Carrier HK06WC030 Air Flow Switch

The Carrier HK06WC030 Air Flow Switch is a factory-authorized pressure differential switch engineered for precise performance monitoring in commercial and residential HVAC systems. Designed with a single-pole double-throw (SPDT) configuration, this switch provides versatile circuit control, allowing the system to trigger proof-of-flow signals or lockout sequences based on static pressure changes. It operates within a sensitivity range of 0.05 to 2.0 inches water column (wc), making it an essential component for detecting restricted filters, blower motor failures, or localized airflow obstructions.

Constructed for demanding field environments, the HK06WC030 features a durable steel housing and must be mounted vertically with the pneumatic ports oriented downward to ensure the internal diaphragm cycles correctly. This OEM replacement part is essential for maintaining the safety sequence in units such as the 50P3 and 39LC series, where accurate delta-P measurement is required to prevent heat exchanger or compressor damage. Utilizing high-quality compression fittings for 1/4-inch OD tubing, it ensures a secure air sampling connection for consistent set-point reliability.

• Adjustable Pressure Range: Precisely monitors air flow triggers from 0.05? to 2.0? wc, allowing for technical field-tuning to specific duct requirements.
• Heavy-Duty SPDT Contacts: Provides the flexibility to utilize either normally open or normally closed logic for system interface.
• OEM Compatibility: A direct factory replacement part for Carrier, Bryant, and Payne equipment, ensuring standard mounting footprints.
• Broad Temperature Operating Range: Rated and tested for ambient environments ranging from -40°F to 190°F.

Can this switch be used to monitor filter status?
Yes, by measuring the differential pressure across the filter bank, this switch can be set to trip when the pressure drop exceeds the recommended threshold, signaling a dirty filter condition.

Does this part require a specific mounting orientation?
Yes, for the diaphragm to operate within the specified calibration range, the HK06WC030 must be mounted on a vertical plane with the pressure ports facing down.

What is the purpose of the manual adjustment screw?
The screw allows a technician to calibrate the trip point within the 0.05? to 2.0? wc range to match the specific static pressure profile of the fan or air handler.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.