Transcript Slide 1

Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV III
Product Selection
Piping selection
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Selection Considerations
•
Cooling Load calculations
• Noise Levels
•
Heating Load calculations
• Pipe Runs
•
Internal and Ambient temp
• Unit Dimensions
•
Building layout drawings
•
Orientation
•
Room Usage
•
Fresh Air Requirements
•
Air and temperature distribution
• Aesthetics
• Planning Restrictions
• Possible future site expansion
Total or sensible capacity selection ?
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Outdoor and Indoor Unit selection is based on using the
capacity index
Indoor unit size
Capacity index
To select indoor unit and
unit combinations,
to size pipe work and refnet joints,
we use ‘Index’ numbers:
For example the index no of
FXZQ20M7V1B is 20
20
20
25
25
32
31.25
40
40
50
50
63
62.5
80
80
100
100
125
125
140
140
200
200
250
250
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Maximum Number of Indoor Units Connected to One Outdoor Unit
Outdoor untis
Indoor units
Cooling only
Heat pump
Heat recovery
VRV III
VRV III
VRV II
RXQ5P7W1B
RXQ8P7W1B
RXQ10P7W1B
RXQ12P7W1B
RXQ14P7W1B
RXQ16P7W1B
RXQ18P7W1B
-
RXYSQ4P7V3B
RXYSQ5P7V3B
RXYSQ6P7V3B
RXYQ8P7W1(B)
REYQ8M7W1B
RXYQ10P7W1(B)
REYQ10M7W1B
RXYQ12P7W1(B)
REYQ12M7W1B
RXYQ14P7W1(B)
REYQ14M7W1B
RXYQ16P7W1(B)
REYQ16M7W1B
RXYQ18P7W1(B)
REYQ18M7W1B
RXYQ20P7W1(B)
REYQ20M7W1B
RXYQ22P7W1(B)
REYQ22M7W1B
RXYQ24P7W1(B)
REYQ24M7W1B
RXYQ26P7W1(B)
REYQ26M7W1B
RXYQ28P7W1(B)
REYQ28M7W1B
RXYQ30P7W1(B)
REYQ30M7W1B
RXYQ32P7W1(B)
REYQ32M7W1B
RXYQ34P7W1(B)
REYQ34M7W1B
RXYQ36P7W1(B)
REYQ36M7W1B
RXYQ38P7W1B
REYQ38M7W1B
RXYQ40P7W1B
REYQ40M7W1B
RXYQ42P7W1B
REYQ42M7W1B
RXYQ44P7W1B
REYQ44M7W1B
RXYQ46P7W1B
REYQ46M7W1B
RXYQ48P7W1B
REYQ48M7W1B
RXYQ50P7W1B
RXYQ52P7W1B
Daikin Europe, Consulting
RXYQ54P7W1B
-
Maximal connectable
For VRVIII
6
8
9
22
25
30
36
40
44
42
47
51
53
56
60
64
64
64
64
64
64
64
64
64
64
64
sales
64
I.U combination index
Mininum
Maximum
50
62,5
70
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
525
550
575
600
625
650
675
130
162,5
182
260
325
390
455
520
585
650
715
780
845
910
975
1040
1105
1170
1235
1300
1365
1430
1495
1560
1625
1690
1755
For VRVII
8
13
16
19
20
20
20
20
20
22
32
32
32
32
32
34
36
38
40
40
40
40
section -
Da ik in E u r o p e Ac a d e m y
Learning, our way
Maximum Number of Indoor Units Connected to BS Boxes
(required for Heat Recovery Systems)
Branch
selector box
Total
index
No of indoor
units
connectable
R410a
BSVQ100MVE
BSVQ160MVE
BSVQ250MVE
Min – Max
20 - 100
8
Min – Max
100 - 160
8
Min – Max
160 – 250
5
Size 50 is the
smallest to be
connected
System type
No of BS
boxes
connectable
REYQ8M
13
REYQ10M
16
REYQ12 – 20M
20
REYQ22M
22
REYQ24 – 32M
32
REYQ34M
34
REYQ35M
36
REYQ38M
38
REYQ40 – 48M
40
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Indoor unit Selection
FXCQ
Based on High Fan Speed
For “Low Fan” Speed, capacity
reduction is not published, but the
correction factors from next slide
may be used.
