5326602-XIM-B-1019
Johnson Controls Ducted Systems
15
Figure 15: ZF120-150 Roof Curb
Figure 16: ZF120-150 Transition Roof Curb
Ductwork
Ductwork should be designed and sized according to the
methods in Manual D of the Air Conditioning Contractors of
America (ACCA) or as recommended by any other recognized
authority such as ASHRAE or SMACNA.
A closed return duct system should be used. This will not
preclude use of economizers or outdoor fresh air intake. The
supply and return air duct connections at the unit should be
made with flexible joints to minimize noise.
The supply and return air duct systems should be designed for
the CFM and static pressure requirements of the job. They
5 0 - 1 / 2
( 1 2 8 5 )
3 0
( 7 6 0 )
2 0
( 5 1 0 )
8 0 - 5 / 8
( 2 0 5 0 )
6
( 1 5 0 )
2 T Y P .
( 5 0 )
I N S U L A T E D D E C K U N D E R
C O M P R E S S O R S E C T I O N
I N S U L A T E D D E C K U N D E R
C O N D E N S E R S E C T I O N
F R O N T
R I G H T
S U P P L Y
R E T U R N
2 0
( 5 1 0 )
N O T E : ( X X X ) I N D I C A T E S
D I M E N S I O N S I N
M I L L I M E T E R S
1 4
( 3 5 5 )
8
( 2 0 5 )
O R
7 6 - 5 / 8
( 1 9 4 5 )
9 4
( 2 3 9 0 )
5 0 - 1 / 2
( 1 2 8 5 )
3 0 - 1 / 2
( 7 7 5 )
6 4 - 1 / 4
( 1 6 3 0 )
5 9 - 1 / 4
( 1 5 0 5 )
1 0
( 2 5 5 )
2 3
( 5 8 5 )
4
( 1 0 0 )
2 6
( 6 6 0 )
8 0 - 5 / 8
( 2 0 5 0 )
2 T Y P
( 5 0 )
F R O N T
R I G H T
S U P P L Y
R E T U R N
