Soil color does not affect the behavior and use of soil; however, it can indicate the composition of the soil and give clues to the conditions that the soil is subjected to.ark brown or black color in soil indicates that the soil has a high organic matter content. Wet soil will appear darker than dry soil. However, the presence of water also affects soil color by affecting the oxidation rate. Soil that has a high water content will have less air in the soil, specifically less oxygen.
Re: On coil / off coil temperature. Originally Posted by The Viking First you would have to determine what type of kit you are looking at. In your example above, for the indoor coil, the on coil temp would be 24 degrees for a recirculating unit and 45 degrees for a 100% fresh air unit...e: On coil / off coil temperature. Originally Posted by The Viking First you would have to determine what type of kit you are looking at. In your example above, for the indoor coil, the on coil temp would be 24 degrees for a recirculating unit and 45 degrees for a 100% fresh air unit...
There are many reasons an evaporator or AC coil will freeze: 1  Restricted air flow across the coil will allow the temperature of the coil to drop below 32 degrees F and cause the humidity/condensate to freeze.2  Check the air filter to ensure it is clean. 3  If not, change it. Check the evaporator coil on the intake side and ensure it is clean. 2  If it is dirty and or clogged, then you need to clean it. 3  Be sure to use the correct cleaners and brushes to ensure a proper cleaning. 4  DO NOT USE A WIRE BRUSH.