Modine 53794 Ignition Control Board Single Stage

Product Description

The MODINE 53794 is a single-stage ignition control board designed for gas-fired unit heaters equipped with direct spark ignition (DSI) systems. This board manages the ignition sequence, flame sensing, and safety lockout functions that are core to reliable DSI operation in commercial and industrial heating applications. Licensed HVAC technicians and gas appliance service professionals install and replace this board when diagnosing ignition failures, nuisance lockouts, or control faults in Modine HD Series and compatible unit heaters. The 53794 is a direct OEM-replacement part, restoring factory ignition performance without modifications to the heater wiring or gas valve circuit.

This ignition control board is used in gas-fired unit heaters installed in commercial, industrial, and light-manufacturing environments such as warehouses, garages, and workshops. It is specifically designed for Modine HD Series heaters with direct spark ignition systems manufactured after May 2007, as well as a broad range of BTC, BTS, HDB, HDC, IPT, PTC, PTP, and PTS series unit heaters. Replacement is typically required following ignition board failure, flame-sense circuit degradation, or as part of a preventive maintenance protocol on aging DSI controls.

Key Features

• Single-stage ignition control for gas-fired direct spark ignition unit heaters
• Manages ignition sequencing, flame sensing, and safety lockout logic
• OEM-replacement design for Modine HD Series and related unit heater families
• Compatible with a wide range of Modine BTC, BTS, HD, HDB, HDC, HDS, IPT, PTC, PTP, and PTS model series
• Direct-spark ignition architecture eliminates standing pilot, reducing fuel consumption and improving reliability

Compatibility

Compatible with the following Modine unit heater models: BTC215, BTC260, BTC310, BTS150, BTS175, BTS200, BTS250, BTS300, BTS350, BTS400, HD30 after 5/07 with direct spark ignition, HD45 after 5/07 with direct spark ignition, HD60 after 5/07 with direct spark ignition, HD75 after 5/07 with direct spark ignition, HD100 after 5/07 with direct spark ignition, HD125 after 5/07 with direct spark ignition, HDB60, HDB75, HDB100, HDB125, HDC60, HDC100, HDC125, HDS30 after 5/07 with direct spark ignition, HDS45 after 5/07 with direct spark ignition, HDS60 after 5/07 with direct spark ignition, HDS75 after 5/07 with direct spark ignition, HDS100 after 5/07 with direct spark ignition, HDS125 after 5/07 with direct spark ignition, IPT50, IPT60, IPT75, IPT100, IPT125, IPT150, IPT175, IPT200, PTC55, PTC65, PTC85, PTC110, PTC135, PTC155, PTC156, PTC180, PTC215, PTC260, PTC310, PTP150, PTP175, PTP200, PTP250, PTP300, PTP350, PTP400, PTS150, PTS175, PTS200, PTS250, PTS300, PTS350, PTS400.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified gas appliance service professional in accordance with applicable local codes and the IFGC. Shut off gas supply and disconnect electrical power to the unit heater before removing the existing control board. Verify that the replacement board is mounted securely and that all wiring connections are fully seated before restoring power and initiating a test ignition cycle. Do not attempt to repair or modify the board circuit.

Technical Specifications

• Ignition Type: Direct Spark Ignition (DSI)
• Number of Stages: 1
• Application: Gas Fired Unit Heater

Standard Information

• Brand: MODINE
• Manufacturer Part Number: 53794