Checklist During Commissioning; About The Sv Unit Test Run; About The System Test Run; To Perform A Test Run - Daikin VRV 5-S RXYSA8AMY1B Installation And Operation Manual

19 Commissioning
Requirements for R32 equipment
Make sure the system meets all requirements that are
described in the following chapter:
refrigerant" [ 4 8].
equipment using R32
Field settings
Make sure all field settings you want are set. See
settings" [ 4 40].
"18.1 Making field
Field setting [2-54] (direct connection to the outdoor unit)
In case of a system with at least one indoor unit that has a
direct connection to the outdoor unit, make sure to change
field setting [2-54] from 0 to 1. See "[2‑54]" [ 4 42].
Installation date and field setting
Be sure to keep record of the installation date on the
sticker on the rear of the upper front panel according to
EN60335‑2‑40 and keep record of the contents of the field
setting(s).
19.3

Checklist during commissioning

To perform a SV unit test run. See the SV unit
installation manual for more information.

To perform a test run.

To perform a SV/indoor unit connection check
(optional).
19.4

About the SV unit test run

The SV unit test run has to be performed on all SV units in the
system, before the test run of the outdoor unit. The SV unit test run
has to confirm that the required safety measures are properly
installed. Even when no safety measures are required, it is
necessary to perform this SV unit test run and confirm the result,
because the test run of the outdoor unit checks this confirmation for
all SV units in the system. See the SV unit installation and operation
manual for more information.
NOTICE
It is very important that all refrigerant piping work is done
before the units (outdoor, SV or indoor) are powered.
When the units are powered, the expansion valves
initialise. This means that the valves close.
If any part of the system had already been powered before,
FIRST activate setting [2-21] on the outdoor unit to open
the expansion valves again THEN power off the unit to
conduct the SV unit test run.
19.5

About the system test run

NOTICE
Make sure to carry out the test run after the first
installation. Otherwise, the malfunction code
displayed on the user interface and normal operation or
individual indoor unit test run cannot be carried out.
The procedure below describes the test operation of the complete
system. This operation checks and judges following items:
▪ Check for incorrect wiring (communication check with indoor
units).
▪ Check of the stop valves opening.
▪ Judgement of piping length.
▪ Abnormalities on indoor units cannot be checked for each unit
separately. After the test operation is finished, check the indoor
units one by one by performing a normal operation using the user
interface. Refer to the indoor unit installation manual for more
details concerning the individual test run.
Installation and operation manual
44
"2.1 Instructions for
19.5.1
1 Close all front panels to prevent misjudgement.
2 Make sure all field settings you want are set; see
3 Turn ON the power to the outdoor unit and the connected
4 Make sure the default (idle) situation is existing; see
Steps during the automatic system test run procedure:
5 Check the test operation results on the outdoor unit 7‑segment
Normal completion No indication on the 7‑segment display (idle).
Abnormal
completion
will be
19.5.2
The test operation is only completed if there is no malfunction code
displayed on the user interface or outdoor unit 7‑segment display. In
case of a displayed malfunction code, perform correcting actions as
explained in the malfunction code table. Carry out the test operation
again and confirm that the abnormality is properly corrected.
INFORMATION
▪ It may take 10 minutes to achieve a uniform refrigerant
state before the compressor starts.
▪ During the test operation, the refrigerant running sound
or the magnetic sound of a solenoid valve may become
loud and the display indication may change. These are
not malfunctions.
To perform a test run
settings" [ 4 40].
field
indoor units.
NOTICE
Turn ON the power 6 hours before operation in order to
have power running to the crankcase heater and to protect
the compressor.
2" [ 4 41]. Push BS2 for 5 seconds or more.
access mode 1 or
The unit will start test operation.
Result: The test operation is automatically carried out, the
outdoor unit display will indicate "
operation" and "Under centralised control" will display on the
user interface of indoor units.
Step
Control before start up (pressure equalisation)
Cooling start up control
Cooling stable condition
Communication check and stop valve check
Pipe length check
Pump down operation
Unit stop
INFORMATION
During the test operation, it is not possible to stop the unit
operation from a user interface. To abort the operation,
press BS3. The unit will stop after ±30 seconds.
display.
Completion
Indication of malfunction code on the
7‑segment display.
Refer to "19.5.2 Correcting after abnormal
completion of the test
actions for correcting the abnormality. When
the test operation is fully completed, normal
operation will be possible after 5 minutes.
Correcting after abnormal completion of
the test run
"18.1 Making
"18.1.3 To
" and the indication "Test
Description
Description
run" [ 4 44] to take
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752781-1B – 2024.02