I dont run my basement zone at all and it stays 65-68 through the winter. None of my pipes have insulation going to my zones though. My basement is not finished either. It helps keep the floors from getting cold.
Looks Great. I didn't see that you were preheating your domestic hot water. A pre heat tank with a side arm convection exchanger could take some heat off of your main hot supply to the air exchanger.
I was thinking because the domestic water heater is not in the same building as the storage a side arm in series with the hot water into the house from the storage could be used. The side arm would be on a pre heat tank that had cold domestic water in and fed out to the domestic water heater cold in, be it propane or electric, I didn't see it in the videos. The side arm would only have hot water going through it from storage when the house called for heat and the circulator in the building with the boiler turned on.
Completely different control systems. The lambda control adds an O2 sensor at the flue outlet and both primary and secondary air lnlet shutters are motorized and controlled by lambda control to maintain a certain oxygen content in exhaust stream. Adjusts on the fly as burn conditions change and can adapt to some extent for different types of wood. Lambda control should add a percentage point or two to the overall efficiency of the boiler and you don't have to manually set the air inlet shutters like you do on the profi controller set up. Slightly less standby loss with the lambda controller as it mostly shuts the air inlets when the burn is over where as the profi set up has fixed shutters so more airflow through the boiler when off.
I seem to recall about a week for the first boiler and maybe two for the second purchase. #2 had to have the flue connection changed from vertical to horizontal and that involved moving the O2 sensor and temp probe in the flue outlet.
Hi Tim, I got my boiler and thermal storage in place and I need to order a circulator. I know you used the Grundfos Alpha2 but it looks like in your video that the shut off valves are 1 1/4 inch. The pipe coming out of the boiler is 1 1/2 inch. Do you know if Grundfos makes a circulator with an 1 1/2 inch output? I thought there would be a problem necking down from 1 1/2" to 1 1/4 inch. The pipe openings on my thermal storage tank are also 1 1/2 inch. Thanks for the help. Chris
Boiler output/input is 2" on the Attack 45, I adapted down to 1 1/4" almost immediately and no issues. Looks like you can can get 1 1/2" flanges for the alpha 2:
