Carrier KR11AZ712 Blower Pulley 320735-701 the 510-312-209 is supplied with

the 510-312-209 is supplied with a 3/4 inch NPT brass well for immediate immersion mounting into the boiler section or supply manifold

always cross-reference the York 026-34428-000 part number with your unit's bill of materials

Does this assembly include the motor

it ensures the combustion process only initiates when proper integrated venting and airflow are established

1/20 HP motor operates at a fixed speed of 3300 RPM

Carrier KR11AZ712 Blower Pulley 320735-701 the 510-312-209 is supplied withThe Carrier KR11AZ712 Blower Pulley is a critical drive component engineered for precise airflow management in commercial HVAC systems, specifically compatible with Carrier air handlers and rooftop units. This fixed bore blower pulley is designed to provide consistent torque transfer between the drive motor and the blower shaft, ensuring the system maintains its calculated CFM output. Constructed from high grade cast iron, this HVAC drive pulley