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Unit Dimensions
Flue Condensate Trap Assembly
Furnished for external
field installation
on either side of unit.
(See installation instructions
for additional
information.)
A
B
AIR FLOW
3/4
C
(19)
1
Bottom Return
Air Opening
FRONT VIEW
Unit
070-B12
090-C12
090-C16
090-C20
110-C20
135-D20
Page 2 of 74
7
(178)
9/16 (14)
2
OPTIONAL
SIDE RETURN
AIR FILTER KIT
(Either Side)
33
(838)
14-3/4
(375)
16
(406)
5/8
(16)
3/4
(19)
A
in.
mm
17-1/2
446
21
533
24-1/2
622
3-1/4
(83)
1-7/8 (48)
D
COMBUSTION
AIR INTAKE
2
OPTIONAL
SIDE RETURN
AIR FILTER KIT
(Either Side)
1-1/2 (38)
Front Panel
6-9/16 (167)
Left
9 (229)
Right
12-5/8 (321)
(Either Side)
ELECTRICAL
INLET
(Either Side)
3-1/4
(83)
B
in.
mm
16-3/8
416
19-7/8
505
23-3/8
594
Issue 2346
EXHAUST AIR
OUTLET
SUPPLY AIR
OPENING
23-3/4
(603)
25
(635)
TOP VIEW
27-3/4
(705)
19-7/16
(494)
2 (51)
(Either Side)
GAS PIPING INLET
(Either Side)
CONDENSATE
TRAP CONNECTION
(Either Side)
6-1/2 (165)
(Either Side)
23
(584)
1
Side Return
Air Opening
(Either Side)
1-15/16 (49)
23-1/2
(597)
1
Bottom Return
Air Opening
SIDE VIEW
C
in.
mm
16
406
19-1/2
495
23
584
9/16
(14)
1-1/2
(38)
14
(356)
D
in.
mm
7-5/8
194
9-3/8
238
11-1/8
283
508364-01
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