Amana ACV9, AMV9 installation instructions Vent Termination Clearances

3' min.

<10'

Vent terminations (non-direct and direct vent) must terminate at least 3 feet above any forced air inlet located within 10 feet.

NOTE: This provision does not apply to the combustion air intake termination of a direct vent application.

The vent termination of a non-direct vent application must terminate at least 4 feet below, 4 feet horizontally from, or 1 foot above any door, window, or gravity air inlet into any building.

The vent termination of a direct vent application must terminate at least 12 inches from any opening through which flue gases may enter a building (door, window, or gravity air inlet).

The vent termination of vent pipe run vertically through a roof must terminate at least 12 inches above the roof line (or the anticipated snow level) and be at least 12 inches from any vertical wall (including any anticipated snow build up).

A vent termination shall not terminate over public walkways or over an area where condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of regulators, relief valves, or other equipment.

The combustion air intake termination of a direct vent application should not terminate in an area which is frequently dusty or dirty.

Non-Direct Vent

&

Direct Vent

Vent/Flue Terminations

Non-Direct Vent

Vent/Flue Termination

No Terminations

Above Walkway

12" min.

12"

MATERIALS AND JOINING METHODS

WARNING

located in this section for specific details on termination construc- tion.

•All terminations (flue and/or intake) must be located at least 12 inches above ground level or the anticipated snow level.

TO AVOID BODILY INJURY, FIRE OR EXPLOSION, SOLVENT CEMENTS MUST BE KEPT AWAY FROM ALL IGNITION SOURCES (I.E., SPARKS, OPEN FLAMES, AND EXCESSIVE HEAT) AS THEY ARE COMBUSTIBLE LIQUIDS. AVOID BREATHING CEMENT VAPORS OR CONTACT WITH SKIN AND/OR EYES.

Two- or three-inch nominal diameter PVC Schedule 40 pipe meet- ing ASTM D1785, PVC primer meeting ASTM F656, and PVC sol- vent cement meeting ASTM D2564 specifications must be used. Fittings must be DWV type fittings meeting ASTM D2665 and ASTM D3311. Carefully follow the manufacturer’s instructions for cutting, cleaning, and solvent cementing of PVC.

As an alternative to PVC pipe, primer, solvent cement, and fittings, ABS materials which are in compliance with the following specifi- cations may be used. Two-or-three-inch ABS Schedule 40 pipe must meet ASTM D1527 and, if used in Canada, must be CSA listed. Solvent cement for ABS to ABS joints must meet ASTM D2235 and, if used in Canada, must be CSA listed. The solvent cement for the PVC to ABS transition joint must meet ASTM D3138. Fittings must be DWV type fittings meeting ASTM D2661 and ASTM D3311 and, if used in Canada, must be CSA listed. Carefully follow the manufacturers’ instructions for cutting, cleaning, and solvent cementing PVC and/or ABS.

All 90° elbows must be medium radius (1/4 bend DWV) or long radius (Long sweep 1/4 bend DWV) types conforming to ASTM D3311. A medium radius (1/4 bend DWV) elbow measures 3 1/ 16” minimum from the plane of one opening to the centerline of the other opening for 2” diameter pipe, and 4 9/16” minimum for 3” pipe.

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 (when applicable) affects 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 sag- ging, joint separation, and/or detachment from the furnace. Hori- zontal runs of vent/flue piping must be supported every three feet and must maintain a 1/4 inch per foot downward slope, back to- wards the furnace, to properly return condensate to the furnace’s drain system. Allowances should be made for minor expansion and contraction due to temperature variations. For this reason, particular care must be taken to secure piping when a long run is followed by a short offset of less than 40 inches.

•

•

•

•

•

•

Grade or Highest

Anticipated

Snow Level

12" min.

Forced Air

Inlet

Direct Vent

Vent/Flue Termination

4' min.

4' min.

12"

min.

Non-Direct Vent

Vent/Flue Termination

Precautions should be taken to prevent condensate from freezing inside the vent/flue pipe and/or at the vent/flue pipe termination. All vent/flue piping exposed to freezing temperatures below 35°F for extended periods of time must be insulated with 1/2” 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 1/2” thick closed cell foam. Inspect piping for leaks prior to installing insulation.

TERMINATION LOCATIONS

NOTES: Refer to Section IV, Location Requirements and Considerations for combustion air contaminant restrictions.

The following bullets and diagram describe the restrictions con- cerning the appropriate location of vent/flue pipe and combustion air intake pipe (when applicable) terminations. Refer to Non-Di- rect Vent (Single Pipe) Piping and Direct Vent (Dual Pipe) Piping

Vent Termination Clearances

NOTE: In Canada, the Canadian Fuel Gas Code takes precedence over the preceding termination restrictions.

CANADIAN VENTING REQUIREMENTS

In Canada, venting must conform to the requirements of the cur- rent CAN/CSA-B149 Installation Code. Use only CSA listed two or three inch diameter PVC or ABS pipe, solvent cement, and fittings throughout. Carefully follow the manufacturers’ instructions for cutting, cleaning, and solvent cementing PVC and/or ABS.

The vent can be run through an existing unused chimney provided the space between the vent pipe and the chimney is insulated and closed with a weather-tight, corrosion-resistant flashing.

13