Orion VCB-X, OE335-26B-VCBX-A, OE335-26B-VCBX-C Technical Manual

VCB-X Controller

Field Technical Guide

VCB-X Controller Code: SS1051 Version 2.0 and up

Requires Modular Service Tool SD Code: SS1063 Version 1.0 and up

Requires System Manager TS II Code: SS7002 Version 2.0 and up

TABLE OF CONTENTS

OVERVIEW ....................................................................................................................................... 5

Features and Applications ........................................................................................................................................ 5

Part Number Cross Reference .................................................................................................................................7

Parts List .................................................................................................................................................................. 8

VCB-X Controller Dimensions ................................................................................................................................ 14

EM1 Expansion Module Dimensions ..................................................................................................................... 15

EM2 Expansion Module Dimensions ..................................................................................................................... 16

12 Relay Expansion Module Dimensions .............................................................................................................. 17

VCB-X Controller Components .............................................................................................................................. 18

INSTALLATION & WIRING ............................................................................................................. 19

VCB-X Input and Output Wiring ............................................................................................................................. 20

E-BUS Digital Room Sensor ............................................................................................................................. 22

E-BUS CO

Duct Mounted E-BUS CO2 Sensor ................................................................................................................... 24

Space Temperature Sensor & Slide Adjust ....................................................................................................... 25

Supply Air Temperature Sensor ........................................................................................................................ 26

Outdoor Air Temperature Sensor ...................................................................................................................... 27

E-BUS Outdoor Air Temperature and Humidity Sensor .................................................................................... 28

E-BUS Return Air Temperature and Humidity Sensor ...................................................................................... 29

Suction Pressure Transducer Kit ...................................................................................................................... 30

Digital Compressor Discharge Temperature Sensor......................................................................................... 31

Digital Compressor Unloader ............................................................................................................................ 32

Supply Fan VFD Signal ................................................................................................................................... 33

Economizer Damper Actuator ........................................................................................................................... 34

Modulating Heating Device ............................................................................................................................... 35

EM1 Expansion Module Input and Output Wiring .................................................................................................. 36

Static Pressure Transducer ............................................................................................................................. 38

Return Air Temperature Sensor ....................................................................................................................... 39

Leaving Water Temperature Sensor ................................................................................................................. 40

Building Static Pressure Sensor ....................................................................................................................... 42

Head Pressure Transducer ............................................................................................................................... 43

Building Pressure Control Output ..................................................................................................................... 44

Chilled Water Valve Actuator ............................................................................................................................ 45

Condenser Fan ECM Motor and VFD or Water Valve Actuator Wiring ............................................................. 46

Wall Mounted Sensor .................................................................................................................... 23

2

WattMaster Controls Inc.
8500 NW River Park Drive · Parkville , MO 64152
Toll Free Phone: [phone]
PH: [phone] · FAX: [phone] ·
E-mail: [e-mail]

Visit our web site at www.orioncontrols.com

WattMaster Form: OR-VCBX-FIELD-TGD-01Q
Copyright August 2014 WattMaster Controls, Inc.

®

is a registered trademark of AAON, Inc., Tulsa, OK.

AAON

Copeland Digital Scroll™ is a registered trademark of
Copeland Corporation, Sidney, OH

2

www.orioncontrols.com

®

BACnet
EBTRON® is a registered trademark of Ebtron, Inc., Loris, SC.
GreenTrol
Inc. Loris, SC.
Paragon MicroTransEQ Series Air Flow Monitoring Station is a
registered trademark of Paragon Controls, Inc., Santa Rosa, CA.
Neither WattMaster Controls, Inc. nor AAON® assumes any
responsibility for errors or omissions in this document.
This document is subject to change without notice.

is a registered trademark of ASHRAE Inc., Atlanta, GA.

TM

is a registered trademark of GreenTrol Automation,

VCB-X Controller Field Technical Guide

TABLE OF CONTENTS

EM2 Expansion Module Input and Output Wiring .................................................................................................. 47

Remote SAT Reset Signal ............................................................................................................................... 48

Remote Forced Cooling, Heating & Dehumidifi cation ..................................................................................... 48

Return Air Bypass ............................................................................................................................................. 49

E-BUS 12 Relay Expansion Module Wiring ........................................................................................................... 50

EBTRON

MHGRV-X Controller .............................................................................................................................................. 52

MODGAS-X Controller ........................................................................................................................................... 53

START-UP & COMMISSIONING ..................................................................................................... 54

Addressing, Baud Rate & Powering Up ................................................................................................................. 54

Programming the Controller ................................................................................................................................... 55

INPUTS & OUTPUTS ..................................................................................................................... 56

SEQUENCE OF OPERATIONS ........................................................................................................ 61

Supply Fan Operation Mode .................................................................................................................................. 61

Occupied / Unoccupied Mode ................................................................................................................................ 61

HVAC Modes of Operation ..................................................................................................................................... 62

Remote Contact Control ........................................................................................................................................ 66

Space Sensor Operation ........................................................................................................................................66

IAQ (CO2) Control Operation ................................................................................................................................. 66

Morning Warm-Up / Cool-Down ............................................................................................................................. 66

Single Zone VAV .................................................................................................................................................... 67

Supply Air Temperature Setpoint Reset ................................................................................................................. 67

Airfl ow Monitoring .................................................................................................................................................. 68

Pre-Heater ............................................................................................................................................................. 68

Low Ambient Operation .......................................................................................................................................... 68

Heat Wheel Operation ........................................................................................................................................... 68

Duct Static Pressure Control ..................................................................................................................................68

Duct Static Pressure Control For Filter Loading .................................................................................................... 69

Building Pressure Control ...................................................................................................................................... 69

MUA Operation ...................................................................................................................................................... 69

CAV/MUA Dual Mode (Hood On/Off Operation) .................................................................................................... 70

Space Temperature Control of High Percentage Outside Air Units ....................................................................... 70

Air to Air Heat Pump Operation .............................................................................................................................. 71

Heat Pump Standard Defrost Operation ................................................................................................................ 71

Heat Pump Adaptive Defrost Operation .................................................................................................................71

Water Source Heat Pump Operation ..................................................................................................................... 72

Water Source Heat Pump Safety Monitoring ......................................................................................................... 73

Head Pressure Control .......................................................................................................................................... 74

Temperature Protection .......................................................................................................................................... 74

Outdoor Air Lockouts .............................................................................................................................................74

System Broadcasts ................................................................................................................................................ 74

®

, GreenTrol™, and Paragon Air Flow Measurement Digital Transmitter ...............................................51

Cooling ............................................................................................................................................................ 62

Economizer Operation ...................................................................................................................................... 63

Dehumidifi cation ............................................................................................................................................... 63

Heating ............................................................................................................................................................ 65

Ventilation ........................................................................................................................................................ 65

Off Mode ........................................................................................................................................................... 65

VCB-X Controller Field Technical Guide

3

TABLE OF CONTENTS

Alarm Detection and Reporting .............................................................................................................................. 74

Sensor Failure Alarms ............................................................................................................................................ 75

Mechanical Failure Alarms ..................................................................................................................................... 75

Failure Mode Alarms .............................................................................................................................................. 76

Title 24 Economizer Alarms ................................................................................................................................... 76

VAV/Zone Controller Alarms ................................................................................................................................... 77

Relay Outputs ........................................................................................................................................................ 77

Trend Logging ........................................................................................................................................................ 77

TROUBLESHOOTING ..................................................................................................................... 78

LED Diagnostics .................................................................................................................................................... 78

VCB-X Controller & VCB-X EM1 Expansion Module LED Locations ..................................................................... 79

LED Operation ....................................................................................................................................................... 80

APPENDIX A .................................................................................................................................. 81

System Confi gurations ........................................................................................................................................... 81

Space, Outdoor Air, or Return Air Temperature Sensor Testing ............................................................................. 85

Copeland

OE271 & OE258-01 Pressure Sensor Testing ....................................................................................................... 87

OE275-01 Suction Pressure Transducer Testing ................................................................................................... 88

Head Pressure Transducer Troubleshooting ......................................................................................................... 89

®

Discharge Thermistor Temperature Sensor Testing ............................................................................ 86

APPENDIX B - LCD Display Screens (Controller Interface & BACnet® Confi guration) ................ 90

APPENDIX C - VCB-X BACnet® Connection to MS/TP Network, BACnet Parameters

& PICS Statement ...................................................................................................................95

INDEX .......................................................................................................................................... 106

4

VCB-X Controller Field Technical Guide

OVERVIEW

System Features

Features

The VCB-X Controller (OE335-26B-VCBX-A) is designed with 5
analog inputs, 3 analog outputs, 1 triac output, 4 binary inputs, and 6
relay outputs. It also has an on-board BACnet® port for connection to
an MS/TP network. The Controller contains a 2 x 8 LCD character
display and 4 buttons that allow for status and alarm display and
force modes as well as BACnet confi guration.

The VCB-X EM1 Expansion Module ( OE336-23-EM1-A) provides
an additional 6 analog inputs, 4 analog outputs, 3 binary inputs,
and 5 confi gurable relay outputs. The VCB-X EM2 Expansion
Module (OE336-23-EM2-A) provides an additional 1 analog
input, 2 analog outputs, and 3 binary inputs. The VCB-X 12
Relay Expansion Module (OE358-23E-12R-A) provides up to 12
additional confi gurable relay outputs.

There are also 2 E-BUS Expansion Ports which allow for
the connection of the three expansion modules listed above,
communicating sensors, an EBTRON® or GreenTrol
Monitoring system, and future E-BUS Modules via modular cable
assemblies. There are presently 5 communicating sensors available.
Two of these sensors have LCD displays: E-BUS Digital Space
Temperature Only Sensor or E-BUS Digital Space Temperature
and Humidity Sensor. There is a communicating E-BUS Space
Temperature and Humidity Sensor with no LCD display as well as
an E-BUS Space CO2 Sensor, and E-BUS Duct CO2 Sensor with
no LCD display.

TM

Airfl ow

• Auxiliary and Emergency Heat Options for Heat

Pumps

• Air Flow Monitoring of Outdoor Air, Supply Air,

Return Air, and Exhaust Air Streams

• Air Flow Control of Outdoor Air Damper

• Single Zone VAV Control w/Optional CAV Heating

• Primary/Secondary Heating Control

• Remote Forced Cooling, Heating, and

Dehumidifi cation Control

• Remote SAT Reset Signal

• Return Air Bypass Control

• Adaptive Supply Air Reset

• Selectable Mode Enable Sensor

• Fan Proving Interlock

• Dirty Filter Alarm

• Emergency Shutdown Input (Smoke Detector/

Firestat or other Shutdown Conditions)

• Drybulb/Wetbulb/Dewpoint Control of Economizer

Operation

• Building Pressure Control (Direct or Reverse

Acting)

The VCB-X Controller provides for Constant Volume, VAV, Single
Zone VAV, MUA, and Air to Air Heat Pump applications.

