Jumpers - Delta Controls RTS-20 Series Installation & Application Manual

Jumpers

THERMISTOR
OVERRIDE
SETPOINT
DIRECT
REVERSE
Internal Circuit Diagram
THERMISTOR
COMMON
SETPOINT
OVERRIDE
Document Edition 2.3
OVERRIDE CONFIGURATION
The circuit in which the push-button resides is selectable using
the override signal jumper. If the jumper is left in the default
OVERRIDE position, it will short out the separate OVERRIDE
terminal on the thermostat. If the jumper is moved to the
THERMISTOR position, it will short out the thermistor, causing
the read value to be displayed as the highest measurable
temperature. With the jumper is moved to the SETPOINT
position, it will short out the setpoint potentiometer. If moved to
either the THERMISTOR or SETPOINT position, programming
must be used to interpret this short as a depression of the push-
button and not an actual end of scale reading. Note: Do NOT
connect the Override output to the controller unless you have the
jumper in the OVERRIDE position. Doing so may skew the
actual resistance read in the Thermistor or Setpoint inputs.
THERMISTOR
For shorting the reading from the 10kΩ thermistor.
OVERRIDE (Default)
For shorting the signal to the OVERRIDE contact.
SETPOINT
For shorting the signal to the 20kΩ setpoint adjust knob.
SETPOINT CONFIGURATION
The circuit in which the setpoint potentiometer resides can be
configured as Direct or Reverse acting. With the jumper set to
Direct, the resistance will get greater as the dial turns
counterclockwise to the warmer designation. Conversely, if the
jumper is set to Reverse, the resistance will decrease as the dial
turns counterclockwise towards the warmer designation.
10kΩ
100Ω
DIRECT
20kΩ
REVERSE
Delta Controls
THERMISTOR
OVERRIDE
SETPOINT
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