Table of Contents
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Backlit LCD User
Interface
Custom programming for
complex dehumidification
temperature & humidity
control
Multiple communication
options:
- LonWorks
®
- BACnet™ Ethernet
- BACnet™ MS/TP
- Modbus
®
Alarm history retention
Integral remote access
capability
CM3530 Series
Controller
Installation and Operations Manual
for LC/LV Units
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Table of Contents
Related Manuals for Desert Aire CM3530 Series
Summary of Contents for Desert Aire CM3530 Series
- Page 1 CM3530 Series Controller Installation and Operations Manual for LC/LV Units Backlit LCD User Interface Custom programming for complex dehumidification temperature & humidity control Multiple communication options: - LonWorks ® - BACnet™ Ethernet - BACnet™ MS/TP - Modbus ® Alarm history retention...
- 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 - CM3530 Manual...
- Page 6 Desert Aire - CM3530 Manual...
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Page 7: Table Of Contents
2.3.3.1.4 Configuration-Roof Open Action ........2.3.3.2 Airflow Setup ................2.3.3.2.1 Current Conditions ............2.3.3.2.2 Commissioning Tests ............. 2.3.3.2.3 Motor Phasing ............... 2.3.3.3 BMS Setup ................... 2.3.3.4 Tuning-Deadbands ............... 2.3.3.4.1 Tuning-Differentials ............2.3.3.4.2 Tuning-Air Heat ............. 2.3.3.4.3 Tuning-Air Heating ............Desert Aire - CM3530 Manual... - Page 8 Suction Line, Liquid & DHU Temperature Sensor ........... Zone Air Temperature and Relative Humidity Sensor ..........Reheat Condenser and Evaporator Bypass Differential Air Pressure Sensors ..EC Blower Differential Air Pressure Sensor ............Appendix ..........................Internal Web Page ....................Desert Aire - CM3530 Manual...
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Page 9: Installation
Installation Introduction Your Desert Aire controller is designed for precise monitoring and control of air temperature and relative humidity (RH) within a conditioned environment. This CM3530 control system is easy to install and operate. The controller features an internal display terminal (IDT). This display allows viewing and adjustment of the unit’s sensors and set points. -
Page 10: Water Temperature Sensors
1.3 Auxiliary Air Heating Control Wiring Note: You must use the Desert Aire CM3530 control system to control or interlock with the room heating system. This prevents the heater from trying to heat the room while the dehumidifier is running in cooling mode. -
Page 11: Cm3530 Controller Overview
Desert Aire’s service department for recommendations or instructions on how these options can be implemented. CM3530 Controller Overview Desert Aire’s CM3530 microprocessor controller is a powerful, flexible controller with many useful features including: • Display of room air temperature, relative humidity and refrigerant pressures. - Page 12 Desert Aire - CM3530 Manual...
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Page 13: Lc / Lv Controller Details
The internal display terminal (IDT, see Figure 1) allows the operator to monitor and adjust the set points of your Desert Aire system. The IDT has an LCD screen and six keys. These keys are labeled as below:... -
Page 14: Zone Setpoints
The Partial Pool set point will be shown in a similar manner when the partial pool condenser is supplied with the dehumidifier. To return to the MAIN MENU, press the Esc key. Desert Aire - CM3530 Manual... -
Page 15: Main Menu
The Unit Status will show one of the following states on the third line. • Off / Satisfied • Heating Req. • Cooling Req. • Dehum & Heat • Dehum & Cool • Low Suct. Pr Desert Aire - CM3530 Manual... -
Page 16: Occupancy Schedule
Yes, and press ENTER. The schedule will need to be setup before this will be enabled. Pressing the Prg key from this menu allows the date and time to be modified. To return to the MAIN MENU, press the Esc key. Figure 6 Desert Aire - CM3530 Manual... -
Page 17: Time Settings
Copy To: the appropriate day, and then selecting Ok? to ‘Yes’. Modify these days as appropriate. To return to the OCCUPANCY SCHEDULE MENU, press the Esc key. Figure 8 Desert Aire - CM3530 Manual... -
Page 18: Vacation Periods
Press the ENTER key again and the cursor will begin blinking over the ‘Set Override’ message. Press the UP and ENTER keys to set this override to Desert Aire - CM3530 Manual... -
Page 19: Service Menu
