K6 Feeding Above Hi Limit

JR

Why is the aquastat you pictured removed from the well?

waldo lemieux wrote:JR

Why is the aquastat you pictured removed from the well?

So we could take better pics. It's normally in the well.

[/quote]
I think that is your problem right there. If the 4006B is being used as a dump zone it needs to work the opposite way, make contact on temp rise. This should run the pump, NOT the stoker when the boiler temp gets to about 200 degrees.

-Don[/quote]

That makes perfect sense. So how would we correct that? Is there some calibration or is it just shot and needs replacing?[/quote]

Wait. No. It is backwards. The way it acted seems correct. When the temp it senses exceeds the temp it's set to the circuit completes activating the pump. When the temp it senses is lower than it is set to it remains open. That's what it did. He turned down the temp setting until it registered a higher temp than set to and the circuit closed and activated.

It has to be some incorrect wiring on the 4006b on our part or the 4006b is somehow faulty. Bypassing it and going straight from thermostat to TT it has been running correctly for hours. The way it was wired was red from thermostat to 4006 then from 4006 to TT. White same thing. Is that wrong?

JR,

When you got the new tstat was it a heating and cooling unit or just heating. ?

I wired my 4006b to open my First floor zone valve if tripped.

waldo lemieux wrote:JR,

When you got the new tstat was it a heating and cooling unit or just heating. ?

Both. But we got it because it was identical to the one already installed. I thought surely it would work. It's one of those simple round dial things. http://m.lowes.com/pd/Honeywell-Round-Mechanical- ... /999956646

The White should go straight to TT. At least that is how I read it as you wrote it. You only break one wire with the SPST switch. Did you attach both to the switch? SIngle Postition/Single Throw is like a wall switch for one location/lights. On or off.

Kevin

Jrhughes wrote:

I think that is your problem right there. If the 4006B is being used as a dump zone it needs to work the opposite way, make contact on temp rise. This should run the pump, NOT the stoker when the boiler temp gets to about 200 degrees.

-Don[/quote]

That makes perfect sense. So how would we correct that? Is there some calibration or is it just shot and needs replacing?[/quote]

Wait. No. It is backwards. The way it acted seems correct. When the temp it senses exceeds the temp it's set to the circuit completes activating the pump. When the temp it senses is lower than it is set to it remains open. That's what it did. He turned down the temp setting until it registered a higher temp than set to and the circuit closed and activated.[/quote]

Backwards is what I was suspecting with my line of questions and requests for tests.

I meant I must have described it backwards. To be clear: the 4006B activates when the temperature it senses is higher than the temp it is set to. That seems like the correct way to work. Am I wrong?

Look at this: http://www.firedragonent.com/triple.pdf

I meant I must have described it backwards. To be clear: the 4006B activates when the temperature it senses is higher than the temp it is set to. That seems like the correct way to work. Am I wrong?

That depends on which sub model you have. I found at least 10 on the Honeywell home page. Some make on temp rise, some break on temp rise. I know I have been confused as to which I needed before. Have to think it thru and test it a couple of times. If it is not working, I suggest it is wrong.

Kevin

INSTALLATION INSTRUCTIONS
60-0915-5
L4006A,B,E,H
Aquastat® Controllers
APPLICATION
These boiler-mounted, immersion type controllers
operate in response to temperature changes in hydronic
heating systems.

L4006A breaks the circuit on a temperature rise to the
control setting. It is used for high limit or low limit control.
When used as a controller or as a low limit, a separate
high limit must be used.

L4006B makes the circuit on a temperature rise. It is
used as a circulator controller, delaying circulator
operation when boiler water temperature is below the
control setting

L4006A,B,E,H AQUASTAT® CONTROLLERS
60-0915—5 4
OPERATION
For proper selections of settings, follow boiler
manufacturer recommendations:
1.
High limit controller: Shuts off burner when water
temperature exceeds high limit setting. Burner
restarts when temperature drops to high limit setting
minus the temperature differential.
2.
Low limit controller: Maintains minimum boiler tem-
perature for domestic hot water. Turns boiler on at
temperature setting, less differential.
3.
Circulator controller: Prevents circulation of water
that is not hot enough. Breaks circulator circuit at
temperature setting minus differential and remakes
at setting.

L4006A breaks the circuit on a temperature rise to the
control setting. It is used for high limit or low limit control.
When used as a controller or as a low limit, a separate
high limit must be used.

L4006B makes the circuit on a temperature rise. It is
used as a circulator controller, delaying circulator
operation when boiler water temperature is below the
control setting

Yup, went back and looked at the A's and B's.....that is correct of course.

Kevin

I always liked the ones that work both ways with adjustable diff....cant go wrong with them.

McGiever wrote:

INSTALLATION INSTRUCTIONS
60-0915-5
L4006A,B,E,H
Aquastat® Controllers
APPLICATION
These boiler-mounted, immersion type controllers
operate in response to temperature changes in hydronic
heating systems.

L4006A breaks the circuit on a temperature rise to the
control setting. It is used for high limit or low limit control.
When used as a controller or as a low limit, a separate
high limit must be used.

L4006B makes the circuit on a temperature rise. It is
used as a circulator controller, delaying circulator
operation when boiler water temperature is below the
control setting

L4006A,B,E,H AQUASTAT® CONTROLLERS
60-0915—5 4
OPERATION
For proper selections of settings, follow boiler
manufacturer recommendations:
1.
High limit controller: Shuts off burner when water
temperature exceeds high limit setting. Burner
restarts when temperature drops to high limit setting
minus the temperature differential.
2.
Low limit controller: Maintains minimum boiler tem-
perature for domestic hot water. Turns boiler on at
temperature setting, less differential.
3.
Circulator controller: Prevents circulation of water
that is not hot enough. Breaks circulator circuit at
temperature setting minus differential and remakes
at setting.

Yes. Mine is L4006B so it seems to be reacting correctly.