Daikin RXYQ72, Руководство по обслуживанию

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SiUS39-601 Example of Connection
Appendix 237
5. Example of Connection
One outdoor
unit installed
Branch with REFNET joint Branch with REFNET joint and REFNET header Branch with REFNET header
a
A B C D E F G
A B C D E F G
b c d e f g
h i j k l m n
1 2 3 4 5 6 7
8
H2
H1
P
Outdoor unit
REFNET joint ( - )
Indoor units ( - )
H1
H1
H2
H2
a a
i
b
a
i
b
c d e f
g
h
1 2 3 4 5 6
Outdoor unit
Outdoor unit
REFNET joint ( • )
Indoor units ( - )
c d e f g h
1 2 3 4 5 6
Indoor units ( - )
REFNET header
REFNET header
k
j
7 8
k
j
7 8
H1
H2
H2
Outdoor unit REFNET header
Indoor units ( - )
c d e
f
g
h
i
i
b
1 2 3 4 5 6 7
8
8
a b c d e f
g
8
H2
H1
H3 H3
P
Indoor units ( - )
Outdoor unit
REFNET joint ( - )
REFNET joint ( • )
h i j k l m n
1 2 3 4 5 6 7
First outdoor
branch
H1
H3
a
Outdoor unit
REFNET header
Indoor units ( - )
c d e f
g
h b
1 2 3 4 5 6 7
Multiple outdoor
units installed
∗
In case of multiple outdoor units installed, re-read to
the first outdoor branch as seen from the indoor unit.
Maximum
allowable
length
Between outdoor
and indoor units
Between outdoor branch and indoor unit
(Only for multiple outdoor units)
Between outdoor and indoor units
Between indoor and indoor units
Between outdoor and outdoor units
Actual pipe length
Actual pipe length
Actual pipe length
Difference in height
Difference in height
Difference in height
Equivalent length
Total extension length
Pipe length between outdoor and indoor units
≤
490ft.
Example unit 8: a + b + c + d + e + f + g + p
≤
490ft.
Example unit 8: b + c + d + e + f + g + p
≤
130ft.
Equivalent pipe length between outdoor and indoor units
≤
575ft. (assume equivalent pipe length of REFNET joint to be 1.6ft., that of REFNET header to be 3.3ft. calculation purposes)
Piping length from outdoor branch to outdoor unit
≤
33ft. Approximately length: max 43ft.
Difference in height between outdoor and indoor units (H1)
≤
164ft. (Max 130ft. if the outdoor unit is below)
Difference in height between adjacent indoor units (H2)
≤
49ft.
Difference in height between outdoor unit (main) and outdoor unit (sub) (H3)
≤
16ft.
Pipe length from first refrigerant branch kit (either REFNET joint or REFNET header ) to indoor unit
≤
130ft.
Total piping length from outdoor unit* to all indoor units
≤
950ft.
Allowable
height
length
Allowable length after the branch
Refrigerant branch kit selection
Pipe size selection
Example unit 8: a + i
≤
490ft. Example unit 6: a + b + h
≤
330ft., unit 8: a + i + k
≤
490ft.
Example unit 8: i
≤
130ft. Example unit 6: b + h
≤
130ft., unit 8:i + k
≤
130ft.
r
t
Outdoor unit
r
≤
33ft. (Approximately length: max 43ft.)
t
≤
33ft. (Approximately length: max 43ft.)
Refrigerant branch kits can only be
used with R-410A.
How to select the REFNET joint
• When using REFNET joints at the first branch counted from the outdoor unit side, choose from the following table
in accordance with the capacity of the outdoor unit.
Piping between outdoor units and refrigerant branch kit (part A)
• Match to the size of the connection piping on the outdoor unit.
Outdoor unit connection piping size
Piping between refrigerant branch kits
• Choose from the following table in accordance with the total capacity of all the
indoor units connected below this.
• Do not let the connection piping exceed the refrigerant piping size chosen by
general system model name.
How to calculate the additional refrigerant
to be charged