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Correction factors to calculate the unit 's capacity at low fan tap.
Class
20
25
32
40
50
63
80
100
125
Class
20
25
32
40
50
63
80
100
125
200
250
FXCQ-M
Correction factor
Cooling Heating
81%
77%
81%
78%
81%
78%
83%
81%
83%
81%
86%
84%
88%
85%
84%
81%
FXMQ-M
Correction factor
Cooling Heating
89%
89%
89%
89%
87%
88%
91%
91%
FXZQ-M
Correction factor
Cooling Heating
86%
83%
86%
83%
86%
84%
82%
79%
81%
77%
87%
87%
87%
87%
84%
85%
90%
90%
FXHQ-M
Correction factor
Cooling Heating
89%
88%
87%
85%
86%
83%
FXFQ-M
Correction factor
Cooling Heating
85%
82%
85%
82%
85%
82%
82%
79%
79%
75%
84%
81%
83%
81%
88%
85%
87%
85%
FXKQ-M
Correction factor
Cooling Heating
FXAQ-M
Correction factor
Cooling Heating
71%
66%
73%
68%
72%
67%
83%
81%
87%
85%
82%
79%
FXLQ-M
Correction factor
Cooling Heating
91%
89%
91%
89%
83%
81%
85%
83%
86%
84%
83%
81%
88%
88%
85%
86%
86%
82%
89%
88%
Daikin Europe, Consulting sales section
FXSQ-M
Correction factor
Cooling Heating
81%
78%
81%
78%
82%
79%
86%
83%
82%
79%
83%
79%
87%
85%
86%
84%
82%
79%
FXNQ-M
Correction factor
Cooling Heating
91%
89%
91%
89%
83%
81%
85%
83%
86%
84%
83%
81%
Da ik in E u r o p e Ac a d e m y
Learning, our way
Indoor Unit Selection
Select indoor units for room layout provided
“Example (FXCQ) of where information can be found”
Starting from Engineering data book EEDE06-2 page 795:
Noise Levels details
Engineering data book EEDE06-2 page 815
Unit Dimensions
Engineering data book EEDE06-2 page 798
Air Distribution
Engineering data book EEDE06-2 page 818
Make a record of Model, Fan speed, Total and Sensible Cooling duties
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Indoor Unit Selection
18 m
N
Room A
8.0kw Sensible Cooling
3m
3m
3m
Room E
1.65 kw
Sensible
Room D
2.5 kw
Sensible
Room A - General Office
Room B - Meeting Room
Room C - Manager
Room D - Small office
Room E - Reception
Internal design 23 deg C db
16 deg C wb
Ambient design 29 deg C db
Room C
2.1 kw
Sensible
6m
Room B
4.2 kw Sensible
6m
6m
3m
Rooms A, B and E 400mm ceiling void
Room C 200 mm ceiling void
Room D no void (restricted floor space)
Ceiling Height 2.7m
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Indoor Unit Selection
Possible Solution
Internal design 23 deg C db
16 deg C wb
Ambient design 29 deg C db
Required
Sensible
Total
Sensible
Room A
3 x FXFQ40M
8.0 kW
High Speed
10.8 kW
9.0 kW
Room B
1 x FXSQ80M
4.2 kW
Low Speed
5.97 kW
4.73 kW
Room C
1 x FXLQ40M
2.1 kW
Low Speed
3.06 kW
2.3 kW
Room D
1 x FXAQ40M
2.5 kW
High Speed
3.60 kW
3.31 kW
Room E
1 x FXSQ32M
1.65 kW
Low Speed
2.31 kW
1.88 kW
Note:
The low speed duties were calculated based on the correction factors shown in
the previous table.
