Flue Installation for the 705 Model
Air Intake Assembly
The air intake system consists of a field supplied 4 inch diameter stainless steel, Schedule 40 PVC, ABS or CPVC pipe. A maximum 6 feet of
The air intake has a zero clearance to combustibles.
Air Intake Connection
1.Drill 2 small holes at the end of the air intake pipe. 2.Slide the pipe over the air intake terminal.
3.Using a level, ensure the pipe is straight up and down.
4.With self tapping screws, attach the pipe to the air intake terminal.
5.Apply a bead of silicone around the pipe and air intake terminal, ensuring an air tight connection.
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Exhaust Pipe Assembly
Refer to the manufacturer’s installation instructions for the specific exhaust vent system.
Venting Clearances to Combustibles
| Enclosed | Unenclosed |
Vent Size |
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Horizontal & | Horizontal & | |
| Vertical | Vertical |
4" (102 mm) | 4" (102 mm) | 1" (26 mm) |
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Horizontal Terminations
The air intake must be located in relation to the exhaust as shown below. The air intake must angle 1/4 inch per foot to the termination to prevent entry of rain.
6” | 12” |
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Vent | 4” |
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8” |
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Optional |
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Intake | EXHAUST |
Intake | COMBUSTION AIR / |
INTAKE | |
The vent termination and air | 12” MIN. ABOVE |
intake must be in the same | |
pressure zone and face the | GRADE OR |
same direction. | SNOW LEVEL |
SLOPE INTAKE AND EXHAUST
TOWARD OUTSIDE TERMINATION
MINIMUM 1/4" PER FOOT
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28 | 305, 505, 705 Indoor Manual |
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