Enviro EG40-070 - Manual (Page 19)

Figure 23: Vent restrictor ring.
Figure 22. Possible Vent Configurations; Vertical
and Horizontal Terminations.
V
ENT
C
ONFIGURATIONS
:
Figures 22 shows the range of venting options, it shows
possible vent configurations if the unit is top vented,
for vertical and horizontal terminations, any layout that
remains within the shaded area is acceptable. Having
the fewest number of elbows is ideal, as they tend to
disrupt air movement. Using 45˚ elbows is preferable
to using 90˚ elbows. Also, a shorter vent system will
perform better than a longer one.
NOTE: The total length of the vent pipes can not
exceed 33 ft (10.1 m). Any combination of rise and run
can be used as long as it lays within the shaded area
(a total of three (3) 90° elbows or six (6) 45° elbows
can be used). In addition to what is shown, if a 90°
elbow is used in the horizontal plane, 3 ft (91.4 cm)
must be subtracted from the allowable horizontal run
(for each 45° elbow, 11⁄2 ft must be subtracted from
the allowable horizontal run).
V
ENT
R
ESTRICTOR
R
ING
:
A vent restrictor ring is supplied with each direct vent fireplace.
This restrictor ring is to be installed when the vertical chimney
installation is over 6 ft (1.83 m). Before the chimney is placed
onto the stove, place this vent restrictor ring into the 4 inch
(10.2 cm) flue pipe (as shown), once the vent restrictor ring
has been installed, the vertical sections of chimney can be
installed.
19
Initial Installation
QUALIFIED INSTALLERS ONLY