Atlas Metal DDC Installation Manual

Page 1

READ AND SAVE THESE INSTRUCTIONS

Installation, Operation and Maintenance Manual

MANEUVERING THROUGH THE CONTROLLER

The DDC controller is located in the control panel on the energy recovery unit. The face of the DDC controller has six buttons allowing the user to perform various tasks such as viewing conditions or changing set points. A brief description of the six buttons is provided. For additional details, refer to the page references included. Prior to accessing the controller, confirm the functions that were provided with

the unit by referencing the DDC Code shown

Greenheck Fan Corp.

ER DDC v3.##

Code: GY2X000B

on the controller Start-Up screen.

The Start-Up screen appears when power is applied to the controller. The program version and code are shown on this screen. The code shows the user what components and functionality were provided with the unit and also dicates how the program operates. Below is a description of the code.

PART #469690

DDC CONTROLLER

for ENERGY RECOVERY

Name Heat Cool HGRH Frost Economizer

GY 2 X 0 0 0 B

GFC G None – Disable X None – Disable X None – Disable X None – Disable 0 None – Disable 0 None – Unit Off 0 None X

Enable Y CW C On/Off A Timed Off 1 On/Off 1 Cycle on Room 1 Modbus M

PDx 1 stg 1 Mod B Preheat 2 Modulating 2 LON L

PDx 2 stg 2 Modulating 3 BACNet B

GFC Enable PDx 2 stg None – Disable None – Disable None – Disable None – Unit Off BACNet

Description Reference

Alarm

Up Arrow

Down Arrow

Enter

Escape

Indicates both visually on the controller (the button lights up) and to the Building Management Systems (BMS) (field-wired) that something is not functioning normally.

The arrow keys allow the user to scroll through different screens and adjust parameters.

A. In screens with adjustable parameters, pressing the Enter key moves the cursor

from the upper left corner of the screen to the parameter. The arrow keys can

then be used to adjust the parameter. B. To move to the next parameter on the same screen, press the Enter button. C. To save the change, press the Enter button until the cursor moves back to the

upper left corner of the screen.

Allows the user access to the Main Menu. The following adjustments can be made:

• Unit Status

• Set Points

• Manual Overrides

• Analog & Digital Input/Output Setup

• Time Clock Setup

• Miscellaneous Information

• Unit On/Off

UnOccupied

Mode

Communications

Page 3

Page 4

Program Allows the user access to the Program Menu

NOTE: If this controller needs to be interfaced with a BMS (ie: Lonworks, BACnet or Modbus), please refer to page 23 for an integration points list.

Page 17

Page 2

24 VAC to Controller

DDC Controller for Energy Recovery

Outdoor Air Intake Temperature Sensor

Supply Discharge Temperature Sensor

Cold-Coil Temperature Sensor

Sensor B1, B2, B3 Commons

Room Temperature Sensor

or Digital Call for Cool

Humidistat

24 VAC for Analog Outputs

Analog Output to Energy Wheel

Analog Heating Output (HW or Electric)

Analog Cooling Output (CW)

Hot Gas Reheat Analog Output

Supply Fan Proving

Wheel Pressure

Wheel Rotation Alarm

Unit On/Off

Exhaust Fan Proving

Occupied/Unoccupied Input

Dirty Filter

Compressor Limit

Analog Sensor Inputs Analog Outputs Digital Inputs

Digital Outputs

24 VAC When Unit On

Frost Control Enable

Output to Supply Fan

Output to Exhaust Fan

24 VAC from Supply Fan Proving

Heating Enable (IG or Electric)

Call For Cooling

24 VAC

Output to Dampers

Alarm

Dry Contact

Page 3

UNIT SET POINTS

Example of parameter adjustment

The cursor always begins in the upper left corner of the display.

__Supply air low limit alarm when supply is less than:

35.0°F Alarm delay: 030s

Supply air low limit alarm when supply is less than:

32.0°F Alarm delay: 030s

__Supply air low limit alarm when supply is less than:

32.0°F Alarm delay: 030s

If an alarm occurs, the controller (if enabled).

**ALARM** B1 SENSOR ERROR OUTSIDE TEMPERATURE ALARMED@-hr:min.mm/dd

…ALARM OPTIONS… Press UP to review. Press Esc to exit. Press ALARM to RESET

Use the up and down buttons to scroll through the display screens. The cursor must be in the upper left corner of the display to scroll through the screens.

Press

Use the cursor to the next parameter, or to the upper left corner.

When finished, make certain the cursor is in the upper left corner. If the cursor is not in the upper left corner, the changes made will not be saved. (The cursor must be in the upper left corner to enable screen advancement).

to move the cursor down for parameter adjustment.

keys to adjust the parameter up or down. Press to move the

Example of alarms

buttom will glow red, and a buzzer will sound if a remote display panel is connected to the

Step 1: Press the Alarm button once. This will disable the buzzer and

display which alarms have occurred.

Step 2: Scroll down through the alarm screens if more than one has occurred.

Use the arrow buttons or alarm button to scroll through the alarms. Step 3: Note which alarms occurred and at what time. Step 4: Scroll down until the “Alarm Options” screen is displayed.

Step 5: Press the Esc button to exit without resetting the alarms.

In this mode the unit will remain operational, as long as the alarm is

non-fatal. Non-fatal alarms = dirty filters, sensor failure…

Fatal alarms = airflow loss…

Step 6: Press the Alarm button to reset the alarms. If the alarm button

stops glowing red, the alarm has been cleared. No action is required.

(Sometimes a sensor can jump out of range for a short period of time,

causing an alarm. The sensor is probably OK, as long as the sensor

does not continually alarm and the displayed value looks reasonable). Step 7: If the alarm signals again, the problem still exists and action needs to

be taken. Fix the condition that has caused the alarm.

List of possible alarms

SUPPLY AIR AL: Indicates a loss of airflow in the supply fan Alarm & Shutdown

EXHAUST AIR AL: Indicates a loss of airflow in the exhaust fan Alarm & Shutdown

DIRTY WHEEL AL: Indicates a buildup of pressure across the energy recovery wheel Alarm

WHEEL ROTATION AL: Indicates a wheel rotation failure Alarm DIRTY FILTER AL: Indicates a buildup of pressure across the filters Alarm COMPRESSOR TRIP AL: Indicates a high or low refrigerant pressure Alarm & Compressor Shutdown AC LOCKOUT AL: Indicates either the low pressure or high pressure switch are open Alarm & Compressor Shutdown

SUPPLY LOW LIMIT AL:

MB1 FAIL: Indicates a failure of the outside air temperature sensor Alarm MB2 FAIL: Indicates a failure of the supply air temperature sensor Alarm

MB3 FAIL: Indicates a failure of the after cooling coil air temperature sensor Alarm

Indicates a discharge temperature lower than the supply low limit set point

Alarm & Shutdown

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MAIN MENU / ESC BUTTON

Access the Main Menu by pressing the key. Scroll through the menu screens using the keys. All controller menus are accessed through the Main Menu. See below for description of each menu. Refer to the page

references for additional details about each menu. For details on the Program Menu, see page 17.

SCREEN DESCRIPTION ADDITIONAL INFORMATION

Press (ENTER) to go to *UNIT STATUS* menu. Press (down) for more menu options.

Press (ENTER) to go to *SET POINTS* menu. Press (up or down) for more menu options.

Press (ENTER) to go to *OVERRIDES* menu. Press (up or down) for more menu options.

Press (ENTER) to go to *I/O SETUP* menu. Press (up or down) for more menu options.

The UNIT STATUS menu allows the user to view real time conditions of the unit. Conditions that are displayed include:

• Temperature Sensors • Reheat • Compressors

• Fan Operation • Heating • Preheater

• Energy Recovery Wheel Operation • Cooling

For additional information, please refer to page 5

The SET POINTS menu allows the user to make adjustments to set points. The adjustable set points relate to:

• Heating • Economizer Mode

• Cooling • Supply Air Low Limit

• Dehumidification • Wheel Defrost

The factory programmed default settings may need to be adjusted to achieve optimum performance for the specific application.

For additional information, please refer to page 7

The OVERRIDES menu is for start-up/commissioning and troubleshooting the unit. Components that can be overriden within the system are:

• Frost Control Preheater • Energy Wheel

• Heating • Hot Gas Reheat

• Cooling

For additional information, please refer to page 10

The I/O SETUP menu allows the user to view the status of the digital and analog inputs and outputs of the DDC controller. In addition, adjustments can be made to recalibrate sensors and change input and output parameters.

