Remko ATY 351 DC user guide manual

REMKO ATY

ATY 261 DC, ATY 351 DC

Inverter wall - room air conditioner in split - design

Operation · Technology · Spare parts

Edition GB – V08

Contents

Safety notes

Environmental protection and recycling

Warranty

Transport and packaging

Equipment description

Operation

Shutdown

Care and maintenance

Troubleshooting and customer service

Control and resistance

Installation instructions for qualified personnel

Installation

Monitoring for leaks

4

4

4

5

5

6-14

15

15-16

17-18

19

20-23

23-25

25

Condensate drain

Electrical connection

Electrical connection diagram

Electrical circuit diagram

Before commissioning

Add refrigerant

Commissioning

Unit dimensions

Technical data

Exploded view

Spare parts list

Declaration of conformity

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

26

26-27

27

28

28

28

29

30

31

32-33

32-33

34

Made by REMKO

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

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

3

REMKO ATY

Safety notes

Carefully read this manual before
putting commissioning the
equipment. It provides useful
tips and information as well
as hazard warnings to prevent
injury or material damage .
Failure to follow the directions
in this manual can result in
endangerment to persons, the
environment and the equipment
itself and will void any claims for
liability.

■

Keep this manual and the
refrigerant datasheet near the
unit.

■ The unit may 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.

■ 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 equipment

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

■ Equipment and components

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

■ The electrical voltage supply

is to be adapted to the
requirements of the equipment.

■ The operational safety

of equipment and components
is only assured if they are used
as intended and fully assembled.
Safety devices may 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
be free of foreign objects, fluids
or gases.

■ The equipment and components

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

■ Touching equipment parts can

result in burns or injury.

■ 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
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

are not to be exposed to any
mechanical stresses, extreme
levels of humidity or direct
sunlight.

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.

Disposal of equipment
and components

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

Warranty

In order to make warranty claims,
it s essential that the ordering
party or their representative
complete and return the "certificate
of warranty" and "commissioning
report" to REMKO GmbH &
Co. KG at the time when the
equipment was purchased and
commissioned. The warranty
conditions are detailed in the
"General terms and conditions".
Only the contractual parties can
strike special agreements beyond
these conditions. In this case, first
contact the contractual partner.

4

Transport and
Packaging

The equipment is shipped in sturdy
transport packaging. Immediately
check the equipment on delivery
and make note of any damage
or missing parts on the delivery
note and inform the forwarding
agent and your contractual partner.
No warranty can be assumed
for later claims.

Equipment description

The ATY 261-351 DC room air

conditioning units have a REMKO

ATY...AT outdoor component as

well as an ATY...IT indoor unit.

When in cooling mode,
the outdoor component serves
to release the heat extracted
by the indoor unit from the
room being cooled. In heating
operation, the heat absorbed
by the outdoor component
can be discharged through
the indoor unit into the room
being heated. In both operating
modes, the performance of the
compressor precisely adjusts itself
to the demand, thereby regulating
the nominal temperature with
minimal temperature variations.

This "inverter-technology"

results in energy savings over
conventional split systems and
also reduces noise emissions
to a particularly low level. The
outdoor component can be
installed outdoors or indoors.

The latter requires the fulfilment

of certain conditions. The indoor
unit is designed to be mounted
high up on indoor walls. Operation
takes place using an infrared
remote control.

The outdoor component consists

of a refrigerant circuit with
compressor, fin condenser,
condenser fan, reverse flow valve
and throttle element. The outdoor
component is controlled via the
controller of the indoor unit.

The indoor unit consists of a fin

vaporiser, vaporiser fan, regulation
system and condensation pan.

Floor consoles, wall consoles,
refrigerant pipes and condensation
pumps are available as accessories.

Schematic of outdoor refrigerant circuit

Reverse flow valve

Condenser fan

Condenser Filter dryer Flow regulator

Refrigerant circuit diagram for the indoor unit

Vaporiser

System configuration

Indoor area

Indoor unit

Electr. power supply line Control line

Condensation line

Outdoor area

Outdoor component

M

M

Capillary tube

Vaporiser fan

Injection line

Condensation line

Compressor

Connection valve
Suction line

Connection valve
Injection line

Connection to suction pipe

Connection to injection line

Suction line

Stop valve

Condenser fan

The connection between the indoor unit and the outdoor component is
made by way of the refrigerant lines.

5

REMKO ATY

Operation

The indoor unit is easily operated using the standard infrared remote control. 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.

Manual operation

The indoor unit can also be started
manually. To do so, press the
button on the right side of the unit
to activate the automatic mode.

In manual operation, the following
settings apply:

Automatic operation:
Above 21°C = cooling operation,
set temperature 24°C
under 21°C = heater operation,
set temperature 24°C
Fan speed AUTO

Press the button on the infra-red
remote control to interrupt manual
operation.

Display on indoor unit

The display illuminates according to the settings. In operation, the display
lights up, the selected mode and the nominal temperature are shown.

Display on indoor unit

Power

Unit turned on

Ion generator

switched on

Air circulation

mode set

SET

TURBO

C

Timer operation

Display

Display of

coded error

messages, room

and nominal
temperature

Fan speed

Stage 1, 2 and 3 and

Auto (blinking)

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
obstruct the transmission path.

First insert the batteries supplied
on delivery (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).

1 max. distance 6 m

max. 6 m

NOTE

Faults are indicated
by codes (see chapter
Troubleshooting and
customer service).

NOTE

Replace discharged batteries
immediately with a new set in
order to avoid risk of leakage.
It is recommended that the
batteries are removed if the
equipment is shut down for
longer periods.

6

Buttons on the remote control

3. Heating mode In this mode,

the warm air in the room
is warmed to the desired
temperature.

4

. Air circulation mode
In this mode, the air in the room
is recirculated.

"MIN."button

This button increases the

minute value for time and timer
programming.

Buttons on the remote control

"ON/OFF" Button

Press this button
to start the unit.

"  "button

This button is used to set

the desired temperature
between 18°C and 30°C.

"MODE"button

Use 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 cold air in the
room is cooled to the desired
temperature.

5

. Dehumidification mode
In this mode the room is mainly
dehumidified and the adjusted
temperature is maintained.

"FAN" button

Press this button to set the

desired fan speed. 4 speeds
are available: Automatic, high,
medium and low fan speed.

