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binky replied to the thread Room thermosat question.NO normally open, NC normally closed. Open means off, the timer then turns heating on when the timer switch or thermostat closes the... -
but make sure you turn the power off 1st
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If you have a read of 411.3.3 you will answer your own question. But here's a clue.. 411.3.3 is titled "Additional rules for...
