Joined on January 19, 2012
Last Post on March 11, 2014
@ January 23, 2014 4:51 PM in What Do You Think? - New Product SmartTracHave you done a heat loss calculation?
Are you using a condensing boiler.
The manufacture has data on the output of the panel.at different temps. http://www.wattsradiant.com/support/literature/#/wattsradiant-products-hydronic-smarttrac/IOM-WR-SmartTrac
Non aluminum plate system will require higher water temps.This will give you lower efficiency with a condensing boiler.
What recommendations does the flooring manufacture have regarding water temps. Be sure not to void the flooring warrantee.
@ January 23, 2014 4:37 PM in OK, we bought the house... now what?If you use the calculator, An oil boiler at $3.50/gal is equal to a condensing propane boiler at $2.65/gal. You can always use an underground tank. Is there a chance natural gas will be available in the future? Propane can be converted to gas for huge savings.
Anyway, it sounds like you are going with oil. Since oil burners cannot safely run at temps lower than 140 degrees, the constant circulation approach is not as desirable.
With an oil setup, you should probably go with a 3 zone basic setup.
@ January 23, 2014 4:18 PM in Opinion on conversion from oil to natural gasI would not read too much into the utilities pricing. I have never been able to guess have much they will charge for new service.
In order for your rates to soar, the entire world supply would have change. No local supplier could do that.
At the moment heating oil costs 3 to 4 times more than NG.
Check out this link. www.eia.gov/neic/experts/heatcalc.xls
@ January 23, 2014 1:21 PM in Multi-stage heating thermostatI have done what you are attempting with low mass and high mass radiant panels.
This t-stat will let you set the differential at which the second stage fires. http://tekmarcontrols.com/products/zoning/557.html
Anther thought would be to use one of these to control the second boiler
I am not a steam guy, but I think I understand what you are trying to do.
Will the one boiler have enough capacity to provide an even distribution (ie steam to all radiators)?
@ January 23, 2014 8:56 AM in Radiant Heat in the NorthwestYou are wise to be considering this.
This article provides some good insight.
@ January 23, 2014 12:25 AM in HVAC calculationsWhy in the world are you guys talking 100k btu?
Do a heat loss calc, balance the system and move on.
The heat loss for a 1,500 square foot home is no where near 100k.
@ January 22, 2014 9:20 PM in Superstor contender piping ?The right thing to do would be to repipe with 1".
20 minutes is a pretty short timeout. A couple showers simultaneously would cause a shortage of DHW.
I think 40 minutes would be more appropriate.
@ January 22, 2014 8:25 PM in Gateway + Aerco + Caleffi = nice job.The pic did not come through.
@ January 22, 2014 8:22 PM in Superstor contender piping ?The boiler at full output should make 2.75 gallons per minute at a delta t of 68.
The boiler should be downfiring rather than cycling off. It might be worth a call to tech support.
@ January 22, 2014 7:27 PM in securityDid you have your email hacked.
Mine was hacked a little while back.It was not connected to this site.My IT guy said I had a weak password and that a computer program had guessed it.
I am under the impression that you have to download an executable file to be "hacked" at that level. I have never downloaded anything but jpegs and pdfs from this site.
I don't think it is possible to be hacked by just visiting a web site.
@ January 22, 2014 6:34 PM in HVAC calculationsSlant fin makes a good heat loss calc.
I doubt your present furnace is undersized 1500 is a pretty small load. Do you have uninsulated ducts in an attic?
@ January 22, 2014 6:25 PM in Superstor contender piping ?Gordy,
You are correct about the 1". To take the full output of the boiler at acceptable flow rates you would need 1".
That really does not explain the performance. With 3/4"pipe and an appropriate circulator the tank should be able to take 60,000 BTU at 30 degree delta t. The boiler would not cycle at all under those conditions.
@ January 22, 2014 6:04 PM in HVAC calculationsAny heat loss program will do the trick.
Do you have a duct sizing or balancing issue?
@ January 22, 2014 5:51 PM in alliance running coldBoth the alpine and the burnham have high head losses. Is the circulator sized correctly? Is it piped with DHW priority?
What is the output of the boiler during a dhw call? What is the delta t?
Could the coil be calcified?
@ January 22, 2014 4:09 PM in Superstor contender piping ?Is your boiler firing at 100% or is it less?
I have piped the prestige to amtrol heater that cannot match the required flow or full output of the boiler. The boiler performed fine but would would not go to full fire.
If you are at 100% with a 30 degree delta you are still moving the energy.
@ January 22, 2014 12:59 PM in High thermal mass control strategies?Take a look at the tekmar TN4(or TN2) controls.
It sounds like you need a combination of outdoor and indoor feedback. The tekmar will learn from past indoor overshoot and anticipate to some degree.
@ January 22, 2014 12:05 PM in Drain boiler to replace boiler drain?You do understand that if that doesn't work you will be in the exact same predicament you would be in if you followed my advise (which you mocked).
There is nothing funner to watch than folks in the north east getting fired up about the weather. Most storms that constitute a federal emergency in the northeast would not cancel school in the west.
@ January 22, 2014 11:32 AM in Mixing Valve Noise w/Video & AudioIce,
This is the valve he has http://www.powerscontrols.com/pages/product_full.asp?pid=6370
Everything is going to be OK.
@ January 22, 2014 11:25 AM in Theory behind parallel hydronic heatingIt sounds like you have a monoflow system. Each tee is specially designed to divert some of the water through the radiator.
You should be able to find some free articles in the resources section.
Dan's books are also a great source of info of you are looking for a more thorough explanation.
@ January 22, 2014 11:18 AM in Mixing Valve Noise w/Video & AudioIt looks likes you have an abundance of check valves and where is the expansion tank?
Are both of the valves returning from the recirc pump open? It needs to have free flow to either the hot or cold side of the mixer.
It looks like the tempering valve is laying on it's back in the middle of the picture, directly below the gauge.
@ January 22, 2014 10:56 AM in Mixing Valve Noise w/Video & AudioWhen does the noise occur? Does it go away if you turn off the recirc pump?
@ January 22, 2014 10:50 AM in Does this Graph showCan you just post the graph and a full explanation.
Your link requires a login.