Best Of
Re: Its been way too long.........NYC Gathering..
Having a foot operation on 1/29 so probably not
Re: Its been way too long.........NYC Gathering..
No time available in February for me. I can't complain, but sometimes I still do……….. (and you have to be a certain age to know where that line comes from)
Re: Good Protocol For Keeping Water Clean in Boiler
Reddit can be good, but moderation is always a challenge everywhere on the internet. Here we are lucky to have Erin.
the Burnham Independence line seems to not be lasting as long as it once did decades ago and lots of people around here including me would be hesitant to install or recommend one today. I haven't seen a conclusive reason but my favorite theory is that they have changed the boiler castings perhaps to make them better at transferring heat in the name of increased efficiency, and their lifetime has been greatly shortened.
They also make what I think is called a "three-pass" design called the MegaSteam that is highly regarded (but is sold only as an oil-burning boiler). I have no direct experience with either product.
Re: Silly Question
@Intplm., I wish! I haven't been able to track one down.
If anyone is interested in district heating systems, the International District Energy Association is a great resource. They post interesting news about systems in the US and around the world.
Here's a map of the district energy systems in North America:
Re: Silly Question
I spoke to a utility worker in NYC who was fixing one of the "steam chimneys" that you can see installed on the manholes where one of these apparent leaks is.
He told me that the issue is usually not a leak in the steam system, but rather it's a failure of the storm drain that is allowing storm water runoff or some other leaking water to come into contact with hot steam pipes (rather than an actual steam leak). I found that interesting so I'm sharing it!
Re: Condensing lp gas boiler short-cycling
Many LP gas burners have a low gas pressure switch.
Are some of them auto reset? IDK
But have you monitored the gas inlet pressure as these short cycle?
Just a WAG….
JUGHNE
Re: Edr calculations for unusual radiator
@AndythePlumber , the scan that @HeatingHelp.com posted has the answer. Each ~16x13 section is 5 square feet,so 9 such sections is 45 square feet.
Re: Upgrading old 2 wire Honeywell thermostats to Honeywell T9 smart thermostat
Actually there are some particular interesting things that happen with that zone valve that make it less than a simple wire addition.
This post addresses the Taco Valve when adding a Nest. you may have a similar problem with the T9
There may be a resistor needed. @SteveSan will have the best answer for you. just know that your zone valves may not be wired according the the factory recommended diagram. That is because the factory diagram does no include the R and the W and the C terminal designations of the thermostat and the transformer, therefore they can be reversed and still work if both zones follow the same reversed wiring design.
Re: Upgrading old 2 wire Honeywell thermostats to Honeywell T9 smart thermostat
This comment tells the story of how the Taco 571 can be wired several different ways. As long as you stay consistent there will be no problems.
When you need to add the C wire for a smart thermostat like the T9 you need to be sure that the R and the W from the 2 wire thermostat are connected this way.
I have modified the manufacturer diagram on the Left to show that R from the 24 VAC transformer is connected to R on the thermostat. W from the thermostat is connected to 1 on the Taco zone valve. And the common terminal 2 on the Taco zone valve is connected to C on the transformer
With that wiring confirmed, you can easily add the C from the thermostat to C on the transformer as shown on the Right diagram. You may find that is all you need as long as you double check the original wiring before you start.
Re: Upgrading old 2 wire Honeywell thermostats to Honeywell T9 smart thermostat
It is unclear from your pictures if your thermostats are correct or reversed. On a two-wire thermostat, it will not matter. However, on a Common C wire it will make a difference. On one of the zone valves a White wire is connected to #1 and on the other zone valve a Red wire is connected to #1. The wire color does not matter because electricity is colorblind. What does matter is that W on the thermostat is connected to #1 on the zone valve. If that is backwards, then you will have a problem connecting the C terminal on the new T9 thermostat
If you make a mistake, you may let all the factory installed smoke out of the transformer or the thermostat or the boiler control. Once that happens you can never get that smoke back in. I like to use these Smoke Keepers so that will not happen.
