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REYQ8~16P8Y1B
VRVIII System air conditioner
4PW39996-1A

Installation manual

11

8.3.

Power circuit and cable requirements

A power circuit (see table below) must be provided for connection of
the unit. This circuit must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage breaker.

When using residual current operated circuit breakers, be sure to use
a high-speed type 300 mA rated residual operating current.

Be sure to install a main switch for the complete system.

8.4.

General cautions 

Make sure to connect the power source wire to the power
source terminal block and to clamp it as shown in 

figure 24

 and

described in chapter 

"8.8. Field line connection: power wiring"

on page 13

.

For conditional connections, refer to the Technical Data.

As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause a capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.

Keep power imbalance within 2% of the supply rating.

Large imbalance will shorten the life of the smoothing
capacitor.

As a protective measure, the product will stop operating and
an error indication will be made, when power imbalance
exceeds 4% of the supply rating.

Follow the "electrical wiring diagram" supplied with the unit when
carrying out any electrical wiring.

Only proceed with wiring work after all power is shut off.

Always ground wires. (In accordance with national regulations of
the pertinent country.)

Do not connect the ground wire to gas pipes, sewage pipes,
lightning rods or telephone ground wires. This may cause
electric shock.

Combustion gas pipes: can explode or catch fire if there is a
gas leak.

Sewage pipes: no grounding effect is possible if hard plastic
piping is used.

Telephone ground wires and lightning rods: dangerous when
struck by lightning due to abnormal rise in electrical potential
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 electrical charge
due to leaked electrical current, which will have to be discharged
with the grounding.

Be sure to install an earth leakage breaker. (One that can
handle high-frequency electrical noise.)
(This unit uses an inverter, which means 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 are especially designed for
protecting ground-faults must be used in conjunction with main
switch and fuse for use with wiring.

Never connect the power supply in reversed phase.
The unit can not operate normally in reversed phase. If you
connect in reversed phase, replace two of the three phases.

This unit has a reverse phase detection circuit. (If it is activated,
only operate the unit after correcting the wiring.)

Power supply wires must be attached securely.

If the power supply has a missing or wrong N-phase, equipment
will break down.

Make sure that all wiring is secure, the specified wires are used,
and no external forces act on the terminal connection or wires.

Improper connections or installation may result in fire.

When wiring the power supply and connecting the remote
controller wiring and transmission wiring, position the wires so
that the control box lid can be securely fastened.
Improper positioning of the control box lid may result in electric
shocks, fire or overheating of the terminals.

8.5.

System examples

(See figure 15)

Phase and 

frequency

Voltage

Minimum 

circuit 

ampere

Recommended

fuses

Transmission 

line section

REYQ8

3 N~50 Hz

380~415 V

17.1 A

20 A

0.75~1.25 mm

2

REYQ10

3 N~50 Hz

380~415 V

22.1 A

25 A

0.75~1.25 mm

2

REYQ12

3 N~50 Hz

380~415 V

22.3 A

25 A

0.75~1.25 mm

2

REYQ14

3 N~50 Hz

380~415 V

32.8 A

40 A

0.75~1.25 mm

2

REYQ16

3 N~50 Hz

380~415 V

33.0 A

40 A

0.75~1.25 mm

2

NOTE

Select the power supply cable in accordance with
relevant local and national regulations.

Wire size must comply with the applicable local
and national code.

Specifications for local wiring power cord and
branch wiring are in compliance with IEC60245.

WIRE TYPE H05VV(*)
*Only in protected pipes (use H07RN-F when
protected pipes are not used).

1

Field power supply

5

Outdoor unit

2

Main switch

6

Cool/heat selector

3

Earth leakage circuit 
breaker

7

Remote controller

8

Indoor unit

4

Fuse

9

BS unit

Power supply wiring (sheathed cable) (380~415 V)

Transmission wiring (sheathed cable) (16 V)

Summary of Contents for VRVIII REYQ-P8

Page 1: ...INSTALLATION MANUAL REYQ8P8Y1B REYQ10P8Y1B REYQ12P8Y1B REYQ14P8Y1B REYQ16P8Y1B System air conditioner...

Page 2: ...m e 100 mm f 500 mm 4 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 1500 500 13 2 1 6 3 4 6 5 6 9 10 7 8 2 1 A B C 5 3 2 1 6 4 3 4 2 b a c d A C B D a e b d e A...

Page 3: ...jeidemme mukaisesti 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 normativni...

Page 4: ...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 5: ...ging from 25 0 to 50 0 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 ca...

Page 6: ...he Engineering Data Book Outdoor unit Total capacity of indoor units REYQ8 100 260 REYQ10 125 325 REYQ12 150 390 REYQ14 175 455 REYQ16 200 520 NOTE If the total capacity of the connected indoor units...