"(SLEEP)" button

After pressing this button,

the Sleep mode is activated
and in cooling operation, the
nominal temperature increases
automatically by 1 °C within
an hour, in heating operation,
the nominal temperature is
lowered by 1 °C within an
hour. After the second hour,
the temperature is increased/
lowered by 2°C. After 6 hours,
the function is switched off.

"(SWING)"button

This button directly activates

the oscillating function of the
fins for better air distribution
in the room.

"TIMER ON"button

This button is used to

activate the automatic on and/
or off time of the unit and
is programmed with buttons
and at intervals of 10
minutes.

"HR"button

This button increases the

hour value for time and timer
programming.

"CLOCK"button(recessed)

By pressing this button, the

time setting is activated.

"ION" button

By pressing this button, the ion

generator and turbo mode are
activated.

"TIMER OFF" button
This button serves to program

the automatic switch-off time
for the unit within the next 24
hours.

"RESET" button

(recessed)

This button resets the remote

control to its factory default
configuration.

7

REMKO ATY

Button functions

A symbol is shown on the display to indicate that the settings are being transferred.

ON/OFF Button

/ Button

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 ON/OFF

The remote control has its own temperature display. If buttons / are
pressed alternately, the display changes to . The button  can be used
to reduce the desired nominal temperature, the  button can be used
to increase it. This adjustment is only possible in coolingand heating
mode. In automatic mode, the fixed temperature of 24°C is preset.
The current setting is shown next to the temperature display.

In dehumidification mode, no temperature adjustment can be made.

MODE Button

 

Cooling /
mode



heating

Use the MODE button to select between the individual operating modes.
5 modes are available:

1. Automatic automatic selection of cooling or heating operation

2. Cooling predominantly summer operating mode

3. Dehumidification Summer or winter operating mode

4. Heating predominantly winter operating mode

5. Air circulation only for circulation of air

Automatic Cooling

MODE

Dehumidifying

MODE MODE MODE MODE

Heating

Air circulation

8

AUTOMATIC MODE

In automatic mode, the controller autonomously selects between heating
and cooling operation when the unit is first turned on. A nominal
temperature of 24 °C is preset.

Cooling MODE

MODE

AUTOMATIC

In cooling mode, the air in the room is cooled down to the set 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, the indoor unit starts to cool the air in the room.
The inverter controller checks the difference between the adjusted
nominal temperature and the actual room temperature. If there is a large
difference, the cooling output is very high. If the difference is smaller,
a lower cooling output is produced. 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 controller only turns the cooling on again after a waiting period
of 3 minutes.

MODE

COOLING OPERATION

Functional diagram

Nominal temperature

Nominal temperature -2°C

Compressor operation AT

Fan operation AT

Fan operation IT

Actual temperature

> 6 Min.

> 6 Min.> 3 Min.

30 sec. 30 sec.

Start cooling mode

Cooling mode

Stop cooling mode

Operation

Stop

9

REMKO ATY

Heating MODE

In the heating mode, you can heat the room in spring or fall. The desired
room temperature is set with 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. If the adjusted
room temperature is exceeded by approx. 0.5°C, then the controller
turns the heater function off. To protect the compressor, the controller
will not switch the heating on again until
it has waited for 3 minutes.

MODE MODE

HEATING
OPERATION

Functional diagram

Nominal temperature +5

Nominal temperature +2

Compressor operation AT

Fan operation AT

Fan operation IT

Reverse flow valve

Actual temperature

°C

°C

> 6 Min.

> 6 Min.> 3 Min.

30 sec. 30 sec.

30 sec. 30 sec.

Stop heating operation

Heating mode

Start heating mode

Operation

Stop

Air circulation MODE

During the defrosting cycle, the indoor unit vaporiser fan and
the outdoor unit condenser fan are switched off.
After the cycle is concluded, the fans are switched to their previous
settings.

Reverse flow valve

Compressor operation AT

Fan operation AT

Fan operation IT

Defrost period

30 sec.

< 7 Min.

15 sec.

30 sec.

60 sec.

30 sec.

3 Min.

Operation

Stop

In the air circulation 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. The fan has four speeds. Neither
the ion generator nor turbo mode can be selected in this mode.

MODE

AIR CIRCULATION

10

Dehumidification MODE

In dehumidification mode, the room temperature cannot be set. Due
to the low temperature of the refrigerant, the dew point of the air at the
condenser is undercut. The excess moisture in the air is condensed on the
condenser, the room is dehumidified. The fan has four speeds. Neither
the ion generator nor turbo mode can be selected in this mode.

FAN Button

MODE

DEHUMIFICATION
MODE

Functional diagram

Nominal temperature

Nominal temperature -2°C

Compressor operation AT

Fan operation AT

Fan operation IT

Actual temperature

Low fan speed

Start
Dehumidifying mode

Dehumidifying mode

Stop
Dehumidifying mode

30 sec.

Operation

Stop

The fan speed can be adjusted with this button. A selection can be made
between low, medium, high and automatic fan speed.

FANFANFAN FAN

CLOCK Button (recessed)

NOTE

The speed change is achieved with a phase control. When switching
between individual speeds, virtually no audible difference is
noticeable.

The time can be programmed by pressing the CLOCK button. The time
blinks in the display and the current time can be set using the HR. and
MIN. button. Programming is completed by pressing the CLOCK button,
the display will stop blinking.

CLOCK

HR./MIN.

CLOCK

11

REMKO ATY

SWING Button (covered)

SLEEP Button

The oscillating function of the air discharge fins can be adjusted with this
butto. This makes it possible to switch directly between a fixed position
and the oscillating function. The air distribution in the room is improved
using the swing function.

This button activates a programming function, which causes the
nominal temperature in 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 . In this
function, the fan is in automatic mode.

SLEEP

TIMER Button

Functional diagram

1st

hour

2nd

Nominal temperature +2

Nominal temperature +1°C

unit operation

Nominal temperature -1

Nominal temperature -2

°C

°C

°C

hour

1st hour 2nd hour 6th hour

6th

hour

Opera

Stop

tion

The turn on and turn off time can be programmed with this button.
By pressing the TIMER button several times, the turn on, the turn
off and the combined turn on and off timer is activated. The turn on
or turn off time blinks. The timer display on the indoor unit illuminates.
The desired turn on or turn off time is set by pressing the buttons HR.
and MIN. After completed adjustment, the timer symbol will continue
to blink for approximately 15 seconds. When the programmed time
has been reached, the unit automatically switches on or off. If the unit
is automatically switched on, the mode, temperature and fan speed for
the last setting are activated. The prior deletion of the on and off time
is made by pressing the corresponding timer button. The timer display
on the indoor unit goes out.

