Daikin REMQ12P Manual de instalación descargar pdf (Pagina 14)

Installation manual

REMQ8P9 + REMQ10~16P8 + REMHQ12P8Y1B

VRVIII System air conditioner

4PW48463-1A

6.6. Example of connection

Example of connection

(Connection of 8 indoor units)

Branch with refnet joint Branch with refnet joint and refnet header Branch with refnet header

Outdoor units installed

in a multiple outdoor

unit system

(REYQ18~48 +

REYHQ16 +

REYHQ20~24)

Install the joint part ( part in the ﬁgure) of the outdoor unit multi connection piping kit

horizontally with attention to the installation restrictions described in "connecting the

refrigerant piping".

(*) In case of multi combination, interprete the word "outdoor" as "ﬁrst outdoor

branch".

Maximum allowable

length

Between outdoor and indoor units

Actual pipe length

Pipe length between outdoor(*) and indoor units ≤165 m

[Example] unit 8: a+b+c+d+e+s≤165 m [Example] unit 6: a+b+l≤165 m,

unit 8: a+m+n+p≤165 m

[Example] unit 8: a+o≤165 m

Equivalent length

Equivalent pipe length between outdoor(*) and indoor units ≤190 m (Assume equivalent pipe length of the refnet joint to be 0.5 m, of the refnet header to be 1.0 m,

of the BSVQ100 and BSVQ160 to be 4 m and of the BSVQ250 to be 6 m (for calculation purposes)) (See note 1)

Total extension length Total piping length from outdoor(*) to all indoor units ≤1000 m

Between the ﬁrst outdoor unit multi connection piping kit

and outdoor unit (in case of a multiple outdoor unit system)

Actual and equivalent

pipe length

The actual pipe length from the ﬁrst outdoor unit multi connection piping kit to the outdoor unit ≤10 m. (x≤10 m, y≤10 m, z≤10 m)

The equivalent pipe length from the ﬁrst outdoor unit multi connection piping kit to the outdoor unit ≤13 m. (x≤13 m, y≤13 m, z≤13 m)

Allowable height

difference

Between outdoor and indoor units Difference in height between outdoor and indoor units (H1)≤50 m (≤40 m if outdoor unit is located in a lower position).

Between indoor and indoor units Difference in height between adjacent indoor units (H2)≤15 m

Between outdoor and outdoor units Difference in height between adjacent outdoor units (H3)≤5 m

Allowable length after the branch Actual pipe length

Pipe length from ﬁrst refrigerant branch kit (either refnet joint or refnet header) to indoor unit ≤40 m (See note 2)

[Example] unit 8: b+c+d+e+s≤40 m [Example] unit 6: b+l≤40 m, unit 8: m+n+p≤40 m [Example] unit 8: o≤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 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 accordance with the total capacity of all the indoor units connected

below the refnet header.

Note: 250 type indoor unit can not be connected lower than the refnet header.

Outdoor unit

capacity type (Hp)

Refrigerant branch kit name

Indoor

capacity type

Refrigerant branch kit name

3 pipes 2 pipes

8+10 KHRQ23M29T <200 KHRQ23M29H KHRQ22M29H

12~22 KHRQ23M64T 200≤x<290 KHRQ23M29H KHRQ22M29H

≥24 KHRQ23M75T 290≤x<640 KHRQ23M64H KHRQ22M64H

For refnet joints other than the ﬁrst branch, select the proper branch kit model based on the

total capacity index of all indoor units connected after the refrigerant branch.

≥640 KHRQ23M75H KHRQ22M75H

How to choose an outdoor multi connection piping kit (this is required when the

system is a multiple outdoor unit system)

Indoor

capacity type

Refrigerant branch kit name

3 pipes 2 pipes

Choose from the following table in accordance with the number of outdoor units

<200 KHRQ23M20T KHRQ22M20T

Number of

outdoor units

Branch kit name200≤x<290 KHRQ23M29T9 KHRQ22M29T

290≤x<640 KHRQ23M64T KHRQ22M64T 2 BHFQ23P907

≥640 KHRQ23M75T KHRQ22M75T 3 BHFQ23P1357

Example of downstream indoor units [Example]

in case of refnet joint C: indoor units 5+6+7+8

[Example]

in case of refnet joint B: indoor units 7+8,

in case of refnet header: indoor units 1+2+3+4+5+6

[Example]

in case of refnet header: indoor units

1+2+3+4+5+6+7+8

Use the outdoor unit multi connection piping kit that is sold separately

as an option (BHFQ23P907+1357) for the multi installation of outdoor

units. Selection method is as shown in the right table.

ABCDE

abcd

lnp

B1 B2 B3

xy z

mo q r s

4 5 6 7

B1 B2 B3

n p

kl o

2 3 4 5 6 7

B1 B2 B3 B4

hj l

2 3 4 5 6 7

Outdoor unit side (3 pipes) Indoor unit side (2 pipes)

Suction gas pipe Gas pipe

HP/LP gas pipe BS unit

Liquid pipe Liquid pipe

indoor unit refnet header Outdoor unit side (3 pipes)

refnet joint outdoor multi connection piping kit Indoor unit side (2 pipes)

Refrigerant branch kits can only be used with R410A.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 35 36

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Daikin REMQ12P Manual de instalación Pagina 14

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