Danfoss AK2-SC 255 Reference Manual page 69

RTU cooling
configuration, page 2
68
Refer to the screen above.
Ambient temp lockout:
No cooling below
Range +/-
Default fan Speed
Max suction press safety
No cooling above
Freeze protection
Setpoint
Night setback
AK2-SC 255 Reference Manual
(List box: Yes, No) Whether or not there is to be a
lockout based on low outside ambient temperature.
(0.0 to 100.0) The ambient temperature below which
cooling will be locked out.
(0.0 to 9.9) The range selected creates a dead band.
For example, if the lockout is 50 and the range is 2,
cooling will be locked out at 48 and will be allowed on
at 52.
(List box: High Speed, Low Speed) The fan speed for
cooling. A different fan speed can be chosen for
dehumidification when it is configured.
(List box:) Lists every configured pressure sensor.
Any may be selected. Only the suction pressure for the
cooling compressors in this rooftop should be used.
(0.0 to 100.0) The pressure value of the sensor
selected on the previous line at and above which
cooling will be cut out. Cooling will not cut in again
until the pressure falls below this value and the pre
delay specified on the preceding page has elapsed.
(List box:)
Sensor Input: There is a leaving air temperature for
each stage of cooling, near the coil. At and below the
setpoint (next line), the cooling stage will be turned off.
On/Off Input: A single digital input that when ON will
turn off all stages of cooling in the RTU.
None: There is no freeze protection to configure.
(0.0 to 50.0) The temperature, as measured by the
sensor input indicated above, at and below which a
stage of cooling will be turned off.
(List box: Yes, No) Whether or not the cooling
setpoints are to be raised by an offset (next line) during
RS.8D.M1.22