Hello,
I have a 1994 Hotspot Model Z. It is the round one with 5 jets where the heater sits on top of the pump. I did some trading for this and just hooked it up yesterday. One coupling where the pump is attached to the heater has some initial threads broke off. I was still able to screw it down tight. There is a ridge on the pump side where it almost looks like a gasket/washer/O ring? might go. As of right now just PVC hooked to the metal heater. None of my PVC coupling/joints have any gaskets/washers/O rings on them. Well, it was a gusher of a leak especially on the right side where pump meets heater. So my questions are: Even though I got a tight seal is the fact that some threads are broke off prevent the coupling to go flat against the heater housing. Am I supposed to have some kind of gasket/washer/O ring where all the PVC joints come together? Silicone or plumbers tape? Make my own? My Hotspot dealer is 50 miles from me but then again, I only want to have to do this once. Obviously, this is my first go round in the world of spas. Thanks.