Rinnai RUCS65i series Installation And Operation Manual page 29

3" or 4" PVC/
CPVC
Concentric
Side Wall
Termination
Configuration
3" or 4" PVC/
CPVC Snorkel
Termination
Configuration
3" or 4" PVC/
CPVC Tee Side
Wall
Termination
Configuration
3" or 4" PVC/
CPVC Low
Profile
Termination
Configuration
VENTING INSTALLATION SEQUENCE
1. Install the water heater.
2. Determine the termination method—sidewall or
vertical, concentric, or separate pipes, etc.
3. Determine proper location for wall or roof
penetration for each termination.
4. Install termination assembly as described in this
manual.
Table 8: Approved PVC/CPVC Vent Configurations
KCM Series Manual
3" or 4" PVC/
CPVC
Concentric
Vertical
Termination
Configuration
3" or 4" PVC/
CPVC
Standard
upside down
"U" Vertical
Termination
Configuration
3" or 4" PVC/
CPVC Tee
Vertical
Termination
Configuration
5. Install air and vent piping from water heater to
termination.
6. Slope horizontal exhaust run towards the water heater 1/4"
per foot. DO NOT slope combustion air pipe
towards unit. Be sure to dispose of condensate per
local codes.
7. Install pipe supports and brackets every 4 feet allowing for
movement from expansion or as per local code
requirements.
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