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CRD

 

 

 

6 of 12 

 

Nov 10 

 

CRD OPERATION 
 
To move between pages press either DN     or UP    . 
 
To escape from modifying an entry press  ESC    . 
 
To make any adjustments you must first enter the password, press ENT    then UP     or DN     
to change the password #, press ENT     and continue until the new password is entered.   
Press ENT     when complete.  
 
To modify a manual value, move to the page that allows manual changes to  
the setpoint.  Press ENT     and then press DN     to decrease and UP     to increase the  
value.  When the appropriate value has been set, press ENT     to save. 
 
To ensure the value is not lost in the event of a power failure or equipment servicing, be sure  
to save it.  Go to Save Setpoints then ENT     and UP      for On, then press ENT    to save. 
 
To restart the equipment from the CRD go to Enable Unit and press ENT     then  
press  UP     for On , then press  ENT     to restart the equipment. 
 

 
CLOCK / SCHEDULER 
 
If the time clock/scheduler is enable press ENT     on the clock/scheduler to go to the 
time and date page. Press the ENT     to change the dates and times. Press the DN 
to go to the scheduler page. The scheduler # can have up to 7 different schedules with  
different on/off times and days of the week. Press ENT     to advance to the time on,  
time off and days enabled as per the schedule #. 

 
 
 

 

 
 
 
 
 

 
 
 
 
 
 

 

Summary of Contents for CRD C-TRAC3

Page 1: ...ACTORY CANADIAN EASTERN FACTORY 1401 HASTINGS CRES SE CALGARY ALBERTA T2G 4C8 Ph 403 287 4774 Fx 888 364 2727 32050 W 83rd STREET DESOTO KANSAS 66018 Ph 913 583 3181 Fx 913 583 1406 1175 TWINNEY DRIVE NEWMARKET ONTARIO L3Y 5V7 Ph 905 898 1114 Fx 905 898 7244 www engineeredair com SALES OFFICES ACROSS CANADA AND USA Retain instructions with unit and maintain in a legible condition Please give model...

Page 2: ...er information is required please contact the nearest Engineered Air office Under no conditions except for temporary copying should the unit function be removed from the unit There are two copies provided with the unit One is in an envelope for copying then return it to the unit or store in a safe place The other is attached to the control panel door and should never be removed This manual is inte...

Page 3: ...4 WIRING REMOTE HAND HELD DISPLAY 4 CRD OPERATION 6 CLOCK SCHEDULER 6 UNIT MODE 8 SCHEDULER 8 UNIT OPERATION 8 Discharge Temperature and Setpoint 9 Ambient Damper and VFD Information 9 Additional Inputs And Outputs 9 Alarm Status 9 Customer Password 9 POINTS LIST 11 ...

Page 4: ...ntrol features Feature 1 Display only Feature 2 Control unit on off adjust discharge setpoints damper minimum position internal time clock Feature 3 Remote hand held display c w options 1 and 2 CRD WIRING The RS 485 Modbus communication cable from the CRD to the C TRAC3 is 24awg shielded twisted pair STP with a shunt capacitance of 16pF per foot and 100 ohm characteristic impedance Category 5 cabl...

Page 5: ...A CRD 5 of 12 Nov 10 ...

Page 6: ...ress ENT to save To ensure the value is not lost in the event of a power failure or equipment servicing be sure to save it Go to Save Setpoints then ENT and UP for On then press ENT to save To restart the equipment from the CRD go to Enable Unit and press ENT then press UP for On then press ENT to restart the equipment CLOCK SCHEDULER If the time clock scheduler is enable press ENT on the clock sc...

Page 7: ...A CRD 7 of 12 Nov 10 FIELD WIRING DIAGRAM ...

Page 8: ...age is designed to provide the correct state of operations Unit Modes Scheduler Unit Operation Discharge Temperature and Setpoints Ambient and Damper Information Additional Inputs And Outputs Alarm Status Customer Password UNIT MODE Describes the current operating modes that are enabled fan status as well as the program number SCHEDULER If the equipment is operated by a time clock schedule this pa...

Page 9: ...ion Indicates the ambient sensor reading and the economizer minimum position of the outside air dampers setpoint and actual Setpoint changes may be made here but will not be saved unless saved to flash memory Also notes the variable frequency drive feedback signal if equipped Additional Inputs And Outputs The CRD may be configured to allow for additional inputs and outputs such as a clogged filter...

Page 10: ...A CRD 10 of 12 Nov 10 ...

Page 11: ...O MODE HEATING MODE ECONOMIZER MODE COOLING MODE ENABLE UNIT ON OFF UNIT STATUS OCCUPIED OFF UNOCCUPIED HEATING ON OFF L O HI AMBIENT COOLING ON OFF L O LOW AMBIENT ECONOMIZER ON OFF L O HI AMBIENT Discharge Temperature And Setpoints DISCHARGE TEMP F OR C DISCHAGRE STPT F OR C ADJ DISCH STPT WRITE F C READ F C SECONDARY DT TEMP F OR C ADJ SEC DT TEMP WRITE F C READ F C Ambient and Damper Informati...

Page 12: ...OW LIMIT LOCKOUT OK ALARM HEAT FAILURE LOCKOUT OK ALARM PREPURGE ALARM OK ALARM FLAME FAILURE OK ALARM HE OR LMK FAILURE OK ALARM Alarm Status DISCHARGE AIR OK ALARM SECONDARY DT OK ALARM AMBIENT OK ALARM Insert Customer Password PW1 0000 ...

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