defrosted and
the temperature at the probe has increased, the
unit switches back to normal dehumidification
mode.
If the room temperature is sufficiently high, the sur-
face of the fins will not be cold enough for rime for-
mation to occur, rendering defrosting unnecessary.
Therefore, the air dehumidifiers work economically.
The cooled and dehumidified air is re-heated by
the condenser (heat exchanger), and blown back
into the room through the outlet grille. The pro-
cessed, dry, heated air then re-mixes with the room
air.
Continuous circulation of the room air through the
unit gradually reduces the relative humidity (% RH)
in the room to the desired humidity level.
Depending on the room temperature and the
humidity, only 30-40 % electrical energy is
required, in accordance with the output of the unit.
REMKO LTE
12

Fig. 5: Air dehumidification operating principle
A: Dehumidified room air
B: Moist room air
1: Fan
2: Condenser
3: Evaporator
4: Compressor
13

4 Assembly
4.1 Setting up the unit
For the best economic and safe use of the units,
the following notes must be followed in full:
nThe units must be set up in an upright and
level position, to ensure that the condensate
can drain freely
nTo ensure optimum air circulation, the units
should be set up in the centre of the room,
where possible
nIt must be ensured that the air can be sucked
in on the front of the unit and blown out of the
rear of the unit without obstruction
nObserve a minimum clearance of 50 cm from
walls at all times
nUnits must never be set up in the immediate
vicinity of heaters or other sources of heat
nThe room being dried or dehumidified must be
closed to the surrounding atmosphere
nAir circulation is improved if the unit is set up
approx. 1 m above the ground
nAvoid having opened windows and doors etc.,
and avoid frequent entry to or exit from the
room as much as possible
nIf the units are to be used in dusty environ-
ments, appropriate care and maintenance
measures should be taken in accordance with
the relevant conditions
nThe output of the unit is entirely dependent on
the conditions inside the room, room tempera-
ture, relative humidity and observance of the
set-up instructions
nThe units may not be used in environments
containing a great deal of dust or chlorine, or in
places with atmospheres containing ammonia
Fig. 6: Setting up the unit
NOTES:
–Keep windows and doors closed!
–Keep at least 0.5 m away from walls.
–Maintain adequate clearance from heaters
or other sources of heat.
4.2 Unit transport
For easy transportation, the units are equipped
with 2 large wheels and an ergonomic transporta-
tion handle and protective frame. This can also be
dismantled easily if required.
When transporting the units, observe the following:
1. Before each change of location, switch off
the unit and remove the power plug from the
mains socket.
2. Only transport the units in an upright position
where possible.
3. If the unit was transported on its side, you
must wait 1 hour with the unit in an upright
position before switching on.
NOTICE!
Beware of dripping condensate. After switching
off the units, the evaporator may continue to
defrost under the influence of the ambient tem-
perature.
WARNING!
The mains cable must never be used as a pull
cord or fixing device.
REMKO LTE
14

5 Electrical wiring
5.1 General notes
nThe units are operated with 230 V / 50 Hz
alternating current
nThe electrical connection is made using a built-
in mains cable with earthed safety plug
WARNING!
The electrical connection to the units must be
made at feed-points with residual current
devices in accordance with VDE 0100, Section
704. When installing the units in extremely
damp environments such as laundry rooms,
showers etc., the unit must secured with a
residual current device provided by the cus-
tomer in accordance with the regulations.
nExtensions to the connection cable may only
be carried out by authorised electricians, sub-
ject to the length of the cable, connected load
of the unit and taking into consideration how
the unit is used at its location
CAUTION!
All cable extensions must only be used in fully
un-reeled or reeled off condition.
5.2 Electrical wiring diagram
A
B
21 4
35 6 7 8
9
1 2 3 4 5 6 7 8
PE PE PE
C
PE L N
11
PE
10
Fig. 7: Electrical wiring diagram
A: Control board
B: Display circuit board
C: Optional
1: Power supply
2: Compressor
3: Solenoid valve
4: Fan motor
5: Evaporator probe
6: Condenser probe
7: RESET button
8: Humidity probe
9: Fuse 3.15A 250V
10: Fuse 1A
11: Condensate pump
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
15

