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R REMQ10~16P8 + REMHQ12P8Y1B

VRVIII System air conditioner

4PW48463-1A

Installation manual

16

Outside unit

8.8.

Field line connection: power wiring

The power cord must be clamped to the plastic bracket using field
supplied clamp material.

The green and yellow striped wrapped wires must be used for
grounding. 

(See figure 19)

Be sure to follow the limits below. If the unit-to-unit
cables are beyond these limits, it may result in
malfunction of transmission.

-

Maximum wiring length:

1000 m

-

Total wiring length:

2000 m

-

Maximum interunit wiring length 
between outdoor units in the same 
system:

30 m

-

Maximum number of branches:

16

Maximum number of independent interconnectable
systems : 

10.

Up to 16 branches are possible for unit-to unit cabling.
No branching is allowed after branching. 

(See figure 15)

Never connect the power supply to transmission
wiring terminal block. Otherwise the entire system
may break down.

Never connect 400 V to the terminal block of the
interconnecting wiring. Doing so will break the entire
system.
-

The wiring from the indoor units must be 
connected to the F1/F2 (In-Out) terminals on the 
PC board in the outdoor unit.

-

After installing the interconnecting wires inside the 
unit, wrap them along with the on-site refrigerant 
pipes using finishing tape, as shown in 

figure 11

.

For the above wiring, always use vinyl cords with 0.75
to 1.25 mm

2

 sheath or cables (2-core wires).

Be sure to keep the power line and transmission line
apart from each other.

Be careful about polarity of the transmission line.

Make sure that the transmission line is clamped as
shown in 

figure 20

.

Check that wiring lines do not make contact with
refrigerant piping.

Firmly close the lid and arrange the electrical wires as
to prevent the lid or other parts from coming loose.

When you do not use a wire conduit, be sure to
protect the wires with vinyl tubes etc, to prevent the
edge of the knock-out hole from cutting the wires.

(TO OUT/D UNIT F1-F2)

1

Outdoor unit

2

Indoor unit

3

Main line

4

Branch line 1

5

No branch is allowed after branch

A

Transmission wiring between outdoor unit and indoor 
unit(s)

B

Transmission wiring between outdoor units

1

Liquid pipe

2

HP/LP gas pipe

3

Finishing tape

4

Suction gas pipe

5

Transmission wiring

6

Insulation material

1

Power supply (380~415 V, 3N~ 50 Hz)

2

Earth leakage breaker

3

Fuse

4

Grounding wire

5

Power supply terminal block

6

Connect each power wire
RED to L1, WHT to L2, BLK to L3 and BLU to N

7

Ground wire (GRN/YLW)

8

Clamp the power wire to the plastic bracket using a field supplied 
clamp to prevent external force being applied to the terminal. 

9

Clamp (field supply)

10

Cup washer

11

When connecting the earth wire, it is recommended to perform 
curling.

When routing ground wires, secure clearance of
50 mm or more away from compressor lead wires.
Failure to observe this instruction properly may
adversely effect correct operation of other units
connected to the same ground.

When connecting the power supply cord, the earth
connection must be made before the current-carrying
connections are established. When disconnecting the
power supply cord, the current-carrying connections
must be separated before the earth connection is.
Length of the conductors between the power supply
cord anchorage and the terminal block itself must be
such that the current-carrying conductors are
tautened before the earthing conductor is in case the
power supply cord is pulled loose from the cord
anchorage.

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 19)

Tightening torque (N•m)

M8 (Power terminal block)

5.5~7.3

M8 (Ground)

Summary of Contents for REMQ8P9Y1B

Page 1: ...INSTALLATION MANUAL REMQ8P9Y1B REMQ10P8Y1B REM H Q12P8Y1B REMQ14P8Y1B REMQ16P8Y1B System air conditioner...

Page 2: ...mm 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 10 mm b 300 mm c 10 mm...

Page 3: ...500 mm 1 1 1 A B 2 2 2 4 5 3 8 F1 F2 F1 F2 Q1 Q2 F1 F1 F2 F2 Q1Q2 7 TOIN DUNIT TOOUT DUNIT TOMULTIUNIT A1P Q1 Q2 A1P Q1 Q2 A1P 1 2 2 3 4 5 6 8 10 10 9 9 REMQ8 12 REMQ14 16 REMHQ12 1 2 3 4 1 5 6 7 8 F...

Page 4: ...uz uvjet da se oni koriste u skladu s na im uputama 16 megfelelnek az al bbi szabv ny ok nak vagy egy b ir nyad dokumentum ok nak ha azokat el r s szerint haszn lj k 17 spe niaj wymogi nast puj cych...

Page 5: ...ll stysl mp tila M C Kylm aine N Varmuuspainelaitteen asetus P bar Valmistusnumero ja valmistusvuosi katso mallin nimikilpi 14 Maxim ln p pustn tlak PS K bar Minim ln maxim ln p pustn teplota TS TSmin...

Page 6: ...75 kW For changing the refrigerant flow to indoor units the REYQ P system can be combined with BS units of the types BSVQ100P BSVQ160P and BSVQ250P only Other BS unit types will cause malfunctions whe...

Page 7: ...REYQ48 REMQ16 REMQ16 REMQ16 600 1560 Standard combinations of outdoor units Total capacity of indoor units REYHQ16 REMQ8 REMQ8 200 520 REYHQ20 REMQ8 REMHQ12 250 650 REYHQ22 REMQ10 REMHQ12 275 715 REY...