Most common HVAC unit control applications can be confi gured
using only the VCB-X Controller. If the application requires more
inputs and/or outputs, the optional expansion modules are available
to provide for additional analog, binary, or digital inputs and outputs
as required.

Other features of the VCB-X include:

• Up to 5 Total Stages of Heating and Cooling

• Direct Digital Control of Copeland Digital
Scroll™ Compressor

• Modulating Cooling Output for Chilled Water
Valve Control

• Modulating Heating Output ( Hot Water Valve,

Steam Valve, SCR Electric Heat Control)

• Full Integration with the AAON

Modulating Natural Gas Controller

• Full Integration with the AAON

Modulating Hot Gas Reheat Controller

®

MODGAS-X

®

MHGRV-X

• Confi gurable for Heat Pump Applications

• Heat Pump Defrost Operation

• Remote Forced Occupied Capability

• Confi gurable for AAON

®

PAC and DPAC Applications

• IAQ Economizer Reset

• Title 24 Economizer Certifi ed

• 7-Day, 2-Event-per-Day Scheduling

• 14 Holiday Event Scheduling

• Daylight Savings Time Adjustment

• Trend Logging Capability

• Static Pressure Control for Filter Loading

Applications

• Heat Wheel - On/Off Control

• Head Pressure Control

• Water Source Heat Pump Monitoring

• On-board BACnet

MS/TP network (See Appendices B & C)

®

port for connection to an

• Advanced Dehumidifi cation Capabilities

VCB-X Controller Field Technical Guide

5

OVERVIEW

Applications

Applications

Variable Air Volume Unit

The VCB-X can be confi gured to control a VFD Supply Fan for Duct
Static Pressure control. If the unit is not equipped with a VFD, but
Duct Static Pressure control is needed, a modulating Zoning Bypass
Damper can be controlled by the VCB-X.

VAV units are typically designed for occupied Cooling with Morning
Warm-up Heating. This option is available with the VCB-X. The
VCB-X can also be used for a Zoning System that needs Duct Static
Pressure control and Occupied Cooling and Heating.

The VCB-X also has the ability to be confi gured for Duct Static
Pressure Control by controlling the Supply Fan VFD for the purpose
of maintaining proper Duct Static Pressure in response to varying
fi lter loading conditions.

When an indoor humidity sensor is connected to the system, the
VCB-X allows Dehumidifi cation Priority on a VAV unit. This could
be useful on a building with a very low internal sensible load, but
which has a high internal and/or external latent load. During VAV
Dehumidification, the VCB-X activates Cooling based on the
Evaporator Coil Temperature and activates AAON
Hot Gas Reheat to warm the Supply Air Temperature to the Active
Supply Air Temperature Setpoint.

Constant Air Volume Unit

The VCB-X can be confi gured to activate a Constant Volume Supply
Fan. In most cases, this is a very basic unit with Space Temperature or
Return Air Temperature control. The VCB-X can be used for kitchen,
restaurant, or lab environments that are 100% Outdoor Air part of
the time and Return Air part of the time. The Hood On input allows
the VCB-X to know when to switch to 100% Outdoor Air control
based on an exhaust hood activating. The VCB-X requires Outdoor
and Indoor Air Temperature Sensors to accomplish this application.

Single Zone VAV

This is a hybrid CAV/VAV application for a unit serving a single
space and using Space Temperature Setpoints to enable Heating
and Cooling Modes. Heating and Cooling are controlled to their
respective Supply Air Setpoints while the supply fan modulates
to maintain the Space Temperature Setpoints. Single Zone VAV
applications can be confi gured for VAV Cooling and either VAV or
CAV Heating. VAV operation requires the use of modulating Heating
or Cooling sources.

®

Modulating

AAON® PAC (Precision Air Control)

This control scheme can only be used on Constant Volume HVAC
units that are equipped with a Return Air Bypass Damper and that
use a Space Temperature Sensor as the Controlling Sensor.

AAON® PAC Control provides improved moisture removal
capabilities while utilizing internal space loads for reheat by
redirecting the Return Air path from the upstream side of the DX
Evaporator Coil to the downstream side of the coil.

For AAON® PAC confi gured units, the Return Air Bypass Damper
is only used during the Dehumidifi cation Mode. When the VCB-X
Controller is in Dehumidifi cation Mode, the Return Air Bypass
Damper will modulate open as the Space Temperature falls below
the Cooling Setpoint. Modulation of the Return Air Bypass Damper
is controlled using a proportional range from 0% (when the Space
Temperature is equal to the Cooling Setpoint) up to 100% (when the
Space Temperature falls to the halfway point between the Cooling
and Heating Setpoints). A separate Return Air Damper Actuator
will modulate the Return Air Damper slightly further towards its
closed position as the Return Air Bypass Damper opens. This is to
ensure that enough Return Air is bypassed around the Evaporator
Coil through the Return Air Bypass Damper to raise its temperature.
The rate which the Return Air Damper closes while the Return Air
Bypass Damper is open is user-adjustable.

AAON® DPAC (Digital Precision Air Control)

This control scheme can only be used on Constant Volume HVAC
units that are equipped with a Return Air Bypass Damper and a
Copeland Digital Scroll™ Compressor. AAON® DPAC also uses a
Space Temperature Sensor as the Controlling Sensor.

The AAON® DPAC control scheme provides improved moisture
removal capabilities over the AAON® PAC control scheme and
provides for tighter temperature control by combining a Copeland
Digital Scroll™ Compressor with the Return Air Bypass Damper.
Refer to AAON® PAC Control previously described for detailed
Return Air Bypass Damper operation.

The Copeland Digital Scroll™ Compressor is used during both
Cooling and Dehumidifi cation Modes. The Return Air Bypass
Damper is used only during the Dehumidifi cation Mode.

Make-Up Air Unit

The VCB-X can be confi gured for 100% Outdoor Air control for
Make-Up Air. All HVAC Modes are determined from the Outdoor
Air Sensors. The Outdoor Air Volume must always be at least 50%
or higher to be confi gured for Outdoor Air control.

6

Revised 8/14/13

VCB-X Controller Field Technical Guide

OVERVIEW

Part Number Cross Reference

PART DESCRIPTION

VCB-X Controller

VCB-X 12 Relay Expansion Module OE358-23E-12R-A

VCB-X EM1 Expansion Module

VCB-X EM2 Expansion Module OE336-23-EM2-A

Building Static Pressure Sensor OE258-01

CommLink 5 Communications Interface OE361-13

Duct Static Pressure Sensor OE271

EBC E-BUS Cable Assembly E-BUS Power & Comm
1 Ft, 1.5 Ft, 3 Ft, 10 Ft, 25 Ft, 37 FT, 50 Ft, 75 Ft,
100 Ft, 150 Ft, 250 Ft, and 1000 Foot Spool

E-BUS Adapter Hub MS000248

E-BUS Adapter Hub with 1.5 Ft. EBC Cable HZ-EBC-248

E-BUS

Adapter Board

E-BUS CO

E-BUS CO

E-BUS Digital Room Sensor - LCD Display - Temp. Only OE217-02-A

E-BUS Digital Room Sensor - LCD Display - Temp & RH OE217-03-A

E-BUS Digital Room Sensor - No LCD Display - Temp & RH OE217-04-A

E-BUS Horizontal Outside Air Temperature & RH Sensor OE265-15-A / OE265-15-C

E-BUS Vertical Outside Air Temperature & RH Sensor OE265-16-A

E-BUS Return Air Temperature & RH Sensor OE265-17-A

GPC-X Controller OE332-23-GPCX

GPC-XP Controller OE338-23-GPCXP

Immersion Well for OE230 Water Temperature Sensor OE291

IP Module Kit OE415-02

MHGRV-X Controller OE377-26-00059

MiniLink Polling Device OE364-22

MODGAS-X Controller OE377-26-00058

Modular Service Tool SD - Operator Interface OE391-12

Modular System Manager SD - Operator Interface OE392-12

Outdoor Air Temperature Sensor OE250

Return Air Temperature Sensor OE231

Standard Room Sensor - Plain OE210

Standard Room Sensor - W/ Override OE211

Standard Room Sensor - W/ Override & Slide Adjust OE213

Standard Room Sensor - W/ Slide Adjust OE212

Static Pressure Pickup Tube OE290

Strap-On Temperature Sensor Kit OE233

Suction Pressure Sensor Kit with E-BUS Adapter OE275-03-A

Supply Air Temperature Sensor OE231

System Manager TS II - Operator Interface OE392-10

USB-Link 2 Kit OE366

Water/Air Temperature Sensor OE230

Sensor with Remote Pickup - Duct Mounted OE256-07-A

2

Sensor - Space OE256-05-A

2

OE335-26B-VCBX-A
OE335-26B-VCBX-C

OE336-23-EM1-A
OE336-23-EM1-C

EBC-1-F-A, EBC-1.5-F-A, EBC-3-F-A, EBC-10-F-A, EBC­25-F-A, EBC-37-F-A, EBC-50-F-A, EBC-75-F-A, EBC­100-F-A, EBC-150-F-A, EBC-250-F-A, EBC-SPOOL-A

OE365-15-EBA-A

ORION

PART NUMBER

VCB-X Controller Field Technical Guide

Revised 9/23/13

7

OVERVIEW

Parts and Descriptions

PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.

OE335-26B­VCBX-A

OE336­23-EM1-A

OE336­23-EM2-A

VCB-X Controller

The VCB-X Controller provides 5 analog inputs, 3 analog outputs, 1 triac
input, 4 binary inputs, and 6 user-confi gurable relays. It also has an on-
board BACnet port for connection to an MS/TP network. The Controller
contains a 2 x 8 LCD character display and 4 buttons that allow for status
and alarm display as well as BACnet confi guration. It presently allows for
the addition of the EM1 Expansion Module and the 12 Relay Expansion
Module described below.

NOTE:

Set-up, confi guration, and monitoring of the VCB-X Controller re-

quires one of the following communication interfaces—Prism 2 Front-End
Software used with a personal computer, System Manager Touch Screen,
or Modular Service Tool SD.

VCB-X EM1 Expansion Module

The EM1 Expansion Module adds VAV applications, building pressure
control, head pressure control, water source heat pump monitoring, and
other functions. It provides 6 additional analog inputs, 3 binary inputs, 5
additional relays, and 4 analog outputs. It connects with an EBC E-BUS
cable to the VCB-X Controller.

VCB-X EM2 Expansion Module

The EM2 Expansion Module adds remote forced heating, cooling, and
dehumidifi cation using 3 additional binary inputs. It provides 2 analog
outputs for controlling a Return Air Bypass Damper and a Return Damper
in Return Air Bypass applications. It also has an analog input that can
be used as a remote voltage input to reset the Supply Air Setpoint or as
a Title 24 Economizer feedback signal. It connects with an EBC E-BUS
cable to the VCB-X Controller.