For additional information, please refer to page 12

Press (ENTER) to go to *CLOCK SETUP* menu. Press (up or down) for more menu options.

Press (ENTER) to go to *MISC INFO* menu. Press (up or down) for more menu options.

Press (ENTER) to go to *UNIT ON/OFF* menu. Press (up or down) for more menu options.

- - End of MAIN MENU - -

Hrs:min:sec

month/day/year

The CLOCK SETUP menu shows the settings for the internal time clock. The Clock Setup menu is capable of:

• Setting up occupied / unoccupied modes

• Adjusting the time and date For additional information, please refer to page 15

The MISC INFO menu displays the version of the program and the DDC Code programmed. The DDC Code provides details of how the unit was ordered and intended to operate. Both the program version and the DDC Code are required when contacting the factory for assistance.

For additional information, please refer to page 16

The UNIT ON/OFF menu allows the user to turn the unit on and off from the controller.

For additional information, please refer to page 16

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UNIT STATUS MENU

Access the UNIT STATUS menu through the Main Menu. Scroll through the menu screens using the keys. Screens with a dashed line border are dependent upon an optional accessory and may not

always appear.

“STATUS LINE”

System Status hr:min:sec mm/dd/yyyy

“STATUS LINE” Outside: 000. 0º F Supply: 000. 0º F Cold Coil: 000. 0º F

“STATUS LINE” Room: 000. 0º F

“STATUS LINE”

Supply Fan:On Exhaust Fan:On

THE STATUS LINE DISPLAYS WHICH MODE THE UNIT IS IN.

Possible modes include: A. Initial Delay J. Sys On-Dehumidifying B. Opening Dampers K. Sys On-Dehum & Reheat C. Exhaust Fan Starting L. Unoccupied-Unit Off D. Supply Fan Starting M. Unoccupied-Heating E. System On N. Unoccupied-Cooling F. Defrost Mode Active O. Manual Override!! G. Sys On-Economizer P. Remote Off H. Sys On-Heating Q. Press Alarm Button! I. Sys On-Cooling

THE TEMPERATURES ON THIS SCREEN DISPLAY REAL-TIME CONDITIONS FROM THE

SENSORS IN THE UNIT.

After a period of inactivity (approximately 3 minutes), the controller will revert to this screen.

THE TEMPERATURE ON THIS SCREEN REPRESENTS THE REAL-TIME CONDITIONS

BASED ON THE SENSOR IN THE ROOM.

This screen only appears if the room supply temp reset sensor is wired into B4 and BC4 on the controller.

THE CONTROLLER DISPLAYS THE RETURN SIGNAL THAT IS BEING RECEIVED FROM

THE SUPPLY AND EXHAUST FAN S.

On indicates the fan is running. In most modes of operation, both fans will be On. There are three modes in which one fan may be Off while the other is On. 1) Start-up of the unit, 2) Timed exhaust frost control, and 3) Unoccupied, 100% return air mode. Other than these three modes, if one fan is Off and the other is On, there may be a problem.

“STATUS LINE” Energy Recovery Wheel: 000% Speed

“STATUS LINE” Cooling Control:000%

Compressor: ##

ENERGY RECOVERY WHEEL OPERATION IS DISPLAYED AS A PERCENT.

If the unit does not contain a VFD on the wheel motor, then 0% = OFF; 100% = ON. If the unit contains a VFD to modulate the wheel speed for frost control or economizer operation, this screen will display the percentage directly proportional to the 0-10 VDC signal being sent to the wheel VFD 0 VDC = 000%, 10 VDC = 100% To override: ‘MANUAL OVERRIDE’ menu >Energy Recovery Wheel Override

THIS SCREEN DISPLAYS THE COOLING CONTROL AS A PERCENTAGE.

This screen only appears if a cooling option is provided.

Chilled Water Coil: The Loop Output % is directly proportional to a 0-10 VDC signal 000% = 0 VDC - Full Closed; 100% = 10 VDC - Full Open 000% = 2 VDC - Full Closed; 100% = 10 VDC - Full Open

The cooling control valve can either be 0-10 VDC or 2-10 VDC depending upon the valve installed. The user may need to adjust the I/O SETUP menu so that 0-100% cooling correlates with a 2-10 VDC signal (0-10 VDC is default).

To adjust: ‘I/O SETUP’ menu> Analog Output Y3

DX Coil: Cooling Control displays compressor engagement as a percent

• 000% Compressors OFF (1 or 2 compressor system)

• 050% First compressor ON (2 compressor system)

• 100% First & second compressor ON (2 compressor system) First compressor ON (1 compressor system)

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UNIT STATUS MENU - continued

“STATUS LINE” Cooling Control:000%

Compressor: ##

“STATUS LINE” Hot Gas Reheat:000% Heater Control:000%

THIS SCREEN DISPLAYS THE COOLING CONTROL AS A PERCENTAGE (CONTINUED)

The Compressor line indicates which compressor is ON 1 First compressor 2 Second compressor 1 2 Both compressors To override: ‘MANUAL OVERRIDE’ menu >Cooling Loop Override

THIS SCREEN DISPLAYS THE CURRENT REHEAT AND HEAT OPERATION OF THE UNIT.

Hot Gas Reheat only appears if provided with unit.

Hot Gas Reheat operation is on/off control displayed as a percent. 100% is ON and 000% is OFF To override: ‘MANUAL OVERRIDE’ menu >Hot Gas Reheat Override

For Modulating Hot Gas Reheat Control: 000% is OFF and 001% HGRH is ON and the airflow damper is modulating between 4 VDC and 10 VDC.

Heater Control displays the real-time percent heater output and is directly proportional to a 0-10 VDC signal provided by the discharge temperature sensor. To override: ‘MANUAL OVERRIDE’ menu >Heating Loop Override

Electric Heater: The Heater Control % is directly proportional to a 0-10 VDC signal being sent to the SCR controller in the electric heater’s control center. 000% = 0 VDC = 0 kW output 100% = 10 VDC = Maximum kW output

Indirect Gas Furnace: The Heater Control % is directly proportional to a 0-10 VDC signal being sent to the indirect gas furnace control board. The first stage is full ON at a 1% Heater Control. Once the Heater Control reaches 50%, the second stage modulates between 50% and 100% output. 001 – 049% First stage: ON, Second stage: OFF 050 – 100% First stage: ON, Second stage: Modulating between 50% and 100% output

Hot Water Heater: The heating control valve (supplied by others) can either be 0-10 VDC or 2-10 VDC depending upon what valve is installed. The user may have to adjust the ‘I/O SETUP’ menu so that a 0-100% heating correlates with a 2-10 VDC signal (0-10 VDC is default).

“STATUS LINE” Energy recovery wheel differential pressure is: Normal

“STATUS LINE” Preheat heater: OFF

End of status menu

To adjust: ‘I/O SETUP’ menu >Analog Output Y2

THE UNIT CONTAINS A WHEEL PRESSURE DROP SENSOR TO INDICATE WHETHER

THE PRESSURE ACROSS THE WHEEL IS NORMAL OR HIGH.

This screen only appears if a frost control method was provided.

A status of High is an indication of frost accumulation. The pressure set point is adjustable on the wheel pressure switch.

THIS SCREEN INDICATES WHETHER THE ELECTRIC PREHEAT FROST CONTROL IS ON

OR OFF.

This screen only appears if Electric Preheat frost control was provided.

To override: ‘MANUAL OVERRIDE’ menu >Energy Recover y Wheel Preheater

Page 7

Outdoor Air Reset Function

55°

57°

59°

61°

63°

65°

67°

69°

71°

73°

55° 60° 6 5° 70° 75°

Outside Air Temperature (°F)

Discharge Temperature (°F)

SET POINTS MENU

Access the SET POINTS menu through the Main Menu. Scroll through the menu screens using the keys.

***ACCESS DENIED***

Enter Password:0000 WRONG PASSWORD

Unit Set Points

Supply set pt is currently=###.#ºF This set pt is reset up/down by the DDC.

THIS SCREEN CAN BE LOCKED TO PREVENT TAMP ERI NG WITH THE SETTINGS. FROM THE FACTORY, ACCESS IS NOT PASSWORD PROTECTED TO ALLOW QUICKER

START-UP.

