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BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22102
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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Trying to locate connections points water drain

Customer Question

Trying to locate connections points for overflow water drain pan float level shut off. Two yellow leads, exam thermostat and could not two yellow leads that the switch should be connected to. The switch functions OK but nothing shuts off when pan is full of water.
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.
hello,

is the switch currently not hooked up?
Customer: replied 1 year ago.

yes

Expert:  BillyHvac replied 1 year ago.
we just want to interrupt power to thermostat..so we run the red wire from R in the unit to one yellow wire...and then the other yellow wire attaches to red wire going to thermostat.

So wire starts from R terminal.....goes to yellow wire on switch....leaves other yellow wire...goes to thermostat on R in the thermostat