UK BIGRAC GEN 24 - Flipbook - Page 57
COMMERCIAL
COMMERCIAL INDEX
Refrigerant piping arrangements
Single
Twin
Triple
L
L
L
B
A
H1
L1
L2
L1
H1
L3
H1
L2
H2
H4
H2
H3
Double-twin
PACi NX Elite twin, triple and double-twin system
from 7,1 to 14,0 kW
L
Joint distribution (sold separately)
A= CZ-P224BK2BM
B= CZ-P3 HPC2BM
C= CZ-P224BK2BM
A
L1
L2
PACi NX Standard twin system from 10,0 to
14,0 kW
C
L3
L4
Joint distribution (sold separately)
A= CZ-P224BK2BM
H1
H4
PACi Elite twin, triple and double-twin system
from 20,0 to 25,0 kW
C
H7
L5
L6
H6
Joint distribution (sold separately)
A= CZ-P680BK2BM
B= CZ-P3 HPC2BM
C= CZ-P224BK2BM
H2
H3
H5
Twin System
PACi NX Standard single and twin system
from 7,1 to 14,0 kW
PACi NX Elite and PACi Elite twin, triple and double-twin system from 7,1 to 25 kW
Indoor unit
combinations (see
examples above)
Indoor unit combinations (see examples above)
Single
Twin
Total pipe length
L
L + L1 +
L2
Maximum pipe length from outdoor
unit to most distant indoor unit
–
Maximum branch pipe length
Equivalent lengths
and height
differences (m) for
outdoor unit sizes...
Equivalent lengths and
height differences (m)
for outdoor unit sizes
from 7,1 to 14,0 kW
Equivalent lengths and
height differences (m)
for outdoor unit sizes
from 20,0 to 25,0 kW
Single
Twin
Triple
Double-Twin
≤ 50 m
L
L + L1 +
L2
L + L1 + L2 + L3
L + L1 + L2 + L3 + L4 + L5 +
L6
U-60/U-71: ≤ 50 m
U-100/125/140: ≤ 75 m
U-200: ≤ 100 m
U-250: ≤ 80 m
–
–
–
L + L1 or
L + L2
L + L1 or L + L2 or L
+ L3
L + L1 + L3 or L + L1 + L4 or
L + L2 + L5 or L + L2 + L6
–
U-200: 90 m
U-250: 60 m
–
L1 L2
≤ 15
–
L1 or L2
L1 or L2 or L3
L1 + L3 or L1 + L4 or L2 +
L5 or L2 + L6
≤ 15 m
≤ 20 m
Maximum branch pipe length
differences
–
L1 > L2
L1 - L2
≤ 10
–
L1 > L2:
L1 - L2
L1 > L2 > L3: L1 - L2
L2 - L3
L1 - L3
L2 + L6 (Max.)
L1 + L3 (Min.):
(L2 + L6) - (L1 + L3)
≤ 10 m
≤ 10 m
Maximum pipe length differences
after first branch (Double-Twin)
–
–
–
–
–
–
L2 > L1: L2 - L1
≤ 10 m
≤ 10 m
Maximum pipe length differences
after second branch (Double-Twin)
–
–
–
–
–
–
L4 > L3: L4 - L3
L6 > L5: L6 - L5
≤ 10 m
≤ 10 m
Height difference
(outdoor unit located higher)
H1
H1
≤ 30
H1
H1
H1
H1
≤ 30 m
≤ 30 m
Height difference
(outdoor unit located lower)
H1
H1
≤ 15
H1
H1
H1
H1
≤ 15 m
≤ 15 m
Height difference between indoor
units
–
H2
≤ 0,5
–
H2
H2 or H3 or H4
H2 or H3 or H4 or H5 or H6
≤ 0,5 m
≤ 0,5 m
Twin System
PACi NX Standard single and twin system
from 7,1 to 14,0 kW
PACi NX Elite twin, triple and double-twin system from 7,1 to
14,0 kW
Big PACi NX twin, triple and double-twin system from
20,0 to 25,0 kW
Outdoor unit main
piping diameter (L)
Outdoor unit
main piping
diameter (L)
Outdoor unit main
piping diameter
(L) (mm)
Indoor unit
connection tube
(L1, L2)
Indoor unit connection piping diameter (L1, L2,
L3, L4) (mm)
Double-Twin
distribution
pipe (L1, L2) 1)
Indoor unit
connection piping
diameter 2)
Unit type capacity
100
125
50
60
71 - 140
36
45
50
60
71
200
250
100 - 125
50
60 - 125
Liquid (mm)
Ø 9,52
Ø 12,70
Ø 6,35
Ø 9,52
Ø 9,52
Ø 6,35
Ø 6,35
Ø 6,35
Ø 9,52
Ø 9,52
Ø 12,70
Ø 12,70
Ø 9,52
Ø 6,35
Ø 9,52
Gas (mm)
Ø 15,88
Ø 15,88
Ø 12,70
Ø 15,88
Ø 15,88
Ø 12,70
Ø 12,70
Ø 12,70
Ø 15,88
Ø 15,88
Ø 22,22
Ø 22,22
Ø 15,88
Ø 12,70
Ø 15,88
Additional gas amount (g/m)
50
50
20
50
50
20
20
20
50
50
60
80
40
20
40
1) Total capacity of indoor unit connected after the branch. 2) 4 way cassette type.
Make additional charges by adding up tube length in an order of main tube (L) > branch tube (L1 > L2 > L3 wide diameter) and then selecting the amount of refrigerant corresponding to the remaining (after
charge-less tube length: 30 m) liquid tube diameter and tube length from the above table.
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