If a negative result is gotten for R from the formula at right, no refrigerant
needs to be added.
Additional referigerant to be charged R (lb.)
R should be rounded off in units of 0.1 (lb.).
Piping between outdoor
branch and outdoor unit (part B)
Oil-equalizing line (part C)
Piping between outdoor units and refrigerant
branch kit (part A)
RXYQ72/96
RXYQ144/168/192
KHRP26M22T, KHRP26M33T
KHRP26M22T, KHRP26M33T, KHRP26M72TU
• For REFNET joints other than the first branch, select the proper branch kit model based on the total capacity
index.
< 72
72
≤
x < 111
111
≤
KHRP26M22T
KHRP26M33T
KHRP26M72TU
How to select the REFNET header
• Choose from the following table in accordance with the total capacity of all the indoor units connected below the REFNET
header.
< 72
< 111
111
≤
KHRP26M22H (Max. 4 kit)
KHRP26M33H (Max. 8 kit)
KHRP26M72H (Max. 8 kit)
In case of multiple outdoor units installed, use outdoor branch kit.
2 units BHFP22M90U
example in case of REFNET joint C; indoor units 3 + 4 + 5 + 6 + 7 + 8
example in case of REFNET joint B indoor units 7 + 8,
example in case of REFNET header; indoor units 1 + 2 + 3 + 4 + 5 + 6
example in case of REFNET header; indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 Example of downstream indoor units
RXYQ72
RXYQ96
RXYQ144/168/192
φ
3/4
φ
7/8
φ
1-1/8
φ
3/8
φ
3/8
φ
5/8
Gas pipe
indoor capacity index
Piping size
Liquid pipe
φ
3/8
φ
1/2
φ
5/8
< 72
72
≤
x < 111
111
≤
x < 156
156
≤
φ
5/8
φ
7/8
φ
1-1/8
Between refrigerant branch kit and indoor unit
• Pipe size for direct connection to indoor unit must be the same as the
connection size of indoor unit.
φ
1/4
φ
3/8
07, 09, 12, 18 type
24, 30, 36, 48 type
φ
1/2
φ
5/8
Piping between outdoor branch and outdoor unit (part B)
Gas pipe
outdoor capacity type
Piping size
Liquid pipe
φ
3/8
φ
3/8
RXYQ72
RXYQ96
φ
3/4
φ
7/8
a:
φ
3/4 × 100ft.
b:
φ
5/8 × 30ft.
c:
φ
3/8 × 30ft.
d:
φ
3/8 × 30ft.
e:
φ
3/8 × 30ft.
f :
φ
3/8 × 30ft.
g:
φ
1/4 × 30ft.
h:
φ
1/4 × 70ft.
i :
φ
1/2 × 30ft.
j :
φ
1/4 × 30ft.
k:
φ
1/4 × 25ft.
Oil-equalizing line (Only for multiple outdoor units installed) (part C)
φ
1/4 Piping size
(Unit: in.)
(Unit: in.)
(Unit: in.)
(Unit: in.)
(Unit: in.)
R= +
indoor capacity index Refrigerant branch kit name
Number of outdoor units Branch kit name
Outdoor unit capacity type Refrigerant branch kit name
indoor capacity index Refrigerant branch kit name
Gas pipe
Outdoor unit capacity type
Piping size
Liquid pipe
Gas pipe
indoor capacity type
Piping size
Liquid pipe
+ +
+ + _
If the outdoor unit is
RXYQ192 units and the
piping lengths are as at
right
R= 100 0.168 + 30 0.014 + 30 0.074 + 120 0.036 + 155 0.015 - 6.6 =22.485
b a c+d+e+f g+h+j+k i 22.5
NOTE:
Total length (ft.)
of liquid piping
size at
φ
7/8






×0.235
Total length (ft.)
of liquid piping
size at
φ
3/4






×0.168
Total length (ft.)
of liquid piping
size at
φ
5/8






×0.114
Total length (ft.)
of liquid piping
size at
φ
1/2






×0.074
Total length (ft.)
of liquid piping
size at
φ
3/8






×0.036
Total length (ft.)
of liquid piping
size at
φ
1/4






×0.015
Model name
RXYQ72/96
RXYQ144/168/192 0 lb.
6.6 lb.
Amount of refrigerant
Example for refrigerant branch using REFNET joint and REFNET header for RXYQ192
A B
A B
Caution
The thickness and material shall be selected in accordance with local code.
For an outdoor unit multi installation, make the settings in accordance with the
following figure.
A G
1 8
1 8
1 8
A B
A B
1 8
indoor unit
REFNET joint
REFNET header
1
A
A
G
1 8
1 8