6 Commissioning
Before commissioning the unit or if local require-
ments dictate, the air-inlet grille and air-outlet grille
must be checked for contamination.
NOTICE!
A contaminated grille or filter must be cleaned
or replaced immediately.
Important notes prior to commissioning
nAll extensions to the electrical connection must
be of a sufficient cable size and must only be
used fully rolled out or unrolled.
nNever use the power supply connection cable
as a pull cord.
nAfter being switched on, the units operate fully-
automatically until switched off by the float
when the condensate container is full.
nThe condensate container must be inserted
properly.
nIn order to prevent damage to the condenser,
the units are equipped with a mechanism that
prevents the compressor from being immedi-
ately switched back on after it is switched off
The compressor only switches back on
after a waiting time of approx. 1 minute!
NOTICE!
In room temperatures below 10 °C and relative
humidity below 40%, economical use of the unit
can no longer be guaranteed.
Starting the unit
Start the unit as follows:
1. Plug the unit's power plug into a properly
installed and fused mains socket (230V/50
Hz).
If you connect the dehumidifier to the mains,
the unit should be switched off (not oper-
ating). The segment display and LED indica-
tors illuminate for 3 seconds (the humidity
display shows "88" and the hour counter dis-
play shows "88888.8"). After that the seg-
ment display for the humidity [3] shows the
environmental humidity and the display for
the operating hours counter and the energy
counter [6] shows the operating hours
counted for the compressor.
2. Set up a collection container or transfer the
condensate hose to a suitable drain.
3. Actuate the "ON / OFF" key.
The green "COMP. ON" indicator light illumi-
nates. The unit switches on with a time delay
of around 10 seconds and then runs in con-
tinuous operating mode.
The unit will now operate fully-automatically
until the desired relative humidity (% RH) has
been reached.
Automatic restart after power failure:
If the electrical power fails or if the power plug is
pulled out during operation, the unit switches off.
When the unit is switched back on again or if the
power plug is put back in again the unit starts up
again automatically after a safety delay time of 70
seconds.
REMKO LTE
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Control and display panel:
2 14 3 56
789101112
Fig. 8: Control panel
1
ON / OFF key:
After actuating the ON / OFF key whilst switched
off, the unit starts as soon as the humidity in the
room (RH) is 4 % higher than the target value set
for the humidity in the room. The start sequence is:
Fan motor ON → solenoid valve ON 10 seconds
and then OFF → compressor ON. If the room
humidity is lower than the target value set for the
humidity in the room, then the "COMP. ON" indi-
cator flashes and the unit is in standby mode (not
operating).
If the ON / OFF key is actuated during operation,
the unit and the COMP ON" display switch off. The
ON / OFF delay time of the compressor is 1
minute.
2
SET HUMIDITY - Desired humidity setting:
After the unit is switched on, the target room
humidity can be adjusted up or down by pressing
the arrow keys. As soon as the room humidity rea-
ches the target humidity set, the compressor and
the fan motor stop. The target room humidity set is
displayed for 3 seconds during the adjustment and
then reverts to the current measured room
humidity.
NOTE:
nIf the unit is restarted it reverts to the pre-
vious setting
nThe adjustment steps for the target humidity
are 5 % ( RH) per key press. The adjustment
range for the target humidity should lie
between 30 % and 70 % ( RH)
If the humidity lies below the target humidity set
(i.e.: rRH < -3%), the compressor and the fan
motor stop. If the humidity is higher than the target
humidity set (i.e.: rRH > +4%), the unit restarts
with a 3 minute delay.
Example: If the target humidity = 50 % RH, but the
room humidity is 47 % RH, then the compressor
and fan motor stop and the "COMP. ON" indicator
flashes (standby display!). While the room humidity
rises to 54 % RH, the unit restarts with a 3 minute
delay time in accordance with the start function
sequence.
The target room humidity value must be set within
3 seconds by pressing the up arrow or down arrow
keys. Then the current room humidity is displayed
again.
3
Segment display for humidity, room temper-
ature and malfunction code:
The standard display is the current measured room
humidity. The humidity value to be changed is dis-
played for 3 seconds by pressing one of the arrow
keys [2] to set the target room humidity. If the
ROOM TEMP key is pressed, the current meas-
ured room temperature is shown in the display for
5 seconds and then the display automatically
switches back to the current measured room
humidity.
17

