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7

English

(3)

If the piping length between the outdoor units exceeds 2 m, 
create a rise of 200 mm or more in the gas line under a length 
of 2 m from the outdoor unit multi connection piping kit.

5.

Branching the refrigerant piping
Heed the restrictions below when installing the refrigerant branch-
ing kit and read the installation instruction manual with the kit.
(Improper installation could lead to malfunctioning or breakdown 
of the outdoor unit.)

<REFNET joint>

Install the REFNET joint so it splits horizontally or vertically.

(Refer to figure 16)

1.

Horizontal surface

2.

±30° or less

3.

Horizontal

4.

Vertical

<REFNET header>

Install the REFNET header so it splits horizontally.

(Refer to figure 17)

1.

Horizontal surface

<Outdoor unit multi connection piping kit>

Install the joint horizontally so that the attached warning label 
faces strait up, and the tilt is within ±15°. 

(Refer to figure 18-1)

Do not install vertically. 

(Refer to figure 18-2)

Maintain a straight portion of 500 mm or more until the split of 
the joint without wrapping any onsite piping around this area. 
Over 500 mm of straight area can be maintained by connect-
ing at least 120 mm of onsite pipe (straight) to the joint.

(Refer to figure 18-3)

(Refer to figure 18)

1.

Warning label

2.

Horizontal surface

3.

±15° or less

4.

Ground

5.

Onsite pipe (120mm length or more)

6.

Straight part of 500mm or more

Prohibited pattern

Oil remains in the stopping outdoor unit.

Change to pattern 1 or pattern 2

Front connections

Side (bottom) connections

to indoor unit

to indoor unit

Oil remains in the outdoor unit B when the system stops.

Unit A

Unit B

Unit A

Unit B

Change as shown in the figure below.

Rising height:
200 mm or more

to indoor 
unit

to indoor 
unit

to indoor unit

to indoor unit

to indoor unit

to indoor unit

If less than 2m

If 2 m or more

2m or more

Rising height: 
200 mm or more

less than 2m

less than 2m

Outdoor unit gas pipe

Outdoor unit gas pipe

01_EN_3P226891-13Q.fm  Page 7  Thursday, December 2, 2010  10:15 AM

Summary of Contents for VRVIII-Q Series

Page 1: ...B RQYQ18PY1B RQYQ20PY1B RQYQ22PY1B RQYQ24PY1B RQYQ26PY1B RQYQ28PY1B RQYQ30PY1B RQYQ32PY1B RQYQ34PY1B RQYQ36PY1B RQYQ38PY1B RQYQ40PY1B RQYQ42PY1B RQYQ44PY1B RQYQ46PY1B RQYQ48PY1B English Deutsch Fran a...

Page 2: ...00_CV_3P226891 13Q fm Page 2 Thursday December 2 2010 1 08 PM...

Page 3: ...200 300 Pattern 3 2 1 1500 3 1 4 2 5 2 mm 1000 1 0 0 0 1000 1 5 0 0 1500 1500 figure 2 2 4 5 1 8 9 10 3 6 7 11 figure 6 1 2 4 3 figure 7 1 2 3 100 100 100 2 3 100 100 100 1 2 6 3 3 4 5 figure 14 figur...

Page 4: ...6 7 8 ABC A F1 F2 F1 F2 Q1 Q2 B C 3 1 1 ABC I P A1P TOIN DUNIT TOOUT DUNIT TOMULTIUNIT F1 F2 F1 F2 F1 F2 1 2 3 4 5 6 A F1 F2 F1 F2 Q1 Q2 Q1 Q2 B C ABC I P A1P A1P TOIN DUNIT TOOUT DUNIT TOMULTIUNIT T...

Page 5: ...of Q14 16 type 1 13 2 3 4 14 5 6 7 8 9 11 10 12 15 1 2 3 4 5 6 7 8 9 10 13 13 15 16 17 14 11 12 1 6 5 4 2 3 1 2 3 4 5 figure 28 1 2 3 1 5 6 7 3 4 1 2 3 4 11 12 13 14 9 15 10 10 5 6 7 8 9 figure 31 fi...

Page 6: ...r qualified personnel to carry out installation work Do not attempt to install the air conditioner yourself Improper installation may result in water leakage electric shocks or fire Install the air co...