LOOPCOMM

485 DRV

T-

SH

LT1785

U

ALARM

.1uF

R+

TB1

BINARY
INPUTS

P5

BIN1

D6

BIN2

D7

BIN3

D8

BIN4

R38

D9

30

RS-485 COMM

COM

R41

LOOP. WIRE

30

“R”TO“R”,

R43

COM

30

“T”TO“T”

R47

GND

R63

+3.3V

+5V

3650

485 DRV

T-

SH

R+

U2

.1uF

AI1

AI2

AI3

AI4

AI5

GND

GND

3650

3650

3650

30

R1

J1

R68

4751

LT1785

C81

+12V

GND

R17

R20

R22

“SHLD”TO“SHLD”

Orion No.: OE335-26B-VCBX

ANALOG INPUTS

AI1= SPC (SPACETEMP SENSOR)
AI2
AI3
AI4
AI5

BINARYINPUTS

BI1
BI2
BI3
BI4

ANALO

AO1
AO2
AO3

TRIAC OUTPUT

TR1

UNLOADER
(24 VAC & UNLOAD
TERMINALS)

WattMaster Label

24 VAC POWER

POLARITYMUST
BE OBSERVED

CONTROLLER

www.aaon.com

VCB-X CONTROLLER

= SAT(SUPPLYAIR TEMP SENSOR)
= OAT(OUTDOORAIR TEMP SENSOR)
= DCT(DIGITALCOMP DISCH TEMP SENSOR)
= SPACETEMPERATURE SLIDE OFFSET

= EMERGENCYSHUTDOWN
= PROOF OF FLOW
= DIRTYFILTER
= COILTEMPSWITCH

G OUTPUTS

= FAN VFD
= ECONOMIZER
= MOD HEATING

= DIGITALCOMP

#SW000061
Rev.: 1A

ONLY

WARNING!

OR THE

WILLBE
DAMAGED

GND

EXPANSION

+24VAC

TB3

CUTTO ISOLATE
COM FROM GND

BACNET

TB7

ANALOG
INPUTS

TB4

APPHB

OS HB

WDOG

SERIAL#

SERIAL#

E-BUS

CANCEL

X

UP

DOWN

www.orioncontrols.com

AAON : V28940

AAON Coil: J00142

RELAYCONTACT
RATING IS 1AMP
MAX @ 24 VAC

RELAY2

RELAY3

RELAY4

RELAY5

RELAY6

RELAY
COMMON

EXPANSION

YS102442 REV 1

WATTMASTER CONTROLS

MADE IN USA

RLY1

RLY2

RLY3

RLY4

ENTER

RLY5

RLY6

COMMON

TB2

RELAY
OUTPUTS

ALERT

3650

R82

24VAC

P2

DIGITAL

COMP

P3

UNLOAD

FAN

C30

ANALOG

1002

R51

OUTPUTS

2201

R59

U17

AOUT1

AOUT2

.1uF

AOUT3

C36

2201

R73
U19

GND

AOUT3AOUT1-2

GND

TB6

.1uF

STATUS 1

C46

STATUS 2

EBUS

POWER

3650

R21

3650

R109

R16

3650

R14

3650

.1uF

C21

ADDRESS

ADD

1002

1

1002

2

1002

4

1002

OFF

8

1002

16

1002

32

1002

BAUD

LOOP

E-BUS

1

1002

2

SW1

C14

.01uF

Page 20

Page 36

YS102484

ANALOG OUTPUT TB

ANALOG OUTPUT TB

GNDGND

www.orioncontrols.com

GND

WattMaster Label

#L102189

CONNECT

REV 1

SERIAL#

C28 C27

3650

R35

22pF

3650

R31

3650

R29

3650

R24

22pF

PWR

D9

ALARM

D10

STAT

D11

COMM

D13

TB2

AOUT1

1002

R32

1002

R33

AOUT2

C13

GND

ANALOG OUTPUTS

1002

R42

1002

R41

ADDRESS

S1

1002

OFF

R2

1

R3

1002

2

B

Rev.: 1A

E-BUS

C26

.01uF

Page 47

TB1

AIN

.1uF

C4

www.aaon.com

GND

D4

OE336-23-EM2

1002

R12

VCB-X EM2 EXPANSION MODULE

ANALOG

1002

R1

INPUT

1002

AAON: V35130

J2

R58

ANALOG INPUT TB

REMOTE SATRESETSIGNAL
GND

4751

TB7

D12

3001

BINARYINPUT TB

D27

BIN1

REMOTE FORCED COOLING

4751

D15

REMOTE FORCED HEATING

3001

D28

BIN2

REMOTE FORCED DEHUMID.

D18

4751

D29

BIN3

3001

RETURNAIR BYPASS DAMPER

BINARYINPUTS

RETURNAIR DAMPER

C23

L20

24 VAC POWER ONLY

C22

WARNING!POLARITYMUST BE

D22

OBSERVED OR THE CONTROLLER

D201

WILLBE DAMAGED

POWER INPUT TERMINALBLOCK

R52

+24VAC

V6

+24VAC

E-BUS

CONNECT

GND

TB8

OE358-23E­12R-A

VCB-X E-BUS 12 Relay Expansion Module

The VCB-X 12 Relay Expansion Module adds 12 confi gurable relays to
the VCB-X Control System. It connects to the VCB-X Controller with an
EBC E-BUS cable.

OE210
OE211
OE212
OE213

Standard Room Sensor–Plain, w/Override, w/Override &
Slide Adjust & w/Slide Adjust Only

Includes: Standard Room Sensor - Plain, with Override, with Override and
Slide Adjust & with Slide Adjust only. For wall mounting. Use with VCB-X
Controller only. Connects to controller via fi eld fabricated wiring.

OE217-02 E-BUS Digital Room Sensor - Temp. Only

LCD Display and keypad allow for setpoint adjustment, override, and
display of certain status and setpoints. The OE217-02 is used with the
VCB-X Controller for room air temperature sensing applications. Uses
EBC E-BUS cable.

OE217-03 E-BUS Digital Room Sensor - Temp and Humidity

LCD Display and keypad allow for setpoint adjustment, override, and
display of certain status and setpoints. The OE217-03 is used with the
VCB-X Controller for room air temperature and humidity sensing applica­tions. Uses EBC E-BUS cable.

RLY-COM

RLY1

RLY2

RLY3

RLY4

RLY-COM

RLY5

RLY6

RLY7

RLY8

RELAY

EXPANSION BOARD

YS102324 REV 2

OVERRIDE ALARM

Display

OVERRIDE ALARM

Display

MADE IN USA

RLY-COM

RLY9

RLY10

RLY11

RLY12

Page 50

GND

24VAC

TMP

GND

AUX
OUT

Page 25

Override

Override

Page 22

Page 22

8

Revised 8/7/14

VCB-X Controller Field Technical Guide

OVERVIEW

Parts and Descriptions

PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.

OE217-04 E-BUS Digital Room Sensor - Temp and Humidity

The OE217-04 is used with the VCB-X Controller for room air temperature
and humidity sensing applications. Contains no LCD Display or keypad.
Uses EBC E-BUS cable.

OE256-05 E-BUS CO

Used with the VCB-X for CO2 sensing applications where wall mounting

Wall-Mounted Sensor

2

in the space is desired. Connects to the VCB-X Controller with an EBC
E-BUS cable of required length. Cable sold separately.

OE256-07 E-BUS CO

Used with the VCB-X Controller for duct mounted CO2 sensing applica-

Duct Sensor with Remote Pickup Tube

2

tions. Connects to the VCB-X Controller with an EBC E-BUS cable of
required length. Includes: Duct Mounted CO2 Sensor, Integral Aspiration
Box, Airfl ow Pickup Tube and 10 ft. EBC Cable.

OE265-15-A E-BUS Horizontal Outdoor Air Temperature & Humidity

Sensor

Used for outdoor temperature and humidity sensing applications. Con­nects to VCB-X Controller or E-BUS Adapter Hub using EBC E-BUS
cable. Includes: 10k Ohm E-BUS Horizontal Outside Air Temperature &
Humidity Sensor, mounted in a weatherproof handy box with attached 3
foot EBC E-BUS Cable with jack. A 10 foot EBC cable is included to
connect to the VCB-X Controller. If a longer EBC cable is required, it must
be ordered separately.

Page 22

Page 23

4321

3M

<PC>

1.6

1.2

37X04

4 3 2 1

3M

Page 24

Page 28

OE265-16-A E-BUS Vertical Outdoor Air Temperature & Humidity Sensor

Used for outdoor temperature and humidity sensing applications. Con­nects to VCB-X Controller or E-BUS Adapter Hub using EBC E-BUS
cable. Includes: 10k Ohm E-BUS Vertical Outside Air Temperature & Hu­midity Sensor, mounted in a weatherproof handy box with attached 3 foot
EBC E-BUS Cable with jack. A 10 foot EBC cable is included to
connect to the VCB-X Controller. If a longer EBC cable is required, it must
be ordered separately.

OE265-17-A E-BUS Return Air Temperature & Humidity Sensor

Used for return air temperature and humidity sensing applications. Con­nects to VCB-X Controller or E-BUS Adapter Hub using EBC E-BUS
cable. Includes: 10k Ohm E-BUS Return Air Temperature & Humidity Sen­sor, mounted in a weatherproof handy box attached 3 foot EBC E-BUS
Cable with jack. A 50 foot EBC cable is included to connect to the VCB-X
Controller. If a longer EBC cable is required, it must be ordered separately.

OE275-03-A

Suction Pressure Transducer Kit with E-BUS Adapter

Used for suction pressure sensing applications. Connects to VCB-X
Controller using E-BUS Adapter Board and EBC E-BUS cable. Includes:
OE275-01 Suction Pressure Transducer, modular cable with a modular
connector on one end and bare stripped wires on the other end, E-BUS
Adapter, and 3 Foot EBC E-BUS cable.

3M

4 3 2 1

37X04

1.2

1.6

<PC>

Page 29

Page 28

3M

4 3 2 1

37X04

1.2

1.6
<PC>

Page 30

VCB-X Controller Field Technical Guide

Revised 8/8/13

9

OVERVIEW

Parts and Descriptions

PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.

EBC-1-F
EBC-1.5-F
EBC-3-F
EBC-10-F
EBC-25-F
EBC-37-F
EBC-50-F
EBC-75-F
EBC-100-F
EBC-150-F
EBC-250-F
EBC-SPOOL

OE250 Outdoor Air Temperature Sensor

OE271

OE258-01

EBC E-BUS Cables

The EBC E-BUS Expansion Cables attach to the VCB-X Controller,
VCB-X Expansion Modules, and E-BUS Sensors. The EBC E-BUS cables
can be crimped and clamped to the E-BUS connector. Different lengths
can be joined together using an E-BUS extension adapter. The EBC
E-BUS Cables are available in 1, 1.5, 3, 10, 15, 25, 37, 50, 75, 100, 150,
250 & 1000 feet lengths. Includes: EBC E-BUS Cable Assembly.

Used for temperature sensing applications. Includes: 10k Ohm Outside Air
Temperature Sensor, 2 wire, mounted in a weatherproof handy box only.

