9 Commissioning
Installation manual
10
CTXM15+FTXM20~42+ATXM20~35R2/5V1B +
FTXM50~71R2V1B + ATXM50R2V1B
Daikin room air conditioner
3P482320-11R – 2020.06
3 For class 50~71 re-install the lower flap (horizontal blade).
Connect the 2 centre connection points. Hook the right side of
the blade to the shaft. Hook the blade on its left side.
4 Install the air filter, mount the front panel and close it.
8.4.2 To close the service cover
1 Place the service cover to its original place on the unit.
2 Install 1 screw back on the service cover.
8.4.3 To re-install the front panel
1 Attach the front panel. Align the shafts with the slots and push
them all the way in.
2 Close the front panel slowly; press at both sides and at the
centre.
9 Commissioning
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
9.1 Checklist before commissioning
After the installation of the unit, first check the items listed below.
Once all checks are fulfilled, the unit must be closed. Power-up the
unit after it is closed.
You read the complete installation instructions, as
described in the installer reference guide.
The indoor units are properly mounted.
The outdoor unit is properly mounted.
Air inlet/outlet
Check that the air inlet and outlet of the unit is NOT
obstructed by paper sheets, cardboard, or any other
material.
There are NO missing phases or reversed phases.
The refrigerant pipes (gas and liquid) are thermally
insulated.
Drainage
Make sure drainage flows smoothly.
Possible consequence: Condensate water might drip.
The system is properly earthed and the earth terminals
are tightened.
The fuses or locally installed protection devices are
installed according to this document, and have NOT been
bypassed.
The power supply voltage matches the voltage on the
identification label of the unit.
The specified wires are used for the interconnection
cable.
The indoor unit receives the signals of the user interface.
There are NO loose connections or damaged electrical
components in the switchbox.
The insulation resistance of the compressor is OK.
There are NO damaged components or squeezed
pipes on the inside of the indoor and outdoor units.
There are NO refrigerant leaks.
The correct pipe size is installed and the pipes are
properly insulated.
The stop valves (gas and liquid) on the outdoor unit are
fully open.
9.2 To perform a test run
Prerequisite: Power supply MUST be in the specified range.
Prerequisite: Test run may be performed in cooling or heating
mode.
Prerequisite: Test run should be performed in accordance with the
operation manual of the indoor unit to make sure that all functions
and parts are working properly.
1 In cooling mode, select the lowest programmable temperature.
In heating mode, select the highest programmable temperature.
Test run can be disabled if necessary.
2 When the test run is finished, set the temperature to a normal
level. In cooling mode: 26~28°C, in heating mode: 20~24°C.
3 The system stops operating 3 minutes after the unit is turned
OFF.
9.2.1 To perform a test run using the user
interface
1 Press to switch the system on.
2 Press and simultaneously.
3 Press , select and press .
Result: Test run operation will stop automatically after about
30minutes.
4 To stop operation sooner, press .
10 Technical data
▪ A subset of the latest technical data is available on the regional
Daikin website (publicly accessible).
▪ The full set of latest technical data is available on the Daikin
Business Portal (authentication required).
10.1 Wiring diagram
10.1.1 Unified wiring diagram legend
For applied parts and numbering, refer to the wiring diagram on the
unit. Part numbering is by Arabic numbers in ascending order for
each part and is represented in the overview below by "*" in the part
code.
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