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Installation manual

7

RR+RQ71+10 RR+RQ7 RR+RQ71~12

RR+RQ71B2W1B

Split System air conditioners

4PW23689-1C

Cautions for handling the valve cover 

The valve cover is sealed where
indicated by the arrow. 
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 port

After the work, tighten the valve cover in place.
Tightening torque: 10.8~14.7 N•m

Precautions when connecting field piping and regarding 
insulation

Be careful not to let the indoor and outdoor branch piping come
into contact with the compressor terminal cover.
If the liquid-side piping insulation might come into contact with it,
adjust the height as shown in the figure below. Also, make sure
the field piping does not touch the bolts or outer panels of the
compressor.

When the outdoor unit is installed above the indoor unit the
following can occur:
The condensated water on the stop valve can move to the
indoor unit. To avoid this, please cover the stop valve with
sealing material.

If the temperature is higher than 30°C and the humidity is higher
than RH 80%, then the thickness of the sealing materials should
be at least 20 mm in order to avoid condensation on the surface
of the sealing.

Be sure to insulate the liquid and gas-side field piping and the
refrigerant branch kit.

(The highest temperature that the gas-side piping can reach is
around 120°C, so be sure to use insulating material which is
very resistant.)

Cautions for flare connection

Please refer to the table for the dimensions for processing flares
and for the tightening torques. (Too much tightening will end up
in splitting of the flare.)

When connecting the flare nut, 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 piping connections with nitrogen and such.

Cautions for necessity of a trap

Since there is fear of the oil held inside the riser piping flowing back into
the compressor when stopped and causing liquid compression
phenomenon, or cases of deterioration of oil return, it will be necessary
to provide a trap at an appropriate place in the riser gas piping.

Trap installation spacing. 

(See figure 5)

A trap is not necessary when the outdoor unit is installed in a
higher position than the indoor unit.

Cautions for brazing

Be sure to carry out a nitrogen blow when brazing.
Brazing without carrying out nitrogen replacement or releasing
nitrogen into the piping will create large quantities of oxidized
film on the inside of the pipes, adversely affecting valves and
compressors in the refrigerating system and preventing normal
operation.

When brazing while inserting nitrogen into the piping, nitrogen
must be set to 0.02 MPa with a pressure-reducing valve (=just
enough so that it can be felt on the skin).

Tightening torque

Liquid pipe

13.5~16.5 N•m

Gas pipe

22.5~27.5 N•m

NOTE

Any exposed piping may cause condensation or burns
if touched.

2

1

3

5

5

A

4

4

6

1

Compressor

2

Terminal cover

3

Indoor and outdoor 
field piping

4

Corking, etc.

5

Insulation material

6

Bolts

A

Be carefull with pipe, 
bolt and outer panel 
connections

Piping 

size

Flare nut 

tightening torque

A dimensions 

for processing 

flares (mm)

Flare shape

Ø9,5

33~39 N•m 

12,8~13,2

Ø15,9

63~75 N•m 

19,3~19,7

Ø19,1

98~110 N•m 

23,6~24,0

A

Outdoor unit

B

Indoor unit

C

Gas piping

D

Liquid piping

E

Oiltrap

H

Install trap at each difference in height of 15 m.

1

Refrigerant piping

2

Part to be brazed

3

Taping

4

Hands valve

5

Pressure-reducing valve

6

Nitrogen

R=0.4~0.8

45

° ±

2

90

°±

2

A

1

2

3

4

5

6

6

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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