Joined on October 13, 2004
Last Post on December 5, 2013
@ December 5, 2013 9:32 PM in Pex fittings and flowI saw the Venturi profile in the section drawing before I read it .....genius.
@ December 5, 2013 9:25 PM in HE Tubes Through Unheated AtticIn unconditioned space may very well cause that type of issue. May, or may not happen, and may only happen in certain scenarios. Point being it could freeze up, causing major issues. That being the furnace locks out, you have no heat, and the tech is in the attic trying to find thaw the blockage.
Usually the exhaust runs through a conditioned space before dumping outdoors thus no chance to freeze up as condensate runs back to the furnace.
Yes the extra money you pay for efficiency brings complexity to the appliance. But that being said the reason for efficiency gains is your wallet, and above all leaving fossil fuel for the next generations to use. Right?
@ December 5, 2013 9:17 PM in Ideal pex routing for underfloor install?And thinking radiant floor joists as a novel idea. I joist design BCI, TJI, with a pronounced top flange width to spread the heat in an aluminum transfer capping material .
@ December 5, 2013 7:02 PM in Navien ch 240,,When not if in the future HO1 will let us know of issues on this great product. I will bet not. New to the scene give it time they will ALL come where? looking for help,
Tired of he product push, and the debate. Like Chris said there is no Chris Angel in the boiler room. And proven formulas do not lie.
@ December 2, 2013 10:53 PM in Carbon Monoxide Issues - HELP!Needs to get a rep with your installer out there ASAP! Your installer should be taking care of this not you. Let alone have you trouble shoot, and try different things. I can't believe what I'm reading. buderus are you fellas reading this!
@ December 2, 2013 1:35 PM in Thoughts on dense packing plaster walls?So long as the boiler is in good shape. Then when you are ready for a new one heat loss won't need to be compensated for.
@ December 1, 2013 10:00 AM in two questionsProper pipe support, and isolation can cause noise .
Is this problem a recent development?
@ December 1, 2013 9:57 AM in two questionsCheck your system pressure, it should be at 15 psi. You should not be losing pressure unless there is a leak in the system, or it has excessive amounts of trapped air.
This is all who ever is checking on things needs to know. As long as the pressure gauge,reads 15 psi you don't need to add water.
Back to Bobs tip if the psi is low it can cause entrained air to come out of solution, and or circulator to cavitate. Causing noise.
Can you narrow it down to the blower motor, or noises piping?
@ December 1, 2013 9:32 AM in radiant and wood floorVery reason radiant floors running wild. Most hardwood manufactures cover their butts now
By claiming certain species are radiant friendly or not. Because they never know what some radiant knuckle heads will do.
Bottom line is there are a lot of things that can cause wood flooring to buckle, shrink, twist,etc. Humidity, proper acclimation before installation, fastening, poor subfloor, wood species, type of milling plain, or quarter sawn, etc. All plays a role.
Basically the narrower the flooring the better. Some species are just more dimensionally stable.
So with your future staple up just be sure you design with lowest possible average water temps. This can only happen if the load is low, by using heat transfer plates, and not having to push heat through a lot of existing floor layers.
@ December 1, 2013 9:21 AM in cut my bill by 70%,Thanks Rod for your helpSwitching from oil to NG was a 75%'reduction after efficiency, and btu content is accounted for.
That's one hell of a savings!
@ November 30, 2013 1:05 PM in Maximizing efficiency of a mod con questionlend themselves well. Taking into account system and boiler needs for flow rates piping direct can be actually a better marriage in certain cases.
@ November 30, 2013 11:57 AM in Maximizing efficiency of a mod con questionCarl,
Conclusion to me is that efficiency is an ever floating percentage in a heating cycle. With a mod/con boiler.
Depending on emitter type, you may start out at 98% and end up at 89% towards the end of a heat call. As return water temps climb as emitters warm up. Proving particularly true in low load parts of the heating season.
@ November 29, 2013 8:59 PM in Maximizing efficiency of a mod con questionSeems to be the obsession. Remember modulation is the real savings compared to a bang bang CI boiler. Getting it to condense as much as possible adds a couple of points to the efficiency.
As for why manufacturers don't throw in a variable speed pump who knows, may be up and coming offerings gotta save some surprise for next unveiling. The big V has been for awhile now.
Or it could be they already gave us a 40 mpg car, and we want to make it get 42. Or 350 horse, and we want to get 375 hp.
The betterment of technology is never ending, but some things are a bit anal for the ROI, or adding complexity to the system.
Technology is but a commodity anymore until the next great stride takes its place. Just like computers, t.v., and other electronic peripherals. What you bought this year will certainly be out dated next year or the year after.
But in the end if it's experimenting that fulfills your need to say you did all you can then by all means do so, and share your findings.
@ November 29, 2013 6:09 PM in two questionsNot afterburner. Basically the unit has a fan that creates its own draft for venting verses gravity vented via chimney.
Your pressure relief valve must have popped due to maybe a faulty. Pressure reducing valve slowly filling the system, or a faulty expansion tank, unless you mean the pressure reducing valve leaked.
If you are going to NOT have the water on to the boiler it should be equipped with a low water cut off switch. It should have one no matter what anyway. This locks the boiler out in the event the system loses such as you experienced, and will not allow the boiler to fire with out water...... Bad situation! Like explosive situation.
@ November 29, 2013 1:36 PM in Radiant LetdownMake sure what ever you are shooting has black tape on it or you will get false readings. Especially shiny objects such as copper piping.
Head loss is longest loop plus supply and return piping to the circ.
The concern for the mix valve is to allow the boiler to run higher temps yet allow the floor to receive cooler water. Otherwise the boiler will live a short life. Ci boilers need min 130 return temps to burn off acidic combustion condensate or it will eat away the ci heat exchanger. Unless it's been cleaned you may notice flakes in the pan under the burners this is a sign of condensation.
@ November 28, 2013 8:32 PM in Carbon Monoxide Issues - HELP!Sorry for the long form, but sometimes a link just does not cut it. Dangerous stuff!
@ November 28, 2013 1:09 PM in The Hydronic Formula and it's limitationsWhile sometimes painful to incorporate into an existing system it's out come is well worth it. I'm sure the Eco circs helped bunches also. Along with reverse return piping.
@ November 28, 2013 12:28 PM in Happy Thanksgivikahh !!!and yourzzz. A happy Thanks giving Mark, and everyone else. Yes a lot to be thankful for!
Where did you find that out?
@ November 27, 2013 10:27 AM in Radiant LetdownOne more variable to weed out, and that is if rooms have high rvalue floor coverings? That would increase response time and cause set point over shoot.
@ November 27, 2013 9:52 AM in Radiant LetdownJean you don't have a ci boiler that's why