Vent Pipe Installation - Rheem RGRK-12ERAJS Series Installation Instructions Manual

VENT PIPE INSTALLATION

NON-DIRECT VENT
INSTALLATION
GUIDELINES
IMPORTANT: Failure to correctly follow
all venting guidelines may result in
erratic furnace operation, freeze-up of
combustion air or exhaust air piping or
sooting of the furnace.
All exhaust piping must be installed in
compliance with Part 7, "Venting of
Equipment," of the latest edition of the
National Fuel Gas Code NPFA54/ ANSI
Z223.1-, local codes or ordinances and
these instructions.
1. Vertical piping is preferred.
2. All horizontal piping must slope
upward a minimum of
foot of run so that condensate drains
toward the furnace.
3. All horizontal runs must be
supported at least every 4 feet. No
sags or dips are permitted.
4. IMPORTANT: Do not common vent
with any other appliance. Do not
install in the same chase or chimney
with a metal or high temperature
plastic pipe from another gas or fuel-
burning appliance unless the
required minimum clearances to
combustibles are maintained
between the pvc pipe and other
pipes.
5. All vent runs through unconditioned
spaces where below-freezing
temperatures are expected should
be insulated with 1-in. thick,
medium-density, foil-faced
fiberglass. An equivalent "arm-a-
flex" or "rub-a-tex" insulation may
also be used as long as there is no
heat tape applied to the vent pipe.
For horizontal runs where water may
collect, wrap the vent pipe with self-
regulating 3 or 5 watt heat tape. The
heat tape must be U.L. listed and
installed per the manufacturer's
instructions.
6. The minimum vent pipe length is
5 feet.
7. Extend the exhaust pipe a minimum
of 18" from the cabinet before turning
vent.
8. Vent cannot be ran underground.
FIGURE 14
TEE TERMINAL – FOR STANDARD
HORIZONTAL NON-DIRECT
INSTALLATION
VENT
12"
20
TABLE 2
UPFLOW UNITS
FOR NON-DIRECT VENT APPLICATIONS - AIR FOR COMBUSTION
PROVIDED FROM INDOORS
MAXIMUM ALLOWABLE LENGTH IN FEET OF EACH EXHAUST PIPE AND INTAKE PIPE
FURNACE
INPUT
45,000
60,000
75,000
/ inch per
1
4
90,000
105,000
120,000
NOTES:
1. *N.A. - NOT APPLICABLE.
2. MAXIMUM OF 6 ELBOWS MAY BE USED. DO NOT COUNT ELBOWS REQUIRED FOR
ALTERNATE TERMINATION. USE ONLY MEDIUM OR LONG SWEEP ELBOWS.
3. A 45 OR 22.5 DEGREE ELBOW IS CONSIDERED ONE ELBOW.
4. NO SCREENS MAY BE USED TO COVER EXHAUST.
*A = 17-1/2" CABINET WIDTH
TABLE 3
DOWNFLOW/HORIZONTAL UNITS
FOR NON-DIRECT VENT APPLICATIONS - AIR FOR COMBUSTION
PROVIDED FROM INDOORS
MAXIMUM ALLOWABLE LENGTH IN FEET OF EACH EXHAUST PIPE AND INTAKE PIPE
FURNACE
INPUT
60,000
75,000
90,000
105,000
120,000
NOTES:
1. *N.R. - NOT RECOMMENDED.
2. MAXIMUM OF 6 - 90 DEGREE ELBOWS MAY BE USED. DO NOT COUNT ELBOWS REQUIRED FOR
ALTERNATE TERMINATION. USE ONLY MEDIUM OR LONG SWEEP ELBOWS.
3. A 45 OR 22.5 DEGREE ELBOW IS CONSIDERED ONE ELBOW.
4. NO SCREENS MAY BE USED TO COVER EXHAUST.
*A = 17-1/2" CABINET WIDTH
ELEVATED SINGLE PIPE ALTERNATE TEE TERMINATION
12" MIN. ABOVE
GRADE OR
See Figure 15. The tee termination may be elevated up to 24 inches above the
SNOW LEVEL
wall penetration if required for anticipated snow levels. Use 2 long-sweep, 2-in.
PVC elbows and 2-in. PVC pipe, attaching the tee so it is 12 inches from the wall.
PIPE
TERMINATION
SIZE
Standard
2"
Alternate
Standard
2"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
B = 21) CABINET WIDTH
PIPE
TERMINATION
SIZE
Standard
2"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
Standard
3"
Alternate
B = 21" CABINET WIDTH
NUMBERS OF ELBOWS
45° OR 90°
Medium / Long Radius ONLY
1-2 3-4
60 55
55 50
30 25
25 20
120 120
120 120
45 40
45 45
90 85
60 50
45 40
45 45
70 65
40 30
NUMBERS OF ELBOWS
45° OR 90°
Medium / Long Radius ONLY
1-2 3-4
40 35
30 25
120 120
110 105
120 120
100 95
110 105
50 40
65 60
50 40
40 35
40 35
5-6
50
45
20
15
115
110
NA
NA
75
45
NA
NA
55
25
5-6
30
20
120
100
120
85
95
35
55
35
30
30