Honeywell S9200U

The Honeywell S9200U is a solid-state electronic ignition control for single-stage gas-fired heating and cooling appliances. It manages ignition sequencing, flame monitoring, and safety lockouts in a single integrated unit, simplifying furnace management and enabling advanced diagnostics. Microprocessor-controlled operation ensures precise sequencing and safety compliance across residential natural gas and liquid propane systems. ## Technical Specifications • Line Voltage: 120 VAC (97–132 VAC), 60 Hz • Low Voltage: 24 VAC (19–30 VAC), 60 Hz • Ignitor Voltage: 120 VAC (HSI) • Igniter Current: 5.0 A resistive @ 132 VAC output • Pre-purge Time: 30 seconds • HSI Warm-up: 17/27 or 30/30 seconds (1st/next trial) • Trial for Ignition: 4, 6, or 8 seconds (DIP switch configurable) • Post-purge Time: 15 seconds • Inter-trial Purge: 60 seconds • Auto Restart Delay: 60 minutes (after Soft Lockout) • Ignition Trials: Three (two retries if flame not sensed on first trial) • Flame Failure Response Time: 2 seconds maximum @ 1 µA • Thermostat Anticipator Setting: 100 mA (Stage 1) • Operating Temperature: −40 to 175 °F (−40 to 79 °C) • Operating Humidity: 0% to 95% non-condensing ## Key Features • Hot surface igniter (HSI) for main burner ignition at 120 VAC • Flame rectification circuit for presence monitoring • Safety monitoring of pressure switch, high-temperature limit, and rollout functions • Microprocessor control of sequencing and safety functions • Fan control for induction-type circulating motors • Tri-color LED status indication (Red/Amber/Green) • EnviraCOM™ communication for local and remote diagnostics • Twinning capability support • Replaces over 195 existing furnace controls with compatible wire harnesses ## Typical Applications Residential natural gas and liquid propane furnaces requiring single-stage heating and cooling control with integrated ignition, flame sensing, and safety lockout. ## Compatibility & Integration • Conventional 24 VAC single-stage heat/cool thermostats • VisionPRO and FocusPRO EnviraCOM™-enabled thermostats • Compatible with QuickLook handheld diagnostics, EnviraLNK web application, and W8735D Telephone Access Module