Joined on January 19, 2012
Last Post on December 5, 2013
@ December 27, 2012 10:02 PM in Triangle Tube Solo 110 and Smart 80I just did one of these using tekmar to control it all.The 2 boilers were tied together using a common header. The dhw outlet on the boiler was capped This is the primary loop. The dhw, heating and snowmelt were all on parallel secondary circuits. The tekmar controlled the priorities. I think the triimax can do the same. How are you piped?
@ December 27, 2012 9:59 PM in Triangle Tube Solo 110 and Smart 80I just did one of these using tekmar to control it all.The 2 boilers were tied together using a common header. The dhw outlet on the boiler was capped This is the primary loop. The dhw, heating and snowmelt were all on parallel secondary circuits. The tekmar controlled the priorities. I think the triimax can do the same. How are you piped?
@ December 26, 2012 11:35 AM in Log homesI see a ton of log homes. The good ones seem to be either fully custom homes with an unlimited budget and a great builder or a simple kiln dried "D style" kit. The custom jobs use SIP panel roofs meticulous chinking techniques and plumbing. heating and electrical contractors that really understand how to deal with the movement that happens in a log home. The simple kits that are kiln dried don't move much and tend to present less issues.
The Bad and Ugly are far too common. I would be reluctant to use the word "manufacture" to describe the folks that put these together. Typically it is a guy with a crane and a few chainsaws. The trades tend to be low bidders that help get the pricepoint where it needs to be. There is no heatloss calc or engineering on most of these. The r values provided are pure fiction. Problems with crushed wires, broken pipes, and settling are the norm.
I would recommend doing your own research on the r-values based on the species and thickness of the walls. The infiltration rate may be best determined with a blower door test.
Best of luck,
@ December 26, 2012 11:18 AM in how do I know how many btus a pipe will carry?He is trying to size a gas line.
@ December 26, 2012 11:16 AM in AquaPex in closed loopYes, you have a problem. Normally you can install a heat exchanger and non ferrous circulators on the boiler side. With your iron rads, that won't work. Their are chemical additives you could try but the best plan is to remove the tubing.
@ December 26, 2012 9:42 AM in Hydronic Air DesignI am glad to hear your buderus is running well. That model can be a challenge.
Check out this article from one of the industry greats http://www.radiantandhydronics.com/Articles/Glitch_and_Fix/BNP_GUID_9-5-2006_A_10000000000001216751
You slab should absolutely be mixed. It should be done in a way that limits the btu's it will take, particularly when it first calls for heat. I would look to Tekmar controls for a solution.
@ December 25, 2012 1:45 PM in IpadThat's for the responses.I am still working through the apps.
It turns out the way to do the kids DVD's is to buy ripping software. Winx works for most.
@ December 25, 2012 1:41 PM in how do I know how many btus a pipe will carry?Is about hot water in a pipe. You question is about gas?
I would suggest starting a new post. You will need a description of what the pipe sizes and lengths are as well as the btu sizes of all the appliances. The system gas pressure would also be needed.
@ December 23, 2012 10:42 PM in IpadHi all,
Just got a new Ipad. What are your favorite heating apps?
How do convert dvd's you own to play on it?
@ December 23, 2012 6:26 PM in Adding honeywell ra889a to system with external transformerI don't think that will work. The t-stat is a single pole switch. What you are doing is running parallel loads and power supplies through a single pole switch.
I believe the "C" on the relay is intended for 3 wire-t stats like some of the programmable ones out there.
@ December 23, 2012 12:47 PM in Adding honeywell ra889a to system with external transformerI used to seriously over think electrical circuits. I picked up a couple of Carol Fey books and it all started making sense. The thing she says that I repeat to myself when I get confused, is that everything in a simple electric circuit is either a power supply, a switch or a load. Your boiler TT is a power supply on one side. It is looking for a switch to connect it to the load on the other side. In other words it doesn't matter which way you connect it. The relay is just a switch.
Thanks for the link.
