Rheem R95P - Option 2: Standard Horizontal Direct Vent; Termination; Option 3: Variant of Standard Horizontal Direct Vent Termination

Venting
OPTION 2: STANDARD HORIZONTAL DIRECT-VENT TERMINATION
OPTION 3
: VARIANT OF STANDARD HORIZONTAL DIRECT-VENT TERMINATION
DIRECT VENT (cont.)
GENERAL VENTING REQUIREMENTS AND
GUIDELINES
FIGURE 25
VARIANT OF STANDARD HORIZONTAL DIRECT-VENT TERMINATION
EXHAUST: COUPLING
REQUIRED
INTAKE
12” (31cm) From Walll
NOTE:
1) A TRAP IN THE COMBUSTION AIR PIPE
IS NOT REQUIRED FOR THIS OPTION.
2) PIPING EXTERNAL TO THE STRUCTURE
MUST BE INSULATED AS REQUIRED FOR
LOCAL CLIMATE.
U.S. MIN. 12” (31cm)
ABOVE GRADE OR
ANTICIPATED AVG.
SNOW ACCUMULATION
CANADA: TERMINATION
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
5” Max. (46cm)
3” Min. (8cm)
ST-A1194-18-XO
FIGURES O, Q &
DETAIL C
OPTION B ONLY
NOTE:
1. A TRAP MUST BE INSTALLED IN
THIS OPTION TO PREVENT
WATER FROM ENTERING THE
FURNACE THROUGH THE COM-
BUSTION 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.
OPTION A 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 AS REQUIRED
FOR LOCAL CLIMATE
EXHAUST COUPLIING
REQUIRED
EXHAUST COUPLIING
REQUIRED
WIND VANE FROM
FURNACE PARTS BAG
INTAKE
INTAKE
U.S. MIN. 12” (31cm)
ABOVE GRADE OR
ANTICIPATED AVG.
SNOW ACCUMULATION
CANADA: TERMINATION
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
U.S. MIN. 12” (31cm)
ABOVE GRADE OR
ANTICIPATED AVG.
SNOW ACCUMULATION
CANADA: TERMINATION
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
12” (31cm) From Wall
12” (31cm) From Wall
6” (15.5cm) Min. From Wall
18” Max. (46cm)
3” Min. (8cm)
5” Max. (46cm)
3” Min. (8cm)
A
B
CHOOSE
EITHER
OR
60
DETAIL APPLIES TO BOTH TERMINATIONS
SHOWN
FIGURE 24
STANDARD HORIZONTAL DIRECT VENTING
SUPPORT HORIZONTAL PIPE EVERY FOUR FEET.
WHEN 3” PIPE IS USED REDUCE TO 2” BEFORE PENETRATING OUTSIDE WALL.
18” (46cm) MAX. 2” DIA. PIPE MAY BE USED INSIDE THE WALL.
INCREASE THE 12” (31cm) MIN. (U.S.) ABOVE GRADE TO KEEP
TERMINAL OPENINGS ABOVE ANTICIPATED LEVEL OF SNOW ACCUMULATION
WHERE APPLICABLE. CANADA: TERMINATIONS MUST CONFORM TO CSA B149.10, SECT. 8.14.
DETAIL “B” INSTALL WIND DEFLECTOR VANE IN 2” PVC COUPLING IN VERTICLE
POSITION USING PVC SOLVENT.
THE COMBUSTION AIR TERMINATION MUST BE IN THE SAME PRESSURE ZONE AS
THE EXHAUST TERMINATION.
NO SCREENS MAY BE USED TO COVER COMBUSTION AIR OR EXHAUST.
NO T’S CAN BE INSTALLED AT THE TERMINATION.
SEE DETAIL A
COUPLINGS: REQUIRED
ON EXTERIOR, OPTIONAL
ON INTERIOR
SEE DETAIL B
FOR DIMENSION
BETWEEN INTAKE
AND EXHAUST
B
ST-A1194-18-XO
FIGURE K &
DETAILS B & C