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Adam

Adam

Joined on November 1, 2005

Last Post on January 29, 2006

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@ January 29, 2006 9:26 PM in Zone for radiant from a steam boiler??

Check out Heating Q & A , I think they have aa article on condensate hot water heating , good luck.

@ December 24, 2005 4:09 PM in Condensing boilers

How come prices for condensing boilers are twice the cost in North America than they are in the UK?.Check out the prices of Baxi Products in the UK and what they are priced in North America.

@ December 22, 2005 1:40 AM in How to build a house (SE)

I just put in a new foundation last year .Instead of going with standard concrete forms we used styro blocks . For the floor we used 2 inchs of styrofoam and infloor heating .You could heat the basement with a candle it is just that easy to heat.The contractor who did our foundation builds new houses using these styroblocks.You get 3 inches of styro ,6 "of concrete,3'of styro.The walls are a true R35 and you dont have to frame your exterior walls .The blocks have webs in them to screw drywall to . A house built using these methods would not only be very energy efficient but also be very resistent to tornadoes and siesmic events.

@ December 17, 2005 3:26 PM in Well, no freakin' wonder I can't keep your room warm...

Talk about a load of crap,you could just throttle some one when they do not use common sense and reasoning.Ive had similar problems when other plumbers run someone elses work, when they do not understand the complexities of the situation.A tradesmen never runs down someone elses work in front of a customer. It only makes sense to address the infiltration issues before spending more on heating system upgrades.I think you almost have to explain it to the customers in pro -con format. Some generals are like computers you have to punch information into them.They do not care about the finshed product as much as they do there bottom line.

@ December 17, 2005 1:28 AM in A real shame

What a shame they probably never used barrier pipe either.Would it be possible to lay new tubing and pour gypcrete over the existing floor?.Or do they already have the flooring down?.What about using standing radiation or baseboards?.Truely this is tragedy that hurts the industry as a whole.

@ December 16, 2005 3:10 PM in Steam Heating

Just a topic for discussion ,what is the future of steam heating in the residential market?.I know we still have the replacement market in older homes but are there still people out there still installing new steam heating systems in houses.

@ December 16, 2005 2:48 PM in The power of Natural Gas....

Natural Gas like any other fossil fuel has the potential of being very dangerous.Where Iam from we have been using natural gas for about 100 years.These accidents are few and far betweenbut they all have the same route cause ,complacency .For the most parts it is not rookies blowing themselves up it is seasoned veterans that forget about the power of natural gas. Too often we are in a rush to finish a job that we do not adhere to safe working practices .How often have you seen some test a tie in with a lighter.Dont laugh it happens more than you think . Equipment operators seem to be largely responsible for the majority of incidences .Instead of calling to have the services located or even exposing them with a shovel after they have been located they continue to dig.Again this is complacency and this happens alot although without incidence most of the time.Natural gas is no more dangerous than other fossil fuels or electricity it is just more dramatic when it happens.

@ December 15, 2005 5:09 PM in Cold radiators, what to try next?

Did they work fine last year?.Have you done any work to the system in the past year ?.That maid of mist is it approved for use on steam?. The answer to your problem is something simple that you can find by going back over previous work.

@ December 14, 2005 5:33 PM in hepex or aquapex

Doing some work in a Lab today and noticed that the radiant cooling panels had aquapex running to them .I know that higher tempuratures increase the amount of oxygen the non barrier pipe will absorb,the water is at about 50 degrees .The circulators are not bronze or stainless steel could this cause problems in the near future?.

@ December 13, 2005 5:57 PM in Pressure Test on Rough-In

If the line dropped 1/2 lb in 52 hours it is fine .The air comes out of the compressor hot and will cool causing the pressure to drop.Generally if you do not see a drop of 1 lb in an hour the line is fine.But if you feel the need to test it again go for it .I wouldnt fill the system until your ready to start it .Heck it only takes 5 minutes to fill it but it may cause you grief in the future if it freezes.

@ December 11, 2005 5:47 PM in Cann't maintain comfortable heat

If your boiler is an 80000 btu Munchkin which would be about 72000 btu output.7.2 GPM would be about the max you could get out of it at a 20 degree differential.So based on that the 3/4 looks to be sized correctly.There is probably something else responsible for this problem.

@ December 11, 2005 12:04 PM in Cann't maintain comfortable heat

What are those 2 3/4 ball valves that are shut off connected to?.They are the second valve on your return and supply header.

