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madmark
05-28-2005, 08:22 AM
This may seem an odd question but what is the real difference between a pool heater and a standard boiler? The only things that really come to mind are cabinet design to withstand weather exposure and possibly heat exchanger design to account for contaminants like leaves and things that might get past the skimmer.The recovery rate must be the same: 100,000 btu in @ 81% eff. = 81,000 btu/hr.Am I oversimplifying? Any thoughts guys & gals?
t527ed
05-28-2005, 08:45 AM
would a standard boiler hold up to pool chemicals???
dan sw fl
05-28-2005, 11:47 AM
Most Pool Heaters should be heat pumps
... at least in my area.
madmark
05-28-2005, 12:20 PM
Cast iron? i would hope so. I'm more thinking along the lines of temperature rate - of - rise. dont want the kids getting scalded if in front of the return jet.Also concerned about recovery rate, so many gph x desired rise in temp... that sort of thing.
p.s. eff heat pumps...

[Edited by madmark on 05-28-2005 at 12:24 PM]
beenthere
05-28-2005, 04:00 PM
You can use a standard boiler, just need to use a brazed plate heat exchanger to protect the boiler.
sigma
05-29-2005, 02:02 AM
I think that today's pool heaters have copper - fin heat exchangers.
Boiler with cast-iron exchanger would take a biting due to condensation.
In this application primary and secondary loop probably
would not work.
Water flow has to be great enough to provide proper filtration.
Due to high GPM, TD is very small, so I would not wary about
anybody getting scaled. High temp limit is also lower then in regular
residential boiler. Pool heaters have a pressure switch to prove the
pump operation.
markwolf
05-29-2005, 02:10 AM
Originally posted by beenthere
You can use a standard boiler, just need to use a brazed plate heat exchanger to protect the boiler. I have used s.s.spiral heat exchangers with good success.
madmark
06-01-2005, 11:42 PM
ty to all, sigma was the closest. i picked up the heater today. 3 pass copper fin tube HE, proof switch for pump etc...
fishface
06-03-2005, 09:41 PM
When using a plate heat exchanger in conjuction with a boiler what are the pros and cons? The boss just told me we are doing a job like this in a few weeks and I was wondering if anyone could shed a little light on what I should be careful with? Thanks.
beenthere
06-04-2005, 05:31 AM
Originally posted by fishface
When using a plate heat exchanger in conjuction with a boiler what are the pros and cons? The boss just told me we are doing a job like this in a few weeks and I was wondering if anyone could shed a little light on what I should be careful with? Thanks.

Flow rate, flow rate, flow rate.