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09-30-06, 08:53 AM
Replies: 2
Views: 1,575
Posted By ellroy

What does the 'A' wire on my old Robert Shaw thermostat do?

I am replacing my old Robert Shaw thermostat (model: D34020) with a new Honeywell thermostat (RTH7400). The Honeywell installation manual doesn't mention a wired connection labeled 'A', and the...
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