@ December 23, 2012 9:38 AM in Adding honeywell ra889a to system with external transformerI don't see any issues on the wiring side.
What program are you drawing with?
@ December 23, 2012 9:27 AM in Electric baseboard vs propane fireplacesIt depends on you fuel rates and the efficiency of the heaters. Check this out www.eia.gov/neic/experts/heatcalc.xls
Your electrical efficiency should be about 99% The propane maybe 60%?
Plug in you local rates and there it is.
@ December 23, 2012 9:15 AM in Carrying capacity of copper pipeOk,
So this is more of a theoretical conversation? If you do not know the approximate length and output of the emitters on the loop how would you know the target GPM? Maybe you are pumping to much water? I think you need to figure out what your heat loss for the rooms being heated and compare that number to the available radiation in each room. It is also important to note which emitters are on the supply side of the loop and which are on the return. This will tell you what temp and how much water you need to deliver.
Just because some knucklehead oversized the boiler, that doesn't mean you need to overheat the house, wear out the pipes, and spend a bunch of money on circulators.
If you needed to go to the store for a gallon of milk and the only car in the driveway was a dumptruck, would you have to fill it with dirt for the trip? No, you would just drive it and hope to find a parking space.
@ December 22, 2012 10:31 PM in Carrying capacity of copper pipeI have been reading this post and am confused. How many feet of actual baseboard do you have? Is it 3/4" single pipe (one pipe running through the rad)?
@ December 22, 2012 6:09 PM in Adding honeywell ra889a to system with external transformerYup that's it.
I would wire all the controls and transformers to the same 120v circuit. It might save someone a headache on modifications down the road.
@ December 22, 2012 5:05 PM in Piping QuestionThe pipe sizing of the primary and secondary loops should be based on the gpm requirements of the loops.The gpm needed is based on the number of btu's being transported and designed delta t. The conversion factor link at the top has some good guidelines.
In the system you describe your header is likely sized as a "low head loss" header. This insures even distribution across the zones. I am thinking your 112k boiler will work just fine with 1" piping although some manufacturers will call for 1 1/4" Check your manual to be sure.
@ December 22, 2012 4:36 PM in Adding honeywell ra889a to system with external transformerI think you're all set with the wiring of the transformer to the t-stats.
If you take the end switches from the 2 zone valves off the boiler and connect them to R(T) and W(T), this will enable the pump relay. You have 120v power wired to COM and the pump wired to N.O.
When this happens the relay will close terminals X1 and X2. If you connect these to the boiler TT terminals you are all set.
@ December 21, 2012 8:10 AM in Wax on, wax off, wax on...I am thinking the short flue combined with a vent hood rather than a barometric damper is giving you an inadequate draft. This makes it look like you have good efficiency. A bit rich for atmospheric. The co is .the red flag. When you block the hood the draft improves and it turns out you are to lean. Just add about 20' of insulated flue and you should be all set.
First cup of coffee.
It looks like the fence could use some paint...
@ December 19, 2012 12:25 AM in Natural Gas Tankless Heater and plumbingYou are correct to be suspicious. What your plumber is doing is running an undersized line at high pressure. Then he is regulating it back down at the appliance. If you have the btu rating of the appliances and the length of the runs, someone may be willing to help you calc this. In my mind this is crazy. Opinions may vary. 27.7 inches of wc = 1psi
@ December 18, 2012 8:54 AM in Finding Private MessagesWhen someone clicks "contact user" on your name, You will get an e-mail saying "someone on the wall...." You then have the option to send them a message from your own e-mail account.
@ December 18, 2012 8:47 AM in where to put electric mat radiant heat in kitchenI agree with Gordy. What is the primary heat? In most areas electricity is not an affordable way to heat a space.
If it is a supplemental heat source, I would do the areas where you walk. I would also consider a slab sensor and a timer. The goal in this case is to make the floor feel warm during certain times of the day
If you intend to heat the house, you really need to do a heat loss calculation on the room and size your heat accordingly.