Table of Contents
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• Controls specific to
Controlled
Environment
Agriculture
• Monitoring of
temperature, RH,
dew point, and VPD
• Photocell input
allows for feedback
of light cycle
• Optional CO
2
monitoring and
automated control
• Capability to link
units for coordinated
control in a single
space
• Cloud-based logging,
alarms, and control
when used with
AireGuard™
Operation Manual for GV Units
4
4
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Table of Contents
Related Manuals for Desert Aire CM3554 Series
Summary of Contents for Desert Aire CM3554 Series
- Page 1 Operation Manual for GV Units • Controls specific to Controlled Environment Agriculture • Monitoring of temperature, RH, dew point, and VPD • Photocell input allows for feedback of light cycle • Optional CO monitoring and automated control • Capability to link units for coordinated control in a single space...
- Page 3 TERMS Desert Aire warrants all components (except as noted) for a period of two (2) years from the date of shipment. This warranty shall be limited to the supply of new or rebuilt parts for the part which has failed because of defects in workmanship or material, and does not include the cost for labor, transportation or other costs not herein provided for.
- Page 4 E-MAIL: service@desert-aire.com Additional copies of this manual can be purchased for a nominal fee from Desert Aire. Desert Aire also posts the most current revision of our I/O Manuals on our website. For a digital copy of the I/O Manual for your unit revision, please submit request to the contact information listed above.
- Page 5 Product Warning for the State of California Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 6 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 7: Table Of Contents
2.3.3.2.2 Analog Outputs (Figure 98) ..........2.3.3.4 Sensor Offsets (Figures 99 - 101) ........... 2.3.3.5 Memory Options (Figures 102 - 105) ..........2.3.4 Unit Revision (Figure 105) ................2.3.5 Grow Schedule (Figures 106 - 108) ..............Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 8 Suction Pressure Transducer ................. Discharge & Liquid Pressure Transducer ............... Suction Line, Liquid & Supply Air Temperature Sensor ......... Zone & Intake Air Temerature & Relative Humidity Sensor ........Air Flow Proving Differential Pressure Sensor ............Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 9: Installation
Mount this sensor in the air duct supplying conditioned air to the zone. Auxiliary Air Heating Control Wiring Note: You must use the Desert Aire CM3554 control system to control or interlock with the room heating system. This prevents wide fluctuations in room air temperature. It also prevents the heater from trying to heat the room while the dehumidifier is running in the cooling mode. -
Page 10: Auxiliary Heating - Dry Contact Closure
1.3.2 Auxiliary Heating - Dry Contact Closure Desert Aire will provide a proportional 0-10 VDC direct-acting signal to modulate a heating coil control valve or other auxiliary modulating heater. This signal may be changed to reverse acting. Contact the Desert Aire Service department for assistance with this option. -
Page 11: Cm3554 Controller Details
Your Desert Aire controller is pre-programmed and configured at the factory for use in the application you have specified. The internal display terminal (IDT, see Figure 1) allows the operator to monitor and adjust the setpoints of your Desert Aire system. The IDT has an LCD screen and six keys. These keys are labeled as below: The remote display terminal (RDT) has an LCD screen and six keys. These keys are labeled as... -
Page 12: Active Zone Setpoints (Figures 2-15)
Figure 2 and Figure 3. In the middle of the screens of Figure 2 and 3 the zone temperature setpoint, and zone relative humidity setpoint are adjustable for lights on and lights off modes. At the bottom of both screens the zone temperature is displayed. Figure 2 Figure 3 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 13 Figures 6 and 7. Here the network zone temperature and humidity setpoints are adjustable for both the lights on and lights off mode of operation. These setpoints will also be adjustable through Modbus or BACnet protocol depending on the BMS option selected. Figure 6 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 14 If the zone alert option has been enabled, then pressing the DOWN key from the zone setpoints screen will display the screen of Figure 10. From this screen the maximum and minimum temperature and humidity values for the zone are all adjustable. If the Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 15 Figures 12 and 13. From this screen the position for the return air and outdoor air dampers are adjustable for the Unit Off, Lights OFF, and Lights ON modes of operation. The screen of Figure 13 allows access to the diagnostics screens of the damper. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 16 Directly below there is a selection for MANUAL control. This can be activated to TEST SYNC or RESET the damper settings. These should only be adjusted with the assistance of service personnel. Figure 14 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 17: Main Menu (Figure 16)
Figure 16 To return to the Home Screen, press the Esc key. 2.3.1 Unit Status (Figures 17-24) Selecting the Unit Status will display the screen shown in Figure 17. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 18 Figure 18 Pressing the DOWN key will display the screen of Figure 148. This screen shows the status of the compressors “On”/ ”Off”. If the unit is dual circuit, then the statuses of compressors 3 and 4 will also be displayed. If the compressor is off due to the compressor timing, the remaining time will be displayed to the right of the on/off status. At the Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 19 Towards the top the Cool Demand, Dehum Demand, and RH demand are displayed. Towards the bottom the supply air temperature setpoint and the lights “On”/ “Off” status is displayed. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 20 If the unit is dual circuit, then pressing the DOWN key will display the same information for circuit B valves. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 21: Time/Date (Figure 25)
All times are set in the 24-hour format. Pressing the ENTER key will accept that value and step to the next item. To return to the MAIN MENU, press the Esc key. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 22: Service Menu (Figures 26 - 27)
