Page 3
Laars Sequencing Controls
SC FUNCTION CHART
LINE
NEUT
OUTPUT 8
OUTPUT 9
OUTPUT 7
OUTPUT 10
OUTPUT 11
OUTPUT 12
INCREMENT
AUTO
OFF
LEAD STAGE
ROTATION
SELECT
SETTING
UP
DOWN
INPUTS
1 2 3 4 5 6 7 8 9 10
SAFETY
GROUND
MUST BE
CONNECTED
11 12
Sensor Com Shield
+
Sensor Com
Dry Contact
Only
Dry Contact
Only
TEMP
SHUTDOWN
/SETBACK
PROVE
/DHW
SYSTEM
Output 7
OFF
AUTO
ON
Output 8
OFF
AUTO
ON
Output 9
OFF
AUTO
ON
Output 10
OFF
AUTO
ON
Output 11
OFF
AUTO
ON
Output 12
OFF
AUTO
ON
OFF
AUTO
ON
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
OUTPUT 6
Output 1
OFF
AUTO
ON
Output 2
OFF
AUTO
ON
Output 3
OFF
AUTO
ON
Output 4
OFF
AUTO
ON
Output 5
OFF
AUTO
ON
Output 6
OFF
AUTO
ON
System
LEAD
OUTPUT ON
4-20 ma
OUTDOOR
SC
Digital display reads
sensor value constantly
Install a relay for
each output stage
which will be active
Use these three buttons
to adjust the settings
In AUTO, the lead stage will automatically
rotate among the active outputs. Press to
INCREMENT for manual rotation.
Each Stage
Output has
one set of
N.O. contacts
The green LEAD stage
light indicates which
stage will be activated
first on a system call
The red OUTPUT lights
indicate when the relays
are energized and the
N.O. contacts are
continuous.
The System
Output is
SPDT
Each output can be switched
ON, AUTO, or OFF. In AUTO,
the output will be controlled
based on system requirements.
120 VAC Power Input
GND must be connected
Sensor, Shutdown/Setback,
Prove/DHW, and Outdoor
input terminals
