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Posted by Harold hydronicnetwork.net on January 15, 2004 at 08:00:37:
In Reply to: oil control relay posted by George on January 15, 2004 at 07:44:44:
You replace the relay with the same model that is on the unit.
The relay is controlled by the thermostat on TT and the cad cell on FF.
It is BIG dollars.
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