Відео

So glad I found this

Make sense, very useful. Thank you.

Is a forced air geo unit more efficient than a water-to-water geo unit?

Does it have the ability to dump excess summer heat to a buffer tank - rather than just dumping it outside?

My boiler was installed late 2019. Nov 2023 - error "fan pressure " , hired licensed plumber, he touched screen, the heating came back. Now , just 3 months after, same error came back. Is something wrong with the fan. Or just the sensor issue. Please help!

I feel like I walked into the middle of a conversation.

Just agreed with Michael that indeed we should make this a series. My ignorance is endless and will be happy to display it regarding other aspects of our trade.

We need more content like this.

You do hand on training?

Does this apply to rural wood-fired boilers? Those can't be 90% even if made condensing. But then wood isn't a fossil fuel, so I sure hope these policies don't apply to wood burning appliances.

I can't find the Unoflex 2" x 12" connectors style SS1 for buffer tank, any idea if the speaker specified it properly? Thanks

Why wouldn't you go with R290 since it's a monoblock and all the refrigerant is outside?

Only have a 3-wire in bathrooms.20-40-60- does not work on 3-wire it takes 4 . What can I do ?

HI MICHAEL i had IBC SL30 - 199G3 ID:2 SUPPLY temp135F RETURN temp 133F INLET Pressure 21.6 PSI MBH heat output 32 MBtu only it wont go higher than 32 MBtu since the boiler started.

What are you using to sleeve the joint where the saw cuts are?

Wow! Awesome information. Been in the boiler industry since 1980. Thank you for helping me understand. Awesome. Question for my house. Oil non condensing boiler. Before or after the buffer tank?? All variable speed low (medium... 135f) zones. Concern overheating the buffer tank. Bill (Vermont, USA)

Best comment started by Bob and chimed in Max and host … Lower the load on the home first and foremost … everything else becomes easier thereafter

Should my high and low temperature limits be based on heat differential for the boiler? Or should I leave heat differential to a mixing valve at the boiler? Also, should I use high and low aquastats/temp sensors at the top and bottom of the tank respectively or just have a single aquastat well/sensor in the middle? Thanks!

Can you set to only monitor. Concerned hacker could gain control & lock out. 2nd does it integrate with home assistant

How do I turn the HRV off with the touch screen wall controller .

What is the cost of the Aurora on a 5 series?

Oh my word! I bought a Series 5 Water Furnace from a company that sold their company to another HVAC company before I could commission my Heat Pump. I was getting an NZ-13 ABC Comm Error on my thermostat on Startup. My new HVAC company doesn’t know Water Furnace and just ordered me a new thermostat. I just plugged that in and I get the exact same error. I don’t have an”AID Tool” but I will likely buy my own as it looks like this will fix my problem. Thank you for this video. You gave me the answers that my HVAC company couldn’t.

One odd difference between the USA and Europe/UK is that Heat Pump Water Heaters in the USA generally don't have ducts, whereas those in Europe/UC mostly do. The ductless models benefit from being able to use the heated air from inside the home (so don't have the same problems working in cold climates that the ducted ones have), but they have to heat the water using heat that has been provided by the space heating for the home. So your space heating source and the emitters have to be sized 10-20% larger to provide this heat. The running costs should be about the same, assuming the COPs are all equal.

Am I right in assuming that the choice of panel radiators in the bedrooms was also driven by the floor covering that you are expecting to be used in those rooms, e.g. carpets/underlayment with a high insulation value?

How would you pipe a system with only buffer tank, with single coil heating and cooling fan coil units, and take advantage stratification seasonally?

Air to water monoblock heat pumps for hydronic heating and cooling already exist. Just bring them here in volume. R744, R32 and R290 all work just fine and pose no "fire" risk because they are outside. The technology is already mature. We are just way behind in North America.

Any videos or info for cascading units?

Whats the min turndown on that unit..................30%?

How about setting the speeds w/o the Aurora?

A buffer tank having three ports, inlet outlet recirculation kindly explain how to connect these.

Great info from such a short clip. Installing a new buffer tank on a dual fuel, geo/boiler system tomorrow and I always question the piping decisions made before I get my hands on the system to make permanent changes to it. Do you do local training in the Minneapolis area as well? I would be very interested.Thanks.

Do you a similar training on a HC model

Would setting up a tank with an equal capacity to the rest of the system that is kept at temperature be practical? Tank could be on a thermostat with heating source and radiators and their pumps on a separate thermo.

excellent video, im not sure that made in canada is a feature......

