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Two Condenser Head Pressure II Module Technical Guide

8

INSTALLATION & WIRING

E-BUS Controller to Two Condenser Head Pressure II Module Wiring

WARNING:

  

Be sure all controllers and modules are 

powered down before connecting or 

disconnecting HSSC cables.

Figure 4:  VCM-X E-BUS Controller to Two Condenser Head Pressure Module II Wiring Diagram (continued)

SIG

GND

+V

BK

RD
WH

SIG

GND

+V

BK

RD
WH

SIG

GND

+V

BK

RD
WH

SIG

GND

+V

BK

RD
WH

Head Pressure Transducers

0 - 667 PSI

(One Per Refrigerant Circuit)

OE370-23-HP2C2

Two Condenser Head Pressure II Module

OPTIONS Dip Switch Setting Not Required

When Connected To

VCM-X E-BUS Controller

or SA E-BUS Controller

+5V

SIG 2

GND

OPTION

S

ALARM

ANALOG

STAT

+5V

COMM

GND

SIG 4

GND

R1

R2

GND

RELAYS

SIG 3

+5V

GND

+5V

SIG 1

R3

R4

Rc

AO1

AO2

PWM1-

PWM1+

PWM2-

PWM2+

PWR

Connect To Other

WattMaster-Approved

E-BUS Expansion Module(s)

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.

NOTE:

NORMALLY OPEN AND

RATED FOR 24 VAC POWER
ONLY - 1 AMP MAXIMUM LOAD

ALL RELAY OUTPUTS

ARE

Line Voltage

All Comm Loop Wiring Is

Straight Thru

24VAC

GND

Local Loop

RS-485

9600 Baud

See Individual

Component Wiring

Diagrams For

Detailed Wiring Of
Analog Inputs And

For Stand Alone Applications,

Connect To System Manager. For Network

Applications Connect To Next Controller

And/Or MiniLink PD On Local Loop.

G - Fan ON/OFF  Only

R - 24VAC

Relay Output Contacts
R2 Through R5 May Be User-Configured
For The Following:
1 - Heating Stages
2 - Cooling Stages
3 - Warm-up Mode Command  (VAV Boxes)
4 - Reversing Valve (Air To Air Heat Pumps)
5 - Reheat Control (Dehumidification)
6 - Exhaust Fan Interlock
7 - Preheater For Low Ambient Protection
8 - Alarm
9 - Override
10 - Occupied
11 - OA Damper
12 - Heat Wheel
13 - Emergency Heat
Note: 1.) When Using the HP2C Module,
All Compressors Will Be Wired From the
Protection Module, Not the VCM-X Controller.
Note: A Total Of 20 Relays Are Available By
Adding Relay Expansion Modules. All
Expansion Module Relay Outputs Are User
Configurable As Listed Above.

Connect FRP Tubing To High Pressure
Port  (Bottom Tube) and Route To Static
Pressure Pickup Probe Located In Unit
Discharge. Leave Port Marked “Lo” Open
To Atmosphere

OE271

Static Pressure

Transducer

Splice If Required

Connect To
Expansion Module(s)
(When Used)

Connect To Digital Room Sensor And/Or
Digital CO Sensor

2

Warning:
24 VAC Must Be Connected So That All Ground
Wires Remain Common. Failure To Do So Will
Result In Damage To The Controllers.

T to T, R to R & SHLD to SHLD

Size Transformer For Correct
Total Load.
VCM-X Controller = 8 VA

OE332-23E-VCMX-MOD-

VCM-X Modular

E-BUS Controller

Note:
All Relay Outputs Are Normally Open And
Rated For 24 VAC Power Only.
1 Amp Maximum Load.

AI1 SET

AI2 SET

AI3 SET

AI4 SET

AI5 SET

AI7 SET

Jumpers

RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC

RS-485 COMMUNICATION LOOP. WIRE
“R” TO “R”, “T” TO “T” “SHLD” TO “SHLD”

FAN

RELAY 2

RELAY 3

RELAY 4

RELAY 5

RELAY
COMMON

IC DIGITAL

SENSOR

2

IC

EXPANSION

2

STATIC

PRESSURE

ANALOG INPUT JUMPER SETTINGS
MUST BE SET AS SHOWN FOR
PROPER OPERATION

24 VAC POWER ONLY

WARNING!

