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Unit Dimensions
NOTE - 5C and 5D size units installed in upflow applications
1
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.
Flue outlet may be horizontal but furnace must be vented
2
vertically.
Optional external side return air filter kit cannot be used with
3
the optional RAB Return Air Base.
*
Consider sizing requirements for optional IAQ equipment before
cutting side return opening.
33
(838)
Capacity
045-3A
070-3A
070-3B
090-4B
090-5C
110-5C
135-5D
Page 2 of 36
A
B
Front View
A
in.
mm
14-1/2
368
17-1/2
446
21
533
24-1/2
622
Top
View
Right Side
View
30
(762)
26
(660)
23-7/8
(606)
Bottom
View
B
in.
mm
13-3/8
340
16-3/8
416
19-7/8
504
23-3/8
546
Issue 2209
D
28-3/8 (721)
14
(356)
15-1/2
(394)
3-1/4
(83)
C
C
in.
mm
13
330
16
406
19-1/2
495
23
584
25 (635)
19-1/2 (495)
23
(584)
23-1/2
(597)
D
in.
mm
4-3/4
121
6-1/4
159
8
203
9-3/4
248
507330-03G / 31-5000662
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