Where do I drill the 3/8-in hole for the water sensor?

[malimited]

Brand new build. I'm responsible for hooking up the automation, but I'm a little confused as to the best location. Help!

 

[Rocket J Squirrel]

In the top of the horizontal section of pipe between the pump and the filter.

 

[malimited]

Where I marked it red? If so, does it matter if it's right in the middle closer to the pump or closer to the filter?

 

[ChrisABS]

You want it anywhere after the filter so clean water is passing through, but not after the heater otherwise it will give you a wrong temperature reading.

 

[ajw22]

After filter. Green dot is best or yellow dot is also good.

 

[malimited]

Sorry, but I'm super confused now because Rocket Squirrel said between pump and filter, but ajw22 says between pump and heater?!?

 

[ajw22]

Sorry, but I'm super confused now because Rocket Squirrel said between pump and filter, but ajw22 says between pump and heater?!?

Between the filter and heater. After the filter so that no debris coming through the pump damages the sensor.

 

[generessler]

Un-pro tip: Don't use a drill (like a brad point) that can create a little 3/8" disk as you punch through at the end. Since you are past the filter, this can cause mischief with valves, return eyeballs, etc. Don't ask me how I know. Best is to remove the pipe completely at the unions - which looks possible in the pics - and flush clean before re-installing.

 

[malimited]

Un-pro tip: Don't use a drill (like a brad point) that can create a little 3/8" disk as you punch through at the end. Since you are past the filter, this can cause mischief with valves, return eyeballs, etc. Don't ask me how I know. Best is to remove the pipe completely at the unions - which looks possible in the pics - and flush clean before re-installing.

I don't understand what you mean. Are you saying remove the entire pipe section from the unions, drill a hole, and make sure there's no PVC debris inside the pipe and then reassemble?

 

[generessler]

I don't understand what you mean. Are you saying remove the entire pipe section from the unions, drill a hole, and make sure there's no PVC debris inside the pipe and then reassemble?

Yeah if there is any concern that drill debris can cause problems downstream. Probably overkill, but undoing/redoing a couple of unions should be 2 minutes. The main thing is to use a drill bit that doesn't punch out a disk as it breaks through.

 

[ChrisABS]

I use a paddle bit that seems to help bring the debris up as I am drilling.

 

[ajw22]

3/8" Brad Point Bit - bad



3/8" Paddle bit - good

 

[malimited]

Yeah if there is any concern that drill debris can cause problems downstream. Probably overkill, but undoing/redoing a couple of unions should be 2 minutes. The main thing is to use a drill bit that doesn't punch out a disk as it breaks through.

Ok, so I disconnected the unions, drilled the 3/8" hole and removed all debris before reconnecting...I hope this is the right spot.

 

[wireform]

Yes that's perfect.