settings for Honeywell 8124 aquastat

I have a Honeywell 8124 aquastat with an oil fired Burnham boiler and Beckett burner all 6 years old. Live on Long Island, boiler used for heat and hot water (goes to a storage tank). I just happened to look at the aquastat and found the hi at 165, lo at 160 and diff at 0.
I thought there was supposed to be a 20 degree separation between hi and lo
I remember my service guy for my old system told me 180-160 in winter and 140-120 in summer (for hot water only)
What should my summer/winter settings for hi, lo and DIFF be for this aquastat?? I took a gander and set it to 170-150 with 15 diff.
Your input is greatly appreciated! Thanks and happy New Year Matt
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The boiler is a Burnham V7 series

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What ever happened to... "If it isn't broke, don't fix it."? ;-)
-zero

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wrote:

I is not broke, but with such a narrow setting (5 degree separation) the boiler was running almost continuously. Great for the oil company. I'm looking to optimize the performance of the system already operating at 83% efficiency...especially at todays oil prices. Matt
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Generally, knowing the type of radiation you are using in your home would be a wonderful bit of info to have to select the temp you would need.................but Id go with 260 and 240. :-) Bubba
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I'd go with 180/160.

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Thanks for the follow up posts. As per request I have a baseboard hot water heating system. two zones controlled with setback electronic thermostats. As for the 260-240, I would presume that will literally make my boiler 'blow off steam" as well as make extremely hot water...but I am not an HVAC specialist. That's why I posted here. I put it at 180-160. The question still remains where to set the differential. It ranges from 10-25 degrees. I would be better able to decide if I KNEW what the function of the diff control is and how it works. Thanks again for your posts. Matthew

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Hi Matt,
here is a link to your aquastat http://customer.honeywell.com/honeywell/ProductInfo.aspx/L8124A1015
this unit has a low limit for preventing your circulator from running when the boiler is colder than the low limit setting.
The differential controls how much cooler than the high limit setting it will allow before turning on the burner.
In any case, please read it for yourself and you can ignore my description, as I am only a home moaner also living on Long Island paying $3.08/gallon and going up.
But I frequently stay at Holiday Inn Express's, so It gives me temporary smartness and abilties. I am, as my nickname says, a Dimwit, and don't let anybody tell you elsewise.
Bubba is one of the senior tradesmen here, so his recommendation may be the correct one. He is usually right on the money :-)
Bob
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Thanks so much for the link. After reading the literature ("settings and checkout") I have a better understanding of the low limit differential. BUT, I am still unclear as to what effects the different set points of the variable diff (10-25 deg) have between the burner and circulators and what effects it would have on my heating system. A question for Bubba or one of the other senior tradesman ?? Thanks again... Matt
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Matt,
yes, I am not in the trade. I am in the automation controls line for the company I work for, but when it comes to HVAC, I only want to ty to understand things, but leave the work to the pros in this trade. there is a lot to know about lots of stuff here.
I have respect for these guys who work hard and know their stuff.
Besides, at my age I am tired of getting filthy and working on machinery in very awkward positions. I happily pay others to work on my HVAC equipment.
Bob
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DIMwit posted for all of us...

--
Tekkie Don\'t bother to thank me, I do this as a public service.

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DIMwit posted for all of us...

--
Tekkie Don\'t bother to thank me, I do this as a public service.

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getting there; I'm 65. still need it and remember what to do, but........
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Dr. Hardcrab posted for all of us...

--
Tekkie Don\'t bother to thank me, I do this as a public service.

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Wow, off the beaten path a bit?/ (no PUN intended!) I have set my boiler to 180/160 with low diff at 10. SEEMS to be fine, but I am still curious as to what difference setting the low diff at 15, 20, or 25 degrees would do...

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