12

PROGRAMMINGTIMER ON

The controller turns the unit on after programming. During operation,
all settings can be seen on the display. Out of operation, only the timer
settings are visible.

PROGRAMMING TIMER OFF

PROGRAMMING TIMER ON/OFF

Timer on

HR/MIN

30 sec.

The controller turns the unit off after programming. During operation,
all settings can be seen on the display. Out of operation, only the timer
settings are visible.

Timer off HR/MIN 30 sec.

The controller turns the unit on or off after programming. In operation,
all settings are visible on the display. Out of operation, only the timer
settings are visible.

Unit On Unit Off

Example:

The controller turns on at 10:20.
The unit is in operation until 05:00.

13

REMKO ATY

INDOOR UNIT DISPLAY

SET

TURBO

C

By pressing the "ION" button several times, the "ION" function,
the "Turbo" function, or both can be set at the same time.

Ion function

The unit is equipped with an ion generator to generate negative ions.
A high concentration of negative ions is found for example in mountains,
near waterfalls and in forests and people perceive this inhaled air as
"clean". Only a slight ion concentration is found in interior rooms. In this
case, the ion generator can enhance the ions to the oxygen molecules
of the surrounding air and can increase the feeling of well-being. In
addition, atmospheric particles and dust particles in the air are bound,
naturally cleaning the air. Any dust can settle on smooth surfaced due
to the ionization and can be removed manually. Weekly cleaning of the
housing and the filter should be observed when using the ionization
feature. The function is available in all operating modes.

Turbo function

With this button, the air volume flow in cooling and heating operation
is increased for 30 minutes. This makes it possible to cool off or warm
up a room quicker. The ventilation and dehumidification mode cannot
be obtained, the system changes to automatic mode.

After 30 minutes, the controller returns to the last programmed settings.

SET

TURBO

C

14

Shutdown

Care and maintenance

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

Permanent
Shutdown

Ensure that equipment and
components are disposed
of in accordance with local
regulations, e.g. using certified
firms 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
near you.

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

CAUTION

Prior to performing any work,
ensure the equipment is
disconnected from the voltage
supply and secured to prevent
accidental switch-on!

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 solvent­based cleaning products. Do
not use a jet of water.

■

Before an extended shut down
period, clean the fins on the
outdoor unit and cover the
outdoor unit with plastic to
avoid infiltration of dirt into
the unit.

Maintenance

■

We recommend concluding
a maintenance contract
with annual service from an
appropriate specialty company.

NOTE

This ensures the operational
reliability of your system!

NOTE

Statutory regulations require
an annual leak test for the
refrigerant circuit in relation to
the refrigerant filling capacity.
Inspection and documentation
is to be carried out by
specialty technicians.

Cleaning the housing
of the indoor unit

1. Disconnect the supply voltage
to the equipment.

2. Clean the unit with a soft damp
cloth.

3.

Switch the supply voltage back on.

CAUTION

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

Air filter for indoor unit

Clean the air filter at intervals of
no more than 2 weeks. Reduce this
interval in case of heavily soiled air.

Cleaning the filter on
the indoor unit

The indoor unit is equipped with
a filter with antibacterial coating.
The filter cleans the air of dust and
thereby reduces the distribution of
bacteria.

15

REMKO ATY

1. Switch the indoor unit via the
remote control to air circulation
(the front cover of the air inlet
must be open!) (Figure 2).

Type of task

Checks/Maintenance/Inspections

2. Open the lower display cover
on the front side of the unit
by pressing both latches
and carefully fold the cover
downward and remove it from
the bracket (figure 3).

3. Push the clips on the filter up
and pull it out on the clips
(figure 4).

4. Clean the filter with a standard
vacuum cleaner. Turn the dirty
side upward (figure 5).

5. Carefully clean off any dirt in
lukewarm water and with mild
cleaner. Turn the dirty side
downwards (figure 6).

6. If water is used, let the filter dry
out air before replacing it in the
unit.

General

Measure voltage and current

Check function of compressor

Check fan function

Contamination of evaporator fins

Check refrigerant fill quantity

Check condensation drain

Test insulation

Check moving parts

Sealing test for refrigerant circuit

1) see note S.15

2 Open front cover

Commissioning

Monthly

Six-monthly

Yearly

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

Cleaning the condensation
pump (accessories)

An optional integrated or separate
condensation pump may be included
with the indoor unit, which pumps
out any accumulated condensation
into higher positioned drains.
Observe the care and maintenance
instructions given in the separate
operating instruction manual.

1)

7. Carefully insert the filter. Make
sure it is seated correctly.

8. Close the display cover as
described above but in reverse
order.

9. Set the desired operating mode.

4 Pull out the filter

5 Cleaning using a vacuum cleaner 3 Remove the display cover

6

Cleaning with lukewarm water

16

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

Fault Possible cause Checks Remedial measures

The unit does not start
or switches itself off
continually.

The unit does not respond
to the remote control

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

Power line damaged.

Waiting time after turn on too
short.

Operating temperature fallen
below / exceeded.

Power surge due to thunderstorm.

Problem of external condensation
pump.

Transmission distance too large /
receiving problem.

Remote control is defective.

Receiver and transmitter are
exposed to too much sun exposure.

Electromagnetic fields disrupt the
transmission.

Button of remote control stuck /
dual button control.

Are all other electrical installations
functioning correctly?

Are all other electrical installations
functioning correctly?

Have approx. 5 minutes
elapsed since the restart?

Are the fans in the indoor unit
and outdoor component working
correctly?

Have there been lightning strikes
in the area recently?

Did the pump shut down due to
a fault?

Does the indoor unit beep when
pressing a button?

Is the unit running in manual
mode?

Does it function correctly in the
shade?

Does it function after removing
potential fault sources?

Does the "Send” symbol appear
on the display?

Check voltage if necessary wait
until turned on again.

Repair by a certified service centre.

Schedule longer waiting periods.

Observe temperature ranges of
indoor unit and outdoor unit.

