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Need to set low limit with a Honeywell L8148A

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Posted by DP on October 13, 2009 at 20:45:21:

I use an outdoor boiler for winter heat and my oil burner as a backup. I want to set a low temp limit in case the OWB goes out for some reason. My current aquastat only has a high limit. The way my system is set up, I use a 60 plate exchanger to heat the water in the oil burner and it maintains temperature all the time. It was recommended that I buy a strap on aquastat and use that to interrupt the burner only. I was just studying the L8148A and the new aquastat and I'm stumped. I'm going to have someone look at it, but I'm wondering if this was the right way to go or if there was a better way to do this. Basically if the OWB goes out and the water temp in the block goes below 110 I want the oil burner to kick on if any of my zones call for heat.

Thanks!

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Re: Need to set low limit with a Honeywell L8148A HeatPro 21:53:17 10/13/2009 (0)

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: I use an outdoor boiler for winter heat and my oil burner as a backup. I want to set a low temp limit in case the OWB goes out for some reason. My current aquastat only has a high limit. The way my system is set up, I use a 60 plate exchanger to heat the water in the oil burner and it maintains temperature all the time. It was recommended that I buy a strap on aquastat and use that to interrupt the burner only. I was just studying the L8148A and the new aquastat and I'm stumped. I'm going to have someone look at it, but I'm wondering if this was the right way to go or if there was a better way to do this. Basically if the OWB goes out and the water temp in the block goes below 110 I want the oil burner to kick on if any of my zones call for heat. : Thanks!

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