To set the password, go to the ‘PROGRAM’ menu by pressing the button. Once there, scroll down until you arrive at the Change Password screen. The ‘Level 1’ password protects the ‘SET POINTS’ menu.

THIS SCREEN DISPLAYS THE CURRENT DISCHARGE SET POINT FOR THE UNIT,

WHICH IS THE TEMPERATURE THE UNIT IS TRYING TO DISCHARGE.

If there is no room temperature sensor (nothing wired to terminals B4 and BC4 on controller), the controller changes the supply air discharge temperature of the unit based on the outdoor air temperature (refer to outdoor air reset function below). With no room temperature sensor, a BMS can override the controller and input directly the desired supply temperature for the unit. If a room temperature sensor is connected to terminals B4 and BC4 on the DDC controller, then the supply temperature of the unit is adjusted based on the difference between the actual room temperature (reading from the room temperature sensor) and the desired room temperature which is programmed into the controller (refer to Room Set Point screen below). With a room temperature sensor connected to the controller, a BMS can override the controller and input directly the desired room set point. This new desired room set point will be used for comparing with the actual room temperature. To activate the BMS override temperatures, refer to the Program Menu and change the Set Point Source screen to BMS Interface.

Supply Air Reset

Outside Supply

060.0ºF ---> 072.0ºF

070.0ºF ---> 060.0ºF

THESE PA RAMETERS DICTATE THE OPERATION OF THE OUTDOOR AIR RESET

FUNCTION IN THE CONTROLLER.

This screen does not appear when the room supply temp sensor is wired into terminals B4 and BC4 on the controller.

The unit monitors the outdoor air temperature and adjusts the desired supply temperature accordingly. For example, when the outdoor air is below 60.0ºF, the controller will change the Supply set pt to 72.0ºF. If the outdoor air is above 70.0ºF, the controller would change the Supply set pt to 60.0ºF. If the outdoor air temperature is between 60.0ºF and 70.0ºF, the Supply discharge temperature changes according to the outdoor air reset function. A visual representation of the outdoor air reset function is shown.

Desired Supply Temperature

72.0°F

Desired Supply Temperature

60.0°F

Page 8

SET POINTS MENU - continued

Room Set Point

Local set pt:72.0ºF

Supply Reset Limits Supply Min:055.0ºF Supply Max:090.0ºF

Cold coil set point Normal Mode:55.0ºF Dehumidify:50.0ºF Active set pt:55.0ºF

THIS SCREEN DISPLAYS THE SPACE TEMPERATURE SET POINT.

This screen only appears if the room supply temp sensor is wired into terminals B4 and BC4 on the controller.

The unit will reset the unit discharge temperature up and down to maintain the local set point. If a BMS is interfaced with the controller, the user has the capability to dictate the desired Room set point through the BMS. The screen will show a BMS set point and an Active set point. The Active set point is the room temperature the controller is currently tr ying to maintain.

THIS SCREEN DISPLAYS THE MINIMUM AND MAXIMUM SUPPLY AIR TEMPERATURE.

This screen only appears if the room supply temp sensor is wired into terminals B4 and BC4 on the controller.

The supply air temp will integrate SLOWLY down (Pl loop) towards this minimum set point to maintain room temperature. The supply air temp will integrate SLOWLY up (PI loop) towards this maximum set point to maintain room temperature.

THIS SCREEN DISPLAYS THE TEMPERATURE SET POINTS FOR THE COOLING COILS.

This screen only appears if a Cooling option was provided with the unit.

The Normal Mode set point is the after coil temperature the unit will maintain under standard operation. If a Humidistat was provided with the unit, the Dehumidify set point is the temperature the cooling coil will discharge on a call for dehumidification from a humidistat.

The Active set pt is the temperature that the unit is currently trying to maintain off the coil.

Unit will energize to maintain unocc room set points. Differential:5.0ºF

Unoccupied room set point Heating:65.0ºF Cooling:85.0ºF

THIS SCREEN DISPLAYS THE DIFFERENTIAL SET POINT FOR THE HEATING AND

COOLING MODES.

This screen only appears if the 7th character in the DDC Code is set to 1, meaning the “Cycle on Room” unoccupied mode was chosen. Operation in “Cycle on Room” unoccupied mode requires the room sensor be wired into terminals B4 and BC4 , and a night setback damper in the unit.

This differential acts as a hysteresis to keep the heating and cooling from cycling too often. For example, on a call for heating (room temp. set point - differential, 65.0ºF-

5.0ºF=60.0ºF) supply fan cycles on. Unit cycles off when the room temperature reaches the Unoccupied room set point (65.0ºF, adjustable). For cooling, the differential is added to the Unoccupied room set point (85.0ºF+5.0ºF=90.0ºF) to cycle supply fan on. Unit cycles off when the room temperature reaches Unoccupied room set point (85.0ºF).

THIS SCREEN DISPLAYS THE ROOM SET POINTS WHICH DICTATE THE UNIT HEATING

AND COOLING OPERATION DURING UNOCCUPIED MODE.

This screen only appears if the “Cycle on Room” unoccupied mode was chosen for the unit. A room sensor temp. must be wired into terminals B4 and BC4 on the controller, and the unit must have a night setback damper.

In Unoccupied Mode when the temperature falls below the room Heating set point (hysteresis = 5ºF), the supply fan and unit heating will turn on. Unit will discharge the Supply Max temperature per the ‘Supply Reset Limits’ screen above until the room set point is satisfied. Unit will then shut down. In Unoccupied Mode when the temperature rises above the Cooling set point (hysteresis = 5ºF), the supply fan and unit cooling will turn on. Unit will discharge the Supply Min temperature per the ‘Supply Reset Limits’ screen above until the room temperature set point is satisfied. Unit will then shut down.

Heater Lockout Lockout heater when outside air >:70.0ºF Hysteresis=02.0ºF

THIS CONTROLLER WILL LOCK THE HEATING SECTION OFF WHEN THE OUTDOOR AIR

TEMPERATURE IS ABOVE THE SET POINT (FACTORY DEFAULT = 70ºF).

This screen only appears if a Heating option was provided with the unit.

A Hysteresis of 2ºF helps to avoid short cycling of the heater. The hysteresis is similar to a deadband above and below the Lockout heater set point. (Example: If Lockout = 70ºF, heating is locked out for outside air conditions above 72ºF and enabled below 68ºF).

Page 9

SET POINTS MENU - continued

Cooling Lockout Lockout cooling when outside air <:55.0ºF Hysteresis=02.0ºF

Lockout dehumidification until outside air is:10.0ºF above cold coil set point

Economizer Lockout Lockout econo when outside air <:40.0ºF Hysteresis=02.0ºF

THIS CONTROLLER WILL LOCK THE COOLING SECTION OFF WHEN THE OUTDOOR AIR

TEMPERATURE IS BELOW THE COOLING LOCKOUT SET POINT

(FACTORY DEFAULT = 55ºF).

This screen will only appear if Cooling was provided with the unit.

There is a built in hysteresis of 2ºF which prevents the compressors from short cycling. The hysteresis is similar to a deadband above and below the lockout set point. (Example: If Lockout = 55ºF, cooling is locked out below 53ºF and end enabled above 57ºF outside air temp).

THIS SCREEN DISPLAYS THE TEMPERATURE DIFFERENCE AT WHICH THE

DEHUMIDIFICATION ON THE UNIT IS LOCKED OUT (FACTO RY DEFAULT = 10ºF).

This screen will only appear if cooling was provided with the unit.

This setting prevents the unit from operating in dehumidification mode when outdoor air conditions are relatively cool. For example, if the cold coil set point is 55ºF, dehumidification mode cannot operate until the outdoor air is at least 65ºF.

ECONOMIZER LOCKOUT PREVENTS THE UNIT FROM GOING INTO ECONOMIZER

MODE WHEN OUTDOOR AIR CONDITIONS ARE TOO COLD.

This screen only appears if economizer was provided with the unit.

The lockout prevents outdoor air from 1) entering the space at too cold of a temperature or 2) entering heating and cooling coils at conditions that could freeze the coils. Built-in hysteresis of 2ºF. The hysteresis is similar to a deadband above and below the lockout set point. (Example: If Lockout = 40ºF, economizer is locked out below 38ºF and enabled above 42ºF outside air temp)

Supply air low limit alarm when supply is less than: 35.0ºF Alarm delay:300s

Defrost Allow wheel defrost mode when outside is less than: 05.0ºF

End of Set Points

THIS SCREEN DISPLAYS WHAT THE LOW TEMPERATURE LIMIT IS FOR THE UNIT.

