Greenheck Microprocessor Controller, pCOe, c.pCOe Reference Manual

Document 483586

Microprocessor Controller for

Dedicated Outdoor Air System

Reference Guide for Microprocessor Controller

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with these instructions will result in voiding of the product warranty and may result in personal injury and/or property damage.

DOAS v3.001

Introduction

Program Features

The microprocessor controller offers control through easy monitoring and adjustment of unit parameters by way of a lighted graphical display and an integral pushbutton keypad.

Pre-Programmed Operating Sequences

The controller has been pre-programmed to offer multiple control sequences to provide tempered air. Factory default settings allow for easy setup and commissioning. The sequence parameters are fully adjustable. Refer to the Sequence of Operation for details.

BMS Communication

The user can remotely adjust setpoints, view unit status points and alarms. The microprocessor controller is capable of communicating over several protocols:

• BACnet® MSTP • Modbus RTU

• BACnet® IP • Modbus TCP

• LonWorks®

Reference Points List for a complete list of BMS points.

Internal Time Clock (Schedule)

The controller has an internal programmable time clock, allowing the user to set occupancy schedules for each day of the week. The controller option also has morning warm-up and cool down capability for improved comfort at the time of occupancy.

Alarm Management

The microprocessor controller will monitor the unit’s status for alarm conditions. Upon detecting an alarm, the controller will record the alarm description, time,

DOAS Technical Support

Call 1-866-478-2574

date, and input/output status points for user review. A digital output is reserved for remote alarm indication. Alarms are also communicated via BMS (if equipped).

Occupancy Modes

The microprocessor controller offers three modes of determining occupancy: a digital input, the internal time clock or the BMS. If in the unoccupied mode, the unit will either be shut down, continue normal operation utilizing adjustable unoccupied setpoints, recirculate with unoccupied setpoints or will cycle on to maintain adjustable unoccupied room temperature and humidity setpoints (room temperature and humidity sensor is optional).

Remote Display Panel (if equipped)

A touch pad display panel allows for remote monitoring and adjustment of parameters, allowing ease of control access without going outdoors.

WARNING

Electrical shock hazard. Can cause personal injury or equipment damage. Service must be performed only by personnel that are knowledgeable in the operation of the equipment being controlled.

WARNING

Mechanical high static protection cutoffs must be installed by others to protect the system and equipment from over-pressurization when using factory provided control sensors. The manufacturer does not assume responsibility for this.

Microprocessor Controller for DOAS 1

Table of Contents

Sequence of Operation

General Operation . . . . . . . . . . . . . . . . 3-4

Setpoint Control (Occupied) . . . . . . . . . . . . 4

Setpoint Control (Unoccupied). . . . . . . . . . . 4

Heating . . . . . . . . . . . . . . . . . . . . . . . 4

Cooling . . . . . . . . . . . . . . . . . . . . . . . 4

Economizer. . . . . . . . . . . . . . . . . . . . . 5

Dehumidification . . . . . . . . . . . . . . . . . . 5

Reheat . . . . . . . . . . . . . . . . . . . . . . . 5

Supply Fan VFD Sequence. . . . . . . . . . . . . 5

Exhaust Fan VFD Sequence . . . . . . . . . . . . 5

OA and Recirc Air Damper Control. . . . . . . . . 6

Energy Recovery Wheel . . . . . . . . . . . . . . 6

Alarms . . . . . . . . . . . . . . . . . . . . . . . 7

Controller Overviews

Large Controller . . . . . . . . . . . . . . . . . . 8

Medium Controller . . . . . . . . . . . . . . . . . 9

c.pCOe - Expansion Board Overview, Medium . . 10

pCOe - 4:1 Furnace. . . . . . . . . . . . . . . . .11

pCOe - High Turndown Furnace . . . . . . . . . . 11

Display Use . . . . . . . . . . . . . . . . . . . . .12

Example of Parameter Adjustment . . . . . . . .12

Example of Web User Interface . . . . . . . . . .13

Main Menu . . . . . . . . . . . . . . . . . . . . . 14

Unit Status Overview. . . . . . . . . . . . . . 15-17

Unit Enable . . . . . . . . . . . . . . . . . . . . . 18

Menus

Control Variables

Temp Control . . . . . . . . . . . . . . . . 18-20

Dehumidification . . . . . . . . . . . . . . 20-21

Refrigeration. . . . . . . . . . . . . . . . . . .22

Damper Control . . . . . . . . . . . . . . . 22-23

Energy Recovery . . . . . . . . . . . . . . . . 24

Fan Control

Supply Fans Control . . . . . . . . . . . . . 25

Exhaust Fans Control. . . . . . . . . . . . .26

Occupancy . . . . . . . . . . . . . . . . . . . 27

Advanced

Manual Overrides. . . . . . . . . . . . .28-30

Network Settings . . . . . . . . . . . . . 30-31

Backup/Restore . . . . . . . . . . . . . 32-33

I/O Configuration . . . . . . . . . . . . . . .34

Unit Configuration . . . . . . . . . . . . . .34

Alarms . . . . . . . . . . . . . . . . . . . . . . 35

IG Furnace Alarm Descriptions . . . . . . . . . . 35

Appendix

Remote Display . . . . . . . . . . . . . . . . . .36

Carel

NTC Temp Sensor Chart . . . . . . . . 36

I/O Expansion Board Quick Start . . . . . . . . .37

Room Thermostat Quick Start. . . . . . . . .38-39

GreenTrol

Airflow Monitoring Quick Start . . . . 40

Points List . . . . . . . . . . . . . . . . . . . 41-52

Modbus Connections . . . . . . . . . . . . . . . 53

Maintenance Log . . . . . . . . . . . . . . . .53-54

Our Commitment . . . . . . . . . . . . . Backcover

Microprocessor Controller for DOAS2

Sequence of Operation

The microprocessor controller can be configured for air handler, energy recovery, and dedicated outdoor air systems. Each application utilizes similar technologies for heating and cooling: chilled water, hot water, indirect gas, electric heat, packaged DX cooling, and packaged DX cooling with digital and inverter scrolls. All setpoints, lockouts and delays are user adjustable via the integral keypad display, remote display, or web user interface.

General Operation

UNIT START COMMAND: The microprocessor

controller requires a digital input to enable operation. The unit can then be commanded on or off by this digital input, keypad, the BMS or internal time clock. When a start command becomes active the following steps occur:

• Energy recovery wheel starts, if equipped

• Factory mounted and wired dampers are powered (Outdoor air, exhaust air, and recirculation air dampers, if equipped)

• Exhaust fan, if equipped, starts after adjustable delay

• Supply fan starts after adjustable delay

• Tempering operation starts after adjustable delay

UNIT STOP COMMAND: A shutdown occurs when there is not an occupied or unoccupied start command. The following shutdown methods can occur.

Hard shutdown occurs under the following conditions:

• A user or the BMS disables the system, and the supply temperature is less than the soft shutdown enable setpoint.

• Occupancy is commanded to unoccupied while there is no unoccupied start command, and the supply temperature is less than the soft shutdown enable setpoint.

When a hard shutdown occurs:

• The unit shuts down immediately.

• Dampers spring-return to their off position.

Soft shutdown occurs under the following conditions:

• A user or the BMS disables the system, and the supply temperature is greater than or equal to the soft shutdown enable setpoint.

• There is no unoccupied or occupied start command and the supply temperature is greater than or equal to the soft shutdown enable setpoint.

The following occurs during a soft shutdown:

• Tempering outputs immediately revert back to their off value; while

• Dampers remain open and fans continue to run; until

– The supply air temperature falls below the soft

shutdown enable setpoint minus 5.0°F; or

– The soft shutdown delay timer has expired.

UNIT/SYSTEM DISABLED COMMAND:

The unit becomes disabled due to the following:

• The unit was disabled from the controller’s Unit Enable screen.

• The unit was disabled from the BMS.

• The shutdown input is in the shutdown position.

• A shutdown alarm was activated.

When disabled the following actions occur:

• The unit shuts down immediately; and

• Dampers spring-return to their off position.

OCCUPIED/UNOCCUPIED MODES: The microprocessor controller offers three modes of determining occupancy: digital input, the internal time clock or the BMS. When in the unoccupied mode, the unit can be configured to shut down, or cycle on to maintain the unoccupied room setpoints. The unit can be temporarily overridden to the occupied mode via a digital input, keypad display, or room thermostat, if equipped.

The controller can be configured with morning warmup and cool down to bring the space to the occupied setpoint prior to occupancy.

• Occupied Mode:

- Exhaust fan on, if equipped

- Supply fan on

- Heating (refer to Heating section)

- Cooling (refer to Cooling section)

- Energy Recovery Wheel Control (refer to

Energy Recovery Wheel section), if equipped

- Damper Control (refer to Outdoor Air and

Recirculated Air section), if equipped

• Unoccupied Mode (Unit Off): Unit remains off when in unoccupied mode.

• Normal Operation with Unoccupied Setpoints:

Optional unoccupied mode will operate as if in occupied mode but will utilize adjustable unoccupied setpoints.

- Exhaust fan on, if equipped

- Supply fan on

- Heating (refer to Heating section)

- Cooling (refer to Cooling section)

- Energy Recovery Wheel Control (refer to Energy

Recovery Wheel section), if equipped

- Damper Control (refer to Outdoor Air and

Recirculated Air section), if equipped

• Recirculation with Unoccupied Setpoints: Optional unoccupied mode when there is an unoccupied recirculation damper. The unit will continue to run, but in full recirculation.

- Supply fan on

- Recirculation air damper open

- OA damper closed

- Tempering operations begin

Microprocessor Controller for DOAS 3

Sequence of Operation

• Unoccupied Mode (Cycle on Room): Optional unoccupied mode when there is an unoccupied recirculation damper and room temperature and/ or humidity sensor(s) connected to the controller. The unit will cycle on to maintain unoccupied room setpoints if there is a call for unoccupied heating, cooling or dehumidification.

- Exhaust fan off, if equipped

- Supply fan on

- Recirculation air damper open

- OA damper closed

- Tempering operations begin

Setpoint Control (Occupied)

Supply air temperature setpoint can be configured as constant, or can be reset by either outside air temperature, or room temperature setpoint. If equipped with BMS communications, the user can also directly command the supply temperature setpoint, or room temperature setpoint, if equipped.

• Outdoor Air Temperature Reset Function: The controller will default to supply temperature reset based on outdoor air temperature. The controller will monitor the OA temperature and reset the supply temperature setpoint based upon the outdoor air reset function.

• Room Temperature Reset (optional): With a room temperature sensor, the controller will adjust the supply air temperature setpoint between the minimum (55°F) and maximum (90°F), to satisfy the desired room temperature. Room temperature setpoint can be adjusted locally at the microprocessor by BMS or room thermostat, if equipped.

Setpoint Control (Unoccupied)

When equipped with an unoccupied recirculation damper and optional room temperature and/or humidity sensors, the unit will cycle on to maintain the unoccupied room setpoints.

• Unoccupied Heating: If equipped with heating, the unit is enabled when the room temperature is less than the unoccupied heating setpoint minus differential (60°F). The supply air temperature setpoint will be set to the supply maximum reset limit (90°F). The unit cycles off when the room temperature reaches the unoccupied heating setpoint.

• Unoccupied Cooling: If equipped with cooling, the unit is enabled when the room temperature is greater than the unoccupied cooling setpoint plus differential (80°F+5°F). The supply air temperature setpoint will be set to the supply minimum reset limit (55°F). The unit cycles off when the room temperature reaches the unoccupied cooling setpoint.

• Unoccupied Dehumidification: If equipped with cooling, the unit is enabled when the room relative humidity exceeds the unoccupied room relative humidity setpoint plus differential (50%+5%). The supply air temperature setpoint will be set to the equivalent occupied supply setpoint.

• Morning Warm-Up/Cool Down: The unit uses adjustable preset time to temper the space to occupied setpoint prior to occupancy (room temperature sensor is optional).

Heating

The heating is controlled to maintain the supply temperature setpoint. The heating will be locked out when the outside air temperature is above the heating lockout (80°F adj).

• Indirect Gas Furnace: Microprocessor controller will modulate the indirect gas furnace to maintain the supply temperature setpoint.

• Hot Water Coil: Microprocessor controller will modulate a hot water valve (provided by others) to maintain the supply temperature setpoint. Coil freeze

protection must be provided by others in the field!

• Electric Heater: Microprocessor controller will modulate an electric heater to maintain the supply temperature setpoint.

Cooling

The cooling is controlled to maintain the supply temperature setpoint. The mechanical cooling will be locked out when the outside air temperature is below the cooling lockout (55°F).

• Chilled Water: Microprocessor controller will modulate a chilled water valve (provided by others) to maintain supply air setpoint. Coil freeze protection

must be provided by others in the field!

• Packaged/Split DX Cooling (Standard Scroll): Microprocessor controller will enable stages of cooling to maintain the supply air setpoint.

• Packaged DX Cooling (Digital Scroll): Microprocessor controller will modulate the digital scroll to maintain the supply air temperature setpoint.

• Packaged DX Cooling (Inverter Scroll): Microprocessor controller will modulate the inverter scroll to maintain the supply air temperature setpoint.

Microprocessor Controller for DOAS4

Sequence of Operation

Economizer

If the application requires cooling, and the outdoor air conditions are suitable for free cooling, the controller may enter the economizer state. If the unit is economizing and the discharge temperature setpoint is not being met, the controller may bring on mechanical cooling. If equipped with a modulating outdoor air and recirculated air damper, the dampers will modulate between the minimum OA and maximum positions to maintain the supply temperature setpoint. If equipped with an energy wheel, Reference Energy Recovery Wheel Sequence.

• Temperature: The economizer will be locked out when:

- The outside air is greater than the economizer

high lockout (65°F).

- The unit is operating in dehumidification mode.

- There is a call for heating.

• Temperature/Enthalpy: The economizer will be locked out when:

- The outside air is greater than the economizer

high lockout (65°F dry-bulb).

- The outside air is greater than the economizer

high enthalpy lockout (23 btu/lb).

- The unit is operating in dehumidification mode.

- There is a call for heating.

Dehumidification

The cooling is controlled to maintain the cold coil setpoint. The dehumidification sequence will be locked out when the OA is less than the dehumidification lockout (10°F) above the cold coil setpoint. If equipped with BMS communications, the user can also directly set the cold coil leaving air setpoint.

• Optional Room Relative Humidity Sensor or Thermostat: The controller will adjust the cold coil leaving air temperature setpoint between the minimum (50°F) and maximum (55°F) setpoint to satisfy the desired room relative humidity setpoint.

Reheat

While the unit is in dehumidification mode, the supply air can be reheated via Primary Heating Source, On/Off Hot Gas Reheat or Modulating Hot Gas Reheat.

• Modulating Hot Gas Reheat (valve): The microprocessor controller will modulate the hot gas reheat valve to maintain the supply temperature setpoint.

• Reheat Plus: The primary heat source configured to act as secondary reheat.

Supply Fan VFD Sequence

The factory installed VFD is wired to the controller. Supply fan speed needs to be set during test and balance of the unit. If equipped with BMS communications, the user can also directly command the supply fan speed.

