help needed to get more from WEL logging
Last Post 16 Feb 2011 02:06 AM by docjenser. 3 Replies.
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gnick540User is Offline
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14 Feb 2011 04:55 PM
I purchased my WEL0222 a year ago - intending to monitor the basic performance of my GSHP and Marathon W/H.   However, I am struggling with the setup and thus far have just barely managed to get the basic WEL operational.  I also installed a WattNode for tracking power on the main panel, the heat pumps, and pool pumps but have not even attempted to make sense of those inputs.

The WEL installations featured on docjenser's Buffalo Geo website are very similar to what I would like to do, but I lack the ability to interpret the WEL instructions provided on Phil's website that would allow me to get beyond where I am now.  I have successfully instrumented my attic temperature (hey, start small and work up) and water heater on/off status and outlet temperature, but can't get the runtime accumulation function to work (nor the WattNode pulse inputs).  I also am unsure how to convert Y1 and Y2 calls from the Intellizone controller into WEL inputs for logging runtime.

Has anyone written a third party manual for the WEL that might be easier for someone like me to understand?

My GSHP equipment list:
WaterFurnace Envision 049
WaterFurnace Envision 038
seven boreholes @ 300 ft using 1" HDPE
location: east Dallas, TX
docjenserUser is Offline
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15 Feb 2011 07:02 PM
The Y1 and Y2 calls are best monitored by the combo module, which is custom made by Phil Malone (the guy behind the WEL). It monitors up to (8) 24V thermostat signals. You can purchase it on his webpage. You then need to change the treatment from "N" to "H" to account for the daily and monthly run time.
www.buffalogeothermalheating.com
gnick540User is Offline
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15 Feb 2011 11:09 PM
That is helpful!  I don't recall seeing that module the last time I visited the WEL pages. 

However, is it not true that I would need TEN channels in order to monitor Y1 and Y2 on five thermostats?  Adding two more channels on each zone controller would further allow me to view the combined logic that controls the actual Heat Pumps, so now we're up to fourteen channels -- thus requiring two of those modules.  Have I got that right?

Thanks again for this info.  Any suggestions for how to better understand how to perform the actual WEL setup?
docjenserUser is Offline
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16 Feb 2011 02:06 AM
No, like everything, the beginning is harder. You can either monitor when the controller turn on the heatpump, or, yes, you can put 2 combo modules onto the bus and you can monitor (8) 24 V signals. Phil has everything in the manual, but it takes a while until you think like a computer. You are down to the basics, doing a lot of programming. Computers are very stupid, they know only yes and no, 5V or 0 volt, but they compensate their stupidity by doing everything very quick.

For example, to have the number 1 to multiply something with, you need to create it first. So you want to monitor not only monthly but yearly run time. So you need to go the "Expressions" and create a virtual sensor with a name (like "one")and then you have to give it a value of 1. Now you can use that 1 and multiply it with the heatpump stage and create a second expression (which again is a virtual sensor), lets say StageY, so that is a exact copy of the on/off sensor called current switch (which you might had named "Stage"). Under "Devises" you can now give the the newly created virtual sensor the treatment letter "Y", which will create 2 counters, ending "_D" and "_M", but because you gave it the treatment letter "Y", it now countsthe monthly accumulation in the "_D" field, and the "_M" field is now the yearly accumulation. That is why you needed the number 1 to create a second status field (Stage_Y), and you did so by copying the original status field ("Stage") by multiplying it by that 1.



All pretty well described by the WEL manual,you just have to find it and understand it. Keep emailing me specific questions, I will be happy to help wherever I can.
www.buffalogeothermalheating.com
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