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

Check or clean the pump, if
necessary.

Reduce the distance to less than
6 m and change location.

Replace remote control.

Shade the transmitter and receiver.

Signal is not transmitted when
interference sources are operational.

Release the button / press only
one button.

The unit is running with
reduced or without
cooling output.

Condensation discharge
on unit.

Batteries of remote control are
discharged.

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

Windows and doors open.
Heating/cooling loads increased.

No cooling operation is set.

Fins of the outdoor unit are
blocked by foreign matter.

Leaks in refrigerant circuit.

Drain pipe of collector reservoir
plugged / damaged.

External condensation pump or
floater defective.

Non-discharged condensation is in
the condensation line.

Condensation cannot be
discharged.

Have new batteries been inserted?
Is the display incomplete?

Have the filters been cleaned? Clean filters.

Have there been any
constructional / application­related changes?

Is the cooling symbol activated
in the display?

Is the fan on the outdoor component
running outdoor component. Are the
evaporator fins clear?

Is frost formation visible on connections
of the outdoor unit?

Is unrestricted condensation discharge
ensured?

Is the collection tray full of water
and the pump not running?

Has the condensation pipe been
laid on a slope and is not blocked?

Are the condensation lines
unblocked and laid on a slope? Are
the condensation pump and float
switch functioning correctly?

Insert new batteries.

Close windows and doors / install
additional systems.

Correct the settings for the unit .

Check fan or winter regulation,
reduce air resistance.

Repair by certified service centre.

Cleaning of drain pipe and
collector reservoir.

Have pump replaced by certified
service centre.

Route the condensation line
downward or clean it.

The condensation line must have
a fall. If necessary, clean the pipe.
A faulty condensation pump and
float switch should be replaced.

17

REMKO ATY

Problem display by blinker code

LED in AT

No.

No.

Display

16

red

yellow

ER01 flashes - - -

ER02 flashes - - -

ER03 flashes - - -

ER04 flashes - - -

ER05 flashes - - -

ER06 flashes - - -

ER07 flashes - - -

ER08 flashes

ER09 flashes

ER10 flashes

ER11 flashes

ER12 flashes

ER13 flashes

ER14 flashes

ER15 flashes

ER16 flashes

ER18 flashes

ER19 flashes

ER20 flashes

O • •

• O •

O O •

O • O

• O O

× • •

• • ×

O • ×

× O •

× O O

× × ×

× × •

17

No.

Fault description Checks Remedial measures

18

green

Air circulation sensor on
indoor unit is defective /
triggered
Indoor unit power supply
defective

Frost protection sensor on
indoor unit faulty/tripped

Vaporiser fan motor speed
too low / defective

EEPROM indoor unit control
board error

Communication error
between IT and AT

Refrigerant fill quantity
incorrect

AT condenser sensor faulty /
tripped

Communication error
between IT and AT

Compressor speed too low

Over-current error

PFC error

Inverter-control board
communication error

Inverter board safety shut-off

Indoor unit outdoor air sensor
defective

Compressor temperature too
high

EEPROM Outdoor unit
control board error

Compressor start error

Outdoor unit system error

Check resistance (see p. 19) Replace defective sensor

Check power supply Repair power supply

Check resistance (see p. 19) Replace defective sensor

Check fan motor, fan blade Replace motor or blade

Check refrigerant pressure.

Check resistance (see p. 19) Replace defective sensor

Check wiring and connections

Check cable connections, pipe connections,
shut-off valves, compressor

Check voltage, cable connections,
refrigerant pressure, ambient conditions

Check cable connections, pipe connections,
shut-off valves, compressor

Check cable connections, pipe connections,
shut-off valves, compressor

Check cable connections, pipe connections,
shut-off valves, compressor

Check resistance (see p. 19) Replace defective sensor

Check condenser for dirt, check refrigerant
pressure Check fan

Check cable connections, pipe connections,
shut-off valves, compressor

HL

OT

OP

OD

OH

• × ×

O × •

× × O

× • O

× O ×

O × ×

Incorrect setting type for unit Contact specialist firm

Power supply fault

Ambient temperature too
high

Liquid temperature too high

Hot gas temperature too high

Inverter board overheat

• = Off O = On × = flashes

18

Check voltage, cable connections,
refrigerant pressure, ambient conditions

Switch unit off, switch unit back on when
ambient temperature is lower

Check condenser for dirt, check refrigerant
pressure Check fan

Check condenser for dirt, check refrigerant
pressure Check fan

Controller, safety controller and resistance

Hot gas sensor, IPM AT sensor

Temp.

0 160.73 kΩ

5 125.57 kΩ

10 98.78 kΩ

15 78.23 kΩ

20 62.35 kΩ

25 50.00 kΩ

30 40.33 kΩ

Resistance

AT condenser sensor, AT ambient temperature sensor
IT vaporiser sensor, IT circulation sensor

Temp.

0 27.42 kΩ

5 22.15kΩ

10 18.00 kΩ

15 14.72 kΩ

20 12.10 kΩ

25 10.00 kΩ

30 8.31 kΩ

Resistance

AT compressor

Temp.

Resistance

20 0.71 Ω

Measuring

point

U-V
V-W
U-W

Compressor control by via gas temperature Compressor control via vaporiser temperature

Hot gas tempera-

ture

< 87°C

93°C - 97°C no change to frequency

97°C - 110°C

> 110°C

Normal operating condition

decrease in frequency 1Hz/3sec.

Controller

control via IT

Switch off compressor

IT surface tempera-

ture

> 6°C

< 6°C no change to frequency

< 4°C decrease in frequency 1Hz/3sec.

< 1°C Switch off compressor

Cooling regulation

Normal operating condition

control via IT

Compressor control via ambient temperature

Ambient temperature

> 53°C Frequency 32Hz

47°C - 53°C Frequency 50 Hz

39°C - 47°C Frequency 70Hz.

15°C - 39°C

< 15°C Frequency 32Hz

Cooling mode regulation

Normal operating condition

control via IT

Compressor control via ambient temperature

Ambient temperature

> 23°C Frequency 32Hz

19°C - 23°C Frequency 50 Hz

12°C - 19°C Frequency 70Hz.

