AAON Orion VCCX2 User Manual

43
VCCX2 Controller Technical Guide
VCC-X Expansion Module EM1
The VCC-X EM1 Expansion Module connects to the VCCX2
Controller with an EBC E-BUS cable and adds an additional:
ve analog inputs, ve analog outputs, three binary inputs, and
ve congurable relay outputs.
The VCC-X EM1 Expansion Module can be used in conjunction
with the E-BUS 12-Relay Expansion Module. The expansion
modules can be used individually or together to provide the
required inputs and outputs for your specic applications.
Entering Water Temperature Sensor
The Entering Water Temperature Sensor is a 10K ohm Type III
thermistor sensor. The Entering Water Temperature Sensor should
be mounted in the entering water piping.
Return Air Plenum Pressure Sensor
The ASM01832 Return Air Plenum Pressure Sensor (also used
as a Building Static Pressure Sensor, as shown on page 33)
must be wired as shown in Figure 24, this page. There are three
terminal connections on the Pressure Sensor. Connect 24 VAC to
the terminal labeled “+ EXC.” Connect the GND terminal on the
EM1 Expansion Module terminal block to the terminal labeled
“- COM.” Connect the remaining terminal labeled “OUT” to
SIG1 on the EM1.
+ EXC
- COM
Tubing to RA
plenum pressure
sensing location
Tubing to
atmospheric
sensing location
Return/Exhaust
Proof of Flow
Switch
Figure 24: Entering Water Temperature Sensor, Return Air Plenum Pressure & Return/Exhaust Proof of Flow
WIRING
Entering H
2
0 Temp Sensor, RA Plenum, and Return/Exhaust Fan Proving
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
VCCX2 Controller or Return Air Plenum
Pressure Sensor.

AAON Orion VCCX2 Specifications

General

Brand	AAON
Model	Orion VCCX2
Category	Controller
Language	English