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Installation manual

26

REYQ8~16P8Y1B

VRVIII System air conditioner

4PW39996-1A

15. C

AUTION

 

FOR

 

REFRIGERANT

 

LEAKS

Introduction

The installer and system specialist shall secure safety against
leakage according to local regulations or standards. The
following standards may be applicable if local regulations are
not available.

This system uses R410A as refrigerant. R410A itself is an entirely
safe non-toxic, non-combustible refrigerant. Nevertheless care must
be taken to ensure that air conditioning facilities are installed in a
room which is sufficiently large. This assures that the maximum
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 level

The maximum charge of refrigerant and the calculation of the
maximum concentration of refrigerant is directly related to the
humanly occupied space in to which it could leak.

The unit of measurement of the concentration is kg/m

3

 (the weight in

kg of the refrigerant gas in 1 m

3

 volume of the occupied space).

Compliance to the local applicable regulations and standards for the
maximum allowable concentration level is required.

According to the appropriate European Standard, the maximum
allowed concentration level of refrigerant to a humanly space for

R410A is limited to 0.44 kg/m

3

.

Pay special attention to places, such as a basements, etc. where
refrigerant can stay, since refrigerant is 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 the amount of refrigerant (kg) charged to each system
separately.

2

Calculate the smallest room volume (m

3

)

In a case such 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 of the above calculation exceeds the maximum
concentration level then make similar calculations for the second
then third smallest room and so until the result falls short of the
maximum concentration.

4

Dealing with the situations where the result exceeds the
maximum concentration level.

Where the installation of a facility results in a concentration in
excess of the maximum concentration level then it will be
necessary to revise the system.
Please consult your supplier.

16. D

ISPOSAL

 

REQUIREMENTS

Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with relevant local and national
legislation.

1

direction of the refrigerant flow

2

room where refrigerant leak has occurred (outflow of all the 
refrigerant from the system)

amount of 
refrigerant in a 
single unit system 
(amount of 
refrigerant with 
which the system 
is charged before 
leaving the factory)

+

additional charging 
amount (amount of 
refrigerant added 
locally in 
accordance with 
the length or 
diameter of the 
refrigerant piping)

=

total amount of 
refrigerant (kg) in 
the system

NOTE

Where a single refrigerant facility is divided into
2 entirely independent refrigerant systems, use the
amount of refrigerant with which each separate system
is charged.

2

1

A.

Where there are no smaller room divisions

B.

Where there is a room division but there is an
opening between the rooms sufficiently large to
permit a free flow of air back and forth.

1

opening between rooms

2

partition
(Where there is an opening without a door or where there 
are openings above and below the door which are each 
equivalent in size to 0.15% or more of the floor area.)

total volume of 
refrigerant in the 
refrigerant system

size (m

3

) of smallest 

room in which there is 
an indoor unit installed

maximum concentration level 
(kg/m

3

)

1

2

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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