9
RSMV Technical Guide
WIRING
RSMV Outputs Wiring
Head Pressure Control
The RSMV can monitor a Head Pressure Transducer and control
Condenser Fans to maintain a Head Pressure Setpoint. The
Condenser Fan will be controlled with a 0-10 VDC output signal.
Coil Temperature Sensors
Coil Temperature Sensors are used to measure Coil Temperature
after each evaporator coil line. This temperature, combined with the
calculated saturated refrigerant temperature, is used to calculate the
Superheat of each individual evaporator coil. The Superheat is used
to drive the Expansion Valves to maintain a given Superheat Setpoint.
Condenser Configuration Options
Please see
Appendix A
,
page 26
for Condenser Configuration
details.
CAUTION:
The Shraeder port used for installation of the
suction pressure transducer should be located in
a vertical position of the suction line to prevent
refrigerant oil from accumulating in the sensor.
Figure 3: RSMV Outputs Wiring
18-30 VAC
GND
Line
Voltage
Size Transformer For
Correct Total Load.
RSMV = 18 VA
NOTE:
ALL RELAY OUTPUTS ARE NORMALLY
OPEN AND RATED FOR 24 VAC POWER
ONLY - 1 AMP MAXIMUM LOAD
CONDENSER ENABLE
COMPRESSOR 2 ENABLE
COMPRESSOR 1 ENABLE
24 VAC ONLY
RLY1
RLY3
RLY2
COMM
RD
WH
BK
GRN
RD
WH
BK
GRN
EXPANSION
VALVE 1
EXPANSION
VALVE 2
COM
+
MODULATING
COMPRESSOR
COM
+
CONDENSER
FAN SIGNAL
AOUT1
AOUT2
GND
Connect to
VCCX2
Controller
AAON P/N: ASM01686
+24
V
A
C
GND
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
CONDENSER
COMP 1
COMP 2
ANALOG OUTPUTS
COMMON
RELAY OUTPUTS
LABEL P/N:
G042020
MOD COMP SIG
CONDENSER FAN SIG
GND
24 VAC POWER ONLY
WARNING! POLARITY
MUST BE OBSERVED
OR THE CONTROLLER
WILL BE DAMAGED
NOT USED
+5 V
+5 V
COIL TEMP 1
COMP STATUS 1
SP
HP
COIL TEMP 2
COMP STATUS 2
GND
GND
NOT USED
NOT USED
GND
TEMP 3
GND
COIL TEMP SENSORS
BINARY INPUTS
E-BUS
RSM FOR VFD COMPRESSORS
www.aaon.com
SUCTION PRESSURE SENSOR
HEAD PRESSURE SENSOR
E-BUS
EXPANSION
VALVE 1
EXPANSION
VALVE 2
WHITE
BLACK
RED
GREEN
WHITE
BLACK
RED
GREEN
ALARM
UP
DOWN
ENTER
MENU
Summary of Contents for RSMV ASM01686
Page 1: ...RSMV Technical Guide ...
Page 31: ...31 RSMV Technical Guide NOTES ...
