Before Operation; Checks After Completion Of Work; Test Operation - Daikin R-410A Installation Manual

EDUS39-605
Check that wiring lines do not make contact with refrig-
•
erant piping.

BEFORE OPERATION

Checks after completion of work

CAUTION
CAUTION Never connect power supply wiring to the ter-
•
minal block for remote controller wiring as this could
damage the entire system.
Attach the power wire securely.
•
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.
After the installation, check the following before switch-
ing on the circuit breaker:
1. The position of the switches that requires an initial setting
Make sure that switches are set according to your applica-
tion needs before turning on the power supply.
2. Power supply wiring and transmission wiring:
Use a designated power supply and transmission wiring
and make sure that it has been carried out according to the
instructions described in this manual, the wiring diagrams
and local and national regulations.
3. Pipe sizes and pipe insulation:
Make sure that correct pipe sizes are installed and that the
insulation work is properly executed.
4. Additional refrigerant charge:
The amount of refrigerant to be added to the unit should be
written on the included [Additional Refrigerant Charge]
label, and attach it to the rear side of the front cover.
5. Measurement of insulation in the main power circuit:
Using a megatester for 500V, check that the insulation
resistance of 2MW or more is attained by applying a volt-
age of 500V DC between power terminals and ground.
Never use the megatester for the transmission wiring.
6. Installation date:
Be sure to record the installation date on the [Additional
Refrigerant Charge] label.

Test Operation

After completing installation, be sure to open the valve. Oper-
ating the unit with the valve shut will break the compressor.
Power supply connection
When operating the unit for the first time after installation, be
sure to perform a test operation following these steps. Not per-
forming a test operation when the unit is first installed may
prevent the unit from operating properly.
Installation of Outdoor Units
During the operation, monitor the outdoor unit operation
•
status and check for any incorrect wiring.
1. Turn ON the power to the outdoor
units and indoor units.
2. Check the LED on the P-board (A1P) in the outdoor unit to see if the data transmission
is performed normally.
Microcomputer
LED display
operation Page
(Default status
monitor
before delivery)
HAP H1P
One outdoor unit installed
When multiple
Master station
outdoor unit
Sub station
installed (*)
(*) The base (parent) unit is the outdoor unit to which the interconnecting wiring for the
indoor units is connected. The other outdoor units are child units.
.
3. As necessary, configure the system
settings onsite by using the dipswitch
(DS1) on the outdoor unit P-board
(A1P) and push button switches
(BS1 to 5).
.
When the system is in the multiple-
outdoor unit configuration (Out Multi),
perform the configuration on the parent
unit. (Any settings made on a child unit
will be ignored.)
4. Check if the shutoff valves are in
appropriate status and correct any
wrong status. (Refer to the table in
"6-6 Additional Refrigerant Charge".)
5. Perform the check operation
following the instructions printed
on the [Service Precaution] label.
Refer to figure 21.
Electric box lid
1.
Service lid
2.
[Service precautions] Label location
3.
Cautions for check operation
If the system is started within about 12 minutes after the
•
outdoor/indoor units are turned ON, the compressor will not
run and H2P lights up. Before starting an operation, always
verify that the LED display shows the contents of the table
in Section 8-2, Test Operation.
The system may require up to 10 minutes until it can start
•
the compressor after an operation start. This is a normal
operation to equalize the refrigerant distribution.
The check operation does not provide any means of check-
•
ing the indoor units individually. For that purpose, perform
normal operation using the remote controller after the
check operation.
The check run cannot be performed in recovery or other
•
modes.
Before running a check on the unit, changing the indoor
•
remote controller settings might cause the error code [UF]
to be displayed and prevent a proper check to be run.
Installation
Make sure to turn ON the power 6 hours before
starting the operation. This is necessary to warm
the crankcase preliminarily by the electric heater.
Ready/ Cooler/heater changeover
Low
Error
Bulk Demand
Bulk
Individual noise
(parent) (child)
H2P H3P H4P H5P H6P H7P
LED display: OFF ON Blinking
Always perform configuration after turning ON the
power. To learn the setting method, refer to the
[Service Precautions] label attached at the
position shown in the figure on the right
(Electric box lid in outdoor unit).
(Remember, the actual settings you have made
must be recorded on the [Service Precautions]
label.)
Caution Do not leave any shutoff valve closed.
Otherwise the compressor will fail.
The system operates for about 15 minutes
(30 minutes at maximum) and automatically
stops the test operation. The system can start a
normal operation about 15 minutes after the test
operation, only if the remote controller displays
no error codes.
Multi
H8P
34