1 Placing OA spacer on the indoor unit, fix the brackets 1 and 2 (2 pieces
each) with bolts.
Install OA spacer in the appropriate position that the duct joint side of OA
spacer becomes opposite to the control box of indoor unit (FDTC).
2 Fix the brackets 3 and 4 (2 pieces each) with bolts.
1-1. When installing OA spacer before hanging the indoor unit
1 After hanging the indoor unit (*), fix the bracket 1 (2 pieces) temporarily
with bolt by 2 turns as shown in the figure.
* For the height (position) of hanging the indoor unit, refer to Section 5.
2 Install OA spacer.
i. Install it in the way that the recess of OA spacer will fit on the bracket
1 fixed temporarily at the step 1.
ii. Tighten the bolt of bracket 1.
iii. Fix the bracket 2 with bolt. (Tighten up)
1-2. When installing OA spacer after hanging the indoor unit
OA spacer can be installed regardless whether the indoor unit has already been hanged or not.
(It is recommended to install before hanging the unit for convenience of installation.)
Applying the insulation attached to duct joint set (TC-OAD-E)
1 Applying the insulation 1 as shown in the figure.
2 Applying the insulation 2 as shown in the figure.
* Be sure to cover the entire surface of sheet metal of the duct joint with the insulation.
3 Fix the brackets 3 and 4 (2 pieces each) with bolts.
2. Applying insulation
Work procedure
Tighten the panels to the brackets 3 and 4 with bolts.
For further details, refer to the installation manual of panel.
1. This units is designed for 2 × 2 grid ceiling.
If necessary, please detach the T bar temporarily before you install it.
If it is installed on a ceiling other than 2 × 2 grid ceiling, provide an inspection port on the control box side.
2. Arrange the suspension bolt at the right position (530mm × 530mm).
3. Make sure to use four suspension bolts and fix them so as to be able to hold 500N load.
4. Ensure that the lower end of the suspension bolt should be 102mm above the ceiling plane. Temporarily put the four lower nuts 182mm above the ceiling plane and
the upper nuts on distant place from the lower nuts in order not to obstruct hanging the indoor unit or adjust the indoor unit position, and then hang the indoor unit.
5. Adjust the indoor unit position after hanging it by inserting the level gauge (Packed together with the indoor unit.) attached on the package into the air supply port and
checking if the gap between the ceiling plane and the indoor unit is appropriate. (*) In order to adjust the indoor unit position, adjust the lower nuts while the upper
nuts are put on distant place. Conrm there is no backlash between the hanger plate for suspension bolt and the lower nut and washer.
* Use the level gauge only when OA spacer has been installed before hanging (4 1-1 only).
◎Connect the single split series and the VRF series to CnT on the indoor PCB and to CnD on the indoor PCB respectively. If a ventilation device is connected been geared
with the motion of indoor device (ON: DC12V output, OFF: 0V output), the ventilation device is operated/stopped.
◎
Set it at “VENT LINK” by selecting “No. 11 VENT LINK SET” from the functional setting by remote control. For details, refer to the “ELECTRIC WIRNG WORK
INSTRUCTION” of indoor unit.
Although the indoor unit fan stops during the defrosting or oil return operation, the booster fan is operating.
Use a total heat exchanger, if necessary.
(Caution) Connect the connector of lover motor within the control box.
35
+4
0
Indoor unit
OA spacer
Use level gauges
as refrence,
adjust the bottom
to the face of the
OA spacer.
Level gauge
T-bar
(Packed together with
the indoor unit)
Ceiling
board
182mm
Suspension bolt
102mm
Unit
Correct
Nut (upper)
Flat washer
Spring washer
Ceiling surface
Nut (lower)
Touch the nut (lower) and
washer without any play
Unit
Wrong
Play is left between the fixture
and the nut (lower) and washer.
CnT (6P)
OR
CnD (2P)
Connector
Control Bord
1
2
3
4
5
6
(Example of circuit)
Insulate #3 to #6
because these are used.
Connector: Made by MOLEX 5264-06
Terminal: Made by MOLEX 5263T
1
(Caution)
2
Connector: Made by MOLEX 5264-02
Terminal: Made by MOLEX 5263T
MC
Power source
MC：Relay
M：Booster fan motor
M
MC
7
Interlocking with the indoor unit fan
6
Installation of panel
5
Installation of indoor unit
4
Installation of OA spacer on the indoor unit
Bracket 1
Control box
OA spacer
Bracket 1
Bracket 2
Bracket 2
Bracket 3
Bracket 3
OA spacer
Bracket 4
Bracket 4
Bracket 1
Bracket 1
Bracket 1
Bracket 1
Temporary
fixing
)(
Bolt
Temporary
fixing
)(
Bolt
OA spacer
Bracket 2
The recess of
OA spacer
The recess of OA spacer
Bracket 2
Bracket 4
Bracket 4
Bracket 3
OA spacer
Bracket 3
Control box
Insulation 2
(Contact closely to
the duct joint and OA
spacer.)
Insulation 2
(Contact closely to
the duct joint and OA
spacer.)
A
Insulation 1
(See section A-A.)
A
A-A
Bend and
contact closely
to the duct joint
and OA spacer.
CnT Conector (the single split series) CnD Conector (the VRF series)
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