Duct Static Pressure Sensor

Used for duct static pressure sensing applications. Includes: 0-5″ W.C.,
0-5 VDC, Static Pressure Sensor only.

Building Static Pressure Sensor

Used for Building Pressure Sensing. Includes: -0.25 to +0.25″ W.C., 0-5
VDC, 24 VAC/VDC supply power Building Pressure Sensor only.

N/A

Page 27

Page 38

Page 41

OE290

OE230
OE231

OE233 Strap-on Temperature Sensor Kit

OE291 Immersion Well for OE230 Water Temperature Sensor

OE392-10 System Manager TS II Operator Interface

Static Pressure Pick-up Tube

Used with OE271 Static Pressure Sensor for static pressure sensing ap­plications. Includes: Static Pressure Pick-up Tube with 1 ft. length of FRP
tubing, gasketed mounting bracket, and screws.

Duct Temperature Sensor - 6” Probe
Duct Temperature Sensor - 12" Probe

OE230 = 6″ probe length. OE231 = 12″ probe length. Used for return or
supply air temperature sensing applications. Includes: 10k Ohm Duct
Temperature Sensor, 2 wire only.

Includes: 10k Ohm, Type 3, Strap-on Temperature Sensor, 2 wire. Used
for water temperature sensing applications. Includes sensor, thermal
mastic, and plastic mounting strap.

Includes: Stainless steel thermowell to be used with the OE230 Tempera­ture Sensor listed above. The thermowell is designed to thread into a ½″
FPT elbow or tee in the water piping system.

The System Manager TS II provides a direct, graphic-enhanced, menu­driven link to enable the system operator to view the status and adjust the
setpoints of any controller on the VCB-X control system. The System Man­ager TS is equipped with a 4.3” 480 x 272 WQVGA RGB TFT LCD Touch
Screen Display. The System Manager TS is furnished with hardware for
fl ush mounting into hollow drywall or surface mounting on concrete brick
or plaster surfaces. Includes: System Manager TS with 12 ft. long pigtail
cable assembly.

Page 38

Pages
39 & 40

Pages
40 & 41

Page 40

See System
Manager
Touch
Screen II
Technical
Guide

10

VCB-X Controller Field Technical Guide

OVERVIEW

STATUS

Parts and Descriptions

PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.

OE391-12 Modular Service Tool SD

Includes: Modular Service Tool, power supply, communication cables,
4 Gigabyte SD card, and (4) AA batteries. Used to program and monitor
all Orion controllers.

OE392-12 Modular System Manager SD

Includes: Modular System Manager SD with 4 Gigabyte SD card and 12 ft.
long pigtail cable assembly. Used to program and monitor all Orion
controllers. Designed for hollow core wall mounting. When System
Manager is to be mounted on a solid wall (concrete), you will also need
to order the solid wall mounting bracket below. Modular System Manager
and communication cables.

EB101505 Solid Wall Mounting Bracket for Modular System Manager

SD

Includes: 22 gauge galvanized sheet metal mounting bracket with mount­ing holes and wire routing opening. Dimensions are 9.25″W x 8.00″H x

0.50″DP. The Wall Mounting Bracket provides wiring clearance between
the System Manager and the wall mounting surface when the System
Manager is to be mounted on a concrete or other solid wall surface. Not
for use with System Manager TS.

OE361-13 CommLink 5 Communications Interface

The CommLink 5 connects to your control system using a USB computer
connection to provide direct on-site communications with the control
system from a computer with the Prism 2 software installed. For remote
communications, see OE415-02 IP Module Kit.

Includes: CommLink 5, 6 ft. long USB cable, and 120/24 VAC power sup­ply. Required on all networked systems or if direct computer or remote
computer connection is required. Connects to your computer’s USB 1.1
or 2.1 port. Prism 2 computer front-end software must be installed on the
direct connected or remote connected computer in order to communicate
with your system.

Mode
Selecti on

13

2

654

708

9

-

See VCB-X
Controller
Operator
Interfaces
SD
Technical
Guide

See VCB-X
Controller
Operator
Interfaces
SD
Technical
Guide

See
CommLink
5 Technical
Guide

OE415-02

IP Module Kit - Internet/LAN Connection

Used for Internet or Local Area Network communications with the control
system. Field installs by plugging into the CommLink 5 circuit board and
provides an addressable Ethernet connection to the controls system from
any computer connected to your building’s LAN. It can also be confi gured
to allow access to the control system from the Internet through your LAN if
your Ethernet fi rewall is confi gured for this option.

Includes: IP Link module, 10 ft. long Ethernet cable, and installation
instructions. Prism 2 computer front-end software must be installed on the
remote computer in order to dial-up and communicate with the controls
system.

OE366

USB-Link 2 Kit

The USB-Link 2 is a pocket-sized communications interface used to
connect a laptop computer to your controls system for programming and
monitoring purposes, utilizing a modular cable to allow connection to the
service port connector on the controllers and a USB cable to connect to a
laptop computer.

Includes: USB-Link 2 for multiple or single loop systems, USB cable,
modular connection cable, two mini-DIN to terminal adapters, and Prism 2
software.

VCB-X Controller Field Technical Guide

See IP
Module
Technical
Guide

See USB­Link 2
Technical
Guide

Revised 9/23/13

11

OVERVIEW

Parts and Descriptions

PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.

OE364-22 MiniLink Polling Device

Control enclosure is for indoor use only. Used with all Orion controllers
to provide network communications, zone voting, alarming, and tenant
logging capabilities. A MiniLink Polling Device is required on each loop
of a Networked system. Includes: MiniLink Polling Device mounted in
the EE000075-01 control enclosure. Control Enclosure cover is shown
removed in picture.

OE508 Prism 2 Front-End Computer Software

Prism 2 provides standard, easy to understand status screens for each
type of VCB-X equipment installed. Prism software has provisions for cus­tom screens which allow fl oor plans, equipment photos, or user-defi ned
summary screens to be implemented to meet their own individual needs.
All controlling setpoints, trend logs, and alarm conditions are accessed in
the Prism environment. Prism can be confi gured for direct on-site installa-
tion, remote modem connection, or TCP/IP Internet connection to several
installations.

OE365­15-EBA-A

E-BUS Adapter Board

The E-BUS Adapter Board is used for connecting the EBTRON® or
GreenTrolTM Airfl ow Measurement Digital Transmitter to the VCB-X Control
System. The E-BUS Adapter Board connects to the VCB-X Controller with
an EBC E-BUS cable. Cable supplied separately.

MS000248

E-BUS Adapter Hub

The E-BUS Adapter Hub is used for connecting E-BUS devices and
Controllers together with EBC E-BUS cables of varying lengths. Includes:
E-BUS Adapter Hub.

U1

CX7

RV1

CX3

VREF

U3

U4

CX2

R4

LED 1

LED 2

EPROM

POWER

C8

C7

R25

R26

V1

AIN1

R27

THERM

4-20mA

U12

0-10V

R31

OFF=0-5V

D4

+5V

GND

24VAC

C11

D5

TB2

TB1

U7

P1

CX1

C4

C1

R3

YS101818P552

X1

CX4

PROCESSORPBOARD

C1

C2

CX5

U5

RAM

CX2

AIN2

THERM

4-20mA

0-10V

GND

AIN 2

AIN 1

X1

CX6

C3

U6

PHILIPS

U10

YS101900PMINILINK

D1

POLLING

U1

DEVICE

1

REV. 1

R1

U6

CX1

C3

U2

CX6

RN2

U11

R2

WDOG

R24

C10

C9

RN3

LD4

PROC.

LOOP

NETWORK

DRIVER

DRIVER

DRIVER

X2

CX15

CX14

CX13

P3

R28

U14

U15

U13

R29

R30

LD6

LD5

NETWORK

LOCAL LOOP

LOOP

2

4

8

1

32

16

P5

P4

SHLD

T

R

SHLD

T

R

ADD

OFF

TB3

TB4

SW1

Pages 28,
29 & 51

Pages
28 & 29

HZ-EBC-248 E-BUS Adapter Hub with 1.5 Foot EBC E-BUS Cable

The E-BUS Adapter Hub is used for connecting E-BUS devices and
Controllers together with EBC E-BUS cables of varying lengths. Includes:
E-BUS Adapter Hub and 1.5 foot EBC E-BUS cable.

OE437-03 Communication Surge Protector Kit

Used to isolate power surges to the communications wiring caused by
lightning strikes for communications wiring loops that are routed outdoors
or between buildings. One kit is required at each point where the commu­nications wiring leaves or enters a building.
Includes: Communication Bus Surge Protector, Base Module, and Mount­ing/Wiring Instructions.

OE310-21-LP Lighting Controller

Adds lighting control capability to the VCB-X Control System. Lighting
Controller provides up to (7) independent time schedules. Provisions for
photocell or light sensor light level control are also provided. Lighting
Controller only provides Pilot Duty Relay Outputs. An external Lighting
Contactor must be provided by others. If a Light Sensor OE259 is to be
used with the Lighting Controller, it must also be ordered from WattMaster.
Includes: Lighting Controller with Backplate.

OE259 Light Sensor

Ambient Light Sensor

(Use with Lighting Controller for light sensing.)
24VDC power, 1m Ohm to 1.5k Ohm output signal. Supplied with weather­proof handy box for outdoor or indoor mounting. Light Sensor threads into
conduit fi tting. Includes: Light Sensor and weatherproof handy box.

Pages
28 & 29

N/A

N/A

N/A

12

Revised 1/23/13

VCB-X Controller Field Technical Guide

OVERVIEW

Parts and Descriptions

PART NO. PART DESCRIPTION ILLUSTRATION PAGE NO.

OE377-26­00058

OE377-26­00059

OE332-23­GPCX

MODGAS-X Controller

The

MODGAS-X Controller modulates up to (2) gas valves to maintain
a desired Discharge Air Temperature. It also controls the speed of the
induced draft fan to maintain proper combustion in the heat exchanger.

The MODGAS-X Controller connects to the VCB-X Controller via an EBC
E-BUS cable. Available only from AAON.

MHGRV-X Controller

The MHGRV-X Controller controls a Modulating Hot Gas Reheat Valve to
maintain a desired Supply Air Temperature and Dehumidifi cation setpoint.
The MHGRV-X Controller connects to the VCB-X Controller via an EBC
E-BUS cable. Available only from AAON.

GPC-X Controller

The GPC-X Controller provides the fl exibility to control, schedule, and/or
monitor equipment such as unit heaters, exhaust fans, motorized louvers,
etc. The GPC-X has (6) confi gurable inputs which will accept signals from
thermistor temperature sensors, 4-20mA or 0-5 VDC transmitters, or dry
contact closures. An additional modular input is provided for connection
of an OE271 Static Pressure Sensor. The GPC-X has (5) relay outputs for
on/off control and (2) analog outputs. The GPC-X also has (5) separate
2-events-per-day schedules, each with its own optimal start functions
built in. In addition, the GPC-X provides Lead/Lag start capabilities. Use
the GPC-X to provide additional schedules for your controllers. Includes:
OE332-23-GPCX Controller.

