Best Of
Re: Combines intake and exhaust on gas w/heater?
does it have a mushroom cap on the outside like this. If so it is a concentric kit.
hot_rod
Re: Pumping AC unit down in winter
Not supposed to pump down a scroll. You can pump it down partially and then recover the rest.
When you evacuate the lines set and open the valves then warm the compressor if it is cold out. Depending on the temperature. You can also throttle the suction valve as @pecmsg said.
When they first came out with scrolls they said they could "eat liquid" and no CCH was needed. After compressors were failing CCHs became the thing. Carrier especially was famous for units with no CCHs.
Re: Pumping AC unit down in winter
it should have a crankcase heater.
just listen or Throttle the suction service valve valve maintaining 25-50 #’s
pecmsg
Re: Happy New Year!
My son and I enjoyed meeting you at the AHR in Atlanta GA. Too bad we are not going to make it to Florida this year. Happy New Year to all the WALLIES I met at Atlanta @archibald tuttle @hot_rod @Erin Holohan Haskell @DanHolohan and all the other wallies that have been so helpful to the folks that come here for the help they need. I enjoy sharing my knowledge and humor with everyone here.
If I have offended anyone as a result of my attempt at humor…. Get over yourself! I really don’t give a hoot! 🤣 (Hoot was not the word I intended to use but this post kept getting bounced until I changed it.)
Happy New Year and God Bless to ALL
Re: Bosch vs. Viessmann Condensing Boiler for old home
First step before any brands is to figure out how big of a boiler you actually need. If you are not using about 5000therms of natural gas in a heating season, it is not 200kBTU.
You can take a gas bill from last winter and run through the math here to figure out what you actually need:
With cast iron rads the oversizing is not so much an issue but you are paying for more equipment than you need.
With older houses and mass rads, you also want outdoor reset with constant circulation, make sure the installer sets it up. Besides the fuel savings, this keeps the rads at a more even temperature which is good for comfort plus it also stops any banging from pipe expansion.
Kaos
