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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 

"Failure

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

installation" on page 13

.

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

?

-

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

Summary of Contents for RZQS71B7V3

Page 1: ...INSTALLATION MANUAL RZQS71B7V3 RZQS100B7V3 RZQS125B7V3 Split System air conditioners...

Page 2: ...7 6 6 8 3 3 1 3 2 4 5 A B A E B C D H H1 L1 H1 H2 L3 L1 L2 H1 H2 L4 L1 L3 L2 H1 H2 L7 L1 L6 L5 L4 L3 L2 A A B2 B2 B2 C C D1 D1 D1 D2 D2 D2 D2 D2 E E H H L1 L1 L1 L2 L2 L2 A A B1 B1 B1 B1 B1 B1 B2 B2 B...

Page 3: ...u condi ia ca acestea s fie utilizate n conformitate cu instruc iunile noastre 19 skladni z naslednjimi standardi in drugimi normativi pod pogojem da se uporabljajo v skladu z na imi navodili 20 on va...

Page 4: ...on may result in water leakage electric shocks or fire Perform installation work in accordance with this installation manual Improper installation may lead to water leakage electric shocks or fire Whe...

Page 5: ...rding to national regulations Do not connect the earth wire to gas or water pipes lightning conductor or telephone earth wire Incomplete grounding may cause electric shocks Gas pipe Ignition or explos...

Page 6: ...ration of the operational capacity Frequent frost acceleration in heating operation Disruption of operation due to rise of high pressure When a strong wind blows continuously on the face of the unit t...

Page 7: ...pe disposal If drain pipe disposal from the outdoor unit causes trouble for example if the drain water may splash on people provide the drain piping using a drain socket optional Make sure the drain w...

Page 8: ...e sizes must have the same size as the connected indoor units pipe sizes Branch see marking on figures 3 4 and 5 Selection of branch pipe L A L H 0 L 1 2H 150 250 1 2H L 200 300 H L Installation impos...

Page 9: ...nch pipe to the indoor unit should be as short as possible Try to keep lengths of both branch pipes to the indoor unit equal REFRIGERANT PIPING Field pipes can be installed in four directions Figure F...

Page 10: ...r to the figure Take care not to damage it After operating the valve be sure to tighten the valve cover properly Check for refrigerant leakage after tightening the cap Cautions for handling service po...

Page 11: ...f oxidised film on the inside of the pipes adversely affecting valves and compressors in the refrigerating system and preventing normal operation When brazing pipes however do not use oxidation preven...

Page 12: ...0 m G1 G2 30 m Based on this decide R2 in the table R1 0 3 Total additional charge amount R R1 R2 kg Table 2 Length unit m additional charging of refrigerant unit kg Example 1 1 G1 L1 35 m G2 L2 L3 7...

Page 13: ...e bundled cables into a unit Fix cables so that cables do not make contact with the pipes especially on high pressure side Secure the electrical wiring with clamping material as shown in the figure be...

Page 14: ...wiring works Form the wires and fix the cover firmly so that the cover may be fit in properly Precautions on wiring of power supply and inter unit wiring Use a round crimp style terminal for connectio...

Page 15: ...pt 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 unusu...

Page 16: ...r code U4 or UF is displayed on the remote controller check the inter unit branch wiring connection The reversed phase protection detector of this product only works during the initialisation stage af...

Page 17: ...r air R2T Thermistor coil R3T Thermistor discharge pipe R4T Thermistor suction pipe R5T Thermistor power module RC Signal receiver circuit S1NPL Pressure sensor low S1PH Pressure switch high S1PL Pres...

Page 18: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW32097 1...

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