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Kromschroeder catalog
Honeywell catalog

Honeywell ST7800A1120/U prepurge timer module 15 min

Brand: Honeywell
SKU: ST7800A1120/U
Quantity:
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PRICE ON REQUEST
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Honeywell ST7800A 1120 timer card ensures synchronized pre-purge operations for the 7800 series relay modules.

  • Prepurge timing: 15 min

Honeywell ST7800 A 1120 plug-in purge timer installing:

Disconnect power supply before installing Purge timer to prevent electrical shock or equipment damage.

  • Remove the Keyboard Display Module, Dust Cover, data controlbus module or Remote Reset Module.
  • Remove the current ST7800A1120 (if installed) from the 7800 SERIES Relay Module by pulling upward on the plastic support cover.
  • Make sure that the new ST7800A 1120 selected has the desired timing period.
  • Properly orient the plug-in purge timer with the opening in the Relay Module, and insert the Purge Card into the opening of the Relay Module compartment.
  • Reinstall the Keyboard Display Module, Dust Cover, data controlbus module or Remote Reset Module onto the 7800 Series Relay Module and restore power to the device. Run the burner system through at least one complete cycle to be sure that the system is operating as desired.


Replacing a Honeywell ST 7800 A 1120/U prepurge timer is a good solution to make your equipment work again. We offer a wide range of Honeywell spare parts for burners, gas trains etc. We supply original Elster (Kromschröder) & Honeywell (Maxon) products.

If you have any queries about Honeywell control devices or any other Honeywell spare parts, please write us at 624burner@gmail.com, quoting the item code ST7800A1120/U.

  • Commodity code 85389099
  • Country of origin MX
  • EAN code 5023220803539