Cm3530 Series Controller

Transcript

CM3530 Series Controller 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 The CM3530 has a built in time clock for occupied scheduling should a Building Management System (BMS) not be present Installation and Operations Manual for LC/LV Units 2 DANGER ONLY TRAINED, QUALIFIED PERSONNEL SHOULD INSTALL AND/OR SERVICE DESERT AIRE EQUIPMENT. SERIOUS INJURY, DEATH AND PROPERTY DAMAGE CAN RESULT FROM IMPROPER INSTALLATION/SERVICE OF THIS EQUIPMENT. HIGH VOLTAGE ELECTRICAL COMPONENTS AND REFRIGERANT UNDER PRESSURE ARE PRESENT. Desert Aire Dehumidification Equipment Standard Limited Warranty Desert Aire warrants the dehumidifying unit to be free from defects in materials and workmanship subject to the terms, conditions and limitations stated herein. 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. Replaced parts are warranted only for the remaining portion of the original warranty period. CONDITIONS The warranty is subject to the following conditions: 1. The unit must be properly installed and maintained in accordance with the Desert Aire “Installation and Operation Manual” provided with each unit and/or other documentation provided. 2. The Start-Up Report must be completed and returned to Desert Aire Service for evaluation. If no deficiencies are identified a Warranty Validation Letter will be issued that provides all warranty dates and coverage. If installation or start-up deficiencies are present, these must be corrected and communicated to Desert Aire in order to activate warranty. This warranty shall not apply to any part that has been tampered with, or has been subject to 3. misuse, negligence or accident. A warranty can be obtained for altered equipment but only with written consent from Desert Aire. The following parts and components are excluded from the warranty: belts, filters, driers, fuses and 4. refrigerant. Refrigerant coils or other components that corrode due to improperly balanced pool chemistry or 5. corrosive air quality will not be warranted. 6. All replacements or repairs will be FOB Germantown, WI. 7. This warranty shall be null and void if defects or damages result from unauthorized opening of the refrigerant circuit, tampering with factory set controls, or operating outside the original design conditions. Desert Aire shall not be liable for labor costs incurred in diagnosing the problem, or the removal 8. or replacement of the part or parts being repaired. Desert Aire must preauthorize all warranty coverage described herein. 9. Desert Aire - CM3530 Manual 3 Extended Warranty: Your Desert Aire unit may have extended warrantees beyond this Standard Limited Warranty document. Extended warrantees are only available at the time of the purchase of the original equipment. These extended warrantees are covered under a separate document and their terms and conditions are separate from this document. It is mentioned in this document for informational purposes only. Any Extended Warranties will be identified on the Warranty Validation Letter. Any and all incidental or consequential damages are expressly excluded from this warranty. Some states do not allow the exclusion of incidental or consequential damages for personal injury, so the above limitations may not apply to you for certain damages. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. No person or representative is authorized to make any warranty or assume any liability not strictly in accordance with the aforementioned. Inquiries regarding warranty matters should be addressed to: Desert Aire Corp c/o Service Manager N120 W18485 Freistadt Road Germantown, WI 53022 PH: (262) 946-7400 TOLL FREE: (800) 443-5276 FAX: (262) 946-7401 E-MAIL: [email protected] Additional copies of this manual can be purchased for a nominal fee from Desert Aire. Submit requests to the contact information listed above. 4 Desert Aire - CM3530 Manual 1. Installation ......................................................................................................................... 7 1.1. Humidity and Temperature Control Package .......................................................... 7 1.2. Sensor Installation ................................................................................................. 7 1.2.1. Duct-Mount Sensor ..................................................................................... 7 1.2.2. Wall-Mount Humidity and Temperature Sensor ......................................... 7 1.2.3. Water Temperature Sensor ........................................................................ 8 Auxiliary Air Heating Control Wiring ...................................................................... 8 1.3.1. Auxiliary Heating - Dry Contact Closure ................................................... 8 1.3.2. Auxiliary Heating - Proportional Signal ..................................................... 8 1.4. CM3530 Controller Overview ................................................................................. 9 2. LC / LV Controller Details ................................................................................................ 11 2.1. Menu Overview and General Instructions ............................................................... 11 2.2. Main Menu .............................................................................................................. 12 2.2.1. Status Menu ............................................................................................... 12 1.3. TABLE OF CONTENTS 2.2.1.1 Unit Status .................................................................................... 13 2.2.1.2 I / O Status .................................................................................... 14 2.2.1.2.1 Digital Inputs (Binary) .................................................... 2.2.1.2.2 Analog Inputs ................................................................. 16 2.2.1.2.3 Digital Outputs (Binary) .................................................. 17 2.2.1.2.4 Analog Outputs .............................................................. 19 2.2.1.3 Pressure Cutouts .......................................................................... 