Rinnai RUCS65i Installation And Operation Manual page 19

Flue Installation with Centrotherm Venting (indoor models only)
Install the venting termination according to the diagrams and instructions below.

Comply with the exhaust clearances found in this Rinnai Installation and Operation Manual.

Only one appliance can be attached to the vent system.

Install the system according to the Centrotherm installation instructions included with the vent system.

The vent termination and air intake must be in the same pressure zone.

Do not exceed the maximum straight vent length with number of elbows as shown in the tables in the
following section.

Maintain the clearances shown in the figures below.
The following vent materials are NOT APPROVED for use with this appliance:
WARNING


Failure to use approved vent materials can result in property damage, personal injury, or death.
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.
Cellular core PVC/CPVC
Radel, ABS, and/or Galvanized ducts.
Vertical Termination
Horizontal Termination
KCM Series Manual
5"
Vent
11
"
Intake
Optional
19