Cleveland Controls NS2-1049-05 Pressure Switch

The Cleveland Controls NS2-1049-05 Pressure Switch is a critical safety component engineered for precision monitoring in HVAC and air-handling systems. This fixed-setpoint differential air pressure switch is factory-calibrated to 1.10" W.C. (water column), making it a standard requirement for verifying proper inducer motor draft and airflow in high-efficiency furnaces and ventilation units. As a veteran-grade OEM HVAC replacement part, the NS2 series features a diaphragm-actuated snap-action switch designed to break the electrical circuit if the system detects inadequate venting or negative pressure, preventing unsafe combustion conditions. The inclusion of a sturdy mounting bracket ensures stable installation across various equipment chassis, while the high-impact housing protects internal components from the heat and vibration common in mechanical rooms. Technicians rely on the Cleveland Controls NS2-1049-05 for its repeatable accuracy and compatibility with a wide range of residential and commercial air handlers.

Key Benefits for Contractors

• Factory-Calibrated Precision: Pre-set at 1.10 inches of water column to ensure exact adherence to manufacturer airflow specifications without the need for field adjustment.
• Enhanced Equipment Safety: Designed to act as a failsafe, monitoring for blocked vents or failing inducer fans to protect the heat exchanger and prevent carbon monoxide issues.
• Broad Compatibility: An essential furnace pressure switch and air handler component compatible with numerous heating and ventilation brands utilizing Cleveland Controls hardware.
• Rugged Construction: Built to withstand commercial duty cycles, providing reliable pressure sensing in high-demand environments.
• Simplified Installation: Comes equipped with an integrated mounting bracket, streamlining the swap-out process during service calls.

Common Questions

What is the function of the 1.10" W.C. setpoint on this switch?
The 1.10" W.C. setpoint represents the specific pressure threshold required to close the internal contacts. If the system fails to reach this pressure—due to a restricted flue, faulty inducer, or cracked tubing—the NS2-1049-05 will prevent the ignition sequence for safety.

Can I use this switch as a replacement for a different pressure rating?
No. Pressure switches are calibrated to specific equipment requirements. Replacing a switch with a different W.C. rating can lead to dangerous operating conditions or frequent nuisance tripping. Always match the OEM specs exactly.

Is the mounting bracket removable for tight-clearance installs?
While the mounting bracket is included for standard installations, it is designed to provide a secure fit. Technicians should verify chassis clearance, as stable mounting is required to maintain the accuracy of the diaphragm's trigger point.

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.