AAON Orion VCCX2 User Manual

55
VCCX2 Controller Technical Guide
18-30
VAC
GND
Line Voltage
Size ransformer ortf
ctlorrect otal oad.
RSMD = 18 VA
RSMD
SP
GND
+V
BK
RD
WH
HP
GND
+V
BK
RD
WH
SP 1
S
UCTION RESSURE
ENSOR
HP 1
S
EAD RESSURE
ENSOR
COMP STATUS 1
COMP STATUS 2
BIN1
BIN2
GND
BIN3
EMERGENCY SHUTDOWN
TEMP 1
BIN4
OUTSIDE COIL TEMP/POWF
GND
10A250VAC~
5A30VDC
SA
VDE
G5Q-1A4
OMRON
DC12V
CHINA
SP
GND
+V
BK
RD
WH
HP
GND
+V
BK
RD
WH
SP 2
S
UCTION RESSURE
ENSOR
HP 2
S
EAD RESSURE
ENSOR
TEMP 2
TEMP 3
COMP. DISCHARGE
TEMP. 1 SENSOR
LEAVING WATER
TEMP SENSOR
COMP. DISCHARGE
TEMP. 2 SENSOR
Figure 36: RSMD Inputs Wiring
Refrigerant System Module for Digital
Compressors Wiring
The ASM02201 Refrigerant System Module for Digital
Compressors (RSMD) can monitor and control up to two
compressors and condensers. The compressors can be in either
a tandem or non-tandem conguration. The module is designed
for R410-A refrigerant.
The RSMD is connected to the VCCX2 Controller. Up to four
RSMD’s can be connected, depending on the size of the system.
There are two E-BUS Expansion Ports which allow the use of
communicating sensors and the E-BUS Modules.
The RSMD provides three analog inputs, four binary inputs,
ve relays, and two analog outputs. See Figure 36, this page
for inputs wiring and Figure 37, page 56 for outputs wiring.
Suction Pressure Sensor Wiring
The ASM02222 Suction Pressure Transducers must be wired
as shown in Figure 36, this page. It is typically required for all
VCCX2 applications.
The Suction Pressure Sensors are used to measure suction
pressure at the HVAC unit’s DX evaporator coil suction line.
This suction line pressure is converted to saturated refrigerant
temperature. The saturated refrigerant temperature is used to
properly control the compressors to maintain a given Suction
Coil (Saturated) Temperature Setpoint. In Cooling and Heat
Pump mode, the VCCX2 resets the Suction Coil (Saturated)
Temperature Setpoint to maintain a given supply air temperature
setpoint. In Dehumidication mode, the Suction Coil (Saturated)
Temperature Setpoint is a user congurable setpoint that does
not reset.
WIRING
RSMD Controller Inputs

AAON Orion VCCX2 Specifications

General

Brand	AAON
Model	Orion VCCX2
Category	Controller
Language	English