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OWF install

Scootermsp - Looks great!

I am anxiously awaiting my new Sequoyah E3400 gasification OWF.
I am going to get everything hooked up so when the stove arrives (Nov15th) I can get heating.

I was curious to how many square feet you are heating and your choice of the 30 plate exchanger?

Also curious to why there are so many circulator pumps on your heating system?

I have a 3000sqf house with 4 baseboard zones, 1 hot water (boiler mate) zone and a zone for my garage space heater. I only have one circulator pump. :confused:

JD
 
roadkingjd said:
Scootermsp - Looks great!

I am anxiously awaiting my new Sequoyah E3400 gasification OWF.
I am going to get everything hooked up so when the stove arrives (Nov15th) I can get heating.

I was curious to how many square feet you are heating and your choice of the 30 plate exchanger?

Also curious to why there are so many circulator pumps on your heating system?

I have a 3000sqf house with 4 baseboard zones, 1 hot water (boiler mate) zone and a zone for my garage space heater. I only have one circulator pump. :confused:

JD
Click to expand...

Thanks, I'm heating a 4600 sq. ft house. I don't keep it all warm all the time though. My dealer told me anything over 30 plates was just overkill and a waste of money. My house is 4 yrs old. I built it myself so I went nuts with the insulation. All windows are Pella double pane argon filled. The three Taco pumps you see together feed 2 air handlers and a set of baseboards in the room over my garage. The 1st floor is one zone that I have always set back to 50F at 7PM then back to 70 at 7AM. The second floor air handler serves 2 zones with motorized dampers. And the third again is for the baseboards in the room over the garage (We only heat this when the kids are home from school, weekend,snowday, etc). The 4th pump you see (left near 80 Gal hot water storage tank) does domestic hot water. By adding an exchanger I didn't change anything else with my whole system such as thermostats, basically the system functions exactly the way it did before except the boiler doesn't kick on. I should have done this when I built the house !!!:chainsaw:
 
Thanks for the explanation on your setup.
I will be referencing your work as I set mine up.

I've attached a picture of my current setup. I think I'll do as you did and pull from the drain spigot and push back through the overpressure port.

Any thoughts on the pump size for this circ loop? Does this pump run continuous 24X7?
 
Hey scooter, nice work. congrats... If your Weil Mclain fires up when you have the circulating pump running you may have an issue with the water overheating in your furnace. Looks like your pumps may be fighting each other with the circulating pump loop coming out of the drain on the furnace. If it does and you don't feel like just shutting it off when you change over to gas you could put a thermocoupler on your incoming OWB line and set if to shut off your circulating pump at say 130ish. Just a thought, I'm no plumber.
 
Works great

Johnny Ringo said:
Hey scooter, nice work. congrats... If your Weil Mclain fires up when you have the circulating pump running you may have an issue with the water overheating in your furnace. Looks like your pumps may be fighting each other with the circulating pump loop coming out of the drain on the furnace. If it does and you don't feel like just shutting it off when you change over to gas you could put a thermocoupler on your incoming OWB line and set if to shut off your circulating pump at say 130ish. Just a thought, I'm no plumber.
Click to expand...


My oil burner has not kicked on at all. I'm coming up on 2 months without burning a drop of oil. The pumps are not fighting each other. I can tell this as the HX is pulling 30 degrees off the OWB water as it passes through. I couldn't be happier. BTW this is done exactly as recommended by my CB dealer and he really is aces when it comes to this stuff. Thanks...good luck.
 
glad your having a ball with your new stove scooter. same here. pumps fighting each other was a bad way to put my heads up. My set up is pretty similar to yours. When my circulating pump is running, like yours I pull the water out thru the bottom of my weil-mclain. If my weil-mclain is running (heating water) and I continue to pull water out the bottom with my circulating pump I can boil water in my weil-mclain. I'm fighting thermodynamics. Not a big deal since I've literally shut the propain valve off on my tank. I played around before I lit my cb. Ran the weil-mclain with the circulating pump running and she boiled a bit when it was set at my normal 180 degree cut off. I wasn't sure about pulling water backwards thru my weil-mclain while it was heating and it turned out to be a bit of an issue for me. Nothing serious I just don't run the circulating pump with my weil mclain heating. Turns out the cb is doing so well I don't forsee ever running the propain again. anyway just in case you happen to run into my problem you got an idea what I found out...
 
Johnny Ringo said:
glad your having a ball with your new stove scooter. same here. pumps fighting each other was a bad way to put my heads up. My set up is pretty similar to yours. When my circulating pump is running, like yours I pull the water out thru the bottom of my weil-mclain. If my weil-mclain is running (heating water) and I continue to pull water out the bottom with my circulating pump I can boil water in my weil-mclain. I'm fighting thermodynamics. Not a big deal since I've literally shut the propain valve off on my tank. I played around before I lit my cb. Ran the weil-mclain with the circulating pump running and she boiled a bit when it was set at my normal 180 degree cut off. I wasn't sure about pulling water backwards thru my weil-mclain while it was heating and it turned out to be a bit of an issue for me. Nothing serious I just don't run the circulating pump with my weil mclain heating. Turns out the cb is doing so well I don't forsee ever running the propain again. anyway just in case you happen to run into my problem you got an idea what I found out...
Click to expand...

