Plumbing changes

Plumbing changes

PostBy: wilder11354 On: Mon Nov 19, 2012 10:53 pm

Todaay i redid the main lines from coal boiler into room where oil boiler is, and zone circulators are. Basically i looped from and back to coal boiler, close space tees to circulator manifold, and from return manifold. Ther is a circulator(ifc) in loop, downstream from the close space T's. For tonite i have it circulating continously until i get elctrical controls wired so circultaor for coal boiler loop only comes on when any of the zone circulators come on. once set up it should let coal boiler idle more because theres no continuos circlation in loop.Oil boiler is hooked into coal boilers main loop in parallel, with its own circulator(ifc). will wire it to circulate only when coal boiler hits a preset low temp,and shutting of coal boiler loop circulator, and reverse circulator actions when coal boiler gets back up to a higher set temp.
Last edited by wilder11354 on Mon Nov 19, 2012 11:31 pm, edited 1 time in total.
wilder11354
 
Hand Fed Coal Boiler: Harman SF260
Coal Size/Type: nut or pea, anthracite
Other Heating: crown oil boiler, backup.if needed

Re: Plumbing changes

PostBy: wilder11354 On: Mon Nov 19, 2012 11:27 pm

already after 4 hours, the difference in temp drop in coal boiler(less), and recovery rate(faster) than from the way it was plumbed before. Boilers set at 170* for now, once outside temps start hitting mid 30s for day highs, will bump it up to 185* or maybe 190*.
wilder11354
 
Hand Fed Coal Boiler: Harman SF260
Coal Size/Type: nut or pea, anthracite
Other Heating: crown oil boiler, backup.if needed

Re: Plumbing changes

PostBy: freetown fred On: Tue Nov 20, 2012 4:49 am

Ain't it grande when a plan comes together W. :)
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix


Re: Plumbing changes

PostBy: 331camaro On: Tue Nov 20, 2012 6:46 am

primary secondary pumping is the way to go! how far away is the coal boiler from your oil boiler???
331camaro
 
Stoker Coal Boiler: Keystoker k6
Coal Size/Type: rice

Re: Plumbing changes

PostBy: Freddy On: Tue Nov 20, 2012 6:53 am

Good going!
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: Plumbing changes

PostBy: wilder11354 On: Tue Nov 20, 2012 7:45 pm

331camaro wrote:primary secondary pumping is the way to go! how far away is the coal boiler from your oil boiler???

The oil boiler is about 10 feet away in the house, coal boiler sits on deck in room i built for enclosing it. To get boiler fired up yesterday evening it holds about 100-120# of coal stoked, filled to where i normally do it for a 12 hour service routine. This morning i put in about 20-25 # and when i got home tonite, the bed is still deep, unburnt coal on top, good glow underneath, shook it, little bit of ash then embers. Not nearly as much burnt as before. added about another 15-20#, it will be good till morning, also bumped up AQstat to 180.
Now i need to figure out controls to get pumps to cycle/control way i want. Put an extra well in coal boiler for another stat, figuring i will need it somehow for getting circulators on boiler primary to work opposite of each other using coal boilers temp for on/off setpoints. I beleive Johnson controls might have relay in thier S350 series relay controls that will do it, but not sure. If so i only have to side plug mount in to exsisting modual relay setup(rail) and wire to circulators.
wilder11354
 
Hand Fed Coal Boiler: Harman SF260
Coal Size/Type: nut or pea, anthracite
Other Heating: crown oil boiler, backup.if needed

Re: Plumbing changes

PostBy: lsayre On: Tue Nov 20, 2012 7:55 pm

Great job! Any chance for pictures!
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Stockton Anthracite Pea
Other Heating: Resistance Boiler (13 KW)

Re: Plumbing changes

PostBy: 331camaro On: Tue Nov 20, 2012 8:08 pm

i was going to say, change the parallel connection to a primary secondary from boiler to boiler. this would allow simple back up from the oil boiler. just leave that oil t stat a few degrees below what your coal boilers t stat, that would also help out on a large heat load if you cant stoke the fire soon enough. however that would mean one more pump, and i dont know what you have for a zone controller if you have rm for another pump. i hooked my system up in that fasion and have had great luck with it. how do you like your harman? lets see some pictures!
331camaro
 