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Condensing Unit Selection
Considerations
• Remember the maximum index connectable
• Remember the maximum number of indoor units
• Cooling Only, Heat Pump or Heat Recovery
• Positioning
• Noise levels
• Service Access space required
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Condensing Unit Selection
18 m
Room A
6m
FXFQ40M
Room E
3m
FXSQ32M
FXFQ40M
FXFQ40M
Room D
FXAQ40M
Room C
FXLQ40M
Room B
6m
FXSQ80M
Condensing Unit Base
3m
6m
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Condensing Unit Selection
Example: using Inverter 2 pipe Heat Pump
Room A 3 x FXFQ40M
Room B 1 x FXSQ80M
Room C 1 x FXLQ40M
Room D 1 x FXAQ40M
Room E 1 x FXSQ32M
Total Index
120
80
40
40
31.25
311.25
Suitable Condensing Unit
RXYQ10P7W1
Indoor Unit Combination Index
Outdoor
Unit
RXYQ5P7W1
RXYQ8P7W1/REYQ8M
RXYQ10P7W1/REYQ10M
Minimum
Maximum
62.5
100
125
162.5
260
325
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Condensing Unit Selection
Example: using Inverter 2 pipe heat pump
Room A 3 x FXFQ40M
Room B 1 x FXSQ80M
Room C 1 x FXLQ40M
Room D 1 x FXAQ40M
Room E 1 x FXSQ32M
Total Index
120
80
40
40
31.25
311.25
Suitable Condensing Unit
RXYQ10P7W1
Look up condensing unit duty from EEDE06–2 page 196
At indoor temperature of 16 deg C wb and outdoor temp 29 deg C db
Total Cooling with index of 308 = 24,8 kW
Total Cooling at index of 336 = 27.0 kW
Index connected = 336 – 311.25 = 24.75
27,0 kW – 24,8 = 2.2 kW
27.0 kW – 1.944 kW
336 – 308 = 28
= 25.055 kW
2.2 kW/28 = 0.0785 kW
24.75 x 0.0785 = 1.944 kW
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Condensing Unit Selection
Example: using Inverter 2 pipe heat pump (Back to the original data selected at high
speed)
Corrected
Index
Total
Sensible
Total
Sensible
Room A
= 3 x FXFQ40M
(high speed)
120
10.80kW
9.0kW
9,66kW
8,04kW
Room B
= 1 x FXSQ80M
(low speed)
80
5.97 kW
4.73 kW
5,60 kW
4.44kW
Room C
= 1 x FXLQ40M
(low speed)
40
3.06 kW
2.3kW
2.73 kW
2.05kW
Room D
= 1 x FXAQ40M
(high speed)
40
3.6kW
3.3Kw
3.22Kw
2.96Kw
Room E
= 1 x FXSQ32M
(low speed)
31.25
2.37kW
1.88kW
2.08kW
1.69 kW
Total index
311.25
Calculate corrected indoor unit capacity
RXYQ10M total cooling = 25.05kW
FXFQ40M = (40 x 25.05) = 3.22 kW total
311. 25
Reduce sensible by the same proportion prior to correction calculation
Don’t forget to apply correction for low speed when necessary:
FXSQ80 = (80 x 25.05) x 0.87 = 5,60 kW total
311.25
FXSQ80 = 4.73 x 5,60 = 4.44 kW sensible
Daikin Europe, Consulting sales section
5.97
Da ik in E u r o p e Ac a d e m y
Learning, our way
Condensing Unit Selection
Example: using Inverter 2 pipe heat pump
Required
Sensible
Corrected
Total
Sensible
Room A
= 3 x FXFQ40M
8.0 kW
High Speed
9,66kW
8,04kW
Room B
= 1 x FXSQ63M
4.2 kW
Low Speed
5,60 kW
4.44kW
Room C
= 1 x FXLQ40M
2.1 kW
Low Speed
2.73 kW
2.05kW
Room D
= 1 x FXAQ40M
2.5 kW
High Speed
3.22Kw
2.96Kw
Room E
= 1 x FXSQ25M
1.65 kW
Low Speed
2.08kW
1.69 kW
Are we finished ?
