REMKO MD261 Handleiding

REMKO Airco MD261

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Issue GB – T11
REMKO MD
MD 261, MD 351
Inverter wall - room air conditioner in split design
Operation · Technology · Spare parts
Contents
These operating instructions are to be read carefully
prior to commissioning / operation of the device!
These instructions are part of the unit and must always
be kept in the vicinity of the installation site or on the device.
Subject to modifications; No liability accepted for errors or misprints!
Safety notes 4
Environmental protection and recycling 4
Warranty 4
Transport and packaging 5
Description of the equipment 5
Operation 6-12
Shutdown 13
Care and maintenance 13-14
Troubleshooting and customer service 15-16
Installation instructions for qualified personnel 16-19
Installation 19-21
Tightness check 21
Condensation connection 22
Electrical connection 22-23
Electrical connection diagram 23
Electrical circuit diagram 24
Before start up 25
Add refrigerant 25
Commissioning 25-26
Unit dimensions 27
Product illustration 28-29
Spare parts list 28-29
Technical data 30
Made by REMKO
3
Safety notes
Disposal of packaging
All products are packed for
transport in environmentally
friendly materials. Make a valuable
contribution to reducing waste
and sustaining raw materials. Only
dispose of packaging at approved
collection points.
Disposal of old
equipment
Our Production department is
under constant quality control.
Only top quality materials are
processed, the majority of which
are recyclable. Do your part
to protect the environment by
ensuring that your old unit is
disposed of according to regionally
valid regulations, for example in
authorised disposal and recycling
centres or collection points.
Warranty
Prerequisite for any warranty claims
is that the purchaser or his client
has completely filled out the
"warranty registration card"
included with any unit within the
relevant time period of sale and
initial operation and returned the
completed card to REMKO GmbH
& Co. KG.
The warranty conditions are
listed in the „General business
and delivery conditions“. The
contractual parties can also agree
additional terms beyond the scope
of the above. For this reason please
contact your direct contracting
partner first.
Environmental
protection
and recycling
Carefully read this manual before
starting the unit for the first
time. They contain useful tips,
information as well as hazard
warnings to prevent injury or
material damage. Non-observance
of this manual may endanger
persons, the environment as well as
the equipment itself and will void
any claims for liability.
■ Store this manual as well as
the refrigerant datasheet in the
vicinity of the unit.
■ The unit should only be set
up and installed by qualified
personnel.
■ The setup, connection and
operation of the unit and
its components must be in
accordance with the operating
conditions stipulated in this
manual and comply with all
applicable local regulations.
■ Units designed for mobile use
should be safely set up on a
suitable floor and in a vertical
position. Units designed for
stationary use should only be
operated in their permanently
installed state.
■ It is prohibited to make
modifications or changes to
equipment or components
supplied by REMKO as this may
cause malfunctions.
■ Equipment and components
should not be operated in areas
where there is a heightened
damage risk. Observe the
minimum clearances.
■ The electrical supply should
be adapted to fulfil the
requirements of the unit.
■ The operational safety of
equipment and components is
only assured providing they are
used as intended and in a fully
assembled state. Safety devices
should not be modified or
bypassed.
■ Do not operate equipment
or components with obvious
defects or signs of damage.
■ All housing parts and openings,
e.g. air inlets and outlets, must
not be blocked by foreign items,
fluids or gases.
■ The equipment and components
must be kept a safe distance
from inflammable, explosive,
combustible, aggressive and
dirty areas or atmospheres.
■ Persons coming into contact
with equipment parts may suffer
burns or injury.
■ Installation, repair and
maintenance work should only
be carried out by authorised
specialists. Inspection and
cleaning can be performed
by the operator providing the
equipment is not under voltage.
■ Take appropriate hazard
prevention measures when
performing installation, repair or
maintenance work or cleaning
the equipment.
■ The equipment or components
should not be exposed to any
mechanical stresses, extreme
levels of humidity or direct
exposure to sunlight.
REMKO MD
4
Operation
Infrared remote control
The infrared remote control sends
the programmed settings over
a distance of up to 6 m to the
receiver of the indoor unit. Data
will only be received correctly if
the remote control is pointed at
the receiver and no objects are
obstructing the transmission path.