POLARITY MUST BE OBSERVED

OR THE CONTROLLER WILL BE DAMAGED

AI1

AI2

AI3

AI4

THERM

THERM

THERM

THERM

THERM

THERM

4-20mA

4-20mA

4-20mA

4-20mA

4-20mA

4-20mA

0-10V

0-10V

0-10V

0-10V

0-10V

0-10V

0-5V

0-5V

0-5V

0-5V

0-5V

0-5V

AI5

AI7

ANALOG INPUT

JUMPER

SETTINGS

WattMaster Label

#LB102073-01-A

Rev.: 1A

VCM-X MODULAR E-BUS CONTROLLER

Orion No.:OE332-23E-VCMX-MOD-A

AAON No.:

V07150

AI1

= SPC (SPACE TEMPERATURE SENSOR)

AI2

AI3

AI4

AI5

AI7

A01

A02

= SAT (SUPPLY AIR TEMPERATURE SENSOR)
= RAT (RETURN AIR TEMPERATURE SENSOR)
= OAT (OUTDOOR AIR TEMPERATURE SENSOR)
= SUCTION PRESSURE SENSOR (FROM EXP. MODULE)
= SPACE TEMPERATURE SENSOR SLIDE ADJUST

OR VOLTAGE RESET SOURCE

= ECONOMIZER (2-10 VDC  OUTPUT)
= SUPPLY FAN VFD (0-10 VDC  OUTPUT)

LED BLINK CODES

LED NAME

STATUS1

STATUS2

NORMAL OPERATION

0

1

SAT FAIL

1

2

OAT FAIL

2

2

SPC FAIL

3

2

MODULE ALARM

4

2

MECH COOL FAIL

1

3

MECH HEAT FAIL

2

3

FAN PROOF FAIL

3

3

DIRTY FILTER

4

3

EMERGENCY SHUTDOWN

5

3

LOW SAT

1

4

HIGH SAT

2

4

CONT. TEMP COOL FAIL

3

4

CONT. TEMP HEAT FAIL

4

4

PUSH BUTTON OVR

1

5

ZONE OVR

2

5

OUTPUT FORCE ACTIVE

0

6

E-BUS

CONNECTOR

HSSC Cable

Connect To VCM-X E-BUS

Controller or SA E-BUS Controller

HSSC Cable Connect To

VCM-X E-BUS Port

Set ADDRESS Dip Switch 1 to ON for

Water Cooled or to OFF for Air Cooled.

Currently showing OFF for Air Cooled.

Set ADDRESS Dip Switch 2 to OFF

on all communicating applications

unless it is intended to be the Second

Head Pressure Module on a system. If

set to ON, it will not communicate.

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.

.

Currently showing OFF.

ADDRESS

BIN 1

BIN 2

BIN 3

COM

+24 Volts

Condenser Fan A

ECM Motor

Duty Cycle

Condenser Fan B

ECM Motor

COM

+

Condenser

Signal B

COM

+

Condenser

Signal A

CONDENSER A ENABLE

R1

HVAC UNIT CONNECTION

R3

CONDENSER B ENABLE

COMM

REVERSING VALVE B ENABLE

REVERSING VALVE A ENABLE

R4

R2

YELLOW

BLUE   +24 OUT

+24 Volts

Duty Cycle

YELLOW

BLUE   +24 OUT

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

+2

4V

AC

GN

D

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

YC

ON

TA

CT

RA

TING

IS

1A

MP

MA

X@

24

VA

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

Содержание HP2C2

Страница 1: ...Two Condenser Head Pressure II Module Technical Guide ...

Страница 2: ... N V22100 Rev F Copyright September 1 2022 AAON Inc AAON is a registered trademark of AAON Inc Tulsa OK AAON assumes no responsibility for errors or omissions in this document This document is subject to change without notice HP2C2 REVISION LOG REVISION AND DATE CHANGE Rev E April 1 2015 previous version Rev F September 1 2022 added note the HSSC cable is no longer supplied with this module update...

Страница 3: ...II Module Wiring 7 E BUS Controller to Two Condenser Head Pressure II Module Wiring 8 Stand Alone Input Commands 9 SEQUENCE OF OPERATION 9 VCM X Input Commands and Modes of Operation 10 OPTIONS Dip Switch Settings 11 OPTIONS Dip Switch Settings 12 Head Pressure Module Valve Fan Position Troubleshooting 13 TROUBLESHOOTING 13 Troubleshooting for Stand Alone Mode 14 Pressure Transducer Troubleshootin...

Страница 4: ...d alone or up to two modules can be daisy chained together and connected to a VCM X Modular E BUS VCM X WSHPE BUS or SAE 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...

Страница 5: ...cer 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 04 5 64 5 71 2 07 0 55 4 14 0 29 0 18 DIA TYP ALAR...

Страница 6: ...M Condenser Signal A CONDENSER A ENABLE R1 HVAC UNIT CONNECTION R3 CONDENSER B ENABLE NOTE NORMALLY OPEN AND RATED FOR 24 VAC POWER ONLY ALL RELAY OUTPUTS ARE 1 AMP MAXIMUM LOAD COMM 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 al...

