Orion System Two Condenser Head Pressure II Module - Manual (Page 3)

Two Condenser Head Pressure II Module Technical Guide
INSTALLATION & WIRING
3
Overview
The Two Condenser Head Pressure II Module (OE370-23-HP2C2)
monitors four individual head pressure transducers and controls two
Condenser Fans or Water Valves on units with two physically separate
condenser sections. The highest reading of head pressure transducers 1
& 2 controls Condenser Signal A. The highest reading of head pressure
transducers 3 & 4 controls Condenser Signal B. If this is a heat pump unit,
the module is able to detect when the unit is in Heat Pump Heating mode
and will force the condenser signal to 100% until it leaves this mode.
The Two Condenser Head Pressure II Module is designed to work
stand-alone by using its OPTIONS dip switch to adjust the Head Pres-
sure setpoint.
The Two Condenser Head Pressure II Module is directly connected to
the VCM-X Modular E-BUS, VCM-X WSHP E-BUS or SA E-BUS
Controller, allowing the Module(s) to receive setpoints from the Con-
troller. See chart on page 2 for part numbers.
When using the Two Condenser Head Pressure II Module with the RNE
Controller, refer to the RNE Controller Technical Guide.
The Two Condenser Head Pressure II Module also provides a pulse
width modulation (PWM) signal or voltage output signal to control the
condenser fans.
The Two Condenser Head Pressure II Module requires a 24 VAC power
connection with an appropriate VA rating.
Module Overview
Figure 1: Two Condenser Head Pressure II Module
Features
The Two Condenser Head Pressure II Module provides the following:

Can be operated stand alone or up to (2) modules can be
daisy-chained together and connected to a VCM-X
Modular E-BUS, VCM-X WSHP E-BUS, or SA E-BUS
Controller

Monitors up to four individual head pressure transducers

Provides control of Condenser Output Signals based on the
highest reading of head pressure transducers

Capable of monitoring a Reverse Valve Signal

Forces Condenser Fans to 100% while in the Heat Pump
Heating Mode
NOTE: The Two Condenser Head Pressure II Module contains
no user-serviceable parts. Contact qualifi ed technical
personnel if your Module is not operating correctly.
ALARM
ANALOG
STAT
COMM
R1
R2
GND
RELAYS
R3
R4
Rc
AO1
AO2
PWM1-
PWM1+
PWM2-
PWM2+
ADDRESS
OPTIONS
+5V
SIG 2
GND
+5V
SIG 3
GND
+5V
SIG 4
GND
+5V
SIG 1
GND
BIN 1
BIN 2
BIN 3
COM
LED BLINK CODES
LED NAME STAT
BLINKS QTY. OF SENSORS INSTALLED
LED NAME ALARM
NO PROBLEMS 0
NO SENSORS DETECTED 1
HIGH HEAD PRESSURE DETECTED 2
LOW HEAD PRESSURE DETECTED 3
WattMaster Label
#LB102110-A
Rev.: 1A
E-BUS
Connector
E-BUS
Connector
+5V
SIG 1
GND
+5V
SIG 2
GND
+5V
SIG 3
GND
+5V
SIG 4
GND
+24
VAC GND
BIN 1
BIN 2
BIN 3
COM
HEAD
PRESSURE
TRANSDUCER #1
HEAD
PRESSURE
TRANSDUCER #2
HEAD
PRESSURE
TRANSDUCER #3
HEAD
PRESSURE
TRANSDUCER #4
REV. VLV. ENABLE INPUT
COMMON
PWM2+
AAON No.:
V20660
AO1
AO2
GND
COND. A ENABLE INPUT
COND. B ENABLE INPUT
COND. A SIGNAL
COND. B SIGNAL
PWM1-
PWM1+
PWM2-
COND. FAN A
COND. FAN B
COND. FAN A
COND. FAN B
GND
Two Condenser Head Pressure II Module
2C2 Orion No.:OE370-23-HP
www.aaon.com
RELA
Y
C
ONT
A
CT
RA
TING
IS
1
A
MP
MAX
@
24
V
A
C
COND. A ENABLE
COND. B ENABLE
REV. VLV. A ENABLE
REV. VLV. B ENABLE
R1
R2
R3
R4
RC RELAY COMMON
A1
A2
B1
B2