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Re: FST Timer..
The older FST uses triacs and you WILL need an interface relay. Older Questar used triacs too.
The newer versions use a dry contact relay so no outboard relay is nesessary.
If you have the older FST with triac and not dry contact relay, you WILL need my diagram.
Suncapsule timer contact is DC. DC does not work with triacs. That is why the interface is nesessary.
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