First insert the supplied batteries
(2 x type AAA) into the remote
control. To do so, pull off the flap
of the battery compartment and
insert the batteries according to
their polarization (see marks).
The indoor unit is easy to operate using an infrared remote control. This is supplied as standard. The indoor unit
beeps to acknowledge the correct transmission of data. If it is not possible to program
the indoor unit using the remote control, it can also be manually operated.
Problems are shown in code
(see chapter Troubleshooting
and Customer service).
CAUTION
Immediately replace flat batter-
ies with a new set, otherwise
there is a risk of leakage. It is
recommended that the batteries
are removed if the equipment is
shut down for long periods.
NOTE
Display on indoor unit
The display lights up according to the settings.
Manual operation
The indoor unit can also be started
manually. After the air inlet screen
has been opened, the inner
recessed button can be pressed and
automatic mode can be activated.
In manual operation, the following
settings apply:
Cooling mode: 24°C,
Fan speed AUTO
Heating mode: 26°C,
Fan speed AUTO
By pressing the button of the infra-
red remote control, the manual
operation is interrupted.
max. 6 m
Maximum distance
Display on indoor unit
Display
Defrosting / heating Compressor speedAutomatic mode
Timer
activated/deactivated Display for setpoint
and gauge
REMKO MD
6
"FAN" button
Press this button to set the
required fan speed.
4 settings are available:
automatic, high, medium and
low fan speed.
"SLEEP/TURBO" Button
Pressing this button will
automatically increase or
decrease the target temperature
by 1 °C within an hour in
cooling and heating mode
respectively.
With the TURBO function, the
the maximum fan speed can be
activated.
"SWING" Button
This button directly activates
the oscillating function of the
fins for better air distribution in
the room.
"AIR DIRECTION" Button
With this button, the desired fin
position can be set. There are
5 positions and an oscillating
function available.
"TIMER-ON" Button
This button serves to program
the automatic activation time
for the device within the next
24 hours.
"TIMER-OFF" Button
This button serves to program
the automatic switch-off time
for the device within the next
24 hours.
Buttons on the remote control
"ON/OFF" Button
Press this button to start the
unit.
"MODE" button
Press this button to select the
operating mode. The indoor unit
has 5 modes:
1. Automatic mode
In this mode, the unit works in
cooling or in heating mode.
2. Cooling mode
In this mode, the warm room
air is cooled to the desired
temperature.
3. Dehumidifying mode
In this mode the room is mainly
dehumidified, the adjusted
temperature is retained.
4. Heating mode
In this mode, the warm air in
the room is warmed up to the
desired temperature.
5. Circulation mode
In this mode, the air in the room
is recirculated.
Temperature selection is not
possible.
Button "▲"
With this button, the desired
temperature can be increased
up to 30 °C.
Button "▼"
With this button, the desired
temperature can be reduced
down to 17 °C.
Buttons on the remote control
7
A symbol is shown on the display to indicate that the settings are being transferred.
By pressing the ON / OFF button, you can activate or deactivate your
unit. The programmed settings and adjustment values before the unit
was turned off will appear on the display.
ON/OFF Button
ON/OFF ON/OFF
Au to
Use the MODE button to select between the individual operating modes.
A total of 5 modes are available:
1. automatic selection of cooling or heating operation Automatic
2. predominantly summer operating mode Cooling
3. summer or winter operating mode Dehumidification
4. predominantly winter operating mode Heating
5. only for circulation of airAir circulation
MODE Button
MODE
Automatic Cooling Dehumidification Heating Air circulation
MODE MODE MODE MODE
SET TEMP
Auto
SET TEMP
Au to
SET TEMP
SET TEMP
SET TEMP
SET TEMP
In automatic mode, the control system autonomously selects between
heating, cooling and circulating modes. The nominal temperature
can only be preselected in a different mode and is then assumed by
automatic mode.
AUTOMATIC Mode
Cooling
or
Heating
The nominal temperature is
under the room temperature
SET TEMP
Aut o
SET TEMP
▲
▼
OR
or
AIR
CIRCULATION
The nominal temperature is
above the room temperature
The
p q/
buttons can be used to reduce and increase the desired nominal
temperature.
pq
Buttons
pq
SET TEMP
SET TEMP
SET TEMP
SET TEMP
ON/OFF
Au to
Button functions
REMKO MD
8
> 6 Min.> 3 Min.> 6 Min.
