Joined on December 29, 2008
Last Post on February 25, 2014
@ December 8, 2009 7:15 PM in Pex TubingSprinter I don't know if there is a best pex. I feel the tubing itself no matter what brand will out live all of us.
There are 3 methods in which pex is made. The method classifies the tubings designation as PEX-A, PEX-B or PEX-C. This doesn't mean A is better than B or B is better than C.
I tend not to get caught up in the fitting so much with radiant. My feeling is that you should have no fittings in your loops and they should leave and arrive to the manifold clean. Most manifolds also use a compression style fitting to attach the tubing to the manifold. I prefer PEX-A as it gives me the ability to get a kink out without having to cut a coupling in and tends to be more flexible and easier to pull.
@ December 7, 2009 5:33 PM in Radiant ControlsBoiler doing. Domestic Hot Water? Any baseboard zones? How is the radiant attached to the subfloor? Also, Burnham just recently announced a new control strategy for this boiler. Does the boiler that you plan on installing have the new control package or the old?
@ December 7, 2009 5:27 PM in Convert apt. bldg to HW?And I like his approach. Panel rads are not as expensive as most think. They will also cut down on some labor and you may be able to run 3/8" pex to them. You would also have more control as your tenants wouldn't have the luxory of turning up a t-stat on you. They will also use less wall space and give you the benefit of both convection and radiant heat. They work real well with a mod/con if that is the direction you would like to go. Check out [url=http://www.hydronicalternatives.com]www.hydronicalternatives.com there is a load of info on low temperature hydronics and panel type radiators.
As for mod/cons. Stay away from alum blocks and your choice should be based on which contractor you choose and what he is most comfortable with. Yes Viessmann is my choice for mod/con but others out there will do the job just fine.
@ December 6, 2009 3:51 PM in Grundfos and TacoI sell very little Taco Pumps. Most use Grundfos. I have carts for the 00's and if you want to buy one I would sell it to you. Most guys change out the complete pump. I think they choose to change it out because they feel more comfortable changing out the entire pump.
To anwser your Viessmann questions. I'll sell you what ever line of boiler you want. I have Triangle, Munchkin, Burnham Apline, Peerless Pure Fire, etc. The reason I sell more Viessmann. I don't have to worry about selling on price and my customers love if for the fact that they actually have a product that they can sell and make a few extra bucks versus always selling on price. Every Supply house in a 20 mile radius sells every line except for Viessmann. Why do you think that is? Wouldn't have anything to do with being order takers would it? If you opened an account with me yes my goal is to provided you with education and information on products that will help you grow your business and to support you no matter what boiler line you sell. Do you think I just have customers that sell Viessmann? Sorry, I don't and they get the same support and effort from me. As for referrals, I probably give atleast 6 or so a week to my customers. We have homeowners that call us every day looking for good contractors. Shame that you wouldn't want to be a part of this type of team.
@ December 6, 2009 11:50 AM in How much effic. is lost due to short cyclingIs to change out the boiler. If this is nat gas are there any local utility rebates offerred? A mod/con would be subject to the 1500 dollar tax credit. Here the local utility gives an additional 1,000 dollar rebate back to the consumer. Those 2 alone are an a immediate payback. Plus the roughly 35% cut in size of the boiler. Safe to say payback could be as little as 2 yrs.
@ December 6, 2009 11:36 AM in Why Homeowners Must Have Yearly ServiceThis article is just another reason why yearly inspections and cleanings are a must. This artilce is in this mornings paper.
@ December 6, 2009 8:38 AM in Grundfos and Tacoa replacement cart of a 00 lately. Pretty close the price of the enitre pump and most guys change the pump out anyway. Gundfos should be a service mans goto pump. Put a 15-58 and a 26-99 on the truck. You just covered yourself for just about any job you may come across in the middle of the night.
@ December 5, 2009 5:04 PM in What's the sq.ft. EDR for modern rads?with your design and the house is comfortable then you are ok. The numbers get you in the ballpark but an individuals comfort is a homerun. I'm sure you will keep tweaking throught the season to get it where you want. After that you should never have to touch it again.
@ December 5, 2009 2:28 PM in Taco Zone Valve ControllersI don't mean to sound like a jerk but the wire diagram is in glued to the inside of the cover. Page 31 of attached Taco Wiring Guide will give it to you also.
@ December 5, 2009 9:25 AM in 2 zone, prim/sec piping, one zone must have constant circulation.A piping schematic of what you are trying to do? Even just a penciled drawing that you could scan and post.
@ December 5, 2009 9:15 AM in How much effic. is lost due to short cyclingSo your roughly 35% oversized. Let's start with that savings alone..Is the flowrate of 6gpm giving 75k btus both a/h's or each? How about running a 30 degree delta t and look at the ratings of that a/h at a lower flow rate. A mod/con would be a good choice for just the fact that no stand by or stack loss as you are seeing here. What you make you use. What will those a/h's put out at 165 degree water at design? This would be your average water temp using a 180 supply temp and a 150 return temp.