Daikin Europe, Consulting sales section
Not yet ?
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Length Correction
Example: using Inverter 2 pipe heat pump
Look up capacity correction ratio on page 294 of EEDE06-2
Table RXYQ10P
For Room B FXSQ80M
Run = 20m
Level difference = Outdoor unit 3m below indoor unit
Capacity reduction factor = 0.98
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Length Correction
18 m
Room A
6m
FXFQ40M
Room E
3m
FXSQ32M
FXFQ40M
FXFQ40M
Room D
FXAQ40M
Room C
FXLQ40M
Room B
6m
FXSQ80M
Condensing Unit Base
3m
6m
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
(Change in Cooling Capacity)
Pipe Length Correction
(H=m)
Outdoor situated
above
Indoor units
0.90
50
0.87
0.85
0.92
40
0.95
30
0.98
20
1.0
10
0
Example:
0
Outdoor unit
3m below
Indoor unit
0
10
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
100
110 ……..190 m
1.0
20
30
Outdoor situated
below
Indoor units
40
0.98
0.95
0.92
0.90
(H=m)
Daikin Europe, Consulting sales section
0.87
0.85
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Length Correction
Example: using Inverter 2 pipe heat pump
Corrected
Total
Sensible
Pipe length
Correction
factor
required
Pipe length corrected
Total
Sensible
Room A
= 1 x FXFQ40M
= 1 x FXFQ40M
= 1 x FXFQ40M
9,66kW
8,04kW
15M
11M
7M
0.99
0.99
0.99
3,18kW
3,18kW
3,18kW
2.66kW
2.66kW
2.66kW
Room B
= 1 x FXSQ80M
5,60 kW
4.44kW
20M
0.98
5,49kW
4.35kW
Room C
= 1 x FXLQ40M
2.73 kW
2.05kW
16M
0.98
2,68kW
2.02kW
Room D
= 1 x FXAQ40M
3.22Kw
2.96Kw
10M
0.99
3.18kW
2,93kW
Room E
= 1x FXSQ32M
2.08kW
1.69 kW
4M
1.00
2.06kW
1.67kW
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Additional correction due to Defrost operation
Defrost operation protects the outdoor unit coil against freezing:
•
•
•
•
•
•
Happens in heating mode
Performs once max every 2 hours
Duration: between 4 and 8 min
During defrost: outdoor/indoor units’ fans are stopped
No heating is delivered during defrost
Limited cooling is delivered (heat recovery models)
•
Capacity tables do not take account of this capacity reduction
•
The heating capacity should be ammended by a correction factor:
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Summary of selection after corrections
Example: using Inverter 2 pipe heat pump
Required
sensible
Result
total
Result
sensible
Room A
= 3 x FXFQ40M
8.0 kW
High Speed
10,66kW
8,04kW
Room B
= 1 x FXSQ80M
4.2 kW
Low Speed
5,49kW
4.35kW
Room C
= 1 x FXLQ40M
2.1 kW
Low Speed
2,68kW
2.02kW
Room D
= 1 x FXAQ40M
2.5 kW
High Speed
3.18kW
2,93kW
Room E
= 1 x FXSQ32M
1.65 kW
Low Speed
2.06kW
1.67kW
If selected fan coil unit corrected duty is too low, then that unit has
to be re-selected and the complete procedure repeated
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Would this suit Heat Recovery?
