RZQS71~125B7V3
Split System air conditioners
4PW32097-1
Installation manual
12
■
In wiring, make certain that prescribed wires are used, carry out
complete connections, and fix the wires so that outside forces
are not applied to the terminals.
Specifications of standard wiring components
T
EST
OPERATION
Pre-run checks
■
Be sure to perform a test run.
■
Be sure to fully open the liquid-side and gas-side stop valves. If
you operate the unit with stop valves closed, the compressor will
break down.
■
Be sure to execute the first test run of the installation in cooling
mode operation.
■
Never leave the unit unattended with an open front panel during
test run.
Test run
1
Be sure to turn power on at least 6 hours before starting
operation in order to protect the compressor.
2
Make sure the liquid and gas shut-off valves are open.
3
Be sure to close the frontside panel before operation, as not
doing so can cause electric shock.
4
Be sure to set the unit to cooling operation mode.
5
Press the inspection/test operation button of the remote
controller 4 times (2 times in case of a wireless remote
controller) to go into the test run mode.
6
Press the ON/OFF button within 10 seconds to start the test run
and check the operation status for about 6 minutes. The
refrigerant pressure may not rise immediately, even if the shut-
off valve is opened after an air purge is performed using a
vacuum pump. This is because the indoor unit refrigerant piping
is closed off with electric valves inside. This will not create any
problems during operation.
7
Push the air flow direction adjust button and check if the unit is
responding to the new air flow direction position.
8
Press the inspection/test operation button of the remote
controller 2 times to go into check mode and to make sure that
the malfunction code displays “
00
” (=normal). In case the
malfunction code does not display “
00
”, refer to
diagnosis at the moment of first installation" on page 13
.
9
If the inspection/test operation button is pressed 4 times during
a test run, the unit returns to normal operation.
10
Check all functions according to the operation manual.
Precautions regarding test-runs
1
In order to detect stop valves failing to open, operation of the
unit is compulsorily performed in cooling for 2-3 minutes during
the first test run, even if the remote controller was set to heating
operation. In this case, the remote controller will have kept
displaying the heating symbol all the time and the unit will switch
to heating operation automatically after elapse of that time.
2
In case you cannot operate the unit in test run mode for any
unusual reason, refer to
"Failure diagnosis at the moment of first
3
In case you cannot operate the unit in test run mode, the unit
usually returns to its normal state after 30 minutes.
4
In case of a wireless remote controller, execute the test run only after
having installed the indoor unit decoration panel with infra-red
receiver first.
5
In case the panels of indoor units are not yet installed to the
indoor units, make sure to shut off the power supply after
finishing the complete test run.
RZQS71
RZQS100
RZQS125
Minimum circuit
amps (MCA)
(a)
(a) Stated values are maximum values (see electrical data of combination with
indoor units for exact values).
17.7
19.8
28.2
Recommended
field fuse
20 A
32
A
Wire type
(b)
(b) Only in protected pipes, use H07RN-F when protected pipes are not used.
H05VV-U3G
Size
Wiring size must comply with the applicable local
and national code
Wire type of
wiring between
the units
H05VV-U4G2.5
NOTE
The earth leakage breaker must be a high-speed type
breaker of 30 mA (<0.1 s).
WARNING
Live parts can be easily touched by accident.
Never leave the unit unattended during installation or
servicing when the service panel is removed.
NOTE
Remark that during the first running period of the unit,
required power input may be higher than stated on the
nameplate of the unit. This phenomenon originates
from the compressor that needs elapse of a 50 hours
run in period before reaching smooth operation and
stable power consumption.
Items to check
Electrical wiring
Inter-unit wiring
Ground wire
■
Is the wiring as mentioned on the wiring
diagram?
Make sure no wiring has been forgotten and that
there are no missing phases or reverse phases.
■
Is the unit properly grounded?
■
Is the wiring between units connected in series
correct?
■
Are any of the wiring attachment screws loose?
■
Is the insulation resistance at least 1 M
Ω
?
-
Use a 500 V mega-tester when measuring
insulation.
-
Do not use a mega-tester for low-voltage
circuits.
Refrigerant piping
■
Is the size of the piping appropriate?
■
Is the insulation material for the piping attached
securely?
Are both the liquid and gas pipes insulated?
■
Are the shut-off valves for both the liquid side and
the gas side open?
Extra refrigerant
■
Did you write down the extra refrigerant and the
refrigerant piping length?
Opening direction
A
Liquid side
B
Gas side
Remove the cap and turn
counterclockwise with a
hex wrench until it stops
A
B
