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I have a s400b timer for a stoker.. Right now the timer on the stoker is wired to the aquastat relay how do you wire this to run the stoker every hour to maintain the fire during summer use

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Posted on Jan 02, 2017

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SOURCE: i have an intermatic C8865

Intermatic C8865 timer is a 5-hour cycle timer that repeats same cycle each 5 hour period.
This timer has 120Volt clock motor and is 120V timer.
Timer has NO and NC terminals.
NO terminal turns ON when timer turns ON
NC terminals is ON all the time, except when timer turns ON. At this point NC terminal turns OFF.

You have 3 things: 120V timer, 120V honeywell transformer, 120V stoker motor/fan
The transformer needs to be ON at all times.
The stoker motor is going to turn ON when the cycle timer turns ON.

You have 120V cable with black wire, white wire (and bare ground, which connects to green ground screw and to other bare grounds and won't be discussed further)

Black wire is hot
White wire is neutral

Black wire connects to 'Switch common terminal' on timer.
Same wire also connects to black wire on Honeywell transformer.

White wire connects to 'Clock terminal' on timer
Same wire connects to white wire on Honeywell transformer and to white wire on Stoker motor.
So all the white wires are connected together.

Last wire is black wire to stoker motor.
This wire connects to NO terminals on timer.

Here is drawing.
Add a comment any time
geno_3245_182.jpg

Posted on Dec 14, 2010

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I have installed honeywell aquastat relay per instruction manual on my dunkirk xeb-4 lp boiler furance with honeywwell ignition unit s8610u but it wont ever start the exhaust fan checked everything several...


If aquastat wirings are ok, and control module had been set up properly, the the furnace should start.
Check if bypassing the control the furnace starts, if it starts then check aquastat wirings.
If it depends on the furnace, check the valve, the safety sensor and the ignitor.
Here is the guide to set up the Aquastat control:
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I have a Weil mcLain Gold gas furnace and the Amtrol WH-7L hot water maker. I heat alot with an indoor woodstove and if the furnace is not being used I cannot get any hot water. However, when the furnace...


You should download & review the manual for Amtrol Boilermate products here.

Page 12 of the manual begins examples of wiring between the Boilermate and aquastat (also gas valve and multi-zone relay), that is usually mounted on the boiler. In order to use it correctly, you'll need to determine which aquastat (or other device) your furnace has. You should be able to locate this info on the inside of the aquastat cover. The Honeywell Triple Acting aquastat is very common and looks like this:

11_29_2012_7_17_38_pm.jpg
The cover is held by a single screw on the top, bottom or front (depending on the model you have). The inside should have wiring information along with the model number. Compare the model number with the wiring diagram for it in the Boilermate manual.

Make sure power is OFF before continuing.

Check that all wires are terminated and undamaged. Make sure terminal screws are not loose. Tighten any found to be loose.

The orange wires are connected to a switch that is normally OPEN but CLOSES to start the boiler when the hot water has cooled. It is also used to operate a "power vent" for a minute or two both before ignition and after flame out for safe pre and post purging of the combustion chamber of furnaces that lack a chimney.

Blue wires are connected to a switch that is also normally OPEN but CLOSES to start the boiler when the hot water has cooled. When the switch connected to these wires is CLOSED, ignition happens instantly. There is no delay for purge so when these wires are used to start a furnace, it should be one with a chimney - not a power vent.

For additional help with your particular installation, you will need to provide information concerning the wiring diagram in the manual that applies. Otherwise, there are simply too many variations to walk through.

I suspect that the switch(es) that are connected to the orange (or blue) wires - or the device (aquastat or multi-zone relay box) is not operating as expected to start the furnace.

The troubleshooting section of the manual that seems to apply best is the section: Boiler will not operate when calling for hot water on page 27 (if you want to try some of their suggestions while waiting for additional replies).

I hope this helps..

