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Topics - donahuej

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1
General Outdoor Furnace Discussion / Home built
« on: February 26, 2012, 08:33:48 AM »
Another quick question.  Anyone here have any luck with plans or sketches for a home built boiler?  Thinking of giving this a shot for my shop because it some 300 feet from the house - forget heat loss not sure I could even look at the bill for the thermopex :bag:  We have a gas powered welder and access to any type of steel you could ask for.  These boilers are fairly basic in design just seeing if anyone had a plan set or a sketch they might recommend.

Thanks again for all the help,

Jamie

2
General Outdoor Furnace Discussion / Heat draw from a plate exchanger
« on: February 26, 2012, 06:37:46 AM »
Hi all -

Quick question; how much heat loss do you see across a 30 plate heat exchanger?  I have a 30 plate stainless with 1" supply and returns, 1" copper for my boiler and well water supply loops and I see 25 -30 degree drop when filling the big tub in the house. My boiler uper limit is 180 degrees lower is 170ish. I have digital temp gauge with leads zip tied and metal taped to my copper lines right after the thermopex enters the crawl so my readings are right on the money. Normal or what?  I have a constant supply of really hot water, not complaining, just want to see what others are experiencing..

Thnaks,

Jamie

3
Pools & Hot Tubs / 1st Post in the new area!!
« on: January 13, 2012, 04:00:50 PM »
Couldn't resist...I heat my 18x36 in ground with my boiler - works great!!

4
Plumbing / Question....
« on: October 19, 2011, 07:28:40 AM »
Wrapped up my install here are the particulars:

From OWB one zone 400' of 1" pipe driven by a B&G PL-36 pump to 30 Plate HX then to 1st Water to Air exchanger (both in the crawl space) and then to 2nd Water to air in the attic (up 10 feet or so one story rancher).  I've tried to figure the head pressure but the only thing I figured was my head hurts from all the pressure....

Question:

Any quick and dirty way to tell if the one pump is enough?  I have another PL-36 and or a NRF-22 I was thinking of putting on the return side not sure thoughts?

PS I understand that an open system has a tough time pushing water up...just not sure how tough.  The system is working just want to hear what you guys think.

Thanks,

Jamie

5
Now that I can keep my house 73 degrees all winter  :thumbup:- I'm thinking of way to use the boiler infrastructure to cool the old homestead on those 100 degree July days.  Anyone every tried a geo setup up to pump cold water thru their line set in the summer?  In theory it's exactly what a conventional geothermal system would do pump and or circulate water in the ground.  Here is the idea:

Take 600-1000 feet of 3/4 poly burry it 6-8 in a trench - t off my 1" supply from the boiler to the line set in the house - pump the water to air exchangers and back to the return side of the boiler - push the water thru the underground loop instead of the boiler.  It's gotta take the heat out and cool the water right?   I mean we all have the effort and $$$ into our line sets, exchangers and pumps this should work.  I may need to mess with the pump and coil in the ground diameter/length by the theory seems sound to me.  Any HVAC guys out there that can help size a geo coil?

Ideas - thoughts - comments -

6
Ok team – I have worn out the search function on this site and I think I have a fairly simple problem I’m trying to solve, help is appreciated; here it goes:

Looking to run one thermostat to control two heat sources:

System configuration:

- Outdoor boiler on/off on aqua stat in the unit & pump runs 24 x 7 (so no need to control anything out there)

- Inside forced hot air system with water to air heat exchanger

The issue; I’ve tried a number of professional Honeywell thermostats ( I have the 7600 right now) to control two heat sources.  The heat pump with emergency backup is out as I have no heat pump and I don’t want my condenser running while I’m trying to heat :bash:.  So I went to the two stage heat, it works but I can’t configure the settings, I can’t change the temperatures.  I called Honeywell to verify my connections they said everything was correct and the only way to use any Honeywell in this configuration is to use the non configurable two stage heat.  I’ve attached a picture of what I have done, the yellow lines are how I’m setup in the 2 heat stage mode and it works but the furnace kicks on after about five min of the fan just running so it defats the purpose of running the OWB.   I realize I can go the two thermo route – just feel like we are smarter than this problem and I just have the wrong thermo – any thoughts?  Trying to stay away from adding switches (I can think of a few ways to do that) and or additionally relays, trying to make this as straight forward for the wife and kids while I’m away on business. HELP!!! :-[

Thanks,

Jamie


7
General Outdoor Furnace Discussion / What do you think?
« on: April 08, 2011, 02:04:39 PM »
I'm hot and heavy into the install now.  Got my thermopex and am lighter 1k but hopefully it pays off in less wood :thumbup:..Here is the question please let me have it - I need your opinions:

1 story rancher with crawl - have my boiler lines in and connected to my 1" copper trunk in the crawl - now I'm using a plate exchanger on the demand domestic hot water first and then on two two water to air exchangers.  Is there any good reason to bring the plate exchanger up into the washroom with the water tank?  Can I just plumb everything in the crawl?  If the answer is yes I have go up and then back down to catch the water to air exchangers in the ducks (I plan to pull them in the summer when calling for air restriction and freezing) Thoughts?


Thanks a ton,

Jamie

PS for bleeding air from the system - I thought to extend a air bleeder off of a T to the plate exchanger above the water heater.  On line not elbows valves and all.

8
Plumbing / Comments suggestions?
« on: April 02, 2011, 06:20:23 AM »
I'm getting ready to pull the trigger on the material list.  Please take a look and shoot holes in this layout  :bash:.....I know the pump is at the stove...what do you think?  Good bad? 

Thanks for the help,

Jamie

9
General Outdoor Furnace Discussion / New guy - a question
« on: March 31, 2011, 05:33:31 AM »
Any feedback suggestions on American Royal Stoves?  I was able to pick one up at a close out price , brand new, for under 4k....I have the pad poured and the unit set.  Seeing if anyone has any experience with this brand and model 7400.  This is a great site and I'm reading all I can - learning a ton - I appreciate it.

Thanks for the help,

Jamie Donahue
jamiedonahue@comcast.net

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