KCM Series Manual 19
Comply with the exhaust clearances found in this Rinnai Installaon and Operaon Manual.
Only one appliance can be aached to the vent system.
Install the system according to the Centrotherm installaon instrucons included with the vent system.
The vent terminaon 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 secon.
Maintain the clearances shown in the gures below.
The following vent materials are for use with this appliance:
Cellular core PVC/CPVC
Radel, ABS, and/or Galvanized ducts.
Failure to use approved vent materials can result in property damage, personal injury, or death.
Flue Installaon with Centrotherm Venng (indoor models only)
Install the venng terminaon according to the diagrams and instrucons below.
11”
5”
Intake
Oponal
Vent
Slope horizontal exhaust run towards the water heater 1/4” per foot. slope combuson air pipe towards unit. Be
sure to dispose of condensate per local codes.