Direct Vent; Installation Guidelines - Rheem RGRJ series Installation Instructions Manual

DIRECT VENT

INSTALLATIONS
WARNING
!
READ AND FOLLOW ALL
INSTRUCTIONS IN THIS SECTION.
FAILURE TO PROPERLY VENT
THIS FURNACE CAN CAUSE
CARBON MONOXIDE POISONING
OR AN EXPLOSION OR FIRE,
RESULTING IN PROPERTY
DAMAGE, PERSONAL INJURY
OR DEATH.
Direct vent installations require a
dedicated combustion air and venting
system. All air for combustion is taken
from the outside atmosphere and all
combustion products are discharged
to the outdoors. Therefore, no
ventilation or combustion air
openings are required.
IMPORTANT: The plastic combustion
air and venting components are of
Schedule 40 PVC. If using ABS
piping ensure that the solvent cement
is compatible for joining PVC to ABS
components or use a mechanical
connection that can withstand the
vent temperatures and are corrosion
resistant.

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 NPFA54/
ANSI Z223.1-, CAN/CGA-B149, local
codes or ordinances and these
instructions.
1. Vertical piping is preferred.
2. All horizontal piping must slope
upward a minimum of 1 /
per 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 COM-
MON VENT WITH ANY OTHER
APPLIANCE. DO NOT INSTALL
IN THE SAME CHASE OR
CHIMNEY WITH A METAL OR
HIGH TEMPERATURE PLAS-
TIC PIPE FROM ANOTHER
GAS OR FUEL-BURNING
APPLIANCE UNLESS THE
REQUIRED MINIMUM
CLEARANCES TO
COMBUSTIBLES ARE
MAINTAINED BETWEEN THE
PVC PIPE AND OTHER PIPES.
TABLE 2
FOR DIRECT VENT APPLICATIONS - AIR FOR COMBUSTION
PROVIDED FROM OUTDOORS
MAXIMUM ALLOWABLE LENGTH IN FEET OF EACH EXHAUST PIPE AND INTAKE AIR PIPE
FURNACE
INPUT
45,000
60,000
75,000
90,000
105,000
120,000
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 DEGREE ELBOW IS CONSIDERED ONE ELBOW.
inch
4. CONCENTRIC TERMINATION NO. RXGY-C01 IS FOR THRU-THE-WALL VENTING.
4
5. CONCENTRIC TERMINATION NO. RXGY-E02 IS FOR THRU-THE-ROOF VENTING.
6. USE KITS RXGY-DO2 (2") OR RXGY-D03 (3") FOR STANDARD OR ALTERNATE THRU-THE-WALL VENTING.
7. USE KITS RXGY-D04 FOR ALTERNATE VENTING OF 120,000 BTUH UNITS WITH LONG RUNS.
5. All vent runs through uncon-
ditioned 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
VENT TERMINATION
PIPE
KIT RECOMMENDED
TERMINATION
SIZE
(RXGY-D0* Kits for
Horizontal Venting Only)
Standard RXGY-D02
2" Concentric RXGY-C01/RXGY-E02
Alternate RXGY-D02
Standard RXGY-D02
2" Concentric RXGY-C01/RXGY-E02
Alternate RXGY-D02
Standard RXGY-D03
3" Concentric RXGY-C01/RXGY-E02
Alternate RXGY-D03
Standard RXGY-D02
2" Concentric Not Recommended
Alternate Not Recommended
Standard RXGY-D03
3" Concentric RXGY-C01/RXGY-E02
Alternate RXGY-D03
Standard RXGY-D03
3" Concentric RXGY-C01/RXGY-E02
Alternate RXGY-D03
Standard RXGY-D03
3" Concentric RXGY-C01/RXGY-E02
Alternate RXGY-D03
Standard RXGY-D03
Concentric RXGY-C01/RXGY-E02
3"
Alternate RXGY-D03
Alternate RXGY-D04
NUMBER OF ELBOWS
45° or 90°
Medium / Long Radius ONLY
1 - 2 3 - 4
65 60
55 50
40 35
30 25
120 120
110 105
20 15
NR NR
120 120
100 95
110 105
50 40
110 105
50 40
105 100
45 35
105 95
U.L. listed and installed per the
manufacturer's instructions.
6. The minimum vent pipe length is
5 feet.
Size the exhaust and combustion air
intake pipes as specified in Table 2.
This table lists the maximum allow-
able length in feet of the exhaust and
combustion air intake pipes that may
be used for all furnace inputs as
related to the number of elbows
required and the termination (see
shaded area).
5 - 6
55
45
30
20
120
100
10
NR
120
85
95
35
95
35
90
30
90
19