S87D1012 | Honeywell Direct Spark Ignition (DSI) Control Module
Honeywell · PLCs & Industrial Controllers
Description The Honeywell S87D1012 is a direct spark ignition (DSI) control module designed to manage gas burner ignition and safety sequences. It generates high-voltage potential for main burner ignition, monitors flame presence, and provides automatic lockout protection if ignition fails within 11 seconds. Technical Specifications Condition New/Never Used Surplus Brand Honeywell Category HVAC Controls Part Number S87D1012 Subcategory Ignition Control Module Ignition Type Direct Spark Ignition (DSI) Lockout Time 11 Seconds Control Function Ignition Sequence and Gas Control Operation Ignition Voltage High Voltage Spark Output (Generated by Module) Reset Method Manual Reset via Thermostat Compatible Systems Gas Burners, Furnaces, and Boilers with Direct Spark Ignition Gas Control Compatibility Modules (Except S87C) for Gas Controls Rated 2.0A or Less Trial for Ignition One Trial Before Lockout Power Source Low Voltage AC (from Furnace Control Circuit) Flame Detection Flame Rectification Sensing Circuit Protection Feature Automatic Lockout on Ignition Failure Enclosure Type Compact, Surface-Mount Module Application Controls Ignition, Gas Valve, and Flame Supervision Operating Environment HVAC Equipment, Heating Systems Mounting Type Panel or Chassis Mount Weight 1.00 lbs Information About S87D1012 The S87D1012 is part of Honeywell’s proven S87 Series of ignition control modules, designed for reliable operation in residential and light commercial heating systems. It coordinates all essential ignition and flame safety functions, including spark generation, gas valve control, and system lockout. When the thermostat calls for heat, the module energizes the gas valve and produces a high-voltage spark to ignite the main burner. If ignition does not occur within 11 seconds, the module enters lockout mode to prevent unsafe gas buildup. The control can be manually reset from the thermostat, restoring operation after fault correction. Built for durability, the S87D1012 ensures consistent ignition performance in demanding HVAC environments. Key Features: Reliable Ignition Control: Generates high-voltage potential for direct spark ignition of main burners, ensuring quick and stable lighting. Automatic Safety Lockout: Initiates a system lockout after 11 seconds if ignition fails, preventing unburned gas accumulation. Thermostat Reset Function: Allows convenient reset of the module directly from the room thermostat after a lockout event. Gas Valve Compatibility: Works with any combination gas control rated at 2.0A or less for direct spark applications. Single Trial Ignition Design: Provides one ignition attempt per heating cycle for precise and safe burner operation. Integrated Flame Detection: Uses flame rectification to confirm burner operation and maintain system safety. Compact, Durable Construction: Engineered for long service life in HVAC systems with stable electronic components and robust housing. Simplified System Integration: Easily integrates with Honeywell gas valves, thermostats, and safety interlocks for cohesive control. Reliable Safety Performance: Tested for consistent ignition response and dependable flame supervision under varied conditions. Maintenance-Friendly Design: Offers clear lockout indication and fast reset capability, minimizing service downtime. The S87D1012 delivers the reliability and precision required for safe, efficient ignition control in gas-fired HVAC systems, ensuring consistent burner performance and dependable safety operation.
Brand: Honeywell · Category: PLCs & Industrial Controllers
Key features
- Reliable Ignition Control: Generates high-voltage potential for direct spark ignition of main burners, ensuring quick and stable lighting.
- Automatic Safety Lockout: Initiates a system lockout after 11 seconds if ignition fails, preventing unburned gas accumulation.
- Thermostat Reset Function: Allows convenient reset of the module directly from the room thermostat after a lockout event.
- Gas Valve Compatibility: Works with any combination gas control rated at 2.0A or less for direct spark applications.
- Single Trial Ignition Design: Provides one ignition attempt per heating cycle for precise and safe burner operation.
- Integrated Flame Detection: Uses flame rectification to confirm burner operation and maintain system safety.
- Compact, Durable Construction: Engineered for long service life in HVAC systems with stable electronic components and robust housing.
- Simplified System Integration: Easily integrates with Honeywell gas valves, thermostats, and safety interlocks for cohesive control.
- Reliable Safety Performance: Tested for consistent ignition response and dependable flame supervision under varied conditions.
- Maintenance-Friendly Design: Offers clear lockout indication and fast reset capability, minimizing service downtime.
Specifications
| Manufacturer part number | S87D1012 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | S87D1012 |
| Subcategory | Ignition Control Module |
| Ignition Type | Direct Spark Ignition (DSI) |
| Lockout Time | 11 Seconds |
| Control Function | Ignition Sequence and Gas Control Operation |
| Ignition Voltage | High Voltage Spark Output (Generated by Module) |
| Reset Method | Manual Reset via Thermostat |
| Compatible Systems | Gas Burners, Furnaces, and Boilers with Direct Spark Ignition |
| Gas Control Compatibility | Modules (Except S87C) for Gas Controls Rated 2.0A or Less |
| Trial for Ignition | One Trial Before Lockout |
| Power Source | Low Voltage AC (from Furnace Control Circuit) |
| Flame Detection | Flame Rectification Sensing Circuit |
| Protection Feature | Automatic Lockout on Ignition Failure |
| Enclosure Type | Compact, Surface-Mount Module |
| Application | Controls Ignition, Gas Valve, and Flame Supervision |
| Operating Environment | HVAC Equipment, Heating Systems |
| Mounting Type | Panel or Chassis Mount |
| Weight | 1.00 lbs |
| Product type | Ignition Control Module |
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