Room A
FXFQ40M
Room E
FXSQ32M
FXFQ40M
FXFQ40M
Room D
FXAQ40M
Room C
FXLQ40M
Room B
FXSQ80M
Meeting Room
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRVII Heat Recovery: selection of BS Boxes
Min – Max
100 - 160
BSVQ160MVE
Room A
FXFQ40M
Room E
FXFQ40M
FXFQ40M
Room D
FXSQ32M
FXAQ40M
Condensing Unit Base
with REYQ10M
BS Box
Room B
Room C
FXSQ80M
FXLQ40M
BSVQ100MVE
Daikin Europe, Consulting sales section
Min – Max
20 - 100
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV III “P7” Series
Selection by
VRV Express
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
VRV Selection Software
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
Material list
Model
Qty
Description
REYQ12M
1
Heat recovery VRV M R410A
REYQ8M
1
Heat recovery VRV M R410A
BSVQ100M
4
Branch selector unit R410A
BSVQ160M
3
Branch selector unit R410A
FXAQ40M
1
A - Wall mounted unit
FXFQ50M
2
F - 4-way blow ceiling mounted cassette
FXFQ80M
2
F - 4-way blow ceiling mounted cassette
FXSQ40M
2
S - Concealed ceiling mounted
FXSQ80M
3
S - Concealed ceiling mounted
KHRQ22M20T7
3
REFNET branch piping kit
KHRQ23M29T7
4
REFNET branch piping kit
KHRQ23M64T7
1
REFNET branch piping kit
DCS601A51
1
I controller
BRC1D517
8
Wired remote control
BYC125KJW1
4 Decoration panel
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV Express
Indoor unit details
Name
Model
Tmp C
Rq
TC
Av TC
Rq SC
Av SC
Tmp
H
Rq
HC
Av
HC
Airflow
Soun
d
MC
A
WxHxD
Wg
ht
°C
kW
kW
kW
kW
°C
kW
kW
l/s
dBA
A
mm
kg
First Floor - Room 101
FXFQ50M
22.0
4.0
4.9
3.5
3.8
21.0
2.0
4.5
183-267
27-32
0.3
840x246x840
24
First Floor - Room 102
FXFQ50M
22.0
4.0
4.9
3.5
3.8
21.0
2.0
4.5
183-267
27-32
0.3
840x246x840
24
First Floor - Room 103
FXFQ80M
22.0
5.5
7.8
4.9
5.5
21.0
3.2
7.1
250-333
31-36
0.5
840x246x840
25
First Floor - Room 104
FXFQ80M
22.0
5.5
7.8
4.9
5.5
21.0
3.2
7.1
250-333
31-36
0.5
840x246x840
25
First Floor - Room 105
FXSQ80M
22.0
5.5
7.8
4.9
6.2
21.0
3.2
7.1
358-450
37-43
1.4
1400x300x800
51
First Floor - Room 106
FXSQ40M
22.0
3.0
3.9
2.5
2.9
21.0
2.0
3.5
150-192
32-38
0.6
700x300x800
30
Second Floor - Room 201
FXSQ40M
22.0
3.0
3.7
2.5
2.8
21.0
2.0
3.6
150-192
32-38
0.6
700x300x800
30
Second Floor - Room 203
FXSQ80M
22.0
6.0
7.5
5.2
6.0
21.0
4.5
7.2
358-450
37-43
1.4
1400x300x800
51
Second Floor -Room 204
FXSQ80M
22.0
6.0
7.5
5.2
6.0
21.0
4.5
7.2
358-450
37-43
1.4
1400x300x800
51
Second Floor - Room 205
FXAQ40M
22.0
3.0
3.7
2.5
2.9
21.0
1.8
3.6
150-200
34-39
0.4
1050x290x230
14
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV III “P” Series
Field Pipe work Application
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRV refrigerant piping system is based on REFNETS
Advantages of REFNET system:
Short dimensioning time
Short installation time
REFNET joint
REFNET header
NEVER
install
joint after
a section
header !
Daikin
Europe,aConsulting
sales
Da ik in E u r o p e Ac a d e m y
Learning, our way
Refnet installation recommendations
Joints are to be mounted ….
Vertically
…..Horizontally
+ 30°
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
REFNET piping system
Select refnets according
to the capacity
Adjust the pipe size
according to the capacity
Possibly
prototypes
match pipe and refnet
using adaptors
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Refrigerant Pipe Work Maximum “Actual” Piping Limitations
A
Can become 90 m
in certain conditions
A
For level differences
above 50m;
• One size up of
main liquid pipe
• Option kit
40M
90M
190M
Max
EQUIVALENT
LENGTH
165M
15M
•Total piping length = 1000M
•No Oil traps
•No Liquid traps
•No Solenoid valves
•No Sight glasses
•No Driers
•No Additional oil
•Max pressure test 38.5 bar
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Field Piping Limitations VRV III P series (Heat pump Inverter)
if
Can be
90m
RXYQ…P
1.
