Si39-406
Refrigerant Piping
Installation Manual REYQ96MTJU
151
6.3
Example of Connection
a:
φ
3/8 × 100ft.
b:
φ
3/8 × 30ft.
c:
φ
1/4 × 30ft.
d:
φ
1/4 × 30ft.
e:
φ
1/4 × 30ft.
f :
φ
1/4 × 30ft.
g:
φ
1/4 × 30ft.
h:
φ
1/4 × 70ft.
i :
φ
3/8 × 30ft.
j :
φ
1/4 × 30ft.
k:
φ
1/4 × 25ft.
If the piping lengths
are as at right
R= a+b+i × 0.036 + c+d+e+f+g+h+j+k × 0.015
× 1.15 = 11.37
11.4
Example for refrigerant branch using refnet joint and refnet header
One outdoor
unit installed
Branch with refnet joint
Branch with refnet joint and refnet header
Branch with refnet header
Maximum
allowable
length
Between outdoor
and indoor units
Between outdoor and indoor units
Between indoor and indoor units
Actual pipe length
Actual pipe length
Difference in height
Difference in height
Equivalent length
Total extension length
Pipe length between outdoor and indoor units
≤
330ft
Example unit 8: a + b + c + d + e + s
≤
330ft
Example unit 8: b + c + d + e +s
≤
130ft.
Equivalent pipe length between outdoor and indoor units
≤
390ft (assume equivalent pipe length of refnet joint to be 1.6ft, that of refnet header to be 3.3ft., that of BSVQ36, 60 to be 13ft calculation purposes)
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.
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 + o
≤
330ft
Example unit 6: a + b + l
≤
330ft, unit 8: a + m + n + p
≤
330ft
Example unit 8: o
≤
130ft.
Example unit 6: b + l
≤
130ft., unit 8:m + n + p
≤
130ft.
Refrigerant branch kits can only be
used with R410A.
Piping from BS unit to indoor Unit and Piping from
Refrigerant branch kit to indoor unit used as cooling only
must be composed by 2 pipes (Suction Gas pipe and
Liquid pipe)
How to select the refnet joint
•
When using refnet joints at the first branch counted from the outdoor unit side.
Piping between outdoor unit and refrigerant branch kit
•
Match to the size of the connection piping on the outdoor unit.
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 refrigerant to be charged R (lb.)
R should be rounded off in units of 0.1lb.
REYQ96 type
KHRP25M33T
For refnet joints other than the first branch, select the proper branch kit model based on the total capacity index.
< 72
72
≤
KHRP25M22T
KHRP25M33T
KHRP26M22T
KHRP26M33T
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
72
≤
KHRP25M33H
KHRP26M22H or KHRP26M33H
KHRP26M33H
example in case of refnet joint C; indoor units 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 the case of refnet header; indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
Example of downstream indoor units
φ
3/8
φ
7/8
φ
3/4
REYQ96 type
(Unit:in.)
R=
indoor capacity index
Refrigerant branch kit name
Branch kit name
Outdoor unit capacity type
Refrigerant branch kit name
indoor capacity index
Refrigerant branch kit name
Gas pipe
Suction
In case of 3 pipes
In case of 2 pipes
Discharge
Outdoor unit
capacity type
Piping size (outer diameter)
Liquid pipe
× 1.15
+
NOTE:
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
Between BS unit (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.
* 1 The BS unit (BSVQ36MVJU) port and connection pipe are different sizes.
Use the reducing joints included with the BS unit.
* 2 When the indoor capacity is 60 x< 72, use the attached pipes included
1/4
3/8
* 1 12, 18 type
24, 30, 36, 48 type
1/2
5/8
(Unit:in.)
Gas pipe
indoor capacity index
Piping sizee (outer diameter)
Liquid pipe
Between two immediately adjacent refrigerant branch kits and BS unit
•
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.
Suction
Gas pipe
indoor capacity
index
Piping size (outer diameter)
Discharge
Liquid pipe
φ
1/4
φ
3/8
< 24
24 x<
72
72
φ
1/2
φ
5/8
φ
7/8
φ
3/8
φ
1/2
φ
3/4
(Unit:in.)
* 1
* 2
In case of 3 pipes
In case of 2 pipes
indoor unit
refnet joint
refnet header
Outdoor unit
side
Indoor unit
side
Discharge gas pipe
(3 pipes)
(2 pipes)
Suction gas pipe
Liquid pipe
Gas pipe
Liquid pipe
BS
unit
1
A
with BS unit.
1
2
3
4
B2
B1
B3
B4
5
6
7
7
6
1
6
8
H2
H1
a
b
c
l
n
o
q
r
s
p
m
k
i
f
g
j
h
d
e
REFNET joint ( ~ )
Outdoor unit
BS unit
Indoor unit
B1 B4
Cooling only
( . )
Cool/Heat selection possible
( ~ )
( ~ )
1
( ~ )
8
( ~ , . )
H1
a
c
e
f
j
l
i
h
k
g
d
b
m
n
p
o
H2
REFNET joint ( . )
REFNET header
Outdoor unit
5
6
Cooling only
BS unit
B1 B5
( ~ )
1
4
7
8
Indoor unit
Cool/Heat selection possible
1 8
( ~ )
B1
B2
B3
B4
B5
1
2
3
4
5
6
7
8
( . )
H1
H2
a
b
d
f
h
j
l
n
o
c
e
g
i
k
m
REFNET header
Outdoor unit
BS unit
B1 B6
1
6
Cool/Heat selection possible
( ~ )
Indoor unit
1 8
( ~ )
7
8
Cooling only
( . )
1
2
3
4
5
6
7
8
B1
B2
B3
B4
B5
B6
( ~ )
+
A
B
C
D
E
A
E
A
B
B
A
Содержание REYQ96MTJU
Страница 1: ...Design Installation Testing Instruction R410A Heat Recovery 60Hz REYQ96MTJU Si39 406...
Страница 6: ...Si39 406 iv Table of Contents...
Страница 34: ...Installation Si39 406 28 General Information Flaring Procedure...
Страница 68: ...Installation Si39 406 62 General Information Caution Caution label 3P124617 4P124614...
Страница 114: ...Appendix Si39 406 108 General Information 3P135887 1...
Страница 124: ...Appendix Si39 406 118 General Information 7 8 Piping System Diagrams 7 8 1 Outdoor Unit REYQ96MTJU 4D045329...
Страница 126: ...Appendix Si39 406 120 General Information 7 8 3 BS Unit BSVQ36MVJ BSVQ60MVJ 4D045338...
Страница 127: ...Si39 406 Appendix General Information 121 7 9 Wiring Diagrams 7 9 1 Outdoor Unit REYQ96MTJU 3D044892A...
Страница 128: ...Appendix Si39 406 122 General Information 7 9 2 Field Wiring REYQ96MTJU 3D042647A...
Страница 156: ...Refrigerant Piping Si39 406 150 Installation Manual REYQ96MTJU...
Страница 158: ...Refrigerant Piping Si39 406 152 Installation Manual REYQ96MTJU...
Страница 230: ...Precautions for New Refrigerant R410A Si39 406 224 Precautions for New Refrigerant R410...
Страница 236: ...375 Park Avenue Suite 3308 New York N Y 10152 info daikinac com www daikinac com...