036-21489-001-C-1004
Unitary Products Group 27
DUCT COVERS - Units are shipped with the bottom
duct openings covered. An accessory flange kit is available for con-
necting side ducts.
For bottom duct applications:
1. Remove the side panels from the supply and return
air compartments to gain access to the bottom
supply and return air duct covers.
2. Remove and discard the bottom duct covers. (Duct
openings are closed with sheet metal covers except
when the unit includes a power exhaust option. The
covering consists of a heavy black paper composition.)
3. Replace the side supply and return air compartment
panels.
For side duct applications;
1. Replace the side panels on the supply and return air
compartments with the accessory flange kit panels.
2. Connect ductwork to the duct flanges on the rear of
the unit.
OUTDOOR AIR PANEL SIZE
20 TON UNITS 32-1/2" X 43"
FIGURE 7 : DETAIL “X” ACCY. SIDE SUPPLY & RETURN AIR OPENINGS
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,
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FIGURE 8 : DETAIL “Y” UNIT WITH RAIN HOODS
S U P P L Y
A I R
C O M P A R T M E N T
P O W E R
E X H A U S T
R A I N
H O O D
( o n
R e t u r n
A i r
C o m p a r t m e n t )
E C O N O M I Z E R
M O T O R I Z E D
D A M P E R
R A I N H O O D
( o n O u t d o o r A i r C o m p a r t m e n t )
E C O N O M I Z E R
/
M O T O R I Z E D
D A M P E R
A N D
P O W E R
E X H A U S T
R A I N
H O O D S
F I X E D
O U T D O O R
A I R
I N T A K E
H O O D
( l o c a t e d o n
R e t u r n A i r
C o m p a r t m e n t )
1 " C O N D E N S T A T E
D R A I N
( M u s t b e t r a p p e d )
R E A R V I E W
L H V I E W
D E T A I L " Y "
U N I T W I T H R A I N H O O D S
3 6 "
6 6 - 1 / 2 "
9 2 "
3 6 - 1 / 4 "
5 "
3 4 - 1 / 4 "
1 6 - 1 / 8 "
2 "
FIGURE 9 : CENTER OF GRAVITY
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