Page 53

Page 52

See GPC-X
Technical
Guide

OE338-23­GPCXP

GPC-XP Controller

The GPC-XP Controller is used for controlling equipment or processes
that cannot be controlled using a standard HVAC controller. Prism 2 com­puter front end software is used to interface with the GPC-XP
Controller functions. The GPC-XP Controller provides the fl exibility to
control, schedule, and/or monitor equipment such as unit heaters, exhaust
fans, motorized louvers, and other mechanical equipment. In addition, the
GPC-XP provides Lead/Lag start capabilities.

The GPC-XP has 8 confi gurable analog inputs which will accept signals
from thermistor temperature sensors, 4-20mA or 0-5VDC or 0-10VDC
transmitters. Custom forumulas created by available math functions and
operators can be used in conjunction with the analog inputs to create a
calculated value to be used and displayed for a specifi c analog input.
The inputs are set for the desired scaling by means of a jumper bar. An
additional input is available for communicating sensors available from
WattMaster Controls. The GPC-XP also supports 8 wet contact binary
inputs which can be confi gured for either normally open or normally
closed operation. The GPC-XP has 8 relay outputs for on/off control and
4 analog outputs for proportional control signals. Highest/lowest/average
of the analog input values can be used in the GPC-XP logic or broadcast
to other controllers on the control system loop. The GPC-XP also has 8
separate 2 events per day schedules which can be assigned to any input
or output for operational control or alarm recognition based on time of day.
These schedules can also be confi gured to broadcast to other WattMaster
HVAC equipment installed on the control system loop. Includes: OE338­23-GPCXP Controller.

BINARY
INPUTS

ANALOG
INPUTS

VDC
OUTPUTS

LOOPCOMM

T-

SH

R+

TB1

D6

D7

D8

D9

D10

D11

D12

D13

COM

COM

COM

COM

TB3

0-5v

AI1

AI2

AI3

AI4

AI5

AI6

AI7

AI8

GND

GND

GND

GND

TB7

+24V

+5V

GND

TB8

ON BOA
COMMLI
CONNEC

R38

BIN1

300

R41

BIN2

300

R43

300

BIN3

R47

300

BIN4

RLY1 =

BIN5

300

RLY2 =

300

BIN6

RLY3 =

300

BIN7

RLY4 =

R61R59R55R51

300

BIN8

AI1 =

AI2 = BI2 = AO2 =

CUTTOISOLATE
COMFROMGND

AI3 = BI3 = AO3 =

AI4 = BI4 = AO4 =

AI5 = BI5 =

AI6 = BI6 =

4-20mA

THERM

AI7 = BI7 =

0-10v

AI8 = BI8 =

ANALOG

AI1

JUMPERS

AI2

AI1

AI3

AI2

AI3

AI4

AI4

AI5

AI5

AI6

AI7

AI6

AI8

AI7

OUTPUTS

AI8

+ 24VDC
+ 5VDC
GND

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

www.wattmaster.com

OE338-23-GPC-XP

GPC-XPCONTROLLER

BI1 = AO1 =

INPUT

LEDNAME STATUS1 STATUS2

NORMALOPERATION 0 1
SCHEDULEOVERRIDE 0 2

4-20mA

0-10V

0-5V

THERM

NOTES:

1.)ANALOG INPUTJUMPER SETTINGS MUST BE
SETFORYOUR SPECIFIC INPUT DEVICE
REQUIREMENT.

2.) ITIS RECOMMENDEDTHATYOU WRITE THE
DESCRIPTION OFTHE INPUT,AND/OR
OUTPUTSYOUARE CONNECTING TO THE
CONTROLLER INTHE BOXES PROVIDEDABOVE
USINGAPERMANENT MARKER (SHARPIE) FOR
FUTURE REFERENCE.

VDC

24 VAC POWER ONLY

WARNING!POLARITYMUST BE OBSERVED
OR THE CONTROLLER WILLBE DAMAGED

GND

+24VAC

YS102432 REV 3

WATTMASTER CONTROLS

RELAYCONTACT

MADE IN USA

RATING IS 1AMP
MAX @ 24 VAC

RLY1

RELAY1

RLY2

RELAY2

RLY3

RELAY3

RLY4

RELAY4

COMMON

COMMON

TB2

RELAY5

RELAY

RELAY6

LEDBLINK CODES

USB
PORT

OUTPUTS

TB4

RELAY7

RLY1

RELAY8

RLY2

COMMON

RLY3

RLY4

COMMON

SERIAL#

ANALOG
OUTPUTS

1002

R74
U17

AOUT1

AOUT1-2

AOUT2

.1uF

AOUT3

C36

R97

1002

AOUT4

U19

AOUT3-4

GND

GND

.1uF

C46

TB6

GND

STATUS1

STATUS2

EBUS

POWER

®

1002

R21

1002

R109

1002

R16

1002

R14

.1uF

C21

ADDRESS

ADD

1002

1

1002

2

1002

4

1002

8

1002

16

1002

32

WattMaster Label

1002

E-BUS

LOOP

BAUD

1

#LB102095

1002

PORT

Rev.: 1C

2

SW1

C14

.01uF

See GPC­XP Technical
Guide

RLY5 =

RLY6 =

RLY7 =

RLY8 =

VCB-X Controller Field Technical Guide

13

OVERVIEW

VCB-X Controller Dimensions

5.50

LOOP COMM

485 DRV

T-

SH

LT1785

U

.1uF

R+

TB1

BINARY
INPUTS

P5

BIN1

D6

BIN2

D7

BIN3

D8

BIN4

R38

D9

30

COM

R41

30

R43

COM

30

CUTTO ISOLATE

COM FROM GND

R63

GND

BACNET

T-

SH

R+

TB7

AI1

AI2

AI3

AI4

AI5

GND

GND

TB4

SERIAL #

SERIAL #

R47

30

R1

+3.3V

J1

+5V

3650

R68

485 DRV

4751

LT1785

U2

.1uF

C81

+12V

GND

3650

R17

3650

R20

3650

R22

7.85

TB3

ANALOG
INPUTS

APP HB

OS HB

WDOG

2.75

YS102442 REV 1

WATTMASTER CONTROLS

MADE IN USA

RLY1

RLY2

RLY3

RLY4

RLY5

RLY6

COMMON

TB2

RELAY

OUTPUTS

ALERT

3650

R82

24VAC

DIGITAL

COMP

UNLOAD

C30

ANALOG

1002

R51

OUTPUTS

2201

R59

U17

AOUT1

AOUT2

.1uF

AOUT3

C36

2201

R73
U19

GND

AOUT3AOUT1-2

GND

.1uF

STATUS 1

C46

STATUS 2

EBUS

POWER

R21

R109

R16
R14

.1uF

C21

ADDRESS

1002

1002

1002

1002

OFF

1002

1002

1002

1

1002

2

SW1

C14

.01uF

Zone

P2

P3

TB6

3650

3650

3650

3650

ADD

1
2
4
8

16
32

BAUD

LOOP

Zone

8.38

7.91

0.70

Figure 1: VCB-X Controller Dimensions

14

0.70

2.05

1.50

VCB-X Controller Field Technical Guide

5.00

0.20

J2

TB7

R58

STATIC PRESSURE

TB1

T1

T2

T3

GND

GND

TEMP SENSOR INPUTS

TB2

+5V

1004

1002

SIG1

10uF

GND

1004

1002

SIG2

10uF

GND

PRESSURE SENSOR INPUTS

BIN1

BIN2

BIN3

BINARY INPUTS

OFF

ADDRESS

1002

1002

ON

1
2

INSTALLATION & WIRING

VCB-X EM1 Dimensions

5.83

5.34

2.67

R53

R49

R48

R46

R45

5621

5621

5621

5621

R1

R2

R3

R4

R5

RELAY CONTACT

RATING IS 1 AMP

MAX @ 24 VAC

RC

AAON No.:

V13010

EXHAUST

CHILLED WATER

CONDENSER 2
CONDENSER 1

RELAY OUTPUT

TERMINALS

GND

PWM -

PWM +

GND

R24

R29

R31

R35

R57

1001

10uF

C24

Q6

R4

R5

+24 VAC

P1

4992

R1

1002

R1

10uF

C4

D4

1002

R9

1002

R10

10uF

C3

D24

1002

R15

1002

R16

10uF

C5

D25

1002

R18

1002

R19

10uF

C6

D26

VREF

5.

R22
R21
C8
D8

R6
R1
C2

D1

47

D12

300

D27

47

D15

300

D28

D18

47

D29

300

R2

R3

www.aaon.com

www.orioncontrols.com

STATIC PRESSURE
SENSOR INPUT

TEMPERATURE SENSOR INPUT

TERMINALS

RETURN AIR TEMP
LEAVING WATER TEMP

HEAD PRESSURE 2
GND

GND

PRESSURE SENSOR INPUT

TERMINALS

+5V

BUILDING PRESSURE

GND

HEAD PRESSURE 1

GND

BINARY INPUT TERMINALS

HOOD

REMOTE OCCUPIED

PROOF OF WATER FLOW

WattMaster Label

E-BUS

CONNECT

#L102100-A

B
Rev.: 1C

VCB-X EM1 Expansion Module

Orion No.:OE336-23-EM1-A

ANALOG OUTPUT TERMINALS

CONDENSER PWM TERMINALS

POWER INPUT TERMINAL BLOCK

24 VAC POWER ONLY

WARNING! POLARITY
MUST BE OBSERVED OR
THE CONTROLLER WILL
BE DAMAGED

E-BUS

CONNECT

YS102482 REV1

D21D20D19D17

3650

3650

3650

3650

R56 R54

1001

1002

R61

1002

1002

J1

Rc

D9

D10

D11

D13

AOUT1

AOUT2

AOUT3

AOUT4

GND

TB9

PWM-

PWM+

OPTIONS

5621

R1

R2

R3

R4

R5

TB3

PWR

ALARM

STAT

COMM

TB6

SERIAL #
1
2

C26

.01uF

5.63

0.62

Figure 2: VCB-X EM1 Expansion Module Dimensions

VCB-X Controller Field Technical Guide

2.05

4.10

1.49" DEPTH

Revised 7/16/14

15

INSTALLATION & WIRING

VCB-X EM2 Dimensions

0.29

TB1

TB7

4.88

4.36

TB8

ANALOG

INPUT

BINARY INPUTS

C23

C22

Zone

Zone

2.00

YS102484
REV 1

AIN

.1uF

C4

D4

GND

1002

R12

1002

R1

1002

J2

R58

D12

3001

D27

BIN1

D15

3001

D28

BIN2

D18

D29

BIN3

R52

+24VAC

GND

3001

D22

D201

V6

www.aaon.com

OE336-23-EM2

VCB-X EM2 EXPANSION MODULE

AAON: V35130

ANALOG INPUT TB

ECONO FEEDBACK / RST SIG

4751

4751

4751

L20

GND

BINARY INPUT TB

REMOTE FORCED COOLING
REMOTE FORCED HEATING
REMOTE FORCED DEHUMID.

