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RobG

RobG

Joined on June 4, 2011

Last Post on April 16, 2014

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Coal boiler

@ April 16, 2014 3:53 PM in Modifications to Hydronic System

Is this a closed or open system? Did you use oxygen barrier pex for the radiant?

Rob

Entran

@ April 16, 2014 3:49 PM in The dreaded Entran

You said it's still pliable, the stuff that was plugging it was probably a biological growth. Did it stink when the system was first opened up? I would go with the heat exchanger (I would still use an oxygen inhibitor on the Entran side just for extending the life of the tubing).

Rob

Thermal Imaging

@ April 16, 2014 3:36 PM in Thermal Imaging

I'm thinking about getting a IR camera. One of my questions is if they work for identifying air infiltration / exfiltration areas to aid in sealing homes. If it would work, I was thinking about using it as a sales tool " Using IR camera, identify and seal and / or notify homeowner of areas of visible infiltration".  If it can be used for this, what would be the best way of doing it, indoors / outdoors, day / night?

Just brainstorming

Thanks for any input,
Rob   

Hot Water

@ April 16, 2014 3:10 PM in losing heat

The easiest test, just turn on a hot water faucet and walk over to the water heater and grab the hot water outlet pipe, if it's hot enough, you'll know it. Another thing to look at is any two handle faucet that may have the handles open (I have seen a hose attached to the laundry tub faucet with a sprayer on it, the faucet handles were left open and the water would travel from the cold into the hot side tempering the hot water. It could however be a bad thermostat in the gas valve.

Rob

Piping

@ April 16, 2014 2:22 PM in Modifications to Hydronic System

I think that this is kind of what you are trying to do (see page 43 of attached manual). This is for a completely different boiler than you are using, but it illustrates the piping of a system with mixing valves and closely spaced tees and an indirect. You will have to size you pumps based on your cv's, loop lengths etc....

http://www.lochinvar.com/_linefiles/WH-I-O-Rev%20P.pdf


Rob 

Entran

@ April 16, 2014 1:47 PM in The dreaded Entran

Is the Entran used for a separate radiant zone from the the cast iron rads or is it run to the cast iron rads as a piping replacement? If it is a separate zone you should use a heat exchanger and non-ferrous components for that zone. If it is run to the rads use an oxygen inhibitor. Contact Rhomar for the correct product. As well, let the customer know that the chemical treatment needs to be maintained annually. This is the best solution barring a re-pipe.

Rob

Recipes

@ April 13, 2014 6:13 PM in But he's SO cute

However there are several fine recipes for cooking them. Squirrel pie being my favorite. MMMMMMMM Yummy!!! 

Absolutely

@ April 5, 2014 6:03 PM in Indirect or Combo Boiler with Recirc DHT?

As Snowmelt said. Terry, just go to the Navian site and they will tell you exactly what you want to hear. I for one always trust manufacturers claims : ).  

If it were me, I would go with the indirect and the recirc and be done with it.

JMHO,

Rob

The Problem

@ April 5, 2014 1:41 PM in Problems with Open radiant floor system

This is the problem with the Internet peddlers / designers. For the cost difference of the two additional stainless pumps, you could have installed three cast iron pumps, a flat plate heat exchanger and actually saved money and had a safe and functional system. Do you have o2 barrier tubing installed?

Do you warn family and guests about the questionable water at your home?

Step over a dollar to pick up a penny.

Rob

Cute

@ April 4, 2014 2:40 PM in My favorite picture

Someones gotta teach him: lefty loosey, righty tighty.  :)

West Coast

@ April 4, 2014 2:35 PM in Stinkbugs

Paul, are you seeing stinkbugs and ladybugs on the west coast?

Rob

Painted?

@ April 4, 2014 2:25 PM in Bad hydronic panel install...

It almost looks like the pipes might be painted silver. I can't quite tell. It's hard to believe that there is not one black fitting or support in there. I hope thats what it is, for his sake.

