Daikin-McQuay 20162901SP Primary Limit Switch OEM Replacement

The Daikin-McQuay 20162901SP is an OEM primary limit switch (primary high-limit control) engineered as a direct replacement for Daikin Applied and legacy McQuay commercial HVAC equipment. The primary limit switch serves as a critical safety device within the heating section of air handling units, rooftop units, and gas-fired HVAC systems, automatically interrupting the heating circuit when temperatures exceed the pre-set safe operating threshold.

Key Features:

• Factory OEM replacement part — ensures correct fit, wiring alignment, and calibrated trip point for Daikin-McQuay equipment
• Primary high-limit function — monitors heat exchanger or burner compartment temperature and opens the control circuit upon over-temperature detection
• Safety-critical design — protects the heat exchanger, burner assembly, and downstream components from thermal damage
• Durable construction built to withstand the thermal cycling and vibration demands of commercial-duty HVAC operation
• Direct drop-in replacement simplifies field installation and restores system to factory specification

Specifying OEM Daikin-McQuay replacement controls such as the 20162901SP ensures that the safety circuit operates within the original engineered parameters. This primary limit switch is an essential component for HVAC technicians performing scheduled maintenance or emergency repairs on Daikin Applied and McQuay commercial heating and air handling systems.