Venting requirements (cont’d), Vent pipe diameter and length, Venter (flue) outlet table 2 - venter outlet size – Reznor PDH Option - Installation - Venting Instructions User Manual
Page 2: Figure 1 - venter outlet location
Form I-PDH-V, PN 211409R2, Page 2
2. Vent Pipe Diameter and Length
•
Use only one diameter of vent pipe on an installation.
•
Minimum vent length is 3 feet (1M).
TABLE 1 - Vent Pipe Diameter and Length for Horizontal or Vertical Vent
Vent pipe diameters and maximum vent lengths in
TABLE 1 apply to either a horizontal
or a vertical vent. Add
all straight sections and equivalent lengths for elbows. The total
combined length must not exceed the
Maximum Vent Length.
Venting
Requirements
(cont’d)
3. Venter (Flue) Outlet
TABLE 2 - Venter
Outlet Size
Venter Outlet Attachment Requirements:
Depending on the size of vent pipe as determined in Requirement No. 2, attach either
the vent pipe directly to the collar or a taper-type connector (See
TABLE 1).
FIGURE 1 - Venter
Outlet Location
Venter
Outlet
Sizes 75-150
16-13/16 (427mm)
Sizes 175-400A
17-1/4 (438mm)
Sizes 75-150
20-3/4 (527mm)
Sizes 175-400A
31 (787mm)
NOTE: Clearance from
vent connection must
be 18” (457mm).
Cabinet
Size
PDH
Vent Pipe
Diameter
Maximum Vent
Length
Equivalent
Straight Length
for 90° Elbow
Equivalent
Straight Length
for 45° Elbow
Field-supplied taper-
type connection
required at the venter
outlet
inches
mm
feet
M
feet
M
feet
M
A
75
4
102
30
9.1
4
1.2
2
0.6
None
100
4
102
40
12.2
5
1.5
2.5
0.8
None
B
125
4
102
40
12.2
5
1.5
2.5
0.8
None
150
5
127
35
10.7
5
1.5
2.5
0.8
None
C
175
5
127
35
10.7
5
1.5
2.5
0.8
None
200
5
127
50
15.2
5
1.5
2.5
0.8
None
225
5
127
50
15.2
5
1.5
2.5
0.8
None
D
250
5
127
50
15.2
5
1.5
2.5
0.8
6” to 5” (152 to 127mm)
taper-type reducer
300
6
152
50
15.2
5
1.5
2.5
0.8
None
E
350
6
152
50
15.2
7
2.1
3.5
1.1
None
7
178
50
15.2
4.5
1.4
2.25
0.7
6” to 7”(152 to 178mm)
taper-type increaser
400A
6
152
50
15.2
8
2.4
4
1.2
None
7
178
50
15.2
5
1.5
2.5
0.8
6” to 7”(152 to 178mm)
taper-type increaser
Cabinet Size
A
B
C
D
E
Model PDH
75
100
125
150
175
200
225
250
300
350 400A
Venter Outlet
Diameter
4 inches
5 inches
6 inches
102 mm
127 mm
152 mm
Side View