Rob

Paul is right

@ April 3, 2014 3:41 PM in Need used or cheap commercial steam boiler

George, perhaps if you post the non-profits cause you might get a more positive response. Used boilers are usually relegated to scrap. If it is for a good cause people will keep their eyes and ears open. Who knows, rather than having to buy it, someone would probably donate it. A quote that I recently read struck home with me. "What I regret most in my life are failures of kindness"

Rob 

Stinkbugs

@ April 3, 2014 1:55 PM in Stinkbugs

I'm just trying to find out the geographic areas affected by stinkbugs. For the last five years give or take ladybugs have gotten horrible in my area (Winchester, Va), they get into air inlets, combustion chambers, you name it they're in it. But for the last three or so years stinkbugs have entered the equation and multiplied the problem, They cause problems you wouldn't anticipate, I found a stinkbug in between the contacts on a relay the other day. How far across the country is this an issue? Or do you have other critters?

Rob

Steam / Hot water

@ April 3, 2014 11:53 AM in Value of converting oil/steam to modcon gas?

If no insulation upgrades have been done to the house, you very possibly will not be able to re-use your existing radiators. The radiators in your home were sized for steam heat which operates at a significantly higher temperature than hot water. If you were to switch to hot water you shouldn't be surprised to be cold on cold days. As well, not all steam radiators are capable of being converted to use hot water. Why not vent a new gas steam boiler through the wall?

Rob

Oh Harper

@ April 2, 2014 3:59 PM in Burnham gas conversion

Where has harper been? He must be on vacation.

Definition or harper: Talk or write persistently and tediously on a particular topic: guys who are constantly harping on about conversion burners

(I took the liberty of changing the last two words of the dictionary example sentence

Rob

Don't forget

@ April 1, 2014 11:49 AM in Navien 240 combi installed - I have concerns

Don't forget the pressure drop through the Navien. The 1/2" main and the pressure drop through the heat exchanger is a recipe for dissatisfaction.

Rob

Nice Video

@ March 30, 2014 6:21 PM in Removing and loosening painted radiator condensate trap covers

Nice video, your right though, a little boring but very informative. I didn't know that the repair kits were available. Did Frank do the filming or did WW send down there own videographer? If they provided an easier washer / clip and stainless allen bolts it would definitely make for a better and easier install as you pointed out. Are they paying you guys royalties on the ASU parts?  Good stuff, thanks :)

Rob 

Question?

@ March 30, 2014 3:17 PM in The leak detection job from hell....

Not to take away from ME's praise :) but how did this post get recycled? I remember it from 2012 but when it first popped up recently there was no new post attached to it until Mad Dog's? 

Inquiring minds want to know,
Rob

4johnpipe

@ March 30, 2014 12:48 PM in Gas piping

I might be misunderstanding you. First you stated that 1/2" pipe would be be adequate for 199,000 BTU's using the "summation method".  Then you stated that I was was correct, you looked at the tables for Navian and realized that no, 1/2 would not cut it but that you misspoke because you use Rinnai. Are the sizing methods different between the two brands? Then you said that you would never install a gas line smaller than the inlet of the appliance. Please show me a Rinnai water heater or boiler with a gas inlet smaller than 3/4". I'm at a loss.

Rob

The Downfall

@ March 29, 2014 4:29 PM in smart 50 with tankless water heater

The down fall of that design is that by the time you buy and install all the components (and at a glance, it needs another pump after the mixing valve and another expansion tank on the open loop) you could have bought a combi boiler and have a system that WILL work. As Heatpro said, you are chasing your tail trying to build a cheaper mouse trap. Price out all the materials, factor in your time (don't forget all the time to make it work ).

Pumping

@ March 28, 2014 3:58 PM in Circulator pressure differential question

That type of installation should be piped primary secondary. Since the water flows through all the boilers all the time in reverse return, If those are zone pumps, any one of them needs to provide minimum system flow through all of the boilers. If that is the case, when all of the pumps are running you will be over pumping and subjecting the system to erosion. It needs a re-pipe. I would also suggest a good controller (if not already installed) as that system is meant to be stepped fired. I have worked on allot of the Hydrotherm MR series boilers, when installed correctly they are a decent boiler.

Rob
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