Question about Jacuzzi RapidHeat In-Line Heater U395000 [ Bathtubs and Whirlpools,
I'm in the process of installing a Jacuzzi Rapid Heat inline heater on my whirlpool bathtub. Unfortunately, it does not fit normally on the suction line due to a jet just above it. Can the heater be installed upside down? Also, are these heaters directional spacific as to which end is the water input and output?
You do not want to install any heater upside down because if any debris gets inside the heater pressure switch while it is running it will NOT shut off once the pump shuts off.
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Posted on Feb 19, 2013
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Posted on Jan 02, 2017
SOURCE: Rapid Heater for Jacuzzi
The light is supposed to be on when the tub is full of water and the pump comes on. Make sure the heater is plugged into a seperate breaker, it cannot be on the same line as the pump.
Look on the heater for a label. If your heater is installed on the discharge side of the pump it should say "pressure heater" on it. If it is installed in front of the pump it should say "Vacuum Heater" on it.
Once installed, fill the tub with water and turn the pump on. If it is installed in the correct position the light will come on when the pump turns on.
Posted on Feb 24, 2009
SOURCE: Need to heat water up more
I had same problem... fixed by turning hot water tank up to 145 degrees...but PLEASE do not do this if you have young children..that is hot and will burn!.. but does work(did this 8 years ago!)
Posted on Mar 16, 2009
when you changed the heater did you make sure you also changed out the temp sensor cause most of the time calciun builds up an is the reason for both the heater an sensor to fail calcium is ok at temps above 93.6 degrees but as soon as the temp drops below this point it will come out of solution an start to harden on the element an sensor.Always make sure to that you are getting power from the spa pack to the heater check for voltage at the main leads on the heater just because it says its on does not always mean you are getting power to the heater.Always remember with spas the problem lies where the power dies.sometimes it can even be your main top side controls they can go bad an indicate the heat is on but will not relay that to the heater.make sure you got the correct kilowatt heater also an that you have the correct one in terms of 240v or 110v also from the thousands of heaters i have replaced in spas over the years i always check to see if i am getting the correct omhs reading before i install them should be around 8-10 for a 110 an 12-13 for a 240
Posted on Mar 27, 2010
SOURCE: I have a new Jacuzzi
The bath heater you have is not designed to HEAT water - they only Maintain what you start with.
You need to start the bathtub with the hot water you want. It will only heat about 1-2 degrees an hour.
Posted on Jan 12, 2011
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