Joined on January 19, 2012
Last Post on March 7, 2014
@ January 27, 2014 4:27 PM in cracked boiler due to pipe leakThe boiler is a Weil McLain.
Not sure what Dunkirk has to do with it?
@ January 27, 2014 4:21 PM in New boiler, Insufficent heatAre you able to determine which loops service the under heated area?
Can you confirm the flow rate and supply/ return delta t on those loops specifically?
Once you are positive the btu's are being delivered, it then makes sense to talk insulation.
If your issue is inadequate flow, all the insulation in the world will not fix it.
@ January 27, 2014 4:16 PM in Retrofitting old home with radiant heat: suspended slab or panelsI think your concrete option is pretty good. The thermal mass is usually easily managed using an accurate outdoor reset curve. Unless you have a lot of solar gain, you should be fine.
I also think radiant ceilings are worth a look. They eliminate the potential for many problems. Overheating and cracking of wood floor, insufficient heating due to carpet and furniture placement and solar overshoot, to name just a few.
This manual provides a great resource. http://www.uponor-usa.com/~/media/Extranet/Files/CDAM/CDAM_Manual_7thEd_0711_Cover.aspx?sc_lang=en&version=072920110236
@ January 27, 2014 12:07 AM in New Thermostat 3 Wire Hot Water Boiler SystemThat is kind of an odd t-stat paired with those zone valves.
In the mechanical room, where do the 3 wires go? Normally one would go to a transformer and another to one of the yellow wires on the zone valve. Where does the third wire go?
What model is the new t-stat?
@ January 25, 2014 2:19 PM in cracked boiler due to pipe leakI would speak with your local wholesaler. It never hurts to go in a speak to one of the senior salesmen. They should know which contractors you should be looking at. I would go in, not just call. You don't want a recommendation from the rookie counter guy.
Dan's books are entertaining and highly informative. They will help you pick a contractor now and make minor repairs down the road.
I do not see a "pick up factor" in your calculations.
Best of luck,
@ January 25, 2014 10:52 AM in thermostat-aquastatI agree with Steve. Everything sounds normal except the 130 degrees.
You really need to double check it. 130 degree boiler temps also mean it is condensing, which is bad for your boiler.
@ January 24, 2014 10:27 PM in Split loop question, zone always seems hot, no sure what to do with valveIt sound like you are experiencing some sort of ghosting. It may have nothing to do with having a split zone.
Could you post some pictures or a drawing?
@ January 24, 2014 8:53 PM in Problem with fuse socket on Buderus GB142 UBA3You have likely already figured this out. Click "contact this user" under their name
@ January 24, 2014 6:08 PM in Repair part for Buderus GB142 UBA 3Larry,
Either way this sounds like either a superglue repair or a call to Buderus.
You could try posting this on the main wall. I am sure you are not the first person to have this problem. Sometimes these subcategories get overlooked.
@ January 24, 2014 5:50 PM in Superstor contender piping ?John Siegenthaler always specifies the boiler supply to the top and return on the bottom of the indirect. It has something to do with counterflow, I honestly can't remember the reasoning at the moment. When in doubt, do it Siggy's way.
Have you checked the positioning of the sensor in the tank?
@ January 24, 2014 8:57 AM in Repair part for Buderus GB142 UBA 3It looks like there is a part number for that in the manual. Why not call your local dealer and order one up.
It looks like part number 38345
@ January 24, 2014 12:29 AM in OK, we bought the house... now what?Harvey,
You must have gone to the AHR is New York. That is a great looking product.
I would do it exactly like Harvey said.
@ January 23, 2014 8:57 PM in Buderus won't run on generatorWhat in the world does this have to do with the original post?
If you have a question about buderous parts, make a new post.
It would help if you gave the model of the boiler and the area of the country you are in.
@ January 23, 2014 5:50 PM in Boiler return too hot from indirect DHW tank to allow condensing efficiency?Mod/con boiler have a ton of adjustment that will help with efficiency. If you use very little hot water you can keep the margins very close.
I am not sure about the lochinvar, but the triangle tube has an anti legionella feature where it will raise the tank temperature at a set time to kill bacteria and then go back to a lower setpoint. You get the best of both worlds.
Check out this presentation on condensing boilers www.fcxalaska.com/PDFs/AshraeCondensingTechnology.pdf
@ January 23, 2014 5:42 PM in HVAC calculationsWhy are you asking about heat loss calculators if you are just going to WAG it?
I mean as long as you are going to throw 62BTU/Ft at it why not put in a 200k unit just to be sure. Be sure to round up just in case.
@ January 23, 2014 5:07 PM in OK, we bought the house... now what?Jason,
You certainly can mix the temp down for the radiators. Keep in mind you will not save energy like with a condensing boiler. If you run the radiators at lower temps they will emit less energy. Since the oil boiler cannot modulate, it will short cycle more intensely at the lower radiator temp. The system you are suggesting would work well with a properly sized buffer tank.An ECM circ would also be a good idea.
@ 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.