purchased the standard sized 3/4 NPT option. Not a plumber but the existing one "looked" bigger than 1/2 " LOL. closed off the boiler while it was a little warmer outside and the boiler was idle, doped up the threads on the new well and unscrewed the old well. Installed the new well without any more than a pint of water escaping and installed the new 3200+ fuel smart Hydrostat. Been working ever since with hydrostat set on 2 zones. Staying warm and saving fuel!
Sam
Ohio
1 years ago
Verified Buyer
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The Standard Electro-Well for Retrofit
Use for a Hydrolevel 3250-Plus Aquastat Upgrade.
Makes a nice performance package.
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