< 12°C

<-25°C or >+70°C Switch off compressor

Heating mode regulation

Normal operating condition

control via IT

Compressor control via vaporiser temperature

IT surface tempera-

ture

< 51°C

51°C - 55°C no change to frequency

55°C - 65°C decrease in frequency 1Hz/3sec.

> 65°C Switch off compressor

Heating regulation

Normal operating condition

control via IT

Compressor control via power consumption

Power consumption

> 6.1 A no change to frequency

6.2 - 6.7A decrease in frequency 1Hz/3sec.

6,7-7,5 Switch off compressor

Cooling / heating regulation

19

REMKO ATY

Installation instructions for qualified personnel

Important notes prior to
installation

NOTE

The assembly and installation
of the units and components
may only be carried out by
especially trained technicians.

■

Transport the unit in its original
packaging as close as possible
to the installation location.
You avoid transport damages
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.

■

Lift the unit at the corners
and not by the refrigerant or
condensation connections.

■

The refrigerant pipes
(injection and suction line),
valves and connections must
be insulated against vapour
diffusion. If necessary, also
insulate the condensation pipe.

■

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

devices with intensive thermal
radiation. Installation near
sources of thermal radiation
reduces the output of the unit.

■

Only open the shut-off valves
of the refrigerant lines after
the installation is complete.

■

Before connecting the injection
line, remove the valve core
in the indoor unit connection
ports.

■

Seal off open refrigerant lines
with suitable caps or adhesive
strips to avoid infiltration of
moisture and never kink or
compress the refrigerant lines.

■

Avoid unnecessary bends.
In doing so, you minimise loss
of pressure in the refrigerant
lines and ensure clear return
flow of the compressor oil.

■

Take special precautions with
regard to the oil return if the
exterior component is located
above the indoor unit. (See
section "Oil return flow
measures").

■

If the basic length of the
refrigerant line exceeds
5 metres, add refrigerant.
The quantity of additional
refrigerant is provided in
the chapter "Add refrigerant".

■

Only use the union nuts for the
refrigerant pipes included in the
delivery, and remove them only
shortly before connecting the
refrigerant lines.

■

Make electrical connections
in accordance with the effective
DIN and VDE standards.

■

Always fasten electric cables
properly to the electrical
terminals. Otherwise a fire
could result.

■

Do not install the unit in
the immediate vicinity of

20

Wall openings

Selection of the installation location

Wind

■ 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 opening is padded or
lined, e.g. using a PVC pipe,
to prevent the lines being
damaged.

■ After installation, the wall

opening should be closed off
with a suitable sealant. Do not
use materials containing cement
or lime!

Lines in the wall throughput

Control line

The indoor unit is designed for
horizontal wall installation in the
upper wall area (at least 1.75
m from the upper edge - floor).
However, it can also be used in the
upperwall area above doors.

The outdoor component is
designed for horizontal installation
on a base in outdoor areas. It
should be placed on level, flat and
firm surface. The unit should also
be secured to prevent toppling.
The outdoor unit 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.

Rain

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.

Windbreak

Wind

PVC tube

Suction line

Condensation line

Injection line

Installation material

The indoor unit is attached with
4 screws on the building side,
through the back wall of the unit.

The outdoor unit is attached with
4 screws via a wall bracket on
the wall or a floor bracket on the
ground.

NOTE

Install the outdoor unit
with appropriate anchors,
depending on the type of wall.

The unit should be at least 10 cm
off the ground when mounted on
the roof or ground. A pedestal is
available as an accessory.

Sun

The evaporator fins (condenser)
of the outdoor unit are the
heat discharge components in
cooling operation. Exposure to
direct sunlight further increases
the temperature of the fins and
so reduces the heat released by
the finned heat exchanger. The
outdoor component should be
installed on to the north side of
the building whenever possible.
If necessary, take measures
to provide sufficient shade
(responsibility of customer).
This could be a small roof.
However, the discharging warm air
flow may not be affected by the
measures.

Snow

The unit should be wall-mounted
in areas of heavy snowfall.

Installation should then 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.

Minimum clearance to snow

Snow

20 cm

21

REMKO ATY

Installation inside buildings

■

Ensure that heat can dissipate
adequately when placing the
outdoor component in cellars,
attics, adjoining rooms or halls
(figure 7).

■

Install an additional fan with
a rated flow comparative to
that of the outdoor component
being installed in the room.
This is used in conjunction with
ventilation ducts to compensate
any pressure losses (figure 7)

NOTE

■

Ensure a continuous and
unobstructed air flow from
outside, preferably using
sufficiently large air intakes
placed opposite each other
(figure 7).

7 Installation inside buildings

Warm air

Additional
fan

Light
well

Warm air

■

Comply with any regulations
and conditions affecting the
structure of the building.
If necessary, fit acoustic
installation.

Outdoor component

Cold
Fresh air

Light

well

In heating mode, condensation
formation may occur due to
cold surfaces.

Minimum clearances

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

Minimum clearances

1000

300

1000

1000

1000

Air intake

D

A

E

C

Air
discharge

B

22

ATY 261 DC AT ATY 351 DC AT

A 100 mm 100 mm

B 700 mm 700 mm

C 400 mm 400 mm

D 100 mm 100 mm

E 300 mm 300 mm

Installation

Oil return measures

If the outdoor unit is installed at
a higher level than the indoor unit,
we recommend that suitable oil
return measures are taken. Usually
an oil pump bend is installed
for every 2.5 metres of height
difference.

Oil return measures

Outdoor component

Oil pump bend

in suction pipe to
outdoor component
1 x every 2.5 metres

of rise in the line

max. 5 m

NOTE

Installation may only be
performed by authorised
specialists.

Unit installation

When attaching the indoor unit,
pay attention to the lower, upper
and side area air discharge.

1. Use the dimensions of the
unit to mark the fixing points
on structural parts approved
to support the static load.

2. Open the display cover(figure 8)
and remove the two screws from
underneath the filter (figure 9).

8

Open display cover

9

Remove screws

Radius:
50 mm

Outdoor component

Connection variations
of indoor unit

Connection variations

1

2

1 Outlet on the wall, right
2 Outlet through the wall, right
3 Outlet through the wall, left
4 Outlet on the wall, left

View from the rear

3. Remove the front of the unit
by lifting the front in the lower
area from the body approx.
10 cm and folding it upward
(figure 10).