“Longest” – “shortest” branch = b+c+d+e+l-f <=40m
2.
f, g,h, j, k, l, m, n <= 40m
3.
Pipes b, c, d, e between first and last kit are sized up
4.
For the total piping calculation the actual length of b, c, d, e
is counted double
40m
165m
a
b
c
d
e
90m
f
FXHQ….M
g
FXCQ….M
h
FXCQ….M
j
FXSQ….M
k
l
n
NEVER
INSTALL A
JOINT AFTER
A HEADER
m
FXAQ….M
15m
FXLQ….M
Daikin Europe, Consulting sales section
FXLQ….M
FXLQ….M
Da ik in E u r o p e Ac a d e m y
Learning, our way
VRVII “M” Series Field Piping Limitations (Heat Recovery)
REYQ….M
150m
40M
50m
BSVQ. .M
FXHQ….M
BSVQ. .M
FXCQ….M
BSVQ. .M
FXCQ….M
BSVQ. .M
BSVQ. .M
BSVQ. .M
BSVQ. .M
FXSQ….M
BSVQ. .M
BSVQ. .M
15m
FXLQ….M
FXLQ….M
Daikin Europe, Consulting sales section
FXLQ….M
FXLQ….M
FXLQ….M
Da ik in E u r o p e Ac a d e m y
Learning, our way
Piping joints required at the first branch
VRV III
VRV II H/R
Refnet joints for 2 pipe
Outdoor system type
KHRQ22M20T
RX(Y)Q5
KHRQ22M29T9
RX(Y)Q8~10
KHRQ22M64T
RX(Y)Q12~18 + RXYQ20~22
KHRQ22M75T
RXYQ24~54
Refnet joints for 3 pipe
Outdoor system type
KHRQ23M29T7
REQY8 – 10
KHRQ23M64T7
REYQ12 – 22
Daikin
Europe, Consulting sales section
KHRQ23M75T7
REYQ24>
Da ik in E u r o p e Ac a d e m y
Learning, our way
Piping Joints other than the first branch
VRV III
VRV II H/R
Refnet joints for 2 pipe
Connectable index
KHRQ22M20T
<200
KHRQ22M29T9
200 - <290
KHRQ22M64T
290 - <640
KHRQ22M75T
>640
Refnet joints for 3 pipe
Connectable index
KHRQ23M20T7
<200
KHRQ23M29T7
200 - <290
KHRQ23M64T7
290 - <640
Daikin Europe, Consulting sales section
KHRQ23M75T7
640>
Da ik in E u r o p e Ac a d e m y
Learning, our way
Selection of Piping Joints
1st joint corresponds to outdoor unit
2nd Joint according to class total
Possibly, this results into a bigger joint than the 1st joint !
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Piping Headers
PLEASE NOTE :
Refnet header for 2 pipe
Connectable index
KHRQ22M29H
<290
KHRQ22M64H
290 - <640
KHRQ22M75H
640>
Refnet header for 3 pipe
Connectable index
KHRQ23M29H7
<200
KHRQ23M29H7
200 - <290
KHRQ23M64H7
290 - <640
KHRQ23M75H7
640>
Class 250 CANNOT
be connected
to a header
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Size connections to the outdoor units
Heat Pump model
Outdoor model
Gas pipe
Liquid pipe
RX(Y)Q5
15.9mm
9.5mm
RX(Y)Q8
19.1mm
9.5mm
RX(Y)Q10
22.2mm
9.5mm
RX(Y)Q12, 14, 16
28.6mm
12.7mm
RX(Y)Q18
+RXYQ20-22
28.6mm
15.9mm
RXYQ24
34.9mm
15.9mm
RXYQ26-34
34.9mm
19.1mm
RXYQ36-54
41.3mm
19.1mm
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Sizing between refnet branch kits for heat
pump models
Piping
Total unit
capacity
Gas
(outer diameter)
Liquid
(outer diameter)
<150
15.9mm
9.5mm
150-->200
19.1mm
9.5mm
200 - >290
22.2mm
9.5mm
290 - <420
28.6mm
12.7mm
420 - <640
28.6mm
15.9mm
640 - <920
34.9mm
19.1mm
>920
41.3mm
19.1mm
Adjust the pipe size
according to the capacity
Possibly, this results
into a bigger pipe than
the one coming from
the outdoor unit !
