Daikin REMQ12P Installationshandbuch PDF herunterladen (Seite 15)

REMQ8P9 + REMQ10~16P8 + REMHQ12P8Y1B

VRVIII System air conditioner

4PW48463-1A

Installation manual

Pipe size selection

For an outdoor unit multi installation (REYQ18~48P +

REYHQ16~24), select the pipe size in accordance with the

following ﬁgure.

A. Piping between outdoor unit and refrigerant branch kit

B. Piping between outdoor unit multi connection piping units

Choose from the following table in accordance with the outdoor unit total capacity type, connected

downstream.

E. Piping between refrigerant branch kit and BS unit

Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit.

Choose from the following table in accordance with the indoor unit total capacity type, connected

downstream.

Outdoor unit

capacity type (Hp)

Piping outer diameter size (mm)

Indoor unit

capacity type

Piping outer diameter size (mm)

Suction gas pipe HP/LP gas pipe Liquid pipe Suction gas pipe HP/LP gas pipe Liquid pipe

8 19.1 15.9 9.5 <150 15.9 12.7 9.5

10 22.2 19.1 9.5 150≤x<200 19.1 15.9 9.5

12 28.6 19.1 12.7 200≤x<290 22.2 19.1 9.5

14+16 28.6 22.2 12.7 290≤x<420 28.6 19.1 12.7

18 28.6 22.2 15.9 420≤x<640 28.6 28.6 15.9

20+22 28.6 28.6 15.9 640≤x<920 34.9 28.6 19.1

24 34.9 28.6 15.9 ≥920 41.3 28.6 19.1

26~34 34.9 28.6 19.1

36 41.3 28.6 19.1 F. Piping between refrigerant branch kit or BS unit and indoor unit

Choose from the following table in accordance with the capacity type of the connected indoor unit.

38~48 41.3 34.9 19.1

Indoor unit

capacity type

Piping outer diameter size (mm)

C. Piping between outdoor unit multi connection piping kit and outdoor unit

Choose from the following table in accordance with the capacity type 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 Liquid pipe 200 19.1 9.5

8+10 22.2 19.1 9.5 250 22.2 9.5

12 28.6 19.1 12.7

14+16 28.6 22.2 12.7 D. Equalizer piping (outdoor units only)

Piping outer diameter size (mm) 19.1

How to calculate the additional refrigerant to be charged

Additional refrigerant to be charged R (kg)

R should be rounded off in units of 0.1 kg

Example for refrigerant branch using refnet joint and refnet header for

REYQ34. REYQ34 = REMQ8+REMQ10+REMQ16, the indoor unit

connection ratio = 120% and the piping lengths are as below.

C C

The refrigerant charge of the system must be less than

100 kg. This means that in case the calculated

refrigerant charge is equal to or more than 95 kg you

must divide your multiple outdoor system into smaller

independent systems, each containing less than 95 kg

refrigerant charge.

For factory charge, refer to the unit name plate.

R =

REYQ

18+20 Hp

22+24 Hp

26 Hp

28+30 Hp

32~40 Hp

42 Hp

44+46 Hp

48 Hp

16~32 Hp

34~48 Hp

>100%

≤130%

0.5 kg

>100%

≤120%

0.5 kg

>120%

≤130%

1.0 kg

[(X1 x Ø22.2) x0.37] + [(X2 x Ø19.1) x0.26] +

[(X

3 x Ø15.9) x0.18] + [(X4 x Ø12.7) x0.12] +

[(X

5 x Ø9.5) x0.059] + [(X6 x Ø6.4) x0.022]

+ A + Bx 1.02

REY(H)Q

1.0 kg

1.5 kg

2.0 kg

2.5 kg

3.0 kg

3.5 kg

4.0 kg

4.5 kg

REYHQ

16 Hp

20 Hp

22+24 Hp

1.0 kg

1.5 kg

2.0 kg

X1...6 = Total length (m) of liquid piping size at Øa

A = Weight according to table A

B = Weight according to table B in function of indoor unit connection ratio

R = [ [50x0.26]+[1x0.18]+[3x0.12]+[156x0.059]+[20x0.022] ]x1.02+3.0+0.5

a : Ø19.1x30 m

b : Ø19.1x20 m

c : Ø9.5x10 m

f : Ø9.5x10 m

g : Ø9.5x10 m

h : Ø9.5x10 m

k : Ø9.5x20 m

l : Ø9.5x20 m

p : Ø6.4x10 m

r : 12.7x3 m

m: Ø9.5x20 m s : Ø9.5x3 m

u : Ø15.9x1 m

d : Ø9.5x10 m

e : Ø9.5x10 m

i : Ø9.5x10 m

j : Ø9.5x10 m

n : Ø9.5x10 m t : Ø9.5x3 m

o : Ø6.4x10 m

= 27.148 ⇒ R = 27.1 kg

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 35 36

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