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Intrepid® Direct Vent - Rear Vent Gas Heater
Step 8. Follow Steps 7 through 10 of the Vertical Instal-
lation instructions
Step 9. Install the black trim collar around the outside
of the Cathedral ceiling support box. The two pieces
of the trim collar slide over one another to allow for
easy adjustment around the support box. Using the six
(6) screws provided, secure the four corners and the
overlapping sections of the trim collar to the underside
of ceiling. You may want to predrill the holes for the
overlapped sections for ease of installation. (Fig. 42)
Figure 42
Cathedral Ceil-
ing Support Box
ST994
General Maintenance
Conduct an inspection of the venting system annually.
Recommended areas to inspect are as follows:
1. Check areas of the venting system which are
exposed to the elements for corrosion. These will ap-
pear as rust spots or streaks, and in extreme cases,
holes. These components should be immediately
replaced.
2. Remove the vertical terminations cap and shine a
flashlight down the vent. Remove any bird nests, or
other foreign material.
3. Check for evidence of excessive condensation, such
as water droplets forming in the inner liner, and sub-
sequently dripping out at joints. Continuous conden-
sate can cause corrosion of caps, pipe and fittings.
It may be caused by having excessive lateral runs,
too many elbow and exterior portions of the system
being exposed to cold weather.
22
Figure 41
ST993
Ceiling Trim
Overlap
Screws
4. Inspect joints to verify that no pipe sections or fittings
have been disturbed or loosened. Also check me-
chanical supports such as wall straps or plumbers
tape for rigidity.
Supplemental Canadian Instructions
When installing DirectVent Pro on appliances in Can-
ada, a 2-piece decorative wall thimble is required in
order to comply with IR #41. (Fig. 18 and 20) Install
galvanized exterior wall thimble plate on exterior of
building and black decorative wall thimble plate on the
interior side of wall. Install wall thimble centered through
a square framed opening in wall. Be sure to maintain
all minimum clearances. When installing DirectVent Pro
vertically through floors, a ceiling firestop is required at
every floor/ceiling level.
Vertical Through Existing Chimney
The heater must be vented to the outdoors through an
existing masonry or prefabricated fireplace chimney
system through the roof.
The heater is approved to be vented to the outdoors
through any solid-fuel fireplace chimney that has been
constructed or installed in accordance with the na-
tional, Provincial/State and local building codes and is
constructed of noncombustible materials. For Venting
Requirements, refer to Page 10. Refer to Venting Com-
ponents on Page 14.
Converting a Class-A Metal Chimney or
Masonry Chimney to a Direct Vent System
Application
These instructions apply to the Simpson Dura-Vent
Direct Vent Conversion kits for factory-built Class-A
metal chimneys and masonry chimneys. These vent-
ing systems, in combination with the gas appliance,
have been tested and listed by a major testing agency
such as UL, AGA, Omni or Warnock Hersey. Check the
manufacturer's rating plate and instruction manual to
confirm that a Simpson Dura-Vent Direct Vent Chimney
Conversion system is approved for use on the brand
name appliance you have selected.
IMPORTANT
Read all instructions carefully before starting the
installation. Failure to follow these instructions may
create a fire or other safety hazard, and will void the
warranty. Be sure to check the appliance manufac-
turer's installation instructions for specific venting
and clearance to combustible requirements, which
may vary from one appliance to another.
Installation Precautions
The Simpson Dura-Vent Direct Vent System is an engi-
neered product that has been designed and tested for
use with an approved list of direct vent gas appliances.
20012761
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