Instructions / Assembly
43
Vertical Vent Installation
!
WARNING:
Follow the vent manufacturer’s installation 
instructions since design might vary from 
manufacturer to manufacturer. Improper vent 
installation can result in death, personal injury, 
product damage, and/or poor performance.
NOTICE:
Only Rheem-approved termination and parts should 
be used during installation.
Install a fire stop plate at every penetration of a 
floor or ceiling, whenever the vent is not running 
through a fire-rated shaft.
Maintain the recommended air space clearance to 
combustible materials and building insulation. 
Cut a hole through the roof and interior ceiling to 
accommodate the vent pipe.
Complete the vent pipe installation to the water 
heater vent collar. If required, use high temperature 
silicone sealant where the vent connector joins the 
water heater.
Support vertical and horizontal runs as described 
on page 36. Vertical supports are required every 
4 ft. (1.2 m) along a vertical pipe route, after every 
transition to vertical, and after every offset elbow.
NOTICE:
Free-standing vent pipe that penetrates a roof/
ceiling requires another means of support from a 
second location.
Determine the vent terminal height and install 
the vent pipe accordingly. Refer to “Vertical Vent 
Terminal Location” on page 44 for clearance 
requirements.
Install adequate flashing where the vent pipe 
passes through the roof.
Venting
INSTALLATION INSTRUCTIONS
Hole
Through Roof
C
L
Hole
Through Ceiling
1
2
A, B, C, D
4
5
3










