HydroStat 3200 Universal Temperature Limit, Boiler Reset and Low Water Cut-Off for Gas-Fired Boilers, 24 VAC

Used this to replace a Honeywell L7148 F 1042 aquastat that was build into my Dunkirk boiler. The Honeywell was discontinued and they offered no replacement. Not saying much for Honeywell! I was told by several heating contractors that converting to another unit was going to be difficult and expensive and I should just buy a new boiler. Looking at the maze of wiring in the boiler I was at first intimidated. After taking some time to puzzle out the wiring diagrams, I determined that this was not rocket science and converting to this unit was not that difficult. After temporarily wiring in the unit to be sure it was going to function, I purchased the appropriate Molex connectors so I did not have to cut off the connectors in my boiler, thus keeping most of the boiler's indicator lights working. The only light that is not functioning is the circulator pump one. I wish this unit's many indicator lights (most of which never light up) would have included one for the circulator pump. That is the only reason I did not give it a 5 star rating. A nice feature of this unit is that it hold the circulator pump off until the boiler reaches 125 degrees. My old one did not do this and when the unit failed and the burner did not come on properly, the pump ended up circulating cold water endlessly. Hope it lasts.

It lasted three weeks. I returned it.

Very nice unit the old one stop working after we re piped the heater correctly this one works wellBut we did see it $10 cheaper on the web with no taxes thanks very much.

I used this to replace my Honeywell hydro stat after I found out they discontinued it when it was less then ten years old . It works great only been a month so far but working none the less . I would have given it for stars but the wire to the sensor was really short as in like six inches from what I understand this would not be a problem in most replacements but on my boiler it means I needed to relocate the hydro stat to the other side and extend all the other wires to make it work . They do sell ones with longer cables but I didn’t know that when ordering . All and all it works and that’s all I can ask

I gave a 4 star because my unit did not have the powered damper jumper. Other wise everything is 5 stars. I recommend it.

Easy to install, simple to adjust, only in operation for 1 month.

Easy installation, good instructions, and has energy saving functions.