Joined on January 19, 2012
Last Post on March 11, 2014
@ April 12, 2013 11:53 PM in Radiator Hot, Thermostat Off WHY?? Triangle Tube Prestige ExcellenceIt sounds like the diverting valve that changes the boiler from DHW to heating is not working correctly.
The bigger concern is that I do not see the boiler pressure relief valve or the dhw T&P valve. These are major safety components. If you take picture of the entire top of the boiler it would help.
@ April 12, 2013 11:29 PM in Return temperature too lowIt looks like your bipass is a pressure differential bipass. You need a thermostatic type valve to assure the boiler will run above it's condensation point.
@ April 12, 2013 9:31 AM in burnham freedom mod/con boilerWhy are you considering an aluminum boiler when there are so many good stainless ones.
Aluminum would be my last choice.
I think the WM model you suggested is a Givonni exchanger.
I would use a stainless firetube exchanger like Triangle Tube, Lochnivar ect. They require less maintenance, use less circ energy and generally have a better track record.
@ April 12, 2013 12:01 AM in Return temperature too lowThe condensation can be cause by several things. Short boiler cycles, high mass radiators, long uninsulated flue, inadequate circulation.
More about your system?
@ April 11, 2013 11:52 PM in Replacement options for oil furnace?Here is a nice tool www.eia.gov/neic/experts/heatcalc.xls
@ April 11, 2013 11:38 PM in pressure paradox?Bob,
That is quite a puzzle. I assume there is a clear path from the drain gauge to triadicator?
Since your gauge and 2 pressure reliefs say it is less than thirty. Try another triadicator or as suggested move your gauge.
@ April 11, 2013 11:29 PM in GE Geospring with an indirectHere is a link to the spread sheet www.eia.gov/neic/experts/heatcalc.xls
You are presently paying $44.86 per MBTU with the geospring running in non heat pump mode, $17.58 at peak efficiency.
Your boiler is costing $32.45 per MBTU on it's best day.
What do you think of putting the boiler mate before the geospring and setting the boiler mate aquastat as low as it takes to keep the geotherm in heat pump mode?
Just thinking out loud.
@ April 10, 2013 11:24 PM in Boiler ControlsChris,
The day the boiler comes preplumbed with primary secondary ,can fully modulate the gas valve, blower, and the primary circulator, I will be a happy man.
Any guesses who will get there first? Viessmann?
As far as indoor feedback, learning, and all, tekmar and others do good job of this.It really is plug and play. Set up the 0-10 vdc and let it rip.
@ April 10, 2013 7:10 PM in GE Geospring with an indirectWhat type of boiler is powering the indirect. What are your fuel and electric rates.
Keep in mind the geospring savings are as compared to electric. Another inconvenient fact is that the heat it "pumps" is coming from the air inside the house.
@ April 9, 2013 11:43 PM in Pipe Length ConfusionThe attached file was originally posted by Mark Eatherton. I think it does a nice job of clarifying what is really important.
I think you need to define "it works". Not following the rules will shorten the life of components and cause circulators to underperform. Air entrapment, ghost flows and cavitation are other issues. Technically the system is "working", it still is not good practice.
Sometimes posts just don't catch anyone's attention. There was nothing wrong with your question,
@ April 9, 2013 10:57 PM in Too many options - need helpHeatpro,
Man you sure can type. I appreciate your thorough response. It is always helpful to listen to other peoples though processes. It sound like your approach is working well for you in your market.
I think I will always be a "keep it simple" kind of guy. I am in the mountains of Colorado. Our boilers are already working 8 months a year.
I think you will continue to like Triangle Tube. I have a property with forced air heat. I think I will try out a Rinnia.
@ April 9, 2013 2:14 PM in Too many options - need helpThis is a good dialog.
I have to agree there are installs in moderate climates and existing structures with difficult conditions where high efficiency doesn't make sense.
For people in zone 5 and less the number will never work.
As much as I respect you, I can't get my head around installing 2 water heating appliances. It just seems like twice the venting and twice the maintenance.
If you are going to install a high efficiency flue why not install a mod/con and an indirect. WIN, WIN!
I believe that given the sort cycling nature of tankless heaters, they achieve an overall, real world efficiency of no more than 80%. They require far more maintenance than a firetubeHX mod/con with an indirect.
On the heating side,I have never seen a mod/con that did not save a real world 25% over non condensing. The secret is in the turndown ratio. Correctly installed they just don't short cycle.
@ April 9, 2013 1:14 PM in Slab overpour "Radiant Green" hydronic heating panels?Right off the bat the manufacture claims an R of 4.3 and an overall thickness of 1".
1/2" tubing measures about 5/8" on the outside. I would assume they left about an 1/8" of space around the tubing, that would leave about a 1/4" for insulation. In the video the bottom looks to be made of plastic, not foam. I think it is safe to say that this product offers no resistance to downward heat loss. I would ask them for an "ES Report" and watch them squirm. The lack of aluminum around the tubing is also going to reduce the heat transfer. I would guess it is called "radiant green" because of the money they will make selling a misrepresented piece of plastic.
@ April 9, 2013 12:57 PM in Circulators that you can set GPMIf you want a fixed gpm on the boiler side just look at the charts and buy the correct circ. There is very little guesswork in that.
Why in the world does he want zone circs. Zone valves and your bumble bee will use far less energy.
@ April 8, 2013 8:27 AM in wicked water hammer and boiling in pipesYour boiler should not be boiling and heating the house during a hot water call. Their is an aquastat (gray box) on the pipe between the pump and the hot water heater. What is it set to?
@ April 1, 2013 9:20 AM in Flat plate installIn addition to "pumping away", I would suggest using zone valves and an ECM circ like the Grundfos Alpha. Your system will use much less electrical energy.
@ March 30, 2013 2:05 PM in Pump for Washing machineI have had good luck using a front loading model and putting it on a platform. Most models make one with a drawer underneath.
If you want to keep the wash tub, any inexpensive lift will work. Zoeller makes a nice one.
@ March 30, 2013 8:23 AM in Electric boilerSwei,
I have seen a graph of the boiler's energy use. It appears to be a multistage setup with multiple elements. I will open it up and figure out what controls the beast on my next visit.
@ March 29, 2013 11:44 PM in Electric boilerIs there any downside to controlling a large electric boiler with outdoor reset?
I am working on an "always on" commercial system that has a tendency to overshoot.
Can you damage an electric boiler by turning down?
@ March 29, 2013 11:27 PM in Does an indirect HW heater make sense with steam boiler?Steve,
I agree with your thinking on steam and indirect.
Have you considered an instantaneous?
@ March 24, 2013 11:20 PM in Water service freezingIce,
I think you are right. Not sure about the water dept. folks.
I have a tee in place and the line is a straight shot.
@ March 24, 2013 10:51 PM in Just Don't Get Modcon Boiler Pump Charts!Check out this one http://www.firedragonent.com/DM6802B.htm
I have had one for 2 years and it works well.
3 benji's = $300