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RR+RQ71+10 RR+RQ7 RR+RQ71~12 
RR+RQ71B2W1B
Split System air conditioners
4PW23689-1C

Installation manual

8

E

VACUATING

Do not purge the air with refrigerants. Use a vacuum pump to
vacuum the installation. No additional refrigerant is provided for
air purging.

Pipes inside the units were checked for leaks by the
manufacturer. The refrigerant pipes fit on site are to be checked
for leaks by the installer.

Confirm that the valves are firmly closed before leak test or
vacuuming.

Set up for vacuuming and leak test: 

see 

figure 7

Procedure for leak test

Leak test must satisfy EN378-2. 

C

HARGING

 

REFRIGERANT

Important information regarding the refrigerant used

This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.

Refrigerant type:

R410A

GWP

(1)

 value:

1975

(1)

 GWP = global warming potential

Please fill in with indelible ink,

 the factory refrigerant charge of the product,

 the additional refrigerant amount charged in the field and

+

➁ 

the total refrigerant charge

on the fluorinated greenhouse gases label supplied with the product.

The filled out label must be adhered on the inside of the product and
in the proximity of the product charging port (e.g. on the inside of the
service cover).

Precaution for servicing

This unit requires additional charging of refrigerant according to the
length of piping connected at the site. Charge the refrigerant to the
liquid pipe in its liquid state. Since R410A is a mixed refrigerant, its
composition changes if charged in a state of gas and normal system
operation would no longer be assured.

On this model it is not necessary to charge additionaly if the piping
length 

30 m.

A

Pair system

B

Simultaneous operation system

1

Pressure gauge

2

Nitrogen

3

Refrigerant

4

Weighing machine

5

Vacuum pump

6

Stop valve

7

Main pipe

8

Branched pipes

9

Pipe branching kit (optional)

1

Evacuate the pipes and check vacuum

(1)

. (No pressure 

increase for 1 minute.)

(1) Use a 2-stage vacuum pump with a non return valve which 

can evacuate to –100.7 kPa (5 Torr, –755 mm Hg).
Evacuate the system from the liquid and gas pipes by using 
a vacuum pump for more than 2 hours and bring the system 
to –100.7 kPa. After keeping the system under that condition 
for more than one hour, check if the vacuum gauge rises or 
not. If it rises, the system may either contain moisture inside 
or have leaks.

2

Break the vacuum with a minimum of 2 bar of nitrogen. (Never 
pressurize more than 4.15 MPa.)

3

Conduct leak test by applying soap water, etc. to the connecting 
part of the pipes.

4

Discharge nitrogen.

5

Evacuate and check vacuum again

(1)

.

6

If vacuum gauge does no longer rise, the stop valves can be 
opened.

NOTE

Following should be executed if there is a possibility of
moisture remaining in the pipe (if piping work is carried out
during the raining season or over a long period of time,
rainwater may enter the pipe during work).
After evacuating the system for 2 hours, pressurize the
system to 0.05 MPa (vacuum break) with nitrogen gas and
evacuate the system again using the vacuum pump for
1 hour to –100.7 kPa (vacuum drying). If the system
cannot be evacuated to –100.7 kPa within 2 hours, repeat
the operation of vacuum break and vacuum drying. Then
after leaving the system in vacuum for 1 hour, confirm that
the vacuum gauge does not rise.

After air purging with a vacuum pump it may happen that
the refrigerant pressure does not rise, not even if the stop
valve is opened. Reason for this phenomenon is the closed
state of for instance the expansion valve in the outdoor unit
circuit, but this is not a problem for running the unit.

NOTE

National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide the
appropriate official national language on the unit.
Therefore, an additional multilingual fluorinated greenhouse
gases label is supplied with the unit.

Sticking instructions are illustrated on the backside of that
label.

When performing service on the unit requiring the
refrigerant system to be opened, refrigerant must be
evacuated according to local regulations.

NOTE

On twin/triple application, piping length means sum of
main pipe and branch pipe.