If the unit supply discharge temperature falls below Supply Air Low Limit set point (factory default 35F) for a period of time (factory default 300 sec) the unit will shut down and an alarm will be signaled. The purpose of the Discharge Freeze Protection is to protect the building and contents from low temperature supply air. It is NOT designed to protect the Energy Recovery unit.

If the Energy Recovery unit does not have CW or HW coils (has only no heat, IG heat, electric heat, no cooling, or Dx cooling) it should not need additional protection from freezing. If the Energy Recovery unit does have CW or HW coils, please contact the factory for more details.

THIS SCREEN DISPLAYS THE TEMPERATURE AT WHICH THE UNIT WILL BEGIN FROST

CONTROL MODE.

This screen only appears if a frost control method was provided with the unit.

The energy wheel transfers both latent and sensible energy at relatively similar efficiencies. Therefore, in most applications where indoor mositure levels are below 35% RH, frost typically will not occur on the energy wheel until outdoor air temperatures are below 5ºF. Consult the factory if you have any concerns regarding your specific application.

Page 10

MANUAL OVERRIDE MENU

Access the OVERRIDES menu through the Main Menu. Scroll through the menu screens using the keys.

***ACCESS DENIED***

Enter Password:0000 WRONG PASSWORD

Manual override of control loops (Unit must be ON)

Energy recovery wheel override Wheel:AUTO Wheel:OFF

Energy recovery wheel override Wheel:AUTO % Speed:000%

THIS SCREEN CAN BE LOCKED TO PREVENT TAMP ERI NG WITH THE SETTINGS. FROM THE FACTORY, ACCESS IS NOT PASSWORD PROTECTED TO ALLOW QUICKER

START-UP.

To set the password, go to the ‘PROGRAM’ menu by pressing the button. Once there, scroll down until you arrive at the Change Password screen. The ‘Level 1’ password protects the ‘OVERRIDES’ Menu.

THE OVERRIDE MENU IS USED FOR MANUAL OVERRIDE OF THE CONTROL LOOP.

To manualy override a function, change the status “AUTO” to “MANUAL”.

THE USER CAN OVERRIDE THE ENERGY RECOVERY WHEEL OPERATION.

This screen only appears if there is not a VFD operating the energy wheel.

When the wheel is in MANUAL mode, use the arrow buttons to turn the wheel ON or OFF.

THE USER CAN OVERRIDE THE ENERGY RECOVERY WHEEL OPERATION.

This screen only appears if the Modulating Wheel Frost Control or Modulating Wheel Economizer was provided with the unit.

When the wheel is in MANUAL mode, use the arrow buttons to change the % Speed to vary the wheel rotational speed. The % Speed is directly proportional to a 0-10V signal being sent to the energy wheel VFD.

Cooling loop override. Cooling:AUTO Loop output:000%

THE USER CAN OVERRIDE THE COOLING LOOP OPERATION.

This screen only appears if a cooling option was provided with the unit.

When the cooling loop override is in MANUAL mode, use the arrow buttons to vary the % output.

Chilled Water Coil: Loop Output % is directly proportional to a 0-10 VDC or 2-10 VDC signal. 000% = 0 VDC = Full Closed; 100% = 10 VCD = Full Open 000% = 2 VDC = Full Closed; 100% = 10 VCD = Full Open

2 Stage DX Coil: Loop Output displays compressor engagement as a percent. 000% Compressor OFF 050% First Compressor ON 100% First & Second Compressor ON Second stage will NOT disengage until Loop Output is below 50% First stage will NOT disengage until Loop Output is 0%

1 Stage DX Coil: Loop Output displays compressor engagement as a percent. 000% Compressor OFF 100% Compres sor ON In a single stage DX cooling system, the compressor engages when the Loop Output is 100%. Once the compressor is engaged, it will not disengage until the Loop Output is 0%.

Note: Damage can occur to compressors from short-cycling, therefore the controller has built-in time delays which are effective upon each engagement of a compressor.

Page 11

MANUAL OVERRIDE MENU - continued

Heater loop override. Heating:AUTO Loop output:000%

Hot gas reheat loop override Hot gas: AUTO Hot gas: OFF

THE USER CAN OVERRIDE THE HEATING OPERATION.

This screen only appears if a Heating option was provided with the unit.

To manually override the heating, adjust the Heating status from AUTO to MANUAL. When the Heating loop override is in MANUAL mode, use the arrow buttons to vary the % output.

Hot Water Coil: The Loop Output % is directly proportional to a 0-10 VDC or 2-10 VDC signal being set to the hot water valve. 000% = 0 VDC = Full Closed; 100% = 10 VDC = Full Open 000% = 2 VDC = Full Closed; 100% = 10 VDC = Full Open

Electric Heater: The Loop Output % is directly proportional to a 0-10 VDC signal being sent to the SCR controller in the electric heater’s control center. 000% = 0 VDC = 0 kW output 100% = 10 VDC = Maximum kW output

Indirect Gas Furnace: The Heater Control % is directly proportional to a 0-10 VDC signal being sent to the indirect gas furnace control board. Where the first stage is full ON at a 1% Heater Control. Once the Heater Control reaches 50%, the second stage modulates between 50% and 100% output. 001% - 049%: First stage: ON, Second stage: OFF 050% - 100% First stage: ON, Second stage: Modulating between 50% and 100% output

THE USER CAN OVERRIDE THE HOT GAS REHEAT OPERATION.

This screen only appears if the On/Off Hot Gas Reheat option was provided with the unit.

To manually override the Hot gas reheat loop, adjust the Hot gas status from AUTO to MANUAL. When the Hot Gas Reheat loop is in MANUAL mode, use the arrow buttons to open or close the HGRH valve (ON = Open, OFF = Closed).

Hot gas reheat loop override Hot gas: AUTO Loop output:000%

Energy recovery wheel preheater Preheater:AUTO Preheater:OFF

End of manual

overrides

THE USER CAN OVERRIDE THE HOT GAS REHEAT OPERATION.

This screen only appears if the Modulating Hot Gas Reheat option was selected with the unit.

To manually override the Hot gas reheat loop, adjust the Hot gas status from AUTO to MANUAL. When the Hot Gas Reheat loop is in MANUAL mode, press the up and down arrow to vary the Loop output %. The Loop output % is directly proportional to a 0-10 VDC signal being sent to the HGRH controller. 000% = 0 VDC = Full Closed 100% = 10 VDC = Full Open

THE USER CAN OVERRIDE THE ENERGY RECOVERY WHEEL PREHEATER.

This screen only appears if the Electric Preheat Frost Control option was provided with the unit.

To manually override the Electric Preheater, adjust the Preheater status from AUTO to MANUAL. When the Energy Recovery wheel preheater is in MANUAL mode, use the arrow buttons to turn the Electric Preheater ON or OFF.

Page 12

I/O SETUP MENU

Access the I/O SETUP menu through the Main Menu. Scroll through the menu screens using the keys. Sensor Calibration: Measure the actual temperature and find the difference from the Sensor Temp

(uncalibrated). This difference becomes the Offset and once the Offset is input to the controller, the Actual Temp should match the actual measured temperature.

***ACCESS DENIED***

Enter Password:0000

WRONG PASSWORD

Setups for DDC Analog & Digital

Inputs/Outputs

B1 Outside:NTC Sensor Temp: 000.0ºF Offset = 00.0ºF Actual Temp: 000.0ºF

THIS SCREEN CAN BE LOCKED TO PREVENT TAMP ERI NG WITH THE SETTINGS. F

ROM THE FACTORY, ACCESS IS NOT PASSWORD PROTECTED TO ALLOW QUICKER

START-UP.

To set the password, go to the ‘PROGRAM’ menu by pressing the button. Once there, scroll down until you arrive at the Change Password screen. The ‘Level 2’

password protects the

‘I/O SETUP’ menu.

THE ‘I/O SETUP’ MENU IS USED TO SET UP THE ANALOG & DIGITAL

INPUT/OUTPUTS.

NOTE: The wiring terminal for each I/O is displayed in the respective screens.

