The White-Rodgers 50E70-820 is a non-integrated hot surface ignition (HSI) control module, engineered as a direct replacement for Trane commercial rooftop and packaged HVAC systems. This module governs the ignition process to ensure safe and reliable furnace operation, without managing blower or fan functions.Key Features:
This control is a direct replacement for Trane Kit 17852 and is designed specifically for use in commercial HVAC systems such as packaged rooftop units.Kit Includes:
- Designed for single-stage heating systems
- Hot Surface Ignition (HSI) with 120 VAC ignitor voltage
- Input Voltage: 18 to 30 VAC, 60 Hz
- Mounting via standoffs or included adapter board
- Diagnostic red and green LED indicators
- Flame current test pins for easy flame signal monitoring
- Includes adapter board and wiring harness for streamlined installation
- Operating Temperature Range: -40°F to 175°F (-40°C to 79°C)
- Humidity Range: 0% to 95% RH (non-condensing)
- Ignitor Warm-Up Time: 45 seconds
- Flame Establishing Time: 0.8 seconds
- Flame Failure Response Time: 2.0 seconds
- Automatic Reset Time: 60 minutes
- Gas Valve Relay Rating: 1.5 A at 30 VAC (0.6 power factor)
- Ignitor Relay Rating: 5.0 A max at 132 VAC
- Minimum Flame Current for Detection: 1 µA DC
- Maximum Flame Current for Non-Detection: 0.1 µA DC
- Maximum Allowable Leakage Resistance: 100 MΩ
This control is a direct replacement for Trane Kit 17852 and is designed specifically for use in commercial HVAC systems such as packaged rooftop units.Kit Includes:
- 50E70-820 Control Module
- 24 VAC Wiring Harness (0155-0263)
- Adapter Board (59-4819)
- Fault Code Label
- Installation Instructions

