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31
Plumbing / Re: Pump Size Confusion
« on: August 29, 2019, 05:23:31 PM »
I'm not familiar with the Polar but anything else you want as much insulation on the Logstor as you can muster. It's not all that tough to get the jacket off even in tight spaces, and then what I do is wedge two pipes or pry bars in the pex and pull one toward me while pushing the other away. It usually blows the foam right off the pex and there you have it. Could always wait until the stove is sitting there and pre-plumb the pumps and get it ready to connect, measure from the feet to the adapters. Then head to the pad and measure up the Logstor whatever that distance was, plus 6" and TAPE THE ENDS SHUT. Drop the stove over the top while making sure nothing binds and when set, peel 18" of jacket off (heh, jacket off- get it?), then mark and cut your tubing to the correct height. Make connections and fill with water!
32
General Outdoor Furnace Discussion / Re: milk tank stove
« on: August 29, 2019, 05:14:03 PM »
Will he insulate it then and build a shack around it? How big is the firebox and what sort of heat exchangers are in there? Pretty cool idea
33
Plumbing / Re: Pump Size Confusion
« on: August 28, 2019, 06:11:59 PM »
No problem, happy to be of assistance. Let us know when you get that thing fired up!
34
General Outdoor Furnace Discussion / Re: milk tank stove
« on: August 28, 2019, 06:09:59 PM »
Doesn't it rain in your neighborhood? I see a dead Grundfos in the near future lol
35
Plumbing / Re: Pump Size Confusion
« on: August 27, 2019, 03:56:27 PM »
Thanks- 44,616 would be the design heat load. They have installed a 60,000 BTU furnace, which at 94% efficiency will yield 56,400 output. With 1075 CFM across the coil, you'd need roughly 110 degree discharge air to meet the sensible load. This would require only about 5 GPM at a 20 degree delta from 175* EWT to 155* LWT. Add a domestic load to that however, and we have a problem with very low return temps. If I were me, and I'm pretty sure I am, I would still splurge for the 26-99 and keep the flow rate up at 8-9 GPM. That way there are never any surprises to your boiler, and never any trouble heating the house and DHW simultaneously. I don't mean to spend your money, but the extra couple hundred bucks for a proper system goes a long way when you're risking mistreating a $10k+ boiler. Why gamble?
36
Plumbing / Re: Pump Size Confusion
« on: August 25, 2019, 08:06:35 AM »
You said you had a heat loss done when you built the house. That number would be a 5 digit BTU amount, which refers to the amount of BTU lost through the walls, ceiling, windows, doors, etc on a "design" day (the coldest day of the year) that needs to be replaced with the furnace. With that number, we would be able to determine your necessary flow rate
37
Plumbing / Re: Pump Size Confusion
« on: August 22, 2019, 03:38:36 PM »
What did the heat loss come back at? What size is your HX? The uphill battle to the garage plays no role in pump sizing, as the return trip will cancel out whatever was lost on the way up. With only 80 feet of Logstor, you should be able to push roughly 6-7 GPM with a 15-58 on high or 8-9 with a 26-99 on low. With a 20 degree delta T, those numbers are linear to BTU output (6 GPM = 60k BTU, 9 GPM = 90k BTU). With a worst case scenario DHW call of 4 GPM, you've got 120,000 BTU there alone to get 50 degree groundwater up to 110 degrees which at 6 GPM would hand you a 40 degree delta. If at the bottom of a cycle with 160 degree supply water, that brings your return down to 120- well below condensing temperatures. Add a simultaneous central heat call, you're flirting with disaster. What I would do, is head over to eBay and buy a 26-99 for $150, likely not much more than your supplier was going to charge for the 15-58, and yield the cheap insurance that your boiler will live a healthy life. As for the garage, same rule applies but will depend again on heat load and HX size to determine necessary flow rate.
38
General Outdoor Furnace Discussion / Re: Is bigger better?
« on: August 17, 2019, 07:55:17 PM »
It is not advisable to oversize a gasification boiler. They like to run hard. One cannot size a boiler by square footage alone, a proper heat loss calculation should be done in order to be accurate but if you have decent windows and insulation, all 3 of those are going to be well oversized. What size is your oil boiler and what type of emitters do you have in the house?
39
Plumbing / Re: Z-Supply / PerformaFlex?
« on: August 02, 2019, 04:59:17 PM »
Could always check with Hawken, they sell the exact same product under a different name for $1/ft extra and claim it to be their own. Funny part is, they use the exact same stock photo haha
40
Crown Royal / Re: Crown Royal efficiency numbers
« on: July 31, 2019, 04:51:33 PM »You certainly are a funny guy there Wreckit, number one, I personally never use the combustion efficiency to promote a boiler like many manufacturers do, so Please don’t make it sound like I do, the numbers I like to see are the official overall efficiency numbers from an approved lab.
I wasn't trying to be funny, just wondering what the actual numbers are from the Polar and how much better they are than say, the Crown Royal. I recall reading somewhere that the Polar didn't qualify for that Maine rebate either but that was probably just hearsay.
41
Crown Royal / Re: Crown Royal efficiency numbers
« on: July 29, 2019, 06:29:32 PM »
I sure hope Slim is okay, I'm really anticipating some clarification
42
General Discussion / Re: My new to me ride
« on: July 23, 2019, 03:18:37 PM »
Nothing wrong with that! Goldwing is a super nice bike. First time I rode one and found out they have reverse I almost wet my shorts
43
General Discussion / Re: My new to me ride
« on: July 21, 2019, 04:29:18 PM »
Replacing the Kawi or keeping it as a toy?
44
Crown Royal / Re: Crown Royal efficiency numbers
« on: July 18, 2019, 05:04:50 PM »
A 99.5% efficient boiler doesn't meet the EPA standards for 2020?
I wonder what the threshold is, maybe 99.6? Maybe Warren can chime in, since he helped write the law and knows his design will meet the standards.
I wonder what the threshold is, maybe 99.6? Maybe Warren can chime in, since he helped write the law and knows his design will meet the standards.
45
Crown Royal / Re: Crown Royal efficiency numbers
« on: July 17, 2019, 03:56:45 PM »
Isn't the Polar listed as like 96% efficient or some super high number? According to Warren, the Polar doesn't meet the 2020 standards either and he's the leading boiler expert in the world. Why would this customer take that risk over, say, a Crown Royal?