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EMRQ8~16ABY1

Daikin Altherma outdoor unit

4P501819-1 – 2017.08

Installation manual

12

9.3.

Selection of refrigerant branch kits

Refrigerant refnets

When using refnet joints at the first branch counted from the
outdoor unit side, choose from the following table in accordance
with the capacity of the outdoor unit (example: refnet joint a)

For refnets joints other than the first branch (example refnet
joint b), select the proper branch kit model based on the total
capacity index of all indoor units connected after the refrigerant
branch.

Concerning refnet headers, choose from the following table in
accordance with the total capacity of all the indoor units
connected below the refnet header:

9.4.

System piping limitations

Piping length restrictions

Make sure to perform the piping installation within the range of the
maximum allowable pipe length, allowable level difference and
allowable length after branching as indicated below:

Maximum allowable lengths

Actual pipe length between outdoor and indoor unit 

100 m

Example 1: a+b+c+d+e

100 m

Example 2: a+f+h

100 m

Example 3: a+f

100 m

Equivalent piping length between indoor and outdoor units 

120 m

(equivalent pipe length of refnet to be taken 0.5 m and for header
1.0 m) 

Total piping length from outdoor to all indoor units 

300 m

Pipe length from first branch kit (either refnet joint or refnet header) to
indoor unit 

40 m

[Example 1]: unit 5: b+c+d+e

40 m

[Example 2]: unit 3: b+e

40 m, unit 5: f+h

40 m

[Example 3]: unit 5: f

40 m

Maximum allowable height difference

Difference in height between outdoor and indoor units H1

40 m

Difference in height between lowest and heighest indoor unit
H2

15 m

Refrigerant branch kit name

Outdoor unit

capacity type (Hp)

2 pipes

8+10

KHRQ22M29T9

12~16

KHRQ22M64T

Refrigerant branch kit name

Indoor unit

capacity index

2 pipes

<200

KHRQ22M20T

200

x<290

KHRQ22M29T

290

x<520

KHRQ22M64T

Refrigerant branch kit name

Indoor unit

capacity index

2 pipes

<200

KHRQ22M29H

200

x<290

KHRQ22M29H

290

x<520

KHRQ22M64H

NOTE

Refrigerant branch kits can only be used with R410A.

Example 1: Branch with refnet joint

Example 2: Branch with refnet joint and refnet header

Example 3: Branch with refnet header

a

b

c

d

e

H1

A

B

C

D

1

2

3

4

5

H2

f

g

h

i

H1

H2

a

f

b

c

d

e

h

g

4

5

A

B

1

2

3

a

H1

b

c

d

1

2

3

e

4

f

5

H2

NOTE

When the equivalent pipe length between outdoor and
indoor units is 90 m or more, the size of the main liquid
pipe must be increased. Never increase discharge gas
pipe sizes.

Depending on the length of the piping, the capacity
may drop, but even in such a case it is possible to
increase the size of the main liquid pipe.

Make sure to perform the piping installation within the
range of the maximum allowable pipe length, allowable
level difference and allowable length after branching as
indicated above.

HP

Liquid Ø (mm)

8+10

9.5 

 12.7

12~16

12.7 

 15.9

4PEN501819-1.book  Page 12  Wednesday, September 13, 2017  12:52 PM

Summary of Contents for EMRQ8ABY1

Page 1: ...INSTALLATION MANUAL EMRQ8ABY1 EMRQ10ABY1 EMRQ12ABY1 EMRQ14ABY1 EMRQ16ABY1 Daikin Altherma outdoor unit 4PEN501819 1 book Page 1 Wednesday September 13 2017 12 52 PM...

Page 2: ...vlastn zodpovednos e zariadenie na ktor sa vz ahuje toto vyhl senie 25 w tamamen kendi sorumlulu unda olmak zere bu bildirinin ilgili oldu u donan m n n a a daki gibi oldu unu beyan eder 01 as set ou...

Page 3: ...aksim l pie aujam 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 ies...

Page 4: ...uming after electrical installation is done on any indoor or outdoor unit 17 General guidelines 16 Set up 17 Leak test 18 Vacuum drying 18 11 Pipe insulation 18 12 Electrical wiring work 19 12 1 Preca...

Page 5: ...on Improper installation or attachment of equipment or accessories could result in electric shock short circuit leaks fire or other damage to the equipment Be sure only to use accessories and optional...

Page 6: ...ing accessories are supplied with the unit 1 EKHBRD connection is possible for EKHBRD_ABX and EKHBRD_AC Connection is NOT possible for EKHBRD_AA or EKHBRD_AB models For more details see technical data...

Page 7: ...ectrical component box cover as follows For service purposes the push buttons on the switch box PCB need to be accessed To access these push buttons the electrical component box cover does not need to...

Page 8: ...16 9 Electronic expansion valve subcooling Y2E Y5E 3 Heat exchanger 10 Electronic expansion valve charge Y4E 4 Fan 11 4 way valve heat exchanger Y2S Y9S 5 Fan motor M1F M2F 12 4 way valve pipe Y8S 6...

