USSC 98 USSC
Installation
VENT TERMINATION CLEARANCES:
A) Minimum 4-foot (1.22m) clearance below or beside any door or window that opens.
B) Minimum 1-foot (0.3m) clearance above any door or window that opens.
C) Minimum 3-foot (0.91m) clearance from any adjacent building.
D) Minimum 7-foot (2.13m) clearance from any grade when adjacent to public walkways.
E) Minimum 2-foot (0.61m) clearance above any grass, plants, or other combustible materials.
F) Minimum 3-foot (0.91m) clearance from an forced air intake of any appliance.
G) Minimum 2-foot (0.61m) clearance below eves or overhang.
H) Minimum 1-foot (0.3m) clearance horizontally from combustible wall.
I) Must be a minimum of 3 foot (0.91m) above the roof and 2 foot (0.61m) above the highest point or the roof within
10 feet (3.05m).
VENT TERMINATION CLEARANCES
Installation
VENTING REQUIREMENTS
Ì
Ì Do not connect the pellet vent to a vent serving any other appliance or furnace.
Ì
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ARE NOT DRAWN INTO AND CIRCULATED BY THE AIR CIRCULATION SYSTEM.
The following installation guidelines must be followed to ensure conformity with both the safety listing of this furnace
and to local building codes.
IMPORTANT! This unit is equipped with a negative draft system that pulls through the burn pot and pushes
manual, it will not function properly.
MAXIMUM VENTING DISTANCE
Installation MUST include at least 3-feet of vertical pipe. This will create a natural draft to reduce the possibility of smoke
or odor escaping during appliance shutdown and keep exhaust from causing a nuisance or hazard by exposing people
Total length of horizontal vent MUST NOT exceed 4-feet (this does not include the clean-out tee). Use no more than 180
degrees of elbows (two 90-degree elbows, or two 45-degree and one 90-degree elbow, etc.) to maintain adequate draft.
PELLET VENT TYPE
connector provided on the back of the furnace (use a 3-inch to 4-inch adapter for 4-inch pipe). Use 4-inch vent if the
vent height is over 12-feet or if the installation is over 2,500 feet above sea level.
We recommend the use of Simpson Dura-Vent
®
or Metal-Fab
®
pipe (if you use other pipe, consult your local building
codes and/or building inspectors). Do not use Type-B Gas Vent pipe or galvanized pipe with this unit. The pellet vent
pipe is designed to be disassembled for cleaning and should be checked several times during the burning season. Pellet
vent pipe is not furnished with the unit and must be purchased separately.
PELLET VENT INSTALLATION
Each elbow or tee reduces draft potential by 30% to 50%.
All joints in the vent system must be fastened by at least 3 screws, and all joints must be sealed with HI-TEMP RTV
silicone sealant to be airtight. The area where the vent pipe penetrates to the exterior of the home must be sealed with
silicone or other means to maintain the vapor barrier between the exterior and the interior of the home.
Vent surfaces can get hot enough to cause burns if touched by children. Noncombustible shielding or guards may be
required.
PELLET VENT TERMINATION
Do not terminate the vent in an enclosed or semi-enclosed area, such as; carport, garage, attic, crawl space, under a
sun deck or porch, narrow walkway, or any other location that can build up a concentration of fumes.
The termination must exist above the outside air inlet elevation.
The termination must not be located where it could become plugged by snow or other materials.
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