3. Installation of outdoor unit
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Heat pump 50Hz/R410A
Part 3 Design and installation
A room
B room
c room
A
B
C
CN-PWR
Connection wire for indoor units
(4wires 0 75mm
2
)
Connection wire for outdoor units
(4wires 1 25mm
2
)
3) Electrical Wiring of BD Unit
• Connect refrigerant pipes and connection wires to the appropriate ports marked with matching alphabets (A, B
and C) on this unit.
• Follow the instructions on the wiring nameplate to connect the connection wires of indoor/outdoor units to termi-
nal board numbers.(A, B and C) Always fix each ground wire separately with a ground screw.(See the figure
below.)
• After completing the wiring, fix the outer coating of wires securely with wire clamps. The wire clamp on indoor
unit side is furnished. Follow the procedure below to install.
• Refer to the circuit diagram on the control cover inside outdoor unit.
Screws(M5)
BD unit
Nut
Nut
(M10 or M8)
(M10 or M8)
Nut
(M10 or M8)
Flat washer
Flat washer
Flat washer
Hanging bolt
Hanging bolt
Hanging bolt
(M10 or M8)
Procedure
(1) Fix the furnished hanger metal with two screws.(4 loca-
tions in total).
(2) Using an insert-hole-in- anchor, hang the hanging bolt.
(3) Install a hexagon nut and a flat washer (locally-
procured)to the hanging bolt as shown in the figure.
(4) After checking the level of the unit, tighten the hexagon
nut.
Procedure
(1) Fix the furnished hanger metal with two screws.
(3 locations in total).
(2) After checking with a level that the unit is level, fix the
unit
* Block up the parts of hanger holes (2 places) by
using insulation polyethylene form after installing
the hanger.(This is to prevent condensation)
• Do not install near bedrooms, the sound of refriger-
ant flowing through the piping may sometimes be
audible.
In case of 3 rooms
