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02/04
4031-117 Rev I
19
NOVUS DIRECT VENT INSTALLATION INSTRUCTIONS
WARNING! - RISK OF FIRE
Be sure there wont be any future obstructions
from trees, bushes, snow drifts, etc.
Figure 39 - Installing the Firestop Spacer
4. Firestop Spacer/Vent Installation
Frame an opening and install a firestop spacer
(DVP-FS) whenever the vent penetrates a ceiling/floor
area, as shown in Figure 39. Frame the opening with
the same sized lumber as used in the ceiling/floor
joists.
When installing a top vent, vertical appliance,
the hole should be directly above the appliance,
unless the flue is offset. DO NOT
pack insulation
around the vent.
Figure 38
Rear Vent Heat Shield
2. Install the Rear Vent Heat Shield
For rear vented appliances a heat shield MUST be
placed one inch above the top of the vent between the
wall shield and the termination cap. There are two
sections of the heat shield. One section attaches to
the wall shield with two screws. The remaining section
is attached to the cap in the same manner. The
sections of the heat shield will overlap to match the
wall thickness (depth).
If the wall thickness does not allow the required
1-1/2 in. heat shield overlap (for rear vented
appliances), a DVP-HSM Extended Heat Shield must
be used. You must cut the DVP-HSM to the thickness
of the wall and attached to the wall shield.
The small leg on the shield should rest on the top of
the vent to properly space it from the pipe section.
See Figure 38. This heat shield is not necessary on
top vented appliances.
WARNING! - RISK OF FIRE
Always maintain minimum air space clearances
or greater around the appliance and vent system.
3. Termination
Vent termination must not be recessed in the wall.
Siding may be brought to the edge of the cap base.
Install the cap as shown in Figure 37. Cap pipe
sections should overlap the vent pipe by 1-1/2 in. Caulk
the outside edges of the cap.
Local codes may require the installation of a cap
shield (DRC-RADIUS or COOL-ADD) which prevents
anything or anyone from touching the hot cap.
Figures 25-27 illustrate cap locations prescribed by
current
Z223.1
and
CAN/CGA-B149
installation codes.