Page 8: ...owable safety limits in the event of a refrigerant leak 11 To prevent dripping water to form a puddle underneath the unit install a drain pan available as option kit 12 The equipment is not intended f...

Page 9: ...The height of the foundation must at least be 150 mm from the floor The unit must be installed on a solid longitudinal foundation steelbeam frame or concrete and make sure the base under the unit is...

Page 10: ...piping must be installed by a licensed refrigeration technician and must comply with relevant local and national regulations Caution to be taken when brazing refrigerant piping Do not use flux when b...

Page 11: ...lves are fully closed 2 Connect a charge hose to service ports of all stop valves 3 Recover gas and oil from the pinched piping by using a recovery unit 4 When all gas and oil is recovered from the pi...

Page 12: ...ns The piping between the outdoor units must be routed level or slightly upward to avoid the risk of oil retention into the piping side Pattern 1 Pattern 2 Prohibited patterns change to pattern 1 or 2...

Page 13: ...ation may lead to malfunction of the outdoor unit 5 Piping length restrictions Make sure to perform the piping installation within the range of the maximum allowable pipe length allowable level differ...

Page 14: ...40 m Outdoor unit multi connection piping kit and refrigerant branch kit selection How to select the refnet joint When using refnet joints at the first branch counted from the outdoor unit side choose...

Page 15: ...of the connected outdoor unit Suction gas pipe Liquid pipe 20 25 32 40 50 12 7 6 4 Outdoor unit capacity type Hp Piping outer diameter size mm 63 80 100 125 15 9 9 5 Suction gas pipe HP LP gas pipe Li...

Page 16: ...ncreased to 90 m Size up of the main suction gas pipe may affect a good oil return to the outdoor unit due to influence of the HP LP gas pipe indoor unit 8 b c d e f g p 90 m increase the pipe size of...

Page 17: ...fan PS Switching power supply A1P A3P Q1DI Earth leakage breaker field supply Q1RP Phase reversal detection circuit R1T Thermistor air A1P fin A3P R3T R9T Thermistor H E gas H E de icer sub cool H E g...

Page 18: ...for connection wiring to indoor outdoor transmission F1 F2 outdoor outdoor transmission F1 F2 outdoor multi transmission Q1 Q2 and on how to use BS1 BS5 and DS1 DS2 switch Do not operate the unit by s...

Page 19: ...eans that an earth leakage breaker capable of handling high frequency electrical noise must be used in order to prevent malfunctioning of the earth leakage breaker itself Earth leakage breakers that a...

Page 20: ...he back of the electric box lid 2 Power wiring and ground wiring between outdoor units inside conduit When the wiring is routed out through the lateral panel 3 Transmission wiring 4 Pipe opening 5 Con...

Page 21: ...nsmission wiring between outdoor units 1 Liquid pipe 2 HP LP gas pipe 3 Finishing tape 4 Suction gas pipe 5 Transmission wiring 6 Insulation material 1 Power supply 380 415 V 3N 50 Hz 2 Earth leakage...

Page 22: ...igerant follow the procedure as described in this chapter 11 1 Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Do...

Page 23: ...its that are active can be read from the LED display in the Monitor Mode procedure below NOTE National implementation of EU regulation on certain fluorinated greenhouse gases may require to provide th...

Page 24: ...button to return to step 1 setting mode 1 H1P x OFF Adding refrigerant using the automatic refrigerant charging function is recommended When charging a system charging over the permissible quantity ca...

Page 25: ...BS unit indoor unit 13 Stop valve 14 Service port 15 Field piping 16 Refrigerant flow when pre charging through the liquid stop valve service port refer to step 3 on page 19 17 Refrigerant flow when...

Page 26: ...to confirm that charging is completed Record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back side of the front panel Perform the p...

Page 27: ...c x x w x x x x w Slave unit 1 a c x x x x x x x c Slave unit 2 a c x x x x x x x x Error code P8 recharge operation Close valve A immediately and press the TEST OPERATION button once The operation w...

Page 28: ...rocedure from step 2 onwards Make sure to open the stop valves after charging the refrigerant Operating with the stop valves closed will damage the compressor BS1 MODE BS1 MODE WARNING ELECTRIC SHOCK...

Page 29: ...tch which is located on the outdoor unit PCB A1P The figure shows state of the LED indications when the unit is shipped from the factory Check operation procedure 1 Turn the power on for the outdoor u...

Page 30: ...state x normal w abnormal c under preparation or under test operation 2 Indication of low noise operation state x standard operation factory setting w operation 3 Indication of power consumption limi...

Page 31: ...arts During the test operation the refrigerant running sound or the magnetic sound of a solenoid valve may become loud and the LED display may change but these are not mal functions During the test op...

Page 32: ...gerant charge hose to the refrigerant charging port for additionaly charging 4 When the unit is not operating push the button until the additional refrigerant charging operation function A in setting...

Page 33: ...heavier than air Procedure for checking maximum concentration Check the maximum concentration level in accordance with steps 1 to 4 below and take whatever action is necessary to comply 1 Calculate th...

Page 34: ...P8 REMHQ12P8Y1B VRVIII System air conditioner 4PW48463 1A 16 DISPOSAL REQUIREMENTS Dismantling of the unit treatment of the refrigerant of oil and of other parts must be done in accordance with releva...

Page 35: ...3 2 6 6 6 6 23 18 9 8 1 2 4 3 5 13 14 15 10 7 12 19 2 1 24 6 11 16 17 15 6 5 10 11 12 7 4 9 16 17 18 3 8 13 14 2 2 1 1 9 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6...

Page 36: ...4PW48463 1A Copyright Daikin...

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