Daikin SkyAir RZQ18PVJU, Installation Manual

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15 English
Piping size and heat insulation: 5.
Refer to “ 6-1 Selection of piping material ”, “ 6-5 Heat
insulation of the piping ”.
Check of stop valve: 6.
Confi rm that the stop valve is open on both the liquid line
and gas line.
Record of amount of additional refrigerant:
7.
Record the amount on the label sticked on the back of the
front panel.
Measurement of insulation in main power circuit:
8.
Use the megatester for 500 V. •
Do not use any megatester for low voltage electric circuits •
except 230 V.
(Wiring between the outdoor unit and the indoor unit)
CAUTION
<To piping technician>
Make sure to open the stop valve after fi nishing the piping •
work.
(Operating the air conditioner with the stop valve shut may
damage the compressor.)
TEST OPERATION PROCEDURE 9.
A crankcase heater is mounted for smooth startup. Make
sure to turn on the power 6 hours before starting opera-
tion for supplying the power to the crankcase heater.
WARNING
Make sure to close the outer panel before leaving the •
outdoor unit in the power ON status.
To avoid injury, always make sure that the circuit breaker on
•
the power supply panel of the installation is switched off
before doing any work.
Cautions before turning on the power
Put the insulating cover securely onto the electric parts box. •
After turning on the power, check the settings and LED •
indicators on the PC board (A1P) in the outdoor unit
through the opening of the insulating cover.
Power on and check operation 9-1
Make sure to perform the check operation after installation. •
(If the air conditioner is operated using the indoor remote
controller without performing the check operation, the mal-
function code “U3” is displayed in the indoor remote control-
ler, and normal operation is disabled.)
In the check operation, the status of the outdoor unit is •
checked, and incorrect wiring is checked for.
(1) • Close the outer panel
of the outdoor unit.
• Turn ON the power to
the outdoor unit and
indoor units.
Caution
Make sure to turn on the
power 6 hours before
starting operation for
supplying the power to
the crankcase heater.
(2) • Open the outer panel of the outdoor unit.
• Check the LED on the PC board (A1P
and A2P) in the outdoor unit to see if the
data transmission is performed normally.
One outdoor
unit installed
H1P H5P H4P H6P H7P H2P H3P HAP
Blinking ON OFF LED display:
LED display
(Default
status
before
delivery)
A1P A2P
SER
VICE MONIT
OR
MODE
IND
SLA
VE
MASTER
TEST/HWL
C/H SELE- CT
OR
L.N.O
.P
.
DEMAND
The power is
supplied to the
outdoor unit.
Take due care
during the work to
prevent electric
shock.
(3) • When performing the
low-noise operation
(L.N.O.P.) or demand
(DEMAND) operation
upon request from the
customer, perform the
setting using the
pushbutton switches (BS1
to BS5) on the PC board
(A2P) in the outdoor unit.
• Press each pushbut-
ton switch from the
opening of the
insulation cover.
(Do not remove the
insulation cover.)
The power is supplied to the •
outdoor unit. Take due care during
the work to prevent electric shock.
Before using the pushbutton
•
switches (BS1 to BS5) for setting,
confi rm that the microcomputer
(SERVICE) monitor is lit.
For the setting method, refer to the
•
[Service Precautions] label
attached on the back of the front
panel of the outdoor unit. (Make
sure to write the contents of setting
on the [Service Precautions] label.)
(4) Confi rm that the shutoff
valves are open on both
the liquid and gas lines. If
they are closed, open them.
Caution
Do not leave any
shutoff valve closed.
Otherwise the
compressor will fail.
(5) Press and hold the test
run button (BS4) for
5 seconds or more to start
the check operation.
For the details, refer to the
Check operation method
on the [Service Precau-
tions] label.
When leaving the outdoor unit during •
the check operation for unavoidable
reasons, ask another installation
worker to watch the outdoor unit, or
close the outside panel.
The system operates the check
•
operation for about 15 minutes
(30 minutes maximum), then stops
automatically.
The system can start normal operation
about 5 minutes after the check
operation if the remote controller does
not display any malfunction code.
During the check operation, the
•
status under execution is indicated
on the remote controller.
(6) After the check operation, make sure to close the outside panel
of the outdoor unit.
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