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Chris

Chris

Joined on December 29, 2008

Last Post on July 8, 2014

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Was 9/11 News

@ December 20, 2009 4:22 PM in Misguided person

To me that wasn't news. We all lived every second of it. It was a historic time in our lives. An event that will never be forgotten. To me  news is something that we all are not aware of. The biggest news of the decade to me was Madoff. The impact of what he did had an impact on more lives ten fold. It had such an impact on our economy that it's effect is still being felt today. Yes, the 9/11 victims families will never forget and neither will I but my vote goes to the Madoff scam.

Terry, KBH

@ December 20, 2009 3:21 PM in Taco VDT Pump

Try this to get a hold of John johbar@taco-hvac.com I recevied an e-mail from his this morning concerning this issue. They are aware of a problem and believe they have it fixed. I'm sure he would like to know the application and would want the pump back

Welcome to the Site

@ December 20, 2009 3:13 PM in New to boilers - what do I do?

Normal operation would not have the water set to 140 degrees. This would mean that you return water temp would be 120 degrees which is not good for a cast iron boiler. Minimum return temp should be 140 not the supply temp. As far as your feed goes. We do not have to feed hot water boilers any longer. The feed valves today make sure that the system maintains the 12PSI it is suppose to be operating at automatically. Check the brand and model number of that feed valve and make sure it is a Watts S1156 or B&G FB38. These are the most common.

Terry

@ December 20, 2009 1:46 PM in Taco VDT Pump

Did you send the pump back. I recevied an e-mail from John Barba and I'm sure he would like to hear the application. You should give him a call at Taco or send him an e-mail via Taco's site. He is interested in what the problem is.

Here's Taco Wiring Guide

@ December 20, 2009 11:12 AM in Modine and Taco

The attached wiring guide has what you are looking for.

Noticed a Note on that schematic

@ December 20, 2009 10:47 AM in Control ZV - What Tells the Boiler to Come On

States that you must maintain 100 gallons per hr flow rate? Equates to minimum flow rate of 1.7 GPM. If any of those zones are less than 17,000 btus (based on a a 20 degree delta-t) I would make sure I use a low loss header/hydro seperator. I'm not a fan of primary/secondary with a mod con.

You may want to consider

@ December 20, 2009 10:35 AM in adding baseboard

Using a modulating mixing valve that gives you outdoor reset. Viessmann makes a nice control for this and you could also add indoor feedback. You could do the same with Tekmar controls.  You could really finetune. Of course it all depends on budget. 

Leaving Out that Insulation

@ December 20, 2009 10:24 AM in snow melt

Hurt you alot. Could have done it had you insulated. Like the others state be real careful. Your oil or gas company is going to be you new best friend once you start firing that driveway up. Your wife will love you though. You just gave here some turf conditioning along the sides of that driveway. She can grow some pretty flowers all year round now.

Rule of Thumb

@ December 20, 2009 7:58 AM in adding baseboard

The basic rule of thumb for savings. For every 3 degrees I can run my system under 180 degree water I can save 1 percent of fuel. If I design properly and my boiler supply water temp max is 140 degrees that is a 12% fuel savings if that was constant. Now think about how many heating days your at design. Maybe 5 if your lucky in my area. In the system in my previous post  I'm betting on an average water temp of 125 or so. That equates to almost a 20% savings. Plus I'm condensing the whole season so my efficiency rating stays alot closer to that 95% rating versus a boiler designed for 180 or so. At 180 your really only running at around 87 to 90 percent. It boils down to system efficiency. Everyone gets caught up in AFUE. I feel that system efficiency is more important. It's what you do with the energy produced by your fuel dollars that counts.

Dave and Bill

@ December 20, 2009 7:29 AM in Taco VDT Pump

The first pump already went back to Taco. The second will get back to them this week. They are very interested to in trying to find the cause. I will let you guys know what I find out.

Baseboard Ouput

@ December 20, 2009 7:01 AM in adding baseboard

Is based on a combination of  flowrate and water temp. Providing you do a heat loss of the home and break out the loss of each zone you can run what ever temp you want as long as the board is sized correctly. I posted about a job the other day, Fin tube board with mod-con. Temp outside was 27 degrees, the boiler temp 108 and a system supply water temp of 98 through the board and the house was 70 in all 5 zones.  Thursday night here is was 7 degrees. Boiler temp was 135 and system supply temp 128. It all comes down to design.  There is a de-rating chart that Meztek, the makers of SunTemp, Embassy and other boards gave me. It' will give you the factors to calculate the output of board all the way down to 100 degree water at a 1gpm flow rate. You then use the flow rate correction factors to get your output.

If you are deciding to try this. I would also use a high output board. It will give you much more flexability in water temps.

