7A. Venting and Combustion Air Requirements for
Specific Requirements (read all before installing)
Comply with the specific requirements and instructions in the following paragraphs and illustrations.
1.Combustion Air Inlet
Diameter is 5" for Sizes 150 and 200 and 6" for Sizes 250, 300, 350, and 400.
Use tin snips or aviation shears to cut out the hole in the top of the heater (See Figure 2). Insert the pipe through the hole and attach it to the collar inside the heater. Seal the joint. (Larger size heaters have oval collars. If the collar is oval, form the pipe to fit the collar.)
2.Venter Outlet
The venter outlet size is 5" for Sizes 150, 200, and 250 and 6" for Sizes 300, 350, and 400. A minimum length of 12" of straight pipe is required at the venter outlet.
3.Concentric Adapter
If installed as a
•Option CC2 and CC6 - The concentric adapter is a metal box that attaches to the inside of the building. See the illustrations and dimenstions in Figures 3A and 3B. Option CC6 is horizontal; Option CC2 is vertical. (Op- tion kits also include a vent terminal and combustion air inlet or guard.)
Figure 2 - Attach Combustion Air Pipe | Venter |
Use tin snips | Outlet |
| |
to cut out |
|
hole for |
|
combustion |
|
air pipe |
|
Collar for |
|
connecting |
|
combustion air |
|
pipe |
|
1)Remove door panel.
2)Cut out the hole.
3)Slide pipe down through hole.
4)If collar is oval, form pipe to fit. Attach pipe to collar with sheetmetal screws and seal the connection.
Figure 3A - Concentric Adapter Assembly in Options CC2 and CC6
View of Heater Connection Side
Collar for |
|
connecting |
|
indoor portion |
|
of the |
|
combustion |
|
air pipe | Install rubber seal |
| |
| for vent pipe |
View of Vent Terminal Connection Side
Collar for outside portion of the combustion air pipe (vent pipe extends through the box internally concentric to the outside portion of the combustion air pipe)
2” (51mm)
6” (152mm)
2” (51mm)
End View
H
Figure 3B - Concentric Adapter Box
Dimensions - inches (mm)
CAUA | 150,200 | 250,300,350,400 |
A | 5 (127) | 6 (152) |
B | 4 (102) | 5 (127) |
C | 4 (102) | 4 (102) |
D | ||
E | 5 (127) | 5 (127) |
F | 4 (102) | 5 (127) |
G | ||
H | 8 (203) | 10 (254) |
J | 6 (152) | 8 (203) |
J = Diameter of the Collar for attaching the "Outside" Portion of the Combustion Air Pipe
Top View of the Concentric Adapter
Box Showing Air Flow
= Combustion Air Flow
= Exhaust (Vent) Gas Flow
A = Diameter of the Collar for attaching the inside Combustion Air Pipe from the Heater
F
E
B
D G
C
Side View - Side of the
Adapter Box that Connects
to the Heater
Mfg No. 164771, Page 5