508297-01
Page 2 of 57
Issue 2219
Front View
Top View
Side View
3/4
(19)
B
33
(838)
A
1
Bottom Return
Air Opening
9/16
(14)
Air Flow
C
3/4
(19)
14-3/4
(375)
16
(406)
2
Optional
Side Return
Air Filter Kit
(either side)
5/8
(16)
19-7/16 (494)
27-3/4 (705)
6-1/2 (165)
(either side)
14
(356)
Condensate
Trap Connection
(either side)
Electrical Inlet
(either side)
9 (229) Right
6-9/16 (167) Left
Gas Piping Inlet
(either side)
2 (51) (either side)
9/16
(14)
1 (25)
Front Panel
1
Bottom Return
Air Opening
3-1/4
(83)
12-5/8 (321)
(either side)
23
(584)
1
Side Return
Air Opening
(either side)
1-15/16 (49)
1-1/2
(38)
23-1/2 (597)
Supply Air
Opening
2 (51)
2-7/8
(73)
Exhaust Air
Outlet
Combustion
Air Intake
2
Optional
Side Return
Air Filter Kit
(either side)
23-3/4 (603)
25 (635)
3-3/8
(86)
D
1
NOTE
- C*20 and D*20 (5 Ton) size units installed in upflow
applications that require air volumes of 1800 cfm (850 L/s) or greater
must have one of the following:
1. Single side return air with transition, to accommodate 20 x 25 x 1
in. (508 x 635 x 25 mm) cleanable air filter. (Required to maintain
proper air velocity.)
2. Single side return air with optional “RAB”
R
eturn
A
ir
B
ase.
3. Bottom return air.
4. Return air from both sides.
5. Bottom and one side return air.
See “Blower Performance Tables” for additional information.
2
Optional External Side Return Air Filter kit is not for use with optional
Return Air Base.
* Consider sizing requirements for optional IAQ equipment before
cutting side return opening.
Unit Dimensions
Model
A
B
C
D
in.
mm
in.
mm
in.
mm
in.
mm
030-08
045-12
070-12
17-1/2
446
16-3/8
416
16
406
7-5/8
194
090-16
110-20
21
533
19-7/8
505
19-1/2
495
9-3/8
238
135-20
24-1/2
622
23-3/8
594
23
584
11-1/8
283