Joined on January 27, 2011
Last Post on December 1, 2013
@ April 8, 2013 8:00 PM in Control options with Vitodens 200 WB2B (Vitotronic 200 + Vitotrol 300)It does not matter if ps or other config is chosen. You just pick one when configure boiler. A pump is a pump. Also you can see other info on page I just posted. D and E shows on and off system pump. Just my 2 cents.
@ April 8, 2013 7:55 PM in Control options with Vitodens 200 WB2B (Vitotronic 200 + Vitotrol 300)From viessmann manual.
@ April 7, 2013 10:58 PM in Control options with Vitodens 200 WB2B (Vitotronic 200 + Vitotrol 300)It is funny to see how subject of thermostats , pumps control, night setbacks comes all the time up.people want control. It is simple, you do not need thermostat, you do not need night setback. You do not need zoning. You do not need control over the heating system. You need comfort and savings. Just set odr , TRVs , and forget about control. System will control itself. On 200 series system pump is controlled by pump module and gets turned on and off when boiler thinks it is necessary. This winter I had a chance to replace brand new German boiler from viessmann competitor. I did not have a chance to put my hands on those boilers and what shocked me is amount of configuration options not needed in real life and low build quality. I guess we get spoiled by viessmann products.
@ March 29, 2013 10:00 PM in Threaded connectionsPro dope is the best and only tread joint compound right for job.
@ March 26, 2013 8:37 AM in Integrated HVACUnless price of gas and oil will go up dramatically there is no incentives to install efficient equipment. Amount of paperwork and related expenses defeats the purpose of rebates. Clients who chose to go through these programs are from the bottom of the pot and generally just want to get systems installed free of charge, The real moving force today in high efficiency business are clients who enviromentally concerned, the ones who want the best equipment market has and oil customers who think gas will stay cheap forewer
The reason Europe and the rest of the world is so ahead of US in energy efficiency is beacause they pay at least double of what we pay for oil and gas. they are forced to be efficient. We in US are forced to be unefficient. This is the case when one green beats another green.
@ March 24, 2013 11:33 PM in Just Don't Get Modcon Boiler Pump Charts!I like testo http://www.testo.com/online/abaxx-?$part=PORTAL.INT.SimpleContentDesk&$event=show-from-menu&categoryid=23775814
@ March 16, 2013 4:40 PM in Oil to gas conversionIs a non condensing mid efficiency boiler. Buderus gc 124 is also non condensing mid efficiency boiler. Did you considered high efficiency condensing direct venting boiler? You will not need expensive lining and rebates are doubled.
@ March 16, 2013 4:28 PM in Do I really need a Navien CH-240?I personally do not like navien products, but to be fair, all this sounds as an installation and design problem rather than navien problem.
@ March 16, 2013 4:01 PM in 95% Efficient Condensing Replacement BoilerRebates will never cover difference between high efficiency and standard system. You have an issue with contractors and their sizing and pricing.
@ March 16, 2013 4:01 PM in 95% Efficient Condensing Replacement BoilerAre you heating a building? Where did you get those numbers?
@ March 16, 2013 3:58 PM in 95% Efficient Condensing Replacement BoilerHeat loss here heat loss there. How can one say that cast iron radiator based system will condense only in mild weather? Heating emitters sized for deign temperature and this temperature happens to be only few days a year. Also over sizing of the radiators rather a rule than exemption.
@ March 16, 2013 3:53 PM in 95% Efficient Condensing Replacement BoilerCast iron radiators are perfect for high efficiency system and condensing boilers. As a rule radiators are oversized and will work on much lower temperatures of water 95% of the time. Because high efficiency systems are based on constant flow and variable temperatures of the water you do not need 180 F water temperature anymore, find good contractor with extensive experience in designing and building high efficiency systems. Scrap this contractor from the list.
@ March 14, 2013 9:48 PM in New Modcon old cast iron radiator systemThis is DIRTMAG design.
@ March 14, 2013 5:38 PM in New Modcon old cast iron radiator systemI always install dirtmags on CI radoators system
@ March 14, 2013 5:21 PM in New Modcon old cast iron radiator systemI m using sentinel X400 for system cleaning and X100 for water conditioning.
@ March 9, 2013 7:42 PM in boiler sizingIBR = amount of heat radiators get from boiler. DOE =amount of heat IBR + heat loss in the transmission of heat from boiler to emitters. If piping is in conditioned space then it accounts as emitters, if in unconditioned space then it cannot be used as heat emitters and not counted as hear emitter. But when boiler starts from cold condition on design day temperature, then all mistakes in heat loss will show up. And when I see old gravity systems with 3" piping I m sure want to take this piping into account.
@ March 9, 2013 4:31 PM in WTB: Ridgid 1210I have rigid 802 for sale or trade to rigid 300 in Brooklyn. Let me know if interested
@ March 9, 2013 3:29 PM in boiler sizingI use 1.15 pick up factor for hydronic systems.. Why 1.2?
@ March 9, 2013 7:30 AM in Looking for feedbackSure Goverment has no problem spending our money. Problem is the way they doing it. I had a few chances to do service on aero kc 1000 boilers. Problems were no chips in acid neutralizers, pid settings screwed up, boiler operating on 180F setpoint, building management system installed and not needed in this application, but no outdoor sensors. Sure they had no savings. Boilers never modulated building was over/ under heated.
Regarding rebates. People do not do these installations because of rebates.