PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES
Adhere to these instructions to ensure safe and proper furnace performance.
The length, diameter, and number of elbows of the vent/flue pipe and combustion air pipe effects the performance of the furnace and must be carefully sized.
All piping must be installed in accordance with local codes and these instructions.
Piping must be adequately secured and supported to prohibit sagging, joint separation, and/or detachment from the furnace.
Horizontal runs ofvent/flue piping must be supported every three to five feet and must maintain a % inch per foot downward slope, back towards the furnace, to properly return condensate to the furnace's drain system.
Precautions should be taken to prevent condensate from freezing inside the ventlflue pipe and/or at the ventlflue pipe termination.
All vent/flue piping exposed to freezing temperatures below 35 F for extended periods of time must be insulated with %" thick closed cell foam.
Also all vent/flue piping exposed outdoors in excess of the terminations shown in this manual (or in unheated areas) must be insulated with %" thick closed cell foam. Inspect piping for leaks prior to installing insulation.
TERMINATION LOCATIONS
EXHAUST VENT/INLET AIR
LOCATION
1.The vent piping for this furnace is approved for zero clearance to combustible construction.
2.The condensing oil furnace, like all high efficiency products, is likely to produce a visible vapor plume due to condensation. Surfaces near the vent termination will likely be coated with condensation.
3.Care must be taken to locate the exhaust vent where the exhaust gas, vapor plume, and condensation do not cause a hazard or nuisance. For example, so not locate the exhaust vent termination under a deck where, under certain conditions, it could form a coating of ice causing a hazard or reduce the life of the deck materials.
Fitting Description | Equivalent Length |
Elbow, 90 | 5 |
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Cleanout Tee | 5 |
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Elbow, 45 | 3 |
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Vertical Vent Termination | 0 |
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Sidewall Vent Termination | 0 |
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