Daikin RXYMQ36MVJU Instruction Manual Page 21
- Page / 31
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
Installation EDUS39-606A-N
20 Installation of Outdoor Units
4.6 Example of connection
Example of connection
(Connection of 5 indoor units)
Branch with REFNET joint
Branch with REFNET joint and REFNET header
Branch with REFNET header
a b cd
ef g h
1234
5
H2
H1
i
Outdoor unit
REFNET joint (A-D)
Indoor units (1-5)
H1
H2
a
a
f
f
b
cd
e
123
Outdoor unit
REFNET joint (A • B)
Indoor units (1-5)
REFNET header
h
g
45
H1
H2
Outdoor unit
REFNET header
Indoor units (1-5)
b c
d
e
1234
5
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
Allowable
height
length
Allowable length after the branch
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.).
ABCD
A
B
áCaution on selecting connection pipesñ
Pipe size selection
Caution)
In brazing connection in the size increase area in the piping, use a
different-diameter joint for connection. (The different-diameter joint
should be procured in the field.)
The connection area is located near the outdoor unit (usually after
the first bending outside the unit).
[Gas side]
Outdoor unit
The first refrigerant
branching kit
Enlarge
Indoor unit
Main pipe
Pipe length between outdoor and indoor units ≤ 492 ft.
Example unit 5: a + b + c + d + i
≤
492 ft.
Example unit 5: a + f ≤ 492 ft.
Example unit 3: a + b + e
≤
400 ft., unit 5: a + f + h
≤
492 ft.
Equivalent piping length between outdoor and indoor units
≤
580 ft. (assume equivalent pipe length of REFNET joint to be 0.5m, that of REFNET header to be 1m, calculation purposes)
Total piping length from outdoor unit to all indoor units ≥33 ft., ≤ 1000 ft.
Difference in height between outdoor and indoor units (H1) ≤ 164 ft. (Max 130 ft. if the outdoor unit is below)
Difference in height between adjacent indoor units (H2) ≤ 49 ft.
Example unit 5: b + c + d + i
≤
130 ft.
Pipe length from first refrigerant branching kit (either REFNET joint or REFNET header ) to indoor unit ≤ 130 ft.
Example unit 5: f ≤ 130 ft.
Example unit 3: b + e
≤
130 ft., unit 5:f + h
≤
130 ft.
Refrigerant branching kit selection
Use REFNET joint from the following table.
RXYMQ36,48 type
KHRP26M22T
Outdoor unit capacity type
Refrigerant branching kit name
How to select the REFNET header
• Choose from the following table below the REFNET header according
to the number of indoor units on the system.
RXYMQ36,48 type
KHRP26M22H (Max. 4 branch)
KHRP26M33H (Max. 8 branch)
Outdoor unit capacity type
•
When the equivalent piping length between the outdoor unit and the indoor units is
295 ft. or more, make sure to use a thicker pipe as the main pipe on the gas line.
When the air-conditioning capacity is reduced due to the refrigerant piping
distance, a thicker pipe may be used also as the main pipe.
(Unit: in.)
φ
5/8
φ
3/4
Outdoor unit connection pipe size Connection pipe size
Gas pipe
Outdoor unit
capacity type
Piping size
(outer diameter)
φ
3/8
Liquid pipe
RXYMQ
36,48 type
Piping between outdoor unit and Refrigerant branching kit
• Match to the size of the connection piping on the outdoor unit.
(Unit: in.)
(Unit: in.)
Piping between Refrigerant branching kits
• Use the pipe size from the following table.
Piping size (outer diameter)
φ
5/8
φ
3/8
Gas pipe
Liquid pipe
24,30,36,48
type
φ
1/2
φ
1/4
φ
5/8
φ3
/8
12,18 type
Piping size
(outer diameter)
Indoor unit
capacity type
Gas pipe
Liquid pipe
Between Refrigerant branching kit and indoor unit
• Pipe size for direct connection to indoor unit must be the
same as the connection size of indoor unit.
Indoor unit connection pipe size
R=
+
Total length (ft.)
of liquid piping
size at
φ
3/8”
x 0.036
Total length (ft.)
of liquid piping
size at
φ
1/4”
x 0.015
Example for refrigerant branch using REFNET joint and REFNET header
a: ? × 100ft.
b: ? × 30ft.
c: ? 1/4
3/8
3/8
× 30ft.
d: ? 1/4 × 30ft.
e: ? 1/4
1/4
× 30ft.
f :
?
× 30ft.
g: 1/4 × 30ft.
h: 1/4 × 70ft.
The piping
lengths are as
at right
R= (a+b)×0.036 + (c+d+e+f+g+h)×0.015 = 7.98
8.0
Refrigerant branching kits can only
be used with R-410A.
RXYMQ36,48 type
φ
5/8” ®
φ
3/4”
Refrigerant branching kit name
0
φ
φ
φ
φ
φ
φ
φ
φ
- Installation of 1
- Outdoor Units 1
- 1. Center of Gravity 3
- 2. REFNET Pipe System 4
- 2.2 Field Refrigerant Piping 5
- 2.3 REFNET Joints and Headers 5
- 2.3.2 REFNET Header 6
- 3. REFNET Pipe 8
- REFNET Pipe EDUS39-606A-N 9
- KHRP26M33H 9
- 4. Installation 10
- 4.2 Introduction 12
- 4.3 Before Installation 12
- • Capacity is deteriorated 13
- 60 or more 14
- 40 or more 15
- 20 or less 17
- 4.5 Refrigerant Piping Work 18
- Selection of piping material 19
- PROTECTION OF PIPING: 19
- Piping connection 19
- (197.62mm) 20
- 4.6 Example of connection 21
- Additional refrigerant charge 22
- 4.8 Electrical Wiring Work 23
- When using shield wire 25
- F2F1F2F1 26
- F1 F2 F1 F2 26
- Power on and check operation 27
- Checks in normal operation 28
- Caution for Refrigerant Leaks 29
- EDUS 39 - 600 - F2 31
Related products and manuals for Split-system air conditioners Daikin RXYMQ36MVJU
(147 pages)
(14 pages)© 2020, manymanuals.com. All rights reserved. | 0.576 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals