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.
Summary of Contents for Apex APX399
Page 65: ...65 VIII Electrical continued Figure 43 Ladder Diagram ...
Page 66: ...66 VIII Electrical continued ...
Page 67: ...67 Figure 44 Wiring Connections Diagram VIII Electrical continued ...
Page 110: ...110 1P 3 1P 2 1P 1 XIII Repair Parts continued 1C 1D 1E ...
Page 116: ...116 XIII Repair Parts continued ...
Page 118: ...118 XIII Repair Parts continued ...
Page 129: ...129 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 130: ...130 SERVICE RECORD DATE SERVICE PERFORMED ...