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GENERAL VENTING REQUIREMENTS AND
DIRECT VENT (cont.)
OPTION 4: ALTERNATE HORIZONTAL DIRECT-VENT TERMINATION
FIGURE 26
TYPICAL HORIZONTAL VENTED 2 PIPE TERMINALS
NOTE:
EXHAUST
60" Max. (152cm)
U.S. MIN. 12" (31cm)
ABOVE GRADE OR
ANTICIPATED AVG.
SNOW ACCUMULATION
CANADA: TERMINATION
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
VANE
DETAIL A
COMBUSTION AIR TERMINATION
OPTION 5: VARIANT OF ALTERNATE HORIZONTAL DIRECT-VENT TERMINATION
FIGURE 27
NOTE: 1. A TRAP MUST BE INSTALLED IN THIS OPTION TO
VARIANT OF ALTERNATE
HORIZONTAL DIRECT-VENT
TERMINATION
EXHAUST
60" Max. (152cm)
U.S. MIN. 12" (31cm)
ABOVE GRADE OR
AVG. ANTICIPATED
SNOW ACCUMULATION
CANADA: TERMINATION
MUST CONFORM TO CSA
A
B149.1-10, SECT. 8.14
1) FOR EXHAUST / INTAKE PENETRATION
DIMENSIONAL RELATIONSHIP SEE
DETAIL C
INTAKE
NOTES:
1) SUPPORT HORIZONTAL PIPE EVERY FOUR FEET.
2) WHEN 3" PIPE IS USED REDUCE TO 2" BEFORE PENETRATING OUTSIDE WALL.
3) WHEN USING 3"
2" DIA. PIPE MAY BE USED INSIDE WALL.
4) INCREASE THE 12" (31cm) MIN. ABOVE GRADE (U.S.) TO KEEP TERMINAL OPENINGS
ABOVE ANTICIPATED LEVEL OF SNOW ACCUMULATION WHERE APPLICABLE.
CANADA: REFER TO B149.1, SECT. 8.14.
2" PVC
5) DETAIL"A" INSTALL WIND DEFLECTOR VANE IN 2" PVC COUPLING IN VERTICLE
COUPLING
POSITION USING PVC SOLVENT.
6) THE COMBUSTION AIR TERMINATION MUST BE IN THE SAME PRESSURE ZONE AS
THE EXHAUST TERMINATION.
7) NO SCREENS MAY BE USED TO COVER COMBUSTION AIR OR EXHAUST.
8) NO T'S CAN BE INSTALLED AT THE TERMINATION.
9) PIPING EXTERNAL TO THE STRUCTURE MUST BE INSULATED AS REQUIRED FOR
LOCAL CLIMATE.
10) WALL PENETRATION AND VENT TERMINATION MUST BE WITH 2"
OPTION A ONLY
PREVENT WATER FROM ENTERING THE FURNACE
THROUGH THE COMBUSTION AIR PIPE. ORDER
KITS RXGY-D05 FOR 2" PIPE OR RXGY-D06 FOR 3"
PIPE AND INSTALL PER INSTRUCTIONS IN KIT.
2. PIPING EXTERNAL TO THE STRUCTURE MUST BE
INSULATED FOR LOCAL CLIMATES
3. WALL PENETRATION AND VENT TERMINATIONS
MUST BE WITH 2"
PIPE. WHEN USING 3"
AND NECKING DOWN TO 2"
AS REQUIRED, A
MAXIMUM OF 18" OF 2"
PIPE IS PERMITTED IN-
SIDE (BEFORE THE PENETRATION) WHEN USING
3"
VENT.
WIND VANE FROM
FURNACE PARTS BAG
INTAKE
DETAIL APPLIES TO TERMINATION A ONLY
VENT AND NECKING DOWN TO 2"
AS REQUIRED, 18" (46cm) MAX.
VENT
CHOOSE
EITHER
NOTE: This detail
applies to the ter-
mination and NOT
the penetration
U.S. MIN. 12" (31cm)
through the wall.
ABOVE GRADE OR
ANTICIPATED AVG.
SNOW ACCUMULATION
CANADA: TERMINATION
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
GUIDELINES
NOTE:
SEE DETAIL B FOR
DIMENSIONS BETWEEN
INTAKE & EXHAUST
10
SEE DETAIL A
COUPLINGS: REQUIRED ON EXTERIOR,
OPTIONAL ON INTERIOR.
EXHAUST
4" (10cm) MIN.
12"(31cm) MAX.
INTAKE
DETAIL B
EXHAUST / INTAKE RELATIONSHIP
PIPE.
OPTION B ONLY
NOTE:
1. A TRAP IN THE COMBUSTION AIR PIPE IS
NOT REQUIRED FOR THIS OPTION.
2. PIPING EXTERNAL TO THE STRUCTURE
MUST BE INSULATED FOR LOCAL CLIMATES.
EXHAUST
60" Max. (152cm)
U.S. MIN. 12" (31cm)
ABOVE GRADE OR
ANTICIPATED AVG.
SNOW ACCUMULATION
CANADA: TERMINATION
B
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
A TRAP MUST BE IN-
STALLED IN THIS OPTION
TO PREVENT WATER FROM
ENTERING THE FURNACE
THROUGH THE COMBUS-
TION AIR PIPE. ORDER KITS
RXGY-005 FOR 2" PIPE OR
RXGY-D6 FOR 3" PIPE AND
INSTALL PER INSTRUC-
TIONS IN KIT.
3 IN (8cm) MIN.
5 IN (13cm) MAX.
NOTE: This detail ap-
plies to the termination
and NOT the penetration
through the wall.
OPTIONAL
INTAKE
ST-A1194-18-XO
FIGURES M, L, &
DETAILS B & C.
3. WALL PENETRATION AND
VENT TERMINATIONS MUST
BE WITH 2"
IPIE. A MAXI-
MUM OF 18" OF 2
PIPE IS
PERMITTED INSIDE (BE-
FORE THE PENETRATION)
WHEN USING 3"
VENT.
INTAKE
ST-A1194-18-XO
FIGURES N & P &
DETAIL C
61
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