Best Of
Re: Central A/C refrigerant leak - 12 year old Lennox system
the drier can be installed inside near the air handler. That prevents the rusting.
pecmsg
Re: Monoflow/Reverse Return Piping Question
If you can't find Monoflow you could use regular tees with a valve between the tees but why bother?
Reverse return is better and is self-balancing to some extent.
Dont forget with reverse return you can decrease the pipe size of the supply pipe as you take load off and the same with the return the pipe increases as you add load.
Monoflow you have to run the same size all the way around full size. Reverse return has more pipe but the cost is offset somewhat with smaller pipe.
Re: Just wondering
What gave me/us the most problems? The panic of customers in the month of October. This is the month in my area where and when the weather would change, and all manner of need for our services came charging in all at once. I started to call the month of October "A month of Mondays."
Intplm.
Re: Just wondering
Yes October/November. They knew they had a problem and hoped it would magicly heal over the summer
Re: Replacing 30 year old Vesta oil boiler….
I like the fact that you have a good contractor that has already completed work for you in the past and you were satisfied enough to call them back again. I might call and ask them if they are an Energy Kinetics dealer. Although Burnham makes a good product, the American Made EK products use some energy saving technology that has proven to lower operating costs. The EK boilers can also provide domestic hot water at a lower cost than a propane or electric water heater.
Re: Lochinvar WBN080 lockout
Here is a resistance chart from the manual of the other model in the other thread I posted. Keep in mind this is for thermistor type sensors. Self resetting Snap type thermal switches are usually open (infinite resistance) or closed (low resistance). I believe 1/2 of the ARHL (Auto Reset Hi-Limit) is NOT a thermistor and actually is a Snap type thermal switch. Having thousands of Ohms resistance in series with the 24 VAC current path to the Gas Valve makes no sense.
109A_5
Re: Lochinvar WBN080 lockout
I believe the dual sensor is (1/2) sensor is a thermistor (S1 on the diagram), so variable high resistance that changes with temperature, usually NTC (Negative Temperature coefficient), temp goes up the resistance goes down. The other (1/2) sensor is a (needs to be) thermal snap switch type (Auto Reset Hi-Limit, Orange / Gray wires) which when closed at room and normal boiler operating temperatures has a very low resistance, like less than 1 Ohm to support the load current of the Gas valve. At least that is what the wiring diagrams are telling me. You should have the original documentation, are they significantly different than my postings ?
You may have the wrong sensor. Or your new sensor is defective. If you prefer chase out the 24 VAC that powers the Gas Valve and see where it stops.
Additionally the flame proving time should be long enough for a digital meter to settle if normal voltage is actually present. So an analog meter or and indicating load (such as lamp(s) that I like) should not be needed in this case.
If you replace the Gas Valve you probably need to do a combustion analysis. A combustion analysis may not be a bad idea for a tuneup when you get it running.
109A_5
Caleffi Zone Valves
I like the new o-ring seals vs. fiber washers.
Re: What's a good humidity meter?
it is a very old school hygromteter, i think it was in my elementary school science books that were published in like 1970 and i think one of the middle school science rooms had one. i'm guessing they've been around since the 20's or 30's. that tube in the middle fills with water and keeps the wick wet.
mattmia2