Rheem RTGH Product Guide

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15PRODUCT GUIDE | TANKLESS GAS WATER HEATERS

Rheem

Commercial Tankless Common Venting

Header kits include all required venting pieces to connect multiple units. Additional vent run accessories are required to complete

installation. Common venting header kits are available for inline or back to back installations, direct vent or room air intake

options, using 6”, 8” and 10” trunk diameters.

Trunk

Diameter

Number

of units

Direct Vent

Part No.

Room Air

Part No.

2 SP20906A SP20907A

3 SP20906B SP20907B

4 SP20906C SP20907C

2 SP20908A SP20909A

3 SP20908B SP20909B

4 SP20908C SP20909C

5 SP20908D SP20909D

6 SP20908E SP20909E

7 SP20908F SP20909F

8 SP20908G SP20909G

10"

2 SP20910A SP20911A

3 SP20910B SP20911B

4 SP20910C SP20911C

5 SP20910D SP20911D

6 SP20910E SP20911E

7 SP20910F SP20911F

8 SP20910G SP20911G

9 SP20910H SP20911H

10 SP20910J SP20911J

Image

No.

Part

Description

6" 8" 10"

1 Air Intake Branch Tee SP20918AD SP20918L SP20918AE

2 87 Degree Elbow SP20918BE SP20918M SP20918BM

3 45 Degree Elbow SP20918BF SP20918N SP20918BN

4 Straight Pipe, 1' SP20918BG SP20918P SP20918BP

5 Straight Pipe, 2' SP20918BH SP20918R SP20918BR

6 Straight Pipe, 3' SP20918BJ SP20918S SP20918BS

7 Straight Pipe, 6' SP20918BK SP20918T SP20918BT

90 Degree Elbow

Vertical Support

SP20918BL SP20918U SP20918BU

9 Bird Screen SS SP20918AY SP20918V SP20918AZ

10 Tee Termination SP20918BA SP20918W SP20918BB

11 Support Clamp SP20918AW SP20918AA SP20918AX

Trunk

Diameter

Number

of units

Direct Vent

Part No.

Room Air

Part No.

2 SP20912A SP20913A

3 SP20912B SP20913B

4 SP20912C SP20913C

2 SP20914A SP20915A

3 SP20914B SP20915B

4 SP20914C SP20915C

5 SP20914D SP20915D

6 SP20914E SP20915E

7 SP20914F SP20915F

8 SP20914G SP20915G

10"

2 SP20916A SP20917A

3 SP20916B SP20917B

4 SP20916C SP20917C

5 SP20916D SP20917D

6 SP20916E SP20917E

7 SP20916F SP20917F

8 SP20916G SP20917G

Inline Header Kits

Vent Run Accessories

Back to Back Header Kits

NOTE: Diagrams illustrate direct vent and horizontal exhaust. Room air intake and

vertical exhaust configuration also available, but not pictured.

For more information, visit

Rheem.com/commercial-tankless