Rheem RGRJ series Installation Instructions Manual page 21

• Insulate the entire length of vent
pipe, between the elbow where the
pipe exits the wall and the elbow
where the termination is made, with
a closed-cell insulation, such as
"Arm-a-Flex" or "Rub-a-Tex" with a
minimum of 1/2 thickness.
• All elbows installed on the exterior
of the building must be of the long
sweep nature.
• As required for the horizontal piping
ran within the structure, any pipe
ran horizontal outside the structure
must slope upward a minimum of
1/4 per foot run so that condensate
drains toward the furnace.
From the top elbow in the exhaust
pipe, extend a length of PVC pipe
outward so that it terminates exactly
12 inches from the wall. See Figure
17. Reduce the termination pipe
extension to is 1 / inch pipe for
1
2
45,000 BTUH through 75,000 BTUH
units.
The 45,000 BTUH unit only uses kit
RXGY-D02. The 60,000 BTUH and
75,000 BTUH units may use kits
RXGY-D02 or RXGY-D03 depending
on pipe lengths and number of
elbows. Use kit RXGY-D03 with
90,000 BTUH through 120,000 BTUH
units. The RXGY-D04 kit only
applies to the 120,000 BTUH unit
using an alternate termination and
excessively long runs. See Table 2.
The following are parts lists for the
RXGY-D02, RXGY-D03 and RXGY-
D04 alternate horizontal direct vent
termination kits:
RXGY-D02
1. 2-in. tee with reducer assembly
2. / -in. PVC 6-in. dia. trap
1
2
3. PVC vane
4. 2-in. PVC elbow
5. 1 1 / -in. PVC nipple with coupling
2
6. PVC strap
7. vent template
RXGY-D03
1. 3-in. tee with reducer assembly
2. 1 / -in. PVC 6-in. dia. trap
2
3. PVC vane
4. 2-in. PVC elbow
5. PVC strap
6. vent template
FIGURE 17
ALTERNATE HORIZONTAL DIRECT VENT TERMINATION
SEE DETAIL A
3 MAX.
NOTE: 3-1/2
MAX. WHEN
D04 KIT IS
USED.
60 MAX.
FIGURE 18
VERTICAL CONCENTRIC VENT KIT - RXGY - E02
2" SCH40 PVC PIPE
3" TYPE SDR 26 PVC PIPE
2" x 3" BUSHING (MODIFIED)
3" x 3" x 3" WYE
2" x 4" COUPLING (MODIFIED)
3" x 45° STREET ELBOW
2" COUPLING
(FIELD SUPPLIED)
ROOF LINE
INLET AIR FROM
FURNACE, USE
3" x 2" BUSHING
IF INLET IS 2" PIPE
(FIELD SUPPLIED)
EXHAUST VENT
2 1 / " PVC FOR MODELS WITH 120,000 BTU INPUT
2
(KIT NO. RXGY-D04)
2" PVC FOR MODELS WITH INPUTS OF 90,000 THRU 120,000
BTU. REDUCE TO 1 / " FOR MODELS WITH INPUTS OF 45,000
1
2
THRU 75,000 BTU. ELBOWS AND RISERS ARE 2" PVC.
INTAKE VENT
2 1 / " PVC FOR MODELS WITH
2
120,000 BTU INPUT.
2" PVC ELBOWS AND RISER
MODELS WITH INPUTS OF 45,000
THRU 105,000 BTU.
USE KIT NO. RXGY-D02 WHEN 2" PIPE
IS USED BETWEEN FURNACE AND
OUTSIDE WALL. USE KIT NO. RXGY-D03
WHEN 3" PIPE IS USED.
PIPE
SUPPORT
STRAP
12" FIXED
INLET AIR
12" ABOVE
AVERAGE SNOW
ACCUMULATION
INSTALL ROOF
FLASHING
INLET AIR PIPE
2"
VENT FROM
FURNACE
EXHAUST VENT FOR
MODELS WITH
INPUT OF 45,000 THRU
75,000 BTU
DETAIL A
I339
48" MAX.
USE 2" x 3" INCREASER
IF VENT IS 3" PIPE
(FIELD SUPPLIED)
I338
21