12
|
Commissioning
Installer reference guide
60
2(A)MXM40+50 + 2(A)MXF40+50
R32 Split series
4P600463-2C – 2020.08
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.
12.4 Checklist during commissioning
To perform a
wiring
check.
To perform an
air purge
.
To perform a
test run
.
12.5 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.
12.5.1 To perform a test run
Prerequisite:
Power supply MUST be in the specified range.
Prerequisite:
Test run operation may be done in cooling or heating mode.
Prerequisite:
Test run should be done 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.
