Bradford White EF-100T-399-3X - Manual (Page 10)

10 238-50320-00A 3/13
Tighten Metal Clamp around body of vent pipe. Metal clamp fastens to wall with wood screws
High Efficiency Commercial Condensing Models:
For horizontal sections of flue pipe, the pipe must be installed with a slight upward slope of approximately ¼ inch per
foot (20 mm per meter) toward the water heater to allow condensate to drain into the condensate elbow.
Residential and Commercial Power Direct Vent / Power Vent Models:
To prevent condensate from accumulating in the exhaust blower, install the horizontal vent pipe with a downward slope
toward the vent terminal of ¼ inch per foot (20 mm per meter) of horizontal vent pipe. An optional condensate kit is
available for residential power vent models or a tee fitting with a condensate drain loop may be used on commercial
power direct vent models to prevent condensate accumulation in the blower for long vertical runs of vent pipe. Refer to
the venting section of the Installation and Operating Instructions supplied with the water heater.
Step 6: If any of the straight pipe sections need to be cut, use a hack saw and make a straight cut on the male
(ungasketed) end of the pipe. When making the cut, allow for the 2” minimum (51 mm) insertion distance inside the
female end of the pipe. Make sure the cuts are made square and use a razor knife to deburr the edges of the cut pipe to
avoid any sharp edges that may damage the gasket.
DuraVent has adjustable vent pipe sections available, which allow 4.5 inches (114 mm) of adjustment to the length.
WARNING
Cut pipe edges must be properly deburred. Damage to the gasket from not deburring the edges of the cut male
end may result in the release of dangerous flue products.