7 Commissioning
Installer reference guide
22
2(A)MXM40+50M(3)(4)V1B(9)_2(A)MXF40+50A2V1B
R32 Split series
4P600463-2 – 2019.10
3
Turn on the main power supply.
6.8.6
To close the outdoor unit
1
Close the switch box cover.
2
Close the service cover.
NOTICE
When closing the outdoor unit cover, make sure that the
tightening torque does NOT exceed 4.1 N•m.
7
Commissioning
NOTICE
General
commissioning
checklist.
Next
to
the
commissioning instructions in this chapter, a general
commissioning checklist is also available on the Daikin
Business Portal (authentication required).
The general commissioning checklist is complementary to
the instructions in this chapter and can be used as a
guideline and reporting template during the commissioning
and hand-over to the user.
7.1
Overview: Commissioning
This chapter describes what you have to do and know to
commission the system after it is installed.
Typical workflow
Commissioning typically consists of the following stages:
1
Checking the "Checklist before commissioning".
2
Performing a test run for the system.
7.2
Precautions when commissioning
INFORMATION
During the first running period of the unit, the required
power may be higher than stated on the nameplate of the
unit. This phenomenon is caused by the compressor, that
needs a continuous run time of 50 hours before reaching
smooth operation and stable power consumption.
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
NOTICE
ALWAYS complete the refrigerant piping of the unit before
operating. If NOT, the compressor will break.
7.3
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.
The
indoor unit
is properly mounted.
The
outdoor unit
is properly mounted.
The system is properly
earthed
and the earth terminals
are tightened.
The
power supply voltage
matches the voltage on the
identification label of the unit.
There are NO
loose connections
or damaged electrical
components in the switch box.
There are NO
damaged components
or
squeezed
pipes
on the inside of the indoor and outdoor units.
There are NO
refrigerant leaks
.
The
refrigerant pipes
(gas and liquid) are thermally
insulated.
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.
Drainage
Make sure drainage flows smoothly.
Possible consequence:
Condensate water might drip.
The indoor unit receives the signals of the
user interface
.
The specified wires are used for the
interconnection
cable
.
The
fuses, circuit breakers,
or locally installed protection
devices are installed according to this document, and
have NOT been bypassed.
Check if marks (room A~E) on the wiring and piping
match for each indoor unit.
Check if the priority room setting is set for 2 or more
rooms. Keep in mind that the DHW generator for Multi or
the Hybrid for Multi shall not be selected as the priority
room.
7.4
Checklist during commissioning
To perform a
wiring
check.
To perform an
air purge
.
To perform a
test run
.
7.5
Trial operation and testing
Before starting the test run, measure the voltage at the
primary side of the
safety breaker
.
The
piping and wiring work
match.
The
stop valves
(gas and liquid) on the outdoor unit are
fully open.
Initialization of the Multi system can take several minutes depending
on the number of indoor units and options used.