Stoker Coal Boiler: Keystoker k6
Coal Size/Type: rice

Re: Plumbing changes

PostBy: wilder11354 On: Tue Nov 20, 2012 9:46 pm

i like the Harman.... only thing i don't like is the bricks in it. rather low in height, and crack easily. I got some new ones before heating season from dealer, he had a pallet with bricks, so not sure if they are of good quality(higher rated temp) refactory material. So i will see about making my own molds(wood ) to cutom make my own sometime during the wimter. Taller and with notches in right places to use factory brick retainer lugs. PLus a higher temp rated refactory cement mix.
Thinking of getting 1000 pounds of stove coal to try when it starts getting bitter cold later this winter, do a mix of nut and stove.
wilder11354
 
Hand Fed Coal Boiler: Harman SF260
Coal Size/Type: nut or pea, anthracite
Other Heating: crown oil boiler, backup.if needed

Re: Plumbing changes

PostBy: nepacoal On: Wed Nov 21, 2012 9:00 am

Wilder,
I have a similar setup but still in parallel with the oil boiler. I added a second circulator in series with the oil burners and use a TACO ZVC-403 controller on the coal side.

The control side of the coal is completely separate from the oil. I added a separate thermostat for the coal and wired it to the ZVC403. I wired the switch of the dump control on the SF260 to another zone on the ZVC 403 and use the end switch of the ZVC403 to turn on both the coal/oil circulator and the main house circulator together.

The oils remains on it's own thermostat and it's set to 60. I'm sure there are other ways to do this, but this works very well for us.
nepacoal
 
Hand Fed Coal Boiler: Harman SF-260
Coal Size/Type: nut

Re: Plumbing changes

PostBy: Rob R. On: Wed Nov 21, 2012 9:28 am

nepacoal, welcome to the forum. Feel free to introduce yourself. Introduce Yourself
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: Plumbing changes

PostBy: nepacoal On: Wed Nov 21, 2012 9:35 am

Thanks Rob... I actually joined over a year ago under a different name, but had a computer crash and lost the login info. I've learned a great deal here but rarely post but since Wilder had a similar setup I wanted to share my small success with my current control wiring.
nepacoal
 
Hand Fed Coal Boiler: Harman SF-260
Coal Size/Type: nut

Re: Plumbing changes

PostBy: wilder11354 On: Wed Nov 21, 2012 9:09 pm

nepacoal, will look into the taco controller your talking about. for now i have great heat, lower coal consumption by about a half as much. Turned CB aquastat back down to 170 with this unsesonally warm stretch. Will enlighten with what i do when i do it. Thanks for input so far.
wilder11354
 
Hand Fed Coal Boiler: Harman SF260
Coal Size/Type: nut or pea, anthracite
Other Heating: crown oil boiler, backup.if needed

Re: Plumbing changes

PostBy: dh1200s On: Thu Nov 22, 2012 1:52 pm

As nepacoal said I use the end switch on the switching relay, in my case using pumps for my loops (Pri/Sec setup using a WL110 boiler) an SR503 to turn on the primary loop pump for any call to the SR503 switching relay. I use my down stairs loop as my dump zone.

Any call to my SR503 for heat or dump zone signaling will signal on the primary loop pump via the X1, X2 end switch terminals on my SR503 to the TT terminals on my WL110 aquastat which is a L7224. The C1-C2 terminals of the L7224 aquastat then power up the primary loop pump.

The switching relay (SR50X) will add install cost and you can do the same with cube relays for sure but for me the SR503 made the wiring a bit less painless...........sounds like you are well on your way. There may be a better way to accomplish the goal for you but this works solid for me in my configuration. Happy Thanksgiving to all………….Dick
dh1200s
 
Stoker Coal Boiler: Leisure Line WL-110
Hand Fed Coal Boiler: HS-Tarm 202
Hand Fed Coal Stove: Harman TLC 2000

Re: Plumbing changes

PostBy: wilder11354 On: Mon Nov 26, 2012 9:45 pm

You asked for pictures...well here it is.
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Primary loop on coal boiler,
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Zone manifolds
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wilder11354
 
Hand Fed Coal Boiler: Harman SF260
Coal Size/Type: nut or pea, anthracite
Other Heating: crown oil boiler, backup.if needed