780-910 Robertshaw Universal Hot Surface Ignition Module
The 780-910 Universal Hot Surface Ignition Module Uni-Kit is designed for use on gas fired systems. It is equipped with a self diagnostic green LED for quick troubleshooting. The LED indicates if the system is in normal operation, has gone into lockout, has a weak flame signal, or has an internal error (a defective module).
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780-783 Robertshaw Hot Surface Ignition Module
Factory model HS780-34PL-308A. Replaces Rheem part # 62-22578-01
The 780 Series hot surface ignition modules are designed for use on gas fired heating systems. The system acts on a demand for heat by a switch or thermostat to supply power to the ignition control. This model has the prepurge option, there is a time delay equal to the heat up time selected before the ignitor is energized. At the end of the ignitor heat up time the gas valve is opened supplying gas to the main burner. After several seconds, the ignitor is turned off and the sensor is energized.
The 780 Series provides lockout and complete gas shutoff if ignition is not proven after the trial for ignition sequences has been completed.
780-845 Universal Intermittent Pilot Lockout Ignition module Sp845
The 780-845 lockout ignition control provides 90 seconds of spark, followed by a 6 minute time delay (purge) between ignition attempts. After three tries, if no pilot flame is sensed, the control goes into a one-hour lockout period. At the end of the lock out period, if the demand for heat is still present, the unit will repeat the three tries for ignition.
780-502 Robertshaw Direct Spark Ignition Module
DS845-NL-1-4. The 24 VAC DS845 Direct Ignition Control is applicable to commercial cooking equipment, gas fired heating and water heating systems of many types. The system acts on a demand for heat by a switch or thermostat to open the gas valve. At the same time the DS845 ignition control supplies a spark to the electrode which ignites the gas. After the gas is lit, an electronic circuit proves the presence of flame using flame rectification. When the thermostat is satisfied, the gas valve will be closed to shut off main burner gas.
Robertshaw Part No. DS845-NL-1-4
Replaces: 100-00832-02 100-00832-11 100-00832-13 100-00832-22 100-832-02 100-832-11 100-832-13 100-832-22