30 sec. 30 sec.
Nominal temperature
Nominal temperature
-2°C
Fan operation IT
Fan operation AT
Compressor operation AT
Actual
temperature Start cooling mode
Cooling mode
Stop cooling mode
Functional diagram
Operation
Stop
In cooling mode, the air in the room is cooled down to the adjusted
nominal temperature. The desired room temperature is set with the
▲ ▼/ buttons in 1 °C increments. If the room temperature is 1 °C
above the selected nominal temperature, then the indoor unit starts
to cool down the air in the room. The inverter controller checks the
difference between the adjusted nominal temperature and the actual
room temperature. In the event of a greater difference, a higher cooling
performance is created. In the event of a smaller difference, a lower
cooling performance is created. This serves to maintain the air discharge
temperature and the room temperature.
If the adjusted room temperature is lower than approx. 2 °C, then the
control system turns the cooling function off. To protect the compressor,
the regulation only turns the cooling on again after a waiting period of 3
minutes.
COOLING Mode
SET TEMP
COOLING
OPERATION
SET TEMP
▲
▼
OR
SET TEMP
In dehumidication mode, the room temperature is set to 24 °C. Due to
the low temperature of the refrigerant, the dew point of the air on the
evaporator is lower. The excess moisture in the air is condensed by the
evaporator, the room is dehumidied. The fan speed should be set to
automatic in order to achieve a maximum level of dehumidication. In
automatic mode, the fan is switched on and off in intervals.
DEHUMIDIFICATION MODE
DE-
HUMIDIFICATION
MODE
30 sec.
Nominal temperature
Nominal temperature
-2°C
Fan operation IT
Fan operation AT
Compressor operation AT
Actual
temperature Start
Dehumidifying mode
Dehumidifying mode
Stop
Dehumidifying mode
Functional diagram
Operation
Stop
Low fan speed
SET TEMP
SET TEMP
▲
▼
OR
SET TEMP
ON/OFF
MODE
Au to
MODE
Tur bo
9
HEATING-
MODE
Heating mode operational sequence
> 6 Min.> 3 Min.> 6 Min.
30 sec. 30 sec.
Nominal temperature
+5 °C
Nominal temperature
+2 °C
Fan operation IT
Fan operation AT
Compressor operation AT
Actual
temperature Stop heating
operation
Heating mode
Start heating
mode
Functional diagram
Operation
StopReverse flow valve
30 sec. 30 sec.
During the defrosting cycle, the indoor unit vaporiser fan and the
outdoor component liquefier fan are switched off.
After the cycle is concluded, the fans are switched to their previous
settings.
< 7 Min.
Defrost period
15 sec. 60 sec.
Fan operation IT
Fan operation AT
Compressor operation AT
Operation
Stop
Reverse flow valve
30 sec. 30 sec.
30 sec. 3 Min.
▲
▼
OR
SET TEMP
MODE
Tur bo
In the heating mode, you can heat the room in spring or fall. The desired
room temperature is set with the buttons in 1 °C increments. If ▲ ▼/
the room temperature is 1 °C below the selected nominal temperature,
then the indoor unit starts to warm up the air in the room. The
inverter controller checks the difference between the adjusted nominal
temperature and the actual room temperature.
In the event of a greater difference, a higher cooling performance is
created.
In the event of a smaller difference, a lower cooling performance is
created.
This serves to maintain the air discharge temperature and the room
temperature.
If the adjusted room temperature is still exceeded by approx. 2 °C,
then the control system turns the heating function off. To protect the
compressor, the regulation only turns the heater on again after a waiting
period of 3 minutes.
In heating mode, the indoor unit fan motor is switched on after a delay,
in order to prevent the discharge of cold air.
The outdoor unit fins could crack at low external temperatures.
The reversal of the cooling circuit undertakes defrosting in intervals. The
display shows "H1" during the defrosting period.
