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RXYQ8~18P7W1BR1
VRVIII System air conditioner
4PW44039-1D

Installation manual

14

8.9.

Wiring example for wiring inside unit

See 

figure 26

.

9.

P

IPE

 

INSULATION

After finishing the leak test and vacuum drying, the piping must be
insulated. Take into account the following points:

Make sure to insulate the connection piping and refrigerant
branch kits entirely.

Be sure to insulate liquid and gas piping (for all units).

Use heat resistant polyethylene foam which can withstand a
temperature of 70°C for liquid side piping and polyethylene foam
which can withstand a temperature of 120°C for gas side piping.

Reinforce the insulation on the refrigerant piping according to
the installation environment.

Condensation might form on the surface of the insulation.

If there is a possibility that condensation on the stop valve might
drip down into the indoor unit through gaps in the insulation and
piping because the outdoor unit is located higher than the indoor
unit this must be prevented by sealing up the connections. See

figure 10

.

10. C

HECKING

 

OF

 

UNIT

 

AND

 

INSTALLATION

 

CONDITIONS

Be sure to check the following:

The piping work

1

Make sure piping size is correct.

See 

"6.2. Selection of piping material" on page 5

.

2

Make sure insulation work is done.

See 

"9. Pipe insulation" on page 14

.

3

Make sure there is no faulty refrigerant piping.

See 

"6. Refrigerant piping" on page 4

.

The electrical work

1

Make sure there is no faulty power wiring or loose nuts.

See 

"8. Field wiring" on page 9

.

2

Make sure there is no faulty transmission wiring or loose nuts.

See 

"8. Field wiring" on page 9

.

3

Make sure the insulation resistance of the main power circuit is
not deteriorated.

Using a megatester for 500 

V, check that the insulation

resistance of 2 M

 or more is attained by applying a voltage of

500 V DC between the power terminals and earth. Never use
the megatester for the transmission wiring (between outdoor
and indoor unit, outdoor and COOL/HEAT selector, etc.).

Precautions when laying power wiring

Do not connect wiring of different thicknesses to the
power terminal block. (Slack in the power wiring may
cause abnormal heat.)

When connecting wiring which is the same thickness,
do as shown in the figure below.

For wiring, use the designated power wire and
connect firmly, then secure to prevent outside
pressure being exerted on the terminal board.

Use an appropriate screwdriver for tightening the
terminal screws. A screwdriver with a small head will
strip the head and make proper tightening impossible.

Over-tightening the terminal screws may break them.

See the table below for tightening torque for the
terminal screws.

Recommendations when connecting the ground

When pulling the ground wire out, wire it so that it comes
through the cut out section of the cup washer. (An
improper ground connection may prevent a good ground
from being achieved.) 

(See figure 16)

1

Electric wiring

2

Wiring between units

3

Clamp to the electric box with field supplied clamps.

4

When routing out the power/ground wires from the right side:

5

When routing the remote control cord and inter-unit wiring, secure 
clearance of 50 mm or more from the power wiring. Ensure that 
the power wiring does not contact any heated sections ( 

 ).

6

Clamp to the back of the column support with field supplied 
clamps.

7

When routing out the inter-unit wirings from the opening for piping:

8

When routing out the power/ground wires from the front:

9

When routing out the ground wires from the left side:

10

Grounding wire

11

When wiring, pay attention not to detach the acoustic insulators 
from the compressor.

12

Power supply

13

Fuse

14

Earth leakage breaker

15

Ground wire

16

Outdoor unit

Tightening torque (N•m)

M8 (Power terminal block)

5.5~7.3

M8 (Ground)

M3 (Inter-unit wiring terminal block)

0.8~0.97

Ambient temperature

Humidity

Minimum thickness

30°C

75% to 80% RH

15 mm

>30°C

80 RH

20 mm

1

Gas line stop valve

2

Liquid line stop valve

3

Service port for adding refrigerant

4

Sealing up treatment

5

Insulation

6

Indoor -outdoor interconnection piping

Be sure to insulate local pipes, as touching them can
cause burns.

Summary of Contents for VRVIII RXYQ-PR1

Page 1: ...INSTALLATION MANUAL RXYQ8P7W1BR1 RXYQ10P7W1BR1 RXYQ12P7W1BR1 RXYQ14P7W1BR1 RXYQ16P7W1BR1 RXYQ18P7W1BR1 System air conditioner...

Page 2: ...d 500 mm a 50 mm b 100 mm c 50 mm d 500 mm a 200 mm b 300 mm a 10 mm b 300 mm c 10 mm d 500 mm e 20 mm a 50 mm b 100 mm c 50 mm d 500 mm e 100 mm a 200 mm b 300 mm e 400 mm A B C D A B 3 a 10 mm b 300...

Page 3: ...MULTI UNIT A1P 3 8 3 4 1 5 5 2 2 TO IN D UNIT F1 F2 DS1 1 2 3 4 OFF ON O U T I N F1 F2 P1 P2 A B C A B C 1 DS1 1 2 3 4 OFF ON O U T I N P1 P2 1 2 3 6 5 7 8 9 10 11 1 A 4 4 2 2 2 5 6 3 2 3 1 4 5 6 7 1...

Page 4: ...isesti 14 za p edpokladu e jsou vyu v ny v souladu s na imi pokyny odpov daj n sleduj c m norm m nebo normativn m dokument m 15 u skladu sa slijede im standardom ima ili drugim normativnim dokumentom...