• Optional Space/Duct CO

Sensor: The controller

will modulate the supply fan based upon a comparison of the CO2 setpoint to the actual CO2 levels reported from the sensor.

• Optional Duct Static Pressure Sensor: The controller will modulate the supply fan based upon a comparison of the duct static pressure setpoint to the actual duct static pressure level reported from the sensor.

• Optional Building Static Pressure Sensor: The controller will modulate the supply fan based upon a comparison of the building static pressure setpoint to the actual building static pressure level reported from the sensor.

• Optional Single Zone VAV (SZ): The controller will control the supply air temperature and supply fan speed to maintain the room temperature setpoint. This sequence requires a room temperature sensor. Heating - When the room requires heating, the controller will reset the supply air temperature setpoint up to the maximum (90°F) while increasing the supply fan speed up to its maximum heating speed. Cooling - When the room requires cooling, the controller will first reset the supply air temperature setpoint down to the minimum (55°F) while the supply fan remains at the minimum cooling speed. After a time delay, the supply fan speed will increase up to its maximum cooling speed to maintain the room temperature setpoint.

Exhaust Fan VFD Sequence

The factory installed VFD is wired to the controller. Exhaust fan speed needs to be set during test and balance of the unit. If equipped with BMS communications, the user can also directly command the exhaust fan speed.

• Optional Building Static Pressure Sensor: The controller will modulate the exhaust fan based upon a comparison of the building static pressure setpoint to the actual building static pressure level reported from the sensor.

• Optional Supply Fan Tracking: The controller will proportionally modulate the exhaust fan based upon the supply fan speed.

• Optional Outdoor Air Damper Tracking: The controller will proportionally modulate the exhaust fan based upon the outdoor air damper position.

Microprocessor Controller for DOAS 5

Sequence of Operation

Outdoor Air and Recirculated (Recirc) Air Damper Control

If equipped with a modulating outdoor air and recirculated air damper, the recirculated air damper will operate inverse of the outdoor air damper. The outdoor air damper will open to a Minimum Outdoor Air Position (Min OA) when in occupied mode. If the controller is configured to modulate the supply fan speed, the minimum and maximum OA positions can be reset based on supply fan speed. If equipped with BMS communications, the user can also directly reset the damper position up to the maximum OA position.

• Optional Space CO proportionally modulate the OA/RA dampers based upon a comparison of the CO CO2 level reported from the sensor. As the CO2 level rises, the controller will proportionally modulate the outdoor air damper open, between the minimum OA damper position and maximum CO

• Optional Building Pressure: The OA/RA dampers will modulate based upon the signal from a building static pressure sensor. The controller will modulate the dampers, between the minimum and maximum OA positions, based upon a comparison of the building static pressure setpoint to the actual building static pressure level reported from the sensor.

Sensor: The controller will

setpoint to the actual

position.

Energy Recovery Wheel Sequences

Economizer (optional): If the unit is equipped with an

energy recovery wheel, the economizer will modulate/ stop the energy wheel to achieve free cooling. Jog wheel control is available during stop wheel economizer operation. This sequence allows the wheel to rotate for a short period of time exposing a new section to the air stream.

• Stop Wheel: When economizer mode is enabled and there is a signal for cooling, the wheel will stop rotating to allow free cooling.

• Modulate Wheel: When economizer mode is enabled and there is a signal for cooling, the controller modulates wheel speed to maintain the supply temperature setpoint.

• Energy Wheel Bypass Dampers, if equipped: During normal operation, the dampers shall remain closed to allow full operation of the energy wheel. During economizer sequences, the dampers will be open to bypass the energy wheel.

Frost Control (optional): The microprocessor controller will activate the frost control method when the outdoor air temperature is less than the defrost setpoint (5°F) and the wheel pressure switch is closed due to a high wheel pressure drop. Once the pressure drop decreases below the pressure switch point or the outdoor air temperature increases, the unit will resume normal operation.

• Electric Preheater: When frosting is occurring, the preheater is energized to defrost the wheel.

• Modulate Wheel: When frosting is occurring, the wheel slows to allow defrosting to occur.

• Cycle Wheel: When frosting is occurring, the energy wheel is cycled off for a defrost cycle time (5 minutes). After the defrost cycle time, the wheel is re-energized to continue normal operation. The controller will not allow another defrost cycle for a minimum normal operating cycle time (30 minutes).

• Timed Exhaust: When frosting is occurring, the supply fan is cycled off along with the tempering for a defrost cycle time (5 minutes). The exhaust fan will continue to run allowing the warm exhaust air to defrost the wheel. After the defrost cycle time, the supply fan and tempering are re-energized to continue normal operation. The controller will not allow another defrost cycle for a minimum normal operating cycle time (30 minutes).

Microprocessor Controller for DOAS6

Sequence of Operation

Alarms

The microprocessor controller includes a digital output for remote indication of an alarm condition, which connects via the J15 port. Possible alarms include:

• Dirty Filter Alarm: If the outside air or return air filter differential pressure rises above the differential pressure switch setpoint, the microprocessor controller will activate an alarm.

• Supply and Exhaust Air Proving Alarm: Microprocessor controller monitors proving switch on each blower and displays an alarm in case of blower failure.

• Sensor Alarm: Microprocessor controller will send an alarm if a failed sensor is detected (temperature, pressure, relative humidity).

• Supply Air Low Limit: If the supply air temperature drops below the supply air low limit (35°F), the microprocessor controller will de-energize the unit and activate the alarm output after a preset time delay (300s).

• Other Alarms: Wheel Rotation, High Wheel Pressure, High/Low Refrigerant Pressure.

Microprocessor Controller for DOAS 7

Large Controller Overview

24VAC to Controller

Room RH

CO2 Sensor

After Cold Coil Temperature Sensor

Sensor B1, B2, B3 Commons

Supply Discharge Temperature Sensor

Outdoor Air Temperature Sensor

24VAC for Analog Outputs

Outdoor Air Damper Analog Output

Heating Analog Output

Cooling/VSC Cond Fan Analog Output

Hot Gas Reheat Analog Output

Supply Fan Proving

Wheel Pressure Limit

Wheel Rotation Alarm

Unit On/Off Input

Exhaust Fan Proving

Occupied/Unoccupied Input

Dirty Filter Input

Outdoor Relative Humidity Sensor

Building Pressure Sensor

Duct Pressure Sensor

Compressor Limit Circuit A

Compressor Limit Circuit B

Compressor Limit Circuit C

Compressor Limit Circuit D

Supply Fan VFD Output

Exhaust Fan VFD Output

Room Temperature Sensor

Discharge Pressure Circuit B (VSC)

2 Speed Fan Input

2 Position Damper Input

+Vter m

GND

+5 V

GND

+VDC

GND

VG0

ID1

ID2

ID3

ID4

ID5

ID6

ID7

ID8

IDC1

GND

ID9

ID10

ID11

ID12

IDC9

ID13H

ID13

IDC13

ID14

ID14H

J10

J11 pLAN

J24 J2 J3

REF

Optional BACnet IP, Modbus TCP, Web UI, Ethernet Connections

J12

NO1

J25

J4 J5 J7

BMS2

J26

drac SMBdrac suBdleiF

ID15H

ID15

J19

IDC15

ID16

ID16H

J20

GND

U10

GND

ID17

ID18

IDC17

FBus2

4321

NO14

J21

NC14

NO15

NC15

NO16

J22

NO17

NO18

J23 FBus2

NO2

NO3

J13

NO4

NO5

NO6

J14

NO7

C14

NO8

J15

NC8

C15

J16

NO9

C16

NO10

NO11

C16

NO12

J17

C12

NC12

NO13

J18

C13

NC13

24 VAC When Unit On

Wheel Frost Mode

Supply Fan Enable

Exhaust Fan Enable

24 VAC from Supply Fan Proving

Heating Enable

Staged Compressor 1

Staged Compressor 2

24 VAC

Economizer Mode/Output to Dampers

Alarm Dry Contact

Staged Compressor 3

Staged Compressor 4

Energy Recovery Wheel Enable

Inverter Compressor E-Stop (VSC)

Remote Display

• Six conductor RJ25 cable

• Connects to J10

Compressor Fan 1 Enable (VSC)

Compressor Fan 2 Enable (VSC)

Optional LonWorks cards are

located in BMS Card port.

Microprocessor Controller for DOAS8

Optional Modbus RTU/BACnet MSTP connections are made to the J26 FBus2 terminal.

Medium Controller Overview

24VAC to Controller

Refrigerant Pressure Circuit A

Refrigerant Pressure Circuit B

Supply Discharge Air Temperature

Sensor B1, B2, B3 Commons

After Cold Coil Temperature Sensor

Outdoor Air Temperature Sensor

24VAC for Analog Outputs

Cooling Analog Output

Condenser Fan Circuit A or Heating Analog Output

Hot Gas Reheat Analog Output

Condenser Fan Circuit B or Heating Analog Output

Supply Fan Proving

High Pressure Switch Circuit A

Low Pressure Switch Circuit A

Occupied/Unoccupied Input

OA/RA Damper End Switch

Unit On/Off Input

High Pressure Switch Circuit B

Low Pressure Switch Circuit B

Outdoor Relative Humidity Sensor

Outdoor Air Damper Output

Supply Fan VFD Output

Exhaust Fan Proving

Dirty Filter Input

Wheel Rotation Alarm

Freeze Stat Input

Condensate Drain Pan Switch

Remote Start Input

+Vterm

GND

+5 V

GND

+VDC

GND

VG0

ID1

ID2

ID3

ID4

ID5

ID6

ID7

ID8

IDC1

GND

ID9

ID10

ID11

ID12

IDC9

ID13H

ID13

IDC13

ID14

ID14H

J10

J11 pLAN

J24 J2 J3

REF

Remote Display

• Six conductor RJ25 cable

• Connects to J10

Optional BACnet IP, Modbus TCP, Web UI, Ethernet Connections

J12

NO1

J25

J4 J5 J7

drac SMBdrac suBdleiF

ID15H

ID15

J19

IDC15

ID16

ID16H

J20

GND

U10

GND

ID17

ID18

IDC17

BMS2

J26 FBus2

NO14

J21

NC14

NO15

NC15

NO16

J22

NO17

NO18

J23 FBus2

NO2

NO3

J13

NO4

NO5

NO6

J14

J16

J17

J15

J18

NO7

NO8

NC8

NO9

NO10

NO11

NO12

C12

NC12

NO13

C13

NC13

4321

C14

C15

C16

24 VAC When Unit On

Stagged Compressor 1

Stagged Compressor 2

Stagged Compressor 3

24 VAC from Supply Fan Proving

Stagged Compressor 4

24 VAC

Economizer Mode/Output to Dampers

Alarm Dry Contact

Condenser Fan VFD Start

Condenser Fan Stage 2 Start

Condenser Fan Stage 3 Start

Inverter Compressor E-Stop (VSC)

Optional LonWorks cards are

located in BMS Card port.

Optional Modbus RTU/BACnet MSTP connections are made to the J26 FBus2 terminal.

Microprocessor Controller for DOAS 9

c.pCOe - Expansion Board Overview, Medium Controller Arrangement

24 VAC Power

Heating Output

Exhaust Fan VFD Output

Energy Recovery Output

Space Temperature

Mixed Air Temperature

Exhaust Air Temperature

Space Static Pressure

Supply Air Duct Static Pressure

Space Setpoint Adjustment

Address Ext. ProtBaud

OFF

38.4 K

57.6 K

CAREL

Modbus

9.6 K

Address Ext Baud Prot

1234567

9101112131415

19.2 K

Wheel Enable

Furnace Heating Stage 1

Furnace Heating Stage 2

Preheater Enable

The expansion board is an I/O module than can be used to monitor additional statuses or provide commands from medium board controller.

Microprocessor Controller for DOAS10

pCOe - 4:1 Furnace Overview

High Speed Pressure Switch

24 VAC to Controller

Main Gas Valve

Ignition Controller Alarm

Low Speed Pressure Switch

24 VAC for Analog Outputs

Modulating Gas Valve

Modbus Connection

Ignition Controller 24 VAC

High Speed Fan 24 VAC

Modbus Address Switches

pCOe - High Turndown Furnace

24 VAC to Controller

Main Gas Valve - Small Manifold

Main Gas Valve - Large Manifold

Ignition Controller Alarm

24 VAC for Analog Outputs

Modulating Gas Valve

Modbus Connection

Low Speed Pressure Switch

Modbus Address Switches

High Speed Pressure Switch

Ignition Controller - Small Manifold 24 VAC

High Speed Fan 24 VAC

Ignition Controller - Large Manifold 24 VAC

Microprocessor Controller for DOAS 11

Display Use

The microprocessor controller is located in the unit control center. The face of the controller has six buttons, allowing the user to view unit conditions and alter parameters. The microprocessor controller is pre-programmed with easy to use menus. A remote display is also available, which connects via the J10 port. A six wire patch cable is needed.

Keypad Description

Button Description Functions

Main Menu Press to go directly to the Main Menu from any screen.

From the Main Menu, navigate to the following screens:

• Unit Enable

• Unit Status

• Ctrl Variables

• Alarm Menu

Alarm The Alarm button ﬂashes when there is an active alarm.

Press to view active alarms. Press twice to go to the alarms reset screen.

Escape Press from the Main Menu to view the Unit Status screen.

Press to go back one menu level. Press when editing a variable to cancel editing.

Up Press to navigate through the menus/screens.

Press after entering a variable to increase a current value.

Enter Press to enter a highlighted menu or screen item.

Press to enter a writable variable and press again to conﬁrm the new variable value.

Down Press to navigate menus/screens.

Press after entering a variable to decrease the current value.

Virtual keypad/display on web interface only. These two buttons on the virtual keypad/display are used to simulate two-button actions on the handheld keypad/display.

To simulate pressing two buttons simultaneously:

1. Click on 2-Button Click.

2. Then, sequentially click on two keypad buttons (Main, Alarm, Escape, Up, Enter, Down).

To simulate pressing and holding two buttons simultaneously:

1. Click on 2-Button Hold.

2. Then, sequentially click on two keypad buttons (Main, Alarm, Escape, Up, Enter, Down).

Supply air low limit

Alarm when supply is below: 35.0º F

Alarm delay: 300s

Supply air low limit

Alarm when supply is below: 32.0º F

Alarm delay: 300s

Example of Parameter Adjustment

The cursor always begins in the upper left corner of the display and will be blinking. Press the button to move the cursor down for parameter adjustment.

Once the cursor has reached the desired parameter, press the adjust the value.

buttons to

Supply air low limit

Alarm when supply is below: 32.0º F

Alarm delay: 300s

Microprocessor Controller for DOAS12

When satisfied with the adjustment, press the button to save the parameter. When finished, make certain the cursor is in the upper left corner. If the cursor is not in the upper left corner, the changes will not be saved. The cursor must be in the upper left corner to enable screen advancement.

Web User Interface

The Web User Interface allows access to the unit controller through the building network. Reference Cntrl Variables/ Advanced/Network Settings to set the IP network protocol. Once proper communication is established, the user can click on the follow tabs:

Overview – Includes a functioning unit graphic, monitoring points, and active setpoint adjustment.