Страница 7: ...RESS Dip Switch 2 to OFF on all communicating applications unless it is intended to be the Second Head Pressure Module on a system If set to ON it will not communicate 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 ...

Страница 8: ...al CO Sensor 2 Warning 24 VAC Must Be Connected So That All Ground Wires Remain Common Failure To Do So Will Result In Damage To The Controllers T to T R to R SHLD to SHLD Size Transformer For Correct Total Load VCM X Controller 8 VA OE332 23E VCMX MOD VCM X Modular E BUS Controller Note All Relay Outputs Are Normally Open And Rated For 24 VAC Power Only 1 Amp Maximum Load AI1 SET AI2 SET AI3 SET ...

Страница 9: ...ng Dip Switch values NOTE The only setpoint available for adjustment by the contractor is the Head Pressure Setpoint The rest of the setpoints described can only be changed by the factory ADDRESS Dip Switch Settings for Condenser Type Selection When using the OPTIONS Dip Switch to set the Head Pressure Setpoint you must also set the ADDRESS Dip Switch to designate the type of condenser you are usi...

Страница 10: ...for the Reversing Valve to be energized in the Cooling Mode and to Fail to the Heat Mode Dipswitch 4 is set ON then the Head Pressure Controller will be in the Cooling Mode when one or both of the Condenser Signal inputs is ON and the Reversing Valve Enable Signal is ON In this circumstance the Reversing Valve Enable Relay Output s will energize for indication purposes If the Head Pressure Control...

Страница 11: ...5 DEFAULT 1 260 210 2 270 220 3 280 230 4 290 240 5 300 250 6 310 260 7 320 270 8 330 280 9 340 290 10 350 300 11 360 310 12 370 320 13 380 330 14 390 340 15 400 350 ADDRESS Dip Switch 1 Settings Switch 1 Default SP Description of Default Head Pressure Setpoint OFF 340 Air Cooled Condenser using R410 A Refrigerant ON 235 Water Cooled Condenser using R410 A Refrigerant Switch 1 determines Air or Wa...

Страница 12: ...ngs ADDRESS Dip Switch 4 Settings Switch 4 Description OFF Reversing Valve On to Heat Off to Cool ON Reversing Valve On to Cool Off to Heat Table 6 ADDRESS Dip Switch 4 Settings for Reversing Valve ADDRESS Dip Switch 2 Settings Switch 2 Description OFF Set to OFF if Using only 1 Head Pressure Module or if this is Module 1 when Using 2 Head Pressure Modules ON Set to ON if this is Module 2 when Usi...

Страница 13: ...ximum fan speed is 10 volts 100 Anything less than 1 5 volts the fan will be off PWM signal is 0 to 100 PWM to ground will always read 24 vdc PWM to ground can be measured for volts dc and this formula will tell you the percentage signal 24 measured value 24 measured value PWM to ground PWM 0 volts 100 fan speed 6 volts 75 fan speed 12 volts 50 fan speed 18 volts 25 fan speed 20 4 volts 15 fan spe...

Страница 14: ...Max Voltage of 10VDC See Sequence Higher Monitor DC Volts on A ut 1 2 Voltage O should Modulate Down to a Min voltage of 0VDC See Sequence Lower There will be No Change on A ut 1 O 2 Same 1 Blink None of the Sensors are Check wiring on all sensors Measure DC Volts between SIGx GND for all sensors Compare readings to chart Yes 2 Blinks High Pressure on one of the Sensors More than 500 PSI 3 Blinks ...

Страница 15: ...mmunication one for alarms and four for compressor relays See Figure 6 for the LED locations The LEDs associated with these inputs and outputs allow you to see what is active without using a voltmeter Status LEDs COMM This LED will light up to indicate Communications with theVCM X series or SAseries controller If Communications are established the COMM LED will blink You should not see this LED li...

Страница 16: ...these checks the PWR LED does not light up the module is probably defective COMM LED When the Two Condenser Head Pressure II Module is powered up while in Stand Alone Mode the COMM LED does not light up When the module is connected to a VCM X series or SA series controller the COMM LED should light up indicating Communications Each time Communications are detected this LED should continuously blin...

Страница 17: ...Controls Support 866 918 1100 Monday through Friday 7 00 AM to 5 00 PM Central Standard Time Controls Support website www aaon com aaon controls technical support AAON Factory Technical Support 918 382 6450 techsupport aaon com NOTE Before calling Technical Support please have the model and serial number of the unit available PARTS For replacement parts please contact your local AAON Representativ...

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