Joined on August 13, 2009
Last Post on December 10, 2013
@ May 5, 2013 10:52 AM in CondensateThe acid in condensate is from co2. If you let it sit it will remove itself just like a can of soda goes flat so does condensate, the warmer the faster. This is why a well with acid water will always eat out the cold copper, the water heater will usually cook the co2 out . I have a Navien tankless in my house that I still haven't hooked up to a pump. So I always have a five gallon bucket of condensate to test. I have a solar prefeed so it hasn't really been a big hassle. LOL
Because the code requires a neutralizer I will usually tie in a tub drum trap with the plug up and a 2 foot standpipe and fill it 1/2 way with calcite.They hold enough calcite for several years and work fine.
Some jobs I have to dump outside, I remove the duckbill check from my condensate pipe and use it as a drain back system, it works well just don't dump it on a sidewalk.
I believe it is going to be a short time till the sewer administration realizes there are millions of gallons of unmetered condensate going down the sewer. Being the money hungry fools they are and to pay for pensions for people who haven't worked in 40 years, they will find a way to tax condensing furnaces and boilers. Then getting rid of condensate onsite will make alot more sense.
@ May 4, 2013 7:01 PM in Lesson learned NEVER let the wife tag along to the home showhttp://www.npr.org/blogs/health/2012/09/20/161501413/for-best-toilet-health-squat-or-sit
The high toilets just compound this problem. Google this topic and you will see
@ May 3, 2013 10:28 AM in Lesson learned NEVER let the wife tag along to the home showI only take her to bike shows. That way the only thing for her to buy is bike parts and bikes.... and I have no problem with that.LOL
@ May 2, 2013 4:41 PM in Mark Eatherton to lead RPAYou do Mark. Congratulations!
@ May 1, 2013 10:58 PM in Lay outto cold surfaces. The window having the lowest r value will be the coldest surface in the room. If you dont install the radiators under the windows to provide a warm air curtain, you will be more likely to feel the effects of cold 70.
Remember, the more radiation you add, the lower the temperature water you can use but you must add it equally in each room.
@ May 1, 2013 10:19 AM in Taking out a 3 yr old Navian..the Europeans are, Germans , French, Greeks, Italians. But I do know that if we are talking about Germans, they still use a significant amount of Buderus cast iron boilers.
@ April 30, 2013 9:01 PM in Taking out a 3 yr old Navian..We also have condensing furnaces, lots of em. All vented with PVC and I see alot of them go over 25 years. You can easily measure the Chlorides in water. I am sure the condensate coming back in PVC pipe is well below what would be considered damaging to stainless steel.
@ April 30, 2013 8:39 AM in Taking out a 3 yr old Navian..What are the water specs? PH /hardness /chlorides?
@ April 27, 2013 9:46 PM in brass nippleits like those eccentric union halves on back mount commercial sink faucets. I always stop at tractor supply and grab a bag of 7/8 flat washers to shim the flange 90 behind the sink.. What a pain in the a&%. I also love to see bar faucets with a male shank threaded into a flange 90. By all accounts it should leak like a sieve because the shank is a straight thread, not a pipe thread. Now if I would do it ,it would leak but somehow hacks make it work, it is beyond me. LOL
@ April 27, 2013 7:34 PM in brass nippleIf you dont have a nipple adapter for your machine, take your 1 1/2 and 2 inch nipples and run them into your solid die head using an internal pipe wrench, cut the threads deep about a 1/8 inch on both sides and youll be fine.
Trying to use a face joint on urinal adapters will just leave you with a hard time if it snaps while trying to tighten it. It appears your situation you have no way to back up. Two hex heads on the adapters will take up more room than the oversize nipple.
@ April 26, 2013 7:01 PM in brass nipplecouldn't you make one?
You need a nipple adp. If you dont have one.. get one. At the price of nipples today its a short payoff.
@ April 25, 2013 10:36 PM in navien and odr?I did not realize this fact until after the install. Hopefully they correct this in the next version coming soon.
