Aquastat

 
Randyman
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Post by Randyman » Sun. Mar. 17, 2019 4:50 pm

Anyone know why my aquastat wont turn on the stoker unless i put a jumper wire across the bottom slot in the thermostat sorry im a newbie but pretty sure its wired right thanks Randy
15528559382731053991391.jpg
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nepacoal
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Post by nepacoal » Sun. Mar. 17, 2019 6:29 pm

I don't have an answer but I'm curious what model that triple aquastat is. Is it an l8124a or c? And what made you add that jumper while troubleshooting. Did you read that somewhere?

 
Randyman
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Post by Randyman » Sun. Mar. 17, 2019 7:52 pm

Its a 1824a that was on my old oil burner I think it worked when I disconnected it. as for the jumper the slot says jumper so I tried it and it turned on, It might bypass the thermostats I"m not sure I guess ill have to buy another aquastat and try it

 
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nepacoal
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Post by nepacoal » Sun. Mar. 17, 2019 8:01 pm

If I'm reading the schematic on page 7 right, that jumper is bypassing the high limit control and supplying 110v directly to B1. There might be an issue with the aquastat. Hopefully someone with a deeper knowledge of this unit will chime in.

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73424_PROD_FILE.pdf
.PDF | 691.9KB | 73424_PROD_FILE.pdf

 
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coaledsweat
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Post by coaledsweat » Sun. Mar. 17, 2019 8:21 pm

Does the stoker shut down when it reaches the high limit setpoint?

 
Randyman
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Post by Randyman » Sun. Mar. 17, 2019 8:26 pm

it doesn't start at all I'm just hooking it up haven't got it running yet there is no power to the terminals b1 or b2

 
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StokerDon
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Post by StokerDon » Sun. Mar. 17, 2019 9:08 pm

So, this is a new install?
Does the boiler have water in it? If so, is the the water temp below the LO setting? Does the system have a low water cut out? Any other controls wired in that we should know about?

-Don


 
Randyman
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Post by Randyman » Mon. Mar. 18, 2019 8:32 am

Yes new install old aquastat there is a low temp 6006 but its bypassed

 
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CoalisCoolxWarm
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Post by CoalisCoolxWarm » Mon. Mar. 18, 2019 11:57 am

I have that same aquastat. Here is my wiring info.
L8124a_Wiring_screenshot.png
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Keystoker KA6 wiring Page 1.pdf
.PDF | 4.7MB | Keystoker KA6 wiring Page 1.pdf
Keystoker KA6 wiring Page 2.pdf
.PDF | 5.4MB | Keystoker KA6 wiring Page 2.pdf
Triple Aquastat -Circulator Closeup.png
.PNG | 608.1KB | Triple Aquastat -Circulator Closeup.png
My pics don't show much near that jumper, but it looks like there might be one in there. I'll go check it.

Edit: Nope, no jumper.
TripleAquastatJumper.jpg
.JPG | 557KB | TripleAquastatJumper.jpg

 
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StokerDon
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Post by StokerDon » Mon. Mar. 18, 2019 6:54 pm

Randyman wrote:
Mon. Mar. 18, 2019 8:32 am
Yes new install old aquastat there is a low temp 6006 but its bypassed
The stoker is not going to just run, the controls make it run under certin conditions.
Does the boiler have water in it? If so, is the the water temp below the LO setting?
Does the system have a low water cut out?


-Don

 
Randyman
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Post by Randyman » Tue. Mar. 19, 2019 11:02 am

Boilers full, waters cold, no low water cut off ,thermostats calling for heat, circulator pump relay kicks on , but no power to the stoker I have a new aquastat coming today will see if that fixes it

 
Randyman
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Post by Randyman » Tue. Mar. 19, 2019 11:04 am

Thanks for all the wiring diagrams seems like everyones a little different I just went by the efm installation manual

 
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Post by Phil May » Tue. Mar. 19, 2019 11:36 am

Sounds like the burner relay is smoked. I just had my circ relay do that. Sucks them 8124a are not cheap.

 
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Post by lzaharis » Tue. Mar. 19, 2019 12:07 pm

Be sure to tie in the 6006 so you have the ability to dump the excess heat that it may create.

 
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StokerDon
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Stoker Coal Boiler: Gentleman Janitor GJ-5, Van Wert VA-600, Axeman Anderson130 X3.
Hand Fed Coal Furnace: Harman SF3500 reduced down to 3 grates connected to its own plenum
Coal Size/Type: Rice, Chestnut and whatever will fit through the door on the Harman
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Post by StokerDon » Tue. Mar. 19, 2019 7:03 pm

Randyman wrote:
Tue. Mar. 19, 2019 11:02 am
I have a new aquastat coming today will see if that fixes it
I sure hope that's the problem. If not, that's a pretty expensive way to trouble shoot.
Randyman wrote:
Tue. Mar. 19, 2019 11:04 am
I just went by the efm installation manual
That was a good choice my freind, you can't go wrong there. :D

-Don


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