1854 / 1863
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.