Joined on November 22, 2006
Last Post on October 14, 2013
@ October 14, 2013 4:26 PM in Munchkin HX leak---what are my options?The heat exchangers that we have replaced this past year were discolored and blocked. I have seen many problematic installs that had flow rate problems. They use the same size pipe as the boiler connections. WRONG! One needs to know the flow rate required and size accordingly. They size the pump for a 35 Deg Delta T, assuming they will get better efficiency. WRONG, use a max of 30 deg with the proper pipe sizing for the flow rate. Wrong pipe sizing = wrong flow rates. We see this so often on trouble shooting other peoples installs. Some of them will not fir 100% because of insufficient flow.
The coffee cruds usually happen in propane installs or badly adjusted burners.
@ October 14, 2013 4:20 PM in Picture from a Lochinvar WHN-55 installationWhere you have the street elbow and bushing (illegal) is that a cast T above? Then that too is illegal. I assume the copper line is fuelling the hot air system or another appliance. Also code states that when you go down you need a drip tee/sediment pocket and not up into the appliance. Is that Teflon tape on the gas joints? If so, it is illegal also. We ban Teflon tape because a thread of it can prevent a gas regulator or valve from closing properly!
@ October 14, 2013 4:12 PM in Picture from a Lochinvar WHN-55 installation1) Why a Rinnai AND a Lochinvar?
2) A pump must 5 dimensions before and three after of straight pipe!
3) A street elbow in NOT allowed on gas piping in Canada. I am a voting member of B149 and B149.2
4) Has TSSA checked off on the install? Who was the licensed contractor that did the install?
@ July 21, 2013 4:23 PM in Scottish legionella outbreakWe had an outbreak in Quebec City last year. It was all based on cooling towers. We now have mandatory inspections of cooling towers and water treatment.
@ July 21, 2013 4:19 PM in on line parts pricingWe do not discus pricing here for obvious reasons! In Canada we have "Allpriser" which will have retail pricing and you have to deal with your suppliers to have your cost. They also put out "Winpriser" which is PC compatible. You can input your various supplier discounts.
Please refrain from discussing pricing and costs!
@ July 3, 2013 8:49 AM in Fitting questionStreet tees are are prohibited, as well as nesting bushings.
@ July 2, 2013 2:09 PM in Fitting questionWe in Canada specifically prohibit street elbows and tees. NFPA 54 does not.
@ June 19, 2013 2:11 PM in High Efficieny Gas Boiler RecommendationHere is one with a KBN500. It does snow melt, radiant in the garage area, domestic hot water, 400,000 BTU pool heater and a heating coil. Here is also the garage with a turntable to turn the cars, Wolfe BBQ and plasma screen!
@ June 19, 2013 1:57 PM in High Efficieny Gas Boiler RecommendationMod/con are ideal for the application. You do NOT need to run high temperatures into the coils at all times.
Here is one of our installs of a large house. It has 3 tons of geothermal with a Knight KBN 285. The system provides hot water, heats the pool, heats the duct coil and 23 zones of geothermal.
@ June 10, 2013 10:05 AM in How the Europeans do it?Here is one of my acquaintances in Austria who designs and installs all over Europe:
http://www.traussnigg.at/ It is in German but, you just need to look at the pictures to see the difference between here and there. I have some pictures somewhere of a boiler room at the chateau that I stayed in in Ravenna, three years ago. Just lovely the work they do there.
Apprentices generally have to go to school and do "stages" working for a contractor, then go back to school. It is 4 to 6 years depending on the speciality. Even chimney sweepers need to go to school and have a 4 year apprentice program!
@ May 29, 2013 2:46 PM in consultingMake sure that you get insurance and that you charge as much as an engineer! I usually charge even more than an engineering consulting firm. I have one rate for consultations and another rate if there is litigation and a court date. You charge for mileage, photocopies, everything.
@ May 29, 2013 2:43 PM in Radiator - can I use for FHW?BTW, Burnham even has a section in their website about converting steam systems to hot water!
@ May 29, 2013 2:42 PM in Radiator - can I use for FHW?Converting to hot water is something we have done many a time with tremendous energy savings. The large luxury apartment building we did last fall, had one leak!
