Ao Smith 100187863 Exhaust Condensate Elbow Kit 4 in

Product Description

The AO SMITH 100187863 is an aluminum exhaust and condensate elbow kit designed for use in condensing water heater venting systems. This kit provides a pre-formed elbow fitting that handles both flue gas exhaust and condensate drainage in a single assembly. At 4 inches in diameter, it fits standard direct-vent and power-vent configurations where combined exhaust and condensate management is required. Licensed plumbers and HVAC technicians install this component during new installations or service calls on condensing water heating equipment.

This elbow kit is suited for residential and light commercial condensing water heater applications. It is typically installed at the appliance exhaust outlet or at a venting transition point where a directional change is needed and condensate must be directed away from the heat exchanger. The aluminum construction resists corrosion from acidic condensate produced during high-efficiency combustion cycles.

Key Features

• Aluminum construction provides corrosion resistance against acidic flue condensate
• 4-inch diameter fits standard condensing water heater vent connections
• Combined exhaust and condensate elbow design simplifies venting assembly
• Kit format includes components needed for a complete elbow installation

Compatibility

Designed as an OEM-style replacement elbow kit for AO SMITH condensing water heater venting systems requiring a 4-inch exhaust and condensate elbow fitting.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician in accordance with local codes and the appliance manufacturer instructions. Shut off the water heater and allow it to cool before disconnecting any venting components. Ensure all vent joints are properly sealed per the appliance venting specifications and that condensate drainage is directed to an approved drain. Follow applicable provisions of the IFGC and local mechanical codes for venting condensing appliances.

Technical Specifications

• Diameter: 4 inches
• Material: Aluminum
• Component Type: Exhaust and Condensate Elbow Kit

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100187863