Jandy JXI400N - Trouble Air
- Thread starter PoolGate
- Start date
- May 23, 2015
- 24,403
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Honestly, is a PRV really needed? Seems kind of dumb to me ... I suppose if Code requires it then you have to have one but it would have to be a seriously jacked-up heater to need one of those ...
If the heater can be totally isolated with valves, then it can explode if it runs with no flow.
If the heater cannot be totally isolated, then it should never be able to get to an unsafe pressure.
If the heater cannot be totally isolated, then it should never be able to get to an unsafe pressure.
This can be completely isolated.
This is one reason to use a check valve at the outlet instead of a regular valve.
With a check valve at the outlet, pressure can get out but not in.
Also, the tab feeder will destroy the heat exchanger if the pump is off while there are tabs in the feeder.
This is one reason to use a check valve at the outlet instead of a regular valve.
With a check valve at the outlet, pressure can get out but not in.
Also, the tab feeder will destroy the heat exchanger if the pump is off while there are tabs in the feeder.
- May 23, 2015
- 24,403
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I think this falls under the "seriously jacked up" provision as it would require the failure and/or defeat of several different safety interlocks ... but, then again, saving people from the fate of Darwin's Law seems to be what everyone wants ...
As shown below, the explosion can be quite dramatic.
Liability is a race between the dumbest human beings and the smartest engineers. - James W.
- Jun 7, 2017
- 9,050
- Pool Size
- 29000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
I think in my installation it does nothing at all. No pressure would ever build since I don't have a valve between the heater and the water to shut all flow. Jandy recommends it in those scenarios.
My inclination is to plug the hole.
PRV's are a 50/50 in the field. And when they are used, it is connected with galvanized pipe always. Out of the PRV people do use PVC. These PRV's usually rust out before they are ever put into play.
The Pentair and Jandy kits come with brass fittings, which is a better choice than galvanized.
Honestly, it's not worth the price. I have never seen all brass fittings like that in the field ever.
It's also important to make sure that the pressure rating is not higher than 50 psi.
- Oct 25, 2015
- 5,144
- Pool Size
- 25000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
- Jun 7, 2017
- 9,050
- Pool Size
- 29000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
I'll get a 3/8" plug and be done with it. I see no reason to let this thing keep introducing rust into the pool for 0 benefit.
Get a brass plug.
Also acceptable: gold, silver, platinum, titanium, tungsten, ruthenium, rhodium, palladium, osmium, iridium, 316 stainless steel, nickel, vanadium and chromium.
Do NOT use: Mercury, calcium, lithium, potassium, sodium, magnesium or zinc,
- May 23, 2015
- 24,403
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I would use a Bismuth-Indium casting alloy that melts at 117F ... that way if the header gets too hot, the plug can melt away safely!
McMaster-Carr
McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.
A simple but effective temperature relief. Clever.I would use a Bismuth-Indium casting alloy that melts at 117F ... that way if the header gets too hot, the plug can melt away safely!
McMaster-Carr
McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.www.mcmaster.com
If you have any Pepto Bismol, you can get the bismuth out if you want to make your own alloy.
Also, note that while it might work in Maryland, it would not work in Arizona where it rarely gets below 117 degrees Fahrenheit.
Anything below 100 degrees in Arizona triggers a freeze warning.
Last edited:
- May 23, 2015
- 24,403
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Sweater weather really … but we still wear flip-flops and sandals. Sandals are considered “business casual” here …
- Jun 7, 2017
- 9,050
- Pool Size
- 29000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
Just a little epilogue here. I fired up the heater for its first long-term run this morning for this afternoon swimming. Started at 86 degrees at around 8am and cranked it to 92 which it got to around noon. Ambient temps were 70s (overcast) and low 80s (84 now). Seems to be working fantastically!
I still need to install the Jandy bypass kit.
I still need to install the Jandy bypass kit.
Good job getting it fixed.
Hopefully, it will give you many years of good service.
Hopefully, it will give you many years of good service.