A.O. Smith BTX 80 Installation Manual and Vent Attenuation Assembly Instructions
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VENT ATTENUATION ASSEMBLY

INSTALLATION INSTRUCTIONS

The Vent Attenuation Assembly (VAA) is designed to provide a reduction in noise that may be transmitted through the vent pipe. This installation of this VAA is optional. Review directions thoroughly prior to installing the new VAA. Please contact the manufacturer of the water heater as shown in the instruction manual with any questions or for additional product support.

VENT ATTENUATION ASSEMBLY KIT PARTS LIST

The kit consists of the following items. If a part is missing, use the contact information in the instruction manual to acquire missing component(s).

•Vent Attenuation Assembly

•flexible tubing

•hose barb

•hex plug (installed on VAA)

•instruction sheet

VENT ATTENUATION ASSEMBLY INSTALLATION

The VAA is designed for both vertical and horizontal installations. The vertical installation does not require the additional hose barb and flexible tubing. However, the horizontal installation will require the hose barb and flexible tubing to release condensate buildup from the VAA. See instructions and diagrams that follow for a more detailed description.

Vertical VAA Installations (Recommended)

1.The VAA is designed to accept two inch PVC pipe into the adapters on both ends. The VAA can be installed to the piping from either side (there is no specific inlet or outlet). For optimum performance, install VAA as close as possible to the blower assembly.

2.Use standard PVC cement (not included with kit) and glue the two inch PVC pipe coming from the blower into the VAA.

3.Perform the same sequence on the PVC pipe coming from the exhaust side (vent terminal side) of the VAA.

4.Make sure the VAA and vent pipe is supported securely to a permanent fixture (stud or wall). Use standard support straps (not supplied with kit) that may be found at a local hardware store. Failure to properly support the VAA and the surrounding vent pipe could create a hazardous situation. DO NOT puncture any surface of the VAA.

5.Confirm that the hex plug is securely installed in the 1/2" fitting found on the center of the VAA pipe. It is imperative that the plug is secure and air tight to prevent any combustion gases escaping into the room. If the plug is not securely tightened, remove and reinstall using Teflon tape on the threads. Once installed along with the rest of the vent configuration, make sure to operate the unit through at least one heat up cycle to ensure there is no leakage around the plug or any joints of the VAA or vent pipe system.

FIGURE 10: Typical Vertical Installation

Horizontal VAA Installations

1.The VAA is designed to accept two inch PVC pipe into the adapters on both ends. The VAA can be installed to the piping from either side (there is no specific inlet or outlet). For optimum performance, install the VAA as close as possible to the blower assembly.

2.Use standard PVC cement (not included with kit) and glue the two inch PVC pipe coming from the blower into the

VAA. MAKE SURE THE 1/2" FITTING IS ON THE BOTTOM SIDE OF THE VAA. This will be used to run the condensate hose to a suitable drain. See typical vent installation in Figure 11.

3.Perform the same sequence on the PVC pipe coming from the exhaust side (vent terminal side) of the VAA.

4.Make sure the VAA and vent pipe is supported securely to a permanent fixture (stud or wall). Use standard support straps (not supplied with kit) that may be found at a local hardware store. Failure to properly support the VAA and the surrounding vent pipe could create a hazardous situation. DO NOT puncture any surface of the VAA.

5.Remove hex plug from the center pipe of the VAA. Locate the hose barb and install into the 1/2" fitting on the center of the VAA. Using Teflon tape on the threads, install hose barb into 1/2" fitting securely. It is imperative that the hose barb is secure and tight to prevent any combustion gases escaping into the room.

6.Locate flexible tubing. Slide one end of tube over the hose barb located on the center pipe of the VAA. The ridges on the hose barb should prevent the tube from sliding off, however, to ensure there are no leaks and possible dislocation from hose barb, use a wire tie or hose clamp (not supplied with kit) and secure.

7.Take the other end of the flexible tubing and form an 8 inch diameter circle approximately 3 feet down from the hose barb located in the VAA. To ensure that the circle (loop) maintains its shape, use two wire ties (not supplied with kit) to secure it.

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Contents Model BTX-80 Commercial GAS Water Heater Rough-In-Dimensions ROUGH-IN-DIMENSIONSReplacement Parts and Deliming Products Typical InstallationChemical Vapor Corrosion External DamageImproper Combustion Liquid Petroleum ModelsInstallation Water Connections Confined SpaceWater Potable Heating and Space Heating Closed Water SystemRelief Valve Connection of GAS PipeVenting Vent Pipe AssemblyVent Pipe Termination Planning the Vent SystemCondensate Preparation of Blower AssemblyCondensate System Figure Vent Terminal INSTALLATION, Sidewall Installation of Vent SystemVent Termination Figure Power Vent Wiring Schematic Figure Installation of Vertical Vent System Installation of Vent SYSTEM, SidewallVertical VAA Installations Recommended Vent Attenuation Assembly InstallationInch vent Horizontal VAA Installations Vent Pipe Preparation To Operate the Heater OperationStep E Step FFor Your Safety Read Before Lighting Temperature Regulation MaintenancePower Venter Maintenance High Temperature Limit SwitchCondensate Inside Tank Assembly Main BurnerTrouble Shooting Service and RepairMake sure gas and electric power are connected properly Water Heating Ignition SequenceTroubleshooting Trouble Shooting Guide Trouble ShootingLimited Warranty

BTX-80 specifications

The A.O. Smith BTX-80 is a high-efficiency water heater designed to meet the needs of both residential and light commercial applications. Engineered with the latest technology, this unit promises reliability and superior performance, making it a standout choice for those seeking an efficient hot water solution.

One of the primary features of the BTX-80 is its energy efficiency. With a high Energy Factor (EF) rating, this water heater is designed to minimize energy consumption while delivering reliable hot water. This feature not only helps owners save on utility bills but also contributes to a more sustainable living environment.

The BTX-80 utilizes advanced condensing technology, allowing it to extract heat from exhaust gases that would typically be expelled. This process enhances its efficiency and reduces the amount of fuel needed to heat water, ensuring that users benefit from lower operating costs. The unit comes equipped with a built-in power vent system, which allows for flexible installation options and an easy, straightforward setup.

Another notable characteristic of the A.O. Smith BTX-80 is its robust build quality. Designed with durable materials, it features a glass-lined tank that helps prevent rust and corrosion, extending the lifespan of the unit. The BTX-80 is also equipped with advanced insulation, which ensures minimal heat loss and improved energy retention.

Safety features are paramount when it comes to water heating, and the BTX-80 does not disappoint. It includes a fully integrated safety system that protects against overheating and excessive pressure, ensuring peace of mind for homeowners and business operators alike.

Additionally, the BTX-80 has a user-friendly digital display and diagnostic control system, allowing users to easily monitor and adjust settings. It also features multiple installation configurations to adapt to various space requirements.

In summary, the A.O. Smith BTX-80 water heater combines high energy efficiency, advanced condensing technology, robust construction, and user-friendly features. Ideal for those seeking a reliable and sustainable hot water solution, this model is a testament to A.O. Smith's commitment to innovation and quality in the water heating industry.
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