Danfoss AK2-SC 255 Reference Manual page 89

88
Ambient temp lockout
No air damper below
Control economizer on
Humidity sensor to use
Lockout if outside above
Enthalpy differential
Use CO2 override
Target CO2 amount
Damper Controlled by
Min Damper Position
Max Damper Position
Variable Output range
AK2-SC 255 Reference Manual
is on.
Economizer: Economizer control will be used, based
on either humidity or enthalpy.
Schedule: The air damper will be operated according
to a schedule or schedules (entered on the next page).
CO2 Ctrl: The air damper will be operated based on
the CO2 level in the HVAC unit's zone.
[appears when any control method except economizer
is used] (List box: Yes, No) Whether or not the air
damper is to be locked out based on ambient tempera-
ture.
[appears when any control method except economizer
is used and question above is answered Yes](0.0 to
100.0) The air damper will be locked out below this
temperature.
(List box:) (appears only if economizer control is
selected)
Humidity: The air damper will be controlled based on
humidity.
Enthalpy: The air damper will be controlled based on
calculated enthalpy.
(List box:)
Average: Enthalpy or humidity control will be based
on the average of two zone humidity sensors.
High: Enthalpy or humidity control will be based on
the highest of two humidity sensors.
Zone 1(etc.): (each zone humidty sensor will be
available as a choice in the list) Enthalpy or humidity
control will be based on the single selected humidity
sensor.
(0.0 to 100.0) The air damper will be locked out (shut)
if the outside temperature is above this setting.
(-99.9 to 99.9) In enthalpy control, when outside
enthalpy is less than inside enthalpy by this differential,
the damper will be allowed to open.
(List box: Yes, No) Whether or not damper control is
to be overriden based on CO2 content of inside air.
(0 to 2000) When CO2 override is enabled, the CO2
level at which the damper is allowed open to bring in
fresh air.
(List box:)
Variable Out: The damper is modulated by the RTCs
analog output (variable output).
Relay Output: The damper is opened by a digital
output (relay output).
(0.0 to 100.0) When a variable out is controlling, the
minimum percentage of damper opening allowed.
(0.0 to 100.0) When a variable out is controlling, the
maximum percentage of damper opening allowed.
(List box:) When a variable out is controlling, the
RS.8D.M1.22