Thank you, great indeed. Please, what software was used to draw these illustrations?

so if I have 1 inch connection and 5/4 inch stove piping I just need to screw a tee for good hydraulic separation ? the wider line on a drawng doesn't mean diameter just proximity to a tank ?

Thank you very much for your videos. How would you configure multiple heat sources, say solar thermal, woodstove, boiler into space heating of radiators and UFH

do you know if an electric tankless will get damaged if the gpm is higher than the tankless normally puts out

Amazing presentation! Really well done. For a geothermal heat-pump system water2water, why is the COP is low? Most advanced European ground source heat pumps are pushing a COP above 5 in these conditions.

And the discussion at about 2:00:00 is right on: Our gas (heating and cooking) annual cost is only about $400, and half of that is the monthly meter charge. So depending on the cost of electric, for us with solar electric mostly, and some grid use off peak, the electric cost/Btu can be as little as half of nat gas $/Btu. Saving a couple hundred $ annually is not going to pay for a new heat pump system very fast, but at least the operating cost is less and there are plenty of other reasons to go all electric.

Thanks for providing these training sessions. As an engineer, and learning HVAC details to improve my home, these are riveting discussions. The boiler protection find a fix is very interesting. I have a 30yr old conventional nat gas boiler hydronic heat, which I've been running at lower and lower temps as I get the home sealed and insulated better. And I've been planning how to change it over to geo or air to water heat pump, potentially keeping the nat gas boiler as backup and since it's not broken. But, yikes, flue gas condensation!

how about a breifing for hot humid places like Florida????

supervideo btw! 'Like*

how does the 3 pipe works compared to a 4 pipe system 2 out and 2 in, with 2 cirk pumps etc, because my system has very smal 10 mm floor heat pipes and requires a high flow rate to both heatpump and floor heat so i was adviced to have 4 pipe system with buffert tank, but i really would like to make the 3 pipe instead, and as you said make the T connection short and fat,, but i wonder how the flow will be affected from the 4 pipe, what do you suggest..i dont see what else can be the difference ?

Two questions: 1) For option 4b, what about running another circulator from the DHW tank back through the heat exchanger? 2) Imagine a conventional non-hydronic home with a DHW tank. Now, add an external heat exchanger to the tank driven by a circulator pump (where the heat pump fluid is on the other side of the heat exchanger driven by a system pump). Is this type of system common? In both of these systems, there is a circulator pump between the DHW tank and heat exchanger. An ideal way to control that pump would be to prevent mixing cold water into the top of the DHW tank. This would probably require a few temperature sensors (cheap) on the HX ports and a variable speed DHW pump. The only hardware I have found that is close to this setup is the Taco X. Doing it with a microcontroller, heat exchanger, temperature sensors, and pump would be my preferred option. Unfortunately, it is hard to source variable speed DHW circulator pumps that can be controlled through PWM or another low voltage input.

Why aren't we using CO2 air to water heat pumps in Canada for hydronic/domestic water heating?

I have a question about the return air plenum requirement: does the requirement described in the video only apply if a suspended ceiling is actually used as a return air plenum? If all the return air is ducted inside the suspended ceiling, does the requirement no longer apply?

Thank you for this great video. As a student of hydronics, I hadn't appreciated that turbulent flow is beneficial in applications where the aim is to transfer heat between the water and the pipe walls.

Is any one watching these in nnj?

This video is a really useful review of many of the possible options for providing DHW using heat pumps. Using supplimental instantaneous water heaters doesn't seem to be a good option because the flow rates that they react to is generally too low for hand basins/sinks. You are also generally using electricity at peak times. In UK, we are starting to see variable rate electricity tarrifs and very flexible PV solar diverters that mean that using immersion heaters to store energy either for DHW production or in the DHW itself is much more economic that using electrity at the point/time of use. I'm coming around to the idea that the arrangement show at 37:01 is probably the ideal. Having a diverter valve on the buffer tank, so that the heat pump can be used for cooling in summer, while still occasionally charging the buffer tank with warm water at a high COP also makes sense as we are seeing higher average summer temperatures in the UK and upscale residential customers are starting to require summer cooling as well as efficient winter heating. The Caleffi LegioMix 2.0 is a great option for a master TMV in larger residences where a recirculation line is needed.