Page 7: ...imum refrigerant charge of a VRVIII system must be below 100kg this to be in accordance with CE requirement EN60335 2 40 standard This means that in case the total maximum refrigerant charge of the sy...

Page 8: ...l 3 Clamps 4 Accessory pipes Note Do not throw away any of the accessories until installation is com plete 2 3 Option accessory To install the outdoor units the following optional parts are also requi...

Page 9: ...to prevent snow from accumu lating on the fins 3 If condensate may drip on downstairs or walkway depending on the floor condition take a measure such as the installation of central drain pan kit sold...

Page 10: ...gen permutation or nitrogen blow when brazing Refer to figure 10 Brazing without performing nitrogen permutation or nitrogen blow into the piping will create large quantities of oxidized film on the i...

Page 11: ...ing piping between outdoor units Refer to the installation manual that comes with the kit when doing this piping work 4 Precautions when connecting piping between outdoor units In case of multi system...

Page 12: ...18 1 Do not install vertically Refer to figure 18 2 Maintain a straight portion of 500 mm or more until the split of the joint without wrapping any onsite piping around this area Over 500 mm of straig...

Page 13: ...r unit 1 8 a a u r s t i i b b a a s t r u b c d e f g h i i c d e f g h j k REFNET Header REFNET Header 1 2 3 4 5 6 1 2 3 4 5 6 7 H2 b r s u t c d e f g h 1 2 3 4 5 6 7 8 8 c d e f g h 1 2 3 4 5 6 7...

Page 14: ...920 x 15 9 19 1 22 2 28 6 34 9 41 3 19 1 25 4 28 6 34 9 54 1 9 5 12 7 15 9 19 1 12 7 15 9 19 1 22 2 Total capacity of indoor units gas pipe liquid pipe standard size max size standard size max size u...

Page 15: ...r ing and earth terminal 7 1 Power circuit safety device and cable requirements A power circuit see the following table must be provided for con nection of the unit This circuit must be protected with...

Page 16: ...be finished simul taneously with the local refrigerant piping and wound with tape field supply as shown in figure 25 Refer to figure 25 1 Liquid pipe 2 Gas pipe 3 Transmission wiring 4 Insulation mat...

Page 17: ...ve A C in figure 28 should be open or closed as shown in the table below Refer to figure 28 1 Gauge manifold 2 Nitrogen 3 Measuring device 4 R410A tank with siphon 5 Vacuum pump 6 Charge hose 7 Liquid...

Page 18: ...of a nut See 7 4 Transmission Wiring Connection Procedure 2 Make sure there is no faulty power wiring or loosing of a nut See 7 5 Power Wiring Connection Procedure 3 Has the insulation of the main pow...

Page 19: ...3 9 12 7 8 1 9 9 18 0 22 0 15 9 13 5 16 5 Hexagonal wrench 6 mm 22 5 27 5 19 1 27 0 33 0 Hexagonal wrench 8 mm 25 4 LED display h OFF i ON j Blinking Uncertain LED display H1P H2P H3P H4P H5P H6P H7P...

Page 20: ...med in recovery or other service modes About re charging of refrigerant When sizes and length of field pipings are certain figure out the re charging amount of refrigerant by calculation method of ref...

Page 21: ...Perform the refrigerant charging operation according to check operation and charge the remaining refrigerant of the additional charging amount For performing the refrigerant charging opera tion the pu...

Page 22: ...cate to open the valve of the refrigerant tank as on the right in approx 6 min after the re start Operation for re charging of refrigerant 1 60 min Contamination prevention is opearted at the same tim...

Page 23: ...t according to the list on the installation manual 1 11 Test operate again after the repair To check operate again press the RETURN button BS3 to turn the LED back to normal indications as procedure 1...

Page 24: ...it are reversed Exchange two of the three phases L1 L2 L3 and connect with the correct phase U3 Check operation has been completed normally Perform the check operation again U1 U4 LC Power is not bein...

Page 25: ...hecks After Test Run Perform the following checks after the test run is complete Record the contents of field setting Record them on the accessory REQUEST FOR THE INDI CATION label And attach the labe...

Page 26: ...results of the calcu lations in steps 1 and 2 above If the result of the above calculation exceeds the maximum con centration level then make similar calculations for the second then third smallest ro...

Page 27: ...3P226891 13Q EM10A040 1012 HT 00_CV_3P226891 13Q fm Page 6 Thursday December 2 2010 1 08 PM...

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