4. Pull the plugs of the front cover
from the circuit board (figure 11).

5. Remove the housing's break
out opening if necessary.

6. nstall the unit on the wall.
Ensure undistorted installation.

7. Connect the refrigerant

4

3

lines, electrical cables and
condensation line to the indoor
unit as described below.

8. Check that the unit is level.

9. Re-assemble the unit.

10

R

elease unit front

11

Remove the plug

Installation of the indoor unit

The wall bracket for the unit must
be attached with suitable screws
and anchors.

23

REMKO ATY

Connecting the
refrigerant lines

The on-site connection of the
refrigerant lines is undertaken
inside the unit.

It may be necessary to fit a reducer
or flared adapter to the indoor
unit. These fittings are included
with the indoor unit as an
accessory kit. Once installed, the
connections should be sealed to
prevent vapour diffusion.

CAUTION

The units are factory filled with
dry nitrogen to check for leaks.
The pressurised nitrogen is
released when the union nuts
are loosened.

The following instructions describe
the installation of the refrigerant
circuit and the assembly of the indoor
unit and the outdoor component.

1.

Check the "Technical Data"

chart for the required pipe
diameters and connect the
refrigerant line.

2. To bend the copper tubing, use
the appropriate bending tool to
prevent kinks in the tubing.

3. Observe the permitted bending
radius for the refrigerant pipes
during installation. Never bend
a pipe twice in the same place.
Brittleness and cracking can
result.

4. Lay the refrigerant lines from
the indoor unit to the outdoor
component. Ensure that the
fastenings are adequate and if
necessary, take appropriate oil
return measures!

5. Use the wall or floor brackets
to fit the outdoor component
against structural parts
approved to support the static
load (refer to the installation
instructions for the brackets).

6. Ensure that structure-borne
sound is not transferred to parts
of the building. Use vibration
dampers to reduce the effects
of structure-borne sound!

7. Remove the factory-fitted
protective caps and the union
nuts from the blocking valve
connections and use them for
further installation.

8. Before flanging the refrigerant
lines, ensure that the union nut
is on the pipe.

9. Prepare the refrigerant lines as
shown below
(figure 12+13, page 23).

10.

Check if the flange has the

correct shape
(figure 14, page 23).

11 Before connecting the injection

line, remove the valve core
in the indoor unit connection
ports.

12.

First connect and hand-tighten
the refrigerant connections
to ensure they are correctly
seated.

13.

Now fully tighten the fittings
using 2 suitably sized open­ended spanners.
Use one spanner to counter
the force when tightening the
fitting (figure 15, page 23).

14.

Apply appropriate heat
insulation to both installed
refrigerant lines, including
connector.

15.

Only use insulating hoses
suitable and diffusion-safe or
the temperature range.

NOTE

Use only tools which are
approved for use in an HVAC
environment. Pipe cutter,
deburrer, bending pliers and
flanging tool.

Supplementary information
for Installation

■

When combining the outdoor
component with some indoor
units, the connection of the
refrigerant pipes may differ.
In that case, install the provided
reducer or expansion fittings to
the indoor unit.

■

If the basic length of the
refrigerant line exceeds
5 m, add refrigerant when
commissioning the system for
the first time. (See chapter
"Add refrigerant").

24

Monitoring for leaks

12 Deburring the refrigerant line

Refrigerant line

Deburrer

13 Flanging the refrigerant line

Flanging tool

14 Correct flange shape

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

red = small valve
= injection pressure

blue = large valve
= suction pressure

After completed connection, the
leakage test is carried out with dry
nitrogen.

CAUTION

Before the leakage test, the
pipe connections must be
checked.

The tightness test involves
spraying a leak detection spray
onto the connections. If bubbles
are visible, the connections have
not been properly made. Tighten
the connection or prepare a new
flange.

The time required to generate
the vacuum is dependent on
the pipework volume of the
indoor unit and the length of the
refrigerant lines. The process will
always take at least 60 minutes.
Once any foreign gases and
moisture have been completely
extracted from the system, the
valves on the pressure gauge
station will be closed and the
valves on the outdoor component
will be opened as described in the
chapter on "Commissioning".

15 Tighten fittings

Tighten 1st Spanner

Counter
2nd Spanner

Tightening
torque:

“

12 - 16 Nm

“

28 - 32 Nm

“

40 - 44 Nm

“

64 - 68 Nm

After successful leakage test, the
excess pressure in the refrigerant
lines is removed and a vacuum
pump with the absolute final
partial pressure of min. 0.01 mbar
is used to remove all the air and
empty the lines. Any moisture
present in the pipes will also be
removed.

NOTE

A vacuum of min. 0.05 mbar
must be created!

25

REMKO ATY

Condensate drain

Due to the dew point shortfall
on the vaporiser, condensation is
created on the indoor unit during
the cooling operation and on the
outdoor unit during the heating
operation.

Below the vaporiser is a collection
tray, which must be connected to
a drain.

■

The condensation line is to
be installed with a minimum
slope of 2 %. (figure 11).
If necessary, fit vapour diffusion
tight insulation.

■

Lead the condensation line
freely to the run-off line. If
the condensation runs directly
into a sewer pipe, fit a trap to
prevent any unpleasant odours.

■

When operating the unit at
outdoor temperatures below
0°C, ensure the condensation
pipe is laid to protect it
against frost. If necessary, fit
supplementary pipe heating.

■

After completed installation,
check for unobstructed
condensation run off and
ensure that a permanent seal
is provided.

The condensation hose is designed
to be installed on the right and the
left side (view from front). Remove
the plug at the corresponding
connection.

Indoor unit condensation connection

50

65

40

45

Condensate drain
right or left

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.

■

We recommend installing a
main / repair switch on the
building near to the indoor unit.

■

Power is supplied to the
indoor unit, the outdoor unit
is supplied via a control line
from the indoor unit.

■

The terminal blocks for making
the connections are located
behind the cover on the
outdoor component.

■

If an optionally available
condensation pump is used
on the unit, then an additional
relay for the shut-off contact
of the pump will be needed to
increase the switching power
to shut off the compressor.

■

Control cables should be
screened if laid in areas exposed
to strong magnetic fields.

16

Slope of the condensation line

26

at least
2% fall

Condensation connection - outdoor component

Opening for
Condensate drain

Condensation tray
for the outdoor unit.

NOTE

A condensation pump cannot
be installed within the units.

