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Appendixes
This section contains reference information that is useful when installing, configuring, setting up, or
troubleshooting your PEC Plus.
Appendix A: Glossary below
Appendix B: Troubleshooting on page 77
Appendix C: Factory defaults on page 83
Appendix D: Installation worksheet on page 84
Appendix E: Configuration worksheets on page 86
Appendix F: Settings worksheets on page 89
Appendix A: Glossary
AC power
Utility companies supply electrical power as alternating current, which is referred
to as AC power.
actuator
A device that has a mechanical arm that extends and retracts. Actuators control
elements that are not OFF or ON. Instead, they vary by a percentage. For
example, inlets can be open various distances from 0 to 100 percent.
Typically, linear actuators connect directly to the inlets, or connect using cables
and pulleys. Inlets are usually located in ceilings or walls. Inlet systems are often
spring loaded to help close the inlets, or counter weighted to help open the inlets.
For more information, read Connecting actuators on page 14.
actuator set
point
When the temperature is below the minimum set point, the actuator is closed.
When the temperature rises to the minimum set point, the actuator moves to the
minimum position.
As the temperature rises, the actuator has four stages it moves through until it
reaches its maximum open position. This lets you gradually open inlets instead of
fully opening them when the temperature rises above a single set point.
In other words, “when the temperature is here (stage set point), I want the
actuator to start opening. When the temperature reaches here (stage differential),
I want the actuator to be at this position (stage position) percent.”
For more information, read Programming actuators on page 49.
control
elements
Control elements are devices connected to your PEC Plus, such as fans, heaters,
actuators, and so on.
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