Sensor Temp is the sensor’s uncalibrated output. Offset is for calibrating the sensor. Actual Temp is the new calibrated sensor output.

THIS SCREEN DISPLAYS THE OUTSIDE AIR TEMPERATURE ENTERING THE UNIT.

B2 Supply:NTC Sensor Temp: 000.0ºF Offset = 00.0ºF Actual Temp: 000.0ºF

B3 Cold Coil:NTC Sensor Temp: 000.0ºF Offset = 00.0ºF Actual Temp: 000.0ºF

B4 Room Temp:NTC Sensor Temp: 000.0ºF Offset = 00.0ºF Actual Temp: 000.0ºF

B4 Input Max cooling demand. Input Status:Open

THIS SCREEN DISPLAYS THE SUPPLY DISCHARGE TEMPERATURE.

THIS SCREEN DISPLAYS THE AFTER COOLING COIL TEMPERATURE.

This screen only appears if a cooling system was selected.

THIS SCREEN DISPLAYS THE ROOM TEMPERATURE.

This screen only appears if the room supply sensor is wired between B4 and BC4 on the controller.

THIS SCREEN DISPLAYS THE STATUS OF THE DIGITAL INPUT TO TERMINAL B4.

This screen only appears if the room supply sensor is NOT wired between B4 and BC4 on the controller.

When the Input Status is Open, the unit will operate normally and adjust the discharge temperature based on outdoor air temperature. When the Input Status is Closed (in the case of a digital input, ie. Thermostat), this indicates that a digital call for cool is being received by the controller. The controller then overrides the outdoor air temperature discharge control and sends the supply temperature set point to the supply reset minimum temperature (Max cooling: 55

ºF,adj. in ‘SET POINTS’ menu).

Page 13

I/O SETUP MENU - continued

B5 Dehumidify:ON/OFF Input Status:Open

ANALOG OUTPUTS - PARAMETERS

The Analog Output screens allow the user to adjust the analog outputs for the energy recovery wheel, heating, cooling, and hot gas reheat operation. The factory defaults are provided in the screens shown and are designed to operate with any factory supplied components. Chilled water valves, hot water valves, DX distributors, or HGRH valves provided by others may require adjustments to the following screens to properly operate the components.

Analog output Y1

Energy Recovery Wheel Output 0% --> 100% SIGNAL 00.0V 10.0V

Analog output Y2

Heater Output 0% --> 100% SIGNAL 00.0V 10.0V

THIS SCREEN DISPLAYS THE STATUS OF THE DEHUMIDIFICATION MODE.

This screen only appears if there is a humidistat wired to terminals B5 and BC5 on the controller.

When the Input Status is Open, there is no call for dehumidification. When the Input Status is Closed, the cold-coil set point is reset for fur ther dehumidification.

THIS SCREEN DISPLAYS THE CORRELATION BETWEEN THE ANALOG OUTPUT %

AND THE VOLTAGE SIGNAL FOR THE ENERGY RECOVERY WHEEL.

***DO NOT ADJUST THIS SETTING***

This screen may relate to on/off or modulating control depending upon what accessories were ordered with the unit. The energy recovery wheel is factory-installed and programmed.

THIS SCREEN DISPLAYS THE CORRELATION BETWEEN THE ANALOG OUTPUT %

AND THE VOLTAGE SIGNAL FOR THE HEATING (IE. 60% = 6 VDC).

This screen only appears if Heating was provided with the unit.

The Output and SIGNAL will provide the appropriate control of a hot water coil, electric heater, or indirect gas furnace. User can change the SIGNAL range if required. Factory defaults are 0-10 VDC.

NOTE: This is where the user would adjust for a Heating Control Valve that is 2-10 VDC rather than 0-10 VDC.

Analog output Y3

Cooling Output 0% --> 100% SIGNAL 00.0V 10.0V

Analog output Y4

Hot Gas Reheat Output 0% --> 100% SIGNAL 00.0V 10.0V

DIGITAL INPUTS - PARAMETERS

THIS SCREEN DISPLAYS THE CORRELATION BETWEEN THE ANALOG OUTPUT %

AND THE VOLTAGE SIGNAL FOR THE HEATING (IE. 60% = 6 VDC).

This screen only appears if Chilled Water was provided with the unit.

The Output and SIGNAL will provide the appropriate control of a chilled water coil. User can change the SIGNAL range if required. Factory defaults are 0-10 VDC.

NOTE: This is where the user would adjust for a Cooling Control Valve that is 2-10 VDC rather than 0-10 VDC.

THIS SCREEN DISPLAYS THE CORRELATION BETWEEN THE ANALOG OUTPUT %

AND THE VOLTAGE SIGNAL FOR THE HOT GAS REHEAT (IE. 60% = 6 VDC).

This screen only appears if HGRH was provided with the unit.

The Output and SIGNAL will provide the appropriate control of a on/off or modulating hot gas reheat coil. User can change the SIGNAL range if required. Factor y defaults are 0-10 VDC.

WARNING!

The following screens show the factory defaults for each parameter. Do NOT change parameters unless you are

absolutely certain the parameter needs to be modified. Unit will not function properly and damage may occur

to the unit if the parameters do not match the contact requirements of the components.

Digital Input (ID1) Supply proving switch Alarm: Open Status:Closed

THIS SCREEN DISPLAYS THE ALARM STATUS MODE OF THE SUPPLY PROVING

SWITCH.

When the Supply proving switch alarm is triggered, the fan is not seeing airflow and the unit will shutdown and alarm. The Alarm parameter allows the user to select Open or Closed for the contact position that will trigger the alarm. Status displays the real time status (Open/Closed) of the digital input. NOTE: The controller is only monitoring the contact position -- Not the actual

operation of the fan.

Page 14

I/O SETUP MENU - continued

Digital Input (ID2) Wheel pressure switch High pressure=Closed Status:Open

Digital Input (ID3) Wheel rotation alarm Alarm:Closed Status:Open

Digital Input (ID4) Unit ON/OFF control Unit ON when:Closed Status:Open

Digital Input (ID5) Exhaust proving switch Alarm:Open Status:Closed

THIS SCREEN DISPLAYS THE ALARM STATUS MODE OF THE ENERGY RECOVERY

WHEEL PRESSURE SWITCH.

When the Wheel pressure switch alarm is triggered, the wheel has excessive frost or dirt build-up. The High pressure parameter allows the user to select Open or Closed for the contact position that will trigger the alarm. Status displays the real time status (open/closed) of the digital input.

THIS SCREEN DISPLAYS THE ALARM STATUS MODE OF THE ENERGY RECOVERY

WHEEL ROTATION SENSOR.

When the Wheel rotation alarm is triggered, the wheel has stopped rotating. Refer to ‘PROGRAM’ menu for wheel rotation alarm delay. Status displays the real time status (open/closed) of the digital input.

THIS SCREEN DISPLAYS THE STATUS MODE OF THE REMOTE INPUT FOR UNIT ON

OFF CONTROL.

The Unit ON when parameter allows the user to select Open or Closed for the contact position that will energize the unit. Status displays the real time status (open/closed) of the digital input.

THIS SCREEN DISPLAYS THE ALARM STATUS MODE OF THE EXHAUST FAN.

When the Exhaust proving switch alarm is triggered, the fan is not seeing airflow and the unit will shutdown and alarm. The Alarm parameter allows the user to select Open or Closed for the contact position that will trigger the alarm. Status displays the real time status (open/closed) of the digital input.

Digital Input (ID6) Occupied/Unoccupied Occupied when:Open Status:Closed

Digital Input (ID7) Dirty filter switch Alarm:Closed Status:Open

Digital Input (ID8) Compressor limits Alarm:Open Status:Closed

THIS SCREEN DISPLAYS THE ALARM STATUS OF THE OCCUPIED/UNOCCUPIED

OPERATION.

While in Input ID6 mode, (refer to ‘PROGRAM’ menu) the input from ID6 will send the unit into occupied or unoccupied mode. If in BMS or Time Clock mode, a 24 VDC input from ID6 will override the system operation from unoccupied (refer to ‘TIME CLOCK’ menu for actual override time period) to occupied (but not occupied to unoccupied) mode for a specific override. The Occupied when parameter allows the user to select Open or Closed for the contact position that will indicate Occupied operation. Status displays the real time status (open/closed) of the digital input.

THIS SCREEN DISPLAYS THE ALARM STATUS MODE OF THE DIRTY FILTER SWITCH.