■

Electrical protection is provided
in accordance with the technical
data.

CAUTION

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

Connecting the indoor unit Figure 17

Connecting the outdoor
component

Proceed as follows to connect the
cable:

1. Remove the cover from the
unit.

2. Remove the side panel next to
the terminals.

Terminal bar /
control bar

Mains cable

Before connecting the refrigerant
piping, the valve core must be
removed from the injection line.

3. Feed the cables through the
ferrite core supplied in the
delivery (figure 17+18).

4. Feed the cable through the
edge protection ring of the
fixed connection plate.

5. Connect the cable as shown
on the electrical connection
diagram.

6. Anchor the cable in the strain
relief and re-assemble the unit.

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

Figure 18

Connecting the indoor unit

Make the connection as follows:

1. Remove the front of the unit,
as described in chapter "Unit
installation" .

2. Select the cable cross-section
according to the relevant
standards.

Electrical connection diagram

ATY 261 DC / ATY 351 DC

Outdoor

component

Exterior conductor

A

B

Neutral conductor

C

Control conductor

D

PE

Earth conductor

the indoor unit

Exterior conductor

L

1N

Earth conductor

PE

1

2

3

4

PE

Mains cable

L1

N

PE

230 V~,
50 Hz,
L1 / N
/ PE

3. Connect the unit to the mains
cable and control cable on the
outdoor component.
(See electrical connection
diagram).

4. Re-assemble the unit.

27

U

V

W

U

V

W

REMKO ATY

Electrical circuit diagram

ATY 261 DC AT / ATY 351 DC AT

■

Check the refrigerant lines and
insulation for damage.

L in

W

U

Compressor

W
VV
U

A = Reverse flow valve
B = Condenser fan

IPM

Sensor

IPM inverter power drive

N out
P out

A

B

J1

P
N

ATY 261 DC IT / ATY 351 DC IT

Swing motors

Lift motors

L
N

N
L
C

J4

N out
P out
P

N

Vaporiser
fan

J2

J1

N-Out

L-Out

Control board

E

COMM
AC N In
AC L In

Condenser

Ion generator

LDC

Pe

D

S

C

N

B

L

A

Terminal strip

Outdoor

component

Condenser

Test

Air-intake sensor

Condenser sensor

Hot gas sensor

AC N

AC L

4
3
2
1

Terminal strip

the indoor

unit

■

Check the electrical connection
between the indoor unit and
the outdoor unit for correct
polarity.

■

Check that all fastenings,
mountings etc. are firm and
at the correct level.

Add refrigerant

CAUTION

Wear protective clothing when
handling refrigerant.

Display

Air circulation sensor

Antifreeze sensor

Before commissioning

After successful leakage test, the
vacuum pump must be connected
using the pressure gauge station
to the valve connections of
the outdoor unit (see chapter
"Leakage test") to create
a vacuum.

Perform the following checks
prior to commissioning the
unit for the first time and after

Display

Pe

Mains cable

N

230/1Ph/50Hz

L

Button

manual operation

any interventions affecting the
refrigerant circuit. Record the
results in the commissioning
report:

■

Check all refrigerant lines and
valves with leak detection spray
or soapy water for leaks and for
inadvertent mix up of suction
and injection line. Perform this
check when the unit is not
running.

The equipment contains a
basic quantity of refrigerant.
Furthermore, for refrigerant line
lengths of more than 5 metres
per circuit, an additional amount
of refrigerant must be added,

Control line

in accordance with the following
chart:

ATY 261 DC
ATY 351 DC

Basic
line length

Additional fill quantity

Up to and
incl.

0 g/m

5 m
5 m to
max. 15 m

20 g/m

NOTE

Ensure that the refrigerant in
use is always replenished in
liquid form!

28

Commissioning

NOTE

Commissioning is only to be
performed and documented
by specially trained personnel.

Once all the components have
been connected and tested, the
system can be commissioned
. A functional check should be
performed to verify its correct
function and identify any unusual
operational behaviour prior to
handing it over to the operator.

Function test and
test run

Check the following points:

■

Leak tightness of refrigerant
lines.

■

Compressor and fan running
smoothly.

Function test of Cooling
operating mode

1. Remove the caps
from the valves.

2. Begin the commissioning
process by briefly opening the
shut-off valves of the external
unit until the manometer
displays a pressure of approx.
2 bar.

3. Use leak detection spray or
suitable devices to check that all
the connections are tight.

4. If no leaks are found, open
the stop valves by turning them
anti-clockwise as far as they will
turn using a hexagon spanner.
If leaks are found, draw off
the refrigerant and rework
the defective connection. It is
imperative that the vacuum
creation and drying steps are
repeated!

5. Switch on the mains switch
or circuit breaker.

9. Check the correct function
of the condensation line by
pouring distilled water into the
condensation tray.
A bottle with a spout is
recommended for pouring the
water into the condensation
tray.

10.

Switch the indoor unit to
cooling mode.

NOTE

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

11.

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

12.

Check the control system
in the indoor unit using the
functions described in the
operating manual.
(Timer, temperature settings
and all mode settings).

■

In cooling mode, cold air
output by the indoor unit, and
warm air output by the outdoor
component.

■

Functional test of the indoor
unit and all program sequences.

■

Check of the surface
temperature of the suction
pipe and determination of
vaporiser overheating. To
measure the temperature, hold
the thermometer to the suction
pipe and subtract the boiling
point temperature reading on
the pressure gauge from the
measured temperature.

■

Documentation of the
measured temperatures in the
commissioning report.

6. Use the remote control to
switch on the unit and select
the cooling mode, maximum
fan speed and lowest nominal
temperature.

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

8. Check the control system
for the unit using the
functions described in the
chapter "Operation". Timer,
temperature setting, fan speeds
and switching to circulating or
dehumidifying mode.

13.

Check the overheating,
outdoor, indoor, outlet and
vaporisation temperatures and
record the measured values
in the commissioning report.

14.

Remove the pressure gauge
and fit the sealing caps.

NOTE

Then, check the blocking
valves for leaks.

Final tasks

■

Reassemble all disassembled
parts.

■

Familiarise the operator with
the system.

