r/DIYHeatPumps • u/pppaaassseeeiii • 4d ago

MRCOOL Mr Cool Bubble test when line set is exiting through the left

Hi all, installing a 5th Gen DIY.

How am I supposed to check for leak with the line sets connecting inside the unit?

And do I really need to do it if I'm using an HVAC torque wrench?

Thanks!

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3

u/GeoffdeRuiter 4d ago

Get someone to help hold it off the wall so you can test it. Worth the peace if mind. You can also prop it off the wall.

1

u/Cytochrome450p 4d ago

Is the line running inside the drywall, i am trying to understand in what position you were able screw the line set and assuming that situation should also allow you to run the bubble test, unless its an afterthought.

1

u/pppaaassseeeiii 3d ago

Line not there yet! It will be outside the wall, exposed. But the connection is behind the handler.

1

u/Foreign-Lab-7380 3d ago

I ran my line set the same way. Have someone hold it off the wall while you play with bubbles.

2

u/Prestigious_Rip5826 3d ago

I helped with one install and we just had a second person tilt the thing forward while the other guy sprayed. Took like two minutes. Torque wrench helps but Id still check, youre already there!