Osburn Stoves by SB I HYBRID 35 User Manual

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VERTICALLY WITH NEW CHIMNEY SYSTEM  
(Refer to Figure 18 & 19 for basement installation) 
 
NOTE: Follow L-Vent chimney manufacturer’s instructions. 
 
OPTION:   To achieve a centered vertical installation, a 45º elbow and a 
clean-out tee can be used to offset the pipe from the exhaust outlet to the 
rear center of the stove. 
 
OPTION: Install L-Vent elbow in place of clean-out tee. Locate stove. Drop 
plumb bob to center of tee outlet, mark point on ceiling. Install ceiling 
support and L-Vent pipe per L-Vent manufacturer’s instructions. 
 
1.  Always maintain 3” clearance from combustible materials. When 
passing through additional floors or ceilings, always install firestop 
spacer. 
 
2. 
After lining up for hole in roof, cut either a round or square hole in roof, 
always 3” larger all the way around pipe. Install upper edge and sides 
of flashing under roofing materials, nail to the roof along upper edge. 
Do not nail lower edge. Seal nail heads with flexible waterproof 
sealant. 
 
3.  Apply flexible, waterproof sealant where the storm collar meets the 
vent.  Slide storm collar down until it sits on the flashing. Seal and 
install cap. Mobile home installations must use a spark arrester. 
 
VERTICALLY INTO EXISTING CHIMNEY SYSTEM 
 
As an alternative, 3” or 4” L-Vent can be run inside existing chimney to 
termination(Figure 19). This is the preferred method. 
 
Follow guidelines for equivalent vent length. 
 
FOLLOW CHIMNEY OR 
VENT MANUFACTURER'S 
INSTRUCTIONS
CLEAN OUT
TEE
ATTIC
INSULATION
SHIELD
VERTICAL ROOF VENT
12" MINIMUM
CLEARANCE 
TO ROOF
STORM
COLLAR
 
Figure 17 
Venting through roof 
CLEAN OUT
TEE
CLEAN OUT
TEE
FOR BASEMENT INSTALLATION
A 4" PIPE IS RECOMMANDED
FOLLOW CHIMNEY OR 
VENT MANUFACTURER'S 
INSTRUCTIONS
WALL
STRAP
WALL THIMBLE
 
Figure 18 
Basement installation 
 
Figure 19 
Venting through existing chimney 
 
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