Alarm – Shows current and cleared alarms.

Unit Display – Mimics the unit controller display. Allows the user full access to the controller without physically

being at the unit.

Trending – User can view past and present controller points.

Information – Provides manufacturer support information as well as IOM resources.

Service – User must be logged with service access criteria (9998). Once proper login is established, the user can

view configured input/output points associated with the unit controller

Microprocessor Controller for DOAS 13

Main Menu Navigation

Unit Enable

Main Status Ctrl Variables Alarm Menu

Unit Status

Input Output Status

Note: Additional status screens are displayed depending on unit conﬁguration. Screens may include, but are not limited to:

Occupancy Damper positions Fan status Airﬂow Setpoints Economizer Energy recover y Cooling Circuit pressure Heating Dehumidiﬁcation Static pressure

Temp Control

Dehumidiﬁcation

Refrigeration Compressor Control

Pressure Control

Damper Control

Energy Recovery

Fan Control Supply Fan Control

Exhaust Fan Control

Occupancy

Advanced

Note: The Advanced menu is readonly. The service password is required to change these settings. Reference the Advanced menu section for more information.

*Consult factory for more information.

Manual Overrides

Adv. Setpoints*

Network Settings

Backup/Restore

IO Status/Offset*

IO Conﬁg

Unit Conﬁg

Unit Settings*

Active Alarms

Reset Alarms

Alarm History

Clear History

Export History

Service Info*

Alarm

Management

Shutdown

Alarms

General

Alarms

Microprocessor Controller for DOAS14

Unit Status Overview

The microprocessor controller will revert to a default main menu loop. This loop includes several screens to view the operating conditions of the unit. Scroll through the menu screens by using the

THE INITIAL MENU SCREEN DISPLAYS THE JOB NAME, UNIT TAG , UNIT STATUS, OUTSIDE

AIR CONDITIONS, SPACE CONDITIONS AND SETPOINTS.

Possible modes include:

• Off/Standby

• Unoccupied Start

• Dampers Open

• Fan Start Delay

• Fans Starting

• Startup Delay

• System On

• Soft Shutdown

• System Disabled

• Remote Off

Unit Status Screen Symbols

Symbol Indicates

Supply air fan status. Rotation indicates airflow; static blades indicate no airflow.

Cooling

Heating

• Shutdown Alarm

• Fans Only

• Economizing

• Cooling

• Dehumidifying

• Heating

• HGRH Purging

• Defrost Active

• Overrides Active

• Expansion Offline

buttons.

Dehumidifying

Economizing

Defrost

INPUT OUTPUT STATUS

Displays real time conditions from sensors located in the unit and building space if equipped with space mounted sensors. Controller output conditions can also be viewed from this screen. To view the desired input/output point, the user must select the desired channel. Reference the Controller Overview section in this IOM for individual point locations.

OCCUPANCY STATU S

Displays current status of occupancy and the configured occupancy control method and time zone.

DAMPER COMMANDED POS

This screen appears if equipped with modulating outdoor air and recirculated air dampers. Displays current position of the outdoor air damper. Recirculating air damper position is the inverse of outside damper position.

SUPPLY FAN STATUS

This screen displays the fan enable command, fan proving status, and the supply fan ramp being sent from the controller to the VFD. The minimum and maximum speeds are set in the VFD (Reference unit Installation and Operation Manual for VFD programming). The controller can modulate the fan between the min and max speeds via an analog output.

Microprocessor Controller for DOAS 15

Unit Status Overview

EXHAUST FAN STATU S

This screen displays the fan enable command, fan proving status, and the exhaust fan ramp being sent from the controller to the VFD. The minimum and maximum speeds are set in the VFD (Reference unit Installation and Operation Manual for VFD programming). The controller can modulate the fan between the min and max speeds via an analog output.

AIRFLOW STATUS

This screen displays the current status of airflow volumes if the unit is provided with airflow monitoring.

AMBIENT LOCKOUT STATUS

Displays heating and cooling lockout status based on the outside air ambient temperature. Ambient lockouts for heating and cooling can be altered by entering Main Menu/Ctrl Variables/Temp Control/Cooling or Heating.

OUTSIDE RESET

This screen will be active if the controller is configured for outside air reset. The heating and cooling devices modulate to maintain the supply air temperature setpoint as determined by the outside reset calculation.

ACTIVE RESET

This screen will be active if temperature control mode is set for space or return air reset. The supply temperature setpoint is calculated based on the active setpoint and the current space or return temperature. The calculated setpoint is scaled between the supply temperature minimum and maximum setpoints determined by the current mode of operation.

SUPPLY SETPOINT

Displays current supply temperature and supply temperature setpoint to be achieved.

ECONOMIZER RAMP

The economizer ramp screen will be active if the unit is configured for an economizer control method. This screen displays the economizer setpoint, supply air discharge temperature, economizer ramp status, and economizer control mode of control. Economizer control mode options include, outside dry bulb, outside enthalpy, comparative dry bulb, and comparative enthalpy.

CO2 RAMP OUTPUT

The CO2 Ramp Output screen will be active if the unit is configured for CO

control. This screen displays the CO2 setpoint, CO2 level from the space, and the status of the control ramp.

ENERGY RECOVERY WHEEL STATUS

This screen provides overall status of the energy recovery wheel.

Microprocessor Controller for DOAS16

Unit Status Overview

DEFROST RAMP OUTPUT

This screen only appears if the unit has an energy recovery wheel and a frost control method was provided on the unit.

Upon sensing a high differential pressure across the energy wheel, the unit will go into defrost if the outside air temperature is below the defrost temperature setpoint.

COOLING RAMP

This screen displays the active setpoint, supply discharge temperature, cooling enable/disable, cooling ramp being sent from the controller, and the overall capacity being demanded.

COMPRESSOR REQUEST

The compressor request screen will be active if the unit is equipped with DX cooling. Screen displays overall status of individual compressor operation being sent from the unit controller. Example: Circuit A compressor enable (On) with modulating value of 26%.

HEATING RAMP

This screen displays the active setpoint, supply air temperature, heating enable/ disable, and heating ramp being sent from the controller.

DEHUMIDIFICATION

This screen will display the overall dehumidification status and selected mode of dehumidification control.

The following dehumidification modes are available when the space is in occupied mode:

• Cold coil setpoint plus offset (10ºF)

• Inside RH*

• Inside dew point*

• Outside dew point

• Inside RH or inside dew point*

• Inside RH or inside dew point or outside dew point

• Inside RH and inside dew point*

• Inside RH and inside dew point or outside dew point *Available during unoccupied mode.

HGRH RAMP OUTPUT

This screen will display overall hot gas reheat status which includes active setpoint, supply air discharge temperature, hot gas reheat enable/disable, and hot gas reheat control loop being sent from the controller.

SUPPLY SPACE STATIC

This screen displays status points if the unit is configured for space static pressure control. Status points include controller output ramp, static pressure in the space, and the space static pressure setpoint. Similar status screen will appear for the exhaust fan if the unit is configured for exhaust fan space static control.

SUPPLY/RETURN DUCT STATIC

This screen displays status points if the unit is configured for duct static pressure control. Status points include controller output ramp, static pressure in the duct, and the duct static pressure setpoint. Similar status screen will appear for the exhaust fan if the unit is configured for exhaust fan duct static control.

Microprocessor Controller for DOAS 17

The controller is equipped with several menus to help guide users with altering program parameters. The following menus can be accessed by pressing the

button. To enter the desired menu, press the button.

Unit Enable

Control Variables

Temp Control

The Unit Enable menu allows the user to enable and disable the unit through the controller. Reference sequence of operation for additional unit starts/stop details.

The unit ships from the factory in a disabled state. To allow the unit to operate, the controller must receive a run command from digital input ID4. Jumper unit

terminals R - G to allow the unit to operate.

Change to (Enabled/Disabled): Enables user to manually turn unit on/off via

display. Unit terminal G must have 24 VAC power to enable the unit.

The Controls Variables menu allows the user to view and adjust unit control parameters.

The Temperature Control menu allows the user to view and adjust temperature control conditions of the unit.

METHOD FOR TEMPERATURE CONTROL

Possible Setpoint Sources:

Supply Temp Control – The supply discharge setpoint to be a constant value (e.g. 72°F). Reference Temperature Setpoint screen for setpoint adjustment.

Space Reset – The controller will reset the supply air temperature set point to maintain the room temperature set point (requires room temp sensor). Reference the Temperature Setpoint screen for room setpoint adjustment.

Return Reset – The controller will reset the supply air temperature set point to maintain the return air temperature set point (requires duct mounted return air temp sensor). Reference the Temperature Setpoint screen for return air setpoint adjustment.

OA Reset – The controller monitors the outdoor air temperature and adjusts the desired supply temperature set point accordingly. For example, when the outdoor air is below 55°F, the controller will change the supply set point to 70°F. If the outdoor air is above 65°F, the controller will change the supply set point to 55°F. If the outdoor air temperature is between 55°F and 65°F, the supply set point changes according to the outdoor air reset function. A visual representation of the outdoor air reset function is shown below. Reference Outside Setpoints for minimum and maximum outside air limits.

Microprocessor Controller for DOAS18

Outdoor Air Reset Function

75°

70°

65°

60°

55°

50°

Supply Air Set Point (°F)

45°

50° 55° 60° 65° 70°

Outside Air Temperature (°F)

OUTSIDE SETPOINTS

This screen only appears if outside reset is selected as the reset control mode.

TEMPERATURE SETPOINT

This screen only appears if supply temp control, space reset, or return reset is selected as the reset control mode.

Possible Setpoint Sources:

Local – The room set point will be constant; set from screen (e.g. 72°F). BMS – The BMS can directly control the room temperature set point (requires

BMS communication option). T-Stat – The room set point will be adjustable from the room thermostat.

Reference Appendix: Room Thermostat Quick Start for additional information.

HEAT COOL DEADBAND

This screen only appears if space reset or return air reset is selected as the reset control mode. The heat cool deadband allows for separate cooling and heating setpoints when the reset control mode is set for space reset or return air reset.

SUPPLY SETPOINTS

Cooling and heating supply setpoints screens only appear if outdoor reset, space reset, or return air reset is selected. These screens allow the user to set the minimum and maximum setpoint limits for cooling or heating operation. The controller will adjust the supply temperature setpoint between the set limits depending on mode of operation.

MODE SWITCH DISPLAY

This screen displays the delay time required before switching between heating and cooling mode.

STAR TUP DISPLAY

This screen displays the delay time after the fans have started and tempering begins

COOLING LOCKOUT

This screen displays the cooling lockout temperature. Cooling will be disabled when outside air is below the cooling lockout temperature (55ºF).

Microprocessor Controller for DOAS 19

HEATING LOCKOUT

This screen displays the heating lockout temperature. Heating will be disabled when outside air is above the cooling lockout temperature (80ºF).

SPACE SETPOINTS DURING THE UNOCCUPIED MODE

The controller will have separate screens for unoccupied cooling and heating setpoints. Reference Occupied control variables for further detail.

Unoccupied Cooling Example: If setpoint = 80ºF, unoccupied cooling is enabled when room equals 80ºF and above. Unoccupied cooling is disabled when room temperature is below 75ºF.

Unoccupied Heating Example: If setpoint = 60ºF, unoccupied heating is enabled when room temperature equals 60ºF and below. Unoccupied heating is disabled when room temperature is above 65ºF.

Control Variables

Dehumidification

The Dehumidification menu allows the user to view and adjust dehumidification control parameters.

THIS SCREEN DISPLAYS METHOD FOR DEHUMIDIFICATION.

Possible Methods:

• Outside Air Temp is greater than cold coil setpoint plus offset (10ºF)

• Inside RH*

• Inside dew point*

• Outside dew point

• Inside RH or inside dew point*

• Inside RH or inside dew point or outside dew point

• Inside RH and inside dew point*

• Inside RH and inside dew point or outside dew point *Available during unoccupied mode.

There must be a constant call for dehumidification for the duration of the enable delay for dehumidification mode to become enabled. The call remains active until conditions are satisfied and dehumidification mode has been active for the minimum active time. Reference Ctrl Variables/Advanced/Unit Config/Unit Configuration Occupied Dehum Call for dehumidification method options.

THIS SCREEN DISPLAYS METHOD FOR DEHUMIDIFICATION IN UNOCCUPIED MODE.

If the unit is unoccupied while there is a dehumidification call, the unit will start and dehumidify until the unoccupied dehumidification setpoints are satisfied. The above dehumidification modes marked with an * indicate availability during unoccupied mode. The unoccupied dehumidification mode can be set differently than the occupied dehumidification mode. Reference Ctrl Variables/Advanced/ Unit Config/Unit Configuration Unoccupied Dehum Call for dehumidification method options.

Microprocessor Controller for DOAS20

THIS SCREEN DISPLAYS HYSTERESIS FOR ENABLING DEHUMIDIFICATION DURING O

CCUPIED AND UNOCCUPIED CONDITIONS.

%RH for indoor RH control and ºF for indoor dew point control. Example: If indoor RH setpoint = 50%, dehumidification is enabled when indoor RH equals 50% and above. Dehumidification is disabled when indoor RH is below 44%.

THIS SCREEN ALLOWS ADJUSTMENT FOR DELAY AND MINIMUM ON TIME FOR DEHUMIDIFICATION MODE.

Times are in place to prevent short cycling between dehumidification and other control modes.

THIS SCREEN DISPLAYS THE TEMPERATURE SETPOINTS FOR THE COOLING COIL.

This screen only appears if the unit is equipped with cooling. When in dehumidification mode, the controller will maintain the active cold coil set point. The active set point will be determined by the set point source.

Possible Set Point Sources:

Local – The supply set point will be constant; set from screen (e.g. 55°F). BMS – The cold coil leaving air temperature set point can be adjusted over the

BMS via the dehumidification set point (Reference Points List).

THESE SCREENS DISPLAY DEHUMIDIFICATION PRIORITY SELECTIONS.

The following priorities are used to determine what is more important in the unit: temperature over dehumidification or heating over dehumidification. Both priority selections determine when the unit is allowed to dehumidify.

1. Temperature over Dehumidification

Determines when the unit is allowed to dehumidify based on the space/return air temperatures.

a. Temperature - If temperature is set as the priority and the space or return air is over cooled, dehumidification is locked out until the space or return temperature is no longer over cooled.

b. Dehumidification - If the priority is dehumidification and the space or return air is over cooled, the coil offset will be added to the coil leaving setpoint. (Default 0ºF offset).

c. Over Cooled - If space or return reset is enabled, the target is considered over cooled when it is 4°F below setpoint for 5 minutes. It remains over cooled until the target is at setpoint and over cooled has been active for a minimum of 5 minutes.

2. Heating over Dehumidification

Determines when the unit is allowed to dehumidify when heating is active.

a. Heating - If priority is set to heating, the unit locks out dehumidification while heating is active.

b. Dehumidification - If priority is set to dehumidification, the unit is allowed to switch to dehumidification when heating is active.

