OC194-48
BRANCH DUCT (installation at site)

1. Branch Duct Installation Procedure 2. Branch Duct Installation

To discharge air from a branch duct, install it during the initial installation.

Install branch duct at site by following procedure

(1) Remove insulation along the broken-lines on unit

surface at the back-side of the indoor unit. Knock

out the branch duct connecting point.

(2) Secure flange, procured locally, by twelve ST

screws (4.0 dia).

(3) Connect flange to duct.

(4) Tear off the insulation material on the surface of the

main body of the unit, push in the insulation and

secure it air tightly.

3. Air flow & Static Pressure Characteristics of Branch Duct

■The air flow and static pressure characteristics of the branch duct when installing a standard panel (4 direction discharge

or when applying a 2-direction discharge is as follows.

Opening measurements for PL30/36/42FK air within ( ).

Standard:4 direction discharge 2 direction discharge

4 direction discharge (11-13/16OO4 directions). 2 direction discharge (17-11/16OO2 directions).

Branch duct
3-15/16
11-13/16
(11-13/16)
Branch duct
3-15/16
17-11/16
11-13/16
(27-9/16)
11-13/16
(25-9/16)
Static pressure
[in.W.GO10–2]
12
Hi
Lo
Hi
Lo
8
4
0 50 100 150
11-13/16O4 directions
Air capacity
[CFM]
Static pressure
[in.W.GO10–2]
12
8
4
0 50 100 150
11-13/16O4 directions
Air capacity
[CFM]
Hi
Lo
Static pressure
[in.W.GO10–2]
12
8
4
0 50 100 150
16 17-11/16O2 directions
Air capacity
[CFM]
Hi
Lo
Static pressure
[in.W.GO10–2]
12
8
4
0 50 100 150 200
16 17-11/16O2 directions
Air capacity
[CFM]
●PL18FK21●PL24FK21●PL24FK21●PL18FK21