With the windows and door in place, and basically sealed, we were able to relax a bit – no more snow blowing into the kitchen and feral cats running about inside.
. We also were able to connect with the folks at “Operation Snip”, a trap, neuter, return operation, who came and trapped 6 feral kittens, neutered them, and returned 5 (one got kept for adoption). They even came back and took the kitten who broke in and put her up for adoption.
But even with the new windows in place, the cold weather was coming and we needed to do something. When I had the outside wall open, I had pulled in two lengths of 2″ duct for a high velocity HVAC system. Poking around my email archives revealed the design for the HVAC for the house we did 5 years back when the ceiling was open. A quick review of the design, a few emails, and a pile of parts was on its way from Unico. Actually it was delivered by Comfort WinAir in Green Island. These guys were very helpful.
The first order of business, was to locate the return air plenum. This would really drive where I could locate the main air handler. Years back, when I installed an AV cabinet in the living room, I had rigged up a filter in the bottom to help cool the stacks of equipment. Well, the march of technology has reduced the stacks to a single AV receiver. What was even better, this spot was well located given the other equipment. So, I needed to cut a hole in the bottom of the cabinet for the return grill.
The next step was to assemble the blower system – a cold air return module, a chilled water coil, and finally the blower module. I first had this on a dolly so I could move it around until I found a good spot. Once it was in place, I could start adding the supply duct 7″ round pipe with an insulation wrapper.
With the supply duct in place, I could start tapping it for the 2″ branch ducts.
. With a bunch of ports in place, it was time to switch the Nest thermostat to the new blower.
At the moment, all of the heat comes from a 3/8″ feed from the radiant manifold. Next up, the new piping.