Orion System RNE Modular Controller - Manual (Page 40)

Zone
Zone
INSTALLATION AND WIRING
RNE Modular Controller Field Technical Guide 40
AO1
AO2
+5V
SIG 2
GND
OPTI
O
N
S
ALARM
ANALOG
STAT
+5V
COMM
GND
SIG 4
GND
BIN 2
R1
R2
GND
RELAYS
ADDRESS
SIG 3
+5V
GND
BIN 1
COM
+5V
SIG 1
R3
R4
Rc
AO1
AO2
PWM1-
PWM1+
PWM2-
PWM2+
OE275-01 Suction
Pressure Transducer 2
OE370-23-FD-A
Full Digital Module
This Dip
Switch Is Not
Used For This
Application
This Dip
Switch Is Not
Used For This
Application
PWR
Connect To RNE Controller
Connect To
Head Pressure Module
HSSC Cable
24 VAC Transformer
3 VA Minimum
Line Voltage
24 V
A
C
GND
WARNING!!
Observe Polarity! All
boards must be wired
with GND-to-GND and
24 VAC-to-24 VAC.
Failure to observe
polarity could result in
damage to the boards.
HSSC Cable
NOTE:
NORMALLY OPEN AND
RATED FOR 24 VAC POWER
ALL RELAY OUTPUTS
ARE
COMPRESSOR 2 ENABLE
COMPRESSOR 1 ENABLE
R1
R2
ONLY. 1 AMP MAXIMUM LOAD.
HVAC UNIT CONNECTIONS
SIG 2
GND
+V
BK
RD
WH
SIG 1
GND
+V
BK
RD
WH
OE275-01 Suction
Pressure Transducer 1
COM
+
Compressor 2
COM
+
Compressor 1
Full Digital Module
RNE Units with DX Cooling will have either a Half VFD/Half Fixed
compressor confi guration or a Full VFD compressor confi guration. The
RNE 55 - 105 Ton units have two compressors and will have either one
VFD and one Fixed Compressor or will have two VFD Compressors.
The operation of these compressors is described in the Sequence of
Operation section of this manual.
If this is not a Water Source Heat Pump unit, the outputs to the com-
pressors will always be wired from the Full Digital Module ( OE370-
23-FD-A). Each compressor will need to have a relay confi gured and
wired from this module and the VFD output(s) will be wired from this
module. Each compressor will also have a Suction Pressure Transducer
wired into this module. See Figure 32 below for the wiring diagram.
RNE 55 - 105 Ton Unit Compressor and Condenser Wiring
The Full Digital Module connects to the RNE Controller or the Two
Condenser Head Pressure Module with an HSSC Cable. This allows
setpoints, status values, and alarms to be communicated between the
RNE Controller and the Full Digital Module. This module requires a
24 VAC power connection with an appropriate VA rating.
NOTE: The Compressor Relays on the Full Digital Module are
used rather than the relay outputs on the RNE Control-
ler.
NOTE: For more information, see the Full Digital Module
Technical Guide on our website orioncontrols.com.
Figure 32: RNE 55 - 105 Ton Unit Two Compressor Full Digital Wiring