Zone
Zone
INSTALLATION & WIRING
VCB-X Controller Field Technical Guide
34
Economizer Actuator Wiring
Figure 20: Economizer Damper Actuator Wiring
Typical
2-10 VDC
Output
Belimo Actuator Wiring
Shown. Consult Factory
For Other Manufacturer
24 VAC
Economizer Damper Actuator
(By Others - Belimo Actuator Shown)
3 Y1
2
1 - COM
+
GND
AOUT2
GND
24VAC
GND
Line
Voltage
Size Transformer For
Correct Total Load.
VCB-X Controller = 8 VA
ED
THE
NTROLLER
WILL BE
DAMAGED
E-BUS
EXPANSION
E-BUS
EXPANSION
24 VAC
INPUT
VCB-X Controller
Economizer Damper Actuator
The Economizer Damper Actuator signal voltage output (using
AOUT2) is user-adjustable, but must be set to 2-10 VDC for this
application. This signal output is used by the VCB-X Controller
to modulate the Economizer Damper Actuator in order to control
the amount of Outdoor Air delivered to the HVAC unit for Free
Cooling and/or Indoor Air Quality requirements. See
Figure 20
for
detailed wiring.
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 will result in damage to the actuator
or
VCB-X
Controller.