Function or situation Segment display
Power plug is plugged in, the unit is
switched offCurrent measured room humidity is displayed
The unit starts Current measured room humidity is displayed
During the adjustment of the target room
humidity
The target room humidity set is displayed
Upon actuation of the ROOM TEMP. Key The current measured room temperature is
displayed for 5 secs
Is a malfunction is present Error code is displayed
4
Room temperature key (RT) - To display the
room temperature:
By actuating the "ROOM TEMP." key, the red RT
°C indicator illuminates and the current room tem-
perature is displayed for 5 seconds in the segment
display [3]. Then the current measured room
humidity appears again automatically.
5
COUNTED key - to display the electrical
power consumed or the compressor run-time
counted:
By actuating the "COUNTED" key, the "kWh" indi-
cator illuminates and the electrical power (kW) con-
sumed by the unit is displayed in the segment dis-
play [6].
Actuating the "COUNTED" key again switches off
the "kWh" indicator and the operating hours (h) of
the compressor are displayed in the segment dis-
play [6].
6
Segment display - display of the electrical
power consumed or the compressor run-time
counted:
In standby mode, the current compressor run-time
(h) is displayed in the segment display [6] or, by
actuating the "COUNTED" key, the electrical power
consumed (kWh).
The segment display [6] shows the operating hours
of the compressor or the electrical power con-
sumed by the unit. The display shows values from
"0.0" to "99999.9"
7
COMP
. ON INDICATOR:
If the compressor is running, this indicator is illumi-
nated. If the compressor is stops, the indicator
flashes.
The unit has a 3 minute restart delay for the com-
pressor as a safety function. This means that the
compressor requires 3 minutes to restart after it
has stopped due to having reached the target
room humidity set. The "COMP. ON" indicator
flashes during the 3-minute protection period
8
DEFROST INDICATOR:
If the temperature of the evaporator (Te) is <= 1 °C
and the compressor runs for more than 5 minutes,
the DEFROST indicator flashes and the 30-minute
delay timer for the defrost function starts.
Defrost function: Compressor still ON, fan motor
OFF, solenoid valve ON, DEFROST indicator illu-
minates. If the temperature of the evaporator (Te)
is >= 3 °C then the defrost function stops and the
DEFROST indicator extinguishes.
Function of the unit after defrost: Compressor ON,
fan motor ON, solenoid valve OFF, DEFROST indi-
cator off
9
"CHECK" indicator:
If there is an abnormal situation (malfunction), the
CHECK indicator [9] illuminates or flashes. If the
temperature probe (Te or Tc) or the humidity probe
is defective, the unit switches off and the indicator
light [9] illuminates. Then the error code (E1, E2,
E4 or E5) is displayed in the segment display [3].
If the temperature of the condenser (Tc) is over
50 °C while the unit is running, the indicator light
(CHECK) flashes.
There are two types of protective function for the
Tc over-temperature (50 °C):
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18

If Tc is >50 °C and the compressor runs within 5
minutes, the unit switches off and the error code
"E3" is shown in the segment display [3] and the
CHECK indicator [9] flashes. In this case, the fault
cannot be reset with a key press. The unit power
plug must be removed from the socket so that the
unit is completely de-energised. Then, the dehu-
midifier can be restarted after a restart delay of 70
seconds.
If Tc is > 50 °C and the compressor runs over 5
minutes, the compressor stops but the fan motor
continues to run for a further 30 minutes. The seg-
ment display flashes with fault code E3 during this
time. After 30 minutes the unit is restarted for
normal function with the previous setting.
NOTE:
nWithin this 30 minute protective period, the
"ON / OFF" key can be pressed in order to
switch the unit off. If the "ON / OFF" key is
then pressed, the unit restarts after a delay
time of 1 minute.
10
RT °C INDICATOR:
If the "ROOM TEMP" key is pressed, the RT indi-
cator [10] illuminates for 5 seconds.
11
"FULL TANK" DISPLAY:
Is not used
12
kWh INDICATOR:
By actuating the "COUNTED" key, the "kWh" indi-
cator illuminates and the electrical power in kW
consumed by the unit is displayed in the segment
display [6].
19

Function table:
Functions Power plug
inserted
Operating status: Unit oper-
ating or in standby Defrost function
OFF
(no operation)
Standby
(no operation)
r RH <-3 %
The unit starts
r RH >+4 %
30 min. timer
expires if
Te<=1 °C
After the
30 mins.
defrost timer
function has
passed
Comp. ON LED OFF Flashes ON ON ON
Check LED OFF OFF OFF OFF OFF
Defrost LED OFF OFF OFF Flashes
ON
If
Te >=3 °C,
then OFF
Full Tank LED Is not used
Solenoid valve OFF OFF
ON
for 10 sec.
then OFF
OFF
ON
If
Te >=3 °C,
then OFF
Fan motor OFF OFF
ON
after
10 sec.
ON
OFF
If
Te >=3 °C,
then ON
Compressor OFF OFF
ON
after
10+0.5 sec
ON ON
Humidity segment
display [3] Current room humidity is displayed
Operating hours /
power consumption
segment display [6]
Operating hours or power consumption are displayed
(changeover by actuating the "h/kWh" key)
REMKO LTE
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