Orion Two Condenser Head Pressure II Module User Manual
Two Condenser
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
Head Pressure II Module
Technical Guide
COND. A ENABLE
RATING IS 1 AMP
RELAY CONTACT
2C2Orion No.:OE370-23-HP
E-BUS
Connector
MAX @ 24 VAC
REV. VLV. AENABLE
COND. B ENABLE
REV. VLV. B ENABLE
RELAY COMMON
COND. A SIGNAL
COND. B SIGNAL
www.aaon.com
Two Condenser Head Pressure II Module
A1
+5V
HEAD
SIG 1
PRESSURE
GND
TRANSDUCER #1
A2
+5V
HEAD
SIG 2
PRESSURE
GND
TRANSDUCER #2
B1
+5V
HEAD
SIG 3
PRESSURE
GND
TRANSDUCER #3
B2
+5V
HEAD
SIG 4
PRESSURE
GND
TRANSDUCER #4
COND. A ENABLE INPUT
BIN 1
REV. VLV. ENABLE INPUT
BIN 2
COND. B ENABLE INPUT
BIN 3
COM
COMMON
WattMaster Label
E-BUS
Connector
#LB102110-A
Rev.: 1A
COND. FAN A
COND. FAN A
COND. FAN B
COND. FAN B
AAON No.:
V20660
GND
PWM1PWM1+
PWM2PWM2+
GND
AO1
AO2
GND
R1
R2
R3
R4
RC
+24 VAC
Zone
TABLE OF CONTENTS
OVERVIEW ....................................................................................................................................... 3
Overview .................................................................................................................................................................. 3
Features ................................................................................................................................................................... 3
INSTALLATION AND WIRING .......................................................................................................... 4
Environmental Requirements ...................................................................................................................................4
Mounting .................................................................................................................................................................. 4
Power Supply ........................................................................................................................................................... 4
Important Wiring Considerations .............................................................................................................................. 4
Stand-Alone Wiring ..................................................................................................................................................5
Condenser Type Selection ....................................................................................................................................... 5
E-BUS Controller to Two Condenser Head Pressure II Module Wiring ...................................................................6
SEQUENCE OF OPERATION ............................................................................................................ 8
Inputs and Outputs ...................................................................................................................................................8
Stand-Alone Input Commands ................................................................................................................................ 8
Input Commands (VCM-X Connection) ................................................................................................................... 9
Modes of Operation ................................................................................................................................................. 9
TROUBLESHOOTING ..................................................................................................................... 12
Head Pressure Module Valve/Fan Position Troubleshooting ................................................................................. 12
Troubleshooting for Stand Alone Mode .................................................................................................................. 13
Pressure Transducer Troubleshooting .................................................................................................................. 14
Using LEDs to Verify Operation .............................................................................................................................14
LED Diagnostics .................................................................................................................................................... 15
Other Checks .........................................................................................................................................................15
Zone
PART NUMBER CROSS REFERENCE TABLE
PART DESCRIPTION ORION AAON
TULSA
Two Condenser Head Pressure II Module - Tulsa OE370-23-HP2C2 V20660 N/A
Two Condenser Head Pressure II Module - Coil OE370-23-HP2C2-C N/A 31426
VCM-X Modular E-BUS Controller - Tulsa OE332-23E-VCMX-MOD-A V07150 N/A
VCM-X Modular E-BUS Controller - Coil OE332-23E-VCMX-MOD-C N/A 30553
VCM-X WSHP E-BUS Controller - Tulsa OE332-23E-VCMX-WSHP-A V07140 N/A
VCM-X WSHP E-BUS Controller - Coil OE332-23E-VCMX-WSHP-C N/A 30526
SA E-BUS Controller - Tulsa OE332-23E-SA-A V07160 N/A
SA Expansion Module - Tulsa OE333-23-SA-A R96180 N/A
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WattMaster Controls Inc.
