High Limit Switch used in many gas & electric heaters. Common on some Hurlcon & Astralpool heaters. Failed hi limits cause the F2 Errors found on Hurlcon and Astral Gas Heaters. AKA Thermal Cutout
Used on Outlet for some early Hurlcon & Purex Minimax heaters. Never used in any plastic headers. Automatic Reset. On early Hurlcon HX heaters, the high limit switch had a blue plastic body secured with 2x philips head screws onto a small copper plate brazed onto the heat exchanger outlet elbow. Some newer ones are threaded.
Important Information:
– These are an Extremely Important Safety feature found on heaters. They must be replaced when necessary.
– When installing, make sure both male & female thread are clean. We recommend lightly lubricating the thread, and *gently* screwing them in, as the thread shaft is thin brass. Dirty threads, or over-tightening can break the shaft.
May also be found on JX 130 and JX 160 gas heaters.
Hurlcon Part Number 71032 – Threaded / 71018H – Non Threaded
Purex Pentair Part Number 071017
Other High Limit (Hi Limit) Switches:
42-45C° Inlet Hi Limit (Hurlcon, Astralpool, Raypak, Pentair)
52-55C° Outlet Hi Limit (Hurlcon, Astralpool, Raypak, Pentair)
60C° Outlet Hi Limit AGS (Hurlcon, Astralpool, Raypak, Pentair)
70C° Outlet Hi Limit (Hurlcon, Astralpool)
175C° Flue Temp Sensor (Hurlcon, Astralpool)
Hurlcon / Astralpool HiLimit Locator Brass Threaded Plug
| Type | Threaded – 70°C Hi Limit – Hurlcon Astralpool, Non-Threaded – 70°C Hi Limit |
|---|
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Returns
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Our policy is for 30 days. If the 30 days have elapsed since you purchased your item, we will not be able to provide a refund or exchange.
You are able to return an item when it's unopened and in the same condition as when you first received it. You must have the item in the original packaging.
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