Bryant 355BAV - Page 32

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Table 8 – Maximum Allowable Pipe Length -- Ft. (M)
VARIABLE SPEED VENT SIZING TABLE
ALTITUDE
FT. (M)
UNIT SIZE
(BTUH)
Termination
Ty pe
D i r e c t & N o n ---
Direct Pipe
Dia.
In. (mm)*
NUMBER OF 90_ ELBOWS
1 2 3 4 5 6
0 to 2000
(0 to 610)
60,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 50 (15) 45 (14) 40 (13) 35 (11) 30 (9) 25 (8)
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
80,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 30 (9) 25 (8) 20 (6) 15 (5) 10 (3) 5(2)
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
100,000
2 P i p e o r 2 --- In .
(51) Concentric
2 (51) 45 (14) 40 (13) 35 (11) 30 (9) 25 (8) 20 (6)
2---1/2 (64) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
120,000
2 P i p e o r 3 --- In .
(76) Concentric
2---1/2 (64) 10 (3) NA NA NA NA NA
3 (76) 35 (11) 30 (9) 15 (5) NA NA NA
3 (76)† 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
ALTITUDE
UNIT SIZE
(BTUH)
Termination
Ty pe
D i r e c t & N o n ---
Direct Pipe
Dia. In. (mm)*
NUMBER OF 90_ ELBOWS
1 2 3 4 5 6
2001 to 3000
(610 to 914)
60,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 45 (14) 40 (13) 35 (11) 30 (9) 25 (8) 20 (6)
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
80,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 26 (8) 21 (6) 16 (5) 11 (3) 6(2) NA
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
100,000
2 P i p e o r 2 --- In .
(51) Concentric
2 (51) 40 (12) 35 (11) 30 (9) 25 (8) 20 (6) 15 (5)
2---1/2 (64) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
120,000
2 P i p e o r 3 --- In .
(76) Concentric
3 (76) 31 (9) 26 (8) 12 (4) NA NA NA
3 (76)† 63 (19) 62 (19) 62 (19) 61 (19) 61 (19) 61 (19)
ALTITUDE
UNIT SIZE
(BTUH)
Termination
Ty pe
D i r e c t & N o n ---
Direct Pipe
Dia. In. (mm)*
NUMBER OF 90_ ELBOWS
1 2 3 4 5 6
3001 to 4000
(914 to 1219)
60,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38)
42 (13) 37 (11) 32 (10) 27 (8) 22 (7) 17 (5)
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
80,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 25 (8) 20 (6) 15 (5) 10 (3) 5(2) NA
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
100,000
2 P i p e o r 2 --- In .
(51) Concentric
2 (51) 38 (12) 33 (10) 28 (9) 23 (7) 18 (6) 13 (4)
2---1/2 (64) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
120,000
2 P i p e o r 3 --- In .
(76) Concentric
3 (76) 29 (9) 24 (7) 10 (3) NA NA NA
3 (76)† 59 (18) 59 (18) 58 (18) 57 (17) 57 (17) 56 (17)
ALTITUDE
UNIT SIZE
(BTUH)
Termination
Ty pe
D i r e c t & N o n ---
Direct Pipe
Dia. In. (mm)*
NUMBER OF 90_ ELBOWS
1 2 3 4 5 6
4001 to 5000‡
(1219 to 1524)
60,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 40 (12) 35 (11) 30 (9) 25 (8) 20 (6) 15 (10)
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
80,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 23 (7) 18 (6) 13 (4) 8(2) NA NA
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 68 (21)
100,000
2 P i p e o r 2 --- In .
(51) Concentric
2 (51) 36 (11) 31 (9) 26 (8) 21 (6) 16 (5) 11 (3)
2---1/2 (64) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
120,000
2 P i p e o r 3 --- In .
(76) Concentric
3 (76)† 56 (17) 55 (17) 54 (17) 53 (16) 52 (16) 52 (16)
ALTITUDE
UNIT SIZE
(BTUH)
Termination
Ty pe
D i r e c t & N o n ---
Direct Pipe
Dia. In. (mm)*
NUMBER OF 90_ ELBOWS
1 2 3 4 5 6
5001 to 6000‡
(1524 to 1829)
60,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 37 (11) 32 (10) 27 (8) 22 (7) 17 (5) 12 (4)
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
80,000
2 P i p e o r 2 --- In .
(51) Concentric
1---1/2 (38) 22 (7) 17 (5) 12 (4) 7(2) NA NA
2 (51) 70 (21) 70 (21) 70 (21) 70 (21) 68 (21) 63 (19)
100,000
2 P i p e o r 2 --- In .
(51) Concentric
2 (51) 33 (10) 28 (9) 23 (7) 18 (6) 13 (4) 8(2)
2---1/2 (64) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21) 70 (21)
120,000
2 P i p e o r 3 --- In .
(76) Concentric
3 (76)† 53 (16) 52 (16) 50 (15) 49 (15) 48 (15) 47 (14)
*See notes on next page.
355BAV