RETURN AIR BYPASS DAMPER

RETURN AIR DAMPER

24 VAC POWER ONLY

WARNING! POLARITY MUST BE

OBSERVED OR THE CONTROLLER

WILL BE DAMAGED

POWER INPUT TERMINAL BLOCK

+24 VAC

E-BUS

CONNECT

www.orioncontrols.com

ANALOG OUTPUT TB

ANALOG OUTPUT TB

GND

WattMaster Label

#L102189

GNDGND

Rev.: 1C

E-BUS

CONNECT

1002

1002

1002

1002

B

SERIAL #

C28 C27

22pF

22pF

R32
R33

R42
R41

R2
R3

C13

1002

1002

R35
R31
R29
R24

D9

D10

D11

D13

AOUT1

AOUT2

ANALOG OUTPUTS

ADDRESS

S1

OFF

3650

3650

3650

3650

PWR

ALARM

STAT

COMM

TB2

GND

1
2

C26

.01uF

Figure 3: VCB-X EM2 Expansion Module Dimensions

16

Revised 7/16/14

2.670.67

4.29

1.49 DEPTH

VCB-X Controller Field Technical Guide

INSTALLATION & WIRING

VCB-X 12 Relay Module Dimensions

6.06

5.52

2.76

5.00

0.20

SERIAL #

RLY-COM

RLY1

RLY2

RLY3

RLY4

TB3

RLY-COM

RLY5

RLY6

RLY7

RLY8

TB2

RELAY

EXPANSION BOARD

WATTMASTER CONTROLS

YS102324 REV 2

1002

R40

D6

COMM

RLY-COM

ADDRESS

J1

OFF

C213

C214

1000pF

R214
R212
R211
R213

MADE IN USA

RLY9

RLY10

RLY11

RLY12

TB1

SW1

1002

1002

1002

1002

R44

R43

R42

R41

R8

GND

24VAC

POWER

ADD

1
2
4
8

1002

TB10

D3

.1uF

5.63

Figure 4: VCB-X 12 Relay Module Dimensions

VCB-X Controller Field Technical Guide

2.050.71

4.10

1.49" DEPTH

17

OVERVIEW

Controller with Enclosure Components

RS-485

LOOP LED

Communication
Wire Terminals

Communication
Port

Binary Input
Terminals

Binary Input
LED - Typ. of 4

BACnet
Protocessor
Terminal Block

Analog Input
Terminals

Troubleshooting
LEDs

Communications
Driver Chip

3650

R68

BACNET

485 DRV

T-

SH

LT1785

R+

U2

.1uF

TB7

C81

VCB-X CONTROLLER

ALARM

CANCEL

RS-485 COMM
LOOP. WIRE

“R” TO “R”,
“T” TO “T”
“SHLD” TO “SHLD”

VCB-X CONTROLLER

Orion No.: OE335-26B-VCBX

ANALOG INPUTS

AI1 = SPC (SPACE TEMP SENSOR)
AI2

= SAT (SUPPLY AIR TEMP SENSOR)

AI3

= OAT (OUTDOORAIR TEMP SENSOR)

AI4

= DCT (DIGITALCOMP DISCH TEMP SENSOR)

AI5

= SPACE TEMPERATURE SLIDE OFFSET

BINARY INPUTS

BI1

= EMERGENCY SHUTDOWN

BI2

= PROOF OF FLOW

BI3

= DIRTY FILTER

BI4

= COIL TEMP SWITCH

G OUTPUTS

ANALO

AO1

= FAN VFD

AO2

= ECONOMIZER

AO3

= MOD HEATING

TRIAC OUTPUT

TR1

= DIGITAL COMP
UNLOADER
(24 VAC & UNLOAD

TERMINALS)

WattMaster Label

#SW000061

Rev.: 1A

24 VAC POWER

ONLY

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

GND

+24 VAC

www.aaon.com

E-BUS

EXPANSION

UP

X

DOWN

www.orioncontrols.com

AAON : V28940

AAON Coil: J00142

Zone

ENTER

RELAY CONTACT
RATING IS 1AMP
MAX @ 24 VAC

FAN

RELAY 2

RELAY 3

RELAY 4

RELAY 5

RELAY 6

RELAY
COMMON

E-BUS

EXPANSION

Zone

MADE IN USA

Relay Output
Terminals

Relay Output
LED - Typ. of 6

ALERT LED

Digital Compressor
Unloader Spade
Terminals

UNLOAD LED

Analog Output
Terminals

Diagnostic
Blink Code
LEDs

EBUS LED

POWER LED

Address Switch

24 VAC
Power Input

Figure 5: VCB-X Controller w/Enclosure Components

18

E-BUS
Connection

E-BUS
Connection

VCB-X Controller Field Technical Guide

INSTALLATION & WIRING

Important Wiring Considerations

General

Correct wiring of the VCB-X Controller is the most important
factor in the overall success of the controller installation process. In
general, most VCB-X Controllers are factory installed and wired at
the AAON
through your local AAON®/Orion representative for installation in
the fi eld. Some of the following information pertains to fi eld wiring
and may not apply to your installation if it was pre-wired at the
factory. However, if troubleshooting of the controller is required, it
is a good idea to be familiar with the system wiring, no matter if it
was factory or fi eld wired.

®

factory. It is also possible to purchase these controllers

Controller Mounting

When the controller is to be fi eld mounted, it is important to mount
the controller in a location that is free from extreme high or low

temperatures, moisture, dust, and dirt. See Table 1 for a list of

the required operating conditions for the VCB-X Controller and
associated expansion modules.

The VCB-X Controller is housed in a plastic enclosure. It is designed
to be mounted by using the 3 mounting holes in the enclosure base.
The VCB-X Controller needs to be installed in an environment
which can maintain a temperature range between -30°F and 150°F
not to exceed 90% RH levels (non-condensing). Be careful not to
damage the electronic components when mounting the controller.

Considerations

WARNING: When using a single transformer to power more

than one controller or expansion module, the
correct polarity must always be maintained be­ tween the boards. Failure to observe correct
polarity will result in damage to the VCB-X
Controller and expansion modules.

Please carefully read and apply the following information when

wiring the VCB-X Controller or the Expansion Modules. See Figures
6 & 7 for VCB-X input and output wiring. See Figures 22 & 23 for
the VCB-X EM1 Expansion Module wiring, Figures 34 & 35 for
VCB-X EM2 Expansion wiring, and Figure 36 for the VCB-X 12

Relay Expansion Module wiring.

1. All wiring is to be in accordance with local and national
electrical codes and specifi cations.

2. All 24 VAC wiring must be connected so that all ground
wires remain common. Failure to follow this procedure
can result in damage to the controller and connected
devices.

3. Minimum wire size for 24 VAC wiring should be

18-gauge.

4. Minimum wire size for all sensors should be 24-gauge.

Some sensors require 2-conductor wire and some require
3-or 4-conductor wire.

The VCB-X Controller and expansion modules must be connected
to a 24 VAC power source of the proper size for the calculated VA
load requirements. All transformer sizing should be based on the

VA rating listed in Table 1.

Device

Control

OE335-26B-VCB-X-A

VCB-X Controller

OE336-23-EM1-A 24VAC 5

OE336-23-EM2-A 24VAC 5

OE358-23E-12R-A 24VAC 15

Voltage

24VAC 8

VA Load

Temperature

-30°F to
150°F

-30°F to
150°F

-30°F to
150°F

-30°F to
150°F

(Non-

Humidity

Condensing)

90% RH

90% RH

90% RH

90% RH

Table 1: Voltage and Environment Requirements

5. Minimum wire size for 24 VAC thermostat wiring
should be 22 gauge.

6. Be sure that all wiring connections are properly inserted
and tightened into the terminal blocks. Do not allow
wire strands to stick out and touch adjoining terminals
which could potentially cause a short circuit.

7. When communication wiring is to be used to intercon­ nect VCB-X Controllers together or to connect to other
communication devices, all wiring must be plenum­ rated, minimum 18-gauge, 2-conductor, twisted pair with
shield. WattMaster can supply communication wire that
meets this specifi cation and is color coded for the
network or local loop. Please consult your WattMaster
distributor for information. If desired, Belden #82760 or
equivalent wire may also be used.

8. Before applying power to the VCB-X Controller,
be sure to recheck all wiring connections and
terminations thoroughly.

VCB-X Controller Field Technical Guide

19

INSTALLATION & WIRING

VCB-X Controller Input Wiring

Zone

Zone

VCB-X Controller Inputs

The VCB-X Controller is designed with 5 analog inputs, 3 analog
outputs, 1 triac output, 4 binary inputs and 6 relay outputs.

There are also 2 E-BUS Expansion Ports which allow the use of
communicating sensors and the E-BUS Modules.

EMERGENCY SHUTDOWN SWITCH

PROOF OF FLOW SWITCH

DIRTY FILTER SWITCH

DEFROST COIL TEMPERATURE SWITCH

SPACE

TEMPERATURE SENSOR

TEMP

WW
AA

GND

RR
MM
EE

AUX

RR

NORMALNORMAL

CC
OO
OO

OVROVR

LL
EE
RR

SUPPLY AIR TEMP. SENSOR

OUTDOOR AIR

TEMPERATURE SENSOR

DIGITAL COMPRESSOR

DISCHARGE TEMPERATURE

SENSOR

See Figures 6 & 7 for wiring details. Detailed wiring for all inputs

and outputs are found on the pages that follow.

VCB-X CONTROLLER

MADE IN USA

BIN1
BIN2
BIN3

BIN4
COM
COM

AI1
AI2
AI3
AI4

AI5
GND
GND

TB7

BACNET

ALARM

UP

X

CANCEL

RS-485 COMM
LOOP. WIRE

“R” TO “R”,
“T” TO “T”
“SHLD” TO “SHLD”

VCB-X CONTROLLER

Orion No.: OE335-26B-VCBX

ANALOG INPUTS

AI1 = SPC (SPACE TEMPSENSOR)

= SAT(SUPPLY AIR TEMP SENSOR)

AI2

3650

R68

= OAT(OUTDOOR AIR TEMP SENSOR)

AI3

485 DRV

= DCT (DIGITALCOMP DISCH TEMP SENSOR)

T-

SH

R+

AI4

= SPACETEMPERATURE SLIDE OFFSET

AI5

BINARY INPUTS

4751

LT1785

= EMERGENCY SHUTDOWN

BI1

U2

.1uF

C81

= PROOF OF FLOW

BI2

= DIRTY FILTER

BI3

= COIL TEMPSWITCH

BI4

ANALO

= FAN VFD

AO1

= ECONOMIZER

AO2

= MOD HEATING

AO3

TRIAC OUTPUT

= DIGITALCOMP

TR1

UNLOADER
(24 VAC & UNLOAD

TERMINALS)

WattMaster Label

#SW000061

Rev.: 1A

24 VAC POWER

ONLY

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

G OUTPUTS

GND

+24 VAC

www.aaon.com

E-BUS

EXPANSION

ENTER

DOWN

www.orioncontrols.com

AAON : V28940

AAON Coil: J00142

RELAYCONTACT
RATING IS 1AMP
MAX @ 24 VAC

FAN

RELAY2

RELAY3

RELAY4

RELAY5

RELAY6

RELAY
COMMON

E-BUS

EXPANSION

Figure 6: VCB-X Controller Input Wiring

20

24VAC

GND

Line Voltage

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

VCB-X Controller Field Technical Guide

INSTALLATION & WIRING

VCB-X Controller Output Wiring

VCB-X Controller Outputs

The VCB-X Controller must be connected to 24 VAC as shown

in the wiring diagram below. Please see Table 1 for correct VA

requirements to use when sizing the transformer(s) used for powering
the Controller.