HEATING Mode
SET TEMP
FAN
REMKO MD
10
The fan speed can be adjusted with this button. A selection can be made
between low, medium, high and automatic fan speed.
FAN Button
FAN
In ventilation mode, the air in the room is only circulated.
The room temperature cannot be changed in this mode.
The cooling or heating operation is not activated.
AIR CIRCULATION Mode
AIR CIRCULATION
SET TEMP
MODE
Tur bo
FAN
Turb o
Tur bo
FAN
Tur bo
FAN
Tur bo
FAN
Tur bo
With the button a programming function is activated, which causes the
nominal temperature in the cooling mode to increase after one hour
by 1°C and after two hours by 2 °C. In heating mode, the nominal
temperature is decreased after one hour by 1 °C and after 2 hours by 2 °C.
The display on the indoor unit goes out.
With the TURBO function, the maximum fan speed can be activated
SLEEP/
TURBO
SLEEP/TURBO Button
Turb o
SLEEP/
TURBO
Tur bo
SLEEP/
TURBO
deactivated deactivated
The oscillating function of the air discharge fins can be adjusted with
this button. The air distribution in the room is improved with the swing
function. In order to adjust the aim the air discharge fins to a particular
direction, the AIR DIRECTION button must be pressed briefly. In order to
activate the automatic swing function, the AIR DIRECTION button must
be pressed for longer than 2 seconds.
SWING and AIR DIRECTION Buttons
SWING SWING
ON TIMER
deactivated
11
The activation and switch-off time can be programmed with this button.
The timer is activated/deactivated by means of pressing the timer on
and the timer off button. The timer symbol ON TIMER or OFF TIMER
appears. The desired activation or switch-off time for the display up to
9.5 (hours) in 30 minute intervals and from displayed 10 in 60-minute
intervals can be adjusted by means of pressing the Timer on or the Timer
off buttons.
When the programmed time has been reached, the device is
automatically turned on or off. If the indoor unit is automatically
switched on, then the mode, the temperature and the fan speed of the
last settings is reactivated.
The prior deletion of the on and off time can be achieved by pressing
On/Off button. The timer display on the indoor unit goes out.
TIMER Button
•
TIMER-ON / OFF
TIMER ON button - activation delay
TIMER ON Activation-
delay
TIMER OFF button - switch-off delay
Switch-off
delay
Manual air distribution
There are individually adjustable
fins for adjusting the horizontal air
distribution on the air discharge
side.
Moving indoor machinery,
e.g. fans, have the potential to
cause injury during operation!
Only make adjustments when
swing operation is switched
off.
CAUTION
Hr.
ON TI MER
Hr.
Off TIMER
Hr.
ON TIM ER
Off TI MER
TIMER
ON
Hr.
ON TIM ER
Off TI MER
TIMER
ON
Hr.
ON TIM ER
Off TI MER
TIMER OFF
Hr.
ON TIM ER
Off TI MER
TIMER
OFF
Hr.
ON TIM ER
Off TI MER
TIMER
OFF
Hr.
ON TIM ER
Off TI MER
Shift lever left
Manual air distribution
Shift lever right
REMKO MD
12
Shutdown
Temporary shutdown
1. Allow the indoor unit to run for
2 to 3 hours in air circulation
mode or in cooling mode at the
maximum temperature setting
in order to remove any residual
moisture from the unit.
2. Shut down the unit using the
remote control.
3. Switch off the voltage supply to
the unit.
4. Cover the unit as far as possible
with plastic foil in order to
protect it from the inuences of
weather.
Permanent shutdown
Ensure that equipment and
components are disposed of in
accordance with local regulations,
e.g. through authorised disposal
and recycling specialists or at
collection points.
Contact REMKO GmbH & Co. KG
or your contract partner for a list
of specialist companies near you.
Care and maintenance
Regular care and maintenance
serves to ensure trouble-free
operation and long service life of
the unit.
Care
■
Ensure the indoor unit and
outdoor component are
protected against dirt, mould
and other deposits.
■
Clean the equipment using a
damp cloth. Do not use any
caustic, abrasive or solvent-
based cleaning products. Do
not use a jet of water.
■
Clean the ns on the indoor
unit and outdoor component
prior to long shutdown periods.
