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11
English
a:
φ
15.9 × 30m
b:
φ
15.9 ×10m
c:
φ
9.5 × 20m
d:
φ
9.5 × 20m
e:
φ
9.5 × 20m
f :
φ
9.5 × 20m
g:
φ
9.5 × 20m
h:
φ
9.5 × 20m
i :
φ
9.5 × 10m
j :
φ
6.4 × 10m
k:
φ
6.4 × 10m
r:
φ
9.5 × 1m
s:
φ
9.5 × 1m
t:
φ
9.5 × 1m
u:
φ
12.7 × 3m
R=
+
+
+
u
a, b
c~i, r~t
j, k
5.1 kg
×0.26
kg/m
×0.18
kg/m
Total length (m)
of liquid piping
size at
φ
12.7
×0.12
kg/m
×
0.022
kg/m
Example for refrigerant branch using REFNET joint and REFNET header
RQCYQ540PY1
116%
+
×
0.059
kg/m
(A: The ratio of total
capacity index of
connectable indoor
units to outdoor
capacity index (%).)
In case the outdoor unit is
RQCYQ540PY1 type and the
piping lengths are as at right.
Total capacity of indoor unit: 116%
RQYQ140
RQYQ180
RQCYQ280
RQCYQ360
RQCYQ460
RQCYQ500
RQCYQ540
2.4 kg
2.4 kg
6.8 kg
6.8 kg
11.2 kg
11.2 kg
11.2 kg
A
≤
100%
A > 100%
0 kg
0.5 kg
Total length (m)
of liquid piping
size at
φ
19.1
Total length (m)
of liquid piping
size at
φ
15.9
Total length (m)
of liquid piping
size at
φ
6.4
Total length (m)
of liquid piping
size at
φ
9.5
How to calculate the additional refrigerant to
be charged.
Additional refrigerant to be charged R (kg)
(R should be rounded off in units of 0.1kg.)
∗
Note 1
When the equivalent pipe length between outdoor unit multi connection piping kit and indoor units is 90m or more, the size of m
ain pipes (both gas-side and liquid-side) must be increased to the
following table.
Depending on the length of the piping, the capacity may drop, but even in such case it is able to increase the size of main pip
es.
(Refer to figure 10.1)
1.
Outdoor unit
2.
Main pipes
3.
Increase
4.
The first refrigerant branch kit
5.
Indoor unit
R= ( 40
×
0.18 + 3
×
0.12 + 1.33
×
0.059 + 20
×
0.022 ) 11.2 + 0.5 = 5.147
Piping size (O.D.)
φ
15.9
à
φ
19.1
φ
19.1
à
φ
22.2
φ
22.2
à
φ
25.4
φ
25.4
à
φ
28.6
φ
28.6
à
φ
34.9
φ
9.5
à
Not increased
φ
9.5
à
Not increased
φ
9.5
à
φ
12.7
φ
12.7
à
φ
15.9
φ
15.9
à
φ
19.1
Gas pipe
Liquid pipe
RQYQ140
RQYQ180
RQCYQ280
RQCYQ360
RQCYQ460
RQCYQ500, 540
Model name of
outdoor unit system
01_EN_3P226891-14T.fm Page 11 Tuesday, September 30, 2014 7:48 PM