Joined on March 1, 2007
Last Post on February 28, 2014
@ July 11, 2008 4:18 PM in Remote sensor for thermostat - averaging?..............(Starch)Braeburn 5300/5400. You can use 1, 4 or 9 sensors, not 3. I'm not sure of the electronics on this but it has to do with the power wave signal. Check them out at www.braeburnonline.com
@ July 8, 2008 6:35 PM in heating pool with pool deck"Let's take a flyer on this" and see where it leads us. We had a client who was on board. It did work well but took some time to get started in the late spring and ran out of gas in early October (N CA). There are cetainly more effective options but we tried all kinds of things. Some were pretty neat, some, well, ahem...we can discuss another time! Maybe!
@ July 8, 2008 5:09 AM in heating pool with pool deckon a system 28yrs ago and used pvc piping and circulated the pool water thru the system. Basically I made the parallel grid of a solar collector out of pvc and reversed returned the six grids I made. I made two grids up each side of the pool (you decide based upon the dimensions available) and one at each end. It worked well. Make sure you have really good exposure and not a lot of shading. To my knowledge the system worked for many years until the property was purchased and a new mega-home was built.
@ June 30, 2008 7:26 AM in I need to learn how to weldI could make about any welding test anywhere. Those days are long gone. I love tig but having been away from it for many years, my hand eye co-ordination is just not there and I am just not going to invest the time to try to get it back. As well, the eyes...Anyway, I'm selling my Miller Synchrowave 180 (Stick/tig)and going to get a good Mig machine. Teaching yourself to weld is an ambitious project. Time, practice and material are necessary. As noted the Miller/Lincoln sites are excellent resources, but I think you will be ahead in both tme and quality if you go to the local voc tech and invest a semesters worth of instruction in conjunction with those aids. Rod angle, travel speed, penetration, tie-ins, whats good and why. It's all about confidence, eh? Get the best machine you can afford. I also have a Miller 135, 110V mig that is a dandy little machine. Only 10% duty cycle, but for auto body and brackets, etc around the house it is great, and portable. 10% duty cycle means that for every hour I can burn wire for 6 min. Yes that is low, but you are not doing production welding with this type machine. Most of yur time is set-up and positionoing anyway so a high duty cycle is frequently not necessary. Get a good auto-dimming helmet. Take care of your eyes. Work in a clean area. You will be surprised where those sparks can get. The reason welders wear those funny caps is to prevent sparks from dropping into your ear. Well, and to be cool of course! I worked a lot of power houses, refineries and pipelines. I was a good welder, but man, I saw so many better than I was. I'll never forget a kid from Oklahoma laced a P5 horizontal cover pass on a 24" main steam riser that was at shoulder level as you passed. It..was...perfect! Not many times you can say that about something.
@ June 23, 2008 6:34 AM in DHW high loadGo with multiple Rinnai's. For a short term use appliance it makes no sense to maintain any large vvol of water to meet that demand. Try to put them as close to the fixture as possible. The advantage of the 3 untis it takes to do the 15gpm is that you have the comfort of use of the fixture when you want it but you have no energy consumption when the fixture is off. As well, if junior washes his hands the system will modualte to meet only that demand.
@ June 21, 2008 12:41 PM in Soalr Pool HeatingYou build it to suit your local needs. The ability to drain is always positive.
@ June 20, 2008 6:36 PM in Soalr Pool Heatingthe concrete pool shirt. Put some piping into the slab and y0u can heat the pool while cooling the concrete.
@ June 5, 2008 9:03 PM in advice on heating and cooling a sun roomI would use the Fujitsu mini split (because they are more efficient, less money and I represent them). I don't have the book handy to check how often it gets below 17, but we have a 24RLXQ model that will go down to zero F with a minus 13F cut-out. If another model is chosen, be careful as the lower limits vary by model . Some go to 5 some 14. As a backup I'd recommend the Air-Share by Tjernlund. It is a transfer fan which could pump houose heat out to the other room. Only 75 cfm but effective and short money. www.fujitsugeneral.com www.tjernlund.com
@ June 4, 2008 4:15 PM in Geothermal heating and coolingrun the loop to the swimming pool and heat (reject the house heat) the pool in the summer. Don't cover the pool at night and the heat will typically radiate to atmosphere. This was in the late 70's and in N CA so the degree days were about a push. We'd use a glazed solar system to heat the pool, with a good insulated pool cover and use the pool as the water source. You could also put a small cooling tower on the system to reject heat. Lots of options, have a ball!
