76-EN
75-EN
– 38 –
EN
Allowable length of refrigerant pipes and allowable height difference between units
Heat pump
L4
f
g
h
i
j
L5
L10
L6
L3
a
b
c
d
L7
e
Outdoor unit
Main piping
L1
Branching pipe
L2
Indoor unit
First branching
Height difference
between outdoor
and indoor units
H1
Height difference
between indoor
units
H2
Branching header
Y-shaped branching joint
Farthest piping length
L
The longest piping length from the
fi
rst branch
Li