Temp-O-Matic TMP-105 Manual page 10

TMP
– Furnace Manual
Oil Furnaces
3 Connect supply and return ducts
Duct sizing
(continued)
Table 5 Typical duct sizing for systems not over 100 feet equivalent length – round or flat oval galvanized
(For approximately 0.10 inch w.c. in a typical residential installation of galvanized metal duct)
Flat oval duct equivalent sizes
Round
duct Minimum width (inches) for duct heights (inches) of :
CFM
diameter
(inches)
45
4
65 5
100 6
150 7
200
8
250 9
300 9
400 10
500
12
600
12
700 12
800 14
900
14
1000
16
1100 16
1200 16
1300 16
1400
18
1500 18
1600 18
1700 18
1800
18
1900
20
2000 20
2200 20
2400
22
2600
22
2800 22
3000 22
3500
24
4000
26
Do not apply this table for duct systems over approximately 100 equivalent feet in length. For longer systems or systems
using other duct materials, refer to ACCA Manual D. Incorrectly sizing duct systems can result in unsafe or uncomfortable
operation.
10
Typical duct sizing
3 4 5 6
x x x x
6 5 - -
8 6 - -
11 8 7 -
16 11 9 8
21 15 11 10
26 18 14 11
30 20 16 13
40 26 20 16
49 32 24 19
59 38 28 22
69 44 32 25
- 50 36 29
- 56 41 32
- 63 45 35
- 69 49 38
- 75 53 41
- - 58 44
- - 62 47
- - 66 50
- - 71 54
- - - 57
- - - 60
- - - 63
- - - 67
- - - 73
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
(continued)
7 8 9 10
x x x x
- - - -
- - - -
- - - -
- - - -
8 - - -
10 9 - -
11 10 - -
14 12 11 -
16 14 13 12
19 16 15 13
21 18 16 15
24 20 18 16
26 22 20 18
29 24 22 19
31 26 23 21
33 28 25 22
36 30 26 24
38 32 28 25
41 34 30 26
43 36 31 28
46 38 33 29
48 40 35 31
50 42 36 32
53 44 38 33
58 48 41 36
63 52 44 39
68 56 48 42
- 60 51 44
- 64 54 47
- - 63 54
- - 71 61
12 14 16 18
x x x x
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
13 - - -
14 - - -
15 - - -
17 15 - -
18 16 - -
19 17 - -
20 18 - -
21 18 17 -
22 19 18 -
23 20 18 -
24 21 19 -
25 22 20 -
26 23 21 19
27 24 21 20
29 25 23 21
32 27 24 22
34 29 25 23
36 30 27 24
38 32 28 26
43 36 32 28
48 40 35 31
670-000-004/1010
20
x
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
21
22
23
24
26
29