Rinnai Common Vent Spec Sheet Specification

COMMON VENT SYSTEM

Features and Benefits

The Common Venng System provides for longer vent lengths and fewer wall or roof penetraons than convenonal single-unit venng. CVent provides the necessary components for both combuson air and exhaust and is made by Ubbink, the same supplier for Rinnai's innovave line of concentric venng. CVent ulizes a CSAcered and tested polypropylene venng material. The various secons are self locking and sealing and can be pushed together without use of cement or glue. CVent can only be used with Rinnai’s RU98 condensing water heaters.

For combuson air venng, Rinnai’s Common Venng System ulizes both CVent components and, if necessary for extended vent runs, schedule 40 PVC.

The CVent Common Venng System can be used with up to 8 water heaters with a 41 foot equivalent vent length, however if used with 7 or fewer units, the maximum equivalent vent length extends to 100 feet.

Advanced features include a precision-made check valve to prevent exhaust gases from penetrang non-operang water heaters, avoiding negave impacts on combuson and reliability, as well as joint sockets designed to prevent condensate from gathering in gaps and degrading gaskets.

The current version of CVent is made of polypropylene (PPtl) and is only for U.S. installaons.

Model Applicability

The common vent system is CSA cered (ANSI Z21.10.3, Gas Water Heaters Standards) for use only with the Rinnai tankless condensing water heater RU98i (REU-KB3237FFUD-US).

#790006 Cvent Starter Kit (Back-

2Back or InLine)

Rinnai Corporation • 103 International Drive • Peachtree City, GA 30269 • Toll-Free: 1-800-621-9419 • Fax: 678-829-1666 • www.rinnai.us 1 SP-CV-02 (2/13)

#790007 CVent InLine Kit

(Combustion Air & Exhaust)

#790008 CVent Back-2-Back Kit

(Combustion Air & Exhaust)

COMMON VENT SYSTEM

When ordering the CVent components and the Tankless Rack System (TRS) together, please use the following table and part numbers.

CVent Components for the TRS

Back to

back Add-

on Kit

790008

18” Extension 790020

Part No. Configuration

For No. of

Water

Heaters

CVent

Starter Kit

790005

CVent

InLine Kit

790007

CV8IL4 in-line 4 1 4

CV8IL5 in-line 5 1 5 2

CV8IL6 in-line 6 1 6 2

CV8IL7 in-line 7 1 7 2

CV8IL8 in-line 8 1 8 2

CV8BB4 back-to-back 4 1 2

CV8BB5 back-to-back 5 1 1 2

CV8BB6 back-to-back 6 1 3

CV8BB7 back-to-back 7 1 1 3 2

CV8BB8 back-to-back 8 1 4 2

Key: CV = common vent; 8 = 8 inch diameter; IL/BB= in-line/back-to-back; 4/5/6/7/8 = no. of water heaters

When ordering the CVent exhaust components on their own, please use the following table and part nos.

Length/

Rinnai PN Description Ø Diameter

790005 CVent STARTER KIT, 8-inch For Back-2-Back or InLine

KIT COMPONENTS:

CVENT ENDPIECE (EXHAUST) W/ CLEANOUT & CONDEN-

CVENT COMBUSTION AIR ENDPIECE, D8

CVENT CONDENSATE TRAP (32mm Connection)

CVENT DRAIN HOSE

CVENT DRAIN HOSE CLAMP, L48 UBBINK INSTALLATION INSTRUCTIONS

CENTROCERIN LUBRICANT

8" 1

8” 1

48” 1

2 1

Other Qty.

Rinnai Corporation • 103 International Drive • Peachtree City, GA 30269 • Toll-Free: 1-800-621-9419 • Fax: 678-829-1666 • www.rinnai.us 2 SP-CV-02 (2/13)

COMMON VENT SYSTEM

Parts / Kits

Length/

Rinnai PN Description Ø Diameter

790007

790008

790001

790002 CVent 8-in Flat Roof Flashing

790003 CVent 8-in Pitched Roof Flashing

790004 Cvent 8-in Wall Termination Kit (Combustion Air & Exhaust)

CVent InLine Kit, 8-in Header Kit For InLine Cumbustion Air & Exhaust KIT COMPONENTS:

CVENT COLLECTOR, 1 CONNECTION, D8 X L20 X D4 (Exhaust)

CVENT ELBOW D4 X 87° WITH CLEANOUT

CVENT EXTENTION, D4 X L18

CVENT APPLIANCE ADAPTER, CHECK VALVE AND HOSE TRAP

CVENT COMBUSTION AIR COLLECTOR, 1 CONNECTION, D8 X L20 X D3

CVENT COMBUSTION AIR FLEX FITTING, D3

CENTROCERIN LUBRICANT

CVent Back-2-Back Kit, 8-in Header Kit For Back-2-Back Combustion Air and Exhaust

KIT COMPONENTS:

CVENT COLLECTOR, 2 CONNECTION, D8 X L20 X D4 X D4 (Exhaust)

CVENT ELBOW D4 X 87° WITH CLEANOUT

CVENT EXTENSION, D4 X L18

CVENT APPLIANCE ADAPTER WITH CHECK VALVE AND HOSE TRAP

CVENT COLLECTOR, 2 CONNECTION, D8 X L20 X D3 X D3 (Combustion Air)

CVENT COMBUSTION AIR FLEX FITTING, D3

CENTROCERIN LUBRICANT

Cvent 8-in Roof Termination Kit

CVENT 8-IN ROOF TERMINATION

PP-PVC ADAPTER (For Combustion Air PVC Transition)

CENTROCERIN LUBRICANT

CVENT FLAT ROOF FLASHING

CVENT PITCHED ROOF FLASHING, INCLUDING STORM COLLAR

WALL TERMINATION + STAINLESS STEEL GRATE + WALL PLATE (2pc)

CENTROCERIN LUBRICANT

8" X 4” 20" 1

4" 87° 1 4" 18" 1

5” X 4” X 3” 1

8” X 3” 20” 1

3” 24” 1

8" 20" 1

4" 87° 2 4" 18” 2

5” X 4” X 3” 10" 2

8” X 3” 20” 1

3” 24” 2

8" 1 8" 1

8" 1

8" 3' 1

Other Qty.

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