UK BIGRAC GEN 26 LR - Flipbook - Page 59
RANGE
COMMERCIAL
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 5,0 to 14,0 kW
L
Joint distribution (sold separately)
A= CZ‑P224BK2BM
B= CZ‑P3 HPC2BM
C= CZ‑P224BK2BM
A
L1
L2
Big PACi NX Elite twin, triple and double-twin
system from 20,0 to 25,0 kW
C
L3
L4
Joint distribution (sold separately)
A= CZ‑P680BK2BM
B= CZ‑P3 HPC2BM
C= CZ‑P224BK2BM
H1
H4
C
H7
L5
L6
H6
PACi NX Standard twin system from 10,0 to
14,0 kW
H2
H3
Joint distribution (sold separately)
A= CZ‑P224BK2BM
H5
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 5,0 to 25,0 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 5,0 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-50/60: 40 m
U-71: 60 m
U-100/125/140: ≤ 100 m
U-200/250: ≤ 100 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
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.
For pipe sizes and refrigerant charge, please refer to the technical instructions or design software.
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