Use the same method throughout the manual to call out lists from a display screen. Figure 27 To return to the Main Menu, press the Esc key. The user remains Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 23: Commissioning (Figure 28)
Gateway (GW) and DNS addresses need to be set as well. If a DHCP service is available, leave the DHCP setting to On and the service will assign an IP address. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 24 Tag” must be checked. This will write the new hostname to the controller. The checkbox “Get Unit Tag” can be checked to confirm that the correct hostname was written to the controller. After changing the unit tag the unit should be power cycled. Figure 31 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 25 “Hostname MB FLT” will be displayed. If lead unit data drops out the unit will fall back to a zone sensor if connected, or the intake sensor. Towards the bottom Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 26: System Capacity (Figures 33 - 35)
Pressing the DOWN key will display the screen of Figure 34. From this screen the unit sizes and unit tags of a lead-lag system can be entered on lead units, and viewed on lag units. Figure 34 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 27: Timer Settings (Figures 36 - 37)
Figure 36. From this screen the compressor delay and airflow delay can be adjusted. Figure 36 Pressing the DOWN key will display the screen of Figure 37. This screen allows adjustment of the mode delays for Cool, Dehum, and Heat. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 28: Supply Fan Setup (Figures 38 - 43)
CFM setpoints. Directly below the maximum and minimum demand values can be adjusted. These values scale the speed from minimum to maximum CFM based on the system demand. Figure 38 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 29 “Manual Control” and adjust the manual speed command. Towards the bottom of the screen the speed command that is being used on the fan, and the current CFM reading are displayed. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 30 If the unit is equipped with multiple supply fans this screen will be repeated for the other fans. To return to the SUPPLY EC FANS screen, press the Esc key. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 31: Bms Setup (Figures 44 - 48)
The port can be set to BACnet MS/TP or to Modbus RTU. Making any changes will require a power cycle to have those changes take effect. Figure 44 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 32 Modbus RTU. This will allow the screen shown in Figure 47 to be displayed. The BACnet License can now be assigned to the Ethernet port, by changing from Modbus TCP/IP to BACnet. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 33: Co Settings (Figures 49-51)
Figures 49. From this screen the user can adjust the valve “On” setpoint and differential towards the top of the screen. The valve “Off” setpoint will be calculated as the “On” setpoint plus the differential displayed below these settings. Towards the bottom of the screen the zone CO reading is displayed as well as the CO valve “On”/”Off” status. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 34 CO2 is displayed as well as the CO2 low alarm “OK/FLT” status. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 35: Tuning Menu (Figure 52)
REHEAT TRAN screen shown in Figure 53. From this screen the user can adjust the PID terms for the reheat transition control loop. These PID settings are active for 10 minutes after the Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 36: Air Heat Settings (Figures 55 - 57)
Menu displays the AUX HEATING screen shown in Figure 55. From this screen the user can invert the heating command by checking the box towards the top. Directly below the heat output Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 37 Towards the bottom half of the screen the supply air temperature, calculated supply air temperature setpoint, and auxiliary heating command are displayed. Figure 56 Pressing the DOWN key will display the AUX Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 38: Ext Heat Settings (Figures 58 - 60)
The max choke is the minimum position the valve can close to during extended heat, whereas the min choke is the most open the valve can be during extended heat. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 39 If the unit is dual circuit, then the screen of Figure 60 will be repeated for circuit B. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 40: Zone Reset Settings (Figures 61-76)
10 minutes after the transition between lights on and lights off mode of operations. Towards the bottom half of the screen the zone air temperature, zone air temperature setpoint, and calculated supply air temperature setpoint are displayed. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 41 Towards the bottom half of the screen the zone air temperature, zone air temperature setpoint, and calculated supply air temperature setpoint are displayed. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 42 TRANSITION screen shown in Figure 65. From this screen the user can adjust the PID terms for the cooling demand transition control loop. These PID settings are active for 10 minutes after the transition between lights on and lights off mode of operations. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 43 DEMAND screen shown in Figure 67. From this screen the user can adjust the PID terms for the cooling demand control loop. Towards the bottom half of the screen the zone air temperature, zone air Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 44 10 minutes after the transition between lights on and lights off mode of operations. Towards the bottom half of the screen the zone air dewpoint, zone air dewpoint setpoint, and calculated dehum demand are displayed. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 45 PID terms for the dehum demand control loop. Towards the bottom half of the screen the zone air dewpoint, zone air dewpoint setpoint, and calculated dehum demand are displayed. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 46 RH demand are displayed. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 47 RH differential off and on are both adjustable. These differentials are added to and subtracted from the zone air relative humidity setpoint. These values are used to send the unit into dehumidification mode if the zone air relative humidity rises too far above setpoint with no call for dehum demand. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 48: Capacity Control Settings (Figures 77 - 81)