29

REMKO ATY

Unit dimensions

ATY 261 DC AT / ATY 351 DC AT

623

265

ATY 261 DC IT / ATY 351 DC IT

148

720

567

245

532

All values in mm

470

567

47

45

396

25

All values in mm

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

30

495

Technical data

Series ATY 261 DC ATY 351 DC

Operational mode Inverter-wall room air conditioner combination for cooling and heating

Nominal cooling output

Nominal heating output

Energy efficiency class, cooling EER

Energy efficiency class, heating COP

Energy efficiency ratio EER

Coefficient of performance COP

Power consumption, annual, (500h) K / H kWh 365 495

Operating range (room volume), approx. m³ 80 110

Refrigerant R 410A

Operating pressure, max. per cooling circuit kPa 3800/1200 3800/1200

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

Nom. electrical power consumption, cooling

Nom. electrical power consumption, heating

Elec. nominal power consumption cooling

Elec. nominal power consumption heating

Elec. starting current, max. A 20 25

Refrigerant connection - injection line

Coolant connection - suction line

Data specific to indoor unit

Operating range °C/ %r.F +16 to +32 / 80% +16 to +32 / 80%

Adjustment range - Cooling °C +18 to +30 +18 to +30

Adjustment range - Heating °C +16 to +28 +16 to +28

Air flow volume per speed setting m³/h 360/390/420 380/410/440

Protection class IP X0 X0

Sound pressure level per speed setting

Dimensions - height mm 567 567

Width mm 567 567

Depth mm 148 148

Weight kg 12,0 12,0

Corresponding outdoor component

Operating range - cooling °C +15 to +45 +15 to +45

Operating range - heating °C -7 to +24 -7 to +24

Air volume flow, max. K/H m³/h 1340 1890

Protection class IP X4 X4

Sound pressure level, max.

Refrigerant, basic quantity

Refrigerant, additional quantity > 5 m g/m 20 20

Refrigerant line, max. length m 15 15

Refrigerant line, max. height m 5 5

Dimensions - height mm 532 532

Width mm 720 720

Depth mm 245 245

Weight kg 37,0 38,0

Serial number 937... 938...
EDP no. 1624261 1624351

1) Air inlet temperature TK 27°C / FK 19°C, outdoor temperature TK 35°C, FK 24°C, max. air flow volume, 5m line length, according to DIN EN14511

2) Air inlet temperature TK 20°C, outdoor temperature TK 7°C / FK 6°C, max. air flow volume, 5m line length, according to DIN EN14511

3) Distance 1 m free field

4) Contains greenhouse gas according to Kyoto protocol

1)

2)

1)

2)

1)

2)

kW 2,69 (1,00-2,93) 3,52 (1,2-3,87)

kW 2,93 (1,00-3,20) 3,87 (1,20-4,10)

A A

A B

3,68 3,56

3,64 3,49

4)

1)

kW 0,75 0,99

2)

kW 0,81 1,11

1)

A 3,48 4,62

2)

A 4,00 5,21

Inches (mm)

Inches (mm)

1/4 (6,35) 1/4 (6,35)

3/8 (9,52) 1/2 (12,7)

R 410A

4)

ATY 261 DC IT ATY 351 DC IT

3)

dB(A) 33/36/40 35/37/41

ATY 261 DC AT ATY 351 DC AT

3)

4)

dB(A) 45 49

kg 410 A / 0.63 410 A / 0.83

31

REMKO ATY

Exploded view ATY 261 DC IT / ATY 351 DC IT

3

17

15

1

5

7

14

6

7

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

13

5

14

8

7

4

11

10

2

12

Spare parts list

No. Designation ATY 261 DC IT ATY 351 DC IT

1 Cover - air inlet 1107400 1107400

2 Cover - display 1107401 1107401

3 Air filter 1107402 1107402

4 Display board 1107470 1107470

5 Lift motor, set 1107404 1107404

6 Swing motor 1107405 1107405

7 Air outlet fins, set 1107406 1107406

8 Condensation tray 1107439 1107439

9 Fin vaporiser 1107409 1107486

10 Fan wheel, vaporiser 1107410 1107410

11 Fan motor, vaporiser 1107471 1107471

12 Control board 1107472 1107473

13 Ion generator 1107415 1107415

14 Housing angle, set (right & left) 1107416 1107416

15 Mounting clip - cover, set 1107417 1107417

16 Antifreeze sensor / air circulation sensor 1107418 1107418

17 IR remote control 1107474 1107474

16

9

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

32

Exploded view ATY 261 DC AT / ATY 351 DC AT

14

1

9

4

15

16

6

13

10

11

12

5

8
7

3

14

14

2

We reserve the right to modify

the dimensions and constructional design as part of the ongoing technical development process.

Spare parts list

No. Designation ATY 261 DC AT ATY 351 DC AT

1 Front panel 1107421 1107421

2 Fan blade, condenser 1107422 1107422

3 Fan motor, condenser 1107449 1107424

4 Ribbed condenser 1107444 1107426

5 Side panel, right 1107475 1107475

6 Compressor, cpl. 1107476 1107477

7 Stop valve, suction line 1107434 1107435

8 Stop valve, injection line 1107436 1107436

9 Side section, left 1107438 1107438

10 Reverse flow valve 1107437 1107437

11 Reverse flow valve coil 1107478 1107478

12 Control board 1107479 1107480

13 IPM inverter power drive 1107481 1107482

14 Hot gas, condenser, air-intake sensor set 1107483 1107483

15 Compressor sensor 1107484 1107484

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

33

REMKO ATY

34

Notes

35

REMKO ACROSS EUROPE

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

REMKO GmbH & Co. KG

Air conditioning and heating technology

Im Seelenkamp 12 · 32791 Lage

PO Box 1827 · 32777 Lage

Telephone [phone]

Telefax [phone]

E-mail [e-mail]

Website 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 in terms

of technical knowledge. This has

given us the reputation of being

more than just an excellent,

reliable supplier:

REMKO, a partner helping you

find solutions to your problems.

Distribution

REMKO offers not just a well

established sales network both

nationally and internationally,

but also has exceptionally highly

qualified sales specialists.

REMKO field staff are more than

just sales representatives: they

must primarily act as advisers

in air conditioning and heating

technology for our customers.

SFlbCustomer service

Our equipment operates

precisely and reliably. However,

in the event of a fault, REMKO

customer service is quickly at

the scene. Our comprehensive

network of experienced dealers

always guarantees quick and

reliable service.

Subject to technical modifications, no liability assumed!