Rinnai M060C Installation And Operation Manual page 36

Slope horizontal exhaust 1/4 in. per foot towards the boiler. DO NOT slope combustion air pipe
towards the boiler.
Rinnai cautions against installing the boiler in applications with venting in
CAUTION
different pressure planes. It is possible to have poor performance with this
installation.
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
Unbalanced venting. Intake
and exhaust terminated on
different pressure planes.
36
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
Tee not
permissible
2 in. or 3 in.
for intake
Schedule 40
termination
PVC/CPVC Tee
Vertical
Termination
Configuration
WARNING
Exhaust and
combustion air
MUST NOT be
brought together
into a single PVC
pipe using a pipe
fitting.
Exhaust
Rinnai M-Series Condensing Boiler Combi Manual
Tee not
permissible
for intake
termination
Single
Pipe
Combustion
Air