Viessmann VITODENS 100-W Technical Data Manual page 24

Appendix (continued)
CPVC Vent System
3
Vent System
Room Air Independent Operation
(Sealed Combustion Operation)
b
a
Room Air Dependent Operation
b
A
C
a = zero
3
CPVC vent material must be ULC/UL listed, for Category IV boilers. Suggested source: IPEX Inc.
4
Boiler cannot support weight of vent system. Support venting as prescribed in vent manufacturer's installation instructions.
5
Combustion air supply pipe may be made of the following materials: ABS, CPVC, PVC, or stainless steel.
A maximum of 5 elbows may be installed in the vent and air intake system; do not exceed maximum equivalent vent length.
"
Always follow Viessmann Vitodens Venting System Installation Instructions (PN 5285 268).
"
24
I M P O R T A N T :
Do not use any DWV plumbing
pipes to vent this boiler.
Maximum
Equivalent Length
B B
A
or or
B B
A
A
Combustion Air Intake
B
Flue Gas Outlet
Maximum
Equivalent Length
B
A
Combustion Air Intake
B
Flue Gas Outlet
C C
Air Opening
Vent System Diameter
a + b ≦
1 Boiler Vent Adaptor
(included with boiler)
2 Double-Pipe Adaptor
3 Adaptor(s), CPVC
80mm > 3" (order 2 pcs)
3" > 4" (order 2 pcs)
(not shown)
4
4 Venting Support
5 Combustion Air Intake Vent Material
Allowable materials: see note below
6 ULC/UL listed
5
CPVC Vent Material
45° Elbow EqL=3ft / 0.9m
90° Elbow EqL=5ft / 1.5m
7 Bird Screen
(order 2 pcs)
or
Horizontal Vent Termination
a + b ≦
1 Boiler Vent Adaptor
(included with boiler)
2 Flue Adaptor, CPVC
60mm > 2"
3 Adaptor(s), CPVC
2" > 3"
3" > 4"
(not shown)
4
4 Venting Support
6 ULC/UL listed
5
CPVC Vent Material
45° Elbow EqL=3ft / 0.9m
90° Elbow EqL=5ft / 1.5m
7 Bird Screen
2" 3" 4"
n.a. 52 66
16 20
— —
—
7186 032 7186 032
—
7134 770 7134 770
and
— field
supplied
— field field
supplied supplied
field field
5
supplied supplied
— field field
supplied supplied
—
7134 781 7134 782
7134 772 7134 773
33 52 66
10 16 20
— —
7134 769 7134 769 7134 769
field field
—
supplied supplied
and
— — field
supplied
field field field
supplied supplied supplied
field field field
supplied supplied supplied
7134 780 7134 781 7134 782
ft
m
Order No.
—
Order No.
Order No.
Order No.
Order No.
Order No.
Order No.
Order No.
Order No.
ft
m
— Order No.
Order No.
Order No.
Order No.
Order No.
Order No.
Order No.