As demand increases the unit will move from the maximum saturated suction temperature setpoint towards the minimum with a reset occurring as each compressor comes on within the system. At the Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 49 Pressing the DOWN key will display the CIR A VPD SYNC screen shown in Figure 79. From this screen the user can adjust the PID terms for the circuit A VPD synchronization control loop. Towards Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
- Page 50 The valve command displayed towards the bottom of the screen will be the larger of the two commands shown above. If the unit Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 51: Condenser (Figures 82 - 86)
Pressing the DOWN key will display the CONDENSER SETTINGS screen shown in Figure 83. From this screen the minimum condenser fan speed is adjustable towards the top of the screen. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 52 This screen will be repeated for the total number of condenser fans equipped with the unit. To return to the CONDENSER EC FANS screen, press the Esc key. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 53: I/O Status (Figure 87)
Selecting I/O STATUS from the SERVICE MENU will display the I/O STATUS menu screen shown in Figure 87. From this screen the user can select DIGITAL INPUTS, ANALOG INPUTS, DIGITAL OUTPUTS, or ANALOG OUTPUTS. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 54: Digital Inputs (Binary) (Figures 88 - 90)
• The sixth line will show the status of EVD4 DI2, compressor 4 motor starter overload contacts, “Ok” if no overload is present, and “Flt” if an overload exists. Only for Dual circuit units. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 55 “Flt” when the contact is open. • The fifth line will show the status of the ID13, the system switch. “On” if the switch is on and “Off” if the switch is off. • The sixth line will show the status of the ID14, the Photo Cell. “On” if the switch is on and “Off” if the switch is off. Figure 89 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 56: Analog Inputs (Figures 91 - 94)
Figure 90 To return to the I/O STATUS MENU, press the Esc key. 2.3.3.3.2 Analog Inputs (Figure 91 - 94) Selecting the Analog Inputs Screens shows the state Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 57 P2T value of the liquid pressure sensor and the Subcooling values of circuit A. For dual circuit units the screen of Figure 93 will be repeated for circuit B. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 58: Digital Outputs (Binary) (Figures 95 - 97)
• The first line will show the status of Compressor 1 motor starter, “On” and “Off”. • The second line will show the status of Compressor 2 motor starter, “On” and “Off”. • The third line will show the status of Compressor 3 motor starter, “On” and “Off”. This will only be shown for dual circuit units. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... - Page 59 Figure 96 The third page is shown only if the CO option is selected for the unit. • The first line will show the status of the CO valve. • The second line will show the status the CO Alarm. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 60: Analog Outputs (Figure 98)
• If enabled the Outdoor Air Damper Position Command • If enabled the Return Air Damper Position Command Figure 98 To return to the I/O STATUS screen, press the Esc key. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 61: Sensor Offsets (Figures 99 - 101)
Press the ENTER key to accept the offset value. Figure 99 Figure 100 Figure 101 To return to the STATUS MENU, press the Esc key. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 62: Memory Options (Figures 102 - 105)
Pen Drive, insert a USB Pen Drive and, with the cursor over the ‘Press UP to Import’ or ‘Press UP to Export’ field, press the UP key. Wait for the screen to say “Completed” before removing the drive. Figure 102 Figure 103 Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 63: Unit Revision (Figure 105)
The Unit Revision Screen shows the version of the application program that is running along with the release date of the software. This information should be passed to Desert Aire in the event a service call is necessary. Figure 105 To return to the SERVICE MENU, press the Esc key. - Page 64 The screen shown in Figure 108 will reset the grow schedule to 1 day and the transition time to 23 hours. Figure 106 Figure 107 Figure 108 To return to the MAIN MENU, press the Esc key. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com...
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Page 65: Alarm Menu
For EEV alarms, listed below, the alarm is Automatic Reset and provided to display information of the valve driver but do not affect operation of the unit. The red Alarm LED will be turned off when the EEV alarm clears, without action by the operator. To return to the home screen, press the Esc button. Desert Aire - CM3554 Operation Manual - 462CE 2023/05 – www.desert-aire.com... -
Page 66: System Alarms
The EVD Module alarms are automatically generated internally from the electronic valve drives. Any active alarm for these drivers are shown in the driver menus. Contact the Desert Aire service department for instructions on how to view these alarms. These alarms do not affect the operation of the u nit and are shown for informational trouble shooting only. These include EVD Offline, Low SH A, Low SH B, LOP A, LOP B,... -
Page 67: Suction Pressure Transducer
-623.3° F if the sensor is open, and display a reading of 687.3° F if the sensor is shorted. The Desert Aire replacement part number for the Supply Air Temperature Sensor is available by calling our service department. -
Page 68: Zone & Intake Air Temerature & Relative Humidity Sensor
This sensor is a communicating device which sends Modbus data out from address 190. If communication is lost from this device, an alarm is activated. The Desert Aire replacement part number for the Zone Air Temperature and Relative Humidity Sensor is available by calling our service department. - Page 70 N120 W18485 Freistadt Road • Germantown, WI 53022 • E-mail: info@desert-aire.com Ph: (262) 946-7400 • Fax: (262) 946-7401 • Website: www.desert-aire.com 462 2023/05...