The Alarm parameter allows the user to select Open or Closed for the contact position that will trigger the alarm. Status displays the real time status (open/closed) of the digital input.

THIS SCREEN DISPLAYS THE ALARM STATUS MODE OF THE COMPRESSORS.

This screen only appears if DX cooling was provided in the unit.

The Alarm parameter allows the user to select Open or Closed for the contact position that will trigger the alarm. Status displays the real time status (open/closed) of the digital input. Based on factory defaults, the DX staging will lockout and alarm when the Status is Open.

End of I/O setups

Page 15

TIME CLOCK MENU

Access the

CLOCK SETUP menu through the Main Menu. Scroll through the menu screens using the keys.

***ACCESS DENIED***

Enter Password:0000 WRONG PASSWORD

CLOCK hr:min:sec (Day of week) mm/dd/yyyy

Time/Date/Day Setup Press ENTER to reset the internal clocks time, date & day

IMPORTANT! User must select one of the three options for the Source in the

Unoccupied mode setup screen in the ‘PROGRAM’ menu. The Source represents the means by which Occupied and Unoccupied modes are determined. Option 1: Input ID6 – typically used with a remote time clock (Default) Option 2: BMS – can be overridden by a separate input to ID6 Option 3: Internal Time Clock – can be overridden by a momentary input to ID6

THIS SCREEN CAN BE LOCKED TO PREVENT TAMP ERI NG WITH THE SETTINGS. FROM THE FACTORY, ACCESS IS NOT PASSWO RD PROTECTED TO ALLOW QUICKER

START-UP.

To set the password, go to the ‘PROGRAM’ menu by pressing the button. Once there, scroll down until you arrive at the Change Password screen. The ‘Level 1’ password protects the ‘TIME CLOCK’ menu.

THE CLOCK SETUP MENU ALLOWS THE USER TO ADJUST THE TIME, DATE, AND

OCCUPIED/UNOCCUPIED MODE SETTINGS.

User can also override the current occupied/unoccupied mode for a designated period of time.

Reset clock Time-00:00:00 Date: 00/00/00 (m/d/y) Day-NA

Set the time, date & day here. All three must be set/reset at the same time. When the cursor is in the upper left corner, press up or down to return to the clock menu.

Occ-Unocc Override Current Mode:Occ Override Time:060min Override:No

The following screens only appear if Option 3, the Internal Time Clock function, has been enabled in the Program Menu.

Enable Occ/Unocc Mon:Yes Tue:Yes Fri:Yes Wed:Yes Thu:Yes Sat:Yes Sun:Yes

CURRENT MODE DISPLAYS WHETHER THE UNIT IS IN OCCUPIED MODE OR

UNOCCUPIED MODE.

(OCC = OCCUPIED, UNOCC = UNOCCUPIED)

This screen will only appear if the Occupied/Unoccupied ID6 function has been set to ‘ON’ in the PROGRAM menu under Binary Input Enables.

The controller will allow the user to override from Unoccupied to Occupied mode, but not vice versa. This can be performed by changing this screen to Yes, or it can also be done through a momentary 24 VDC input to terminal ID6. After the Override Time expires, the clock returns to the 7-day schedule.

THIS SCREEN ALLOWS THE USER TO ENABLE/DISABLE UNOCCUPIED MODE FOR

EACH DAY OF THE WEEK.

Selecting ‘No’ means the unit will operate in an Occupied mode only. Selecting ‘Yes’ means the unit will operate in an Occupied mode and an Unoccupied mode.

Enter the desired Occupied/Unoccupied star t times for each day (24 hour time scale).

Occupied Unoccup Mon 06:00 18:00 Tue 06:00 18:00 Wed 06:00 18:00

Occupied Unoccup Thu 06:00 18:00 Fri 06:00 18:00

Enter the desired Occupied/Unoccupied star t times for each day (24 hour time scale).

Page 16

TIME CLOCK MENU - continued

Occupied Unoccup Sat 06:00 18:00 Sun 06:00 18:00

Holidays Holiday = unoccupied mode for 24 hrs. # of holidays:00

Holiday #1 Month:01 Day:01 Unoccupied for 24hrs

End of Clock setup

Enter the desired Occupied/Unoccupied star t times for each day (24 hour time scale).

Enter the number of holidays you wish to schedule (up to 15 days can be entered).

Holidays must be updated every year!

The internal clock will index into unoccupied mode as long as the date is equal to a date entered as a holiday (always a 24 hour period). Example: New Years Day, January 1

MISC INFO MENU

Access the MISC INFO menu through the Main Menu. Scroll through the menu screens using the keys.

Greenheck Fan Corp.

ER DDC1 v3.00

DDC Code: GY2A211X

The DDC was supplied with a user manual - if missing, visit www.greenheck.com

End of Information

THIS SCREEN DISPLAYS THE VERSION OF THE PROGRAM INSTALLED IN THE

CONTROLLER.

If contacting the factory for assistance, record the version of the program and the DDC Code displayed on this screen.

UNIT ON/OFF MENU

Access the UNIT ON/OFF menu through the Main Menu. Scroll through the menu screens using the keys.

Press (ESC) to exit Command unit on or off below. Command Unit:ON

THE ‘UNIT ON/OFF’ MENU ALLOWS THE USER TO TURN THE UNIT ON AND OFF

FROM THE CONTROLLER, PROVIDED THE R TO G CONTACT IN THE UNIT CONTROL CENTER IS CLOSED.

Press Enter to highlight ON/Off in the lower right corner.

Press the the

A remote ON/OFF switch may also be wired into ID4

buttons to turn unit ON or OFF.

End of Information

Page 17

PROGRAM MENU

Access the PROGRAM menu by pressing key. Scroll through the menu screens using the keys. The program button is used to setup the control loops for economizer, defrost, heating, cooling, and reheat

along with defaults for staging, supply reset, time delays, occupied mode, communications, set point source, temperature scale, and changing passwords. Adjustments to these parameters should be performed by a qualified technician. (A Level 2 password must be entered to alter any of the factory programming; factory default is 9998).

***ACCESS DENIED***

Enter Password:0000 WRONG PASSWORD

Factory Setup

Consult factory

before altering

Economizer Controller

Integration:300s Control Band:20ºF

THIS SCREEN CAN BE LOCKED TO PREVENT TAMP ERI NG WITH THE SETTINGS. FROM THE FACTORY, ACCESS IS NOT PASSWORD PROTECTED TO ALLOW QUICKER

START-UP.

To set the password, go to the ‘PROGRAM’ menu by pressing the button. Once there, scroll down until you arrive at the Change Password screen. The ‘Level 2’ password protects the ‘Program’ menu.

THIS SCREEN ALLOWS THE INTEGRATION TIME FOR THE PI CONTROL OF THE

ECONOMIZER AND THE TEMPERATURE BAND AROUND THE SUPPLY SET POINT TO BE ADJUSTED.

This screen will only appear if an Economizer mode was selected with the unit.

This controller uses a Proportional + Integral type control. The integration time programmed into the controller is to provide a smooth reaction to conditions, allowing for less sporadic changes in discharge temperature. To speed up reaction time, decrease the integration time. For slower reaction time, increase the integration time. When making adjustments, make them in small increments, and test the system to determine if the new setting is adequate prior to further adjustment. The band is the range that the integration will occur between. Range of Integration = Supply set pt ± Band. ie: 50° F ± 20° F

Economizer Setup Econo on/off times Minimum ON:300s Minimum OFF:300s

Supply fan cycling defrost setup. Fan off time:005min Fan on time:030min

Cooling Controller

Integration:300s Band:20ºF

THIS SCREEN ALLOWS ADJUSTMENT FOR THE MINIMUM ON/OFF TIMES FOR THE

ECONOMIZER.

This screen only appears if ON/OFF economizer was provided with the unit.

These minimum ON and OFF times prevent the energy wheel motor from short cycling during economizer mode.

THIS SCREEN DISPLAYS THE ON/OFF FAN CYCLE TIMES FOR THE TIMED EXHAUST FROST CONTROL AND ALLOWS THE USER TO ADJUST THESE

PARAMETERS.

This screen only appears if Timed Exhaust Frost Control was provided with the unit.

These ON and OFF times prevent the buildup of frost when the unit is in Timed Exhaust frost control mode.

