Operating instructions

01-02 9 28881 Rev G
NOVUS REAR DIRECT VENT
c. Two Elbows
Figure 8 shows various venting configurations
using two elbows to terminate horizontally. A
minimum of a one foot vertical section is required
any time 90° elbows are used when rear venting
the appliance. The maximum vertical run is 20
and the maximum horizontal run is 18.
Figure 8
Two Elbows
E. VENTING
 Horizontal Termination - see below.
 Vertical Termination - see page 13.
1. HORIZONTAL TERMINATION
a. No Elbows
The maximum horizontal run with no vertical
sections of vent is 18 from the back of the
appliance to the base of the cap. See Figure 6.
Figure 6
Rear Vented Appliances
WARNING - RISK OF FIRE!
The horizontal run of vent must have a 1/4 rise for
every one foot of run towards the termination. Never
allow the vent to run downward. This could cause
high temperatures and may present a fire hazard.
WARNING - RISK OF FIRE!
If you have chosen horizontal termination, be sure
there are no future obstructions from trees, bushes,
snow drifts, etc.
CAUTION:
Provisions shall be made to provide adequate
combustion and ventilation air.
b. 45° Elbow
For corner installations with horizontal venting, a
maximum of one 45° elbow may be used. The
maximum horizontal run following the elbow is
18 to the base of the cap. See Figure 7.
Figure 7
45° Elbow