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VCCX2 Controller Technical Guide
Economizer Damper Actuator
The Economizer Damper Actuator signal voltage output (using
AO2) is user-adjustable, but must be set to 2-10 VDC for this
application. This signal output is used by the VCCX2 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 21,
this page 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 VCCX2 Controller.
Waterside Economizer (WSE) Valve
The WSE valve must be wired as shown in Figure 21, this page
for proper operation. The WSE valve connects to AO2 on the
VCCX2 Controller.
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 VCCX2 Controller.
Waterside Economizer (WSE) Bypass
Valve
The WSE valve must be wired to AO2 on the Refrigeration
System Module for Digital Compressors (RSMD). See the RSMD
Technical Guide for more information.
Figure 21: Economizer Damper Actuator or WSE Valve Actuator Wiring
WIRING
Economizer Actuator or WSE Actuator
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