NOTE: RELAY CONTACTS R1-R5 MAY BE CONFIGURED FOR:

1.) HEATING STAGES

2.) COOLING STAGES

3.) DIGITAL COMPRESSOR

VCB-X CONTROLLER

ALARM

CANCEL

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

VCB-X CONTROLLER

Orion No.: OE335-26B-VCBX

ANALOG INPUTS

AI1 = SPC (SPACE TEMPSENSOR)
AI2

= SAT(SUPPLY AIR TEMP SENSOR)

AI3

= OAT(OUTDOOR AIR TEMP SENSOR)

AI4

= DCT (DIGITALCOMP DISCH TEMP SENSOR)

AI5

= SPACETEMPERATURE SLIDE OFFSET

BINARY INPUTS

BI1

= EMERGENCY SHUTDOWN

BI2

= PROOF OF FLOW

BI3

= DIRTY FILTER

BI4

= COIL TEMPSWITCH

ANALO

AO1

= FAN VFD

AO2

= ECONOMIZER

AO3

= MOD HEATING

TRIAC OUTPUT

TR1

= DIGITALCOMP
UNLOADER
(24 VAC & UNLOAD

TERMINALS)

WattMaster Label

#SW000061

Rev.: 1A

24 VAC POWER

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

G OUTPUTS

ONLY

GND

+24 VAC

www.aaon.com

E-BUS

EXPANSION

UP

X

DOWN

www.orioncontrols.com

AAON : V28940

AAON Coil: J00142

ENTER

RELAYCONTACT
RATING IS 1AMP
MAX @ 24 VAC

FAN

RELAY2

RELAY3

RELAY4

RELAY5

RELAY6

RELAY
COMMON

E-BUS

EXPANSION

MADE IN USA

4.) CONDENSER

5.) REVERSING VALVE

6.) HEAT PUMP COMPRESSOR

7.) PREHEAT

R1
R2
R3
R4
R5
R6

COMM

24 VAC

UNLOAD

AOUT1
AOUT2
AOUT3
GND
GND

Also please note that when wiring the VCB-X Controller, its contacts
must be wired as wet contacts (connected to 24 VAC).

8.) AUX HEAT

9.) LOW AMBIENT

10.) ALARM

11.) OVERRIDE

12.) OCCUPIED

13.) ECONOMIZER

14.) MOD HEAT ENABLE

24 VAC ONLY

G

SUPPLY FAN
CONFIGURABLE RELAY OUTPUT #2
CONFIGURABLE RELAY OUTPUT #3

CONFIGURABLE RELAY OUTPUT #4
CONFIGURABLE RELAY OUTPUT #5

CONFIGURABLE RELAY OUTPUT #6

R

24 VAC POWER

NOTE:
ALL RELAY OUTPUTS ARE NORMALLY
OPEN AND RATED FOR 24 VAC POWER
ONLY - 1 AMP MAXIMUM LOAD

SUPPLY FAN VFD

COM

+

MODULATING HEATING

(SCR OR HOT WATER VALVE)

COM

15.) EMERGENCY HEAT

16.) MOD COOL ENABLE

17.) MORNING WARM-UP /
COOL-DOWN

18.) REHEAT

19.) EXHAUST FAN

20.) HEAT WHEEL

HVAC UNIT CONNECTIONS

DIGITAL COMPRESSOR

+

GND

ECONOMIZER

ACTUATOR

COM1

2+

Y13

Line
Voltage

24VAC

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

Figure 7: VCB-X Controller Output Wiring

VCB-X Controller Field Technical Guide

GND

+

Revised 4/11/14

21

INSTALLATION & WIRING

E-BUS Digital Room Sensor Wiring

Zone

Zone

E-BUS Digital Room Sensor

The OE217-02 E-BUS Digital Room Temperature Sensor can be
used to sense Space Temperature. The OE217-03 or OE217-04
E-BUS Digital Room Temperature Sensor can be used to sense Space
Temperature and Humidity. The OE217-04 has no LCD display or
keypad. The Sensor connects to the VCB-X Controller with the EBC
E-BUS expansion cable. It can also be daisy-chained with a CO
Sensor for applications requiring both a wall mounted CO2 sensor
and space temperature sensor.

VCB-X Controller

AO2
AO3

TRIAC OUTPUT

TR1

Note: When Only The E-BUS
Room Sensor Is Used, It
Directly To The Controller Using
A Of The

n EBC E-BUS Cable

Appropriate Length.

VCB-X

Mount At Least 5
Feet Above Floor. See For
Connection When A Wall Mounted
E-BUS C Sensor Is Also Used.

O

2

Connects

Figure 9

Digital

WattMaster Label
#LB102093-01-A

24 VAC POWER

POLARITY MUST

The E-BUS Digital Room Sensor should be mounted at approximately
5 Ft. above the fl oor on the wall in an area that does not have drafts

or is exposed to direct sunlight. See Figure 8 for wiring details.

NOTE: If using multiple E-BUS Sensors or Modules, the

E-BUS Hub or Adapter Board may be required.

2

=

= SC

= DIGITALCO

Rev.: 1C

ONLY

WARNING!

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

24 VAC

INPUT

E-BUS

EXPANSION

E-BUS

EXPANSION

OVERRIDE ALARM

Display

Override

OE217-02, OE217-03, OE217-04

E-BUS Digital Room Sensor

Figure 8: OE217-02, OE217-03, OE217-04 – E-BUS Digital Room Sensor Wiring

22

Revised 4/30/12

E-BUS Cable

(EBC Cable)

VCB-X Controller Field Technical Guide

INSTALLATION & WIRING

Wall-Mounted E-BUS CO2 Sensor Wiring

E-BUS CO2 Wall-Mounted Sensor

The OE256-05 Wall Mounted E-BUS CO2 Sensor is used to monitor
CO2 levels in the space served by the HVAC unit. The E-BUS CO
Sensor connects to the VCB-X Controller with an EBC E-BUS
cable. It can be daisy-chained with the E-BUS Digital Room Sensor
( OE217-02, OE217-03, OE217-04) for applications requiring both
a room CO2 sensor and room temperature sensor.

VCB-X Controller

OE256-05

E-BUS Wall-Mounted

CO Sensor

2

It should be mounted at approximately 5 Ft. above the fl oor on
the wall in an area that does not have drafts or is exposed to direct

sunlight. See Figure 9 for wiring details and installation notes. A

Duct Mounted E-BUS CO2 Sensor can be used if desired instead

2

of the Wall Mounted E-BUS CO

Sensor. See Figure 10 for Duct

2

Mounted E-BUS CO2 Sensor wiring details.

NOTE: If using multiple E-BUS Sensors or Modules, the

E-BUS Hub or Adapter Board may be required.

AO2

=

AO3

= SC

TRIAC OUTPUT

TR1

= DIGITALCO

WattMaster Label
#LB102093-01-A

Rev.: 1C

Note: Mount Both
Sensors At Least
5 Feet Above Floor.
The E-BUS Digital
Room Sensor
Connects To The
E-BUS

CO

Sensor.

2

OE217-02,

OE217-03, or OE217-04

E-BUS Digital Room Sensor

OVERRIDE ALARM

Display

24 VAC POWER

ONLY

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

24 VAC
INPUT

Override

E-BUS

EXPANSION

E-BUS

EXPANSION

E-BUS Cable

E-BUS Cable

(EBC Cable)

(EBC Cable)

Figure 9: OE256-05 – Wall Mounted E-BUS CO2 Sensor Wiring

VCB-X Controller Field Technical Guide

Revised 4/30/12

23

INSTALLATION & WIRING

Duct Mounted E-BUS CO2 Sensor

Zone

Zone

Duct Mounted E-BUS CO2 Sensor

The OE256-07 Duct Mounted E-BUS CO2 Sensor with Remote
Pickup Tube is used for sensing the current CO2 level in the HVAC
unit’s return air stream. This is useful when you want an average
CO2 reading in the area served by the HVAC unit or when you don’t
want a wall mounted E-BUS CO2 Sensor due to sensor tampering
concerns in the space.

The OE256-07 Duct Mounted Return Air CO2 Sensor is comprised
of the CO2 Sensor, the WattMaster Aspiration Box Assembly, and a
Remote Pickup Tube.

Note:

1.) The Duct Mounted E-BUS CO Sensor

Connects To The Controller Using An

VCB-X
EBC E-BUS Cable Of The Required Length
Or The Provided 10 Foot EBC Cable.

OE256-07 Duct Mounted

E-BUS CO Sensor

2

2

The Duct Mounted Return Air E-BUS CO2 Sensor with Remote
Pickup Tube is designed to be mounted in the return air duct of the
HVAC unit and uses its integral aspiration box to sample the CO

level in the duct. See Figure 10 below for wiring and installation

details.

NOTE: If using multiple E-BUS Sensors or Modules, the

E-BUS Hub or Adapter Board may be required.

