Replacement Heater Question

[RDN]

My old Teledyne-Laars Heater finally died - it's like 35 years old.

So I'm going with a new Raypak Heater.

I have two options - a regular Copper Fin Tube heat exchanger with Polymer (read: Plastic) headers, and a Cupro-Nickel Fin Tube heat exchanger with Cast Iron Headers.

My pool is currently running about 6% Free Chlorine, for what it's worth. I keep the ph at ~7.5.

Thoughts? The standard Copper Fin version is far cheaper, obviously.

Ron

 

[mknauss]

No reason to spend the extra. As long as you manage your pool water to TFP levels, no issues.

 

[jblizzle]

Agreed. The cupro just adds some extra resistance if you let your pH get way too low for too long.

 

[RDN]

Thanks folks!

I'll go with the standard Copper Fin version then.

I do find it strange that Raypak wants the user to run Free Chlorine at/below 3.0. I know that has been discussed here before, with the conclusion that the CYA ties up some of the actual Chlorine, so my running 6.0 FC with 40 or so CYA is just fine.

 

[jblizzle]

Most everyone in the pool industry still clings to the decades old recommendations without apparently looking at the actual chemistry.

Following the TFP recommended levels, you should not have any chemical issues with your heater.