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Bergy
Basic Member
Posts:277
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| 28 Jan 2010 10:06 AM |
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Posted By geome on 01/27/2010 2:54 PM
Bergy, when you say "500 for pure water and 485 for anti-freeze." is the 485 figure used for anti-freeze regardless of the water/anti-freeze mix? Thanks Geome, As far as I know it is. However, I've never worked outside of my geographical area so it may not hold true for others. Bergy
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geotek
Basic Member
Posts:154
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| 29 Jan 2010 07:54 AM |
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485 is used for all antifreeze mixtures nationally.
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engineer
Veteran Member
Posts:2749
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| 29 Jan 2010 08:20 AM |
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Note that the diff between 485 and 500 is trivial ~ 3%. Much greater errors are introduced by uncertainty of flow measurements |
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Curt Kinder <br><br>
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
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WF_Inc.
New Member
Posts:88
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| 29 Jan 2010 09:23 AM |
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bonnie,
We have read through your comments regarding the condensation. We would like the opportunity to investigate your issue further. Please provide us with your serial number and the name of your installing contractor.
You also mentioned concerns about your electric bills. What type of equipments was used to heat and cool the home prior to installing the geothermal? Also, did the installing contractor provide you with an energy analysis? If so, please provide this information for us to review.
WaterFurnace International, Inc. |
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geome
Advanced Member
Posts:987
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| 29 Jan 2010 09:54 AM |
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It is very nice to see WF here and trying to help their customers. I was a bit skeptical at first when WF first started posting (elsewhere) because their initial replies to customer posts were to sell them more WF products (like air filters and new systems). Sometimes customers reach a dead end with installers and have no where else to turn. I think you will find that actively helping customers on these forums will sell more of your products than you imagine. Well done.  |
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| Homeowner with WF Envision NDV038 (packaged) & NDZ026 (split), one 3000' 4 pipe closed horizontal ground loop, Prestige thermostats, desuperheaters, 85 gal. Marathon. |
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geotek
Basic Member
Posts:154
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| 29 Jan 2010 10:04 AM |
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Note that the diff between 485 and 500 is trivial ~ 3%. Much greater errors are introduced by uncertainty of flow measurements
That's a very good point engineer.
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geome
Advanced Member
Posts:987
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| 29 Jan 2010 10:08 AM |
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Posted By engineer on 01/29/2010 8:20 AM
Much greater errors are introduced by uncertainty of flow measurements Do you mean getting accurate pressure readings to calculate the flow properly?
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| Homeowner with WF Envision NDV038 (packaged) & NDZ026 (split), one 3000' 4 pipe closed horizontal ground loop, Prestige thermostats, desuperheaters, 85 gal. Marathon. |
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Bergy
Basic Member
Posts:277
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| 29 Jan 2010 11:50 AM |
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Correct...You should use just one thermometer and just one pressure gauge. Any calibration errors are the same between the input and output readings and will not affect the accuracy of the pressure or temperature readings.
Bergy
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engineer
Veteran Member
Posts:2749
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| 29 Jan 2010 02:30 PM |
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The trouble with determining flow via Delta P across coax is that an error of just a half pound or so makes a significant difference in the calculated GPM |
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Curt Kinder <br><br>
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
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geome
Advanced Member
Posts:987
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| 29 Jan 2010 03:05 PM |
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Posted By engineer on 01/29/2010 2:30 PM
The trouble with determining flow via Delta P across coax is that an error of just a half pound or so makes a significant difference in the calculated GPM Any recommendations other than Bergy's advise to use the same gauge?
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| Homeowner with WF Envision NDV038 (packaged) & NDZ026 (split), one 3000' 4 pipe closed horizontal ground loop, Prestige thermostats, desuperheaters, 85 gal. Marathon. |
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engineer
Veteran Member
Posts:2749
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| 29 Jan 2010 10:59 PM |
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Use a guage with lowest possible full scale. Reading 2-3 pounds of difference across in and out ports of a typical geo system is hard to get right with a typical 0-100 or 0-60 guage.
Bergy's right, nonetheless. |
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Curt Kinder <br><br>
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
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