DuraVent Type B Gas Vent - Manual (Page 22)

22
4-INCH OVAL GAS VENT FOR
INSTALLATION IN 2” x 4” STUD
WALLS
MH6375 CATEGORY I APPLIANCES ONLY
Gas vent shall extend at least 2 feet above the
highest point where it passes through the roof,
and at least 2 feet higher than any portion of
the building within 8 feet. Install oval flashing,
storm collar, and oval vent cap.
Where pipe passes through the roof, maintain
1-inch minimum clearance to all combustibles.
attach base plate to wall furnace. Firestop
spacers shall be installed as shown, on all
floors other than the first floor. use ceiling plate
spacers at this level.
1. Saw out portion of header between studs
and install one firestop spacer.
2. nail the second firestop spacer in position,
after oval pipe is in place.
3. all floors above to be installed in the same
manner.
4. Maximum BTu input:
Single story - 85,000 BTu
Multistory - 65,000 BTu
To assemble, align the two pieces, and
push them together until they click.
OVaL pIpE
FIRESTOp SpacER
Use only vents labeled “For Exterior Use
Only”, above roofline. (Canada Only)
OVaL pIpE
FIRESTOp
SpacER
cEILInG pLaTE
SpacER
BaSE pLaTE
WaLL
FuRnacE
1 IncH MInIMuM
cLEaRancE TO
cOMBuSTIBLES