BMKH42M-NDG3 Owners Manual

Free match series
10
Allowable Length and Height Fall of the Refrigerant Pipe
Table 7
Allowable Value
Fitting Pipe
30K
36K
BMKH42M-NDG3
Total length (actual length) of fitting
pipe
229.6ft 246.1ft L
1
+L
2
+…+L
M
(M ≤5)
Length of farthest fitting pipe (ft) 82ft 82ft L
X
（X=1，2，3，4,5）
Height difference
between outdoor
unit and indoor unit
Outdoor unit at
upper
49.2ft 49.2ft H1
Outdoor unit at
lower
49.2ft 49.2ft H3
Height difference between indoor
units (m)
24.6ft 24.6ft H2
b
a
e
d
c
L4L3L2 L5L1
Outdoor unit
Height difference between indoor unit and outdoor unit H1
Height difference between
indoor units H2
Indoor unit
Indoor unit
Equivalent length of the f arthest fitting pipe L
x
Fig 8
4.2.3 Installation of the Protection Layer of the Refrigerant Pipe
(1)The refrigerant pipe should be insulated by the insulating material and plastic tape in order to prevent
condensation and water leakage.
(2)The joints of the indoor unit should be wrapped with the insulating material and no gap is allowed on the joint
of the indoor unit, as shown in Fig.9.
Thermal insulating layer is required to be wrapped at this part.
Thermal insulating pipe
No gap
Fig 9