File 112491_0_000

• Control ignition sequence and gas control operation Generate high voltage potential for main burner ignition Lockout after one trial for ignition if main burner fails to ignite Reset from thermostat after lockout Use modules (except S87C) with any combination gas control designed for direct spark applications and rated 2 A or less Two rod flame sense Internal high voltage spark generator 4 sec lockout timing 4 sec Ignition trial time 30 sec purge 0.8 sec max flame failure response time

The S87K 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.