24
Figure 11: CPVC/PVC Expansion Loop and Offset
IV. Venting
B. CPVC/PVC Venting (continued)
i.
Vent Piping
Running PVC vent pipe inside Enclosures
and through Walls:
• PVC vent pipe must be installed in such
way as to permit adequate air circulation
around the outside of the pipe to prevent
internal wall temperature rising above
ANSI Z21.13 standard specified limit.
• Do not enclose PVC venting. Use higher
temperature rated CPVC pipe in enclosed
spaces or to penetrate combustible or
non-combustible walls.
• PVC vent pipe may not be used
to penetrate combustible or non-
combustible walls unless all following
three conditions are met simultaneously
(see Figure 12):
- The wall penetration is at least 66
in. (1680 mm) from the boiler as
measured along the vent
- The wall is 12 in. (300 mm) thick or
less
- An air space of at least of that shown
in Figure 12 is maintained around
outside of the vent pipe to provide
air circulation
• If above three conditions cannot be
met simultaneously when penetrating
a combustible wall, use a single wall
thimble [Thermal Solutions part numbers
102181-01 (4 in.) and 103419-01 (6 in.)].
• Thimble use is optional for non-
combustible wall.
• Insert thimble into cut opening from
outside. Secure thimble outside flange to
wall with nails or screws and seal ID and
OD with sealant material.
Figure 12: Wall Penetration Clearances
for PVC Vent Pipe
Table 8: Expansion Loop Lengths
Nominal
Pipe
Dia. (In.)
Length of
Straight Run
Loop Length
“L”
ft.
m
in.
mm
4
20
6.1
60
1520
30
9.1
74
1880
40
12
85
2159
50
15
95
2413
60
18
104
2642
6
20
6.1
73
1850
30
9.1
90
2290
40
12
103
2620
50
15
116
2950
60
18
127
3230
Содержание APEX
Страница 6: ...6 I Product Description Specifications and Dimensional Data continued Figure 1A Apex Model APX425 ...
Страница 7: ...7 Figure 1B Apex Model APX525 I Product Description Specifications and Dimensional Data continued ...
Страница 9: ...9 I Product Description Specifications and Dimensional Data continued Figure 1D Apex Model APX825 ...
Страница 57: ...57 VIII Electrical continued Figure 26 Ladder Diagram ...
Страница 58: ...58 VIII Electrical continued ...
Страница 59: ...59 Figure 27 Wiring Connections Diagram VIII Electrical continued ...
Страница 68: ...68 IX System Start up continued Apex Series Operating Instructions Figure 34 Operating Instructions ...
Страница 105: ...105 ...
Страница 109: ...109 XIII Repair Parts continued APX625 APX725 and APX825 APX825 shown ...
Страница 112: ...112 XIII Repair Parts continued APX425 and APX525 ...
Страница 114: ...114 XIII Repair Parts continued APX625 APX725 and APX825 ...
Страница 122: ...122 ...
Страница 123: ...123 ...
