Detroit Radiant TP-211A Circuit Board

The Detroit Radiant TP-211A is a specialized 24V circuit board designed as the direct OEM replacement for the obsolete MARK17X-24 and the subsequent MARK17U-24 ignition modules. As a veteran-grade infrared heater control module, this board is engineered specifically for Re-Verber-Ray HL and RVA series tube heaters, as well as various agricultural heating applications. This Detroit Radiant replacement part manages the critical ignition sequence, including the 45-second pre-purge, glo-bar power cycle, and continuous flame monitoring via remote sense flame rods. Because this updated TP-211A ignition board utilizes a consolidated ground terminal and lacks the APS1/APS2 terminals found on older versions, a jumper to the 24V terminal is required during field installation to ensure proper pressure switch logic. Maintaining positive earth ground and correct polarity is essential for the flame sensing circuit to prevent nuisance lockouts and ensure reliable heat delivery in demanding commercial environments.

Key Benefits:

• Direct OEM Compatibility: Specifically engineered to replace MARK17U-24 and MARK17X-24 modules without extensive bracket modifications.
• Advanced Logic Control: Orchestrates the full 24V ignition sequence and safety interlocks for Detroit Radiant low-intensity tube heaters.
• Remote Sense Integration: Designed for use with a dedicated flame rod to provide precise flame rectification and system safety.
• Industrial-Grade Reliability: Built to withstand the high-cycle demands of agricultural and industrial HVACR environments.
• Streamlined Wiring: The updated design consolidates ground terminals and logic for more efficient field servicing.

Common Questions:

Is the TP-211A a direct substitute for the MARK17X-24?
Yes, the TP-211A is the official Detroit Radiant replacement for the MARK17X-24. Note that rewiring is required, as the newer board uses a remote sense flame rod configuration and requires jumping the APS1 wire to the 24V terminal.

Why is my heater going into lockout after installing this board?
The most common cause of lockout with the TP-211A is a lack of positive earth ground or reversed polarity. This board requires a clean ground reference to detect the micro-amp signal from the flame rod.

Does this board control the glo-bar ignitor directly?
Yes, the TP-211A manages the 24V power supply to the glo-bar, maintaining power for 45 seconds before opening the gas valve and cutting power to the ignitor just before the trial for ignition ends.

This item is not eligible for free shipping.

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.