Cast Iron and Fin-Tube

@ December 19, 2009 6:44 PM in Using a Mod-Con with Cast Iron Radiators and Finned Tube Radiation

I recently designed a system as this for one of my contractors. We used a Viessmann Vitodens 200. The boiler control can run 2 heating curves plus domestic hot water. We used the boilers reset for the fin tube curve and a motorized modulating 3-way mixing valve that plugs into the control  for a second heating curve for the cast iron zones. We zoned pumps. I would rather use a low loss header/hydro seperator for mod-cons vs primary/secondary. This eliminates the temperature drop between zones when multiple zones call and it promotes condensing. Primary/Secondary is great when you have a cast iron boiler and need some boiler protection. 

Make sure you do a heat loss. If you decided to primary/secondary its a good idea to figure out each zones loss and make sure that the amount of radiation can cover the loss when multiple zones are open. You will with primary/seconday have a supply water temp difference in each zone when multiple zones are calling.

I hope not

@ December 19, 2009 6:26 PM in Do water baseboard heat systems ever share hot water with the tap hot water?

If you turn on the hot water tap without cold water you would get instantly burnt. What type of boiler do you have? Does the boiler have a hot water coil in it? Take a few pics and post.

Comment on the Article Woman Pays Sout Jersey Gas Bills

@ December 19, 2009 4:30 PM in Comment on the Article Woman Pays Sout Jersey Gas Bills

I would be curious to know what brand of heating system this was. Back in the day and in times of no heat we walk out to the warehouse and strip a piece of equipment for the part and put it back in when it came in. Matter of fact did this exact same thing a week ago for someone that has his electrician fry his boiler controls and sensors. No heat means you do what is necessary to get the customer heat. Who cares if its a warranty issue. There is also a thing called UPS Next Day Air Saturday,

Curious also know if a manufacture sells direct to this utility company or if they have to buy from the same supply house as the rest of the trade do.

The Zone Control

@ December 19, 2009 3:24 PM in Control ZV - What Tells the Boiler to Come On

If your plan is to zone all zone valves then buy a Taco ZVC-406 or equiv. Wire the zone valves and therm per the wiring diagram and take the end switch from the zone control to RT on the boiler.

Thank You

@ December 19, 2009 10:12 AM in Mark Eatherton

for taking the time to respond. Look forward to reading the link you provided. We have the same issue here. No liciensing by the state yet certain municipalites require their own. Electrical contractors were just being required to obtain their license this past July in Orange County NY looks like they are attempting to hit our trade next. Thanks again and happy holidays to you and your family.

Mark Eatherton

@ December 18, 2009 7:19 PM in Mark Eatherton

While surfing around I came across an article you wrote for Contractor Mag back i Jan 2001, Code of standards is needed, and now 

[url=http://contractormag.com/hydronics/cm_column_49/]http://contractormag.com/hydronics/cm_column_49/ 

 Where does the RPA and the code stand 9 years later? You wrote a very nice article and I couldn't agree with it more. Just curious to see if it fell flat on its face or has there been any progress. Happy holidays..

 

Taco VDT Pump

@ December 18, 2009 6:58 PM in Taco VDT Pump

Has anyone used this pump as their system pump in mod/con application where you were zoning with zone valves? I had a couple of my top notch contractors install them in the last month and both pumps were making so much noise. Both jobs were in their houses. They were testing them out prior to making a decision on putting them in their customers homes.

Both were installed on Vitodens 200's using Low Loss Headers not primary secondary. Once we changed them out and used Grundfos Alpha, noise gone and running smooth. I'm thinking the Delta P pump is more reactive to the consistent flow and water temp changes in the system vs the Delta-T pump. Anyone have a theory or some thought?

Floor R-Value

@ December 18, 2009 6:19 PM in radiant heat through three layers of flooring

Floor R-value is going to be in the 2.5 area. Typical sub and hardwood is 1.68.  I would make sure someone does a radiant heat loss and design before you  decided to do this. You may find depending on sqft of floor that you may not be able to heat the room. Some type of joist trak plates is a must and you may even consider some radiant wall to keep your water temps down. Your going to have a high water temp at design conditions. You may not be able to take advantage of the full range of the mod/con without some supplemental heat.

You need

@ December 18, 2009 3:00 PM in sediment

the magical potion that Weil is now selling with all their boilers. The Weil service bulletin sent out in September is attached.

140 degrees

@ December 18, 2009 2:55 PM in Outdoor reset, and how low a temp can I operate a Burnham V8 cast iron oil boiler without condensation problems?

Is minimum return water temp back to the boiler. Once you drop below that you take the chance of cracking a block and once below 135 the chimmney will begin to condense another no no.

Warm Floors

@ December 18, 2009 8:55 AM in Wouldn't Believe It If I Hadn't Seen It

Would have been nice to have some radiant but retro-fit job. My customer really wanted to see what he could do with the boiler on retrofit baseboard jobs. He does alot of replacment boilers in exisiting homes. The goal is to make the boiler  as affordable as possible with the best payback. He using his own house as a test case.