DUCT COVERS - Units are shipped with the bottom
duct openings covered. An accessory flange kit is avail-
able for connecting 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.
FIG. 10 - DIMENSIONS & CLEARANCES - 15 & 20 TON
RETURN AIR
OUTDOOR AIR
(Economizer)
SUPPLY AIR
CONDENSER AIR
R E T U R N
A I R
O U T D O O R
A I R
S U P P L Y
A I R
G A U G E L I N E
A C C E S S
C O M P R E S S O R
A C C E S S
S U P P L Y A I R
A C C E S S
C O N D E N S E R S E C T I O N
R E T U R N A I R
A C C E S S
O U T D O O R A I R
C O M P A R T M E N T
A C C E S S
1 " N P T F E M A L E
C O N D . D R A I N
C O N N E C T I O N
F I L T E R
A C C E S S
D O T P L U G
( F o r p r e s s u r e
d r o p r e a d i n g )
E V A P O R A T O R
S E C T I O N
4 0 - 1 / 2 "
2 8 - 5 / 8 " ( 1 5 T o n s )
3 9 - 5 / 8 " ( 2 0 T o n s )
2 7 - 3 / 4 "
5 - 1 / 8 "
1 8 - 5 / 8 "
5 - 1 / 2 "
4 0 - 3 / 8 "
R E A R
V I E W
DETAIL “X”
(ACCESSORY SIDE SUPPLY AND RETURN AIR OPENINGS)
Front
36"
Back
24" (Less Economizer)
49" (With Economizer)
Left Side (Filter Access)
24" (Less Economizer)
36"
3
(With Economizer)
Right Side (Cond. Coil)
36"
Below Unit
1
2
0"
Above Unit
2
72" With 36" Maximum
Horizontal Overhang
(For Condenser Air
Discharge Outlet)
1Units (applicable in U.S.A. only) may be installed on combustible floors
made from wood or class A, B or C roof covering material.
2
Units must be installed oudoors. Overhanging structures or shrubs should
not obstruct condenser air discharge outlet.
3
If economizer is factory installed, the assembled hood kit must be removed
prior to final installation. This hood is 54" long.
NOTE:
A one-inch clearance must be provided between any combustible material
and the supply air ductwork for a distance of 3 feet from the unit.
The products of combustion must not be allowed to accumulate within a
confined space and recirculate.
Locate unit so that the vent air outlet hoods are at least:
•
Three (3) feet above any forced air inlet located within 10 horizontal feet
(excluding those integral to the unit).
•
Four (4) feet below, 4 horizontal feet from, or 1 foot above any door or gravity
air inlet into the building.
•
Four (4) feet from electric meters, gas meters, regulators and relief equip-
R E T U R N
A I R
S U P P L Y
A I R
B O T T O M S U P P L Y
A N D R E T U R N
A I R O P E N I N G S
( S e e N o t e )
( B )
P O W
E R W
I R I N G
E N T R Y
( A )
C O N T R O L W
I R I N G
E N T R Y
N O T E :
F o r c u r b m o u n t e d u n i t s , r e f e r t o t h e c u r b h a n g e r
d i m e n s i o n s o f t h e c u r b f o r t h e p r o p e r s i z e o f t h e
s u p p l y a n d r e t u r n a i r d u c t c o n n e c t i o n s .
U N I T B A S E W
I T H R A I L S
S h o w n s e p a r a t e l y t o i l l u s t r a t e
B o t t o m D u c t o p e n i n g s , P o w e r
a n d G a s P i p i n g C o n n e c t i o n
l o c a t i o n s
1 2 - 1 / 2 "
9 - 1 / 4 "
8 - 1 / 8 "
9 - 3 / 4 "
3 - 3 / 4 "
( B )
P O W
E R W
I R I N G
E N T R Y
( A )
C O N T R O L W
I R I N G
E N T R Y
9 2 "
C O N D E N S E R
C O I L S
O P T I O N A L
C O I L G U A R D
C O M P R E S S O R
A C C E S S
( S e e d e t a i l " X " )
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 ,
F I X E D O U T D O O R I N T A K E A I 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
( S e e d e t a i l " Y " )
F I E L D - S U P P L I E D
D I S C O N N E C T S W
I T C H
L O C A T I O N
B L O W
E R
A C C E S S
B L O W
E R M O T O R
A C C E S S
B L O W
E R
C O M P A R T M E N T
A C C E S S
( A u x i l i a r y )
D O T P L U G
( F o r p r e s s u r e
D r o p R e a d i n g )
F R O N T
V I E W
C O N T R O L B O X
A C C E S S
2 1 "
5 "
9 - 3 / 4 "
1 1 - 1 / 2 "
2 - 3 / 4 "
2 1 - 1 / 2 "
3 3 "
3 5 "
5 - 7 / 8 "
4 6 - 5 / 8 "
7 - 1 / 8 "
6 - 3 / 8 "
V E N T A I R
O U T L E T
H O O D S
C O M B U S T I O N
A I R I N L E T
H O O D
G A S H E A T
A C C E S S
( C )
G A S S U P P L Y
E N T R Y
4 6 - 5 / 8 "
1 1 - 1 / 8 "
( D )
G A S S U P P L Y
E N T R Y
4 8 - 5 / 8 " ( 1 5 T O N )
5 2 - 5 / 8 " ( 2 0 T O N )
1 2 - 1 / 4 " ( 1 5 T O N )
3 5 - 1 / 4 " ( 2 0 T O N )
1 2 5 - 1 / 4 " ( 1 5 T O N )
1 3 6 - 1 / 4 " ( 2 0 T O N )
All dimensions are in inches. They are sub-
ject to change without notice. Certified di-
mensions will be provided upon request.
HOLE
OPENING
SIZE
(DIA.)
USED FOR
A
1-1/8" KO
Control
Wiring
Front
3/4" NPS (Fem.)
Bottom
B
3-5/8" KO
Power
Wiring
Front
3" NPS (Fem.)
Bottom
C
2-3/8" KO
Gas Piping (Front)
D
1-11/16" Hole
Gas Piping (Bottom)*
*Opening in the bottom of the unit can be located by the slice
in the insulation.
UTILITIES ENTRY DATA
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 "
CLEARANCES
530.18-N6Y
Unitary Products Group
11
