Allied 95G1UH040BE12X, Запасные части

Страница: 20 / 46

507762-01 Issue 1907 Page 20 of 46
Table 6.
Maximum Allowable Exhaust Vent Lengths With Furnace Installed in a Closet or Basement Using Ventilated Attic or Crawl
Space For Intake Air in Feet
Standard Termination at Elevation 0 - 4500 ft
Number of 90°
Elbows Used
2" Pipe 3" Pipe
Model Model
040 060 080 100 040 060 080 100
1 71 56 34 14 118 117 98 98
2 66 51 29 9 113 112 93 93
3 61 46 24 4 108 107 88 88
4 56 41 19
n/a
103 102 83 83
5 51 36 14 98 97 78 78
6 46 31 9 93 92 73 73
7 41 26 4 88 87 68 68
8 36 21
n/a
83 82 63 63
9 31 16 78 77 58 58
10 26 11 73 72 53 53
NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length
calculation.
* When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible.
TRANSITION
2”
2”
2”
3”
2”
2”
or
DO NOT transition
from smaller to larger
pipe in horizontal runs
of exhaust pipe .
EXHAUST
*2”
INTAKE
TRANSITION
3”
*2”
EXHAUST INTAKE
2”
Appliance
Adaptor
Appliance
Adaptor
Figure 26. Typical Exhaust and Intake Pipe Connections in Upflow Direct Vent Applications