Inline duct blower control

Old 05-27-19, 04:45 PM
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Inline duct blower control

I need more cooling to one bedroom. I'm installing a blower in the duct and I want it to turn on when the Heat Pump blower is on.
I have a relay that I would like to activate from the thermostat blower and common wires. When the relay would be activate, it's contacts would complete a separate 120VAC circuit to the inline blower.
Is it acceptable to splice into the thermostat wiring for this type of application?

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