Bryant PLUS 90X 353AAV Product Data page 18

MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH - - FT (M) WITH AND
WITHOUT INSULATION IN WINTER DESIGN TEMPERATURE AMBIENT*
WINTER DESIGN
FURNACE SIZE TEMPERATURE
040
060
080
100
120
* Pipe length ft (M) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed total allowable pipe length
as specified in Table.
† Insulation thickness based on R value of 3.5 per in.
MAX PIPE
DIAMETER
IN (mm)
°F 〈°C)
20 (---7) 1.5 (38)
0 (---18) 1.5 (38)
---20 (---29) 1.5 (38)
20 (---7) 2 (51)
0 (---18) 2 (51)
---20 (---29) 2 (51)
20 (---7) 2 (51)
0 (---18) 2 (51)
---20 (---29) 2 (51)
20 (---7) 2 (51)
0 (---18) 2 (51)
---20 (---29) 2 (51)
20 (---7) 2.5 (64)
0 (---18) 2.5 (64)
---20 (---29) 2.5 (64)
20 (---7) 2.5 (64)
0 (---18) 2.5 (64)
---20 (---29) 2.5 (64)
20 (---7) 3 (76)
0 (---18) 3 (76)
---20 (---29) 3 (76)
20 (---7) 3 (76)
0 (---18) 3 (76)
---20 (---29) 3 (76)
20 (---7) 4 (102)
0 (---18) 4 (102)
---20 (---29) 4 (102)
WITHOUT
INSULATION
FT (M)
51 (16)
28 (9)
16 (5)
45 (14)
22 (7)
10 (3)
65 (20)
35 (11)
20 (6)
55 (17)
48 (15)
30 (9)
70 (21)
47 (14)
28 (9)
40 (12)
40 (12)
38 (12)
70 (21)
50 (15)
28 (9)
70 (21)
61 (19)
37 (11)
70 (21)
48 (15)
23 (7)
18
WITH 3/8–IN. OR THICKER
INSULATION†
FT (M)
70 (21)
70 (21)
70 (21)
70 (21)
70 (21)
58 (18)
70 (21)
70 (21)
70 (21)
55 (17)
55 (17)
55 (17)
70 (21)
70 (21)
70 (21)
40 (12)
40 (12)
40 (12)
70 (21)
70 (21)
70 (21)
70 (21)
70 (21)
70 (21)
70 (21)
70 (21)
70 (21)