MADE IN USA

BACNET

TB7

ALARM

UP

X

CANCEL

RS-485 COMM
LOOP. WIRE

“R” TO “R”,
“T” TO “T”
“SHLD” TO “SHLD”

VCB-X CONTROLLER

Orion No.: OE335-26B-VCBX

ANALOG INPUTS

AI1 = SPC (SPACE TEMPSENSOR)
AI2

= SAT(SUPPLY AIR TEMP SENSOR)

3650

R68

AI3

= OAT(OUTDOOR AIR TEMP SENSOR)

485 DRV

AI4

T-

SH

R+

U2

= DCT (DIGITALCOMP DISCH TEMP SENSOR)

AI5

= SPACETEMPERATURE SLIDE OFFSET

BINARY INPUTS

LT1785

BI1

= EMERGENCY SHUTDOWN

BI2

= PROOF OF FLOW

.1uF

C81

BI3

= DIRTY FILTER

BI4

= COIL TEMP SWITCH

G OUTPUTS

ANALO

AO1

= FAN VFD

AO2

= ECONOMIZER

AO3

= MOD HEATING

TRIAC OUTPUT

TR1

= DIGITALCOMP
UNLOADER
(24 VAC & UNLOAD
TERMINALS)

WattMaster Label

#SW000061

Rev.: 1A

24 VAC POWER

ONLY

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

GND

www.aaon.com

E-BUS

+24 VAC

EXPANSION

ENTER

DOWN

www.orioncontrols.com

AAON : V28940

AAON Coil: J00142

RELAYCONTACT
RATING IS 1AMP
MAX @ 24 VAC

FAN

RELAY2

RELAY3

RELAY4

RELAY5

RELAY6

RELAY
COMMON

E-BUS

EXPANSION

2

EBC E-BUS

Cable

with Jack

Connection

Figure 10: OE256-07 - Duct Mounted E-BUS CO2 Sensor Wiring

24

Revised 4/30/12

VCB-X Controller

4 3 2 1

1.2
37X04

3M

<PC>

1.6

10 Foot EBC
E-BUS Cable

(Provided)

VCB-X Controller Field Technical Guide

INSTALLATION & WIRING

Space Temperature Sensor Wiring

Space Temperature Sensor

The OE210, OE211, OE212, OE213 Space Temperature Sensor
is typically used for constant volume HVAC unit applications
controlling one zone. The Space Temperature Sensor is a 10K Type
III thermistor sensor and should be mounted approximately 5 feet
above the fl oor in the space that is to be controlled.

OE210, OE211, OE212, OE213

Space Temperature Sensor

The Space Temperature Sensor is available as a sensor only, sensor
with override button, sensor with slide adjust, and sensor with slide
adjust and override confi gurations.

See Figur e 11 below for complete Space Temperature Sensor wiring

details.

VCB-X Controller

AI1

W

A
R
M
E
R
C
O
O

OVR

L
E
R

TMP

GND

AUX

AI5

GND

Wire Required For
Sensors With Slide
Adjust Option Only

Figure 11: OE210, OE211, OE212, OE213 – Space Temperature Sensor Wiring and Slide Adjust

VCB-X Controller Field Technical Guide

25

INSTALLATION & WIRING

Supply Air Temperature Sensor Wiring

Supply Air Temperature Sensor

The OE231 Supply Air Temperature Sensor must be wired as shown
for proper operation. The Supply Air Temperature Sensor is a 10K
Type III thermistor sensor. The Supply Air Temperature Sensor
should be mounted in the unit discharge plenum or in the supply air

duct. See Figure 12 below for details.

Zone

Zone

OE231 Supply Air Temperature Sensor

Mount In HVAC

Unit Supply

Air Duct

VCB-X Controller

AI2

GND

Figure 12: OE231 – Supply Air Temperature Sensor Wiring

26

VCB-X Controller Field Technical Guide

INSTALLATION & WIRING

Outdoor Air Temperature Sensor Wiring

Outdoor Air Temperature Sensor

The OE250 Outdoor Air Temperature Sensor must be wired as shown
for proper operation of the VCB-X Controller. The Outdoor Air
Temperature Sensor is a 10K Type III thermistor sensor. The sensor
should be mounted in the upright position as shown in an area that
is protected from the elements and direct sunlight. Be sure to make
the wiring splices inside of the Outdoor Air Temperature Sensor

weather-tight enclosure. See Figure 13 below for details.

OE250 Outdoor Air

Temperature Sensor

Make Splice Connections

Inside Sensor Enclosure

As Shown. Seal All Conduit

Fittings With Silicone

Sealant

For applications involving Outdoor Air Humidity, the OE265-15-A
E-BUS Outside Air & Humidity Sensor must be used instead. See

Figure 14 for details.

CAUTION: Be sure to mount the Outdoor Air Temperature

Sensor in an area that is not exposed to direct
sunlight. The shaded area under the HVAC unit
rain hood is normally a good location. Unused
conduit opening(s) must have closure plugs
installed and must be coated with sealing com­ pound to provide a rain-tight seal. Water can
damage the sensor.

VCB-X Controller

Mount Sensor Outdoors

In Shaded Protected

Area & In Upright

Position As Shown

AI3

GND

Figure 13: OE250 – Outdoor Air Temperature Sensor Wiring

VCB-X Controller Field Technical Guide

27

Zone

INSTALLATION & WIRING

Zone

E-BUS Outdoor Air Temperature & Humidity Sensor Wiring

E-BUS Horizontal or Vertical Outdoor
Air Temperature & Humidity Sensor

The OE265-15-A (Horizontal) or OE265-16-A (Vertical) E-BUS
Outdoor Air Temperature & Humidity Sensor connects to the VCB-X
Controller. A 10 foot EBC E-BUS cable (provided) plugs into the
Sensor’s attached 3 foot cable and then plugs into the E-BUS port
of the VCB-X Controller or other E-BUS Expansion Board. The
sensor should be mounted in the upright position as shown in an
area that is protected from the elements and direct sunlight. See

Figure 14 below for details.

VCB-X Controller

CAUTION: Be sure to mount the Outdoor Air Temperature

& Humidity Sensor in an area that is not exposed
to direct sunlight. The shaded area under the
HVAC unit rain hood is normally a good
location. Unused conduit opening(s) must
have closure plugs installed and must be coated
with sealing compound to provide a rain-tight
seal. Water can damage the sensor.

NOTE: If using multiple E-BUS Sensors or Modules, the

E-BUS Hub (HZ-EBC-248 or MS000248) or
E-BUS Adapter Board (OE365-15-EBA) may be
required.

AO2

=

AO3

= SC

TRIAC OUTPUT

TR1

= DIGITAL CO

OE265-15-A (Horizontal)
or OE265-16-A (Vertical)

E-BUS Outside Air

Temperature

& Humidity Sensor

(OE265-15-A Shown)

EBC E-BUS Cable

with Jack

Connection

NOTE: Connect the

Sensor to the VCB-X
Controller Using the
Provided EBC E-BUS
Cable.

4 3 2 1

1.2
37X04

3M

<PC>

1.6

WattMaster Label
#LB102093-01-A

Rev.: 1C

24 VAC POWER

ONLY

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

24 VAC

INPUT

E-BUS

EXPANSION

10 Foot EBC E-BUS

Cable (Provided)

E-BUS

EXPANSION

Figure 14: OE265-15-A & OE265-16-A – E-BUS Outdoor Air Temperature & Humidity Sensor Wiring

28

VCB-X Controller Field Technical Guide

INSTALLATION & WIRING

E-BUS Return Air Temperature & Humidity Sensor Wiring

E-BUS Return Air Temperature &
Humidity Sensor

The OE265-17-A E-BUS Return Air Temperature & Humidity
Sensor connects to the VCB-X Controller. A 50 foot EBC E-BUS
cable (provided) plugs into the Sensor’s attached 3 foot cable and
then plugs into the E-BUS port of the VCB-X Controller or other
E-BUS Expansion Board. The sensor should be mounted in the
upright position as shown in an area that is protected from the

elements and direct sunlight. See Figure 15 below for details.

VCB-X Controller

OE265-17-A

E-BUS Return Air

Temperature

& Humidity Sensor

NOTE: Connect the

Sensor to the VCB-X
Controller Using the
Provided EBC E-BUS
Cable.

CAUTION: Be sure to mount the Return Air Temperature

& Humidity Sensor in an area that is not exposed
to direct sunlight. The shaded area under the
HVAC unit rain hood is normally a good
location. Unused conduit opening(s) must
have closure plugs installed and must be coated
with sealing compound to provide a rain-tight
seal. Water can damage the sensor.

NOTE: If using multiple E-BUS Sensors or Modules, the

E-BUS Hub (HZ-EBC-248 or MS000248) or
E-BUS Adapter Board (OE365-15-EBA) may be
required.

AO2

=

AO3

= SC

TRIAC OUTPUT

TR1

= DIGITAL CO

WattMaster Label
#LB102093-01-A

Rev.: 1C

24 VAC POWER

ONLY

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

24 VAC

INPUT

E-BUS

EXPANSION

E-BUS

EXPANSION

4 3 2 1

1.2
37X04

3M

<PC>

1.6

EBC E-BUS Cable

with Jack

Connection

Figure 15: OE265-17-A – E-BUS Return Air Temperature & Humidity Sensor Wiring

VCB-X Controller Field Technical Guide

50 Foot EBC E-BUS

Cable (Provided)

Revised 8/7/13

29

INSTALLATION & WIRING

Suction Pressure Transducer Wiring

Zone

Zone

Suction Pressure Transducer Kit

The OE275-03-A Suction Pressure Transducer Kit is comprised of
the OE275-01 Suction Pressure Transducer, modular cable with a
modular connector on one end and bare stripped wires on the other
end, an E-BUS Adapter Board, and a 3 foot EBC E-BUS Cable. It is
required for any VCB-X application with DX Cooling that requires
Dehumidifi cation.

The Suction Pressure Transducer is used to measure suction pressure
at the HVAC unit’s DX evaporator coil suction line. This suction
line pressure is converted to saturated refrigerant temperature by
the VCB-X Controller. This temperature is used by the VCB-X
Controller to accurately control the compressors to a suction
temperature setpoint to provide optimum performance from the
system during Dehumidifi cation operation.

VCB-X Controller

The Suction Pressure Transducer wires to the VCB-X Controller as

shown in Figure 16 below. In this application, the Suction Pressure

Transducer connects to the E-BUS Adapter Board’s V, SIG, and GND
terminals through a cable. The cable is supplied with a 3-pin Packard
mating connector for attachment to the sensor on one end and has
3 color-coded stripped wires on the other end. The stripped wire
ends can be spliced to other wires to extend the wiring length when
required. The EBC E-BUS Cable connects to the E-BUS Adapter
Board. This cable must then connect to the VCB-X Controller directly
or to a VCB-X Expansion Board connected to the VCB-X Controller.

NOTE: If using multiple E-BUS Sensors or Modules, the

E-BUS Hub (HZ-EBC-248 or MS000248) or
E-BUS Adapter Board (OE365-15-EBA) may be
required.

AO2

=

AO3

= SC

TRIAC OUTPUT

TR1

= DIGITALCO

WattMaster Label
#LB102093-01-A

Rev.: 1C

Suction Pressure Transducer

OE275-01

RD

WH

BK

Caution:

1.) The Schraeder Port Used For Installation Of The
Suction Pressure Transducer Should Be Located In A
Vertical Portion Of The Suction Line To Prevent
Refrigerant Oil From Accumulating In The Sensor.

PL102458-AT

E-BUS Adapter Board

EBC E-BUS Cable

(Included)

Connect to

VCB-X Controller or

Expansion Module

that is Connected to

the VCB-X Controller

24 VAC POWER

ONLY

WARNING!

POLARITY MUST

BE OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

24 VAC

INPUT

E-BUS

EXPANSION

E-BUS

EXPANSION

Figure 16: OE275-03-A – Suction Pressure Transducer Kit Wiring

30

Revised 1/23/13

VCB-X Controller Field Technical Guide