Excellent video. You are a great teacher. I would like to point out a small clerical error at 17:00 . It's 55-60 on a 90 degree indoor temp, not 60-65 . The pressures will also be adjusted. Cheers.
I took a little me time over the summer. Tried to go flounder gigging and forgot all about hvac...but it is back to business. I'm gonna check in on you one day over there!
Thank you. You are too kind sir. I think we can get around to some heat mode checks on heat pumps...just give it a little while and let some cooler weather move in the area.
Most definitely. Just trying to put a little something out there on it. I know it takes a while to get it but I can probably count on my hands how many times I saw a perfectly 40 degree saturation point. Like you said...airflow, heat, humidity, etc. all go into it.
All those examples are just for residential equipments, what about RTU can we apply the same principles or varies in something, thanks for sharing your knowledge
If it is a comfort cooling type of system then you should be able to use the process. Of course a true refrigeration system for ice cream or something is different. But in any compression refrigeration cycle you have to have the basic things happening though...heat being absorbed and heat being rejected. I try to tell the younger guys I deal with that I am not trying to teach you what to memorize but more so how to start learning it. You can easily come up with different numbers for your SEER rating factors, etc... but when you do that out in the field you just gotta keep up with it. What will happen is that you will start to transition from a memorized/book learned thing into a field learned/experience thing because you are paying attention to what you are seeing and also doing to fix it. Sorry for the long wind. I appreciate you commenting and checking it out. Thanks
Great video, thank you so much for it. I have a quick question, on the thermostat we have it set to 60 on cool. Does that mean that my saturation temperature on the coil will be 30 degrees qi==with the freezing point being 32 degrees?
Yes, if you set the thermostat too low you could end up with a saturation temp that is below freezing...on another point, I wish my wife would let me keep it on 60! Thanks for commenting.
I can usually find something by googling the "make, 4 to 5 digits of the model, then "specs". So something like "goodman gsz13 specs. It works most of the time but I haven't tried it on a VRF system.
@@johnjennings-JJ That's excellent and thank you again.I am still a student of the field here in the UK.Very limited resources here I must admit.We always have to rely to ever giving American HVAC engineers.There is roles here hi by names like HVAC engineer's mate..just imagine...I kindly ask with time if possible you do another video with more contents on evaporator 's DTD for a range of refrigeration equipments and how we use it to diagnose temperature /pressure related problems .Id possible please use Celsius as temp.scale unit.Thank you
Thanks for checking us out then. I do have some refrigeration equipment that I had wanted to get on for a video so I will keep you in mind and I'll try to put up the Celsius info too. I have only used Celsius when I worked at a hospital...messed my head up a little!
