Twin Pipe: Example Vent Applications - Rinnai I Series Installation And Operation Manual

Slope horizontal exhaust 1/4 in. per foot towards the boiler. DO NOT slope combustion air pipe towards the boiler.
CAUTION
This configuration requires the use of
a Concentric Vent Termination.
2 in. or 3 in.
PVC/CPVC
IPEX / Royal
Concentric
Side Wall
Termination
Configuration
2 in. or 3 in.
Schedule 40
PVC/CPVC
Snorkel
Termination
Configuration
2 in. or 3 in.
Schedule 40
PVC/CPVC
Elbow or Tee
Side Wall
Termination
Configuration
2 in. or 3 in. PVC
Low
Profile
Termination
Configuration
38
Rinnai cautions against installing the boiler in applications with venting in different
pressure planes. It is possible to have poor performance with this installation.
Tee not permissible
for intake
termination
This configuration requires the use of a Concentric
Vent Termination.
2 in. or 3 in.
PVC/CPVC
IPEX /Royal
Concentric
Vertical
Termination
Configuration
2 in. or 3 in.
Schedule 40
PVC/CPVC
Standard
Upside Down
"U" Vertical
Termination
Configuration
2 in. or 3 in.
Schedule 40
PVC/CPVC Tee
Vertical
Termination
Configuration
WARNING
Exhaust and
combustion air
MUST NOT be
brought
together into
a single PVC
pipe using a
Combustion
pipe fitting.
Rinnai I-Series Condensing Boiler Combi Manual
Tee not permissible
for intake
termination
Single
Pipe
Exhaust
Air