•12” minimum from the ground, 9” ceiling overhangs, see Figure 11.
FIGURE11.
•The Power Vent outlet terminal shall terminate at least 36” above any forced air inlet into the building located within 10 feet, see Figure 12.
•The Power Vent outlet terminal shall terminate at least 4 feet below, 4 feet horizontally from or 1 foot above any door, window or gravity air inlet into the building, see Figure 12.
FIGURE12.
•18” minimum from other natural draft (gravity) direct vent, power vent or power direct vent appliance inlet and/or outlet vent(s) when directly above or 135o to either side of the center line, see Figure 13.
FIGURE13.
•24” minimum from any appliance inlet and/or outlet vents when directly below or 45o to either side of center line, see Figure 13.
•18” minimum in all directions from any obstruction that may interfere, see Figure 14.
FIGURE14.
•The location selection must provide clearances for servicing and proper operation of the water heater, see Figure 15.
FIGURE15.
Vent termination must not be within 4 feet of any items such as gas meters, gas valves or other gas regulating equipment.
•The venting system must be installed in a manner which allows inspection of the installation of the venting pipes and joints as well as periodic inspection after installation as required by ANSI Standards.
Vent termination must not be within 4 feet of any items such as gas meters, gas valves or other gas regulating equipment.
Failure to have required clearances between water heater and combustible material will result in a fire hazard.
VENTING THROUGH ROOF - CLEARANCES
•0” clearances for 3” (or optional 2” and 4”) PVC, ABS, or CPVC Schedule 40 piping from combustible surfaces.
•The Power Vent outlet terminal shall terminate at least 18” above the roof surface, see Figure 16.
•The location selection must provide clearances for servicing and proper operation of the water heater, see Figure 15.
•The venting system must be installed in a manner which allows inspection of the installation of the venting pipes and joints as well as periodic inspection after the installation as required by ANSI Standards.
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