Heating Help

Thanks

@ May 16, 2013 8:45 AM in zone valve question

I'll remember that for next time. I've already bought a Belimo with a cv of 57 for a 2" zone valve. Since my gpm is 40 I'm good with that.

I was thinking

@ May 15, 2013 10:03 PM in zone valve question

Of using the large Wilo for the 15 and 40 and using a smaller circ for the single digit zones. I'll look at the pump curves tomorrow.

Still need an answer. why circs instead of zone valves

@ May 15, 2013 7:08 PM in zone valve question

??????????

?

@ May 15, 2013 1:24 PM in zone valve question

What are CCV's?  My gpm's are; 40, 15, 8, 8, 5, and 5.

6 zone valves

@ May 15, 2013 1:07 PM in zone valve question

Ranging from 1" to 2 " Why break it up into multiple circs. One oughta work. Or am I missing something? BTW I found Belimo had the 2" zone valve I needed. Thatnks for the suggestions.

I was

@ May 11, 2013 10:53 PM in zone valve question

Planning on using a Wilo Stratos 2x3 x35 on six zones. the largest needing 35 to 40 gpm.

What if

@ May 10, 2013 2:17 PM in zone valve question

I used two 1-1/4 zone valves and teed them together downstream?

zone valve question

@ May 10, 2013 8:24 AM in zone valve question

We are installing a large (for us) boiler system of 1.2 million btu's. We have 6 zones of varying sizes. I usually use Caleffi Zone valves but their largest zone valve is 1-1/4" with a cv of 7.5. My biggest zone is 2." Should I reduce down to the zone valve or find another manufacturer that makes 2" zone valves? What problems could I be facing?

evac tube drainback system

@ March 12, 2013 2:08 PM in evac tube drainback system

5 years back when I installed my solar hot water you could not install a drain back system when using ecauated tubes. The evacuated tubes could be damaged if they sat out in the sun without the heat being taken away from them. Recently someone told me they have new tubes that can be used with drain back solar systems. Hvae any of you used them or know of them? Do you have any links that would help me find them? Thank you for any help you can give me.

Radiant Tables in Greenhouses

@ March 7, 2013 9:08 AM in Radiant Tables in Greenhouses

I looked at a large commercial greenhouse a few weeks ago that had radiant floors everywhere that most of the plants would sit on to keep their roots warm. But they also ran hot water through pipes where hanging planters hung and used them for secondary heat when the radiant floor wasnt enough. I know most of the park greenhouses where I work, have tables where the plants sit. Less bending over I'm guessing. I've been thinking. What if we made these tables radiant benches. I could use warmboard or climate panel. I could also run tubing on the table top and encase it in mortar or some otherproduct of thermal mass. Maybe I could make a tabletop out of copper tubes although that seems a little pricey. Have any of you seen such things or am I on my own in the creative proccess? Let me know what you think.

wow!

@ March 6, 2013 4:11 PM in Snow Melt Water Temps

I've been running at 90 and was afraid that was too high. I have it set down to 80 as an experiment. I'll let you know how it flys.

Snow Melt Water Temps

@ March 6, 2013 8:56 AM in Snow Melt Water Temps

I have a small snowmelt system for our sidewalk out fron. What sort of water temps should I be seeing across the system, supply and return when it is operating during a snowstorm???

My Heart

@ February 2, 2013 4:16 AM in Predictions

Wants Baltimore. My brain says SF. Lots of individual talent in the pool for SF. if they play well as a team they should win. Baltimore plays well as a team already, but can they overcome the talent gap?

Carrier VVT system

@ February 2, 2013 4:12 AM in Carrier VVT system

I have been asked to upgrade and modify a 20 ton VVT system that has never worked well. One of the fist things I want to do is replace the bypass dampers used to control the static pressure with a variable Frequency drive to control the speed in response to the static pressure. I need leads to manufacturers and info on how it's done. thanks.

Spectrum analyzer.

@ January 4, 2013 3:21 PM in wifi thermostats

What be dat? Where can I get one? Lead me to an understanding Obiwan Kenobi.

Honeywell.

@ January 4, 2013 3:04 PM in wifi thermostats

I've been installing the new Honeywell 8000 wifi tstat. It's been working well on a few jobs, but.... I decided to put 5 in a small commercial building so I could monitor the temps and they could not connect with the wifi, and disrupted the customers service. Their Wifi wouldnt work until I disabled the eifi feature. I need to call Honeywell and see what could be up but havent had the time yet.

electric circuit drawing program

@ December 31, 2012 2:47 PM in electric circuit drawing program

We often make up our control circuits on custom boiler and heating jobs. It would be nice to have a program to help us draw up something to leave for future service techs who may not know as much about such systems. Do any of you use a program you would recommend. Nothing too sophisicated please. More than a few steps below rocket scientist would be appreciated.

Good gravy

@ November 26, 2012 6:14 PM in Buffer tank

What have I done? There's 3 posts where one ought to be.

Nope

@ November 26, 2012 6:13 PM in Buffer tank

I think that will work just fine. Connecting to the 3/4 connections may make some people nervous but there is really not much resistance since it is so short of an area that is 3/4. Just a blip from a vast resevoir to a 1 inch pipe. Just a hiccup of resistance then it's gone. If you had said you were hooking up to the cold water feed then you would have had the dip tube which is much longer and would add more resistance. But you didnt so there. As for the explanation for the buffer tank with it's own cicuit, I didnt realyze there were two heat sources. Now I think I understand. Thank you berry much.

Nope

@ November 26, 2012 6:13 PM in Buffer tank

I think that will work just fine. Connecting to the 3/4 connections may make some people nervous but there is really not much resistance since it is so short of an area that is 3/4. Just a blip from a vast resevoir to a 1 inch pipe. Just a hiccup of resistance then it's gone. If you had said you were hooking up to the cold water feed then you would have had the dip tube which is much longer and would add more resistance. But you didnt so there. As for the explanation for the buffer tank with it's own cicuit, I didnt realyze there were two heat sources. Now I think I understand. Thank you berry much.

Nope

@ November 26, 2012 6:13 PM in Buffer tank

I think that will work just fine. Connecting to the 3/4 connections may make some people nervous but there is really not much resistance since it is so short of an area that is 3/4. Just a blip from a vast resevoir to a 1 inch pipe. Just a hiccup of resistance then it's gone. If you had said you were hooking up to the cold water feed then you would have had the dip tube which is much longer and would add more resistance. But you didnt so there. As for the explanation for the buffer tank with it's own cicuit, I didnt realyze there were two heat sources. Now I think I understand. Thank you berry much.

with

@ November 25, 2012 7:56 AM in Buffer tank

All due respect, I'm not seeing the benefit of running the buffer tank on a seperate circulator like that. also please explain the benefits of being able to turn it off and on. I would have used the buffer tank as a hydraulic separator in place of the close set of tees or just run it in series with the return to the boiler. I'm interested in the benefits you were planning on in your configuration.