THIS SCREEN DISPLAYS THE COMPRESSOR DEHUMIDIFICATION FORCE.

In dehumidification mode, the lead compressor will continue to run as long as the dehumidification mode sequence has been enabled in order to prevent compressor cycling and potential reevaporation of moisture. To disable this operation and allow the compressor to cycle in dehumidification mode, uncheck the applicable cooling ramps.

Microprocessor Controller for DOAS 21

Control Variables

Refrigeration

Control Variables

Damper Control

The Refrigeration menu allows the user to view and adjust compressor and condenser settings, if equipped.

REFRIGERATION MENU

Consult factory prior to adjusting parameters in Refrigeration Menu.

The Damper Control menu’s allows the user to adjust damper control setpoints. Economizer setpoint adjust will also be found at this location if the unit is equipped with outside air and recirculation dampers.

THIS SCREEN ALLOWS ADJUSTMENT FOR DELAY TIME BETWEEN DAMPER OPENING

AND FAN OPERATION.

This timer allows the damper to open before the fan start sequence begins. This prevents the fans from having to overcome higher static pressure when the damper(s) are opening.

THIS SCREEN DISPLAYS THE OUTDOOR AIR DAMPER SET POINT AND ONLY APPEARS IF

UNIT IS EQUIPPED WITH A MODULATING OUTDOOR AIR AND RECIRCULATING DAMPE R.

The set point is the proportional percentage of the outdoor air damper being open.

0% = Full recirculation air 100% = Full outdoor air

Minimum Position – When in the occupied mode, the active set point will be equal to a local minimum OA set point, which may be constant or reset by fan speed if equipped with a modulating supply fan. The OA damper set point can then be further adjusted between the minimum and maximum OA settings with sequences such as DCV CO

, Building Pressure and Economizer.

Maximum Position – Each sequence that can adjust the OA damper set point contains a maximum position to prevent excess OA. The active set point will be determined based on the greatest demand of the configured sequences. For example, if a unit is equipped with a DCV CO

and an economizer sequence, the

OA damper set point will react to an economizer demand even if the CO2 set point is satisfied. Likewise, if economizer is not available but CO2 is above set point, the OA damper will open to satisfy the CO

set point.

Economizer – The active set point will be reset based on Economizer demand, between the minimum and maximum positions.

Possible Setpoint Sources:

Local – The minimum outdoor air percentage is constant; set by the controller.

SF Reset – The min and max positions are reset by the supply fan speed.

BMS – The BMS can directly control the OA damper position up to the max BMS

percentage.

Building Pressure – Damper position is reset by a building pressure control loop.

DCV CO

loop based on room CO

– Damper position is reset by a demand-controlled ventilation control

levels.

2 Position – Damper position is reset to “2-Pos/Max Econ:” set point when a contact closure is made. The 2-position damper operation can also be setup to bring the unit into temporary occupied mode until the contact is broken (Max Ventilation Mode - enabled in manufacturer menu settings).

Microprocessor Controller for DOAS22

SCREENS DISPLAY ECONOMIZER CONTROL VARIABLES.

This screen only appears if economizer functionality was provided with a modulating outdoor air damper.

The outside air damper will modulate between the minimum and maximum position to maintain the supply temperature setpoint.

The user can select the economizer control method from the following options:

Outside Dry Bulb – Economizing is allowed when the outside dry bulb is less than the economizer temperature enable setpoint.

Outside Enthalpy - Economizing is allowed when outside enthalpy is less than the economizer enthalpy setpoint.

Comparative Dry Bulb - Economizing is allowed when outside temperature is less than the space or return temperature.

Comparative Enthalpy - Economizing is allowed when outside enthalpy is less than the space or return enthalpy.

THIS SCREEN DISPLAYS THE HYSTERESIS SETTINGS FOR ECONOMIZER CONTROL.

There is a built-in hysteresis that disables economizer above the economizer setpoint.

(Example: If Economizer Outside Dry Bulb = 65°F, economizer operation is disabled above 67°F).

THIS SCREEN DISPLAYS THE ENERGY REDUCTION ONLY CONTROL.

If enabled, the OA damper and recirculation damper will not modulate during economize. Instead, only the energy recovery wheel will be stopped to ensure no energy is transferred from the supply airstream and exhaust airstream.

Microprocessor Controller for DOAS 23

Control Variables

Energy Recovery

The Energy Recovery menu allows the user to adjust energy recovery wheel sequence setpoints.

THIS SCREEN DISPLAYS THE TEMPERATURE AT WHICH THE UNIT WILL ENABLE FROST C

ONTROL MODE IF NECESSARY (FACTORY DEFAULT=5ºF)

This screen only appears if the unit has an energy recovery wheel and a frost control method was provided with the unit.

Upon sensing a high differential pressure across the energy wheel, the unit will enter defrost mode if the outside air temperature is below this temperature setting. Max Active Time and Min Off Time will be available if the frost control method was provided as timed exhaust or cycle wheel.

THIS SCREEN DISPLAYS THE ENERGY RECOVERY WHEEL JOG FUNCTION

This screen display the energy recovery wheel jog function.

This screen only appears if the unit has an energy recovery wheel and stop wheel economizer method for control.

Momentarily enables the wheel in order to expose a new section to the airstream.

Microprocessor Controller for DOAS24

Control Variables

Fan Control

Supply Fan Control

The Supply Fan Control menu allows the user to adjust exhaust control setpoints

THIS SCREEN DISPLAYS THE SUPPLY FAN DELAY.

The supply fan delay will begin once the damper sequence is complete. This delay can be used to offset starting times between the supply fan and exhaust fan.

THIS SCREEN DISPLAYS MINIMUM AND MAXIMUM SUPPLY FAN SPEED PERCENTAGES.

The speed set point is the proportional percentage of the analog output from the controller to the VFD.

50% Speed = Min speed

100% Speed = Max speed

Possible Setpoint Sources:

Local – The fan speed will be constant; set from screen (e.g. 100%).

BMS – The BMS can directly control the fan speed (requires BMS communication

option).

Duct Pressure – Fan speed is determined by duct pressure control loop.

Space Pressure – Fan speed is determined by building pressure control loop.

– Fan speed is determined by CO2 control loop.

Single Zone VAV - The supply fan is modulated in addition to the supply air

temperature to satisfy the room temperature set point. A room temperature sensor is required.

2-Speed (High Speed Set Point) - Supply fan speed is reset to maximum speed when a contact closure is made. (Max Ventilation Mode).

THIS SCREEN DISPLAYS SOFT SHUTDOWN ENABLE CONDITIONS.

During a soft shutdown the following will occur:

• Tempering outputs immediately revert back to their off value; while

• Dampers remain open and fans continue to run; until

- The supply air temperature falls below the soft shutdown enable setpoint minus 5.0ºF; or

- The soft shutdown delay timer has expired.

Microprocessor Controller for DOAS 25

Control Variables

Fan Control

Exhaust Fan Control

The Exhaust Fan Control menu allows the user to adjust exhaust control setpoints.

THIS SCREEN DISPLAYS THE EXHAUST FAN DELAY AND ENABLE BASED ON OUTSIDE AIR DAMPER POSITION.

The exhaust fan delay will begin once the damper sequence is complete. This delay can be used to offset starting times between the supply fan and exhaust fan. This screen also provides the ability to enable the exhaust fan on a set outdoor air damper position if the unit is equipped with a modulating outdoor air damper.

THIS SCREEN DISPLAYS MINIMUM AND MAXIMUM EXHAUST FAN SPEED PERCENTAGES.

The speed set point is the proportional percentage of the analog output from the controller to the VFD.

25% Speed = Min speed

100% Speed = Max speed

Possible Setpoint Sources:

Local – The fan speed will be constant; set from screen (e.g. 100%).

BMS – The BMS can directly control the fan speed (requires BMS communication

option).

Space Pressure – Fan speed is determined by building pressure control loop.

Supply Fan Tracking with Offset – The exhaust fan will track the supply fan,

between a minimum and maximum position. An offset can be added to achieve the proper balance.

Outdoor Air Damper Tracking – The exhaust fan will proportionally track the outdoor air damper, between a minimum and maximum position.

Return Duct Static Pressure – Fan speed is determined by duct pressure control loop.

Microprocessor Controller for DOAS26

Control Variables

Occupancy

The Occupancy menu allows the user to adjust occupancy control parameters which includes occupancy control mode and schedule.

THIS SCREEN DISPLAYS THE CURRENT MODE OF OPERATION FOR OCCUPANCY CONTROL. STATU S OF THE OTHER MODE OPTION CAN ALSO BE FOUND ON THIS

SCREEN.

This screen allows the user to select the source of determining occupancy. The factory default is terminal ID6 on the controller.

BMS: BMS control (Reference Points List). BMS can be overridden with ID6.

Digital Input: Typically used with a remote time clock, motion sensor or switch.

Always Occ: Controller will always remain in occupancy mode.

Always Unocc: Controller will always remain in unoccupancy mode.

Schedule: Allows the user to set an occupancy schedule for each individual day

of the week.

THIS SCREEN ALLOWS THE USER TO ADJUST THE SCHEDULE.

Requires the user to enter a start time, stop time and the applicable days of the schedule.

THIS SCREEN DISPLAYS UNOCCUPIED START ENABLE MODES.

This screen only appears if unit is provided with unoccupied recirculation.

This screen allows the user to enable/disable modes of operation when in unoccupied recirculation control.

THIS SCREEN DISPLAYS OCCUPANCY OVERRIDE CONDITIONS.

Screen allows the user to override occupancy for a set duration.

Microprocessor Controller for DOAS 27

Control Variables

Advanced

Control Variables

Advanced

Manual Overrides

The Advanced menu allows the user to access several submenus regarding controller information, controller overrides, network settings, I/O configuration, and unit configuration. Submenu options are read only and will require the user to input proper login criteria. The service password (9998) is required to change service access menus. Consult factory for factory level access.

The Manual Overrides menus are for start-up, commissioning, and troubleshooting.

THIS SCREEN ALLOWS THE USER TO ACCESS THE IG FURNACE COMMISSIONING MENU.

This screen only appears if an indirect gas furnace was provided with the unit. Entering the furnace commissioning menu will step the user through the furnace start-up.

MANUAL OVERRIDE MODE

The Manual Overrides menu is for start-up, commissioning, and troubleshooting. This menu allows the user to override the control loops and specific inputs and outputs.

To access the Manual Overrides submenus, enter the service password (9998). Manual overrides must be enabled at this screen to allow the user to override control loops. Override options must be changed from Auto to Manual for manual control.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE UNIT ON OR OFF.

When manual override is set to enable, use the arrow buttons to turn the unit on or off.

THIS SCREEN ALLOWS THE USER TO OVERRIDE OCCUPANCY CONTROL.

When manual override is set to enable, use the arrow buttons to change occupancy control.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE SUPPLY FAN VFD SPEED.

The speed is the proportional percentage of the analog output from the controller to the VFD.

0% Speed = Min speed (determined by VFD)

100% Speed = Max speed (determined by VFD)

(Reference unit Installation and Operation Manual for VFD programming).

Microprocessor Controller for DOAS28

THIS SCREEN ALLOWS THE USER TO OVERRIDE EXHAUST FAN VFD SPEED.

This screen only appears if the unit is equipped with a exhaust fan VFD controlled by the microprocessor.

The speed is the proportional percentage of the analog output from the controller to the VFD.

0% Speed = Min speed (determined by VFD)

100% Speed = Max speed (determined by VFD)

(Reference unit Installation and Operation Manual for VFD programming).

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE POSITION OF THE OUTDOOR AIR D

AMPER.

This screen only appears if the unit is equipped with a modulating outdoor air and recirculation damper. The recirculation damper position will be the inverse of the outdoor air damper position shown.

0% = Outdoor air damper closed

100% = Outdoor air damper fully open

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE COMPRESSOR OPERATION

This screen only appears if the unit is equipped with DX cooling. When manual override is set to enable, use the arrow buttons to turn individual compressor requests on or off.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE MODULATING COMPRESSOR CONTROL LOOP.

When manual override is set to enable, use the arrow buttons to change the compressor modulation value.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE COOLING OPERATION.

When the cooling control is in the manual mode, use the arrow buttons to vary the cooling output.

Chilled Water: The cooling percent is directly proportional to the 0 - 10 VDC output signal.

0% Cooling = 0 VDC

100% Cooling = 10 VDC

Packaged Cooling: The cooling percent displays compressor engagement as a percent. The compressors are subject to the minimum on/off times and heating/ cooling lockouts.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE ELECTRIC HEATER OPERATION.

This screen only appears if the unit is equipped with electric post heat. Electric heater percentage is directly proportional to the 0 – 10 VDC output signal.

Microprocessor Controller for DOAS 29

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE HEATING OPERATION.

When the heating control is in the manual mode, use the arrow buttons to vary the heating output.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE ECONOMIZER CONTROL OPERATION.

When the heating control is in the manual mode, use the arrow buttons to vary the heating output.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE HOT GAS REHEAT OPERATION.

This screen only appears if modulating hot gas reheat option was provided with the unit. When the hot gas reheat loop control is in the manual mode, use the arrow buttons to vary the reheat output.

THIS SCREEN ALLOWS THE USER TO OVERRIDE THE ENERGY RECOVERY DEFROST OPERATION.

This screen only appears if modulating wheel frost control is equipped. When the defrost control ramp is in manual mode, use the arrow buttons to vary the defrost output.

0% = Maximum Wheel Speed

100% = Minimum Wheel Speed

Control Variables

Advanced

Network Settings

The Network Settings Menus allows the user to view and modify network settings. The service password (9998) is required to make changes.

THIS SCREEN ALLOWS THE USER TO VIEW AND ADJUST CONTROLLER TCP/IP SETTINGS.

This screen will appear with or without a network protocol provided with the unit.

This screen allows the user to configure the IP setting for BMS and/or when the Web User Interface will be utilized. The controller may have a DHCP serverassigned address or a manually-assigned static IP address. Factory settings are shown in the screen to the left.

To change pCO Board Address parameters:

1. Power on the controller and allow several minutes to initialize.

2. Go to Network Settings menu and view pCO Board Address screen.

3. Move cursor to desired parameter by pressing the enter button. Press up and down arrows to adjust the parameter. Press enter to accept adjusted value.

4. Once desired parameters have been entered, enable the ‘Save Settings’ option and press the enter button.

5. Reboot the controller by cycling power to the unit. Allow several minutes for the controller to initialize.

6. View pCO Board Address Config. If changed values did not save, contact the factory.

THIS SCREEN ALLOWS THE USER TO VIEW AND ADJUST CONTROLLER BACNET IP CONFIG SETTINGS.

This screen will appear if the unit is set for BACnet IP and allows the user to set the device and port settings.

Microprocessor Controller for DOAS30

THIS SCREEN ALLOWS THE USER TO VIEW AND ADJUST CONTROLLER MODBUS TCP S

LAVE.

This screen will appear if the unit is set for Modbus TCP and allows the user to set device ID number.

THIS SCREEN ALLOWS THE USER TO ADJUST BACNET AND MSTP PARAMETERS.

