Orion System VCC-X Controller - Manual (Page 36)

Zone
Zone
VCC-X CONTROLLER WIRING
VCC-X Controller Technical Guide 36
Modulating Heating Device Wiring
Figure 21: Modulating Heating Device Wiring
24VAC
GND
Line
Voltage
VCC-X Controller
AOUT3
GND
+
_
GND
Modulating Heating/Steam Device
(SCR or Hot Water Valve)
Range of 0 To 10 VDC
Note:
1.) If the Modulating Heating Device Needs
a Relay Signal to Activate, This Can Be
Configured When Setting Up the VCB-X
Controller.
Size Transformer For
Correct Total Load.
VCC-X Controller = 15 VA
Modulating Heating Device
The Modulating Heating Device signal voltage output is a user-
adjustable signal with a range of 0-10 VDC from AOUT3 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 21 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 VCC-X Controller.