Question about Shaw Robert RS-9420 Thermostat
OK is this a good or bad thing.
Posted on Jul 15, 2015
The double snowflake means that the second stage cooling is on. (One snowflake indicates first stage cooling.) This gives a greater temperature change in extremely hot conditions with than you could get with a single cooling medium and drier air in your home.
From the patent: A two stage cooling system in which the first stage's cooling affect is transferred to the second stage through direct contact with an oil-like material. The oil-like material is cooled by direct contact with water which has been evaporatively cooled. The oil-like material is then utilized to cool the air stream prior to the second stage evaporative cooling. The use of an oil-like material in the first cooling stage of evaporative cooling allows a relatively dry air stream to be produced so as to fully capitalize upon the evaporative cooling affect of the second stage cooler.
The second stage comes on if your system hasn't reached the desired temperature at the thermostat within a programmed length of time (5 minutes is a usual setting). BTW: Your system also has two stage heating.
I hope this helps.
Posted on Jul 07, 2010
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Posted on Jan 02, 2017
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