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Refrigerant pipe Size Connections to Indoor Units
The pipe size of
the indoor unit
Total indoor unit capacity
Gas
Liquid
20, 25, 32, 40, 50
12.7mm
6.4mm
63, 80, 100, 125
15.9mm
9.5mm
200
19.1mm
9.5mm
250
22.2mm
9.5mm
Please note: all the above connections are flared other than the gas pipe connection on
Daikin
Europe,
the 200 an 250 models being
brazed
style Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Size connections to the outdoor units for Heat recovery
Outdoor model
Gas pipe
Liquid pipe
Discharge pipe
REYQ8
19.1mm
9.5mm
15.9mm
REYQ10
22.2mm
9.5mm
19.1mm
REYQ12
28.6mm
12.7mm
19.1mm
REYQ14, 16
28.6mm
12.7mm
22.2mm
Pipe Sizing between refnet branch kits for Heat recovery
Total unit capacity
Gas
Discharge
Liquid
<63
12.7mm
9.5mm
6.4mm
63 - <200
15.9mm
12.7mm
9.5mm
200 - <290
22.2mm
19.1mm
9.5mm
290 - <420
28.6mm
19.1mm
12.7mm
420 - <640
28.6mm
28.6mm
15.9mm
640 - <920
34.9mm
28.6mm
19.1mm
>920
41.3mm
28.6mm
Daikin Europe, Consulting
sales section
19.1mm
Da ik in E u r o p e Ac a d e m y
Learning, our way
Equivalent length = a reference for a pressure drop of an component in
the pipe work = length of linear pipes + allowances for fittings
The following
allowances
should be
allocated to the
following
components:
Branch selector box
= 4m
Refnet header
= 1m
Refnet joint
= 0.5m
41.3mm
1 – 5/5 bend
= 0.7m
34.9mm
1 – 3/8 bend
= 0.66m
28.mm
1 – 1/8 bend
= 0.5m
22.2mm
7/8 bend
= 0.4m
19.1mm
3/4 bend
= 0.25m
12.7mm
1/2 bend
= 0.22m
9.5mm
3/8 bend
= 0.18m
Overall Equivalent length =
=(Equivalent length of main pipe work x 0.5) + Equivalent length of branch pipe work
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
What happens when the overall equivalent length
from the condensing unit to any indoor unit exceeds 90 m ?
