Heat-Timer® Corporation


Single Set Point Digital Control


The SPC Elite is the perfect control whenever On/Off or two position control is required. The SPC Elite constantly displays the sensor’s value as well as the Set Point to be reached. When the sensor reading falls outside of an adjustable differential, the output relay (S.P.D.T) will energize activating or deactivating the pump, boiler, compressor, valve, or other corresponding equipment until the set point is restored.

The same SPC Elite control can be connected to an array of temperature, pressure, vacuum and humidity sensors. It can even be connected to high temperature sensor up to 900°F (500°C). This makes stocking SPC Elite easier than ever. Each SPC is field selectable for a broad range of parameters. Just select or stock the sensors you need with your control.

The SPC-Elite is the set point perfect control. With S.P.D.T (Single-Pole-Double-Through) it makes it easier for the user to select if the output is Normally Open (N.O.) or Normally Closed (N.C.).

The SPC-Elite is capable of operating in cooling or heating application. The operator simply selects the option suited for the application.

The SPC-Elite is now equipped with External Activation that allows a remote device to enable or disable the SPC-Elite operation.

Can be Powered by 120VAC or 24VAC. The SPC-Elite is normally powered by 120VAC. However, it has an alternative 24VAC power input. No transformers are required.

English or Metric. The same SPC-Elite can be configured to follow either standard. Each with an array of sensor options for versatility.

Mounts on a 1900 Box or a Digi-Elite Wiring Enclosure; with or without a built-in control switch. The flexibility of mounting the control and the use of the optional wiring enclosure, makes this control fit any application need and most tight spaces.

Sensor Fault Output Option. The SPC-Elite offers the option of switching the On or Off when a fault condition occurs.

  • One control can operate in single-stage heating or single-stage cooling.
  • Built-In Enable/Disable (External Activation).
  • Choose the state you want your output to be on a sensor fault.
  • Mounts on a 1900 box or use the provided extension skirt for wall mounting.
  • Multi-Line Digital Display.
  • Can be powered using 120VAC or 24VAC.
  • UL Listed.
SPC-Elite (Without Sensors) 929150-UA
Brass Tube Temperature Sensor 904250-00
3-in-1 Temperature Sensor 904220-00
High Temperature Sensor (up to 900°F) 904019-00
3/8″ x 1/2NPT Well 904011-00
Humidity Sensor 904035-00
Vacuum Sensor 904317-00
Pressure Sensor 0-30 PSI 904310-00
Pressure Sensor 0-100 PSI 904312-00
Pressure Sensor 0-200 PSI 904311-00
Pressure Sensor 0-300 PSI 904313-00
Digi-Elite Wiring Enclosure with a switch 929135-00
Digi-Elite Wiring Enclosure without a switch 929137-00

Why is my control not turning the boiler on even when there is a call for heat?
First, check the display for any messages as many of the heating controls have several external inputs that can be used to shutdown the boiler. If the message relates to the PROVE input, it may not be shorted or the Prove terminal Jumper is not installed. In this case, the control will not start the boiler. If the message relates to the Shutdown input, the Shutdown maybe shorted remotely. If the message relates to the T-stat input, the T-Stat input maybe opened remotely.

My outdoor sensor reading does not match the actual temperature.
The outdoor sensor measurement may vary based on its location and its sun exposure. In most cases it will never match a weather station that is located several miles away. most current Heat-Timer controls have a Trim feature which allows the sensor reading to be slightly modified just a few degrees to satisfy similar circumstances. If the difference was large, then check the sensor by disconnecting one of its wires from the control. The control should read OPEN. If not, contact technical support.

Why is my temperature sensor reading Open on the control display?
Remove the sensor wires from the control and check for continuity across the wires with and meter. If no continuity existed, check or replace the wires. if continuity did exist, then contact technical support.

Why is my temperature sensor reading Short on the control display?
Remove one of the sensor wires from the control. The control display should change and display OPEN. Then check the sensor wiring specifically around spliced areas. If wiring was good, then disconnect the sensor wires from the control and check the sensor wires with an Ohm meter. The readings should match the sensor temperature chart on the control manual. It not, then replace the sensor. If after removing one of the sensor wires the control read SHORT, then contact tech support.

  • Download the TSC Elite in Google Sketchup 3D format by clicking here.
  • Download the Wiring Enclosure Elite in Google Sketchup 3D format by clicking here.

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