Install Instructions

Page 15 of 18
TYPICAL ECCENTRIC INCREASER / SINGLE WALL TO DOUBLE WALL APPLICATION
¾ Eccentric Increaser (see illustration #3)
shall be used when increasing the
appliance vent diameter or system
diameter from one size to a larger size
in a “horizontal application”. (Refer to
appliance installation & operating
manual and /or engineered approved
design)
¾ The Z-Vent Eccentric Increaser
provides a level wall allowing the
condensate to flow unimpeded back to
drain.(see Vent Pipe Slope pg. 7)
¾ A Z-Vent Single Wall to Double Wall
fitting is necessary when transitioning
from a single wall vent system to a
double wall vent system.
TYPICAL CONCENTRIC INCREASER APPLICATION
¾ Concentric Increasers shall be used when increasing the
vent diameter or system diameter from one size to a
larger size in a “vertical application”. (Refer to
appliance installation & operating manual and /or
engineered approved design)
¾ The Z-Vent Concentric Increaser provides a conical
wall allowing the condensate to flow vertically unimpeded
back to drain.(see Vent Pipe Slope pg. 7)