Joined on May 27, 2011
Last Post on December 6, 2013
@ August 14, 2013 11:12 PM in pipe ID and flow/BTUshow angry she may be if we should experience an extended cold snap ? Does she like the COOLLLDDD ?
@ August 14, 2013 10:04 PM in pipe ID and flow/BTUsChris , I believe that since the 2 pumps never see each other that the Superstor could technically be classified as a buffer tank . It does decouple primary from secondary in a sense . 4 holes does not a hydraulic separator make . An HX will do .
@ August 14, 2013 9:04 PM in pipe ID and flow/BTUsis a pretty steep curve pump . Does not sound to me that once you increase the tubing size that you will have such high head . But in the instance that you need to move the entire 225,000 the 0014 will not do it at more than 8" of head with a Delta T of 20 , a higher Delta could work . Where I am going with this is that for the same almost exact money you could purchase and install a 0013 VDT and keep your system at whatever Delta you choose and the ability to pump more volume at higher head pressures .
@ August 13, 2013 7:57 PM in Radiant Heat not Heatingthe Company with the Orange dominant logo has struck again . Have had homeowners ask me to install internet purchased systems before . Not good .
@ August 11, 2013 9:56 PM in Please Judge my layout...you should certainly add a dirt separator , a magnetic one at that and locate it on the return side piping . You can install the circs horizontally , however the motor must be horizontal , this should be whether vertical or horizontal . You may actually want to invest in the Caleffi 5494Sep4 , Air , hydraulic separation , dirt (magnetic) . The 1 1/4 models are available I believe and the 1 1/2 will be available in September . You can certainly use the 1 1/4 unit It is an investment but worthy of the cost , especially in a system such as yours . You must not orient the Return tee in the position in which it is depicted , both tees must be oriented the same way . You may also want to use Taco Bumble Bee ECM pumps for your zones , since your system was gravity you should get away with 9 to 22 watts without problem and also keep your Delta T right where you want it no matter the conditions . Also move the boiler pump to a location on the return between the boiler and any fittings , Do not put it on the supply as shown . Please keep us informed
@ August 10, 2013 3:15 PM in Viessmann questionsee how this is piped . Wider picture possible ?
@ August 10, 2013 3:11 PM in Converting from oil to natural gas - Navien CH210 was recommendedI agree with you Jean David . Don't get used to it though . This is exactly why I charge what I charge . To insure that I will still be here later , because I have not invested my life into this trade to do it for less , because this is not a hobby and I don't need the practice . When I am gone my sons who are now both fine mechanics will step right up . Now teaching them the design end as I near the end of my career. Yeah Right , I'll do this till I die .
To the Op . Remember when budgeting for this to be fair was my point . Your new heating system should cost considerably less to operate and you must take that into account when making your decision . In the end you should still be keeping more of your money on a monthly basis , this is what most forget or don't understand , why is beyond me .
@ August 10, 2013 10:02 AM in Converting from oil to natural gas - Navien CH210 was recommendedis subjective LL . What you believe your budget should be may be unrealistic . Most contractors who will do this the way we have explained will be compensated better than those who don't , you may get lucky though and find the guy who is really good at heating and not so good at business , they do exist . In my area the job you are looking for done by a QUALIFIED contractor would probably sell in the low 10s to mid teens . There are a couple guys who would do it for 8-9 and lose their shirts , finding that guy would be good for you . I would use the find a contractor area of this site in your search and if you'll give a specific area where you are located I'm sure that some of us would steer you to someone , that happens all the time
@ August 9, 2013 6:38 PM in Converting from oil to natural gas - Navien CH210 was recommendedBTU boiler . If it is satisfactory and adequate why rush to change it ? But since you ask here it is . Your first reason for changing boiler is Financial . So why put a larger boiler than you need that will cost more to operate than one of smaller adequate size . I have rarely come across a properly sized boiler , properly sized emitters , and hell seeing a properly sized boiler and emitters in the same place is like seeing a VelociRaptor in the woods in Antarctica . It's that rare or so it seems . So spend a little less on your first cost by investing in the less expensive , properly sized boiler , find a qualified designer / installer , have your new properly sized boiler installed to play nicely with your existing emitters and SAVE your money every month . Or Not .
