Where does this vacuum line go?

[434nova]

I found a loose vacuum line. It has suction on it. Don’t know where it goes.

 

[Nicholas Maiers]

Looks like it’s for the heater


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[whitehot1]

Yep goes to the heater control valve.

 

[JayC]

What they said.....

 

[434nova]

I found it off the heater valve. Thanks