Maintenance
■
It is recommended that
you take out a maintenance
contract with an annual service
from an appropriate specialist
rm.
This ensures the operational
reliability of your equipment!
TIP
Prior to performing any
work, ensure the equipment
is isolated from the voltage
supply and secured to prevent
accidental switch-on!
CAUTION
Type of task
Checks/Maintenance/ Inspections
Commissioning
Monthly
Six-monthly
Yearly
General • •
Measure voltage and current • •
Check compressor/fans are functioning
correctly • •
Check fan is functioning correctly • •
Dirt on liqueer/vaporiser • •
Check refrigerant ll quantity • •
Check condensation drain • •
Test insulation • •
Check moving parts • •
Sealing test for refrigerant circuit • •
The statutory regulations
require an annual sealing test
for the refrigerant circuit in
relation to the refrigerant
lling level. The inspection
and documentation is to be
carried out by corresponding
specialist engineers.
NOTE
13
Cleaning the condensation
pump (optional equipment)
An optional integrated or separate
condensation pump may included
on the indoor unit, which pumps
out any accumulated condensation
into higher positioned drains.
Observe the care and maintenance
instructions given in the separate
operating instructions manual
Cleaning the housing
of the indoor unit
1. Disconnect the supply voltage
to the equipment.
2. Open the intake grille of the
cover and fold it upwards.
3. Clean the guard using a soft,
damp cloth.
4. Switch the supply voltage back
on.
Air lter for indoor unit
Clean the air lter at intervals of
no more than 2 weeks. Reduce this
interval in case of heavily soiled air.
Cleaning the lter
of the indoor unit
1. Disconnect the supply voltage
to the equipment.
2. Open the front side of the
device by means of folding
up the grille and allowing it to
engage .(gure 1)
3. Lift the lter up slightly and pull
it out from underneath.
4. Clean the lter with a
commercially available vacuum
cleaner. In order to do so, turn
the dirty side upward .(Fig. 2)
5. Any dirt can be cleaned off
using lukewarm water and mild
cleaning agents. In order to do
so, turn the dirty side upward
(Fig. 3).
6. If water is used, let the lter
dry out properly in air before
replacing it in the unit.
7. Carefully insert the lter. Make
sure it is seated correctly.
8. Close the front side in reverse
order as described above.
9. Switch the supply voltage back
on.
10.
Switch the unit back on.
2 Clean with a vacuum cleaner 3
Cleaning with lukewarm water
1 Fold grille upwards
REMKO MD
14
Troubleshooting and customer service
The equipment and components are manufactured using state-of-the-art production methods and tested several
times to verify their correct function. If malfunctions should occur, please check the functions as detailed in the
list below. Please inform your dealer if the unit is still not working correctly after all the functional checks have
been performed!
Fault Possible cause Checks Remedial measures
The unit does not start
or switches itself off
Power outage, undervoltage,
defective mains fuse / main circuit
breaker switched off
Are all other electrical installations
functioning correctly?
Check voltage,
possible wait until turned on
again.
Damaged mains cable Are all other electrical installations
functioning correctly? Repair by a certied service centre
Waiting time after switch-on too
short
Have approx. 5 minutes elapsed
since the restart? Plan for longer waiting period
Temperate outside operating
temperature range
Are the fans in the indoor unit
and outside component working
correctly?
Take into account the temperature
range for the indoor unit and
outside component
Overvoltages caused by thunder
storms Has there recently been lightning?
Switch off the mains protection
and switch it back on / have it
checked by a specialist
Fault in external condensation
pump
Did the pump shut down due to
a fault?
Check and if necessary clean the
pump
The unit does not respond
to the remote control
Transmission distance too far /
receiver affected by interference
Does the indoor unit beep when
pressing a button?
Reduce the distance to less than 6
m or change position
Defective remote control Is the unit running in manual
mode? Replace the remote control
Receiver or transmitter unit
exposed to excessive solar
radiation
Does it function correctly in the
shade?
Place the receiver & transmitter
unit in the shade
Electromagnetic elds are
interfering with transmission
Does it function when
switching off possible sources of
interference?
Signal is not transmitted
when interference sources are
operational
Button on remote control jammed /
two buttons pressed at same time
Does the “Send” symbol appear
on the display?