1234, and press ENTER. Figure 12 The SERVICE MENU gives access to Commissioning, Tuning, I/O Status, Sensor Offsets, Diagnostics and Memory Options (Figure 13). To return to the MAIN MENU, press the Esc key. Desert Aire - CM3530 Manual... -
Page 20: Commissioning
Selecting the CONFIGURATION from the Commissioning Menu displays the BLOWER SETUP screen (Figure 15). The blower can be set for either CONTINUOUS or AUTOMATIC. Only set the blower to automatic if a wall mount sensor is used. Desert Aire - CM3530 Manual... -
Page 21: Configuration-Condenser Setup
(Figure 17). This screen displays the state of the Roof open. The Force Open State will manually set the Roof Open state from the controller. To determine what the dehumidifier will do when the Roof is Open, see the next screen. Desert Aire - CM3530 Manual... -
Page 22: Configuration-Roof Open Action
Occupied or Un-Occupied modes to be forced. This allows for the Damper positions to be set for the required air flow of the dehumidifier in either state. The actual damper positions is also shown at the bottom left of this screen. Desert Aire - CM3530 Manual... -
Page 23: Current Conditions
Override to ‘On’. Insure that the superheat is stable before starting the test. Select ‘Start Test’ by pressing the UP key with the cursor over the Start Test text. After 5 minutes, the average refrigeration Desert Aire - CM3530 Manual... -
Page 24: Motor Phasing
Turning the Blower on will run the blower for 1 second to allow for the motor rotation to be checked. This is required for units connected to 3 phase electrical power. Turning the compressor on Desert Aire - CM3530 Manual... -
Page 25: Bms Setup
While BACnet can be selected for the J3 or Ethernet port, a license file will need to be loaded into the controller in order for BACnet communication to be allowed. To return to the Commissioning Menu, press the Esc key. Desert Aire - CM3530 Manual... - Page 26 Figure 24 Figure 25 Figure 26 Desert Aire - CM3530 Manual...
- Page 27 In order to prevent network faults from shutting down the dehumidifier, DHCP must be turned Off and a static IP address must be used. Consult with the system administrator for static IP addresses for all dehumidifiers. Desert Aire - CM3530 Manual...
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Page 28: Tuning-Deadbands
Pool Deadband will be displayed. This setting is subtracted from the Pool Setpoint from Section 2.2. This value will then be used as the set point to enable the auxiliary pool heating output. Desert Aire - CM3530 Manual... - Page 29 Differential: 1% RH Compressor is required when RH is over 50%. Compressor is off under 49% RH, but between 50% & 49% a requirement for the compressor depends on a rising or sinking RH. Figure 32 Desert Aire - CM3530 Manual...
- Page 30 Pool Stage Deadband: 2° F The LC pool condenser is used below the pool water set point and the aux. pool heat is required below the pool water set point minus the pool stage deadband. Figure 34 Desert Aire - CM3530 Manual...
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Page 31: Tuning-Differentials
(Figure 36). This screen shows the state of the air heat and the associated set points and temperatures. The Zone set point is settable from this screen. Press the DOWN key for the next Tuning screen. To return to the Service Menu, press the Esc key. Desert Aire - CM3530 Manual... -
Page 32: Tuning-Air Heating
Selecting the I/O Status from the STATUS MENU displays Digital Inputs, Analog Inputs, Digital Outputs and Analog Outputs selection menu. Use the UP and DOWN key to make a selection and press the ENTER key. To return to the STATUS MENU, press the Esc key. Desert Aire - CM3530 Manual... -
Page 33: Digital Inputs (Binary)
– “OK” if this contact is made, and “Flt” if this contact is open. • The fifth line will show the status of the Occupancy contact – “On” for Occupied, and “Off” for Un-Occupied. Figure 39 Desert Aire - CM3530 Manual... -
Page 34: Analog Inputs
The Analog Inputs Screens shows the state of the sensors used by the control system. The first page shows the zone sensor RH and Temperature conditions. Note that this sensor is a communicating device wired to serial port J4. Desert Aire - CM3530 Manual... - Page 35 The third page of Analog Inputs shows the readings of the suction pressure and temperature and discharge pressure. The superheat shown is a calculated value derived from the suction temperature less the P2T of the suction pressure sensor. Figure 43 Desert Aire - CM3530 Manual...
