Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
If our community has helped you, please consider making a contribution to support this website. Thanks!

Question about Slant/Fin Sentinel hydrostat

Options
Jersey2
Jersey2 Member Posts: 173
in Gas Heating

I am thinking of purchasing a back up hydrostat for my Sentinel SE-140 boiler before prices go up. I looked up the part number- Hydrostat 46-1021-000. When I searched the web it says that this hydrostat is no longer made, there is one web site that has it but are asking a high price. Is there an equivalent hydrostat that replaces it?

I did see a hydrostat for the Sentinel SE-70, part number 46-1022-000 that looks exactly like the 46-1021-000 but without the onboard transformer, and has an extra wire harness. There are a lot of these on the web priced very reasonable. Could that hydrostat be used by adding a transformer? Below are what the two look like. What is the onboard transformer used for?

Hy1021.jpg Hy1022.jpg
I'm not a plumber or hvac man and my thoughts in comments are purely for conversation.

Categories