Daikin FXL63LVE [50/56] 6 refrigerant pipe selection

Daikin FXL63LVE [50/56] 6 refrigerant pipe selection
6
Systems • Introduction
49
• Introduction
6 Selection procedure
6-6 Refrigerant pipe selection
6-6-1 RSX(Y)P5-10L
Connection example
Use exclusive refrigerant branch kits for R-407C.
Connection of 8 indoor units
Indoor unit
Refnet joint
Refnet header
Branch with refnet joint Branch with refnet joint and refnet header Branch with refnet header
Maximum allowable length between
outdoor and indoor units
Actual pipe length
Pipe length between outdoor and indoor units 120m
[Example] unit 8: a+b+c+d+e+f+g+p 120m [Example] unit 1: a+b+h 100m, : a+i+j 120m [Example] unit 8: a+i 120m
Equivalent length Equivalent pipe length between outdoor and indoor units 140m (Assume equivalent pipe length of refnet joint to be 0.5m and of the refnet header to be 1.0m (For calculation purposes))
Allowable height between outdoor and
indoor units
Difference in height
Difference in height between outdoor and indoor units (H1) 50m ( 40m if outdoor unit is located in a lower position)
Allowable height between adjacent indoor
units
Difference in height between adjacent indoor units (H2) 15m
Allowable length after the branch
Actual pipe length
Pipe length from first refrigerant branch kit (either refnet joint or refnet header) to indoor units 40m
Example unit 8: b+c+d+e+f+g+p 40m Example unit 6: b+h 40m, unit 7: i+k 40m Example unit 8: i 40m
Refrigerant branch kit selection How to select the refnet joint
•When using a refnet joint at the first branch counted from the outdoor unit side, use KHRP26K17T (RSXYP5L) or KHRP26K37T (RSXYP8/10L). [Example: refnet joint A]
For refnet joints other than the first branch, select the proper branch kits based on the total capacity index of indoor units installed after the first branch, using the
following table.
How to select the refnet header
Select the proper branch kit based on the total capacity index of indoor units installed after the header, using the following table.
Branching is impossible between refnet header and indoor unit
Example of downstream indoor units [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
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
Pipe size selection
Pipe size = outer diameter x minimum wall thickness
(unit: mm)
Between the outdoor unit and the uppermost stream refrigerant branch kit
•Match the pipe size to the pipe size of the outdoor unit
Between two immediately adjacent refrigerant branch kits
Select the proper pipe size based on the total capacity index of indoor units connected downstream, using
the following table.
Between refrigerant branch kit and indoor unit
Select the proper pipe size based on the total capacity index of indoor units connected downstream, using
the following table.
(Pipe size for direct connection to indoor unit must be the same as the connection size of the indoor unit.)
Additional refrigerant to be charged
Calculation of additional refrigerant to be charged R (kg) is in function of total length of liquid lines
L and as follows:
RSXYP5L R=[(Lø9.5) x 0.06] + [(L ø6.4) x 0.023]
RSXYP8/10L R=[(Lø12.7) x 0.12] + [(L ø9.5) x 0.06] + [(L ø6.4) x 0.023]
NOTES
Round off R to 1 decimal place.
•If R is 0, keep the unit in operation
Example RSXYP5L
R = [55 x 0.66] + [40 x 0.023] = 4.22 R = 4.2kg
Example RSXYP8/10L
R = [40 x 0.12] + [30 x 0.06] + [69 x 0.023] = 8.187 R = 8.2kg
Example RSXYP8/10L
R = [40 x 0.12] + [30 x 0.06] + [123 x 0.023] = 9.429 R = 9.4kg
(V2891)
A
Total capacity index of indoor units...............................................................................Branch kit
RSXYP5L < 100.........................................................KHRP26K11T
100.........................................................KHRP26K18T
RSXYP8/10L < 160.........................................................KHRP26K18T
160.........................................................KHRP26K37T
Total capacity index of indoor units...............................................................................Branch kit
RSXYP5L < 100.........................................................KHRP26K11H (up to 4 branches)
100.........................................................KHRP26K18H (up to 8 branches)
RSXYP8/10L < 160.........................................................KHRP26K18H (up to 6 branches)
160.........................................................KHRP26K37H (up to 8 branches)
Pipe size connected to outdoor unit
Gas Liquid
RSXYP5L ø 19.1 x 1.0 ø 9.5 x 0.8
RSXYP8L ø 28.6 x 1.2 ø 12.7 x 0.8
RSXYP10L ø 28.6 x 1.2 ø 12.7 x 0.8
Total capacity index Gas Liquid
< 100 ø 15.9 x 1.0 ø 9.5 x 0.8
100-160 ø 19.1 x 1.0 ø 9.5 x 0.8
160 ø 25.4 x 1.2 ø 12.7 x 0.8
Connection pipe size of indoor unit
Indoor unit capacity index Gas Liquid
20 25 32 40 ø 12.7 x 0.8 ø 6.4 x 0.8
50 63 80 ø 15.9 x 1.0 ø 9.5 x 0.8
100 125 ø 19.1 x 1.0 ø 9.5 x 0.8
a : ø9.5 x 30m e : ø9.5 x 3m i : ø6.4 x 5m m : ø6.4 x 5m
b : ø9.5 x 5m f : ø9.5 x 2m j : ø6.4 x 5m n : ø6.4 x 5m
c : ø9.5 x 5m g : ø9.5 x 5m k : ø6.4 x 5m p : ø6.4 x 5m
d : ø9.5 x 5m h : ø6.4 x 5m l : ø6.4 x 5m
a : ø12.7 x 30m d : ø6.4 x 10m g : ø6.4 x 10m m : ø9.5 x 10m
b : ø12.7 x 10m e : ø6.4 x 10m h : ø6.4 x 20m k : ø6.4 x 9m
c : ø9.5 x 10m f : ø6.4 x 10m i : ø9.5 x 10m
a : ø12.7 x 40m d : ø6.4 x 10m g : ø6.4 x 20m
b : ø9.5 x 20m e : ø6.4 x 20m h : ø6.4 x 20m
c : ø9.5 x 10m f : ø6.4 x 23m i : ø6.4 x 30m

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