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506471-01Page 2 of 41 Issue 1034
Model
A
368
14-1/2
A801UH2V/80G1UH2V
B
C
in.
mm
in.
mm
in.
mm
340
13-3/8
330
13
090-12
135-20
533
21
504
19-7/8
495
19-1/2
622
24-1/2
546
23-3/8
584
23
D
in.
mm
248
9-3/4
203
8
121
4-3/4
090-16
110-20
070-12
446
17-1/2
416
16-3/8
406
16
159
6-1/4
090-20
A80UH2V & 80G1UH2V Unit Dimensions - inches (mm)
1
NOTE - 20C and 20D 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. Return air from single side transition will 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 Return Air Base
3. Return Air from bottom and one side.
4. Return air from both sides.
5. Return air from bottom.
2
Flue outlet may be horizontal but furnace must be vented
vertically.
3
Optional external side return air filter kit cannot be used with
the optional RAB Return Air Base.
* Consider sizing requirements for optional IAQ equipment before
cutting side return opening.
FRONT VIEW
SIDE VIEW