Bulletin 100-50-11.1 –
Page 3
1. Introduction
The SCS family is an electronic superheat controller solution that is designed for refrigeration applications using
either a Pulse Width or Stepper type expansion valve. It is designed to be mounted within the refrigerated space
for ease of installation on existing equipment. SCS-PB is designed to operate pulse valves, while the SCS-SB
is designed to operate stepper valves. Each of the controller types include a coil outlet temperature sensor,
and connectors for the valve and pressure sensor compatible with Sporlan valves and pressure sensors and
a 110/120-220/240 VAC power connection.
2. Installation
Tools required:
• Mobile iOS device with Bluetooth LE capability and
either cellular or Wi-Fi connectivity
• Small flat screwdriver (for Pulse Valve connector)
• Wire cutters
• Two #10 (5mm) mounting screws
• Magnet or magnetized screwdriver
• Scotch-Brite
™
pad
1. The SCS should be mounted in a UV protected
location where the mounting location will be
between -22°F and 120°F (-30°C and 50°C). The
controller and connections should be hermetically
sealed so the controller can be installed in wet
environments. Take care not to mount the unit in
such a way that it would block any air curtains of
a refrigerated display case. Mount the unit in such
a way that the Bluetooth ID on the label is visible
for ease of connecting to the unit via Bluetooth.
The controller MUST be mounted on a flat surface.
Mounting the controller on a surface that is not
flat or bends may cause damage to the controller.
Recommended torque varies by material, 13 to 17
in-lbs (1.47 to 1.92 Nm) should be sufficient.
2. Mount the coil outlet sensor that is included with
the SCS on the outlet of the evaporator coil. See
Appendix C for details.
3. Mount the suction pressure sensor and connect
the transducer cable. See Appendix C for details.
4. Connect the valve. If using a stepper valve, connect
the M12 connection to the valve and tighten to 10-
14 in-lbs. (1.13 to 1.58 Nm). If using a pulse valve,
connect the DIN connector to the pulse valve.
Tighten the DIN connector mounting screw to 3.5
in-lb (0.40 Nm).
5. Connect the power wires. The power connection
does not come with any connectors, so the con-
nection to power must be made in compliance
SCS-PB
Pulse System Control
SCS-SB
Step System Control