507713-01
Page 2 of 32
Issue 1623
GUH80A Unit Dimensions - inches (mm)
1
NOTE
- 5C and
5D 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) air filter.
2. Single side return air with optional RAB Return Air
Base
3. Bottom return air.
4. Return air from both sides.
5. Bottom and one side return air.
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
Model Number
A
B
C
D
GUH80A
in.
mm
in.
mm
in.
mm
in.
mm
045-3
14-1/2
368
13-3/8
340
13
330
4-3/4
121
070-2
070-3
090-3
17-1/2
446
16-3/8
416
16
406
6-1/4
159
090-4
110-4
21
533
19-7/8
504
19-1/2
495
8
203
110-5
135-5
24-1/2
622
23-3/8
546
23
584
9-3/4
248
