Evaporative Condensers; Enviroguard Systems - Danfoss AK2-SC 255 Reference Manual

Evaporative
condensers
42
Enviroguard
Subcooling target
Deadband
Min sat. cond temp
Min subcooling temp
Elevation (rack to cond)
Open SPR if discharge
Bleed valve
Delay after SPR
Returning to the first page of condenser configuration (from the Main Menu: Configu-
ration, Refrigeration, (select the rack), Condensers. Select Evaporative for the
condenser type. The screen will appear as shown below.
The fields are as follows:
Condenser type
AK2-SC 255 Reference Manual
(List box: Yes, No) Whether or not an Enviroguard
system is being used.
(0.0 to 100.0) The desired number of degrees of
subcooling.
(0.0 to 100.0) The deadband above the target and
below the target in which there will be no control
actions.
(0.0 to 100.0) The saturated condensing temperatuare
below which the system pressure regulator will be off.
(-99.9 to 99.9) The subcooling temperature below
which the system pressure regulator will be off.
(0 to 3000) The total drop distance from condenser to
the rack.
(0.0 to 200.0) The pressure differential above target at
which the system pressure regulator will open.
(List box: Yes, No) Whether or not there is a bleed
valve.
(0 to 10) The number of minutes that must elapse
after the system pressure regulator is turned on before
the bleed relay is energized.
(List box:) This section deals with condenser configu-
ration when the selection Evaporative is made in this
field.
None: There is to be no condenser control by the SC
RS.8D.M1.22