THIS SCREEN DISPLAYS THE INTEGRATION TIME FOR THE PI CONTROL OF THE

COOLING MODE, AND THE TEMPERATURE BAND AROUND THE SUPPLY SET POINT.

This screen only appears if a Cooling option was provided with the unit.

Page 18

PROGRAM MENU - continued

Compressor Setup # of stages:2 Minimum ON:030s Minimum OFF:180s

Compressor Setup Between stages:240s Lead-Lag:YES Lead-Lag Time:100hrs

Stage1:ON@050%OFF00% Stage2:ON@100%OFF50%

THIS SCREEN DISPLAYS THE NUMBER OF STAGES PROVIDED WITH THE UNIT AND

SHOWS THE COMPRESSOR MINIMUM ON AND OFF TIMES (IN SECONDS).

This screen only appears if DX cooling was provided with the unit.

The purpose of having minimum ON/OFF times is to prevent the compressor from short cycling.

Do not change the defaults shown without consulting the factory.

THIS SCREEN DISPLAYS THE DELAY TIME BETWEEN STAGES, ALONG WITH THE LEAD-LAG TIME PROGRAMMED FOR THE COMPRESSORS.

This screen only appears if 2-stage DX cooling (2 compressors) was provided with the unit.

Between Stages is the time delay (in seconds) between the first and second compressors engaging. Lead-Lag governs whether the stages will reverse operation order after some period of time designated by the Lead-Lag Time setting (Factory Default: YES, 100hrs.). The Lead-Lag Time is the duration of time the unit will operate before reversing the DX staging. In other words, based on the factory default, Compressor 1 will engage before Compressor 2 for 100 hours of operation. After 100 hours, the order reverses and Compressor 2 will engage first. This cycle will continue indefinitely.

THIS SCREEN SHOWS WHEN EACH COMPRESSOR IN A SINGLE OR TWO STAGE DX

UNIT WILL ENGAGE AND DISENGAGE.

This screen only appears if DX cooling was provided with the unit.

Each compressor will engage and disengage based upon the percentage of cooling that the user inputs (refer to Cooling Loop Override screen on the ‘MANUAL OVERRIDE’ menu).

Lead-Lag Note Stage:12 Compressor Lead:12 Compress Lag:21

Compressor will lockout if

safety switches (ID8) trip

3 times in:120 min

Heater Controller

Integration:300s Band:20ºF

THIS SCREEN ALLOWS FOR ADJUSTMENTS TO BE MADE TO THE ORDER OF WHICH

COMPRESSORS WILL ENGAGE.

This screen only appears if 2-stage DX cooling was provided with the unit.

This screen shows the order in which the compressors will engage when operating in the lead-lag setup.

IF THE CONTROLLER DETECTS THREE (3) ALARMS IN THE TIME PERIOD SHOWN, IT

WILL SHUT OFF THE COMPRESSORS AS A SAFETY MEASURE.

This screen only appears if DX cooling was provided with the unit.

The safety lockout screen monitors the safety loop of the DX system, including high limit, low limit, and ambient temps. If the controller detects three (3) trips within 120 minutes, the controller will shut down the DX system. (Example: If the low limit switch trips, automatically resets, and then trips two more times within 120 minutes, the DX system will shut down). If there is a fatal trip, such as a high limit pressure switch trip, the DX system will not run and the controller will signal an alarm after trying three times unsucessfully to start the DX cooling process.

THIS SCREEN DISPLAYS THE INTEGRATION TIME FOR THE PI CONTROL OF THE

HEATING MODE AND THE TEMPERATURE BAND AROUND THE SUPPLY SET POINT.

This screen only appears if a Heating option was provided with the unit.

Page 19

PROGRAM MENU - continued

Will heater be used for reheat during dehumidification? Reheat:Enable

Will heater be used for reheat along with the hot gas? Heater:Disable

Hot Gas Controller

Integration:300s Band:20ºF

THIS SCREEN ALLOWS THE USER TO ENABLE THE HEATER FOR REHEAT PROCESS.

This screen only appears if a Heating option was provided with the unit and the unit does NOT have hot gas reheat.

If it is desired that the heater be used to reheat the air off the cooling coil when in dehumidification, adjust this screen so the Enable is displayed.

THIS SCREEN ALLOWS THE USER TO ENABLE THE HEATER TO PROVIDE ADDITIONAL

REHEAT.

This screen only appears if Hot Gas Reheat and a Heating option was provided with the unit.

Setting the Heater parameter to Enable allows the Heating option to provide additional reheat above and beyond what the Hot Gas Reheat can provide. This would typically only be used if the discharge temperature off the Hot Gas Reheat coil was too cold for the space.

THIS SCREEN DISPLAYS THE INTEGRATION TIME FOR THE PI CONTROL OF THE HOT

GAS REHEAT MODE AND THE TEMPERATURE BAND AROUND A SET POINT.

These parameters may be adjusted if necessary. This screen only appears if a Hot Gas Reheat option was provided with the unit.

Hot Gas reheat coil minimum on/off time 10 minutes

Supply Reset Control

Integration:300S Band:20ºF

THIS SCREEN ALLOWS THE USER TO ADJUST THE MINIMUM ON / OFF TIME FOR THE

HOT GAS REHEAT COIL.

This screen only appears if ON/OFF Hot Gas Reheat was provided with the unit.

This is the minimum on/off time operation for the Hot Gas Reheat coil. The factory programmed time prevents short-cycling of the coil, which allows for better oil distribution through the DX system.

Use caution when altering the on/off time as damage may occur to the system if set too low. Consult the factory for information.

THIS SCREEN DISPLAYS THE INTEGRATION TIME AND TEMPERATURE RANGE FOR

THE PI CONTROL OF THE SUPPLY RESET TEMPERATURE.

These parameters may be adjusted if necessary. This screen only appears if a Room Supply Temp sensor is wired between B4 and BC4 on the controller.

Page 20

PROGRAM MENU - continued

Time delay between heating, cooling, &/or economizer modes. Delay:600s

Unoccupied mode setup. Type:Cycle Supply Fan Source: Input ID6

Allow the dampers to open for:10 seconds before starting the fans.

THIS SCREEN ALLOWS FOR THE USER TO ADJUST THE DELAY TIME BETWEEN

MODES.

This time delay prevents short-cycling between heating, cooling and/or economizer modes.

THIS SCREEN DISPLAYS WHAT THE UNIT WILL DO IN UNOCCUPIED MODE.

Setting the Type to Cycle Supply Fan will engage the unit to maintain space temperature. However, the room suppy temp sensor must be wired between B4 and BC4 on the controller. If desired, the Source offers three options that can be used to operate unoccupied/occupied modes: Option 1: Input ID6 – typically used with a remote time clock (Default) Option 2: BMS – can be overridden by a separate input to ID6 Option 3: Internal Time Clock – can be overridden by a separate input to ID6 Without the room supply temp sensor, the Type will say Unit Off, and thus the unit will be off during unoccupied mode.

THIS SCREEN ALLOWS FOR THE USER TO PROGRAM THE TIME FOR THE DAMPERS

TO OPEN PRIOR TO THE FAN ENGAGING.

This allows for a smoother startup of the system and prevents the fans from having to overcome the higher pressures when dampers are just beginning to open. Since dampers have a slow reaction time, the default is 10 seconds which allows enough time for them to fully open.

Fan/airflow proving alarm delay:030s

(inputs ID1 & ID5)

Time delay between starting of supply & exhaust fans. Fan delay:005s

THIS SCREEN ALLOWS FOR THE USER TO DELAY AN ALARM SIGNAL FROM THE FAN

AIRFLOW PROVING SWITCH WHICH SHUTS THE UNIT DOWN.

Since the unit is only part of a complete system, the airflows may momentarily change (ie. If a downstream damper closes). This delay is intended to prevent false alarms (the factory recommends that at least 30 seconds be programmed into the controller).

THE TIME DELAY BETWEEN THE STARTING OF THE SUPPLY AND EXHAUST FANS

THAT REDUCES THE STARTUP AMP DRAW OF THE UNIT.

Also, the exhaust fan engages first, allowing the wheel to see space temperature conditions prior to the supply fan engaging. This allows the energy recovery wheel the opportunity to provide maximum preconditioning of the outdoor air. This also minimizes the potential of extreme outdoor air temperatures being supplied to the space prior to the cooling and or heating sections engaging.