Release the button / only press
one button
Batteries in remote control are at Have new batteries been inserted?
Is the display incomplete? Insert new batteries
The unit is running
but only provides
reduced cooling or heating
performance
Filter is unclean / air inlet / outlet
blocked by foreign items Have the lters been cleaned? Clean the lters
Windows and doors open.
Heating/cooling output increases
Have there been any
constructional /
application-related changes?
Close windows and doors / install
additional units
Neither cooling nor heating mode
has been set
Is the cooling/heating symbol
shown on the display?
Correct the settings for the unit
Fins on outdoor component
blocked by foreign items
Is the fan on the outdoor
component running
and are the ns unobstructed?
Check the fan or winter controller,
reduce the air resistance
Leaking refrigerant circuit Are there signs of frost on the ns
of the indoor unit? Repair by specialist
Condensation is leaking out
of the collection container
drainage pipe Blocked / damaged
Is unrestricted condensation
discharge ensured?
Cleaning of drain pipe and
collector reservoir.
Faulty external condensation
pump or oat
Is the condensation tray full and
the pump running?
Call out a specialist to replace the
pump
Condensation has not drained
away and has collected in the
condensation pipe
Is there a steady fall on the
condensation pipe? Check there is
no blockage in the pipe.
The condensation pipe must have a
fall. If necessary, clean the pipe
Condensation does not drain off
Are the condensation pipes
unblocked and is there a steady
fall? Are the condensation pump
and oat switch functioning
correctly?
The condensation pipe must have
a fall. If necessary, clean the pipe.
A faulty condensation pump and
oat switch should be replaced.
Malfunction
15
Selection of the installation
location
Indoor unit
The indoor unit is designed for
horizontal wall installation above
doors. However, it can also be
used on the upper wall area
(min. 1.75 m from upper edge of
oor).
Outdoor component
The outdoor component is
designed for horizontal base
installation outdoors. It should
be placed on level, at and rm
ground. The unit should also
be secured to prevent toppling.
The outdoor component can be
set up outside as well as inside a
building. For external installation,
please observe the following notes
to protect the unit from weather
conditions.
Wall openings
■
A wall opening of at least 70
mm diameter and 10 mm slope
from the inside to the outside
must be made for each indoor
unit
■
We recommend that the
inside of the hole is padded or
lined, e.g. using a PVC tube,
to prevent the pipes being
damaged.
■
After installation, the wall
opening should be closed off on
the building side with a suitable
sealant. Do not use substances
containing cement or lime!
Installation material
The indoor unit is fastened using a
wall bracket and 4 threaded screws
(provided by the customer).
The outdoor component is
attached with 4 screws via a wall
bracket on the wall or a oor
bracket on the ground.
Minimum clearance to snow
20 cm
Snow
Windbreak
Wind
Pipes and cables in wall breakthrough
Control cable
Condensation pipe
Injection pipe
Suction pipe
PVC tube
Rain
The unit should be at least 10 cm
off the ground when mounted on
the roof or ground. A oor bracket
is optionally available.
Sun
The liqueer on the outdoor
component radiates heat.
Exposure to direct sunlight will
further increase the temperature
of the ns and reduce the
heat output of the nned
heat exchanger. The outdoor
component should therefore be
installed as near as possible to
the north side of the building.
If necessary, take measures
to provide sufcient shade
(responsibility of customer). One
possible solution is to build a small
roof. These measures should not
affect the ow of warm outlet air.
Wind
If the unit is being installed in
windy areas, ensure that the
warm outlet air discharges in the
main wind direction. If this is not
the case it may be necessary to
install a windbreak (provided by
the customer). Ensure that the
windbreak does not adversely
affect the air intake to the unit.
Snow
The unit should be wall-mounted
in areas of heavy snowfall.
Installation should be at least
20 cm above the expected level
of snow to prevent snow from
entering the outdoor component.
An optional wall bracket is
available as an accessory.
17
The units are factory filled with
dry nitrogen to check for leaks.
The pressurised nitrogen is
released when loosening the
union nuts.
CAUTION
Connection of refrigerant
pipes
The on site connection of the
refrigerant pipes is made inside the
unit.