This screen only appears if the selected BMS protocol is set to BACnet MSTP. Factory settings are shown in the screen to the left.

To change BACnet MSTP parameters:

1. Power on the controller and allow several minutes to initialize.

2. Go to Network Settings menu and view BACnet MSTP Config screen.

3. Move cursor to desired parameter by pressing the enter button. Press up and down arrows to adjust the parameter. Press enter to accept adjusted value.

4. Once desired parameters have been entered, enable the ‘Save Settings’ option and press the enter button.

5. Reboot the controller by cycling power to the unit. Allow several minutes for the controller to initialize.

6. View BACnet MSTP Config. If changed values did not save, contact the factory.

THIS SCREEN ALLOWS THE USER TO ADJUST MODBUS PARAMETERS.

This screen only appears if the selected BMS protocol is set to Modbus. Factory settings are shown in the screen to the left.

To change Modbus RTU parameters:

1. Power on the controller and allow several minutes to initialize.

2. Go to Network Settings menu and view Modbus RTU Config screen.

3. Move cursor to desired parameter by pressing the enter button. Press up and down arrows to adjust the parameter. Press enter to accept adjusted value.

4. Once desired parameters have been entered, enable the ‘Save Settings’ option and press the enter button.

5. Reboot the controller by cycling power to the unit. Allow several minutes for the controller to initialize.

6. View Modbus RTU Config. If changed values did not save, contact the factory.

THIS SCREEN ALLOWS THE USER TO ENABLE THE BMS WATCH D OG FUNCTION.

The BMS watchdog function verifies BMS connectivity. The watchdog is required for the BMS to take the place of a hardwired sensor. The BMS toggles the watchdog variable from true to false within the timeout delay. If the timer expires, the controller falls back to hardwired sensors until the BMS connection can be established. At this time, a BMS watchdog alarm activates.

The following variables may be used by the BMS in place of hardwired sensors:

• Outside_RH_from_BMS

• Outside_Temp_from_BMS

• Return_RH_from_BMS

• Return_Temp_from_BMS

• Space_1_CO2_from_BMS

• Return_CO2_from_BMS

• Space_RH_from_BMS

• Space_Static_from_BMS

• Space_Temp_from_BMS

SENSOR SOURCE SPACE TEMP

The sensor source can be changed to source by BMS through the controller or by a dedicated BMS point. Reference Points List above and in the Appendix for more detailed point information. Screen to the left is an example of the sensor source type. Source can be set for local or BMS at this screen.

Microprocessor Controller for DOAS 31

Control Variables

Advanced

Backup/Restore

The Backup/Restore Menus allows the user to create a backup file of setpoints and configuration variables on a USB drive or in the controller’s internal memory.

Connecting to USB Drives

The controller has built-in USB ports for connecting to USB drives. The USB drives can be used for backing up all settings and reported conditions such as alarm history and current values. This creates a file named User_Backup.txt.

USB Type A

USB Type B

CREATING A BACKU P FILE

Important:

• At first startup or commissioning, or prior to communicating with Technical Support about performance issues, we recommend creating a backup file for each controller.

• Name each file with the unit sales order–line number found on the silver nameplate attached to the electrical access door.

• Also consider creating a backup file whenever significant program changes are made.

To create a system backup file using the handheld or virtual keypad/display buttons:

1. Go to the Main Menu/Ctrl Variables/Advanced/Login screen. Press the Enter

and Up or Down arrow buttons to enter the service password, which is 9998.

2. Go to the Main Menu/Ctrl Variables/Advanced/Backup/Restore screen.

3. Press the Up or Down arrow buttons to navigate to the Backup Settings screen.

4. Press the Enter and Up or Down arrow buttons to select the backup location

(internal memory or USB). If creating a backup to a USB drive, insert a USB drive into the main controller.

5. Press Enter to highlight and then the Up or Down arrow buttons to fill the Save

checkbox. This action creates the backup file.

Microprocessor Controller for DOAS32

RESTORING FROM A BACKUP FILE

From USB

1. Place the restore ﬁle in the root directory of a USB drive. (Do not place the ﬁle within a folder on the USB drive.) The ﬁle must be named: User_Backup.txt

2. Insert the USB drive into the controller’s USB port.

3. Go to the Main Menu/Unit Enable screen. Press the Enter and Up or Down arrow buttons to disable the unit.

4. Go to the Main Menu/Ctrl Variables/Advanced/Login and Up or Down arrow buttons to enter the service password (9998).

5. Go to the Main Menu/Ctrl Variables/Advanced/Backup/Restore screen.

6. Press the Up or Down arrow buttons to navigate to the USB Restore screen.

7. Press Enter to highlight and then the Up or Down arrow buttons to ﬁll the Restore checkbox. This action restores the backup ﬁle. If there is an error during the process, the speciﬁc error is displayed on this screen.

8. Cycle power to the controller.

From internal memory

1. Go to the Main Menu/Unit Enable screen. Press the Enter and Up or Down arrow buttons to disable the unit.

2. Go to the Main Menu/Ctrl Variables/Advanced/Login and Up or Down arrow buttons to enter the service password, which is 9998.

3. Go to the Main Menu/Ctrl Variables/Advanced/Backup/Restore screen.

4. Press the Up or Down arrow buttons to navigate to the Internal Restore screen. This screen is only available when a backup ﬁle exists in internal memory.

5. Press Enter to highlight and then the Up or Down arrow buttons to ﬁll the Restore checkbox. This action restores the backup ﬁle. If there is an error during the process, the speciﬁc error is displayed on this screen.

6. Cycle power to the controller.

screen. Press the Enter

Microprocessor Controller for DOAS 33

Control Variables

Advanced

I/O Configuration

Control Variables

Advanced

Unit Configuration

The IO Configuration Menu allows the user to view and modify controller input and output points.

THIS SCREEN ALLOWS THE USER TO VIEW AND EDIT I/O POINTS.

This screen is read only and will require the factory password to make changes. Screen to the left is an example of an analog input configuration screen. Similar screens appear for remaining I/O when selected.

To monitor individual I/O points:

1. Press the enter button to highlight the I/O type.

2. Press the up and down arrows to change the IO type.

3. Press the enter button to highlight the controller channel.

4. Press the up and down arrows to change the channel.

THIS SCREEN ALLOWS THE USER TO ENABLE I/O CONFIGURATION EDITS.

Changes to the IO configuration requires the factory login password. Consult factory for IO configuration changes.

ADJUSTMENT OF I/O CONFIGURATION MUST ONLY BE DONE UNDER FACTORY GUIDANCE! IMPROPER ADJUSTMENT MAY RESULT IN SYSTEM DAMAGE!

The Unit Configuration menus allows the user to view unit configuration provided from factory. Configuration menus listed below can be altered with the factory password. Consult factory for unit configuration changes!

THIS SCREEN ALLOWS THE USER TO VIEW AND CHANGE THE EXHAUST FAN CONTROL T

YPE.

Reference control variables for possible exhaust fan control methods.

THIS SCREEN ALLOWS THE USER TO VIEW AND CHANGE THE UNOCCUPIED DEHUMIDIFICATION CALL.

Reference control variables for possible unoccupied dehumidification call methods.

THIS SCREEN ALLOWS THE USER TO VIEW AND CHANGE THE UNOCCUPIED UNIT OPERATION.

Possible unoccupied unit operation methods include:

• Unit Off

• Night Setback Cycle*

• Recirculation with Unoccupied Setpoints*

• Normal Operation with Unoccupied Setpoints

Note: An askterisk indicates method is only available if the unit is equipped with an unoccupied recirculation damper.

THIS SCREEN ALLOWS THE USER TO ENABLE MORNING WARM UP AND COOL DOWN.

The user can enable morning warm up, morning cool down, and set the duration for the sequence.

Microprocessor Controller for DOAS34

Alarms

The Alarms menu allows the user to view active alarms, reset active alarm (if possible), and alarm history.

ACTIVE ALARMS

If an alarm occurs, the button will glow red on the controller and the remote display (if installed).

To view alarm, press the Alarm button once. This will display the most recent alarm. If the alarm cannot be cleared, the cause of the alarm has not been fixed. Press the up and down buttons to view any additional occurring alarms.

RESET ACTIVE ALARMS

This screen allows the user to clear active alarms.

ALARM EVENT HISTORY

This screen allows the user view recent alarms. To view all saved alarms, press the “down” button to enter the data logger.

CLEAR ALARM LOG

This screen allows the user to clear all alarms in alarm log history.

IG Furnace Alarm (AL) Descriptions

IG no flame 3 try AL

IG combustion fan high pressure switch failure

IG furnace ignition control Indicates an alarm from the ignition controller. Alarm only

Pressure switch closed with combustion fan off

Combustion fan not proved

IG furnace max retry Indicates that the max number of retries was reached. Alarm and Furnace lockout

IG High Temp AL

IG offline Indicates communication with furnace control has failed. Alarm only

IG Lg Man No Flame AL No flame after 3 trials for ignition on the large manifold. Alarm only

Indicates a furnace failure to light or properly sense flame after 3 trials.

Indicates a call for high speed combustion fan but high pressure switch did not close.

Indicates low pressure switch was closed with no call for combustion fan.

Indicates a call for low speed combustion fan but low pressure switch did not close.

Indicates that power was lost from the High Temp Limit Sensor. Check for high limit trip.

Alarm only

Microprocessor Controller for DOAS 35

Appendix: Remote Display (pGD1)

The pGD1 is an optional remote display for use with manufacturer’s microprocessor controllers. The remote display allows for remote monitoring and adjustment of parameters of the unit mounted controller. The remote display allows identical access to menus and screens as the unit mounted controller display.

Specifications

Carel Model PGD1000W00

Power Supply

Max distance from unit controller 150 feet

Required Cable 6P6C RJ25/RJ12 Cable (straight)

Operating Conditions

Display Type Backlit LED with lighted buttons

Installation

The remote display connects to the unit mounted controller through a six-wire RJ25 or RJ12 telephone cable (straight). When ordered from the factory, a 10 ft. cable is provided with the remote display. The display and cable can be used to assist with start-up and maintenance.

Connecting Cable

If mounted remotely, the factory cable can either be extended or replaced with a longer cable to obtain the necessary distance. The resulting cable connections should be a “straight through cable,” where pins on one end correspond identically to the pins on the opposite end. If making your own cable, use the same pin-out for each end.

Power supplied from unit controller through RJ25 cable

-4°F to 140°F, 90%RH (non-condensing)

6 12

NTC Temperature Sensor Chart

120

110

100

Temperature (ºF)

4 6 8 10 12 14 16 18 20 22 24 26 28

Resistance (k:)

Microprocessor Controller for DOAS36

Appendix: I/O Expansion Board (c.pCOe) Quick Start

The expansion board is an I/O module than can be used to monitor additional statuses or provide commands from large board controller. It allows the user to view and control:

• 6 Universal Inputs (Digital Input*, NTC, 0/1VDC, 0/10VDC, 0/20mA, 4/20mA, 0/5VDC) *Only dry to ground contacts

24 VAC

Power

Address Ext. ProtBaud

OFF

1234567

9101112131415

Address Ext Baud Prot

can be utilized for digital inputs. Applying voltage will result in damage to the I/O expansion board.

• 4 Analog Outputs (VDC)

• 6 Digital Outputs

The inputs and outputs can be monitored and controlled by the Building

Universal

Inputs

Analog

Outputs

57.6 K

Modbus

9.6 K

38.4 K

CAREL

19.2 K

Digital

Outputs

Management System. Reference Points List for detailed point information.

Setup

In order for the controller to communicate with the c.pCOe, several parameters must be adjusted. If you have a c.pCOe installed from the factory, the controller is already set up for communication with the main controller. The factory password is required for expansion board and I/O configuration updates. Consult factory for I/O configuration changes.

Enabling the pCOe in the Main Controller. - To enable the c.pCOe expansion I/O module, go to Ctrl Variables/Advanced/Unit Config. User will have to enter the Factory Password to make any edits at this point. Consult factory for factory password and configuring the expansion board. The expansion board must be enabled to configure spare I/O points. Once enabled, the user must reboot the controller. See screens to the left for expansion board enable points.

Configuring the I/O Type - In order to edit and configure the I/O configuration of the unit, go to Ctrl Variables/Advanced/I/O Configuration. The user must enable the Editable option for configuring I/O points. If configuring a new I/O point, ‘Scroll by All Configured’ must be deselected to view all I/O options.

Change or Update the I/O Point - Once the editable option is selected, the user must scroll to the I/O Configuration Menu. At this menu the desired I/O type can be selected. Once selected the user can configure the desired channel at the expansion board. The channel will have an ‘E’ designation for expansion board. Aux In Customer 1–6, Aux Analog Out 1-4, and Aux Digital Out 1-6 will be allocated for the I/O expansion board. See example to the left.

Viewing c.PCOe Auxiliary Values – Once the expansion board I/O is configured, the user can view and/or change the I/O type by navigating to Ctrl Variables/Aux I/O Config.

Microprocessor Controller for DOAS 37

Appendix: Room Thermostat Quick Start

The room thermostat gives users the ability to view the room temperature and relative humidity (optional) and control the active room set points from the adjustable display. The room thermostat also has the ability to send the unit into temporary occupied mode. It is also provides the functionality to average up to 4 temperature readings through the microprocessor. The room thermostat is shipped loose with installation by others and is a Modbus connected device.

Room thermostat functions:

• Temporary occupancy override control

• Temperature and relative humidity monitoring

• Temperature and relative humidity set point adjustability

• Status icon on LCD display with push buttons

• Optional temperature monitoring up to 4 sensors

Display

If more than one room thermostat is provided for averaging, only one room thermostat will be provided with a display and push buttons for adjustment.

Adjusting SET POINT - The default display will show the current temperature value for the room. Use the scroll button to index through additional sensor parameters. Parameters with the "SET POINT" icon displayed above the temperature display are adjustable. Use the Up/Down buttons to adjust the set point, and use the scroll button to view the next parameter or return to the normal display mode.

Up/Down Button Function - The Up/Down buttons are used to adjust editable parameters including the temperature and humidity set point.

Override Button Function - The display shows a person in the lower left corner of the display at all times. If the person is solid, the unit is operating in occupied mode. If it is an outline of the person, the unit is in unoccupied mode. Pushing the Override button when the unit is in unoccupied mode will allow a temporary override sequence to Occupied mode for a period of 1 to 3 hours (adjustable at the unit microprocessor).

Initial Setup and Communication Configuration

The room thermostat is a Modbus connected device There can be up to three additional Modbus temperature sensors added for room temperature averaging. The sensors must all be connected in a daisy chain configuration.

The microprocessor controller will be pre-configured for one room thermostat. If room temperature averaging is desired, additional field setup will be required both in the controller and on the Modbus room sensors:

• Each room sensor must have the DIP switches adjusted on the back of the sensor to the corresponding switches. Reference Room Thermostat Modbus Address chart on the following page for DIP switches settings.

• Once the address is set and the wires are connected the “Status” LED should be a steady green and the “Network” LED should be a quick blinking amber/green color.

