Cpvc/Pvc Venting - Burnham Apex APX399 Installation, Operating And Service Instructions

iV. Venting
A. General Guidelines (continued)
q. The minimum horizontal distance between any
adjacent individual module (boiler) roof vent
terminations is one (1) foot.
7. Use noncombustible ¾" pipe strap to support
horizontal runs and maintain vent location and
slope while preventing sags in pipe. Do not restrict
thermal expansion or movement of vent system.
Maximum support spacing four (4) feet. Avoid low
spots where condensate may pool. Do not penetrate
any part of the vent system with fasteners.
8. Maintain minimum clearance to combustible
materials. See Figure 2 for details.
9. Enclose vent passing through occupied or
unoccupied spaces above boiler with the material
having a fire resistance rating of at least equal to the
rating of adjoining floor or ceiling.
Note: For one or two family dwellings, fire
resistance rating requirement may not need to be
met, but is recommended.
10. Multiple individual module vertical vent pipes may
be piped through a common conduit or chase so that
one roof penetration may be made.
Table 5a: CPVC/PVC Vent & air intake Components included With Boiler
Vent & air intake Components
4" Schedule 40 PVC Tee (Vent or Air Intake Terminals)
6" Schedule 40 PVC 90° Elbow (Vent or Air Intake
Terminal)
4" Stainless Steel Rodent Screen
6" Stainless Steel Rodent Screen
4" x 30" Schedule 40 CPVC Pipe
6" x 30" Schedule 40 CPVC Pipe
4" Schedule 80 CPVC 90° Elbow
6" Schedule 80 CPVC 90° Elbow
4 oz. Bottle of Transition Cement
4 oz. Bottle of Primer
4" Vent/4" Combustion Air CPVC/PVC Connector
6" Vent/6" Combustion Air CPVC/PVC Connector
4" Vent/4" Combustion Air CPVC/PVC Connector
Gasket
6" Vent/6" Combustion Air CPVC/PVC Connector
Gasket
18
B.

CPVC/PVC Venting

all CPVC vent components (supplied with boiler)
must be used for near-boiler vent piping before
transitioning to Schedule 40 PVC pipe (aSTM
2665) components for remainder of vent system.
CPVC vent components must be used within
any interior space where air cannot circulate
freely, such as air inside a stud wall, and in
any boiler closet or chase way.
When using the CPVC/PVC vent options, the
use of CPVC is required when venting in vertical
or horizontal chase ways.
all condensate that forms in the vent must
be able to drain back to the boiler.
1. Components and Length Restrictions
a. See Table 5A for CPVC/PVC Vent & Air Intake
Components included with boiler, Table 5B for
CPVC/PVC Vent and Air Intake Components
(Installer Provided) required for Optional
aPX399 and aPX500
Part
Standard Termination
number
Vent Kit
(P/n 102189-03)
includes
102190-02
103313-01
102191-02
102191-03
102193-02
103267-01
102192-02
103268-01
102195-01
102194-01
102183-03
103270-01
102185-02
103248-01
Warning
Warning
Quantity
Standard Termination
(P/n 103253-01)
2
N/A
2
N/A
1
N/A
1
N/A
1
1
1
N/A
1
N/A
aPX800
Vent Kit
includes
N/A
2
N/A
2
N/A
1
N/A
1
N/A
1
N/A
1