Page 21

PROGRAM MENU - continued

Wheel rotation alarm delay:030s

(input ID3)

Communications Setup Press ENTER to setup the communication parameters

Communications Setup Comm Type:None

Communications Setup Comm Type:BACnet

THIS SCREEN ALLOWS FOR THE USER TO CHANGE THE TIME DELAY UNTIL THE

CONTROLLER WILL SHOW AN ALARM.

This screen appears whether the wheel rotation alarm was provided or not. If provided, there will be a wire in ID3 on the controller.

Similar to the Fan/airflow proving switch alarm, the Wheel rotation alarm delay allows time to elapse prior to the controller showing an alarm. The delay prevents a false alarm from occurring if the sensor does not pickup the wheel rotation for a second or two.

The communications setup allows the user to program the type of BMS system (BACnet, LonWorks, pcoWEB, or MODBUS), and where required, the Identification # and Baud numbers needed to operate the controller. Screens displaying the communication options available with this unit are shown.

Communications Setup Comm Type:LonWorks

Communications Setup Comm Type:pcoWEB

Communications Setup Comm Type:PlantVisor Identification #:001

Communications Setup Comm Type:Modem Identification #:001

Communications Setup Comm Type:MODBUS Identification #:001 Baud:9600

Page 22

PROGRAM MENU - continued

--Set Point Source-Use local set point, or BMS interface set point?:Local

Temperature Scale Select:Fahrenheit Display Buzzer Select:Enable

Select DDC configuration code here.

Code:GYCA210X

USERS CAN CHOOSE EITHER THE CONTROLLER OR THE BMS TO DETERMINE SUPPLY DISCHARGE SET POINT DURING OPERATION.

This screen only appears if a BMS is wired into the controller.

Local means the controller set point will be used during operation, and BMS Interface means that Supply Discharge set point can be inputted to the controller from the BMS.

THIS SCREEN ALLOWS THE USER TO ADJUST WHAT TEMPERATURE UNITS THE

CONTROLLER SHOULD OPERATE IN, AND WHETHER THE BUZZER SHOULD BE ENABLED OR DISABLED.

The temperature can be either Fahrenheit or Celsius. The buzzer is only applicable when there is a remote interface panel attached to the controller. If an alarm were to occur, the remote display panel would begin buzzing loudly (if the buzzer was enabled) and it would show the alarm status.

THIS SCREEN DISPLAYS AND ALLOWS FOR ADJUSTMENTS TO BE MADE TO THE

CODE FOR THE UNIT.

This code is set from the factory to operate the components selected with the unit. Refer to front page for code description. When troubleshooting, be sure to verify that the code matches the components provided with the unit.

If the code needs to be modified, press Enter

first character. Use the

character. To finish, press Enter the screen.

keys to adjust. Press Enter to move to the next

until the cursor moves to the upper left corner of

and the cursor will move to the

Change Passwords

LEVEL 1:0000 LEVEL 2:0000

End of Program menu

THIS SCREEN DISPLAYS THE PASSWORDS WHICH PROTECT THE CONTROLLER FROM

TAM PER ING .

Passwords must be greater than zero to be activated. LEVEL 1 password locks out the following menus:

• SET POINTS • MANUAL OVERRIDES

• TIME CLOCK LEVEL 2 password locks out the following menus:

• PROGRAM • I/O SETUP menus.

Page 23

Description

Write (BMS to Unit signal)

{Please refer to Controller IOM}

Lonworks FTT-10A Type Read (Unit to BMS signal)

BACnet IP / BACnet Ethernet / BACnet MSTP

Device Instance: 77000 (default)

Network Address: 1

Carel Modbus-RTU (RS485)

Address Address Address Name Units Address Name NV Type NV

1 40002 1 A001 º F 1 nvoOutsideTemp 105 Analog R Outside Air Temp (###.#ºF)

2 40003 2 A002 º F 2 nvoSupplyTemp 105 Analog R Supply Air Temp (###.#ºF)

3 40004 3 A003 º F 3 nvoColdCoilDisch 105 Analog R Cooling Coil air Temp (###.#ºF)

4 40005 4 A004 º F 4 nvoRoomTemp 105 Analog R Room Air Temp (if Installed) (###.#ºF)

11 40012 11 A011 º F 11 nv(0/i)TempSetPt 105 Analog R/W Temperature Set Pt (read/write) (###.#ºF)

1 40130 1001 I001 no-units 1 nvoStatus 81 Integer R Note 1

2 40131 1002 I002 percent 2 nvoHeating 81 Integer R Heater output (0-100%)

Inactive_Text Active_Text

3 40132 1003 I003 percent 3 nvoCooling 81 Integer R Cooling output (0-100%)

4 40133 1004 I004 percent 4 nvoWheel 81 Integer R Energy recovery wheel speed (5 speed) (defrost & economizier)

5 40134 1005 I005 percent 5 nvoHotGasReheat 81 Integer R Hot Gas reheat output (0-100%)

1 10002 1 D001 Off On 1 nvoOnOffStat 95 Digital R Unit ON/Off

2 10003 2 D002 Off On 2 nvoSupplyFan 95 Digital R Supply fan status

3 10004 3 D003 Off On 3 nvoExhaustFan 95 Digital R Exhaust fan status

4 10005 4 D004 Unoccupied Occupied 4 nvoOccupancyStat 95 Digital R Occupancy Status (0=Unoccupied, 1=Occupied)

5 10006 5 D005 Off On 5 nvoCompressor1 95 Digital R Compressor #1 ststus

6 10007 6 D006 Off On 6 nvoCompressor2 95 Digital R Compressor #2 status

7 10008 7 D007 Off On 7 nvoDeFrostMode 95 Digital R Defrost mode status

10 10011 10 D010 Stop Start 10 nv(o/i)StartStop 95 Digital R/W Unit start/stop command

11 10012 11 D011 Don’t Reset Reset Alarms 11 nv(o/i)ResetAlarms 95 Digital R/W Reset alams command

12 10013 12 D012 Occupied Unoccupied 12 nv(o/i)OccUnocc 95 Digital R/W Occupied/unoccupied command (0=occupied, 1=unoccpied)

20 10021 20 D020 Off Alarm 20 nvoGlobalAlrm 95 Digital R Global alarm indication (active when there is at least one alram)

21 10022 21 D021 Off Alarm 21 nvoSupplyFanAlm 95 Digital R Supply air proving alarm

22 10023 22 D022 Off Alarm 22 nvoWhlPressurAlm 95 Digital R High Wheel pressure (high airflow or dirty wheel)

23 10024 23 D023 Off Alarm 23 nvpWhlRotateAlm 95 Digital R Wheel rotation alarm

24 10025 24 D024 Off Alarm 24 nvoExhaustFanAlm 95 Digital R Exhaust air proving alarm

25 10026 25 D025 Off Alarm 25 nvoFilterAlm 95 Digital R Dirty filter alarm

26 10027 26 D026 Off Alarm 26 nvoCompTripAlm 95 Digital R Compressor trip alarm

27 10028 27 D027 Off Alarm 27 nvoCompLockedAlm 95 Digital R Compressor locked out alarm

28 10029 28 D028 Off Alarm 28 nvoSipplyTempAlm 95 Digital R Supply air temperature low limit alarm

29 10030 29 D029 Off Alarm 29 nvoB1Alm 95 Digital R Sensor#1 out of range (outside air temperature)

30 10031 30 D030 Off Alarm 30 nvoB2Alm 95 Digital R Sensor#2 out of range (supply air temperature)

31 10032 31 D031 Off Alarm 31 nvoB3Alm 95 Digital R Sensor#3 out of range (cold coil leaving air temperature)

3=exhaust fan starting; 4=supply fan starting; 5=system on;

6=defrost mode active; 7=system on-economizer; 8=system

on-heating; 9=system on-cooling; 10=system on dehumidifying;

11 system on-dehumidifying & reheat; 12=unoccupied-unit off;

13=unoccupied-heating; 14=unoccupied-cooling; 15=Manual

override; 16=remote off; 17=Alarm

Note: 1) Unit status index: 0=system off; 1=initial delay; 2=opening dampers;

Page 24

Date Time Notes:

Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase date. The energy recovery wheel is warranted to be free from defects in material and workmanshipfor a period of five years from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid.

Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.

IOM DDC Controller

Rev. 1 February 2007

Atlas Metal DDC Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual