DHW Marathon

DHW Marathon

PostBy: Former WoodHog On: Fri Jan 31, 2014 9:54 pm

Well, my coal furnace has been online for about 6 weeks now and we’re loving it!

I had a DHW loop installed and have been planning, drawing, discussing, staging and intending to get this thing cut over. Last Saturday was the day and after 20 hours I sat back, exhausted and extremely grateful as I observed my temps on two thermometers I installed and kept my eyes open for potential leaks.
Long story short, I got er’ done and what’s most miraculous is for so many sweat joints, gates, drains, CVPC glue joints and a mixing valve, I had one minor leak! And that was a loose stem nut on a gate valve.

(Sammy Morse said it best, if not first:..” What has God wrought?) Oh yeah, there was that loss of hot water 24 hrs later from too much Teflon paste...oh well.

When we installed the Koker Lite, we kicked our oil fired WH to the curb and installed an electric water heater. When the bill arrived 10 days ago, it was all the motivation I needed to double down and take advantage of my DHW loop.
For once in my life I’m anticipating the arrival of a bill from the power company next month….trusting that my efforts at ‘pre heat’ will put a dent in my kWh
As with many of these projects, I can do ‘em, I just can’t do them as fast and efficiently as the plumbers, electricians, carpenters out there….That being said, it was worth losing a night’s sleep!
So far so good! Let’s see how it goes over the next few weeks.
Ongoing thanks to the forum folk for posting, discussing and sharing the goods…you all paved the way, again, for me on this one.
‘Hog
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52 G looped into the furnace
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Loop Temp after several hours burn time
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Screen clogged as a result of too much Teflon paste....
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Former WoodHog
 
Hot Air Coal Stoker Furnace: Koker Lite
Coal Size/Type: Rice
Other Heating: Vermont Castings Vigilant- Wood

Re: DHW Marathon

PostBy: StokerDon On: Fri Jan 31, 2014 10:31 pm

Nice job WoodHog,

I see you finaly got the cold side plumbed into the mixing valve. And, somewere along the line you insualted the air duct from the Koker. Nasty looking teflon covered screen there!

-Don
StokerDon
 
Stoker Coal Boiler: Yellow Flame "Competion Series" 3 grate boiler
Hot Air Coal Stoker Stove: Alaska Stoker1? can't figure out these dern Alaska names!!! It's a big old black one.
Hand Fed Coal Furnace: Harman SF3500
Coal Size/Type: Rice and Chestnut
Other Heating: Noth'in but COAL! Well, Maybe a little tiny bit of wood

Re: DHW Marathon

PostBy: McGiever On: Sat Feb 01, 2014 10:26 am

Assume it is pumped and not thermosiphon???
Remember: Never allow any valve to isolate a T/P Valve or an explosion can result.
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Visit Lehigh Anthracite

Re: DHW Marathon

PostBy: Former WoodHog On: Sat Feb 01, 2014 10:19 pm

No, it is thermo-siphon. It's 24" from the furnace, and I put a small heat shield between the body of the water heater and the furnace. I was concerned 155 degrees might not be too good for the electronics and wiring in the heater.

Do you favor pump over thermo siphon? Seems to be working OK.


Thanks for the tip on the valve isolation. I realize the potential danger. In fact, as I was isolating loops last weekend I realized I almost created a problem doing so, as I was, briefly operating without a P/T valve. I quickly came to my senses, drained and installed it and carried on.
Former WoodHog
 
Hot Air Coal Stoker Furnace: Koker Lite
Coal Size/Type: Rice
Other Heating: Vermont Castings Vigilant- Wood

Visit Lehigh Anthracite

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