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Topics - ms1780

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General Outdoor Furnace Discussion / Cleaning plate exchanger
« on: March 07, 2016, 07:06:44 AM »
I have noticed that my plate exchanger is not nearly as efficient this year as it was last year.  I run a solution I purchase from the manufacturer in my OWB to prevent build up so I am sure that my problem is on the DW side.  I have unhooked that for the time being and would like to run a muratic acid solution through it with one of those drill pumps then flush it really good and hook it back up this fall.  I figure since its already unhooked on the DW side there is no sense in running water through it all summer.

Anyway, my question is on the strength of the muratic acid.  I am thinking maybe 1 gallon of acid to 4 gallons of water.  What have you all used in the past that seemed to clean up the calcium and lime build up well but wasn't too strong.

Thanks in advance.


Earth Outdoor Wood Furnaces / Sticking blower door
« on: October 30, 2014, 07:53:32 AM »
I know several people on here have had this issue and used a paper clip to create a small space between the trap door and the tube the air comes out of.  I was curious if after doing this you noticed and increase in wood consumption or if it let enough air in when the fan was not blowing to allow water temps to continue to rise.

Also, has anyone wired in an alarm of any kind when water temps get too low?  I thought about wiring in a PID with a high and low alarm and set the low at 140 and the high at 190 and put an audible alarm on it and maybe a flashing light to warn me if something is wrong.  I'm just not real sure how to wire it in.   I suppose a thermocouple in a sump off my second line and pull 110v off the power coming in.



Plumbing / Plate heat exchanger plumbing
« on: August 26, 2014, 10:16:41 AM »
My Earth Mountain Man 505 is in and I will be setting it in a few days.  The dealer says to plumb my heat exchanger in with the hot water tank by going to the pop off valve and the drain and it will create a natural flow of the water inside the tank and the hot water tank will never need to run.  This would be on the domestic side of course.  I have also seen many pictures of these where they basically provide "instant hot" water and you just turn the valve off past the plate exchanger so the hot water heater never even gets water when the stove is running.  What do you all suggest from your personal experiences?

Plumbing / Two zone heat
« on: May 04, 2014, 10:00:53 PM »
Hello all, I have been busy planning out my OWB and the plumbing/electrical components for it.  I am heating a house and a shop and in the shop I have an office that I work out of every day.  I wanted to run my plan by you pros and get your opinions.

I need to be able to keep my 10' x 10' office at 70 deg. all the time and the rest of the 30 x 40 shop 50 deg. except when I am in there then I will kick up the thermostat.  I plan to use a 6' baseboard heater in the office and regular water to air exchanger with a blower fan behind it in the rest of the shop.  The lines coming off my stove are 1" but the only reasonable 3-way valve I can find is only 3/4" so I was wondering if you believe that will cause any issues. 

I intend to run the line in from the stove outlet to a 24 volt 3-way zone valve that will be normally open to allow the water to bypass to the water/air heat exchanger in the main shop that will be wired to a thermostat.  When the second thermostat in the office calls for heat it will close the normally open and allow hot water into the baseboard heat then out of the baseboard heater and on to the water/air exchanger in the shop.  I can buy a heat only thermostat that runs on batteries but since it will be supplying the power to the valve quite often I think I will buy a 120 volt transformer like this one.http://www.supplyhouse.com/Honeywell-AT72D1683-Foot-Mounted-Plate-Mounted-or-Clamp-Mounted-120-Vac-Transformer-w-9-in-Lead-Wires-40VA-1740000-p
I think this set up will work but wanted to get other opinions first.

Thank You,

Hardy / Opinion on used Hardy H4
« on: March 09, 2014, 08:58:40 PM »
So I have been looking for a good deal on a used owb for a while and came across a Hardy H4 today for $900. It has an external leak somewhere and a hole in the bottom of the ash pan and needs one pump. This seems like a heck of a deal but wanted to get opinions.  Has anyone shipped one to Hardy for a rebuild? Can you tell how old it is from the picture?

For the money it seems like these would be hard to beat. My concern is that in my relatively mild climate that the stove will have problems going out when it doesn't call for heat very often. Has anyone had issues with this or has anyone added a blower to the door?

WoodMaster / used woodmaster 4400
« on: January 30, 2014, 07:43:14 PM »
I am going this weekend to look at a used 4400 and I want to test the water jacket. I intend to cap all the inputs/outputs but one then make a contraption with a Schrader valve and a gauge for the last one. I know these are vented systems so I am not sure how I am going to plug the vent. I would also like to get opinions on how much pressure I can safely put on the water jacket.  Anything particular I should look for on the unit? It is about 10 years old. I went to a local word master dealer and looked at the 4400 and I was very impressed.

Home Made / material for water jacket and firebox
« on: January 29, 2014, 03:47:12 PM »
I am having trouble finding a suitable setup for a firebox and water jacket. I can get two propane tanks. One is a 30" and the other a 38" but that doesn't give me much water capacity.  My other thought was to use the 38" one for my fire box and build a square water jacket from 1/4" plate. My third option is to use the smaller 30" propane ta k inside a 300 gallon farm fuel tank. I already have the farm tank so this would be the cheapest for me. I have read that several manufactures only use an 1/8" inch water jacket. Can I get your opinions please.


I have the opportunity to buy this used Woodmaster 4400 for $3000.  The unit has one pump on it and needs a chain for the ash auger.  The seller has never used it.  He purchased it used but never installed it.  It is a 2004 model. It has been stored with the water jacket empty which the dealer suggests could cause rust and would not be able to be seen from the outside.  The seller said the pump runs and the induction foan works.  What is your opinion of this price for this stove. 

I am heating about 2500 sf. of home and a 1200 sf shop will only be heated sometimes.



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