12
4031-117 Rev I
02/04
NOVUS DIRECT VENT INSTALLATION INSTRUCTIONS
Figure 20 - Three Elbows
2. Top Vent
a. Clearances
See Figure 21 for clearance information.
b. Vent Lengths
Various venting configurations are shown in Figures 22-24 from which maximum vent lengths can be determined.
Figure 19 - Two Elbows
d. Two Elbows
Elbows used on rear-vented configurations
should be either a 90 degree or a 45 degree
elbow.
Starter elbows CANNOT be used in any
rear-vented configuration.
Figure 19 shows
various venting configurations using two elbows
to terminate horizontally.
e. Three Elbows
Elbows used on rear-vented configurations
should be either a 90 degree or a 45 degree
elbow.
Starter elbows CANNOT be used in any
rear-vented configuration
. Figure 20 shows
various venting configurations using three elbows
to terminate horizontally.
Figure 21 - Clearances
Note:
Exterior wall thickness must be a mini-
mum of 4 in. to a maximum of 23½ in.
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