Direct Vent Pipe Installation - Rheem RGFG Installation Instructions Manual

DIRECT VENT PIPE INSTALLATION

WARNING
READ AND FOLLOW ALL
INSTRUCTIONS IN THIS SEC-
TION. FAILURE TO PROPERLY
VENT THIS FURNACE CAN
CAUSE CARBON MONOXIDE
POISONING OR AN EXPLOSION
OR FIRE, RESULTING IN PROP-
ERTY DAMAGE, PERSONAL
INJURY OR DEATH.
Direct vent installations require a dedi-
cated combustion air and venting sys-
tem. All air for combustion is taken
from outside and all combustion prod-
ucts are discharged to the outdoors.
Therefore, no ventilation or combus-
tion air openings are required.
INSTALLATION
GUIDELINES
All exhaust piping must be installed in
compliance with Part 7, "Venting of
Equipment," of the latest edition of the
National Fuel Gas Code NPFA 54, 90A
and 90B ANSI Z223.1-, local codes or
ordinances and these instructions.
1. IMPORTANT: Do not common
vent with any other appliance. Do
not install in the same chase or
chimney with a metal or high tem-
perature plastic pipe from another
gas or fuel-burning appliance
unless the required minimum
clearances to combustibles are
maintained between the approved
PVC pipe and other pipes.
2. Use only medium or long radius
sweep elbows.
NOTE: For all installations. Extend
the combustion air exhaust pipe a
minimum of 18" vertically above
the furnace cabinet before turning
the vent.
3. Vertical piping is preferred.
4. Install all horizontal piping as fol-
lows:
• Slope horizontal vent piping
upward a minimum of 1/4" per foot
of run so that condensate drains
toward the furnace.
• Support horizontal vent piping at
least every four feet. No sags or
dips are permitted.
18
TABLE 8
®
DIRECT VENT APPLICATIONS
MAXIMUM ALLOWABLE LENGTH IN FEET OF EACH EXHAUST PIPE AND INTAKE PIPE
UPFLOW RGFG FURNACES
FURNACE PIPE
TERMINATION
INPUT SIZE
STANDARD
60,000 2"
CONCENTRIC
ALTERNATE
75,000
2" STANDARD
STANDARD
90,000
3" CONCENTRIC
ALTERNATE
STANDARD
105,000
3" CONCENTRIC
ALTERNATE
STANDARD
CONCENTRIC
120,000
3"
ALTERNATE
ALTERNATE
NOTES:
1. N.R. - NOT RECOMMENDED.
2. MAXIMUM OF 6 ELBOWS MAY BE USED. DO NOT COUNT ELBOWS IN ALTERNATE TERMINATION KIT.
MEDIUM OR LONG SWEEP ELBOWS MAY BE USED.
3. A 45 OR 22.5 DEGREE ELBOW IS CONSIDERED ONE ELBOW.
4. CONCENTRIC TERMINATION NO. RXGY-E03 IS FOR THRU-THE-ROOF OR THRU-THE-WALL VENTING.
5. USE KITS RXGY-DO2 (2") OR RXGY-D03 (3") FOR STANDARD OR ALTERNATE THRU-THE-WALL
VENTING.
6. USE KITS RXGY-D04 FOR ALTERNATE VENTING OF 120,000 BTUH UNITS WITH LONG RUNS.
7. NO SCREENS MAY BE USED TO COVER COMBUSTION AIR AND EXHAUST.
1
* A = 17 ⁄ " CABINET WIDTH
2
B = 21" CABINET WIDTH
** ALTERNATE VENT NOT PERMITTED ON DOWNFLOW/HORIZONTAL MODELS.
8. ALL HORIZONTAL VENTING MUST BE DONE WITH DIRECT VENTING (2-PIPE). FURNACES
INSTALLED AS NON-DIRECT VENT MUST BE TERMINATED VERTICALLY.
MAX. EQUIVALENT
LENGTH OF VENT (SEE
VENT
EQUIVALENT VENT
TERMINATION KIT
SECTION ON PAGE 13)
RECOMMENDED
1 - 2
RXGY-D02A/G02A
70' (ALL)
RXGY-E03A/G02A
RXGY-D02A 70' (ALL)
RXGY-D02A/G02A 70' (ALL)
RXGY-D03A/G02A
70' (ALL)
RXGY-E03A/G02A
RXGY-D03A 70' (ALL)
RXGY-D03A/G02A
70' (ALL)
RXGY-E03A/G02A
70' (ALL)
RXGY-D03A
RXGY-D03/G02A
70' (ALL)
RXGY-E03A/G02A
RXGY-D03A 70' (ALL)
RXGY-D04A 70' (ALL)