• In the Controller, enter the Ctrl Variables Menu/Temperature and scroll down in the Temperature Menu to select BAPI Modbus Stat. Choose the number of room sensor being used (1-4).

Microprocessor Controller for DOAS38

Appendix: Room Thermostat Quick Start

Status LED

Green indicates that the unit is operating properly. Red indicates that there is a problem with the unit.

Terminal Description

GND Power Supply Ground (common to the controller)

Net B RS485 network connection (Data - )

Net A RS485 network connection (Data +)

Power Power supply hot

Unit

Controller

+Vtermo

GND

TAP-Stat

POWER

GND

NET B

Tx/Rx

NET A

Network LED

Flashing Red Slowly indicates that there has been no communications for 60 seconds.

Flashing Green Slowly indicates that there have been normal communications within

the last 60 seconds.

Flashing Green Slowly with Quick Red Flashes; the quick red ﬂashes indicate active communications.

Room Thermostat Modbus Address

T-Stat 1 (Display) T-Stat 2 T-Stat 3 T-Stat 4

Address in Microprocessor 10 11 12 13

Dip Switch Set on Stat Sw 2 + Sw 8 Sw 1 + Sw 2 + Sw 8 Sw 4 + Sw 8 Sw 1 + Sw 4

In order for the room thermostat to communicate with the microprocessor, the correct baud rate must be set in the room thermostat. To set the baud rate:

• The “PROG” DIP switch on the back of the room thermostat must be flipped to the right side.

• Use the Setpoint Down button to display P11 on the room thermostat.

• Push the Scroll button and use the Setpoint Up/Down buttons to adjust the baud rate to 192.

• Once 192 is displayed, push the Scroll button again to save the setting. Once the setting is saved, P11 should appear on the display.

• Flip the “PROG” DIP switch on the back of the room thermostat back to the left. The room thermostat should communicate and be set back to normal mode.

If the occupancy override time needs to be adjusted:

• If the occupancy override is enabled from the room thermostat or the unit microprocessor, it will override for the period of time set on this menu screen.

• To adjust the temperature override time, enter the following menu options at the controller, Cntrl Variables/Occupancy. Scroll down at the Occupancy Menu and select Occ Timed Override. This menu will allow the user to enable occupancy override from the controller and set override duration.

Baud Rate Setting

Occupancy Override Time Adjustment

Microprocessor Controller for DOAS 39

Appendix: GreenTrol® Airflow Monitoring Quick Start

The GreenTrol® airflow monitoring station measures airflow using advanced thermal dispersion technology. An integral LCD display provides a local indication of airflow measurement and device configuration. The airflow monitor also features Modbus communication allowing the main unit microprocessor to monitor the airflow as well. The GreenTrol also accepts up to two airflow probes for averaging.

GreenTrol Airflow Monitor functions:

• LCD readout of measured airflow

• Dual airflow probe averaging

• Modbus connectivity

Display and Navigation

The LCD screen will by default show the current airflow that is being measured. To enter the menu to set up the monitoring station the user must remove the front cover of the GreenTrol to uncover the navigation buttons. Press and hold the UP and DOWN buttons at the same time for 3 seconds to enter the menu.

Enter Button Function - The ENTER button allows the user to go into the selected menu or function, as well as save the selected value.

Up/Down Button Function - The Up/Down buttons are used to navigate the menu and to change values in the menu.

Esc Button Function - The ESC button allows the user to exit the current menu or function.

Microprocessor Controller for DOAS40

VARIABLE DESCRIPTION

Cold_Coil_1_Temp_

Analog_Input

CL_Coil_Spt_Temp

CL_Supply_Spt_Temp

Outside_Air_Temp_

Analog_Input

Space_Temp_Analog_

Input

Supply_Temp_Analog_

Input

Outside_RH_Analog_

Input

Space_RH_Analog_

Input

Space_Static_

Pressure_Analog_Input

Supply_Duct_Static_

Pressure_Analog_Input

Space_CO2_1_

Analog_Input

Circuit_A_Discharge_

Pressure_Analog_Input

Circuit_B_Discharge_

Pressure_Analog_Input

Aux_In_Customer_1

Aux_In_Customer_2

Aux_In_Customer_3

Aux_In_Customer_4

Aux_In_Customer_5

Aux_In_Customer_6

Cold Coil 1 Temperature 25 AI

Controls Lite Cooling Coil

Setpoint Temperature value

Controls Lite Supply

Setpoint Temperature value

Outside Air Temperature 37 AI

Space Temperature 44 AI

Supply Temperature 45 AI

Outside % Relative

Humidity

Space % Relative Humidity 89 AI

Space Static Pressure 94 AI

Supply Duct Static Pressure 95 AI

Space 1 CO2 ppm 116 AI

Circuit A Discharge

Pressure

Circuit B Discharge

Pressure

Customer defined auxiliary

input

Customer defined auxiliary

input

Customer defined auxiliary

input

Customer defined auxiliary

input

Customer defined auxiliary

input

Customer defined auxiliary

input

Appendix: Points List

ACTIVE

TEXT

INACTIVE

TEXT

Analog Inputs - Read Only

OBJECT

INSTANCE

31 AI

32 AI

86 AI

119 AI

121 AI

640 AI

642 AI

644 AI

646 AI

648 AI

650 AI

BACNET MODBUS

OBJECT

TYPE

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0.1 30243 Input 2

0.1 30255 Input 2

0.1 30257 Input 2

0.1 30267 Input 2

0.1 30281 Input 2

0.1 30283 Input 2

0.1 30349 Input 2

0.1 30355 Input 2

0.01 30365 Input 2

0.01 30367 Input 2

10 30401 Input 2

0.1 30407 Input 2

1 30411 Input 2

0.1 30639 Input 2

0.1 30641 Input 2

0.1 30643 Input 2

0.1 30645 Input 2

0.1 30647 Input 2

0.1 30649 Input 2

TYPE

SIZE

Microprocessor Controller for DOAS 41

VARIABLE DESCRIPTION

Main Temperature Set

Temperature_Setpoint

point. Supply, Space, or

Return target temperature

Heat/Cool Spt Deadband

when Room or Return

Temperature_Heat_

Cool_Deadband

control is active. Clg Spt =

Deadband /2 + Temp Spt.

Htg Spt = Deadband /2 -

Temp Spt.

Cooling_Coil_Setpoint_

Min

Dehumidification_

Setpoint

Outside_Dewpoint_

Setpoint

Indoor_Dewpoint_

Setpoint

Unocc_Indoor_

Dewpoint_Setpoint

Unoccupied_Cooling_

Setpoint

Unoccupied_

Dehumidification_

Setpoint

Unoccupied_Heating_

Setpoint

Economizer_Temp_

Enable_Setpoint

Economizer_Enthalpy_

Enable_Setpoint

Outside_RH_from_

BMS

Outside_Temp_from_

BMS

Space_1_CO2_from_

BMS

Cooling Coil Leaving Air

Setpoint

Dehumidification Setpoint.

%RH for Space or Return

control.

Outside Dewpoint

Dehumidification Trigger

Setpoint

Indoor Dewpoint

Dehumidification Trigger

Setpoint

Unoccupied Indoor

Dewpoint Dehumidification

Trigger Setpoint

Unoccupied Cooling

Setpoint

Unoccupied

Dehumidification %RH

Setpoint

Unoccupied Heating

Setpoint

Economizer Ambient Temp

Enable Setpoint. Allow Econ

when OAT<Spt

Economizer Enthalpy

Enable Setpoint. Allow Econ

when OA Enthalpy<Spt

Outside RH from BMS. Used

when source selection is

set to BMS.

Outside Temp from BMS.

Used when source selection

is set to BMS.

Space 1 CO2 from BMS.

Used when source selection

is set to BMS.

Space RH from BMS. Used

Space_RH_from_BMS

when source selection is

set to BMS.

Space_Static_from_

BMS

Space_Temp_from_

BMS

Cooling_Lockout_

Setpoint

Heating_Lockout_

Setpoint

Space_Static_

Pressure_Setpoint

Space Static from BMS.

Used when source selection

is set to BMS.

Space Temp from BMS.

Used when source selection

is set to BMS.

Cooling Ambient Lockout

Setpoint

Heating Ambient Lockout

Setpoint

Space Static Pressure

Setpoint

Appendix: Points List

ACTIVE

TEXT

INACTIVE

TEXT

OBJECT

INSTANCE

Analog Values - Read/Write - Commandable

1AV

2AV

3AV

5AV

6AV

7AV

9AV

10 AV

11 AV

12 AV

16 AV

17 AV

21 AV

22 AV

25 AV

28 AV

29 AV

30 AV

31 AV

32 AV

37 AV

BACNET MODBUS

OBJECT

TYPE

ACCESS HYST INDEX

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

0 40001 Holding 2

0 40003 Holding 2

0 40005 Holding 2

0 40009 Holding 2

0 40011 Holding 2

0 40013 Holding 2

0 40017 Holding 2

0 40019 Holding 2

0 40021 Holding 2

0 40023 Holding 2

0 40031 Holding 2

0 40033 Holding 2

0.1 40041 Holding 2

0.1 40043 Holding 2

0.1 40049 Holding 2

0.1 40055 Holding 2

0.1 40057 Holding 2

0.1 40059 Holding 2

0.1 40061 Holding 2

0.1 40063 Holding 2

0.1 40073 Holding 2

TYPE

SIZE

Microprocessor Controller for DOAS42

Appendix: Points List

VARIABLE DESCRIPTION

Supply_Duct_Static_

Pressure_Setpoint

Supply Duct Static Pressure

Setpoint

ACTIVE

TEXT

Space_CO2_Setpoint Space CO2 Setpoint 39 AV

SF_Control_Signal_

BMS

EF_Control_Signal_

BMS

OAD_Control_Signal_

BMS

Outside_Air_Damper_

Minimum_Setpoint

Aux_BMS_Analog_

Output_1

Aux_BMS_Analog_

Output_2

Aux_BMS_Analog_

Output_3

Aux_BMS_Analog_

Output_4

BMS to control signal for

supply fan speed

BMS to control signal for

exhaust fan speed

Allows the BMS to control

OAD position. True = BMS.

False = Local.

Outside Air Damper

Minimum Setpoint

BMS Commanded auxilary

analog output

BMS Commanded auxilary

analog output

BMS Commanded auxilary

analog output

BMS Commanded auxilary

analog output

INACTIVE

TEXT

OBJECT

INSTANCE

38 AV

133 AV

134 AV

136 AV

137 AV

138 AV

139 AV

140 AV

141 AV

OBJECT

BACNET MODBUS

TYPE

ACCESS HYST INDEX

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

0.1 40075 Holding 2

0.1 40077 Holding 2

0.1 40083 Holding 2

0.1 40085 Holding 2

0.1 40089 Holding 2

1 40091 Holding 2

0.1 40093 Holding 2

0.1 40095 Holding 2

0.1 40097 Holding 2

0.1 40099 Holding 2

TYPE

SIZE

Microprocessor Controller for DOAS 43

Appendix: Points List

VARIABLE DESCRIPTION

ACTIVE

TEXT

0: Off/Standby 1: Unoccupied Start 2: Occupied Start 5: Dampers Open 6: Fan Start Delay 7: Fans Starting 9: Heat/Cool Delay 10: System On 11: Soft Shutdown 12: System Disabled 13: Remote Off

Unit_Status_Mode

14: Shutdown Alarm 19: Fans Only 20: Economizing 21: Cooling 22: Heating 23: Dehumidifying 25: HGRH Purging 26: Defrost Active 28: Cooling & Heating 29: Dehum w/Heat 30: Overrides Active 31: Expansion Offline 51: IO Test. Sys Disabled

Supply_Temperature_

Calculated_Setpoint

Cooling_1_Ramp_

Capacity

Active Supply Temperature

Setpoint

Cooling Ramp 1 Status

Value

Defrost_Ramp Defrost Ramp 47 AV

Economizer_Ramp Economizer Ramp 48 AV

Exhaust_Fan_Space_

Static_Pressure_Ramp

Exhaust_Fan_Supply_

Tracking_Ramp

Head_Pressure_

Control_Ramp_1_

Ramp

Head_Pressure_

Control_Ramp_2_

Ramp

Exhaust Fan Space Static

Pressure Ramp

Exhaust Fan Supply

Tracking Ramp

Head Pressure Control

Ramp 1

Head Pressure Control

Ramp 2

Heating_Ramp Heating Ramp 60 AV

Hot_Gas_Reheat_

Ramp

Space_CO2_Control_

Ramp

Supply_Duct_Static_

Pressure_Ramp

Supply_Fan_Space_

Static_Pressure_Ramp

Hot Gas Reheat Ramp 61 AV

Space CO2 Control Ramp 71 AV

Supply Duct Static Pressure

Ramp

Supply Fan Space Static

Pressure Ramp

Winter_Ramp_Output Winter Ramp Output 75 AV

Outside_Dewpoint Outside Dewpoint 82 AV

Outside_Enthalpy Outside Enthalpy 83 AV

Space_Dewpoint Space Dewpoint 88 AV

Space_Enthalpy Space Enthalpy 89 AV

Total_Exhaust_Fan_

CFM_BMS

Total Exhaust Fan CFM 107 AV

OAD_CFM_BMS OAD CFM 129 AV

OAD_Space_Static_

Pressure_Ramp

OAD Static Pressure Ramp 131 AV

INACTIVE

TEXT

OBJECT

INSTANCE

Analog Values - Read Only

40 AV

41 AV

43 AV

49 AV

50 AV

51 AV

52 AV

72 AV

74 AV

OBJECT

TYPE

BACNET MODBUS

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0 30001 Input 2

0.1 30003 Input 2

1 30007 Input 2

1 30015 Input 2

1 30017 Input 2

1 30019 Input 2

1 30021 Input 2

1 30023 Input 2

1 30025 Input 2

1 30041 Input 2

1 30043 Input 2

1 30063 Input 2

1 30065 Input 2

1 30069 Input 2

1 30071 Input 2

0.1 30085 Input 2

0.1 30087 Input 2

0.1 30097 Input 2

0.1 30099 Input 2

10 30135 Input 2

10 30173 Input 2

1 30177 Input 2

TYPE

SIZE

Microprocessor Controller for DOAS44

VARIABLE DESCRIPTION

Active_Temperature_

Setpoint

Chilled_Water_1_

Valve_Analog_Output

Condenser_1_Analog_

Output

Condenser_2_Analog_

Output

Electric_Heater_1_

Analog_Output

Energy_Recovery_

Analog_Output

Exhaust_Fan_Speed_

Analog_Output

Hot_Gas_Reheat_

Analog_Output

Hot_Water_Valve_1_

Analog_Output

Mod_Gas_Furnace_1_

Analog_Output

Outside_Air_Damper_

Analog_Output

Supply_Fan_Speed_

Analog_Output

Modulating_

Compressor_Analog_

Output_BMS

Circuit_A_Sat_

Discharge_

Temperature

Circuit_B_Sat_

Discharge_

Temperature

Active Temperature Set

point

Chilled Water 1 Valve

Analog Output

Condenser 1 Analog Output 205 AV

Condenser 2 Analog Output 206 AV

Electric Heater 1 Analog

Output

Energy Recovery Analog

Output

Exhaust Fan Speed Analog

Output

Hot Gas Reheat Analog

Output

Hot Water Valve 1 Analog

Output

Mod Gas Furnace 1 Analog

Output

Outside Air Damper Analog

Output

Supply Fan Speed Analog

Output

Modulating Compressor

Analog Output - Valent BMS

Circuit A Saturated

Discharge Temperature

Circuit B Saturated

Discharge Temperature

Appendix: Points List

ACTIVE

TEXT

INACTIVE

TEXT

OBJECT

INSTANCE

132 AV

201 AV

221 AV

229 AV

231 AV

235 AV

236 AV

242 AV

250 AV

264 AV

285 AV

286 AV

287 AV

BACNET MODBUS

OBJECT

TYPE

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0.1 30179 Input 2

0.1 30473 Input 2

0.1 30481 Input 2

0.1 30483 Input 2

0.1 30513 Input 2

0.1 30517 Input 2

0.1 30521 Input 2

0.1 30523 Input 2

0.1 30525 Input 2

0.1 30537 Input 2

0.1 30541 Input 2

0.1 30557 Input 2

0.1 30585 Input 2

0.1 30587 Input 2

0.1 30589 Input 2

TYPE

SIZE

Microprocessor Controller for DOAS 45

Appendix: Points List

VARIABLE DESCRIPTION

Exhaust_Fan_1_

Status_Digital_Input

Occupancy_Digital_

Input

Outside_Filter_Alarm_

Digital_Input

Shutdown_Alarm_

Digital_Input

Supply_Fan_1_Status_

Digital_Input

Unit_Enable_Digital_

Input

Wheel_Status_Digital_

Input

Exhaust Fan 1 Status Active Inactive 23 BI

Occupancy Digital Input

Status

Outside Filter Alarm Digital

Input Status

Shutdown Alarm Digital

Input Status

Supply Fan 1 Status Active Inactive 78 BI

Remote Unit Enable Digital

Input Status

Heat Wheel Status Active Inactive 83 BI

ACTIVE

TEXT

Active Inactive 53 BI

Active Inactive 54 BI

Active Inactive 75 BI

Active Inactive 82 BI

BMS Watchdog command.

