Daikin RXYQ96PATJ [15/25] English 10
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Daikin RXYQ96PATJ [15/25] English 10

Daikin RXYQ192PATJ [15/25] English 10
English 10
Required Conditions Example Drawings
1. It is necessay to increase the pipe size between the first branch
kit and the final branch kit. (Reducers must be procured on site)
However, the pipes that are same pipe size with main pipe must
not be increased
2. For calculation of Total extension length, the actual length of
above pipes must be doubled.
(except main pipe and the pipes that are not increased)
3. Indoor unit to the nearest branch kit ≤ 130 ft.
4. The difference between
[Outside unit to the farthest indoor unit]
and [Outside unit to the nearest indoor unit] ≤ 130 ft.
8 b+c+d+e+f+g+p≤ 295 ft.
increase the pipe size of b, c, d, e, f, g
a+b×2+c×2+d×2+e×2+f×2+g×2
+h+i+j+k+l+m+n+p≤ 3280 ft.
h, i, j....... p ≤ 130 ft.
The farthest indoor unit 8
The nearest indoor unit 1
(a+b+c+d+e+f+g+p)-(a+h)≤ 130 ft.
Increase the pipe size as follows
φ3/8 → φ1/2
φ1/2 → φ5/8
φ5/8 → φ3/4
φ3/4 → φ7/8
φ7/8 → φ1*
φ1-1/8 → φ1-1/4*
φ1-3/8 → φ1-1/2*
a
ABCDEFG
bcdef
g
hi j kl mn
1234567
8
H1
p
Outside unit
REFNET joint (A-G)
Indoor units ( 1 - 8 )
*If available on the site, use this size. Otherwise it can not be increased.
How to calculate the
additional refrigerant
to be charged
Additional refrigerant to
be charged : R(lb)
R should be rounded
off in units of 0.1 lb.
R =
(Total length (ft)
of liquid piping
size at φ7/8)
(Total length (ft)
of liquid piping
size at φ5/8)
(Total length (ft)
of liquid piping
size at φ3/8)
(Total length (ft)
of liquid piping
size at φ3/4)
(Total length (ft)
of liquid piping
size at φ1/2)
(Total length (ft)
of liquid piping
size at φ1/4)
0.249
0.121
0.040
0.175
0.081
0.015
HEAT PUMP SYSTEM
MODEL NAME
MODEL NAME
THE AMOUNT OF
REFRIGERANT
RXYQ72 ~ 108PAYD
RXYQ72 ~ 108PATJ
RXYQ144 ~ 192PAYD
RXYQ144 ~ 192PATJ
—
2.2 lb
REFRIGERANT AMOUNT FOR EXCEEDING
CONNECTION CAPACITY OF INDOOR UNIT
INDOOR
CONNECTION
CAPACITY
MORE THAN 100%
120% OR LESS
MORE THAN 120%
130% OR LESS
RXYQ72 ~ 192PAYD
RXYQ72 ~ 192PATJ
1.1 lb
1.1 lb
Example for refrigerant branch using REFNET joint and REFNET heder for systems and each pipe length as shown below.
Outside system : RXYQ192PAYD
Total capacity of indoor unit : 116%
a : φ3/4 × 15ft.
b : φ3/4 × 10ft.
c : φ3/8 × 5ft.
d : φ3/8 × 5ft.
e : φ3/8 × 5ft.
f : φ3/8 × 5ft.
g : φ3/8 × 5ft.
h : φ3/8 × 5ft.
i : φ3/8 × 5ft.
j : φ3/8 × 5ft.
k : φ3/8 × 10ft.
l : φ3/8 × 10ft.
m : φ3/8 × 10ft.
n : φ3/8 × 5ft.
o : φ1/4 × 5ft.
p : φ1/4 × 5ft.
r : φ1/2 × 1ft.
s : φ3/8 × 1ft.
t : φ3/8 × 1ft.
u : φ5/8 × 1ft.
Note 1.
When the equivalent pipe length between outside and indoor units is 295 ft or more,
the size of main pipes (both gas side and liquid side (refer to figure 16)
must be increased according to the right table.
(Refer to figure 16)
1.Outdoor unit
2.Main pipes
3.Increase
4.First refrigerant branch kit
5.Indoor unit
Note 2.
Allowable length after the first refrigerant branch kit to indoor units is 130 ft or less, however it can be extended up to 295 ft
if all the following conditions are satisfied. (In case of “Branch with REFNET joint”)
System
RXYQ72PA type
RXYQ96PA type
RXYQ108PA type
RXYQ144PA type
RXYQ168PA type
RXYQ192PA type
Gas pipe
φ3/4 → φ7/8
φ7/8 → φ1
Not Increased
φ1-1/8 → φ1-1/4
φ1-1/8 → φ1-1/4
φ1-1/8 → φ1-1/4
Liquid pipe
φ3/8 → φ1/2
φ3/8 → φ1/2
φ1/2 → φ5/8
φ1/2 → φ5/8
φ5/8 → φ3/4
φ5/8 → φ3/4
R = ( 25 × 0.175 + 1 × 0.121 + 1 × 0.081 + 75 × 0.040 + 10 × 0.015 ) + 2.2 + 1.1
a, b u r c~n, s, t o, p
RXYQ192PATJ
116%
= 11.027 11.0lb
Round off in units of 0.1 lb.

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