Burnham Apex APX399 User Manual

22
IV. Venting B. CPVC/PVC Venting (continued)
Table 8: Vent/Combustion Air Pipe Length – Two-Pipe Direct Vent System Options
CPVC/PVC
Polypropylene (PP) or Polypropylene (PP)/PVC
Stainless Steel/PVC or Galvanized Steel)
Vent/Combustion Air Equivalent Length Calculation Work Sheet
Combustion Air Vent
90° Elbow(s) PVC (Installer Supplied) 90° Elbow(s) CPVC (Supplied with Boiler)
Nominal
Diameter,
In.
Quantity
(Pc)
Equivalent
Length, Ft/Pc
Subtotal,
Equivalent
Ft. (A)
Nominal
Diameter,
In.
Quantity
(Pc)
Equivalent Length,
Ft/Pc
Subtotal,
Equivalent Ft.
(D)
4 13 4 1 13 13
6 22 6 1 22 22
45° Elbow(s) PVC (Installer Supplied) 90° Elbow(s) PVC (Installer Supplied)
Nominal
Diameter,
In.
Quantity
(Pc)
Equivalent
Length, Ft/Pc
Subtotal,
Equivalent
Ft. (B)
Nominal
Diameter,
In.
Quantity
(Pc)
Equivalent Length,
Ft/Pc
Subtotal,
Equivalent Ft.
(A)
4 4.5 4 13
6 7.5 6 22
Straight Pipe, PVC (Installer Supplied) 45° Elbow(s) PVC (Installer Supplied)
Nominal
Diameter,
In.
Quantity
(Length,
Ft.)
Equivalent
Length,
Ft/Ft
Subtotal,
Equivalent
Ft. (C)
Nominal
Diameter, In.
Quantity
(Length, Ft.)
Equivalent Length,
Ft/Ft
Subtotal,
Equivalent Ft.
(B)
4 1 4 4.5
6 1 6 7.5
* Total Equivalent Length, Ft. (A+B+C) = 30” (2.5 Ft.) Straight Pipe, CPVC (Supplied with Boiler)
Nominal
Diameter,
In.
Quantity
(Length, Ft.)
Equivalent Length,
Ft/Ft
Subtotal,
Equivalent Ft.
(E)
4 2.5 1 2.5
6 2.5 1 2.5
Straight Pipe, PVC (Installer Supplied)
Nominal
Diameter,
In
Quantity
(Length, Ft.)
Equivalent Length,
Ft/Ft
Subtotal,
Equivalent Ft.
(C)
4 1
6 1
* Total Equivalent Length, Ft. (A+B+C+D+E) =
* Note: Total Equivalent Length Calculated Value Cannot Exceed Max. Equivalent Length Values shown in Table 8.
Vent and Combustion Air Terminals Do Not Count Towards Total Equivalent Length.
Boiler
Model
4” Combustion Air Pipe
(Equivalent Length)
6” Combustion Air Pipe
(Equivalent Length)
4” Vent Pipe
(Equivalent Length)
6” Vent Pipe
(Equivalent Length)
Min. Max. Min. Max. Min. Max. Min. Max.
APX399 30 In. 100 Ft. 30 In. 100 Ft.
APX500 30 In. 100 Ft. 30 In. 100 Ft.
APX800 30 In. 200 Ft. 30 In. 200 Ft.

Burnham Apex APX399 Specifications

General

Brand	Burnham
Model	Apex APX399
Category	Boiler
Language	English