Page 7: ...nt concentration from exceeding allowable 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...

Page 8: ...foundation dimension 7 Distance between foundation bolt holes X Not allowed O Allowed units mm Prepare a water drainage channel around the foundation to drain waste water from around the unit If the...

Page 9: ...the pipe size nearest to the required size use the suitable adapters for the change over from inch to mm pipes field supply 6 3 Pipe connection Be sure to perform a nitrogen blow when brazing and to r...

Page 10: ...the system Great caution is needed when passing copper tubes through walls Block all gaps in the holes for passing out piping and wiring using sealing material field supply The capacity of the unit wi...

Page 11: ...outdoor unit side choose from the following table in accordance with the capacity of the outdoor unit example refnet joint A How to select the refnet header Choose from the following table in accordan...

Page 12: ...igerant branch kit to indoor units is 40 m or less however it can be extended up to 90 m if all the following conditions are fulfilled Required conditions Example drawings It is necessary to increase...

Page 13: ...Valve B 13 Valve C 14 Outdoor unit 15 To BS unit or indoor unit 16 Stop valve 17 Service port 18 Field piping 19 Gas flow NOTE Make sure to perform leak test and vacuum drying using the service ports...

Page 14: ...2 liquid 2 H E liquid 2 R10 Resistor current sensor R31T R32T Thermistor discharge M1C M2C R50 R59 Resistor R90 Resistor current sensor R95 Resistor current limiting S1NPH Pressure sensor high S1NPL...

Page 15: ...to leaked electrical current which will have to be discharged with the grounding Be sure to install an earth leakage breaker One that can handle high frequency electrical noise This unit uses an inve...

Page 16: ...of the transmission wiring terminals 1 Electric wiring diagram Printed on the back of the electric component box lid 2 Power wiring and ground wiring inside conduit When the wiring is routed out throu...

Page 17: ...iquid pipe 2 High pressure low pressure gas pipe 3 Finishing tape 4 Suction gas pipe 5 Transmission wiring 6 Insulation material 1 Power supply 380 415 V 3 N 50 Hz 2 Earth leakage breaker 3 Fuse 4 Gro...

Page 18: ...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 nu...

Page 19: ...t cannot be charged until all field wiring and field piping has been completed Refrigerant may only be charged after performing the leak test and the vacuum drying Charge the liquid refrigerant with t...

Page 20: ...tem charging over the permissible quantity can cause liquid hammer Always use protective gloves and protect your eyes when charging refrigerant When the refrigerant charging procedure is done or when...

Page 21: ...indoor temperature The unit will automatically select the cooling mode or heating mode for charging Outdoor temperature 0 C DB 43 C DB Indoor temperature 10 C DB 32 C DB Total indoor unit capacity 80...

Page 22: ...and may cause overcharging 7 Ready Press the button once within 5 minutes If the button is not pushed within 5 minutes P2 will be displayed on the remote controller Refer to 3 Remote controller malfun...

Page 23: ...e valve A and remove the refrigerant tank immediately after finishing the refrigerant charge operation The refrigerant charge port of these units have electric expansion valves that will close automat...

Page 24: ...x w w 20 95 x 100 w x w x w x x 21 100 x w x w x w x w NOTE If you get confused in the middle of the input process press the button to return to setting mode 1 initial state The H1P LED is off x Resum...

Page 25: ...tons LED state Throughout the manual the state of the LEDs is indicated as follows Setting the push button switch BS1 5 Function of the push button switch which is located on the outdoor unit PCB A1P...

Page 26: ...ormal 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 limitation set...

Page 27: ...seconds The H1P LED is on w Perform following steps 1 Press the button 3 times 2 Press the button once to confirm 3 Press the button in order to change the LED display to the following display 4 Press...

Page 28: ...iping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine Insufficient refrigerant E4 F3 Check if the additional refrigerant cha...

Page 29: ...pipe stop valve service port with the unit not operating refer to Pre charging on page 17 make sure to charge the remaining charging quantity using the following procedure 1 Turn the power of the ind...

Page 30: ...as the following calculate the volume of A B as a single room or as the smallest room 3 Calculating the refrigerant density using the results of the calculations in steps 1 and 2 above If the result o...

Page 31: ...N D UNIT TO OUT D UNIT TO IN D UNIT TO OUT D UNIT F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 8 7 7 6 6 3 5 6 13 12 1 1 2 3 4 5 3 4 7 8 2 9 6 4 1 2 5 7 7 8 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...

Page 32: ...4PW39996 1A Copyright Daikin...

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