Those rads can be converted.
The radiator sizing in the old days was to provide heat with the windows open. So no problem with lower BTU output. Remember INFLUENZA 1917!
Here we use 1050 hours of burner operation of which 100 is for -20F plus weather. So again, most of the time the systems run much lower temperatures than even 140F. So the boiler condense for around 900 Hours.
The physical facts are that it takes more energy to transform water into steam than heat the water to a lower temperature! You just need to do the math!
Here were it is much colder than Mas, energy savings when converting are over 50%! We did a cathedral in downtown Montreal:
Before 175,808 cubic meters of natural gas
After 68,892 cubic meters of natural gas!
I have the actual copies of the gas bills.
We do perform a lot of repairs on existing steam systems including one pipe vacuum systems. We are about the only ones in the region that can repair this type of system and others. BTW, I first started working on steam heating in 1977 at my dentist house that had a one pipe wet return system. Since then, I have designed and installed systems and boiler rooms for industrial applications where steam is put to good use!
@ May 14, 2013 9:03 AM in Plumbing Forum?Good idea Dan! It would make it easier for all concerned
@ May 1, 2013 7:15 PM in tempering tankAny pre heat tank or piping risk legionella and an assortment of bacteria if your HWT is not at 140F. The energy savings for a residential unit is minimal while the risks are very high of personal injury! The installation costs do not justify any energy savings as this has been tested for many years!
@ May 1, 2013 7:06 PM in Hot Water Recirculation pipe erosionWe have had several customers that experienced pin holes in the hot water and not recirculation outlets. Most are caused by using thin wall M over L and high velocity, IE too MUCH pump! Adding softeners that are not properly adjusted will increase salt in the water and increase corrosion. You just need a few gpm for recirculation and try to get rid of the softener on the hot water side.
@ May 1, 2013 6:58 PM in Rumor has itIt does not work here were winter water is at 33F. There is not one little combi that works here. It works great in Europe (not Scandinavia), the far east and milder US states. But not in Northern areas with 5 gpm faucets! We refuse to install any combi units since they came out!
@ May 1, 2013 6:51 PM in I do not just work on steam boilersThe one in one million times that a BFP would leak, will not spray hot water! It will drip. Remember the system pressure versus street pressure. It is not a safety valve that will pop off at 30 psi or more!
@ May 1, 2013 6:43 PM in CPVCYou are required to use the venting system that is specified in the certified I&O manual. CPVC has nearly twice the expansion of PVC. If in the US, solid core ABS is better as it only deforms at 217F and it expands at less than 1/4 of cpvc! PP is the Cadillac of condensing vents below 500,000 BTU.
Don't worry about the chlorides, if the install is done according to the certified I & O manual! It has been tested and certified to work.
@ April 21, 2013 9:16 AM in Converting steam convectors to forced hot waterWe performed the conversion on a large luxury apartment building, last fall. We kept the trap bodies and removed the seat in them. We drilled and tapped an air vent on each radiator. We replaced some of the return horizontal lines in the basement. We had only one leak on a return riser on the first floor. It was due to be changed anyways. We used variable speed Grundfos pumps on the main loop.
The savings using degree days are enormous. With a 13% colder winter, energy consumption is less than half! All the occupants mentioned that the heating was now much more comfortable and more even in the rooms.
We do at least one steam conversion a year, mainly commercial buildings. It cannot be done on one pipe systems but can on any two pipe. Remember that the cast iron steam radiators were always over-sized. Therefore, there is no problem with lower temperature hot water compared to steam.
@ April 19, 2013 10:02 AM in Burnham Megasteam sizingMaking DHW with a steam boiler is a very energy inefficient way, specially during the summer. Get a dedicated hot water tank.
@ April 19, 2013 9:58 AM in Replacing boiler question?This is the biggest mistake we encounter with mod-con boilers next to improper venting. Those that don't do the math mistakenly believe that the proper size is the boiler connection sizing. It is so far from the truth. Keep your 1 1/4 sizing including the same size strainer. You reduce only at the boiler connections.