Hog Slat Inc. Newton Grove, NC USA May 2024 REV IR 24 Ventilation System ================================================================== 22. CURVES: The temperature SET POINT comes from one of two locations. One location is the manually adjusted value on the MAIN screen or IDLE screen, the second is from a temperature curve which defines the set point based on a day number. The temperature curve is defined by 6 data entries. Each define the day number, temperature and minimum speed ventilation. Temperature set point will decrease proportionally every hour between the set points automatically when the temperature curve is activated. Once the final day entry is reached, the controller will hold that temperature until the temperature curve is re-activated. Rules for entries Highest day entry 999 First day entry must start at the lowest day number. Day number entries must always increase for each of the following data row entries. Typically the highest temperature will be on the first day entry (first row of data) and decrease. However note the temperature entries can increase or decrease. Maximum deviation in temperature between day entries is 4F (2.2C) Minimum ventilation curve follows the same day number as the temperature curve and is active simultaneously with the temperature curve. Minimum ventilation curve sets the minimum speed of the Stage 1 fan for each day entry. 22A: TEMPERATURE/DAY CURVE INPUTS: Press the block for the day entry# or the temperature entry#. A keyboard will pop up to enter the value. Once the value is selected, press enter on the keyboard screen. 22A 22B 22D 22C 22E
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