heat-timer Digi-Span TSC Pressure, Installation & Operating Instructions Manual

Page: 6 / 8

6
TSC/TSR OPERATION
Set Point 1
• Set Point 1 controls when Stage 1 is energized or open as
shown in the Example.
• TSC mode - Stage 1 controls the Black output wires (see
pg. 3).
• TSR mode - For the first 12 hours of operation, Stage 1
controls the Black output wires. For the next 24 hours,
Stage 1 controls the Red output wires. Then the control
will switch back to Black and will switch again every 24
hours.
• To adjust Set Point 1, use the following steps:
1. Digi-Span should be displaying sensor pressure.
2. Press the center button and release it. The display will
change to show SP1 . Wait 2 seconds or press the UP
or DOWN button and the set point will be displayed.
3. Press and hold either the UP or DOWN button until the
desired set point is displayed.
4. Wait approximately 10 seconds. If the set point was
changed, the display will flash. Then the Digi-Span will
return to displaying the sensor pressure. (If you don’t
want to wait 10 seconds, press the center button once
for Set Point 2, twice for Differential, three times for
Offset or four times to display sensor pressure.)
Set Point 2
• Set Point 2 controls when Stage 2 is energized or open as
shown in the Example.
• TSC mode - Stage 2 controls the Red output wires (see pg.
3).
• TSR mode - For the first 12 hours of operation, Stage 2
controls the Red output wires. For the next 24 hours, Stage
2 controls the Black output wires. Then the control will
switch back to Red and will switch again every 24 hours.
• To adjust Set Point 2, use the following steps:
1. Digi-Span should be displaying sensor pressure.
2. Press the center button twice and release it. The
display will change to show SP2 . Wait 2 seconds or
press the UP or DOWN button and the set point will be
displayed.
3. Press and hold either the UP or DOWN button until the
desired set point is displayed.
4. Wait approximately 10 seconds. If the set point was
changed, the display will flash. Then the Digi-Span will
return to displaying the sensor pressure. (If you don’t
want to wait 10 seconds, press the center button once
for Differential, twice for Offset or three times to display
sensor pressure.)
NOTE: Set Point 1 does not need to be set above Set Point 2.
Either set point can be any value in the operational
range. See page 3 to set either the Heating or the
Cooling mode.
SET POINT and DIFFERENTIAL EXAMPLE
Set Point 1 60psi
Set Point 2 50psi
Differential 2psi
HEATING MODE
On a drop to 58psi Stage 1 will Energize
Light will Flash
On a further drop to 48psi Stage 2 will Energize
Light is ON
--------------------------------------------------
On a rise to 50psi Stage 2 will Open
Light will flash
On a further rise to 60psi Stage 1 will Open
Light is OFF
COOLING MODE
On a rise to 50psi Stage 2 will Energize
Light will Flash
On a further rise to 60psi Stage 1 will Energize
Light is ON
--------------------------------------------------
On a drop to 58psi Stage 1 will Open
Light will flash
On a further drop to 48psi Stage 2 will Open
Light is OFF
TSC
Stage 1 controls Black output wires
Stage 2 controls Red output wire
TSR
Outputs rotate 12 hours after initial powerup and
every 24 hours thereafter