Replacing thermostat on H100id heater

Old 05-23-08, 04:19 PM
JackOfAll Hills's Avatar
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Cool Hayward Pool Heater Thermosatat Replacement

I need to replace the thermostat on my above ground hayward "H" series Induced Draft Pool Heater.
The existing thermo sprung a leak @ the point where the sensor probe inserts into the water return area.
I'm not sure how the new sensor is held in place at the heater water flow area. There are not any threads & it appears as if the probe is just stuck into the hole.
Do I use plumbers putty, or something of that type?
The water pressure leads me to believe seems it wouldn't hold. No directions came with the new thermo & I'm at a loss.
Any help "Please"
Old 05-24-08, 10:33 AM
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Originally Posted by stevie3x View Post
someone else allready mentioned be careful as to any wiring you touch as most of the wires are 28 vac but some are 120 or 240 vac depending on how your heater was connected , it only takes 1/2 of 1 amp to kill a person & there is at least 15 amps going to your heater. so do check & be careful.

The H100ID heaters will only run on 120 vac. Also be extra cautious as 120 vac runs through ALL of the electrical wiring of this particular heater.

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