It may be necessary to t a reducer
or ared adapter to the indoor
unit. These ttings are included
as standard. Once installed, the
connections should be made tight
against vapour diffusion.
The following instructions describe
the installation of the refrigerant
circuit and the assembly of the
indoor unit and the outdoor
component.
1.
The required pipe diameters are
given in the table "Technical
data".
2. Remove the factory-tted
protective caps and union
nuts on the connections.
These should be used during
installation.
3. Before anging the refrigerant
pipes, ensure that the union nut
is tted on the pipe.
4. Prepare the laid refrigerant
pipes as shown below
(Figure 6+7).
Only employ tools and
components suitable for
refrigeration applications.
NOTE
Flanging tool
7 Flanging the refrigerant pipe
Refrigerant pipe
Deburrer
6 Deburring the refrigerant pipe
8 Correct ange shape
Tighten 1. spanner
Counter
2. spanner
9 Tighten the tting
Tightening
torque:
14“
15-20 Nm
38“
33-40 Nm
12“
50-60 Nm
58“
65-75 Nm
34“
95-105 Nm
5. Verify that the shape of the
ange is correct .(Figure 8)
6. First connect and hand-tighten
the refrigerant connections
to ensure they are correctly
seated.
7. Now fully tighten the ttings
using 2 suitably sized open-
ended spanners. Use one
spanner to counter the force
when tightening the tting
(Figure 9).
8. Use insulation hoses which are
designed for this temperature
range and diffusion tight.
9. Lay the refrigerant pipes from
the indoor unit to the outdoor
component. In doing so, ensure
that they are sufciently
attached and take measures for
the oil return, if necessary!
10.
Observe the permitted bending
radius for the refrigerant pipes
during installation. Never bend
a pipe twice in the same place.
Brittle pipes and potential
cracking are the consequences.
11.
Use the wall or oor brackets
to t the outdoor component
against structural parts
approved to support the static
load (refer to the installation
instructions for the brackets).
REMKO MD
20
Supplementary information
for Installation
■
For the combination of the
outdoor component with some
indoor units, the connection of
the refrigerant pipes may differ.
In that case, install the provided
reducer or expansion ttings to
the indoor unit.
■
If the basic length of the
refrigerant pipe exceeds
5 m, add refrigerant when
commissioning the system for
the rst time. (See chapter
"Add refrigerant").
12.
Ensure that structure-borne
sound is not transferred to parts
of the building. Use vibration
dampers to reduce the effects
of structure-borne sound!
13.
Prepare the refrigerant pipe
for the outdoor component as
described above.
A vacuum of min. 20 mbar
must be created!
CAUTION
The time required to generate
the vacuum is dependent on the
pipework volume
of the indoor unit and the length
of the refrigerant pipes. This
always takes at least .60 minutes
Once any foreign gases and
humidity have been completely
extracted from the system, the
valves on the pressure gauge
station are closed and the valves
on the outdoor component are
opened as described in the chapter
on "Commissioning".
Tightness check
Once all the connections have
been established, the pressure
gauge station is attached as
follows to the Schrader valve (if
tted):
red = small valve
= injection pressure
blue = large valve
= suction pressure
Once connected, perform a
tightness test using dried nitrogen.
The tightness test involves
spraying a leak detection spray
onto the connections. If bubbles
are visible, the connections have
not been properly made. Re-
tighten the connection or prepare
a new ange.
If the tightness test is successfully
completed, depressurise the
refrigerant pipes and start a
vacuum pump with an absolute
nal partial pressure of min. 10
mbar to remove the air in the pipe.
Any humidity present in the pipes
is also removed.
21
Condensation connection - outdoor unit
Opening for
condensation
connection
Condensation pan of
outdoor component
Condensation connection
All electrical installation work
should be performed by spe-
cialist contractors. Isolate the
voltage supply when connect-
ing the electrical terminals.
CAUTION
Electrical connection
Mains cable must be installed as
voltage supply to the indoor unit
and a control cable to the outdoor
component, with appropriate
safeguards.
Condensation
connection
Due to the dew point shortfall,
condensation forms on the
evaporator during the cooling
operation and on the liqueer
during .heating operation
Below the evaporator is a catch
pan, which must be connected
with a drain.