Increase diameter of the Liquid
AND the Gas pipes between
the condenser and the first refnet
Increase only gas for
RX(Y)Q5P7
Increase only liquid for
RXYQ12,14,24, 36~54 P
REYQ :
The WHOLE RANGE
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Equivalent length: example of calculation
Equivalent length
80m
E. Length
40m
Overall Equivalent length =
(80m x 0.5)
+
= 80m
40m
(No increase in pipe size required)
Section to be
increased in size
Equivalent length
110m
E. Length
40m
(110m x 0.5)
Overall Equivalent length =
+
= 95m
40m
(An increase in main pipe work size is required)
Section to be
increased in size
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Piping Between modules forming a Condensing unit
Heat pump (P7 series)
To indoor
units
No oil equalization line required for P7 models
= Liquid Line
= Gas Line
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Piping Between modules forming a Condensing unit
Heat recovery (M series)
To indoor
units
= ¼” (6.4mm) Oil Equalising Line (only for REYQ18 or more)
= Liquid Line
= Gas Line
= Discharge Line
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe limitations
between modules forming a Condensing unit
A
B
C
Branch
Maximum pipe length
A
10m (13 m equiv.) or less
B
10m (13 m equiv.) or less
C
10m (13 m equiv.) or less
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Sizing Between Outdoor Units
Heat pump branch kit
Two unit connection kit
BHFQ22P1007
Three unit connection kit
BHFQ22M1517
Heat recovery branch kit
Two unit connection kit
KHFQ23M907
Three unit connection kit
BHFQ23M1357
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Sizing Between Outdoor Units
VRVIII
Daikin Europe, Consulting sales section
~ 54
Da ik in E u r o p e Ac a d e m y
Learning, our way
Pipe Sizing Between Outdoor Units VRVII H/R
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Additional Refrigerant Charge Calculation for VRVIII
takes in consideration the total lengths of liquid piping (m)
TOTAL 22.2 =
TOTAL 19.1 =
TOTAL 15.9 =
TOTAL 12.7 =
TOTAL 9.5 =
TOTAL 6.4 =
x 0.37 =
+
x 0.26 =
+
x 0.18 =
+
x 0.12 =
+
x 0.059 =
+
x 0.022 =
= R (additional kg R410)
R should be rounded off
in units of 0,1 kg
Daikin Europe, Consulting sales section
Da ik in E u r o p e Ac a d e m y
Learning, our way
Additional Refrigerant Charge Calculation for VRVII H/R
takes in consideration the total lengths of liquid piping (m)
TOTAL 22.2 =
TOTAL 19.1 =
R=
TOTAL 15.9 =
TOTAL 12.7 =
TOTAL 9.5 =
TOTAL 6.4 =
x 0.35 =
+
x 0.25 =
+
x 0.17 =
+
x 0.11 =
+
x 0.054 =
+
x 0.022 =
0 kg (8-16 HP)
x 1.15
Daikin Europe, Consulting sales section
3 kg (18-32 HP)
6 kg (34-48 HP)
Da ik in E u r o p e Ac a d e m y
Learning, our way
Field Pipe sizing & Additional “Refrigerant” Charging
Example of centralizing table
SUCTION
15
5
B
V
F
1
32
ADDITIONAL REFRIGERANT CHARGE CALCULATION
TOTAL 12.7 =
X 0.11 =
+
TOTAL 9.5 =
X 0.054 =
TOTAL 6.4 =
C
W
10
10
D
X
4
H
2
N
40
U
V
W
X
Y
Z
1
2
3
4
5
6
O
25
X 0.022 =
6
6
6
Z
L
4
J
5
4
3
1
E
Y
I
6
M
HEADER
JOINT
+
G
1
BRANCH
SELECTOR BOX
LIQUID
R
S
T
K
1
1
SUCTION
L
M
N
O
P
Q
6
U
LIQUID
A
B
C
D
E
F
G
H
I
J
K
R_____ M
A
DISCHARGE
1
P
80
40
6
Q
1
40
15m
2
2
2
R
S
T
40
No additional oil required!
Daikin Europe, Consulting sales section
40
40
Da ik in E u r o p e Ac a d e m y
Learning, our way
R-410A
Piping material
material
Size
ø6,4
“The material, wall thickness,
tensile strength, ductility,
corrosion resistance, forming
and testing methods shall be
suitable for the refrigerant
used and withstand the
pressure and stresses which
may occur”
The same requirements are valid
for refnet headers and joints
Minimum thickness
O
t(mm)
0,80
ø 9,5
O
0,80
ø12,7
O
0,8
ø15,9
O
0,99
ø19,1
1/2H
0,80
ø22,2
1/2H
0,80
ø28,6
1/2H
0,99
ø34,9
1/2H
1,21
ø41,3
1/2H
1,43
C1220-
O : Annealed
½ H: Half Hard
For half hard pipes the maximum allowed tensile stress is 61N/mm²
for this reason, the 0.2% proof strength of the half hard pipe shall be
minimum 61N/mm²
The bending radius is more or equal to 3 times the diameter of the pipe
The maximum working pressure for R-410A VRV P-series is 38 bar
Daikin Europe, Consulting sales section