AAON RSMD User Manual

WIRING
RSMD Technical Guide
6
RSMD Wiring
The RSMD monitors and controls one refrigeration circuit of the
HVAC unit. The module is designed for R410-A refrigerant.
The RSMD is connected to the VCC-X or VCCX2 Controller.
Up to 4 RSMD’s can be connected, depending on the size of the
system. There are 2 E-BUS Expansion Ports which allow the use of
communicating sensors and the E-BUS Modules.
The RSMD provides 3 analog inputs, 4 binary inputs, 5 relays, and
2 analog outputs. See Figure 2, below for inputs wiring and Figure
3, page 7 for outputs wiring.
24VAC
GND
Line Voltage
Size Transformer For
Correct Total Load.
RSMD = 18 VA
OE370-26-RSMD
RSM FOR DIGITAL
COMPRESSORS
SP
GND
+V
BK
RD
WH
HP
GND
+V
BK
RD
WH
SUCTION PRESSURE 1
SENSOR
HEAD PRESSURE 1
SENSOR
(BY OTHERS)
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
SUCTION PRESSURE 2
SENSOR
HEAD PRESSURE 2
SENSOR
(BY OTHERS)
TEMP 2
TEMP 3
COMP. DISCHARGE
TEMP. 1 SENSOR
LEAVING WATER
TEMP SENSOR
COMP. DISCHARGE
TEMP. 2 SENSOR
M
ENTER
UP
DOWN
ALARM
MENU
OE370-26-RSMD
RSM FOR DIGITAL
COMPRESSORS
AAON No.: V61520
+24 VAC
GND
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
CONDENSER 1
COMP 1
COMP 2
ANALOG OUTPUTS
REVERSING VALVE
COMMON
RELAY OUTPUT
TERMINALS
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CONDENSER 1
CONDENSER 2
GND
24 VAC
POWER ONLY
WARNING!
POLARITY
MUST BE
OBSERVED
OR THE
CONTROLLER
WILL BE
DAMAGED
CONDENSER 2
SUCTION
PRESSURE 1
SENSOR
HEAD
PRESSURE 1
SENSOR
TEMP
SENSORS
BINARY
INPUTS
+5 V
+5 V
COMP DIS TEMP 1
COMP STATUS 1
SP-1
HP-1
COMP DIS TEMP 2
COMP 2STATUS
GND
GND
OUTSIDE COIL TEMP / POWF
EMERGENCY SHUTDOWN
GND
LEAVING WATER TEMP
GND
SUCTION
PRESSURE 2
SENSOR
HEAD
PRESSURE 2
SENSOR
+5 V
+5 V
SP-2
HP-2
GND
GND
R+
SHD
T-
HH COMMUNICATIONS
E-BUS
R+ SHD T-
DUAL E-BUS
EXPANSION
RSMD Inputs Wiring
Figure 2: RSMD Inputs Wiring
Suction Pressure Sensor Wiring
The OE275-01 Suction Pressure Transducers must be wired as
shown in Figure 2, below. It is typically required for all VCC-X /
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 mode, the VCC-X / VCCX2 resets
the Suction Coil (Saturated) Temperature Setpoint to maintain a
given supply air temperature setpoint. In Dehumidifi cation mode, the
Suction Coil (Saturated) Temperature Setpoint is a user confi gurable
setpoint that can be reset based on indoor humidity levels.

AAON RSMD Specifications

General

Brand	AAON
Model	RSMD
Category	Controller
Language	English