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Winterize minimax heater

How to winterize minimax heater

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Lost the manual to my heater. Would like to know how to
winterize the heater. mini max ch 250 M

bl.wilson @ hotmail.com .. thank you, hope you can help me.

Posted on Sep 05, 2011

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Posted on Jan 02, 2017

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How do i install an igniter in minimax


Pentair 472604 Igniter Replacement MiniMax NT STD Pool and Spa Heater

The ignitor is simple to replace, It is either a spark ignitor or a Hot surface ignitor. The above link will take you to a picture of the Hot surface ignitor, it is normal held onto the bottom of the burner tray, at right about the middle, by 1 or 2 sheet metal screws.

If a Spark style ignitor/electrode, then the bottom link is the one want to look at. Again, held in place the same way as above description.

Pentair 471090 Ignitor Electrode Replacement MiniMax 75 100 Pool and Spa...

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Check the Thermal Reg in the header and also make sure you have adequate water flow thru the heater, make sure your filters are clean and there are no external by-pass valves open.
If you remove the Thermal Reg in the header and the heaters seems to run fine the replace with a new one.

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There's water leaking from side of heater


this is 100% broken heat exchanger its the coils inside of heater that heats the water this usually happines from really old age or because your climate temperature is below freezing and broke the coils, i see it all the time in winter season, best way to prevent this is to run your heater for fifteen minutes every month and make sure pool equipment runs all day everyday when its really cold out you can start running system normaly after your outside temp is warmer. its better to get a new heater when this happines heat exchanger is hard to install for most tech's pretty much have to take whole top part of heater off and is also expensive part

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Looking for owners manuel for a minimax n7 the heat wont turn on


This will get you to their site www.pentairpools.com
You will find many things there just brouse through till you find your heater. Good luck.

Jan 22, 2010 | Pentair MINIMAX NT TSI IGNITER

1 Answer

Drain Plug broke in half and is stuck


If you can not get the pice still in the header out, loosen the flanges that hold the inlet and outlet pipes enough for water to drain and then tilt the unit so the water inlet/outlet side is lower than the other side. You may want to place a block of wood under the edge to kep it this way for the winter. Be sure to also remove the pressure switch to allow that tube to drain as well.

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1 Answer

Need to reignite the heater and the instructions on the panel are paritially destroyed. it is a minimax plus 250 and have tried finding the instructions on line


For an Owner's Manual for the MiniMax Plus heaters, which does contain start up proceedures for the electric and millivolt models, you can follow the link below.

http://www.inyopools.com/owners_manual/pentair_heater_minimax_plus.pdf

Make sure that you follow the directions for your particular model of heater.

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2 Answers

Minimax pool heater cuts out at 91 degrees when remotely set for


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