Piping length is the 1 way length, gas or liquid.

3

5

6

2

1

4

1

factory refrigerant charge 
of the product:
see unit name plate

2

additional refrigerant 
amount charged in the 
field

3

total refrigerant charge

4

Contains fluorinated 
greenhouse gases 
covered by the Kyoto 
Protocol

5

outdoor unit

6

refrigerant cylinder and 
manifold for charging

Summary of Contents for RR71B8V3B

Page 1: ...INSTALLATION MANUAL RR71B8V3B RR71B2V3B RR100B8V3B RR71B8W1B RR71B2W1B RR100B8W1B RR125B8W1B RQ71B8V3B RQ71B2V3B RQ100B8V3B RQ71B8W1B RQ71B2W1B RQ100B8W1B RQ125B8W1B Split System air conditioners...

Page 2: ...1 2 4 5 2 4 5 9 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 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 B2 C C D1 D1...

Page 3: ...ttaen m r yksi 14 za dodr en ustanoven p edpisu 15 prema odredbama 16 k veti a z 17 zgodnie z postanowieniami Dyrektyw 18 n urma prevederilor 19 ob upo tevanju dolo b 20 vastavalt n uetele 21 22 laika...

Page 4: ...the power supply circuit or improper electrical construction may lead to electric shocks or fire Make sure that all wiring is secure using the specified wires and ensuring that external forces do not...

Page 5: ...contains high levels of salt such as that near the ocean Where voltage fluctuates a lot such as that in factories In vehicles or vessels Where acidic or alkaline vapour is present BEFORE INSTALLATION...

Page 6: ...e please install a waterproof plate within 150 mm of the underside of the unit in order to prevent the invasion of water from the lower direction 6 When installing the unit in a place frequently expos...

Page 7: ...ld comply with relevant local and national regulations The minimal pipe thickness for R410A piping must be in accordance with the table below O Annealed 1 2H Half hard Suction side obstacle Obstacle i...

Page 8: ...piping kit Install the branch pipes horizontally with a maximum inclination of 15 or vertically Length of branch pipe to the indoor unit should be as short as possible Try to keep lengths of both bra...

Page 9: ...e deformed if only a torque wrench is used when loosening or tightening flare nuts always lock the shut off valve with a wrench and then use a torque wrench Do not place wrenches on the valve cover Do...

Page 10: ...t coat the flare inner surface with ether oil or ester oil and initially tighten 3 or 4 turns by hand before tightening firmly After completing the installation carry out a gas leak inspection of the...

Page 11: ...rs and bring the system to 100 7 kPa After keeping the system under that condition for more than one hour check if the vacuum gauge rises or not If it rises the system may either contain moisture insi...

Page 12: ...mount R R1 R2 1 00 0 30 1 30 kg Example 2 1 G1 L1 5 m G2 L2 L3 L4 17 17 20 54 2 Over 30 m a G1 5 m R1 0 0 kg b G1 G2 30 5 54 30 29 6 4 R2 0 90 kg 3 Refrigerant charge amount R R1 R2 0 0 0 9 0 9 kg Tot...

Page 13: ...ground wire to the shut off valve attachment plate so that it does not slide 2 Secure the ground wire to the shut off valve attachment plate one more time along with the electric wiring and the inter...

Page 14: ...d wiring components Point for attention regarding quality of the public electric power supply This equipment complies with EN IEC 61000 3 11 1 provided that the system impedance Zsys is less than or e...

Page 15: ...For a missing phase in case of W1 units E0 or E6 will be displayed on the remote controller of the indoor unit Operation will be impossible with either one of these phenomena If this happens turn off...

Page 16: ...Q2M Thermo switch M1F M2F Q1RP Phase reverse circuit R1T Thermistor air R2T Thermistor coil R3T Thermistor discharge RC Signal receiver circuit S1PH Pressure switch HIGH S1PL Pressure switch LOW SD S...

Page 17: ...NOTES NOTES...

Page 18: ...4PW23689 1C Copyright Daikin...

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