Rheem RTGH Product Guide

14 PRODUCT GUIDE | TANKLESS GAS WATER HEATERS
Tankless Venting
Complete Your Installation with Rheem
®
Venting Components
and Accessories
Horizontal Vent Kit
Low profile cone design for
concentric direct vent systems.
Includes 90˚ elbow, short,
low-profile termination and
installation screws.
• RTG20231 - Up to 6" walls
• RTG20234 - Up to 8" walls
Economy Vent Kit
• RTG20210 - Up to 10" walls
Vertical Termination Kit
Concentric direct vent systems.
Stainless steel and galvanized
construction. Includes vertical
termination cap, storm collar,
6-12 pitch roof flashing and
installation screws. Vent pipe
not included.
• RTG20211 - Vertical Vent Kit
Additional venting and accessories
are available. See Catalog for details.
Stainless Steel Vent System | 3" x 5" Concentric Category III Metal Fab
6" Vent Length
5.66" overall length
• RTG20151W
24" Vent Length
23.66" overall length
• RTG20151C-1
36" Vent Length
35.66" overall length
• RTG20151D-1
12" Vent Length
11.66" overall length
• RTG20151R
Horizontal or Vertical
Concentric Termination
Combines a two-pipe vent
system to a single, concentric
through-the-wall or roof
penetration. Designed for
two-pipe direct vent, fits PVC
or CPVC venting. Installed
dimensions: 39"H x 7-1/4"D
• SP20245 - For 3" PVC
Venting
Horizontal Vent
Termination
Low profile design for two-
pipe direct vent, fits PVC
or CPVC venting. Installed
dimensions:
11-3/4"W x 8"W x 2-1/2"D
• SP20286 - For 3" PVC
Venting
• SP20285 - For 2" PVC
Venting
PVC Termination Kits | Allow for an aesthetic and easy installation
Stainless Steel Metal Fab Venting Components and Accessories
90˚ Elbow
8.1" rise – 8.1" run
• RTG20151A-1
45˚ Elbow
8.6" rise – 3" run
• RTG20151B-1
Wall Thimble
17" wide for up to
6" deep walls, with
drywall and stucco
rings, ideal for new
construction
• RTG20151Z
Wall Hanger
2-point pivot
mounting
• RTG20151H
Venting for Condensing Tankless RTGH Series
Venting for Mid Efficiency Tankless RTG Series
VENTING OPTIONS
AND INSTALLATIONS
All indoor tankless units must be vented
to the outdoors using manufacturer
approved venting material.
3"/5" Concentric Vent System
PVC Vent System
Outdoor
Venting details, including clearances,
instructions and diagrams can be
found in the “Use & Care Manual” of
Rheem indoor tankless water heaters.
(ULCS636 Pipe must be used for
Canada.)
* Outdoor units do not require venting materials.
INDOOR
Horizontal
vent
termination
INDOOR
Horizontal
vent
termination
OUTDOOR*
Recess box
installation
OUTDOOR*
installation
INDOOR
Vertical
vent
termination
INDOOR
Vertical
vent
termination
PVC VENT SYSTEM
OUTDOOR
3"/5" CONCENTRIC
VENT SYSTEM