About 4 years ago I had a LAARS MAX boiler installed with a Beckett burner and a Superstor water heater. All works well - except minor problem with burner needing to be reset occasionally. BUT when I called to have unit cleaned in Sept 2009, the tech wouldn't touch it. He showed me a letter from his firm's lawyer. This boiled is apparently not CSA approved (Canadian standards - ie safety). I called the company that installed it and they cleaned it (for a hefty price). What's the story? Where does this leave me with my insurance company? Repair and maintenance? Cleaning?

The gas control valve is passing . It will need a replacement.

You will need to remove your burner tray and clean the burners and make sure their are no rat nests. While you have it out clean the gas orfaces in the main pipe goeing to each burner.
You should probally tear down the top of the heater and clean the heat exchanger at the same time. When doing this don't use wire brush as the soot can explode with just a small spark. With the heater tray out you can use water abn a stiff brush to do this. Then let dry while you clean the burners and when you should be ready to go by the time your done but it would be best to wait a day for the heat wall to dry so you don't get popping when the heat hits it.
Good luck and don't forget to do this each year at the start of the heat season.

Hello
Yes,more then likely its moisture from the high effenicey system of the boiler.

I have a laars boiler at work and some mornings when its cold out it looks like there is a fire, which is really only steam.

As long as your not shutting down on low water failure or loosing pressure and holding temp.This is normal.

Hope this helps.

i would recommend getting a "superstor" tank,...(not messing with the amtrol again) is this run off of your boiler? if so, you'll like a "superstor", good luck, cracklin joe,........

hi. i have mini temp boiler 150 btu 5yers old . it is burning with know radiation .it is up to thempitio .but it will not shut off.flame is good radietor is hot ,help?

the hammer is due to boiling inside some one has been messing with the safety controls or water to slow or no flow at all

Time for a cleaning and gas pressure test.

problem is pump-must replace- there is a valve inside unit that holds pressure to about 150psi -it is leaking by when unit shuts down- causing problem. If left unrepaired you could blow chimeny connection with bad ignition. good luck