Daikin VRVIII-S, Service Manual

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SiENBE34-703 Example of Connection
Appendix 223
g
m n
6 7
8
H2
H1
P
H1
H2
a
a
i
i
b
c d e f
g
h
1 2 3 4 5 6
k
j
7 8
H1
H2
c d e f
g
h b
1 2 3 4 5 6 7
8
F G
A B
0
0 *
0
0 *
f 9.5 × 0.8
ø 15.9 × 1.0
ø 9.5 × 0.8
63 · 80 · 100 ·
125 type
ø 12.7 × 0.8
ø 6.4 × 0.8
ø 15.9 × 1.0
ø 9.5 × 0.8
20 · 25 · 32 ·
40 · 50 type
Indoor unit
capacity type
a: × 30m
b: × 10m
c: 0 9.5
9.5
9.5
× 10m
d: 9.5 × 13m
e: 6.4
6.4
× 10m
f : × 10m
g: 1 6.4 × 10m
h: 1 6.4 × 20m
i : 9.5 × 10m
j : 1 6.4 × 10m
k: 1 6.4 × 1 9m
R= 73 0.054 + 69 0.022 = 5.46
a+b+c+d+i e+f+g+h+j+k
5.5
fnet joint
Branch with refnet joint and refnet header
Branch with refnet header
Example for refrigerant branch using refnet joint and refnet header
The piping lengths
are as at right
hen the size is larger
Piping size (outer diameter × minimum thickness)
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Piping size
er × minimum thickness)
Piping size
(outer diameter × minimum thickness)
gerant branch kit
piping on the outdoor unit.
• Use the pipe size from the following table.
e
Connection pipe size
(Unit: mm)
(Unit: mm) (Unit: mm)
• Pipe size for direct connection to indoor unit must be the
same as the connection size of indoor unit.
Indoor unit connection pipe size
Between refrigerant branch kit and indoor unit
Piping between refrigerant branch kits
oor and indoor units
≤
150m
f + g + p
≤
150m
Example unit 6: a + b + h
≤
120m, unit 8: a + i + k
≤
150m
Example unit 8: a + i
≤
150m
outdoor and indoor units
≤
175m (assume equivalent pipe length of refnet joint to be 0.5m, that of refnet header to be 1m, calculation purposes)
tdoor unit to all indoor units
≥
10m,
≤
300m
en outdoor and indoor units (H1)
≤
50m (Max 40m if the outdoor unit is below)
en adjacent indoor units (H2)
≤
15m
erant branch kit (either refnet joint or refnet header ) to indoor unit
≤
40m
How to select the refnet header
• Choose from the following table below the REFNET header according
to the number of units on the system.
Example unit 8: i
≤
40m
Example unit 6: b + h
≤
40m, unit 8:i + k
≤
40m f + g + p
≤
40m
ollowing table.
KHRP26M22T
RXYSQ4, 5, 6 type
KHRP26M22H (Max. 4 branch)
KHRP26M33H (Max. 8 branch)
Refrigerant branch kit name Outdoor unit capacity type
Refrigerant branch kit name type
Refnet header Outdoor unit
Indoor units (1-8) Indoor units (1-8) (1-8)
Outdoor unit REFNET joint (A • B)
EFNET joint (A-G)
Refnet header
otal length (m)
liquid piping
ze at
ø
6.4
×0.022