Best Of
Re: COP & sizing question
@Jamie Hall : "The Mitsubishi @DCContrarian mentioned is a good cold climate heat pump , and should only cost about twice as much to run as a modern oil or gas boiler or furnace."
Your bias is showing.
As fate would have it, I just finished an analysis of that particular heat pump vs oil for someone in Massachusetts, the difference was $5.09 a year, in favor of oil. You can read it here:
If you add the cost of annual cleaning of an oil burner the heat pump is cheaper.
I think the point is that people are sold heat pumps with the claim they'll save lots of money. In New England that's generally not true.
Re: Any new feelings about Stay Brite 8 soldering vs brazing?
Brazing flows into the fitting just like solder no difference. With brazing you can get away with no flux because the chemicals in the brazing rod take care of that. True that you can "puddle" some braze material on the outside and some people do that (I do) but its not really necessary
With brazing you don't really need to clean the pipe and fittings unless they are really oxidized although it doesn't hurt and I usually clean them for best results.
get some scrap tubing and fittings and try it and then un solder it you will see how it flows. best to practice before do a real job
Re: for sale barely used Beckett afg f3 burner, Bacharach Smoke tester, Dwyer monometer, fan timer, orbi
You had an oil furnace in your home in St Petersburg?
Re: Replacing cast iron radiator with smaller one
I feel like you're onto something with this solution though. I think this problem can be solved with more cats
amaiale
Re: J-channel mounting block suitable for Prier C-134 series
Thank you all for the advice! I found a suitable sized utility block. Before and after photos …
Re: Replacing cast iron radiator with smaller one
A lot of this is lost on me as a non-heating-professional, but the basics are: it is not a super-simple feat to just replace this radiator with something smaller unless the room is way too hot, which it isn't. I've consulted with our cabinet designer and we made a modification to the cabinet design that will allow us to keep the cabinets (and thus radiator) where they are. If we want to switch to radiant floor heat at some point, I will be back for more specifics. and maybe a physics lesson.
amaiale
Re: Any new feelings about Stay Brite 8 soldering vs brazing?
if you are good at controlling the heat you can fill gaps with soft solder too. it gets more liquid as it gets hotter so if you go for just melting it is less fluid and will fill a bigger gap. look at how they do bodywork with lead or wipe lead pipe.
mattmia2
Re: Any new feelings about Stay Brite 8 soldering vs brazing?
That is the difference between Stay Brite #8 and regular Stay Brite and 95/5. and Silver Brite
I haven't looked this up recently so I could be off but 95/5 was always hard to work with because the temp it melts at (going up) and the temp it freezes at (going down) is the same temp you get no mushy middle ground so very difficult to fill gaps . I always avoided 95/5.
Silver Brite is different it melts and freezes at different temps so you can fill gaps.
I believe that the difference between regular Stay Brite & #8 is for the same reason and that #8 is easier to work with.
Re: Trane ac air handler
@HVACNUT, although the Honeywell version of that RLY2087 time delay relay with the add-on PCB is no longer available there is a White Rodgers version with the part number 57T01-843 for a lot lower price from SupplyHouse.com . You can also get he RLY02087 from SupplyHouse.com for a lot more $$$. It is the same part and does the same thing but is not a PCB attached to a general purpose relay (like the R8222). Here is the cut sheet on the WR control that shows the old and the new style as having the same part number. 57T01-843 If you look up RLY02807 on Supplyhouse.com, you can see it is more expensive, for the same exact part, purchased thru Trane/Am Std.
This is all just too much discussion for a super high efficiency air handler from 20+ years ago. You don't need the dime delay if you are trying to keep an old system operating. So you loose a quarter of an SEER point. If you are that concerned about efficiency, you would no longer own that air handler.
Just throw the TD PCB away and wire up the relay without it. Then you can get paid and move on to the next service call.
But that is a Pro view point… On your own equipment, that is a different story…. Why are you still using that old stuff? If you are waiting to save up to get a new system, finance it and put it in now ans use the savings of the new system, along with the rebates to get the lower electric bill NOW! then use the savings from the lowere electric bill to pay off the financing. Someone in your area has to be offering a financing plan with low interest.
Unless you don't use the AC that much, then keep the old gal running!
Re: Any new feelings about Stay Brite 8 soldering vs brazing?
I have piped DX systems that were 3 1/8" OD