@ August 8, 2013 8:24 PM in Converting from oil to natural gas - Navien CH210 was recommendedContractor number 1 sounds like the wrong guy . Anyone who comes in and looks at current BTU and will do like for like should be thrown out and not considered . As for being the largest in the area , this is a phenomenon that is all too common . He is selling the cheapest stuff , making it look great , using manufacturer spoon fed nonsense and in 5 years everyone will be tearing out the stuff possibly as part of a Class Action . People like cheap stuff and contractors who sell cheap stuff get overwhelmed by work load and then quality suffers . There are 3 REALLY BIG companies like this in my area and I have to say thank you to them because when the market dropped out for new work I made quite a good living troubleshooting and fixing their installs . How come they could not diagnose basic heating system problems on their equipment ? Contractor 2 is a little better , he measured the existing radiation ,and did some calculations . Did he measure the rooms , windows , doors , exposed walls and ask about insulation R values ? If he did not measure the latter things discount him also . YOU must have a heat loos performed . I measure every house whether new or replacement , by the way so do most of the guys on here . Take our advice and let what the homeowners who have a 1 year old system where it has not been tested yet opininons go in and out your ears .
My thought is that you will end up with a space heating load of between 41,600 and 52,000 BTuh . This takes into account what you have said and a 4 - 5 BTU per cu. Ft requirement . Of course that is speculation but I would bet near correct .
Don't install 2 gas units , you will have a boiler , use it to make your hot water also . Since the appearance of mod cons and the like the good old cast iron boiler has been a stepchild , when in all reality a well installed and controlled CI boiler can actually outperform it's condensing cousin because more contractors than not don't make sure it condenses , lowering the efficiency to right around the AFUE of CI . Your DHW usage should also be taken into account . I would add that 41,600 & 52,000 are fine water heating numbers also . Store water in an indirect at 150 or 160 and use a mixing valve to temper down to 120 , you will have all the hot water that you need and the boiler will have plenty of time in all seasons to replenish before running short .
Good luck with your project
@ August 7, 2013 6:54 AM in DHW mixing valve recommendationsSeries mixing valve . And store the water in tank 150 or slightly higher
@ August 6, 2013 10:16 PM in Prevailing wage questionsthe collective bargaining rates differ from County to county with some larger urban areas or individual Cities having different rates than the rest of the county .
@ August 5, 2013 10:17 PM in How much baseboard per room.What Chris & Carl said . Do the heat loss . Nothing to add .
@ August 5, 2013 10:10 PM in Radiant Ceiling spacing effectsI sent those files to you but you have not opened them . Why? Gordy's explanation is dead on .
@ August 5, 2013 12:19 AM in Oil vs natural gasA BTU is a BTU is a BTU is correct . The definition of a BTU is as follows and I'll leave it at that for you to make your own case .. BTU = the amount of energy required to raise the temperature of 1 pound of water 1 degree F in 1 Hour . This is where the 500 (499.8) in the hydronics formula comes from 8.33 lbs in a gallon x 60 minutes in an hour equals 499.8 . So a gallon of fuel oil is roughly 139,000 BTuh
NG is 100,00 per therm , propane 91,800 / gallon , electric 3412 /KWh , Hardwood 14,000,000 cord . You get the idea
@ August 4, 2013 8:15 PM in Is my hydronic system flow direction correct?install that air eliminator . The Spirovent is a good unit . Move the circ to the other side of that as you stated .
@ August 2, 2013 11:02 PM in Boiler Helpmay want to invest in a better quality air eliminator like a Caleffi or Taco . I would configure the Air eliminator where it is , make up water entering below it into the bottom port and Expansion tank below that , and place the circ to the system side of those items . You may also think about moving the zone valves to the supply side , this will eliminate any migration into zones not calling .
@ August 2, 2013 10:37 PM in Optimum flow for in-slab heatingpiping issues exist that may account for the large difference in Deltas ?
@ August 2, 2013 10:19 PM in Optimum flow for in-slab heatingLet me ask a question of you ! If 0* C is 32* F how could you possibly deduce that 12* C (53.6*F) is equal to 10* ? Hope you like your Ultra and 0 Delta Slab .
@ August 1, 2013 9:20 PM in Optimum flow for in-slab heatingare moving the fluid too rapidly through the slab and not allowing for any transfer . forget turbulent flow with radiant heat , it does not matter , laminar is fine . Turbulent flow is best practiced in other methods of heating . Slow the fluid down and your floors will heat up . You want a 10 Degree Fahrenheit Delta T . Possibly your supply water to the floor is not warm enough . All you will accomplish by putting more water through that panel is to get frustrated and make your equipment work real hard while accomplishing nothing .
That being said , it appears that you are not moving enough water , but don't worry about turbulent . You want the Delta T to be negative 12*C (10*F) . This will allow the floor panel to heat evenly and heat up . Where are you located ? What tyemperature water are you now pushing through the tubing in these panels ?
@ August 1, 2013 8:21 AM in Advice needed on replacement hot water tankinches water column is supplied by the utility ?