Used to determine comm

BMS_Watchdog

status. Must heartbeat

within the watchdog

Active Inactive 1 BV

timeout delay to detect

comm status.

System_Enable

BMS_Occupancy_

Command

Master system enable/

disable point.

Occupancy Command. True

= Unoccupied. False =

Occupied.

Enable Disable 2 BV

Unoccupy Occupy 3 BV

Reset_All_Alarms Alarm Reset Command. Reset Normal 4 BV

Outside_RH_Source_

BMS

Outside_Temp_

Source_BMS

Space_1_CO2_

Source_BMS

Space_RH_Source_

BMS

Space_Static_Source_

BMS

Space_Temp_Source_

BMS

SF_Control_Source_

BMS

EF_Control_Source_

BMS

OAD_Control_Source_

BMS

Outside RH Source

Selection. True = BMS.

False = Local.

Outside Temp Source

Selection. True = BMS.

False = Local.

Space 1 CO2 Source

Selection. True = BMS.

False = Local.

Space RH Source Selection.

True = BMS. False = Local.

Space Static Source

Selection. True = BMS.

False = Local.

Space Temp Source

Selection. True = BMS.

False = Local.

Allows the BMS to control

supply fan speed. True =

BMS. False = Local.

Allows the BMS to control

exhaust fan speed. True =

BMS. False = Local.

Allows the BMS to control

OAD position. True = BMS.

False = Local.

BMS Local 5 BV

BMS Local 6 BV

BMS Local 9 BV

BMS Local 12 BV

BMS Local 13 BV

BMS Local 14 BV

BMS Local 56 BV

BMS Local 57 BV

BMS Local 59 BV

INACTIVE

TEXT

OBJECT

INSTANCE

Binary Inputs - Read Only

Binary Values - Read/Write - Commandable

BACNET MODBUS

OBJECT

TYPE

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

Read_

Commandable

0 24 Discrete

0 54 Discrete

0 55 Discrete

0 76 Discrete

0 79 Discrete

0 83 Discrete

0 84 Discrete

0 2 Coil

0 3 Coil

0 4 Coil

0 5 Coil

0 6 Coil

0 7 Coil

0 10 Coil

0 13 Coil

0 14 Coil

0 15 Coil

0 19 Coil

0 20 Coil

0 22 Coil

TYPE

SIZE

Microprocessor Controller for DOAS46

Appendix: Points List

VARIABLE DESCRIPTION

ACTIVE

TEXT

Occupied Occupied Status. Occupied

Unoccupied Unoccupied Status. Unoccupied Occupied 17 BV

Unoccupied_Cooling_

Call

Unoccupied_

Dehumidification_Call

Unoccupied_Heating_

Call

Occupied_Start

Unoccupied_Start

Unoccupied Cooling Call

Status

Unoccupied

Dehumidification Call

Status

Unoccupied Heating Call

Status

Occupied Start Command

Status

Unoccupied Start Command

Status

Active Inactive 18 BV

Active Inactive 19 BV

Active Inactive 20 BV

Active Inactive 21 BV

Active Inactive 22 BV

Status to indicate startup

Enable_Controls

is complete and the unit is

Enabled Disabled 23 BV

ready.

General alarm point.

Global_Alarm

Optionally set to indicate

any alarm is active, or a

Alarm Normal 24 BV

shutdown alarm is active.

Shutdown alarm status.

System_Shutdown_

Alarm

When true, System Enable will be set to false and the

Shutdown Normal 25 BV

unit will remain off.

Indicates there is a open

Damper_Open

air path and the supply fan

Open Closed 26 BV

can run.

Cooling_is_On

Economizer_is_On

Heating_is_On

Dehumidification_

Mode_Enabled

Manual_Override_

Active

Cooling_Not_Locked_

Out

Heating_Not_Locked_

Out

Preheat_Not_Locked_

Out

HGRH_Purging

Allow_Dampers

Indicates that the unit is

cooling.

Indicates that the unit is

economizing.

Indicates that the unit is

heating.

Indicates that the unit is

dehumidifying.

Indicates that manual

overrides are active.

Indicates that cooling is

allowed.

Indicates that heating is

allowed.

Indicates that preheat is

allowed.

Indicates that the hot gas

reheat value is purging.

Startup sequence command

to open dampers

Active Inactive 27 BV

Active Inactive 28 BV

Active Inactive 29 BV

Active Inactive 31 BV

Override Normal 32 BV

Allowed

Active Inactive 37 BV

Yes No 43 BV

Startup sequence command

Allow_Exhaust_Fans

to trigger exhaust fans to

Yes No 44 BV

start

Startup sequence command

Allow_Supply_Fans

to trigger supply fans to

Yes No 48 BV

start

BMS_Watchdog_Active

BMS_Occupancy_

Status

Compressor_1_

Enable_Digital_Output

Compressor_2_

Enable_Digital_Output

Compressor_3_

Enable_Digital_Output

Status of the BMS

watchdog ping.

Status of the BMS

occupancy command.

Compressor 1 Enable

Digital Output

Compressor 2 Enable

Digital Output

Compressor 3 Enable

Digital Output

Active Inactive 49 BV

Occupied

Active Inactive 111 BV

Active Inactive 112 BV

Active Inactive 113 BV

INACTIVE

TEXT

OBJECT

INSTANCE

Binary Values - Read Only

Unoccupied

Locked_

Out

Locked_

Out

Locked_

Out

Unoccupied

16 BV

33 BV

34 BV

36 BV

50 BV

BACNET MODBUS

OBJECT

TYPE

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0 10002 Discrete

0 10003 Discrete

0 10004 Discrete

0 10005 Discrete

0 10006 Discrete

0 10007 Discrete

0 10008 Discrete

0 10009 Discrete

0 10010 Discrete

0 10011 Discrete

0 10012 Discrete

0 10013 Discrete

0 10014 Discrete

0 10015 Discrete

0 10017 Discrete

0 10018 Discrete

0 10019 Discrete

0 10020 Discrete

0 10022 Discrete

0 10023 Discrete

0 10029 Discrete

0 10030 Discrete

0 10034 Discrete

0 10035 Discrete

0 10036 Discrete

0 10164 Discrete

0 10165 Discrete

0 10166 Discrete

TYPE

SIZE

Microprocessor Controller for DOAS 47

VARIABLE DESCRIPTION

Compressor_4_

Enable_Digital_Output

Condenser_Fan_1_

Digital_Output

Condenser_Fan_2_

Digital_Output

Condenser_Fan_3_

Digital_Output

Exhaust_Fan_1_Start_

Stop_Digital_Output

Furnace_1_Stage_1_

Digital_Output

Furnace_2_Stage_1_

Digital_Output

Heat_Wheel_Enable_

Digital_Output

PreHeat_Enable_

Digital_Output

Supply_Fan_1_Start_

Stop_Digital_Output

BMS_Offline_Alarm.

Active

Cold_Coil_1_

Temperature_Sensor_

Alarm.Active

Comp_Maintenance_

Alarm.Active

Exhaust_Fan_1_Alarm.

Active

Expansion_Board_1_

Alarm.Active

Expansion_Board_2_

Alarm.Active

Expansion_Board_3_

Alarm.Active

Internal_Board_Temp_

Alarm.Active

Multi_Channel_Conf_

Alarm.Active

Outside_Air_

Temperature_Sensor_

Alarm.Active

Outside_Filter_Alarm.

Active

Outside_RH_Sensor_

Alarm.Active

Space_CO2_1_

Analog_Input_Alarm.

Active

Space_High_Static_

Alarm.Active

Space_RH_Sensor_

Alarm.Active

Space_Setpoint_

Slider_Alarm.Active

Space_Static_

Pressure_Analog_

Input_Alarm.Active

Space_Temperature_

Sensor_Alarm.Active

Shutdown_Input_

Alarm.Active

Supply_Air_Temp_

Low_Limit.Active

Compressor 4 Enable

Digital Output

Condenser Fan 1 Digital

Output

Condenser Fan 2 Digital

Output

Condenser Fan 3 Digital

Output

Exhaust Fan 1 Start Stop

Digital Output

Furnace 1 Stage 1 Digital

Output

Furnace 2 Stage 1 Digital

Output

Heat Wheel Enable Digital

Output

PreHeat Enable Digital

Output

Supply Fan 1 Start Stop

Digital Output

BMS Offline Alarm

(0=Normal 1=Alarm)

Cold Coil 1 Temperature

Sensor Alarm (0=Normal

1=Alarm)

Comp Maintenance Alarm

(0=Normal 1=Alarm)

Exhaust Fan 1 Alarm (0=Normal 1=Alarm)

Expansion Board 1 Alarm

(0=Normal 1=Alarm)

Expansion Board 2 Alarm

(0=Normal 1=Alarm)

Expansion Board 3 Alarm

(0=Normal 1=Alarm)

Internal Board Temp Alarm

(0=Normal 1=Alarm)

Multi Channel Conf Alarm

(0=Normal 1=Alarm)

Outside Air Temperature

Sensor Alarm (0=Normal

1=Alarm)

Outside Filter Alarm

(0=Normal 1=Alarm)

Outside RH Sensor Alarm

(0=Normal 1=Alarm)

Space CO2 1 Analog Input

Alarm (0=Normal 1=Alarm)

Space High Static Alarm

(0=Normal 1=Alarm)

Space RH Sensor Alarm

(0=Normal 1=Alarm)

Space Setpoint Slider Alarm

(0=Normal 1=Alarm)

Space Static Pressure

Analog Input Alarm

(0=Normal 1=Alarm)

Space Temperature Sensor Alarm (0=Normal 1=Alarm)

Shutdown Input Alarm

(0=Normal 1=Alarm)

Supply Air Temp Low Limit

Alarm (0=Normal 1=Alarm)

Appendix: Points List

ACTIVE

TEXT

Active Inactive 114 BV

Active Inactive 119 BV

Active Inactive 120 BV

Active Inactive 121 BV

Active Inactive 127 BV

Active Inactive 131 BV

Active Inactive 133 BV

Active Inactive 163 BV

Active Inactive 166 BV

Active Inactive 186 BV

Alarm Normal 313 BV

Alarm Normal 387 BV

Alarm Normal 411 BV

Alarm Normal 423 BV

Alarm Normal 434 BV

Alarm Normal 435 BV

Alarm Normal 436 BV

Alarm Normal 498 BV

Alarm Normal 503 BV

Alarm Normal 507 BV

Alarm Normal 508 BV

Alarm Normal 509 BV

Alarm Normal 535 BV

Alarm Normal 537 BV

Alarm Normal 538 BV

Alarm Normal 539 BV

Alarm Normal 540 BV

Alarm Normal 541 BV

Alarm Normal 546 BV

Alarm Normal 551 BV

INACTIVE

TEXT

OBJECT

INSTANCE

OBJECT

TYPE

BACNET MODBUS

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0 10167 Discrete

0 10172 Discrete

0 10173 Discrete

0 10174 Discrete

0 10180 Discrete

0 10184 Discrete

0 10186 Discrete

0 10208 Discrete

0 10211 Discrete

0 10231 Discrete

0 10264 Discrete

0 10338 Discrete

0 10362 Discrete

0 10373 Discrete

0 10384 Discrete

0 10385 Discrete

0 10386 Discrete

0 10448 Discrete

0 10453 Discrete

0 10457 Discrete

0 10458 Discrete

0 10459 Discrete

0 10485 Discrete

0 10487 Discrete

0 10488 Discrete

0 10489 Discrete

0 10490 Discrete

0 10491 Discrete

0 10496 Discrete

0 10501 Discrete

TYPE

SIZE

Microprocessor Controller for DOAS48

VARIABLE DESCRIPTION

Supply_Air_

Temperature_Sensor_

Alarm.Active

Supply_Duct_Static_

Pressure_Analog_

Input_Alarm.Active

Supply_Fan_1_Alarm.

Active

Supply_High_Duct_ Static_Alarm.Active

Supply_RH_Sensor_

Alarm.Active

Supply_Temp_High_

Limit_Alarm.Active

TMem_Error.Active

Wheel_Rotation_

Alarm.Active

Al_Batt_EVD_1.Active

Al_ConfigErr_EVD_1.

Active

Al_DscgHiP_COMP_1.

Active

Supply Air Temperature

Sensor Alarm (0=Normal

1=Alarm)

Supply Duct Static Pressure

Analog Input Alarm

(0=Normal 1=Alarm)

Supply Fan 1 Alarm

(0=Normal 1=Alarm)

Supply High Duct Static

Alarm (0=Normal 1=Alarm)

Supply RH Sensor Alarm

(0=Normal 1=Alarm)

Supply Temp High Limit

Alarm (0=Normal 1=Alarm)

TMem Error Alarm

(0=Normal 1=Alarm)

Wheel Rotation Alarm

(0=Normal 1=Alarm)

EVD Battery Alarm

(0=Normal 1=Alarm)

EVD Configuration Alarm

(0=Normal 1=Alarm)

Compressor Envelope -

High Discharge Pressure

Alarm (0=Normal 1=Alarm)

Compressor Envelope

Al_DscgHiTemp_

COMP_1.Active

- High Discharge

Temperature Alarm

(0=Normal 1=Alarm)

Al_DscgLowP_

COMP_1.Active

Al_EEPROM_EVD_1.

