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Joined on June 4, 2011

Last Post on July 27, 2014

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@ March 8, 2014 3:17 PM in Hydrotherm Celtic and a 15-42

I here ya, but if my tires cost $275.00 each (expansion tank). I would consider getting somthing cheaper :) That site is highway robbery!!

Boiler fill

@ March 8, 2014 3:10 PM in Pumping away ? I must have something messed up! Help

Have you tried shutting off the boiler fill valve? Does the pressure rise with it closed?

Look Here

@ March 8, 2014 2:42 PM in Hydrotherm Celtic and a 15-42

Personaly, I would replace it, but here is a link


Boiler piping

@ March 8, 2014 2:18 PM in Pumping away ? I must have something messed up! Help

On the 175 the primary piping calls for a minimum of 1 1/4 piping, is it? As well with a boiler of that size you must have an awfully large house with ALLOT of baseboard. Is the expansion tank sized correctly? And the manual does call for the pump to be on the supply side, but the fill valve and tank should be on the return or on the secondary side. I'm still trying to grasp why you piped it with two sets of closely spaced tees. Piped that way it will ensure that the second set of tees sees lower water temps.


Reverse indirect?

@ March 1, 2014 5:31 PM in Rinnai RH180 or 100 Gallon Atmospheric?

If the customer has hot water heat and needs a consistent dump load, you should consider a reverse indirect. Properly sized, it will give endless hot water without the pressure drop of a tankless.



@ March 1, 2014 1:50 PM in Beating a dead horse.

If they offered the Megasteam with a gas or oil "kit", wholesalers could stock two boilers for the space of one. I would think that it would make the boiler more attractive to stocking wholesalers, in turn increasing their market share.



@ February 28, 2014 1:58 PM in Gas fire

I think Icesailor is talking about when an existing wood burning fireplace is used and a gas log setup is installed by drilling through the fireplace and running in a gas line. You have to lock the flue open so that it can't be run with the flue closed. Very inefficient, I have not installed one in years.


Bundy (Wiki)

@ February 27, 2014 3:24 PM in radiant in ceiling?

Bundy tube, sometimes called Bundy pipe, is type of double-walled low-carbon [u][color=#0066cc]steel[/color][/u] tube manufactured by rolling a copper-coated steel strip through 720 degrees and resistance [u][color=#0066cc]brazing[/color][/u] the overlapped seam in a process called Bundywelding. It may be zinc- or terne- coated for corrosion protection. It is used in automotive [u][color=#0066cc]hydraulic brake lines[/color][/u] in cars manufactured in the USA since the 1930s.
A 1969 study by the [u][color=#0066cc]SAE[/color][/u] recommended the replacement of Bundy tube with 90-10 copper-nickel alloy [u][color=#0066cc]UNS[/color][/u] C70600 (Kunifer pipe) because of corrosion concerns.[u][size=8][color=#0066cc][1][/color][/size][/u] Kunifer pipe has since been adopted by European automakers [u][color=#0066cc]Volvo[/color][/u], [u][color=#0066cc]Rolls-Royce[/color][/u], [u][color=#0066cc]Lotus Cars[/color][/u], [u][color=#0066cc]Aston-Martin[/color][/u], [u][color=#0066cc]Porsche[/color][/u], and [u][color=#0066cc]Audi[/color][/u].[u][size=8][color=#0066cc][2][/color][/size][/u] Bundy pipe retains the advantage higher rigidity, which means less volume expansion under pressure.
The Bundy Tubing Company, started in the USA, was bought in the 1980s by what is now the British company TI Automotive

Just me?

@ February 27, 2014 2:19 PM in Just me?

Was it just me or was the site down earlier?

Never mind, I just read Dan's post on the "Apologies" thread.



@ February 26, 2014 1:06 PM in Original Equipment

Is that vacuum cleaner still in service?



@ February 26, 2014 12:59 PM in how prevalent is this?

Use the tank-less as a water heater, buy a modcon, stainless pump, potable exp tank, MBR bronze separator, check / fill valve (bronze). and some miscellaneous other stuff.

Golly, I forgot to mention that little detail of a heat loss.

Where's my hundred bucks?



@ February 26, 2014 12:47 PM in how prevalent is this?

He is also offering a one hundred dollar reward for anyone who can fix his system. I don't know about you all, but if I worked that cheap I would be out of business. All he has to do is come here and ask some questions and he would get some great advice.


Beautiful workmanship

@ February 25, 2014 3:19 PM in how prevalent is this?

Beautiful workmanship but not overly complicated. I love the tube bending. He probably didn't even notice that the job was not finished either. I'm sure MMM's all pex system will be just as well done, after all, it doesn't take years of experience to do simple plumbing work like that. By the way, is that an A.O. Smith or a Rinnai tank-less water heater.  :)

I don't understand?

@ February 23, 2014 4:32 PM in Rinnai RH180 or 100 Gallon Atmospheric?

I don't understand? Why can't you discuss the use of a tankless water heater?

The rinnai 180 is just a tankless water heater connected to a tank. 


Great minds

@ February 23, 2014 2:54 PM in Rinnai RH180 or 100 Gallon Atmospheric?

Great minds think alike!


@ February 23, 2014 2:53 PM in Rinnai RH180 or 100 Gallon Atmospheric?

   How about manifolding multiple tankless units (I don't know what their GPM requirements are)? I have heard good things about the Eternal's as they have a built in tank to prevent the "cold sandwich". You can manifold the PVC venting so you only have one exhaust penetration, intake can come from inside or outside. Caveat, I have never used this brand so my opinion is based on hearsay. Most, if not all manufacturers at this point have the capacity to cascade multiple units to provide whatever GPM required.


To better serve

@ February 23, 2014 2:07 PM in manifolds in series?

   To better serve the customer, I would try flushing the system and re-piping it using a flat plate heat exchanger and non-ferrous components for all of it, not just the remote manifold. After all, the heat comes from the boiler not from the remote manifold with the non O2 tubing. I have non O2 barrier PB systems that have been working for over thirty years.
    With a heat loss of 25K BTU there is no reason for an electric back-up but you definitely need a buffer tank with a boiler of that size. You can reuse the the water heater as a buffer tank or put in a real buffer tank that will fit. I understand space is an issue but there is probably a buffer tank that will fit your application.

Sorry, I missed that it was a combi. Use the combi as as designed, and use the electric as a buffer, or install a real buffer

   I'm watching the Daytona 500 and trying to use the computer at the same time. I have a hard time walking and chewing gum as well :) 

   As Mark said, post some pics.



@ February 22, 2014 5:28 PM in steam

You posted this in the Domestic Hot Water section. Try re-posting in the steam section.
Post some pictures of the install as well. Your description is difficult to understand.

And if your boss doesn't believe in skimming a steam boiler, he has no business installing them.



@ February 22, 2014 5:01 PM in Scott's radiant heating project

I'm with Z-man, purchasers don't want to worry about replacing their boiler when they buy, they want move in and decorate ready. High efficiency is also a big selling point. 
Bob, If you were to replace the boiler and put a sticker on it with whom and when to call for service you might just gain a customer. Versus losing the one who is moving away.
Scott, Instead of running pipes outdoors and insulating, why don't you save yourself some money and time, just remove the baseboard (trim that is). , cut 12'' of drywall up from the floor, run your pex and re-drywall the 12" all the way around and reinstall / replace the baseboard. Only one seam to drywall and you will use less pipe, not have to insulate and you will make the home ascetically more pleasing. I have always re-painted the homes I have sold in a neutral color anyway. You are going through so much effort as it is, why not do it the correct and easy way? You could probably run the piping in a day.


In a pinch

@ February 22, 2014 3:48 PM in Advice on Rare Old School "Dual Flow/Bypass" Radiator Valve

In a pinch, Use a copper tee and solder in a vane made out of copper. It has to extend through the male adaptor as far as the original. It's a pain in the a**, but if done right, it will work. You will have to remove the spud. You will not be able to shut it off unless you have enough room to squeeze in a valve. And unless you install a bypass, the valve will shut of the entire loop.


C.I. radiator

@ February 22, 2014 1:33 PM in Can't Get Baby's Room Warm

I would go with Ironmans solution. A cast iron radiator, sized to match the heat loss of the other rooms will prevent the boiler from short cycling as it will if it is on its own zone. You already have the existing piping off the same loop as the other bedrooms. Used cast iron rads are not too hard to find, just make sure that is is the right size.



@ February 20, 2014 1:52 PM in Scott's radiant heating project

What type of heating system is in there now? What was your heat loss? Exposed piping? This must not be a luxury home?

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