Installation & wiring, Modulating heating device wiring – Orion System SA Controller User Manual
Page 26
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Zone
Installation & Wiring
SA Controller Technical Guide
26
Modulating Heating Device
The Modulating Heating Device signal can be confi gured for either a
0-10 VDC or 2-10 VDC output signal when programming the controller.
The output signal can be confi gured for either Direct Acting or Reverse
Acting operation as required.
The Output signal is normally used to control a Modulating Hot Water
Valve or Modulating Steam Valve or is used for SCR Control of an
Electric Heating Coil.
See Figure 22 below for detailed wiring of the Modulating Heating
Device.
Warning: It is very important to be certain that all wiring is
correct as shown in the wiring diagram below. Failure to observe the
correct polarity could result in damage to the Modulating Heating
Device or the SA Expansion Module.
Figure 22: Modulating Heating Device Wiring
Modulating Heating Device Wiring
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