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Help with Boiler issues. Continuous full cycles.
I moved into a house that has a Weil McLain CG Boiler and Amtrol 41 Gallon Boiler mate. It also has a Central Boiler E Classic OWB. E Classic is off. All Heat in the house is definitely off. Only need for boiler is hot water. When I moved in boiler was not working because of a fried rollout switch, so there was no hot water, noticed previous owner had amtrol dial set to maximum. Bypassed the switch for a couple days, till I got a new switch in, hoped my troubles were over. I moved the dial to 120* indicator. Hot water was very smelly, house was a little neglected from the previous owners. So couple of weeks ago I drained and flushed the amtrol. Hot water not smelly any more. But seems as though the boiler does a full cycle continuously. Boiler aquastat seems to doing its job. It is set to 170, boiler starts at about 130 or so and goes to 170 then shuts off. Then cools to 130 or so and turns back on. Not matter what I set the amtrol dial to the water is as hot as the boiler. PO left a new replacement 90-340 relay that I put in and no change.
Ideas? Is there a way to isolate the boiler from the amtrol? Trying to determine where the problem is. I ordered another 90-340 relay incase the one left in the house was also bad. Comes in on monday. If I could just simply disconnect the amtrol from the boiler and see if the boiler still is running I know it is the boiler. If it settles down, then I know it is the amtrol.
The Amtrol gets hot to the touch with having 150* water in it. So I probably need a new one anyway, Local quote for install of a HTP SS Ultra is $3700. I can't afford that right now so trying to troubleshoot my problems.
Thanks for any help you can give!