I see what you mean now. My aquastat on the W-M is set down to 140*F, so unless the OWB goes way down/out the oil burner won't kick on. If the OWB is sending in water at 140 F I wouldn't think the boiling inside the W-M would be an issue. If anything it will heat the OWB loop. You agree?
 
Scooter,nice setup and boiler piping! I just found this thread today.I was thinking about doing the same thing you did and use the boiler drain,and blowoff spigot.My boiler is a similar Weil Mcclain 3 section,and i have 3 zones off it now.Do you have the heat exchange and OWB circulators wired to stay on 24/7,which keeps the main boiler at OWB temps,or do you have them set off the aquastat on the main boiler,to start pumping when temps drop in the main boiler.I was wondering how much $$ it would cost to just leave those 2 on 24/7 during the cold months,which is what i plan to do,as i have a slab on grade construction,and my boiler pex goes thru my attic,and drops down,so i dont want to shut my circulator off unless I run antifreeze.I was also wondering how much 15 gallon of antifreeze drops the freezing point of your boiler when it holds over 200 gallons of water,kinda seems like a drop in the bucket.I figured Id have to buy a 55 GAL drum of antifreeze at the minimum if I wanted to protect down to zero at least. My OWB is supposed to be a Shaver 250,but it still isnt here yet,ordered mid June.Trying to get as ready as I can for it,I have a natures comfort unit in my eyesights,if this Shaver dont get here soon.Again,very nice work,I really like your setup.
 
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when I played around with mine I didn't (couldn't) make it boil at 140. It wasn't till I got (160-180) that it started banging. Now that I've been running for a few months I feel confident that I could set the thermocoupler on my incoming OWB line to 150-160 and have my weil mclain fire up at 140. That would shut down my circulating pump if I droped below 150-160 and my w-m could take over and flow properly. But now I'ved gained enough confidence in the cb so I really haven't thought about my automatic backup. I set my themocoupler to it's lowest setting and forgot about it. I guess with real winter coming I should revisit the subject and set the thermocoupler properly. But then I'd have to open my pro-pain valve just in case and I really like the idea of that pig being choked off.LOL And now that I think of it I don't know just how low my boiler temps would go if all zones were calling for heat at the same time and my cb was bottoming out at 175. I'd hate to have a premature ignition on my w-m, just a matter of gereral principles. The w-m needs to stay off till I reach some sort of time record that is yet to be determined. Like two or three years or till my twisted logic says the cb is paid for itself. Life is good.
 
Circs on 24/7

Keeps the OWB and W-M temps fairly close. I cut the SP on the CB back to 180*F for now (will go back to 185F for the colder weather) and noticed the wood savings. I noticed it kept up well last night when the wife decided to fill the 120 Gallon Hot tub for my kids to have a bath/swimming party. Typically when multiple zones are pulling heat I find the gauge on the water coming out the drain down as low as 120-125F. It returns at 140-150F (with CB bottomed out) however gauge on front of W-M hasn't gone below 155-160F. Keep in mind this is with a 180F setpoint. 185 setpoint keeps temps 5-10F higher systemwide. Install plenty of thermometers so you have a full picture of what is going on in both loops.:chainsaw:
 
Scootermsp said:
Kyle, I have binoculars in my bedroom, I can look out my BR window and check the temp from the comfort of inside!!!!!! I might just get a cheappie pair on ebay just for this task.
Click to expand...


Nice Install,
Try a wireless bbq thermometer, I put one on my supply line so I can check it from anywhere in the house.

Attached is a IR photo of my Central 4436 all fired up.

Mogollon
 
I have to tell you Scooter, your pictures are helping me a lot with my install. +1 for sharing your work.:clap:
 
urhstry said:
I have to tell you Scooter, your pictures are helping me a lot with my install. +1 for sharing your work.:clap:
Click to expand...

I second that! They helped m as well. I had wanted to tie into the boiler the way he did,but wasn't sure if the 3/4" lines would be enough.Thanks to scooters work,and pics i know mine will be fine.
 
No Problem!

John D said:
I second that! They helped m as well. I had wanted to tie into the boiler the way he did,but wasn't sure if the 3/4" lines would be enough.Thanks to scooters work,and pics i know mine will be fine.
Click to expand...

Glad to help....NOW enjoy your FREE heat! I was happy to have mine last night when I got home from the Patriots-Steelers game...sitting in the pouring rain for 3 quarters was like putting on your winter clothes, pulling a chair and television into the bathtub and turning the shower on cold! I will say the Sorel Conquest Steel toe boots I got were awesome...my feet were dry and warm.
:clap:
 

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