Rinnai REU-KB3237FFUD-US Installation Manual

Rinnai CVent 2
Descripon
The CVent Common Venng system provides longer vent lengths and fewer wall or roof penetraons than
convenonal single-unit venng. For the exhaust ue, CVent ulizes a CSA cered and tested venng (PPTL)
and for Canada ULC-S636-cered and tested venng (PPS) material from Ubbink, the same supplier for
Rinnai's innovave line of concentric venng. The various secons are self locking and sealing and can be
pushed together without use of cement or glue.
CVent is for use in U.S. and Canada only. PPTL components are cered for U.S. installaons whereas PPS
components are cered for Canadian installaons.
Installaon is cered for up to 10,200 feet. Refer to the Installaon and Operaon Manual for the tankless
water heater (RU98i, RUC98i or C199i) for appropriate dip switch selecon. Refer to High Altude
Installaon secon in this manual for appropriate de-rate values.
Model Applicability
The common vent system is CSA cered (ANSI Z21.10.3, Gas Water Heaters Standards) for use with the
following Rinnai tankless condensing water heaters only: RU98i (REU-KB3237FFUD-US),
RUC98i (REU-KBD3237FFUD-US), and C199i (REU-KBD3237FFUDC-US)
Installer Qualicaons .......................................... 2
Descripon ............................................................ 2
Model Applicability ............................................... 2
Safety Symbols ...................................................... 3
Warranty and Liability Exclusions ......................... 3
Specicaons ........................................................ 3
High Altude Installaon ...................................... 4
Parts/Kits ............................................................... 5
Sample Roof Installaon ..................................... 13
Sample Horizontal Terminaon Installaon……..14
Sample Vercal Terminaon Installaon……...….15
Venng Guidelines .............................................. 16
Maximum Equivalent Vent Length ...................... 17
CVent Terminaon Clearances ............................ 17
Combuson Air Requirements ........................... 19
Exhaust Vent Terminaon Clearances ................ 23
CVent Maintenance Clearances .......................... 26
Water Heater Clearances .................................... 26
CVent Installaon Instrucons ............................ 27
Common Header Check valve Maintenance ....... 32
Final Checklist ...................................................... 33
Appendix
Ubbink CVent Assembly Instrucons .................. 34
French Version .................................................... 44
Installer Qualicaons
Table of Contents
Improper installaon of the vent system and components, or failure to follow all installaon
instrucons, can result in serious injury.
WARNING
A licensed professional must install the common venng.
The installer should have skills such as
 connecng gas lines, water lines, valves, and electricity
 knowledge of applicable naonal, state, and local codes
If you lack these skills, contact a licensed professional.

Rinnai REU-KB3237FFUD-US Specifications

General

Brand	Rinnai
Model	REU-KB3237FFUD-US
Category	Water Heater
Language	English