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Revision History
Version 2.2
This is a general upgrade and format change.
Version 2.1
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MicroTech Unit Ventilator Open Protocol
For all memory locations, added Unit Ventilator Model information since not all memory
locations are applicable to all models.
Added missing locations:
Chilled Water Valve Position
Face & Bypass Damper Position
Hot Water Valve Position
Removed Tenant Override Switch from the Read Only section. This memory location was
erroneously included in both the "Read Only" and the "Read and Write" sections.
The Water Out Temperature for Models 2 and 3 has been deleted and replaced with a
refrigerant Suction Line Temperature.
Corrected math errors in determining Run Hours and Compressor Starts.
Corrected explanation for Mixed Air Temp, previous documentation indicated that when the
sensor was not present, the value of the memory location would be 255, this was corrected to
read 254.
Added a summary for Unit Ventilator Model Descriptions.
Updated all references to software program identifications to reflect current software versions.
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