COMFORT-AIRE A-VFH30QB-1 Installation & Operation Manual page 16

Allowable Length and Height Fall of the Refrigerant Pipe
Total length (actual length) of fitting
pipe
Length of farthest fitting pipe (ft)
Outdoor unit at
Height difference
between outdoor
Outdoor unit at
unit and indoor unit
Height difference between
indoor units (ft.)
Indoor unit
4.2.3 Installation of the pipe insulation
(1)The refrigerant pipe should be insulated in order to prevent condensation and water leakage.
(2)The joints of the indoor unit should be wrapped with insulating material and no gap is allowed on the joint of
the indoor unit, as shown in Fig.9.
Inverterflex Series
A-VFH30QB-1
229.6ft
82ft
49.2ft
upper
49.2ft
lower
24.6ft
Outdoor uni t
L1 L2
a
b
Indoor unit
Thermal insulating layer is required to be wrapped at this part.
No gap
Installation & Operation Manual - VFH-B 30/36/42 Series
Table 7
Allowable V alue
A-VFH36QB-1
A-VFH42PB-1
246.1ft
82ft
49.2ft
49.2ft
24.6ft
Equivalent length of the farthest fitting pipe L
L3 L4
c
d
Fig 8
Thermal insulating pipe
Fig 9
10
11
Inverterflex Series
Fitting Pipe
L +L
+...+L (M ≤5)
1 2 M
L
（X=1，2，3，4,5）
X
H1
H3
H2
x
L5
e