Page 5: ...ujam temperat ra TS TSmin Minim l temperat ra zem spiediena pus L C TSmax Pies tin t temperat ra saska ar maksim lo pie aujamo spiedienu PS M C Dzesin t js N Spiediena dro bas ier ces iestat ana P bar...

Page 6: ...nal heating capacities ranging from 16 0 to 56 5 kW The RXYQ P7 units can be combined with Daikin indoor units for air conditioning purposes and suitable for R410A The present installation manual desc...

Page 7: ...XYQ18 360 585 29 NOTE The table above shows the possible total capacity and number of possible indoor units If the total capacity of the connected indoor units exceeds the capacity of the outdoor unit...

Page 8: ...ake sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals Small animals making contact with electrical parts can cause malfunctions smok...

Page 9: ...ve which can evacuate to 100 7 kPa 5 Torr 755 mm Hg 1 Packaging material 2 Opening large 3 Belt sling 4 Opening small 40x45 5 Protector NOTE Use a belt sling of 20 mm wide that adequately bears the we...

Page 10: ...pressure regulator for the nitrogen released when doing the brazing should be set to 0 02 MPa or less See figure 11 Do not use anti oxidants when brazing the pipe joints Residue can clog pipes and br...

Page 11: ...ns when connecting field piping Perform brazing at the gas stop valve before brazing at the liquid stop valve Add brazing material as shown in the figure Be sure to use the supplied accessory pipes wh...

Page 12: ...utdoor and BP units H2 40 m Between BP and BP units Difference in height Difference in height between BP and BP units H3 15 m Between indoor and indoor units Difference in height Difference in height...

Page 13: ...0 22 2 290 x 420 28 6 12 7 420 x 585 15 9 Between refrigerant branch kit and BP unit Pipe size for direct connection to BP unit must be based on the total capacity of the connected indoor units c d e...

Page 14: ...stop valve Gas side stop valve Performing the airtightness test and vacuum drying Valve A must always be shut Otherwise the refrigerant in the unit will pour out Close Open Open Close Close NOTE Make...

Page 15: ...or discharge M1C M3C R50 R59 Resistor R95 Resistor current limiting S1NPH Pressure sensor high S1NPL Pressure sensor low S1PH S3PH Pressure switch high T1A Current sensor A6P A7P SD1 Safety devices in...

Page 16: ...in the grounding This unit uses an inverter and therefore generates noise which will have to be reduced to avoid interfering with other devices The outer casing of the product may take on an electrica...

Page 17: ...the electric box lid 2 Transmission wiring 3 Pipe opening 4 Conduit 5 Power wiring and ground wiring 6 Cut off the shaded zones before use 7 Through cover 1 Knockout hole 2 Burr 3 If there are any pos...

Page 18: ...res 3 core wire cables are allowable for the cooler heater changeover remote controller only Be sure to keep the power line and transmission line apart from each other Be careful about polarity of the...

Page 19: ...selector etc Precautions when laying power wiring Do not connect wiring of different thicknesses to the power terminal block Slack in the power wiring may cause abnormal heat When connecting wiring w...

Page 20: ...ay only be charged after performing the leak test and the vacuum drying For factory charge refer to the unit name plate NOTE National implementation of EU regulation on certain fluorinated greenhouse...

Page 21: ...ter the unit has stopped Electric shock warning Close the electric box lid before turning on the main power Perform the settings on the circuit board A1P of the outdoor unit and check the LED display...

Page 22: ...display is shown open valve A and close the frontpanel If the frontpanel is left open the system can not operate properly during the refrigerant charging The state of this LED is not important 9 Compl...

Page 23: ...minute x c x x x x w Start up control for the next 2 minutes x c x x x w x Waiting for stable heating conditions for the next 15 minutes according to the system x c x x x w w H1P H2P H3P H4P H5P H6P...

Page 24: ...s a ball point pen to avoid touching live parts Make sure to re attach the inspection cover 1 into the switch box cover 2 after the job is finished WARNING ELECTRIC SHOCK Caution when performing servi...

Page 25: ...adjust the LED indication to the settings as shown below in the field marked 2 Push the button and the setting is defined 1 LED H1 8P 2 Push button switches BS1 BS5 3 Dip switch 1 DS1 1 4 4 Dip switc...

Page 26: ...on of low noise operation state x standard operation factory setting w operation 4 Indication of power consumption limitation setting x standard operation factory setting w operation Possible function...

Page 27: ...ose all front panels except the front panel of the electric box 2 Turn ON the power to all outdoor units and the connected indoor units Be sure to turn on the power 6 hours before operation in order t...

Page 28: ...concentration level of refrigerant gas is not exceeded in the unlikely event of major leak in the system and this in accordance to the local applicable regulations and standards Maximum concentration...

Page 29: ...to revise the system Please consult your supplier 15 DISPOSAL REQUIREMENTS Dismantling of the unit treatment of the refrigerant of oil and of other parts must be done in accordance with relevant local...

Page 30: ...NOTES NOTES...

Page 31: ...26 12 13 14 15 16 5 1 7 10 3 2 9 6 6 6 6 7 4 11 8 6 6 6 6 6 6 7 7 9 8 4 11 6 6 1 10 3 2 6 6 6 6 27 2 1 1 1 2 3 4 4 3N 50 Hz 1 50 Hz 26 27...

Page 32: ...4PW44039 1D Copyright Daikin...

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