HEXA

HVAC 83 During Manual operation, the display of blower speed shall be updated to the current blower speed level ( 0-7 ). 2. Temperature selection The temperature selection knob is an encoder that allows the user to select the desired cabin tempera- ture. It shall be possible to select temperatures in the range of 16 o C till 30 o C with a step size of 0.5 o C. The desired temperature selected by the user shall be updated in the display graphics simultaneously as per the rotation of the knob. The set temperature shall be incremented by 0.5 o C, when the tempera- ture knob is rotated through a calibratible no. of detents in the Clockwise direction. Similarly, the set temperature shall be decremented by 0.5 o C, when the temperature knob is rotated through a calibratible no. of detents in the anti-clockwise direction. Automatic temperature control shall be possible in the range 16 o C to 30 o C. If the set temperature is re- duced below 16 o C, it shall activate a Full Cold setting in which the system shall deliver maximum perfor- mance for cooling down. Similarly, if the set temperature is increased above 30 o C, it shall acti- vate Full Hot setting in which the system shall deliver the maximum performance for warming up.  FULL COLD SETTING The system shall adjust the following parameters to enable the Full Cold setting.  Maximum blower speed  Chest distribution mode  Temperature door to Full Cold position  Compressor ON ( Economy setting shall be over- ridden)  Al in Recirculation The display shall show the letter ‘Lo’ ( Cold ) instead of the set temperature value .All the above settings shall be reflected by the control head display.  FULL HOT SETTING The system shall adjust the following parameters to enable the Full Hot setting.  Maximum Blower speed  Leg distribution mode  Temperature door in Full Hot position  Compressor ON ( Economy setting shall be over- ridde n)  AI in Outside Air ( OSA ) The display shall show the letter ‘Hi’ ( Hot ) instead of the set temperature value. All the above settings shall be indicated in the control head display.