
Flue Installation for the 705 Model
Horizontal with Concentric Termination
SLOPE INTAKE AND EXHAUST
TOWARD OUTSIDE TERMINATION
MINIMUM 1/4" PER FOOT
12” MIN. ABOVE
GRADE OR
SNOW LEVEL
Vertical Terminations
The air intake requires a return bend or two 90º elbows to prevent entry of rain.
The vent termination and air intake must be in the same pressure zone.
| 3” | 
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 | 3” | 
| MAX | 
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 | MAX | |
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| 
 | 12” MIN | 
 | 12” MIN | 
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| 12” | 
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 | 12” MIN | 
| MIN | 
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| 
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 | ANTICIPATED | 3” | 
| 
 | 
 | SNOW LEVEL | |
| COMBUSTION | 
 | MAX | |
| 
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| AIR PIPE | 
 | EXHAUST PIPE | 
| 
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 | |
| 
 | 
 | 12” MIN | 
| 
 | 3” | 12” MIN | 
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 | 305, 505, 705 Indoor Manual | 29 | 
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