Honeywell Aquastat ( L8124A,C,E,L and M )

On my Keystoker KA6 is the Honeywell Aquastat listed in the Subject Line, There is a high limit and a low limit on it ( 2 dial guages ) Keystoker wants them 20 deg apart ( example High 170 & Low 150 ) which is where mine is set as of today , I had them at 130 & 150 . I noticed that there is something only for the Low side called a ( low limit differential ) with settings from it looks like 0 - 25 , what is this for I think mine is on " 0 " could someone help me with this. I am wondering what this does cause at night it seems the house will drop a couple deg's and then i will get those back through out the day is this normal , please refer to the thread ( fire in coal box ) to see a picture of my fire etc.. and here is a pic of the aquastat as well to help . Thanks everyone

Love in Christ Jesus

Jay





Notice the Black knob is differebential
Red knob on left is High Limit
Red Knob on right is Low Limit

I always keep my two settings 20 or more degrees apart. Winter time is 180 high and 160 low, summer time is 180 high and 140 low. That 20 degree difference on the low side makes a big difference. In the summer the basement stays noticeably cooler when the boiler is at 140 and in the winter the baseboard or in your case radiators will give of a lot more heat at 160 and above than at 140.

Just curious. What is the green TACO box shown in the picture directly above the on/off switch and fuse holder. I see it says something on there but I can't quite read it. I don't have one on mine. This is something new or just specific to certain installations I guess.

gaw wrote:What is the green TACO box shown in the picture directly above the on/off switch and fuse holder.

Low water cutoff.

Coaledsweat is correct it is a low water cutoff switch , I cant get my water to get above 140 deg is my fire to small you think ??

Hi Jay,
Yes I believe your fire is too small, since you turned back the feed by a turn, you cut back on the fuel to the fire. I'd turn the feed back to where it was or maybe an addtional turn to increase the heat output from the fire [increase the fire size].

Unless your boiler is too small for the btu load from your house at these cold temperatures, you should be able to raise the water temperature to 160*.

Greg

If the flow valve doesnt fix the heat issue , I guess I will try that next . Thanks for all your input , I would be lost with out all of your help !!

Love in Christ Jesus

Jay Williams

Flow valve??

GL

Yes it is a B & G Flow valve that was set to gravity flow or feed, this may been where all my heat was going from the boiler ?? at least that is kinda how I understand it , check with gaw and he can do a lot better job explaining !!