Joined on October 13, 2004
Last Post on September 25, 2013
@ September 25, 2013 12:50 PM in 2" Grundfos UPS50-80/4F Pump 115Vhere are the pictures
@ September 19, 2013 10:52 PM in Triangle tube Solo 110 pumps wont shut offI went on a service call today on a triangle tube solo 110 and the complaint was very hot domestic water. Get there and boiler was cycling off of high limit. The dhw and radiant pump was running with no dhw and radiant call. This house was it by lightning this morning.
@ September 10, 2013 12:51 AM in Pump curve testing ?What pump would be a good match in a 2400 series taco.
@ September 9, 2013 11:01 PM in Primary/secondary pipingOn a single zone on the secondary loop would you install check valve and flow check valve. Have anybody used the flange flow checks from webstone.
@ September 8, 2013 11:21 PM in Primary/secondary pipingI can do 10"-15" from elbows to pumps and spirovent. Do you recommend piping into secondary circuit vertical from hoz. primary loop tees.
@ September 8, 2013 9:14 PM in Primary/secondary pipingOn a primary loop how close can there be 90 degree fittings from spirovent and pumps.
@ August 21, 2013 11:44 PM in 2" Grundfos UPS50-80/4F Pump 115VSelling a used 2" Grundfos UPS50-80/4F Pump. Its in good condition pulled from a working system. Nothing wrong with it. Don't know what this is worth used. Taking offers right now.
@ August 10, 2012 9:55 PM in Pri/Sec piping single stage boiler controls ?What control does most guys run on a copper fin basboard with primary and secondary pipe with single stage cast boiler with reset.
@ August 10, 2012 12:53 AM in hydronic circulating pump and TRVsI was at a job today and they have the same problem, some contractor added 20 zones to a monoflo tee system. and they don't know why some of the zones are cooler and there have been other contractors working on this system in the last 10 years, they still did catch it.
@ August 10, 2012 12:48 AM in hydronic circulating pump and TRVsi was on a job today and it was a monoflo tee set up and somebody 25 years added 20 zones valves to the system and the building owners didnt know why some of the zones were cooler there others.
@ August 9, 2012 9:20 PM in Pump curve testing ?its on speed 3 with those psi numbers. when i used speed 1 it went down to 19 psi.
@ August 9, 2012 8:42 PM in Pump curve testing ?I'm testing the pump curve on a grundfos ups 50-80/4 hooked up to 2.5" copper monoflow tee primary loop and my inlet gauge reading was 14psi and 22 psi at outlet of pump with all the zones calling for heat and with one zone calling for heat it was at 14 psi at inlet and 23 psi at outlet. The boiler has 14 psi in boiler. To get the head of feet number do i use 22 psi or 22psi - 14psi= 8psi to use. 1 psi=.43 head feet.
@ October 12, 2009 9:01 PM in vapor system missing Hoffman Loop?Steamhead
What should i do with these steam main vents on the dry returns. Do i need to install those main air eliminator.
@ October 12, 2009 7:54 PM in vapor system missing Hoffman Loop?I do have all of Dan's books. I know it needs a vaporstat, but the pressuetrol is turned down.
It has 4 returns coming back to boiler. But two of the return gets hot and the other two don't get hot. If i take off the 4 return main vent the two of the return mains vent like crazy and the other two don't.
@ October 12, 2009 12:20 AM in vapor system missing Hoffman Loop?I think i'm missing a hooffman loop. I have a steam vapor system here, looks like some things were changed at one time. Some of the radiator don't heat.
@ April 17, 2009 11:48 AM in Is this a vapor systemI do have all of dan's steam books.
@ April 17, 2009 1:08 AM in Is this a vapor systemdoes it matter what radiator valves you have on this vapor system.
@ April 14, 2009 8:45 PM in Is this a vapor systemhere are some of the pictures.
@ April 10, 2009 11:48 PM in Is this a vapor systemthere are main air vent at the end of the dry returns. I looked all thru dan's book and i think when they replaced the boiler 17 years ago some changed some piping around. The water line on the boiler is lower by 2" of the hartford loop close nipple. I don't know if we even have 24" from water line to header. I will be getting some more pictures tomorrow.
@ April 10, 2009 6:14 PM in Is this a vapor systemBy looking at this pictures of the lower radiator fitting, what kind of 2 pipe steam is it.
@ April 10, 2009 2:08 PM in F&T trap on 2 pipe steam?Should there be a F&T trap at the end of the 2 pipe steam main, before to go back to the return main. The 2 return mains on this line stop venting after 3 mintues of run time.And then the return getts hot.