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BU Module
3
2 Product Introduction
The BU module of Impecca Flex+ Series is the latest branch device, which adopts intelligent
control technology. Responding to the changes in load of the indoor units, it can coordinate the
flow rate of the refrigerant well. Otherwise, it is very compact and offers a flexible choice about
the installation location, such as the ceiling of parlor, corridor, balcony,storeroomand etc.
2.1 Names of Main Parts
a)IS-BU12
b)IS-BU13
e) IS-BU15
NO.
① ② ③ ④
Name
Gas piping of indoor unit
side
Liquid piping of indoor
unit side
Hanger metal
Electrical
equipment plate
NO.
⑤ ⑥ ⑦ ⑧
Name
Liquid piping of outdoor
unit side
Gas piping of outdoor unit
side
Drain hole
Printed circuit
board
Fig. 1
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