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Page 36: Digital Outputs (Binary)
“On” and “Off”. • The second line will show the status of C2, the tower pump contact, “On” and “Off”. • The third line will show the status of C3, the Supply Blower Starter, “On” and “Off”. Desert Aire - CM3530 Manual... - Page 37 The third page shows the state of the relay contacts for the pool heating control on the main controller J12 and the expansion module controller ports J11 and J12. • The first line will show the status of C6, the Auxiliary Pool Heater contact, “On” and “Off”. Desert Aire - CM3530 Manual...
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Page 38: Analog Outputs
The range of these offsets is -99.9 to 99.9. Care must be used when applying an offset to an analog value as erratic operation can result. To modify the offsets, press Desert Aire - CM3530 Manual... -
Page 39: Diagnostics
To return to the SERVICE MENU, press the Esc key. 2.3.3.7 Diagnostics (Figures 53 and 54) These screens allow the refrigerant pressure and superheat and subcooling to be watched while a specific condenser is selected for use. Turn the override on to use that condenser. Desert Aire - CM3530 Manual... -
Page 40: Memory Options
To use, select the memory to write to, if USB 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. Desert Aire - CM3530 Manual... -
Page 41: Unit Revision
The Unit Revision Screen shows the version of the application program that is running along with the release date of the software (Figure 58). This information should be passed to Desert Aire in the event a service call is necessary. Desert Aire - CM3530 Manual... - Page 42 Figure 58 Desert Aire - CM3530 Manual...
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Page 43: Alarm Menu
Figure 60 To reset the alarm, use the DOWN key until the reset instructions are shown. See Figure 61. Pressing the ALARM key for three seconds will reset all active alarms. Desert Aire - CM3530 Manual... -
Page 44: Mult Suction Pr
575 psig. The refrigerant circuit will stop and not restart until the alarm condition is reset manually. The red Alarm LED on the display will stay lit until the alarm is reset. Desert Aire - CM3530 Manual... -
Page 45: Compressor Overload
These are Automatic Reset Alarms. These alarms occur when there is an issue with the controller memory itself. If this fault cannot be reset, new controller hardware may be required. The red Alarm LED on the display will stay lit until the alarm is reset. Desert Aire - CM3530 Manual... -
Page 46: Alarm Log
ENTER key. This screen shows records of the alarm log. The bottom two lines will show the pertinent data that was recorded when the alarm occurred. Use the UP and DOWN keys to view other records. Figure 62 To return to the home screen, press the Esc key. Desert Aire - CM3530 Manual... -
Page 47: Hardware Details
Hardware Details Programmable Controller The programmable controller is preprogrammed by Desert Aire for the control of your unit. The Desert Aire replacement part number for this controller is available by calling our service department. Suction Pressure Transducer The Suction Pressure Transducer is a 0.5 – 4.5 VDC to 0 – 250 psig ratio metric device. The body is brass with a 1/4 SAE female refrigerant connection. -
Page 48: Suction Line, Liquid & Dhu Temperature Sensor
-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 49: Appendix
.1 Internal Web Page The programmable controller is preprogrammed by Desert Aire to include a web page allowing a virtual remote display to be used from any node on the facilities computer network. Simply attach an ethernet cable from your facilities computer network to the RJ45 port of the controller. - Page 50 PTIMIZING OLUTIONS HROUGH UPERIOR EHUMIDIFICATION ECHNOLOGY 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 322 2018/12...