Modine 3H0368490001 Board

The Modine 3H0368490001 Time Delay Relay Board is a critical OEM component designed for high-performance unit heater control systems. This terminal board with time delay relay serves as the direct replacement for 3H36849-1 and 5H75039, commonly utilized in older 101 and 102 series Modine Hot Dawg HD models manufactured before May 2007. Built to withstand industrial environments, this board regulates hot surface ignition (HSI) cycles by managing the duration between input signals and contact operation. It effectively integrates the functions of the legacy 5H75028 terminal board and 5H75039 relay into a single, streamlined assembly. This HVAC replacement part is compatible with HD30, HD45, HD60, and HD75 units, ensuring the power exhauster and blower motor operate in the correct sequence to prevent heat exchanger stress. Verify your unit’s wiring diagram and manufacture date to ensure 120/240 VAC compatibility before installation on HSI ignition type units.

• OEM Compatibility: Acts as an exact replacement for discontinued part numbers 3H36849-1 and 5H75039, maintaining original factory specifications.
• Circuit Protection: Controls the time delay relay function to manage the post-purge and fan-off delay cycles, preventing residential and commercial unit overheating.
• Simplified Wiring: Consolidates older two-part terminal systems into a modern control board layout for faster field installation.
• Rugged Construction: Engineered to handle the electrical noise and vibration typical of industrial HVAC applications.

What Modine models use the 3H0368490001?
This board fits 101 and 102 series Modine Hot Dawg heaters, specifically HD30, HD45, HD60, and HD75 units produced before May 2007 that utilize hot surface ignition.

Can this replace the older separate terminal board and relay?
Yes, the 3H0368490001 is designed to replace both the 5H75028 terminal board and 5H75039 time delay relay, combining their functions into one HVAC control board.

How do I verify if this is the correct board for my unit?
Confirm that your unit uses Hot Surface Ignition and cross-reference the serial number to ensure it was manufactured prior to the 2007 transition to newer control layouts.

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.