8500 NW River Park Drive · Parkville , MO 64152
Toll Free Phone: 866-918-1100
PH: (816) 505-1100 · FAX: (816) 505-1101
E-mail: mail@wattmaster.com
Visit our web site at www.orioncontrols.com
Copyright April 2015 WattMaster Controls, Inc.
AAON Manual Part Number: V22100
AAON® is a registered trademark of AAON, Inc., Tulsa, OK.
WattMaster Form : AA-HP2C2-TGD-01E
Neither WattMaster Controls, Inc. nor AAON
assumes any responsibility for errors or omissions in this
document.
This document is subject to change without notice.
®
AAON
COIL
INSTALLATION & WIRING
Module Overview
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 Pressure 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 Controller. 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.
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.
+5V
SIG 1
GND
+5V
SIG 2
GND
+5V
SIG 3
GND
+5V
SIG 4
GND
BIN 1
BIN 2
BIN 3
COM
ADDRESS
www.aaon.com
Two Condenser Head Pressure II Module
A1
+5V
HEAD
SIG 1
PRESSURE
GND
TRANSDUCER #1
A2
+5V
HEAD
SIG 2
PRESSURE
GND
TRANSDUCER #2
B1
+5V
HEAD
SIG 3
PRESSURE
GND
TRANSDUCER #3
B2
+5V
HEAD
SIG 4
PRESSURE
GND
TRANSDUCER #4
COND. A ENABLE INPUT
BIN 1
REV. VLV. ENABLE INPUT
BIN 2
COND. B ENABLE INPUT
BIN 3
COM
COMMON
WattMaster Label
E-BUS
Connector
#LB102110-A
Rev.: 1A
Figure 1: Two Condenser Head Pressure II Module
COND. A ENABLE
REV. VLV. AENABLE
COND. B ENABLE
REV. VLV. B ENABLE
MAX @ 24 VAC
RATING IS 1 AMP
RELAY CONTACT
RELAY COMMON
2C2Orion No.:OE370-23-HP
COND. A SIGNAL
COND. B SIGNAL
COND. FAN A
COND. FAN A
COND. FAN B
COND. FAN B
LED BLINK CODES
LED NAME STAT
BLINKS QTY. OF SENSORS INSTALLED
LED NAME
NO PROBLEMS 0
NO SENSORS DETECTED 1
HIGH HEAD PRESSURE DETECTED 2
LOW HEAD PRESSURE DETECTED 3
E-BUS
Connector
AAON No.:
V20660
GND
PWM2PWM2+
ALARM
AO1
AO2
GND
PWM1PWM1+
GND
R1
AO1
AO2
GND
PWM1-
PWM1+
PWM2-
PWM2+
R1
R2
R3
R4
Rc
RELAYS
ANALOG
OPTIONS
ALARM
STAT
COMM
R2
R3
R4
RC
+24 VAC
Two Condenser Head Pressure II Module Technical Guide
3
INSTALLATION & WIRING
Mounting and Wiring Considerations
Zone
Zone
Environmental Requirements
The Two Condenser Head Pressure II Module needs to be installed in
an environment that can maintain a temperature range between -30°F
and 150°F and not exceed 90% RH levels (non-condensing).
Mounting
The Two Condenser Head Pressure II Module is housed in a plastic
enclosure. It is designed to be mounted by using the 3 mounting holes
in the enclosure base. It is important to mount the module in a location
that is free from extreme high or low temperatures, moisture, dust, and
dirt. Be careful not to damage the electronic components when mounting the module.
See Figure 2 for Module dimensions (in inches).
0.18 DIA. TYP.
Important Wiring Considerations
Please read carefully and apply the following information when wiring
the Two Condenser Head Pressure II Module:
1. To operate the Two Condenser Head Pressure II Module, you
must connect power to the 24 VAC input terminal block.
2. Each Pressure Transducer must have its own 18-gauge
shielded twisted pair cable. The Drain Wire must be the “Gnd”
signal for the transducer.