@ May 27, 2008 5:44 PM in Possible to power vent nat gas boiler up chimney?Power venters are typically negative pressure devices on the appliance side of the venter. Conversely, the outlet is positive pressure. Without specifics on the size of the flue, boiler breech, firing rate, etc it is difficult to say what may be suitable for your install. The problem in getting a suitable, safe system is getting the negative pressure flue (the chimney) to act as a conduit for the positive pressure metal liner. You can get positive pressure pipe. It is spendy and you will have to work with the PV manufacturer to see if they will authorize a positive pressure outlet connection extension to the factory built unit. I honestly can't magine why they would do it, liability issues being what they are. It will exceed their listings at the venter outlet/pipe connection. I represent Tjernlund and they do have a commercial grade venter which mounts on top of the flue and creates a total negative pressure system for you, which is what you need...and want. I think they look great, but some do not think them beautiful.
@ May 20, 2008 8:53 PM in unit sizesI just sent an e to Fujitsu today recommending they have the local guy contact you. If you get a chance sometime please give me a call. I'll be at NAOHSM again tomorrow. 617 834-8751 M.
@ May 19, 2008 9:13 PM in unit sizesread all the specs on a unit. I represent Fujitsu so I'll speak of their "Heat Pump Disclaimer". It is featured prominently in each brochure and on the web site. What it says is "In some climates a heat pump will handle all of your heating needs. However, this system usually requires some other addititonal source of heat to satisfy heating requiremants in colder environments. Almost all of Fujitsu's heat pumps use inverter technology and as such offer a wider operating range and more heat capacity than a standard heat pump but will not provide adequate heating if improperly sized or operated outside of its operating range. Specifications vary by model; please consult your contractor before choosing a heat pump as your only source of heat." My recommendation on these systems is that in many cases there is a perfectly good, but older furnace or boiler in the basement that has several years left on the system. It actually does a pretty good job...when it is cold out and has a load against it. Where you get killed on these systems is in the shoulder seasons. Sept, Oct, Nov, late March, April & May. Firing 1 gal to deliver a small amount of heat is not the right way to go. Rather than replace the central system, add the mini-split. Get the comfort of the cooling and dehu and run the heat side when it makes sense. Use all available resources for seasonal efficiency. That makes sense in any environment...well, to me anyway. It is great technology...oh, and the 3 ton condensing unit is 33x36x13. You can get several of them in your regular van and one man can handle them. But, please, read the specs, all of them.
@ May 17, 2008 2:06 PM in unit sizesWhat are the customers reactions to these units?
@ May 10, 2008 7:35 AM in WWIIAs in so many things in life, time gets in our way of doing the things we know we should do and want to do. Case in point, my father and father-in-law. My Dad (Marines) was Peleilu, Eniwetok and Okinowa. My FIL (Army) was Guadlecanal, New Georgia, New Guinea and the Philipines. Through my life with Dad and the last 35 with my FIL there was never a lot of talk about what they had gone thru. I spoke with them about going to the Memorial last year about this time and regardless of help, they were just to infirm at that point to make the trip. So, if this is something you want to do, get it done today because there is no tomorrow for the remaining few. My FIL is a tremendous reader and if you are looking for a good read on the Soth Pacific service in WWII, Henry recommends, above all others, William Manchester's, "Goodbye Darkenss".
@ May 9, 2008 5:27 PM in Best Live Concert You Ever SawWoodstock- Everybody Watkins Glen- The Band, The Dead and Allman Bros Tempe, AZ '74- James Cotton Blues Band, Lynrd Skyner, Marshall Tucker (this was about when their first albums had come out), Boz Scaggs, headliner-Steve Miller (he stunk) Elton John was in the crowd and played. LS and Marshall Tucker swept the field
@ April 30, 2008 6:05 PM in chimney linersYou can use aluminum flex, insulated Al flex, which would be better in an end wall chimney, a Stainless steel liner or you could look at condensing appliances that vent with PVC. Personally, I'd forgo the use of the chimney and put in the highest efficiency unit you can find for your application and vent it with PVC.
