Technical Information

Piping work and
refrigerant charge
TCGB0079 rev.0 - 01/2013
113
9.2.2 Piping system for header branch
1 indoor unit system (O.U. from 2 to 10 HP) 2 indoor units system (O.U. from 2 to 12 HP)
3 indoor units system (O.U. from 4 to 12 HP) 4 indoor units system (O.U. from 4 to 12 HP)
(picturesareasexample)

Maximum refrigerant piping length
IVX Premium series
(m)
Outdoor Unit
2 HP 2.5 HP 3HP 4HP 5HP 6HP 8HP 10HP 12HP
Maximum piping length be-
tween the outdoor unit and
the farthest indoor unit
Actual Length (L)
50 75 100
Equivalent Length (EL)
70 95 125
Total piping length
2 units (A+B+C)
50 60 85 100 115
3 units (A+B+C+D)
-- 95 100 130
4 units
(A+B+C+D+E+F+G+)
-- 95 100 145
Maximum piping line
after rst branch
2 and 3 units (B, C, D)
10 15
4 units
(B+D, B+E, C+F, C+G)
-- 10 15
Main piping length A
A > B, C, D, E, F, G
Maximum height difference
Outdoor / Indoor (H)
(Outdoor Unit is Higher / Lower.)
30 / 20
Maximum height difference Indoor / Indoor
3 10
Maximum height difference:
branch pipe/Indoor (2,3 and 4 indoor units system)
branch pipe/branch pipe (4 indoor units system)
3
(B-C) / (B-D) / (C-D) / (C+G)-(B+E) / (C+G)-(B+D) /
(C+F)-(B+E) / (C+F)-(B+D)
< 8
9
TCGB0079_rev0_11-2012.indb 113 29/01/2013 14:27:28