Page 9: ...field wiring with cable ties to the switch box to ensure strain relief 4 Magnetic contactor K2M 5 Current sensor PCB 2 1 4 5 2 3 3 3 3 3 3 3 3 1 1 Main PCB 2 Sub 1 PCB 3 Terminal block X1M Main termi...

Page 10: ...to leak Locations where a mineral oil mist spray or vapour may be present in the atmosphere Plastic parts may deteriorate and fall off or cause water leakage Locations where equipment that produces el...

Page 11: ...and snow install a baffle plate on the air side of the outdoor unit In heavy snowfall areas it is very important to select an installation site where the snow will not affect the unit If lateral snow...

Page 12: ...nit take into account the following 1 Fragile handle the unit with care Keep the unit upright in order to avoid compressor damage 2 Choose on beforehand the path along which the unit is to be brought...

Page 13: ...m above the foundation surface CAUTION To avoid injury do not touch the air inlet or aluminium fins of the unit WARNING Tear apart and throw away plastic packaging bags so that children will not play...

Page 14: ...case the required pipe sizes inch sizes are not available it is also allowed to use other diameters mm sizes taken the following into account select the pipe size nearest to the required size use the...

Page 15: ...net header to indoor unit 40 m Example 1 unit 5 b c d e 40 m Example 2 unit 3 b e 40 m unit 5 f h 40 m Example 3 unit 5 f 40 m Maximum allowable height difference Difference in height between outdoor...

Page 16: ...An oxidized film adversely affects valves and compressors in the refrigerating system and prevents proper operation The nitrogen pressure should be set to 0 02 MPa i e just enough so it can be felt o...

Page 17: ...event rusting When passing electrical wiring through the knock out holes wrap the wiring with protective tape to prevent damage as shown above 3x 1 2 3 NOTE Any gas or oil remaining inside the stop va...

Page 18: ...are the responsibility of the installer field piping 1 Pinched piping 2 Stop valve 3 Service port 4 Point of melting the brazing metal cut pipe off just above this brazing or marking point Never remov...

Page 19: ...valve After handling the service port make sure to tighten the service port cover securely For the tightening torque refer to the table below Check for refrigerant leaks after tightening the service...

Page 20: ...being present in the refrigerant piping for example rainwater may have entered the piping first carry out the vacuum drying procedure below until all moisture has been removed and consider the install...

Page 21: ...branch kits entirely Be sure to insulate liquid and discharge piping for all units Use heat resistant polyethylene foam which can withstand a temperature of 70 C for liquid piping and polyethylene fo...

Page 22: ...t operation If there exists the possibility of reversed phase after a momentary black out and the power goes on and off while the product is operating attach a reversed phase protection circuit locall...

Page 23: ...tem overview of field wiring Field wiring consists out of power supply always including earth and indoor outdoor communication transmission wiring 12 4 Requirements The power supply must be protected...

Page 24: ...sion wiring Care should be taken for connecting the wires to the terminal block 1 Power supply inside a conduit 2 Conduit 3 Power supply 4 Cut off the shaded zones before usage 5 Through hole cover 1...

Page 25: ...en connecting the power supply the earth connection must be made before the current carrying connections are established When disconnecting the power supply the current carrying connections must be se...

Page 26: ...nhouse gases label peal off the applicable language and stick it on top of 1 2 Factory refrigerant charge see unit name plate 3 Additional refrigerant amount charged 4 Total refrigerant charge 5 Green...

Page 27: ...further explanation on how to do the necessary settings 6 Push the BS1 MODE button for 5 sec the H1P LED is on w 7 Push the BS2 SET button 20 times until following LED combination is reached 8 Push th...

Page 28: ...liquid and discharge side The suction stop valve should remain closed at all times 10 Damaged equipment Check the inside of the unit on damaged components or squeezed pipes 11 Refrigerant leak Check...

Page 29: ...shing the BS3 RETURN button defines the setting Finally when pushing the BS3 RETURN button again the operation starts according to the setting Pushing BS1 MODE button will get you back to the initial...

Page 30: ...ralized control will display on the remote controller It may take 10 minutes to bring the state of the refrigerant uniform before the compressor starts During the test operation the refrigerant runnin...

Page 31: ...ge has been finished correctly Recalculate the required amount of refrigerant from the piping length and add an adequate amount of refrigerant In case the test operation was interrupted or the unit wa...

Page 32: ...7 1 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...

Page 33: ...t of the refrigerant of oil and of other parts must be done in accordance with relevant local and national legislation 19 UNIT SPECIFICATIONS Technical specifications Electrical specifications amount...

Page 34: ...4PEN501819 1 book Page 1 Wednesday September 13 2017 12 52 PM...

Page 35: ...4PEN501819 1 book Page 2 Wednesday September 13 2017 12 52 PM...

Page 36: ...4P501819 1 2017 08 Copyright 2017 Daikin 4P501819 1 0000000M 4PEN501819 1 book Page 1 Wednesday September 13 2017 12 52 PM...

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