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Utica Boiler model # MGB100HD with a Honeywell Aquastat Relay model # Type L8148E will not operate the circular pump. THe damper works and I can hot wire the circulator pump but it won't turn on...


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I don't understand everything being asked, so add a comment any time.

Problem1 is excessive electric bill.
Suspect is new 120Volt Taco recirculation pump.
Look at motor nameplate for amps and watts and HP. Taco pump is usually robust 1/3 HP which is 252 watts or same as running four 60 watt light bulbs.
If pump runs 18 hours per day x 252 watts = 4536 watts or 4.5 Kilowatts per day
Buy a kill-o-watt meter that plugs into outlet, and plug Taco pump into the meter for 48 hours.
This will give you total watts used for that time period.
1000 watts = 1 kilowatt.
Electric bill is probably 12 to 20 cents per kilowatt.
So if Taco uses 4.5 kilowatts per day, that is $.54 to $.90 per day multiplied by 30 days.
So cost is $15 to $30 per month.

Problem2 is Taco runs too long.
Taco operates either by thermostat or by timer. You choose which mode by using slide switch that is usually located under the timer dial. Set switch to TIMER to use timer, and ON to use thermostat, and off to turn TACO off.
If Taco is set for thermostatic operation, the Taco might be defective. Or there could be crossover problem at single handled faucet.
Another problem could be air in the water line: install air vent.
http://waterheatertimer.org/Crossover.html
http://waterheatertimer.org/Water-heater-recirculation-system.html
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C8835 Intermatic Timer, 30 Minute Cycle, used for and EFM coal stoker to keep it burning in summer. We are not sure how to hook up the timer, we did put the green wire on the green nut, not sure which...


Intermatic C8835 is 120Volt 30-minute cycle timer, which repeats same timing cycle every 30 minutes.
Timer has NO and NC terminals.
You will not use the NC normally closed terminal for this application, so no wire will connect to far left NC screw.

Jodie,
Green wire on green screw is correct, so you have started off well.
Bare copper wire also connects to green screw, so no more talk is needed about ground wires.

If you are using 240V or 277V, then add a comment and we'll lay out a plan for that wiring.
Wiring below is for 120V only.

You have 2 120Volt cables.
1) One cable comes from circuit breaker and has 1 black and 1 white wire.
The black 'line' wire connects to 'switch common' terminal, which is 3rd screw from left.
The white 'neutral' wire connects to 'clock' terminal, which is 4th screw from left.

2) The second cable goes to coal stoker, and has 1 black and 1 white wire.
The black wire connects to Normally Open or NO terminal which is 2nd screw from left.
The white wire connects to Clock terminal, which is 4th screw from left.

Notice that both white wires connect to same screw.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

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I have an intermatic C8865 timer. i want to wire it into an EFM model AF150-1 coal stoker furnace, because the fire goes down to far inbetween actual times heat is called for. also have main switch for...


Intermatic C8865 timer is a 5-hour cycle timer that repeats same cycle each 5 hour period.
This timer has 120Volt clock motor and is 120V timer.
Timer has NO and NC terminals.
NO terminal turns ON when timer turns ON
NC terminals is ON all the time, except when timer turns ON. At this point NC terminal turns OFF.

You have 3 things: 120V timer, 120V honeywell transformer, 120V stoker motor/fan
The transformer needs to be ON at all times.
The stoker motor is going to turn ON when the cycle timer turns ON.

You have 120V cable with black wire, white wire (and bare ground, which connects to green ground screw and to other bare grounds and won't be discussed further)

Black wire is hot
White wire is neutral

Black wire connects to 'Switch common terminal' on timer.
Same wire also connects to black wire on Honeywell transformer.

White wire connects to 'Clock terminal' on timer
Same wire connects to white wire on Honeywell transformer and to white wire on Stoker motor.
So all the white wires are connected together.

Last wire is black wire to stoker motor.
This wire connects to NO terminals on timer.

Here is drawing.
Add a comment any time
geno_3245_182.jpg

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