@ April 27, 2008 2:25 PM in cooling, not heatingdepending upon where you live. If you are in the northern part of the country what you need more than "cooling" is dehumidification. An oversized AC system will give you a cold, wet climate. A system which is not running is not going to dehu. Not knowing the property I would ask if you have any particular "direct gain" areas such as lots of skylights or late pm sun exposure which would require the larger system. I represent Fujitsu in NE and must acknoldge my bias prior to going ahead, but I would strongly suggest you look at mini-split air conditioners before going ahead with the hi velocity. Spend some time at www.fujitsugenreral.com You will find very high seer (cooling efficiency) and eer (heating efficiency) ratings, especially compared to hi v. They are full inverter and therefore total variable speed. For single systems the Seer rating is as high as 21 seer. For the "multi type systems the rating are 15 and 16.5 seer. Being heat pumps you can also do a good job with heating. Where I live (MA), I would not suggest year round heating but you could do a fine job in the fall and late winter/spring. If you live further south you could run them year round. This way you do not run your single stage furnace/boiler until it has a load against it and can run efficiently. What I am saying there is that it makes no sense firing a 100,000btu appliance to deliver 10,000btu of heat, which on spring/fall days may be all you need. On the multi units there are also concealed air handler units which can be used if you object to the exposed high wall evaporator (indoor unit). And, this system will operate more quietly than a hi V system.
@ April 6, 2008 11:49 AM in Tankless water heater plus Tank?The tankless/tank combos I've used have been for commercial hot water for special design circumstances. I like the tankless hot water heater for hot water. I think that for space heating you are better with a boiler.
@ April 5, 2008 7:51 AM in Tankless water heater plus Tank?I prefer the heat-flo tank for this application as it has four tappings. Cold in, hot out, pump suction to the Rinnai and hot into the tank. As well, it has better spacing of the tapings. You don't need an indirect. Pay attention to your pump sizing. Feed the cold first to the tank to prevent pressure drop. Give a big enough spread (20f)to your aquastat that the system can satisfy. You can mount the Rinnai (I represent them so I'm a tad biased) above the tank for efficient use of space.
@ March 29, 2008 1:52 PM in DHW sizing questionlet the homeowners and GC's problem become your problem, because that is the way these things tend to go. Regardless of whatever equipment gets used I would suggest that you layout the options, both from an equipment standpoint and a necessary location standpoint and insist on a meeting with the owners and GC to discuss the good, better and best options and come up with a firm agreement on what, where, when and who pays! Not having that meeting increases your exposure. Again, Good luck on this!
@ March 29, 2008 9:19 AM in DHW sizing questionThen you will need four. The bigger issue for the customer is the monthly operating cost. Remember they cannot write off their monthly utility bill but they can finance the equipment cost in the mortgage. Assuming two people are using this fixture per day with all the holes running how long are they going to actually have that high flow tap open. With the on-demand they can run it all day long, so they gain the comfort of the big cost/flow fixture. When the system is off, and I don't care how much you like your shower, at some point you have to get out of it and go pay for it, the system will draw no energy. As well, it will modulate across its firing range throughout the day giving excellent operational efficiency. Remember, they picked the shower. Now they have to feed it and allow you to provide what is necessary to confidently do so. I would suggest that you start looking for other locations for the system which will provide you with adequate space/performance. I know that is easy to throw out there to you but again, you have to be able to give them the system they need even if they "Won't give you any more room". They put you in the position of having to perform without adequate facitilites to do so. They will not remember that you didn't have the space when they run out of hw. It will not be their fault;) I was on a job recently where in a very large house they put the Rinnais up in the attic (there are attics and then there are attics and this one I could live in), built a small insulated enclosure around them, vented with short vents thru the roof, cut a register in the second floor ceiling to provide gravity heat to the enclosure and downfed the individual vent stacks. Pretty cool. Good luck on this. Let us know which way you go!
@ March 24, 2008 7:16 AM in Power Flame high pitched whine - how to stop??worked on a power burner that was incredibly noisy. I took a piece of pipe large enough to connect to the air intake, put a 1 ft piece of pipe on the inlet and it quieted right down. Don't know if this will help but, I was surprised how effective it was.