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Yes, but only temporarily as means of troubleshooting the machine. They have contacts that are open or closed just like other flow proving devices.

Makes sense to me. Thanks for clearing that up. Freezing is not much of an issue down here in Floriduuuh!

I guess it's possible. What's strange is that the 1/2" NPT pipe plugs were removed in the evaporator waterbox opposite the entering and leaving side. They were laying in the control panel with the...

They are factory installed on all CGAMs, but I just set two brand new RTAC250 chillers in place yesterday and they had no IFM...

Just replaced an old D.P. on a Carrier 19EX with IFM.

The only bad thing about them is that you won't get service calls for flow switch or D.P. related issues anymore. They're great and I try to put one in every chance I get.