4
A419ABG-3 Electronic Temperature Control Installation Instructions
To position a jumper in the
Installed
position, place
the jumper on both pins, which closes the circuit
between the pins. To position a jumper in the
Removed
position, place the jumper on one pin only.
See Figure 4.
Jumper
Pins
Removed
(Jumper Positioned on One Pin)
Installed
(Jumper Positioned on Both Pins)
=
=
Figure 4: Positioning the Jumpers
P5
P4
Touchpad
Locked
Heating Mode
Cut-in at Setpoint
Heating Mode
Cut-out at Setpoint
Cooling Mode
Cut-out at Setpoint
Cooling Mode
Cut-in at Setpoint
JUMP2
Figure 5: Jumper Positions and Control Settings
The A419 Control Functions
Setpoint
(SP
)
establishes the temperature value at
which the equipment is switched on or off, depending
on the user selected mode of operation. Setpoint
range is -30 to 212°F or -34 to 100°C (in 1-degree
increments).
If Setpoint mode is set to cut-in, setpoint is the
temperature value at which the control closes the
Normally Open (N.O.) contacts. If Setpoint mode is set
to cutout, setpoint is the temperature at which the N.O.
contacts open.
Differential
(
dIF
) establishes the difference in
temperature between the cut-in value and cutout
value. The differential is set relative to Setpoint and
may be set from 1 to 30 F° or C° (in 1-degree
increments).
Anti-Short Cycle Delay
(
ASd
) establishes the
minimum time that the output relay remains
de-energized before the next on-cycle. The
ASd
does
not allow the output relay to re-energize until the
programmed time delay has elapsed. The delay is
activated when the control is first turned on and every
time an on-cycle ends. When the delay is activated,
the LCD alternately flashes the sensor temperature
and
ASd
. The Anti-short Cycle Delay range is
0 to 12 minutes (in 1-minute increments).
Sensor Failure Operation
(
SF
) establishes how the
A419 control’s output-relay operates the equipment in
the event of a sensor or sensor wiring failure. The user
may select to run the equipment continuously or to
shut it down. When the control detects a sensor circuit
failure, the LCD flashes
SF
alternately with
OP
(if the
sensor circuit is open), or
SH
(if the sensor circuit is
shorted). Before indicating a failure, the control
implements a 1-minute delay, which allows verification
of failure condition and avoids nuisance failure
indications.
Table 2: Jumper Designations, Jumper Positions, and Control Settings
Function
Jumper Pins Designation
on Control
Setting
Jumper
Position
Factory Default Setting
(and Jumper Position)
Cooling Mode
Removed
Cooling/Heating
Operating Mode
JUMP1
(Top Pair of Pins on Block P4)
Heating Mode
Installed
Cooling Mode
(Jumper Removed)
Setpoint
at Cut-in
Removed
Setpoint at
Cut-in or Cutout
JUMP2
(Bottom Pair of Pins on Block P4)
Setpoint
at Cutout
Installed
Cut-in
(Jumper Removed)
Touchpad Lock
P5
Locked
Removed
Unlocked
(Jumper Installed)