@ December 4, 2009 6:45 PM in boiler retrofit questionThe correct anwser is to do a heat loss. Who's to say the baseboard was sized to a heat loss from its birth..
@ December 2, 2009 6:40 PM in Fin-Tube BaseboardDoes anyone have or know where I can find the formula that is used to calculate btu output for fin-tube baseboard. Baseboard charts give you the average ratings at 150, 160, 170, 180. None give you the 155, 165,175 average ratings.
Example. Suntemp 700 Series at a water temp of 170 degrees and a flow rate of 2gpm gives you 514 btus a foot and at a water temp of 160 degrees with the same flow rate 442 btu's per foot. What will it give me with a 165 degree water temp at the same flow rate of 2GPM?
@ December 2, 2009 6:14 PM in Looking ForI happen to stumble on them earlier this afternoon. They do do one. Not a bad price either. Thanks again.
@ December 2, 2009 5:44 PM in burner settingsRob's post above says alot in a short reply. Three years ago I had an oil company that was interested in the Viessmann Vitorond 100 Series Oil-Boiler. They wanted to be different and thought it was a great competitor to the Buderus. They installed 25 plus boilers that season. Never a call back, never a problem and 1st cleanings were a breeze and 3yrs later still no problems and cleaning are a breeze. After those boilers were installed through a complete heating season they decided not to install them anymore. Why? The average customer was saving between 200 and 300 gallons of oil a year compared to the previous seasons. They knew this because they had always been oil customers and they had their prior oil usage.
I would get a second opinion in your case. Did the oil guy do a heat loss to come up with his "you won't be able to keep the place warm when it gets cold" theory? Call a couple of plumbing and heating supply houses in your area and get a recommendation from them of some of their customers that are really good "hydronic guys." Call them, let them what you are looking and what you are trying to accomplish. A good hydronic guy will come up with a solution for you. Not all oil companies but most just service burners a hydronic guy services hydronic systems.
You (not most of us) may be surprised to see that the boilers are oversized and there are soluntions that can be done to the system itself to make it more efficient. Best of luck.
@ December 2, 2009 2:33 PM in What's the sq.ft. EDR for modern rads?Don't know if this may help you a little more.
@ December 2, 2009 12:26 PM in Looking ForA commerical Oil-Fired Furnace that is capable of pushing enough CFM to do 15 Tons of cooling (6000 CFM)? Anyone out there know of any? Thanks.
@ December 2, 2009 6:21 AM in 2 zone, prim/sec piping, one zone must have constant circulation.By piping pri/sec you have already created hydronic separation. Zone 1 pump has no influence on zone 2 pump. The only problem with primary/sec is that you must take into consideration that the water temp entering zone 2 is going to be less than zone ones when both zones are callling.
For instance, lets say your system needs 40,000 btus and 4 gpm. Zone 1's load is 25,000 btu's at 2.5gpm and zone 2 15,000 at 1.5 gpm. Your supply water temp is 180 out of the boiler.
With both zones calling this is what you need to take into condsideration.
Zone 1 will be supplied with 180 degree water at 2.5 GPM. Giving you an approx residential baseboard output of 581 btus a foot
Zone 2 will be supplied with only 167 degree water at 1.5GPM. Giving you an aprprox residential baseboard output of only 500 btus a foot.
Make sure you do a heat loss and that you have enough baseboard for zone 2.
@ December 1, 2009 10:37 AM in What's the sq.ft. EDR for modern rads?Is a correction chart but its for another companies panel rads that I deal with. Should get you in the ballpark.
@ November 30, 2009 7:23 PM in Now I see why the Grundfos person posted the video on You Tube.........A pump is sized to deliver GPM at a given head. A pump doesn't care what temp it is outside. You stated that the pump would be ok if it had to be constant. If it can overcome constant it can overcome any zone in the system.
I belive from your early post you stated that the boiler is 175,000 btus. That's fine, but what is the heat loss of the structure that you are trying to overcome? What is the total length in feet of your longest zone? For example, you want to deliver 150,000 btus at a 20 degree delta-t. That's 15GPM, let's say your longest zone length is 125 feet. That gives you a head of approx 7.5 ft head. The 0012VDT would be a better choice. Its exactly what you state. A flatter head pump.
I attached the PDF file on the pump.
@ November 30, 2009 6:35 AM in Now I see why the Grundfos person posted the video on You Tube.........the pumps to big. Why the 13 and not the 8?
@ November 28, 2009 7:01 AM in W-M indirectWeil doesn't make the indirect. It is made for them by Triangle Tube. An indirect is pretty much an indirect. Some may give you a little bit better recovery than others but all the warranties are pretty much the same. My advice on this would be to make sure you are adding a priority zone control in addition to the indirect.