3. When the Analog Output is being used to control the
Condenser Fan Speed or Water Valve Percentage, the cable
must be 18-gauge shielded wire, and the Drain Wire must be
the “Gnd” signal.
4. If the Pulse Width Modulation (PWM) Output is being used to
directly control the ECM 142 motor, the wires do not need to
be shielded and can be any 18-gauge wire.
5.71
5.64
5.04
ADDRESS
+5V
SIG 1
GND
+5V
SIG 2
GND
+5V
SIG 3
GND
+5V
SIG 4
GND
BIN 1
BIN 2
BIN 3
COM
www.aaon.com
Two Condenser Head Pressure II Module
A1
+5V
HEAD
SIG 1
PRESSURE
GND
TRANSDUCER #1
A2
+5V
HEAD
SIG 2
PRESSURE
GND
TRANSDUCER #2
B1
+5V
HEAD
SIG 3
PRESSURE
GND
TRANSDUCER #3
B2
+5V
HEAD
SIG 4
PRESSURE
GND
TRANSDUCER #4
COND. A ENABLE INPUT
BIN 1
REV. VLV. ENABLE INPUT
BIN 2
COND. B ENABLE INPUT
BIN 3
COM
COMMON
WattMaster Label
E-BUS
#LB102110-A
Connector
Rev.: 1A
REV. VLV. AENABLE
REV. VLV. B ENABLE
MAX @ 24 VAC
RATING IS 1AMP
RELAY CONTACT
2C2Orion No.:OE370-23-HP
LED NAME STAT
BLINKS QTY. OF SENSORS INSTALLED
LED NAME
NO PROBLEMS 0
NO SENSORS DETECTED 1
HIGH HEAD PRESSURE DETECTED 2
LOW HEAD PRESSURE DETECTED 3
E-BUS
Connector
2.07
COND. A ENABLE
COND. B ENABLE
RELAY COMMON
AAON No.:
COND. A SIGNAL
COND. B SIGNAL
GND
COND. FAN A
COND. FAN A
COND. FAN B
COND. FAN B
LED BLINK CODES
V20660
GND
PWM1PWM1+
PWM2PWM2+
ALARM
GND
AO1
AO2
0.29
R1
R1
R2
R2
R3
R3
R4
R4
RC
Rc
RELAYS
ANALOG
AO1
AO2
GND
PWM1-
PWM1+
PWM2-
PWM2+
OPTIONS
+24 VAC
ALARM
STAT
COMM
0.55
4.14
Figure 2: Two Condenser Head Pressure II Module Dimensions
4
Two Condenser Head Pressure II Module Technical Guide
INSTALLATION & WIRING
Stand-Alone Wiring
5. Check all wiring leads at the terminal block for tightness.
Be sure that wire strands do not stick out and touch adjacent
terminals. Confi rm that all transducers required for your
system are mounted in the appropriate location and wired into
the correct terminals.
WARNING: Be sure all controllers and modules are
powered down before connecting or
disconnecting HSSC cables.
OE370-23-HP2C2
Two Condenser Head Pressure II Module
Head Pressure Transducers
0 - 667 PSI
(One Per Refrigerant Circuit)
+V
RD
SIG
WH
GND
BK
+V
RD
SIG
WH
GND
BK
+V
RD
SIG
WH
BK
GND
+V
RD
SIG
WH
BK
GND
CONDENSER A ON/OFF
REVERSING VALVE A/B ON/OFF
CONDENSER B ON/OFF
COM
Set ADDRESS Dip Switch 1 to ON
for Water Cooled or to OFF for Air
Cooled. Currently showing OFF for
Air Cooled.
ADDRESS Dip Switch 2 is not used
in this application..
Set ADDRESS Dip Switch 3 to ON
to disable Circuit B alarms when
only one Condenser is Used.
Currently showing OFF.
