Daikin REYQ120AATJ Series, Installation Manual

Page: 32 / 51

29 English
14.2. Calculating the additional refrigerant charge
NOTE
The refrigerant charge of the system must be less than 210 lbs.
(95.2 kg). This means that in case the calculated total refrigerant
charge is equal to or more than 209 lbs. (94.8 kg) you must divide
your multiple outdoor system into smaller independent systems, each
containing less than 209 lbs. (94.8 kg) refrigerant charge. For factory
charge, refer to the unit nameplate.
14.2.1. How to calculate the additional refrigerant to be charged
Additional refrigerant to be charged=R (lbs.). R should be rounded off
in units of 0.1 lbs.
4=:
1
uI
7/8)
u
0.249+(X
2
uI
3/4)
u
0.175+(X
3
uI
5/8)
u
0.121+(X
4
×
I
1/2)
u
0.081
+(X
5
uI
3/8)
u
0.040+(X
6
uI
1/4)
u
?
u
=#?=$?=%?
X
1...6
=Total length (ft. (m)) of liquid piping size at
I
a
* In units of 0.1 kg, additional refrigerant to be charged=R (kg).
4=:
1
uI
22.2)
u
0.37+(X
2
uI
19.1)
u
0.26+(X
3
uI
15.9)
u
0.18+(X
4
uI
12.7)
u
0.12+
(X
5
uI
9.5)
u
0.059+(X
6
uI
6.4)
u
?
u
=#?=$?=%?
Parameter [A]
Refrigerant amount for Branch Selector units
Branch Selector unit model Refrigerant amount
BS4Q54T
0.7 lbs./unit (0.3 kg/unit)
BS6Q54T 0.9 lbs./unit (0.4 kg/unit)
BS8Q54T 1.1 lbs./unit (0.5 kg/unit)
BS10Q54T 1.5 lbs./unit (0.7 kg/unit)
BS12Q54T 1.8 lbs./unit (0.8 kg/unit)
BSF4Q54T 1.4 lbs./unit (0.65 kg/unit)
BSF6Q54T 1.9 lbs./unit (0.85 kg/unit)
BSF8Q54T 2.2 lbs./unit (1.0 kg/unit)
BSQ36T 0.1 lbs./unit (0.05 kg/unit)
BSQ60T 0.2 lbs./unit (0.1 kg/unit)
BSQ96T 0.4 lbs./unit (0.2 kg/unit)
Parameter [B]
Outdoor unit Refrigerant amount
REYQ72A 0.0 lbs./unit (0.0 kg/unit)
REYQ96A 5.1 lbs./unit (2.3 kg/unit)
REYQ120A 5.5 lbs./unit (2.5 kg/unit)
REYQ144A 12.6 lbs./unit (5.7 kg/unit)
REYQ168A 13.2 lbs./unit (6.0 kg/unit)
REYQ192A 32.0 lbs./unit (14.5 kg/unit)
REYQ216A
32.2 lbs./unit (14.6 kg/unit)
REYQ240A
32.4 lbs./unit (14.7 kg/unit)
Parameter [C]
4GHTKIGTCPVCOQWPVD[GSWKXCNGPVƂGNFRKRKPINGPIVJ
and indoor units capacity
Equivalent
ƂGNF
piping
length
Total
indoor unit
capacity
connection
ratio
Refrigerant amount
Total outdoor unit capacity type
REYQ72-
144A
REYQ168-
288A
REYQ312-
480A
<295.3 ft.
(90 m)
Ű
85% 0.0 lbs. (0.0 kg)
>85%
6JGUOCNNGTQH=&?
or 5.51 lbs. (2.5 kg)
6JGUOCNNGTQH=&?
or 6.61 lbs. (3.0 kg)
6JGUOCNNGTQH=&?
or 7.50 lbs. (3.4 kg)
űHV
(90 m)
Ű
85% 0.0 lbs. (0.0 kg)
>85%
2.20 lbs. (1.0 kg)
Parameter [D]
Indoor unit
capacity
type
FXMQ type
07 09 12 15 18 24 30 36 48 54
Refrigerant
amount
(lbs. (kg)/unit)
0.06
(0.03)
0.03
(0.014)
0.14
(0.06)
0.29
(0.13)
0.25
(0.11)
0.16
(0.07)
0.33
(0.15)
0.25
(0.11)
0.08
(0.04)
0.00
(0.00)
Indoor unit
capacity
type
FXFQ type
Others
07 09 12 15 18 24 30 36 48
Refrigerant
amount
(lbs. (kg)/unit)
0.36
(0.16)
0.33
(0.15)
0.30
(0.14)
0.26
(0.12)
0.61
(0.28)
0.53
(0.24)
0.61
(0.28)
0.53
(0.24)
0.36
(0.16)
0.00
(0.00)
'ZCORNGHQTTGHTKIGTCPVDTCPEJWUKPI4'(0'6LQKPVCPF4'(0'6
JGCFGTHQTU[UVGOUCPFGCEJRKRGNGPIVJKUUJQYPDGNQY'ZCORNG
7.5. System piping (length) limitations on page 13.)
Outdoor system: REYQ264AATJ (REYQ120AATJ +REYQ144AATJ )
Branch Selector units
BS4Q54T × 1, BSQ60T × 1, BSQ96T × 1, BSF4Q54T × 2
Indoor units
FXMQ type: 12 × 2, 15 × 2 , 18 × 5
FXFQ type: 36 × 2
Other: 48 × 1
Liquid piping
a:
I
3/4 × 60 ft. f:
I
1/4 × 5 ft. k:
I
3/8 × 10 ft. p:
I
3/8 × 15 ft. u:
I
3/8 × 10 ft.
b:
I
5/8 × 10 ft. g:
I
1/4 × 5 ft.
:
I
3/8 × 10 ft.
q:
I
1/4 × 10 ft. v:
I
1/4 × 5 ft.
c:
I
1/2 × 10 ft. h:
I
3/8 × 5 ft. m:
I
3/8 × 15 ft. r:
I
3/8 × 10 ft. w:
I
1/4 × 5 ft.
d:
I
3/8 × 10 ft. i:
I
1/4 × 5 ft. n:
I
3/8 × 15 ft. s:
I
1/4 × 10 ft. A:
I
1/2 × 10 ft.
e:
I
3/8 × 10 ft. j:
I
1/4 × 5 ft. o:
I
3/8 × 15 ft. t:
I
1/4 × 5 ft. D:
I
1/2 × 15 ft.
Total length of liquid piping: 285 ft.
Total capacity of indoor unit: 100.0%
=&?
= 0.14 × 2 + 0.29 × 2 + 0.25 × 5 + 0.53 × 2 + 0.00 × 1 = 3.17 lbs.
n
FXMQ12 × 2
n
FXMQ15 × 2
n
FXMQ18 × 5
n
FXFQ36 × 2
n
Others48 × 1
=%?6JGUOCNNGTQH=&?QTNDUNDU
R = (60 × 0.175 + 10 × 0.121 + 35 × 0.081 + 125 × 0.040 + 55 × 0.015) × 1.04 + 4.1 + 18.1 + 3.17
n
a
n
b
n
c, A, D
n
d, e, h, k,
, m, n,
o, p, r, u
n
f, g, i, j,
q, s, t,
v, w
n
=#?
n
=$?
n
=%?
= 46.55
Ÿ
46.6 lbs.
Round off in units of 0.1 lbs.
INFORMATION
Piping length is considered by the distance from the outdoor unit to the
farthest indoor unit.
B(1B0DLQB959B,0LQGG