33
Installation Requirements
SECTION IV- INSTALLATION REQUIREMENTS
3” to 2” (60 mm) Vent/Combustion Air Transition
This section outlines the installation of Venting and
Combustion Air for the PRESTIGE 60, 110 and
EXCELLENCE when the vent system must transition
from the 3” outlet of the boiler to the 2” (60 mm)
vent system.
•
The transition from 3” vent system to 2” (60 mm)
vent system must occur at the boiler vent outlet.
•
The transition from 3” vent to 2” (60 mm) vent must
occur in a vertical run only.
Transition of 3” vent to 2” (60 mm
)
vent in a horizon-
tal run may result in pooling of the condensate and
potential vent blockage. Failure to comply can result
in death, serious injury or substantial property dam-
age.
•
Use a 3 x 2 bell reducer to make the transition to 2”
CPVC/PVC vent, see Figures 33 and 34.
* Use a 3 (80 mm) appliance vent adapter and 3” (80
mm) to 2” (60 mm) reducer to make the transition to
2” (60 mm) Polypropylene vent see Table 2 on page
5.
•
The 2” (60 mm) vent should not transition back to 3”
(80 mm) vent at any point in the vent system.
•
The PVC combustion air piping shall transition from 3”
to 2” using a 3 x 2 bell reducer and shall transition in
a similar manner as the vent system.
•
The total equivalent length of the 3” (80 mm) vent
and 2” (60 mPVC m) vent combined shall not
exceed the length listed for a 2” (60 mm) vent sys-
tem Table 8, page 8.
•
The total equivalent length of 3” (80 mm) and 2” (60
mm) combustion air piping combined shall not
exceed the length listed for combustion air in Table
8, page 8.
NOTICE
WARNING
2 Inch Vent Pipe
PVC or CPVC
Material
2 Inch Vent Pipe
Min. 7 Feet Length
CPVC Material
3 x 2 Bell Reducer
CPVC Material
3 Inch Stub Vent Pipe
CPVC Material
2” CPVC/PVC Venting System Vertical
Fig. 33:
2 Inch Vent Pipe
PVC or CPVC
Material
2 Inch Stub Vent Pipe
CPVC Material
2 Inch 90º Elbow
Long Sweep
CPVC Material
3 x 2 Bell Reducer
CPVC Material
3 Inch Stub Vent Pipe
CPVC Material
2” CPVC/PVC Venting System Horizontal
Fig. 34:
Summary of Contents for Prestige CPVC
Page 42: ...Notes...
Page 43: ...Notes...
