Rheem RGRK-12ERAJS Series Installation Instructions Manual page 25

• 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 exhaust pipe
1
extension to is 1 ⁄ inch pipe for
2
45,000 BTUH through 75,000 BTUH
units.
The 45,000 BTUH unit only uses kit
(-)XGY-D02/D02A. The 60,000 BTUH
and 75,000 BTUH downflow only
units may use kits (-)XGY-D02/D02A
or (-)XGY-D03/D03A depending on
pipe lengths and number of elbows.
Use kit (-)XGY-D03/D03A with 90,000
BTUH downflow through 120,000
BTUH units or upflow 90,000 or
120,000. The (-)XGY-D04/D04A kit
only applies to the 120,000 BTUH
unit using an alternate termination
and excessively long runs. See
Table 4.
The following are parts lists for the
(-)XGY-D02/D02A, (-)XGY-D03/D03A
and (-)XGY-D04/D04A alternate
horizontal direct vent termination kits:
(-)XGY-D02/D02A
1. 2-in. tee with reducer assembly
1
2. ⁄ -in. PVC 6-in. dia. trap
2
3. PVC vane
4. 2-in. PVC elbow
1
5. 1 ⁄ -in. PVC nipple with coupling
2
6. PVC strap
7. vent template
FIGURE 17
ALTERNATE HORIZONTAL DIRECT VENT TERMINATION
SEE DETAIL A
12" FROM
WALL
3" MAX.
NOTE: 3-1/2"
MAX. WHEN
D04 KIT IS
USED.
24" MAX.
3"
EXHAUST
4"
INTAKE
OPTIONAL
INTAKE
DETAIL B
EXHAUST / INTAKE RELATIONSHIP
(-)XGY-D03/D03A
1. 3-in. tee with reducer assembly
1
2. ⁄ -in. PVC 6-in. dia. trap
2
3. PVC vane
4. 2-in. PVC elbow
5. PVC strap
6. vent template
(-)XGY-D04/D04A
1
1. 2 ⁄ -in. PVC elbow
2
1
2. 3" x 2 ⁄ " PVC bushing
2
1 1
3. 2 ⁄ " x 6 ⁄ " long PVC pipe
2 2
1
4. 2 ⁄ " x 16" long PVC pipe
2
1
5. 2 ⁄ " x 21" long PVC pipe
2
6. PVC vane
7. 3-in. tee with reducer assembly
1
8. 6-in. dia. ⁄ -in. PVC trap
2
9. PVC strap
10. vent template
NOTE: The (-)XGY-D04/D04A kit only
applies to the 120,000 BTUH unit
using an alternate termination and
excessively long runs.
EXHAUST VENT
2 / " PVC FOR MODELS WITH 120,000 BTU INPUT
1 2
(KIT NO. (-)XGY-D04)
2" PVC FOR MODELS WITH INPUTS OF 90,000 AND
120,000 BTU. REDUCE TO 1 / " FOR MODELS WITH
1
2
INPUTS OF 45,000 THRU 75,000 BTU (SEE DETAIL A).
ELBOWS AND RISERS ARE 2" PVC.
INTAKE VENT
2 / " PVC FOR MODELS WITH
1 2
120,000 BTU INPUT.
2" PVC ELBOWS AND RISER
MODELS WITH INPUTS OF 45,000
THRU 105,000 BTU.
USE KIT NO. (-)XGY-D02/D02A WHEN 2"
PIPE IS USED BETWEEN FURNACE AND
OUTSIDE WALL. USE KIT NO. (-)XGY-
D03/D03A WHEN 3" PIPE IS USED.
4" FROM
WALL
PIPE
SUPPORT
STRAP
12"
FROM
WALL
1-1/2"
PIPE
VANE
DETAIL C
COMBUSTION AIR
TERMINATION
(-)XGY-D02A
1. 2" Tee assembly w/
connection
1
2. ⁄ " PVC-5" diameter trap
2
3. Wind deflector vane
4. Vent template
(-)XGY-D03A
1. 3" Tee assembly w/
connection
1
2. ⁄ " PVC-5" diameter trap
2
3. Wind deflector vane
4. Vent Template
(-)XGY-D04A
1. 3" Tee assembly w/
connection
1
2. ⁄ " PVC-6" diameter trap
2
3. Wind deflector vane
4. Vent template
DETAIL A
EXHAUST VENT FOR
MODELS WITH
INPUT OF 45,000 THRU
75,000 BTU
I339
1
⁄ " drain
2
1
⁄ " drain
2
1
⁄ " drain
2
25