Active

Al_EEV_A_EVD_1.

Active

Al_EmergencyClosing_

EVD_1.Active

Al_EVD_Offline_

EVD_1.Active

Al_FW_CompatibErr_

EVD_1.Active

Al_HiCurr_COMP_1.

Active

Al_HiRatioP_COMP_1.

Active

Al_HiT_Cond_EVD_1.

Active

Al_IncompleteClosing_

EVD_1.Active

Al_LOP_A_EVD_1.

Active

Al_Low_SH_A_EVD_1.

Active

Al_LowDeltaP_ COMP_1.Active

Al_LowRatioP_ COMP_1.Active

Al_LowSuct_A_EVD_1.

Active

EVD Low Discharge

Pressure Alarm (0=Normal

1=Alarm)

EVD EEPROM Alarm

(0=Normal 1=Alarm)

ExV Motor Alarm - Valve 1

(0=Normal 1=Alarm)

EVD Emergency Closing

Alarm (0=Normal 1=Alarm)

EVD Offline Communication Alarm (0=Normal 1=Alarm)

EVD Firmware Compability

Alarm (0=Normal 1=Alarm)

Compressor Envelope

- High Current Alarm (0=Normal 1=Alarm)

Compressor Envelope -

High Pressure Ratio Alarm

(0=Normal 1=Alarm)

Al_HiT_Cond_EVD_1 (0=Normal 1=Alarm)

EVD Incomplete Closing

Alarm (0=Normal 1=Alarm)

EVD Low Operating

Pressure Alarm - Valve 1

(0=Normal 1=Alarm)

EVD Low SuperHeat

Alarm - Valve 1 (0=Normal

1=Alarm)

Compressor Envelope -

Low Pressure DeltaAlarm

(0=Normal 1=Alarm)

Compressor Envelope -

Low Pressure Ratio Alarm

(0=Normal 1=Alarm)

Low Suction Refrigerant

Temperature - Valve 1

(0=Normal 1=Alarm)

Appendix: Points List

ACTIVE

TEXT

Alarm Normal 552 BV

Alarm Normal 553 BV

Alarm Normal 554 BV

Alarm Normal 563 BV

Alarm Normal 564 BV

Alarm Normal 565 BV

Alarm Normal 567 BV

Alarm Normal 576 BV

Alarm Normal 589 BV

Alarm Normal 590 BV

Alarm Normal 591 BV

Alarm Normal 592 BV

Alarm Normal 593 BV

Alarm Normal 594 BV

Alarm Normal 595 BV

Alarm Normal 597 BV

Alarm Normal 598 BV

Alarm Normal 599 BV

Alarm Normal 600 BV

Alarm Normal 601 BV

Alarm Normal 602 BV

Alarm Normal 603 BV

Alarm Normal 604 BV

Alarm Normal 606 BV

Alarm Normal 608 BV

Alarm Normal 609 BV

Alarm Normal 610 BV

INACTIVE

TEXT

OBJECT

INSTANCE

OBJECT

TYPE

BACNET MODBUS

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0 10502 Discrete

0 10503 Discrete

0 10504 Discrete

0 10513 Discrete

0 10514 Discrete

0 10515 Discrete

0 10517 Discrete

0 10526 Discrete

0 10539 Discrete

0 10540 Discrete

0 10541 Discrete

0 10542 Discrete

0 10543 Discrete

0 10544 Discrete

0 10545 Discrete

0 10547 Discrete

0 10548 Discrete

0 10549 Discrete

0 10550 Discrete

0 10551 Discrete

0 10552 Discrete

0 10553 Discrete

0 10554 Discrete

0 10556 Discrete

0 10558 Discrete

0 10559 Discrete

0 10560 Discrete

TYPE

SIZE

Microprocessor Controller for DOAS 49

VARIABLE DESCRIPTION

Al_MOP_A_EVD_1.

Active

EVD Max Operating

Pressure Alarm - Valve 1

(0=Normal 1=Alarm)

EVD-S1 Suction Pressure

Al_S1_EVD_1.Active

Sensor Alarm (0=Normal

1=Alarm)

EVD-S2 Suction

Al_S2_EVD_1.Active

Temperature Sensor Alarm

(0=Normal 1=Alarm)

EVD-S4 Discharge

Al_S4_EVD_1.Active

Temperature Sensor Alarm

(0=Normal 1=Alarm)

Al_SuctHiP_COMP_1.

Active

Al_SuctLowP_

COMP_1.Active

Comp_Staging_Order_

Skipped.Active

EVD_PrePosition_

Alarm_1.Active

ER_Wheel_High_

DP.Active

Aux_BMS_Digital_

Output_1

Aux_BMS_Digital_

Output_2

Aux_BMS_Digital_

Output_3

Aux_BMS_Digital_

Output_4

Aux_BMS_Digital_

Output_5

Aux_BMS_Digital_

Output_6

Compressor Envelope -

SuctHiP_COMP (0=Normal

1=Alarm)

Compressor Envelope

- SuctLowP_COMP

(0=Normal 1=Alarm)

Compressor Staging

Order is Skipped Warning

(0=Normal 1=Alarm)

Unexpected EEV Position

(0=Normal 1=Alarm)

Energy Recovery Wheel

high differential pressure

(0=Normal 1=Alarm)

BMS Commanded auxilary

digital output

BMS Commanded auxilary

digital output

BMS Commanded auxilary

digital output

BMS Commanded auxilary

digital output

BMS Commanded auxilary

digital output

BMS Commanded auxilary

digital output

Startup Sequence Fan

Allow_Fan_Delay_

Remaining

Damper Delay. Time before

enabling Fan startup

sequence.

Supply_Fan_Delay_

Remaining

Exhaust_Fan_Delay_

Remaining

LatestAlm

Supply Fan startup

sequence. Time before

starting supply fan.

Exhaust Fan startup

sequence. Time before

starting exhaust fan.

Most recent alarm. See

alarm table.

Appendix: Points List

ACTIVE

TEXT

Alarm Normal 612 BV

Alarm Normal 614 BV

Alarm Normal 615 BV

Alarm Normal 617 BV

Alarm Normal 618 BV

Alarm Normal 619 BV

Alarm Normal 632 BV

Alarm Normal 634 BV

Alarm Normal 731 BV

Active Inactive 207 BV

Active Inactive 208 BV

Active Inactive 209 BV

Active Inactive 210 BV

Active Inactive 211 BV

Active Inactive 212 BV

INACTIVE

TEXT

OBJECT

INSTANCE

Binary Values - Commandable

Integer Values - Read Only

1IV

2IV

3IV

7IV

OBJECT

TYPE

BACNET MODBUS

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

Commandable

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0 10562 Discrete

0 10564 Discrete

0 10565 Discrete

0 10567 Discrete

0 10568 Discrete

0 10569 Discrete

0 10580 Discrete

0 10582 Discrete

0 10679 Discrete

0 24 Coil

0 25 Coil

0 26 Coil

0 27 Coil

0 28 Coil

0 29 Coil

1 30181 Input 2

1 30183 Input 3

1 30185 Input 4

1 30193 Input 5

TYPE

SIZE

Microprocessor Controller for DOAS50

VARIABLE DESCRIPTION

High_Low_Press_

Circ_A_Alarm.Active

High_Low_Press_

Circ_B_Alarm.Active

High_Low_Press_

Circ_C_Alarm.Active

High_Low_Press_

Circ_D_Alarm.Active

Greentrol_1_Alarm.

Active

Greentrol_2_Alarm.

Active

Greentrol_3_Alarm.

Active

Mixed_Temp_Analog_

Input

Exhaust_Fan_Speed_

Analog_Input

Supply_Fan_Speed_

Analog_Input

Comp_Circ_A_High_

Pressure_Digital_Input

Comp_Circ_A_Low_

Pressure_Digital_Input

Comp_Circ_B_High_

Pressure_Digital_Input

Comp_Circ_B_Low_

Pressure_Digital_Input

Drain_Pan_Alarm_

Digital_Input

EAD_End_Switch_

Digital_Input

OAD_End_Switch_

Digital_Input

High Low Pressure Switch

Alarm Circuit A

High Low Pressure Switch

Alarm Circuit B

High Low Pressure Switch

Alarm Circuit C

High Low Pressure Switch

Alarm Circuit D

Greentrol Device Alarm Alarm Normal 737 BV

Greentrol Device Alarm Alarm Normal 738 BV

Greentrol Device Alarm Alarm Normal 739 BV

Mixed Temperature 35 AI

Exhaust Fan Speed Remote

Command Analog Input

value

Supply Fan Speed Remote

Command Analog Input

value

Circuit A High Pressure

Switch

Circuit A Low Pressure

Switch

Circuit B High Pressure

Switch

Circuit B Low Pressure

Switch

Drain Pan Alarm Digital

Input Status

Exhaust Air Damper End

Switch Digital Input Status

OAD End Switch Digital

Input Status

Appendix: Points List

ACTIVE

TEXT

Alarm Normal 733 BV

Alarm Normal 734 BV

Alarm Normal 735 BV

Alarm Normal 736 BV

Active Inactive 3 BI

Active Inactive 4 BI

Active Inactive 5 BI

Active Inactive 6 BI

Active Inactive 21 BI

Active Inactive 22 BI

Active Inactive 52 BI

INACTIVE

TEXT

OBJECT

INSTANCE

Large Board Points

Binary Values - Read Only

Medium Board Points

Analog Inputs - Read Only

143 AI

155 AI

Binary Inputs - Read Only

OBJECT

TYPE

BACNET MODBUS

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0 10682 Discrete

0 10683 Discrete

0 10684 Discrete

0 10685 Discrete

0 10686 Discrete

0 10687 Discrete

0 10688 Discrete

0.1 30263 Input 2

1 30455 Input 2

1 30461 Input 2

0 10052 Discrete

0 10053 Discrete

0 10054 Discrete

0 10055 Discrete

0 10070 Discrete

0 10071 Discrete

0 10101 Discrete

TYPE

SIZE

Microprocessor Controller for DOAS 51

VARIABLE DESCRIPTION

Condenser_Fan_4_

Digital_Output

Condenser_Fan_5_

Digital_Output

Condenser_Fan_6_

Digital_Output

Condenser_Fan_7_

Digital_Output

Condenser_Fan_8_

Digital_Output

Comp_Circ_A_High_

Pressure_Alarm.Active

Comp_Circ_A_Low_

Pressure_Alarm.Active

Comp_Circ_B_High_

Pressure_Alarm.Active

Comp_Circ_B_Low_

Pressure_Alarm.Active

Damper_End_Switch_

Alarm.Active

Drain_Pan_Alarm.

Active

Exhaust_Fan_1_AMD_

analog_input_Alarm.

Active

Freeze_Stat_Alarm.

Active

Mixed_Temperature_

Sensor_Alarm.Active

OAD_AMD_analog_

input_Alarm.Active

Condenser Fan 4 Digital

Output

Condenser Fan 5 Digital

Output

Condenser Fan 6 Digital

Output

Condenser Fan 7 Digital

Output

Condenser Fan 8 Digital

Output

Comp Circ A High Pressure Alarm (0=Normal 1=Alarm)

Comp Circ A Low Pressure

Alarm (0=Normal 1=Alarm)

Comp Circ B High Pressure Alarm (0=Normal 1=Alarm)

Comp Circ B Low Pressure

Alarm (0=Normal 1=Alarm)

Damper End Switch Alarm

(0=Normal 1=Alarm)

Drain Pan Alarm (0=Normal

1=Alarm)

Exhaust Fan 1 CFM Analog

Input Alarm (0=Normal

1=Alarm)

Freeze Stat Alarm

(0=Normal 1=Alarm)

Mixed Temperature Sensor Alarm (0=Normal 1=Alarm)

OAD CFM Analog Input

Alarm (0=Normal 1=Alarm)

Appendix: Points List

ACTIVE

TEXT

Active Inactive 122 BV

Active Inactive 123 BV

Active Inactive 124 BV

Active Inactive 125 BV

Active Inactive 126 BV

Alarm Normal 395 BV

Alarm Normal 396 BV

Alarm Normal 397 BV

Alarm Normal 398 BV

Alarm Normal 420 BV

Alarm Normal 422 BV

Alarm Normal 424 BV

Alarm Normal 441 BV

Alarm Normal 502 BV

Alarm Normal 506 BV

INACTIVE

TEXT

OBJECT

INSTANCE

Binary Values - Read Only

OBJECT

TYPE

BACNET MODBUS

ACCESS HYST INDEX

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

ReadCOV_

NoWrite

0 10175 Discrete

0 10176 Discrete

0 10177 Discrete

0 10178 Discrete

0 10179 Discrete

0 10346 Discrete

0 10347 Discrete

0 10348 Discrete

0 10349 Discrete

0 10371 Discrete

0 10372 Discrete

0 10374 Discrete

0 10391 Discrete

0 10452 Discrete

0 10456 Discrete

TYPE

SIZE

Microprocessor Controller for DOAS52

Appendix: Factory ModBus Connections

TERM

SHIELDED CABLE

PWR

GND

PWR

GND

J24

GND

UNIT CONTRO LLER

NETB

NETA

TxRx+

J26

GND

SHIELDED

CABLE

I/O EXPANSION FURNACE 1

Tx-

COMPONENTS FIELD MOUNTED AND WIRED IN ROOM/S PACE

ROOM THERMOSTAT 1 ROOM THERMOST AT 2 ROOM THERMOST AT 3

PWR

(OPTIONAL) (OPTIONAL) (OPTIONAL) (OPTIONAL)

NET

GND

SHIELDED CABLE

PWR

NET

GND

SHIELDED

CABLE

SHIELDED

CABLE

SHIELDED

CABLE

Rx+

GND

+ COM

(OPTIONAL) (OPTIONAL) (OPTIONAL) (OPTIONAL) (OPTIONAL)

COMPONENTS MOUNTED AND WIRED BY FACTORY

MAIN UNIT CONTROL CENTER

MONITORI NG 1

AIRFLOW

MONITORI NG 2

AIRFLOW

FACTORY MODBUS CONNECTIONS

SHIELDED CABLE

INVERTER EEV

Tx-

(OPTIONAL)

Rx+

PWR

NET

GND

SHIELDED CABLE

ROOM THERMOSTAT 4

PWR

NET

GND

DRWG:2948063-00

GND

SHIELDED

CABLE

Tx-

FURNACE CONTROL CENTER

Rx+

SHIELDED

CABLE

GROUND

SNIPPED

SHIELD

GND

Tx-

Rx+

FURNACE 2

GND

FACTORY WI R ING

FIELD WIRING

SHIELDED

CABLE

SERVICE COMPARTMEN

INVERTER DRIVE

COMPRESSOR

(OPTIONAL)

REFRIGERATION

RS485

Microprocessor Controller for DOAS 53