The lower part of the outdoor
component housing is formed in
the shape of a collection tray. The
condensate connection included
in the scope of delivery is to be
attached here.
■
The condensation pipe should
have a fall of min. 2 %.
(Fig. 10).
If necessary, t vapour diffusion
tight insulation.
■
The condensation pipe from
the unit should run freely
into the drainage pipe. If the
condensation runs directly
into a sewer pipe, t a trap to
prevent any unpleasant odours.
The condensation hose is designed
to be installed on the left side
(view from front).
10
Fall of condensation pipe
minimum
2% fall
■
When operating the unit at
ambient temperatures below
0 °C , make sure to route the
condensation pipe freeze proof.
The lower part of the housing
is also to be kept frost free by
the customer, in order to ensure
permanent draining of the
condensate.
If necessary, t supplementary
pipe heating.
■
After completed routing, check
for unobstructed condensation
discharge and ensure that a
permanent seal is provided.
Connecting the indoor unit
■
We recommend installing a
master / repair switch on the
building near the indoor unit.
■
Voltage is supplied to the
indoor unit, the outdoor unit
is supplied through the control
cable from the indoor unit to
the outdoor unit.
■
The terminal blocks for making
the connections are located on
the front of the unit. When the
unit is installed, measurements
can be made from the front by
removing the cover.
The device's scope of delivery
includes a ve metre long, four-
core control cable for connecting
the indoor unit to the outdoor
component. The control cable to
the outdoor component contains
a data line which serves to realise
communication between the
indoor unit and the outdoor
component. This is used for
controlling the cooling and heating
performance and for forwarding
fault indications to the indoor unit.
REMKO MD
22
Check all plugged and clamped
terminals to verify they are
seated correctly and making a
permanent contact. Re-tighten
as required.
CAUTION
12
Connecting the outdoor component
Terminal block
Control cable
Cover
Control cable to outdoor
component
Strain relief
Terminal block
Voltage supply
Control cable
to outdoor
component
11
Connecting the indoor unit
Voltage
supply
Connecting the outdoor
component
Proceed as follows to connect the
cable:
1. Remove the cover from the side
wall.
2. Select the cable cross-section
according to the relevant
standards.
3. Terminate the cables as shown
on the electrical connection
diagram.
6. Support the cable in the strain
relief and re-assemble the unit.
■
If an optionally available
condensation pump is used on
the unit, then - for the shut
off contact of the pump - an
additional relay to increase the
switching power to shut off the
compressor might be needed.
■
Control cables should be
screened if laid in areas exposed
to strong magnetic elds.
■
Details concerning the electrical
protection of the system are
given in the section on technical
data.
Electrical connection diagram
Connection MD 261 / 351
Outdoor component Indoor unit Mains cable
Neutral conductor
Phase conductor
Earth conductor
230 V~,
50 Hz,
L1 / N / PE
Data line
L1
S
S
NN
L1
Indoor unit
23
Transformer
Electrical circuit diagram
MD 261-351 IT
MD 261-351 AT
Mains cable
230V / 1~ /50 Hz
to outdoor component
Air circulation
sensor
Colour code
A = brown
B = blue
C = black
Y = yellow
R = red
W = white
Y/G = yellow/green
O = orange
C
R
Y
Y/G
R
W
Auto Restart
Sensor Vaporiser
Display-
screen
Swing motor
RS C
U
V
W
RY3
4
CN6
CN7
CN5
CN4
CN28
Cn26
N-B
CN3 CN2CN1
CN15 CN14
CN16
L2
N-A
3
~
~
Cn10
Sensor air inlet
Sensor
Vaporiser
Display-
screen
Fuse 1A 250V
Liqueer sensor
Sensor OLP
Sensor SL
Thermostat
Crankcase heater
Reverse ow valve
Liqueer fan
Condenser
Choke R6025C
Choke R1310/1514
Compressor
R
Y/G
Y/G
Y/G
C
B
BW
Y
R
R O Y
O
Y
B
A
Vaporiser fan
REMKO MD
24

Product specificaties

Merk: REMKO
Categorie: Airco
Model: MD261

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