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Table 14, Function Ranges and Settings
SP:
dIF: Differential
ASd: Anti-short Cycle_Delay
OFS: Temperature Offset
SF:
NOTES:
Operation at Extremes: If the combination of setpoint, plus or minus the differential, falls
outside the temperature range (-30 to 212°F), the A419 control operates as follows:
Cooling/Cut-in: If the control is operating in Cooling/Cut-in mode and setpoint minus
differential is less than -30°F, the control switches on at setpoint and off when the
temperature drops below -30°F (-34°C).
Heating/Cut-in: If the control is operating in Heating/Cut-in mode and setpoint plus
differential is greater than 212°F (100°C), the control switches on at setpoint and off when
the temperature exceeds 212°F (100°C).
Cooling/Cut-out: If the control is operating in Cooling/Cut-out mode and setpoint plus
differential is greater than 2 12°F (100°C), the control switches on when the temperature
exceeds 212°F (100°C) and off at setpoint.
Heating/Cut-out: If the control is operating in Heating/Cut-out mode and setpoint minus
differential is less than -30°F (-34°C), the control switches on when the temperature drops
below -30°F (-34°C) and off at setpoint.
Setting Other Functions
To set the Differential (dIF), Anti-short Cycle Delay (ASd), Temperature Offset (OFS), or
Sensor Failure (SF) operation, use the following method.
Figure 13, Order of the Functions
26
Function
Setpoint
Sensor Failure
Operation
Direct Drive Fluid Coolers
Range
-30to212° F
(-34 to 100° C)
I to 30° (F or C)
0 to 12 minutes
0 to 50° (F or C)
0 = output de-energized
1 = output energized
Figure 13 illustrates the order of functions shown
using the Up or Down button. The Up button
accesses functions in the clockwise direction; the
Down
button
accesses
counterclockwise direction.
Factory
Setting
30
5
I
0
1
functions
in
the
IOM 1062
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