Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 356

④ Installation of OA spacer on 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.)
1-1. When installing OA spacer before hanging the indoor unit
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.
Bracket 2
Bracket 1
OA spacer
Control box
② Fix the brackets 3 and 4 (2 pieces each) with bolts.
Bracket 4
Bracket 3
OA spacer
2. Applying insulation
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.
A
Insulation 2 A
(Contact closely to
the duct joint and OA
spacer.)
Bracket 2
Bracket 1
Bracket 4
Bracket 3
Insulation 2
Bend and
(Contact closely to
contact closely
the duct joint and OA
to the duct joint
spacer.)
and OA spacer.
Insulation 1
(See section A-A.)
-
1-2. When installing OA spacer after 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.
Bolt
( )
Temporary
fixing
Bracket 1
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)
Bracket 1
The recess of
OA spacer
Bracket 2
③ Fix the brackets 3 and 4 (2 pieces each) with bolts.
Bracket 3
A-A
355
-
'17 • SCM-T-225
Control box
Bolt
( )
Temporary
Bracket 1
fixing
OA spacer
Bracket 2
Bracket 1
The recess of OA spacer
OA spacer
Bracket 4
Bracket 4 Bracket 3