Set ADDRESS Dip Switch 4 to OFF
to make reversing valve "ON to
Heat / OFF to Cool.” Set to ON to
make reversing valve “ON to Cool /
OFF to Heat.” Currently showing
OFF.
ADDRESS
PWR
BIN 1
BIN 2
BIN 3
COM
+5V
SIG 1
GND
+5V
SIG 2
GND
+5V
SIG 3
GND
+5V
SIG 4
GND
www.aaon.com
Two Condenser Head Pressure II Module
+5V
SIG 1
GND
+5V
SIG 2
GND
+5V
SIG 3
GND
+5V
SIG 4
GND
COND. AENABLE INPUT
BIN 1
REV. VLV. ENABLE INPUT
BIN 2
COND. B ENABLE INPUT
BIN 3
COM
COMMON
E-BUS
Connector
A1
HEAD
PRESSURE
TRANSDUCER #1
A2
HEAD
PRESSURE
TRANSDUCER #2
B1
HEAD
PRESSURE
TRANSDUCER #3
B2
HEAD
PRESSURE
TRANSDUCER #4
WattMaster Label
#LB102110-A
Rev.: 1A
Stand-Alone Wiring
To operate the Two Condenser Head Pressure II Module as Stand Alone,
connect the Module to a 24 VAC connection with an appropriate VA
rating. See Figure 3 for wiring.
Check all wiring leads at the terminal block for tightness. Be sure that
wire strands do not stick out and touch adjacent terminals. Confi rm that
all transducers required for your system are mounted in the appropriate
location and wired into the correct terminals.
Condenser Type Selection
As shown in Figure 3, set ADDRESS Dip Switch 1 to ON for water
cooled or to OFF for air cooled. Refer to page 8 for further instructions.
NOTE:
ALL RELAY OUTPUTS
NORMALLY OPEN AND
ARE
RATED FOR 24 VAC POWER
- 1 AMP MAXIMUM LOAD
ONLY
AAON No.:
V20660
GND
GND
PWM1PWM1+
PWM2PWM2+
ALARM
GND
AO1
AO2
GND
R1
R2
R3
R4
RC
+24 VAC
24 VAC
COND. AENABLE
REV. VLV. AENABLE
COND. B ENABLE
REV. VLV. B ENABLE
MAX @ 24 VAC
RATING IS 1AMP
RELAY CONTACT
RELAY COMMON
2C2Orion No.:OE370-23-HP
COND. ASIGNAL
COND. B SIGNAL
COND. FANA
COND. FANA
COND. FAN B
COND. FAN B
LED BLINK CODES
LED NAME STAT
BLINKS QTY. OF SENSORS INSTALLED
LED NAME
NO PROBLEMS 0
NO SENSORS DETECTED 1
HIGH HEAD PRESSURE DETECTED 2
LOW HEAD PRESSURE DETECTED 3
E-BUS
Connector
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.
R1
R2
R3
R4
Rc
AO1
AO2
GND
PWM1-
PWM1+
PWM2-
PWM2+
RELAYS
ANALOG
COMM
OPTIONS
ALARM
STAT
COMM
24 VAC Transformer
3 VA Minimum
R1
R2
R3
R4
YELLOW
BLUE +24 OUT
YELLOW
BLUE +24 OUT
HVAC UNIT CONNECTION
CONDENSER A ENABLE
REVERSING VALVE A ENABLE
CONDENSER B ENABLE
REVERSING VALVE B ENABLE
Condenser
Condenser
+
COM
Condenser Fan A
ECM Motor
Duty Cycle
+24 Volts
Condenser Fan B
ECM Motor
Duty Cycle
+24 Volts
OPTIONS Dip Switch is
Used for Setting the Head
Pressure Setpoint if Not
Using Default Setpoint.
Line Voltage
Signal A
+
COM
Signal B
Figure 3: Two Condenser Head Pressure II Module Wiring Diagram (Stand-Alone)
Two Condenser Head Pressure II Module Technical Guide
5
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