Time and Material

@ December 9, 2005 6:40 PM in Pricing Hydronic

Is the only way not to get burned but it is hard to price the unknowns.A frequent problem is supplier shortages that some times mean you have do your job with what you can get within reason.I guess the problem is that our prices are scrutinized by our customers and there is always somebody out there that is going to do it cheaper. Our consumer driven culture demands best service at cheapest price.The working mans bill is always under suspicion, while the "professionals " {lawyers ,accountants}bill is taken at face value.I price fixing by our industry would solve this problem but Iam sure it would create other problems.I guess your going to win some and lose some,hopefully you win more than you lose.

@ December 5, 2005 1:05 AM in takagi tankless water heater

Has anyone out there seen a Takagi tankless heater used for a hydronic heating system.A salesperson who is marketing them in my area said that they can be used for such an application.For an extra 1000 bucks I can by a Trinity but it got me thinking about potential applications .Not that Iam considering using one for such an application just wondering how one might employ one.Could one employ one to add a redundant feature to an existing system.

@ December 1, 2005 12:34 AM in Buffer Tank

I guess that nails it .Variable heat input is probably the holy grail of hydronics but for the modulating challenged ,buffer tanks still have a place.They can be used to purge heat stored in the boiler that would normaly go up the flue.In a nut shell there a hydronic capacitor,there just another tool in the toolbox.If a person wanted to size one,is there a formula that you use.You would have to know which load will cause the cycling ,the gpm and btu rating of the zone and finally the time you want the boiler to stay off. These things can get fairly large,another draw back.It s valuable to know the applications and how to design systems that incorporate them.

@ November 30, 2005 6:43 PM in Buffer Tank

Here is a good topic for discussion.Could all noncondensing hydronic systems benifit from the use of a buffer tank ? { both high mass and low mass}.

@ November 28, 2005 5:57 PM in Victaulic vs Threaded Steel Pipe & Fittings

Industry standard for 2.5 and larger is generally welded pipe .One of my jobs we are using Victalic on the chilled and heating mains .Iam sure Victalic would be more than happy to give you the required information.Threading on any thing larger than 2 inch is just asking for trouble. This is where you have to educate the engineer and the owner in the current installation methods .They must be generic specifications and they probably dont know enough to think any differant.If they donot go for Victalic purpose welded at the appropriate markup,dig your heels in they donot know what there talking about.

@ November 27, 2005 2:46 PM in Tekmar d360 controller and mix valve control

Brian a cast iron boiler should get up to at least 180 when you get close to design it should be close to 200.You want that cast iron to use its thermal mass to store and transfer energy when it is off cycle.Check out your dip switch positions make sure there at proper settings because you have the sensor on the return.

@ November 27, 2005 2:39 PM in 1 1/4\" iron pipe

Thats got to be the answer .There is no other practical way to achieve a 35 foot length with out a coupling .

@ November 27, 2005 1:22 PM in Tekmar d360 controller and mix valve control

Sensor location [supply or return ]determine the placement of your dip switches 30% or 10% enable[page 14].Forgive me i do not have the manual in front of me I keep refering to the tekmar website.Your outside design temp should be st at the coldest day of the year.Your MIX INDOOR [page 7] should be set according to what type installation you have inslab ,staple up.The sensor on the return determines your dip switch setting to be at return .An aquastat should control the supply temp of your boiler it should be set to at least 180 degrees.Your boiler min should be set at 135 if you have a noncondensing unit.Ensure mix sensor is in proper location if all else fails get the installer come out and inspect the problem .Actually maybe a service call may be in order to make sure there is no something else wrong with the system.

@ November 27, 2005 12:39 PM in Staple up Radiant

Thank Mark more than a definative answer.It is good to get the right answer to often hydronic myths have a way of becoming preferred methods .I personally dont like staple up ,there too many outside factors that have a way of biting you in the ass.They install carpet or hardwood or someone puts a screw into the pipes.The least expensive method and the also the least effective.

@ November 27, 2005 12:13 PM in Cold Radiators hot water system

Perhaps they purged the air out adding water on the return side and the vent is probably the last rad in the series.Beware the drain may open but may not effectively close,no problem just get a hose cap at your local hardware store.It will screw on the BD no problem.Some zone valves have a manual over ride switch .It is an arm that sticks out the side of the valve body ,there should be writing normally open normally closed.Just pull it backwards {ensure thermostat is off}and hook it up on the grove in the slot.
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