Option 2: Standard Horizontal Direct Vent; Termination; Option 3: Variant Of Standard Horizontal Direct Vent Termination - Rheem R95P Installation Instructions Manual

GENERAL VENTING REQUIREMENTS AND
GUIDELINES
DIRECT VENT (cont.)
OPTION 2: STANDARD HORIZONTAL DIRECT-VENT TERMINATION
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.
OPTION 3: VARIANT OF STANDARD HORIZONTAL DIRECT-VENT TERMINATION
FIGURE 25
VARIANT OF STANDARD HORIZONTAL DIRECT-VENT TERMINATION
U.S. MIN. 12" (31cm)
U.S. MIN. 12" (31cm)
ABOVE GRADE OR
ABOVE GRADE OR
ANTICIPATED AVG. ANTICIPATED AVG.
A
SNOW ACCUMULATION SNOW ACCUMULATION
CANADA: TERMINATION CANADA: TERMINATION
MUST CONFORM TO CSA
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
B149.1-10, SECT. 8.14
60
OPTION A ONLY
NOTE:
NOTE:
1) A TRAP IN THE COMBUSTION AIR PIPE
1) A TRAP IN THE COMBUSTION AIR PIPE
IS NOT REQUIRED FOR THIS OPTION.
IS NOT REQUIRED FOR THIS OPTION.
2) PIPING EXTERNAL TO THE STRUCTURE
2) PIPING EXTERNAL TO THE STRUCTURE
MUST BE INSULATED AS REQUIRED
MUST BE INSULATED AS REQUIRED FOR
FOR LOCAL CLIMATE LOCAL CLIMATE.
EXHAUST COUPLIING EXHAUST: COUPLING
REQUIRED REQUIRED
INTAKE
INTAKE
DETAIL APPLIES TO BOTH TERMINATIONS
SEE DETAIL A
COUPLINGS: REQUIRED
ON EXTERIOR, OPTIONAL
ON INTERIOR
OR
CHOOSE
EITHER
SHOWN
U.S. MIN. 12" (31cm)
ABOVE GRADE OR
ANTICIPATED AVG.
SNOW ACCUMULATION
CANADA: TERMINATION
MUST CONFORM TO CSA
B149.1-10, SECT. 8.14
SEE DETAIL B
FOR DIMENSION
BETWEEN INTAKE
AND EXHAUST
B
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-
EXHAUST COUPLIING
D06 FOR 3" PIPE AND INSTALL
REQUIRED
PER INSTRUCTIONS IN KIT.
2. PIPING EXTERNAL TO
WIND VANE FROM
FURNACE PARTS BAG
INTAKE
B
ST-A1194-18-XO
FIGURES O, Q &
DETAIL C
ST-A1194-18-XO
FIGURE K &
DETAILS B & C
THE STRUCTURE MUST
BE INSULATED FOR
LOCAL CLIMATES.