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6
FIGURE 5
FIGURE 6
FIGURE 7 FIGURE 8
FLUE EXTENSIONS
There are three optional extension kits available. Any
combination of the three kits can be chosen; however, only one
kit can be used vertically and/or horizontally. (See Figures 10
and 11.)
VENTING CLEARANCES
• 18” minimum in all directions from any obstruction that may
interfere.
• 18” minimum from the ground and 12” from ceiling
overhangs. Figure 4.
• The direct vent terminal shall terminate at least 3 feet above
any forced air inlet located within 10 feet. Figure 5.
• 9” minimum horizontally from or above any door, window or
gravity air inlet into the building (50,000 BtuH input or less.)
• 12” minimum horizontally from or above any door, window or
gravity air inlet into the building (over 50,000 BtuH input).
• 12” minimum below any door, window or gravity air inlet into
the building (50,000 BtuH input or less).
• 18” minimum below any door, window or gravity air inlet into
the building (over 50,000 BtuH input).
• 18” minimum from other gravity or natural appliance outlet
vents when directly above or 135° to either side of center line.
Figure 6.
• 36” minimum from any outlet vents when directly below or
45° to either side of center line. Figure 7.
• 36” minimum in all directions from any other forced air
appliance outlet vent. Figure 7.
• The location selection must provide clearances for servicing
and proper operation of the water heater. Figure 8.
• Vent termination must not be within 4 feet of any items such as
gas meters, gas valves or other gas regulating equipment.
FIGURE 4
WARNING
Vent termination must not be within 4 feet of any items such as
gas meters, gas valves or other gas regulating equipment.
OPTIONAL WIRE GRILL
When the water heater vent cap is low enough to be touched
accidentally, or is accessible to small children, installation of a
protective vent cover is recommended. Some local codes may
require a vent cap cover. Figure 9 shows the optional wire vent cap
protector available from the water heater manufacturer.
A wire mesh chain link fence (as shown in Figure 9) may be used
instead of the factory cover. Care should be taken to maintain
adequate ventilation around the vent cap. If a chain link fence is
installed, it must not be used as a storage area for items that may
block proper ventilation.