@ April 21, 2013 1:05 PM in Direct Pump TT Solo 110 with 3 zonesand see if he would put an end to this nonsense.
@ April 20, 2013 1:20 PM in Direct Pump TT Solo 110 with 3 zonesI have throttled my flow rate down to obtain my 160 return through the board!
Now if we both have a return coming back at 160...ahhh forget it, I have to go weed wack my driveway!
@ April 20, 2013 12:33 PM in Direct Pump TT Solo 110 with 3 zonesI meant a balancing valve.
@ April 20, 2013 12:28 PM in Direct Pump TT Solo 110 with 3 zonesYour missing the point. This was a hypothetical question using real easy numbers, it wasnt about any boiler just temps needed to serve a space.
But I know what your going to say and I dont agree with that.
Lets say I actually was talking about putting a 110 prestige on that 4 feet of board(Which I wasnt) Our ultimate goal is to have the boiler fire at a rate equivalent to what the house is losing, So how is pri sec going to change that? If the boiler cant modulate low enough for the demand it is going to short cycle just as rapidly on pri-sec that it does straight through....to the second.
This is why the tt110 has selective blocking times and a larger...3-1/2 gallon exchanger
@ April 20, 2013 12:16 PM in Direct Pump TT Solo 110 with 3 zonesmy gpm. Thats how you adjust flow through different circuits. Forget about short cycling the boiler, we will pretend we have a mini modular that fits inside our mini house that modulates to 0.
The point is Chris, in order to heat this house we must deliver a certain temp water in order for the radiation to do its job. Therefore no mater what boiler or piping strategy we use, the return water temp from our radiation will be the same, in this case 160.
Now if we take that 160 at .20 gpm and just add enough btus to bring it back up to 180 or we could do it like you say, take our 160 return and pull .10gpm through the boiler and heat it to 200 and let the other .10 gpm go through the t's and mix them downstream to regain our 180, which one is more efficient?
Your boiler is operating at 200 and mine is 180, you have two pumps and I have one.
Also, as our outside temp goes up and we get closer to our condensing temps on the boiler. We both will be pulling the same temp return water in, but I will be pulling in twice as much causing my boiler to condense more...making it even more efficient.
@ April 20, 2013 9:55 AM in Direct Pump TT Solo 110 with 3 zonesWe go into a single room home to replace the boiler, we measure the house the glass ect and do a heat load calc. The calc says that this home needs 2080 btus on a 9 degree day to maintain 70 degrees inside. OK
On the wall we see 4 feet of Burnham 9a baseboard. Its already there, we are not adding to it, subtracting from it. It is our job to figure out how we can make that board heat the house on a 9 degree day. So we go to our little baseboard fact sheet( ill include a link) and we find that if we heat that board to 170 degrees we get 520 btus per foot.
So what I would do is send 180 to the board then adjust my flow so 160 is leaving. This would be an average of 170 across the board with a flow of .20 gpm.
Forget about outdoor reset, forget about the fact that the closer the water temp gets to ambient the slower the transmission of heat. Today it is 9 degrees and thats all we care about. Now tell me what temp and flow you would use to heat that house?
@ April 20, 2013 8:09 AM in Direct Pump TT Solo 110 with 3 zonesThat you believe what you say is true......so good luck with that theory.
@ April 19, 2013 9:55 PM in Direct Pump TT Solo 110 with 3 zonesare already determined by your existing radiators and your heating curve. It doesn't matter how you heat your water or mix it, in order for your system to match the heating curve, the temperature of the water entering the radiator and leaving the radiator is pre determined by your heat loss and the size of your radiator. Heating some of the return water hotter and then mixing it downstream to the temp required by the ODR only serves to increase your vent temperature and lower efficiency
There is nothing more efficient than a boiler replacing exactly what was used at the lowest possible temp Your TT boiler can do that because it has a low pressure drop exchanger because of modern computer controlled robotic welding. Casting, bending and stamping just cant accomplish this nomatter how you try to twist the math.