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> Honeywell S87B direct spark ignition control module
Honeywell S87B direct spark ignition control module
The S87 is a low voltage, solid state, direct spark ignition control module for gas-fired furnaces, boilers and heating appliances. Models are available with or without a prepurge timer. The S87 controls the gas valve, monitors the main burner flame and generates a high voltage for spark ignition.
The S87B uses a single electrode for spark ignition and flame sensing. Use with any gas control designed for DSI application: V845, V854, VR845, VR854, VR8450, and VR8540.
* External, replaceable fuse protects system transformer and temperature controller
* Automatic system lockout after trial-for-ignition if malfunction exists or main burner flame fails to ignite
* Compact, solid state components for accurate, long-lasting performance
* Convenient remote start procedure; after safety shutdown, control module can be reset from the remperature controller
* Low voltage control circuit reduces wiring costs
* Uses flame rectification principle to prove presence of main burner flame; false flame signal resulting from short to ground results in safety shutdown
