59
5. BRANCH DUCT(Installation at
site)
Discharge by branch duct becomes possible by installing a branch duce at site. Knockout holes on the wall panel of the indoor
unit must be removed.
5-1 Branch Duct Installation Procedure
At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when
required.
Note :
The figure marked with
ww
in the drawing represent the dimensions of the main unit excluding those of the optional
multi function casement.
When installing the optional multi function casement, add 135 mm to the dimensions marked on the figure.
When installing the branch ducts, be sure to insulate adequately. Otherwise condensation and dripping may occur.
Fresh air intake hole
Refrigerant pipe
Drain pipe
Branch duct hole
(Cut out hole)
Branch duct hole diagram
(view from either side)
Branch
duct hole
{
175
Burring hole pitch
{
150
Cut out hole
14 -
{
2.8
Burring hole
350
90
70
_
100 100
90
100
130
w
155
w
167
Branch
duct hole
Fig 1. Branch duct mounting position
Fig 2. Branch duct connection details
Multiple remote
controller adapter
PAC-SA88HA-E
Indoor controller board
Distance between indoor
controller board and relay
must be within 10m.
CN51
Be sure to secure insulation
material by tape and such
5
Green
Yellow
Orange
Connector (5P)
Package side
Multiple remote
controller adapter
PAC-SA88HA-E
Be sure to secure insulation
material by tape and such
Installation at site
CN51
on
indoor
controller
board
Red
Brown
1
MB
~
4. Interlocking operation method with duct fan (Booster fan)
●
Whenever the indoor unit is operating, the duct fan also
operates.
(1)Connect the optional multiple remote controller
adapter(PAC-SA88HA-E)to the connector CN51 on the
indoor controller board.
(2)Drive the relay after connecting the 12V DC relay
between the Yellow and Orange connector lines.
(
w
)Use a relay under 1W.
MB: Electromagnetic switch power relay for duct fan.
X: Auxiliary relay (12V DC LY-1F)
OC360--2.qxp 06.2.24 1:55 PM Page 59