20 2.2.2. Setpoints .................................................................................................... 20 2.2.3. Occupancy Schedule ................................................................................. 22 14 2.2.3.1 Schedule Options ......................................................................... 22 2.2.3.2 Temporary Holidays ...................................................................... 23 2.2.3.3 Annual Holidays ............................................................................ 23 2.2.3.4 Temporary Occupancy .................................................................. 24 2.2.3.5 Set Time ........................................................................................ 24 2.2.4. Service Menu ............................................................................................ 25 2.2.4.1 Deadbands .................................................................................... 26 2.2.4.2 Differentials .................................................................................... 29 2.2.4.3 Air Heat Settings ........................................................................... 29 2.2.4.4 Damper Settings ........................................................................... 30 2.2.4.5 Sensor Offsets .............................................................................. 31 2.2.4.6 Condenser Settings ...................................................................... 31 2.2.5. Unit Revision ............................................................................................. 32 Desert Aire - CM3530 Manual 5 2.3. Alarm Menu ........................................................................................................... 33 2.3.1. Alarm Screen ............................................................................................ 33 2.3.2. Low Suction Pressure ................................................................................ 33 2.3.3. High Discharge Pressure .......................................................................... 34 2.3.4. Supply Air Temperature Sensor Failure ..................................................... 34 2.3.5. Zone Air Temperature Sensor Failure ........................................................ 35 2.3.6. Supply Blower Motor Overload .................................................................. 35 2.3.7. Compressor Motor Overload ....................................................................... 35 2.3.8. Smoke Alarm .............................................................................................. 36 2.3.9. Air Filter Alarm ........................................................................................... 36 2.3.10. Alarm History Screen ................................................................................. 36 3. Hardware Details .............................................................................................................. 39 3.1. Programmable Controller ........................................................................................ 39 3.2. Suction Pressure Transducer ................................................................................. 39 3.3. Discharge Pressure Transducer ............................................................................ 39 3.4. Supply Air & Suction Line Temperature Sensor ...................................................... 40 3.5. Zone Air Temperature and Relative Humidity Sensor ............................................. 40 4. Appendix ............................................................................................................................ 41 4.1. Remote Communication .......................................................................................... 41 4.1.1 BACnet Ethernet ....................................................................................... 41 4.1.2 BACnet MS/TP ........................................................................................... 45 Specifications ................................................................................................................................. 49 6 Desert Aire - CM3530 Manual 1. Installation 1.1 Humidity and Temperature Control Package 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. It features a wall-mountable remote display terminal (RDT). The RDT allows you to view and adjust set points and modes of operation. It also indicates the operating status of major components inside of the dehumidifier. The CM3530 controller also has the ability to control auxiliary equipment such as a pool or water condenser pump and auxiliary heating devices for optimum energy efficiency. Most sensors and inputs have been factory-installed and wired inside of the dehumidifier. In most cases, you need only mount and wire the zone air temperature and relative humidity sensor as well as the RDT. The RDT, which is simply an interface tool, contains no sensors. Do not install the RDT in a corrosive or wet environment. The CM3530 controller also features add-on cards that allow for network capability on LONWORKS, BACnet Ethernet, BACnet MS/TP and ModBus. 1.2 Sensor Installation The CM3530 can be ordered with a Duct Mount or a Wall Mount humidity/temperature sensor. 1.2.1 Duct-Mount Sensor Install the duct-mount sensor in the return air duct. Outdoor air intakes are not recommended in return air ducts. • Do not mount the sensor in a section of duct where false readings may occur due to turbulent air regions, solar heat gain, or thermal losses in winter. • Do not mount the sensor where water is likely to collect on it. Liquid moisture will ruin the humidity sensing element in the sensor. 1.2.2. Wall-Mount Humidity and Temperature Sensor If your dehumidifier was ordered with a wall-mount humidity and temperature sensor, mount the sensor about five feet above the pool deck on an interior wall with natural air circulation. Avoid the following locations: • Hot spots near concealed heating pipes, warm air ducts, supply register outlets, or solar radiation. • Cold spots due to a cold wall or drafts from stairwells, doors, windows, or supply register outlets. • Dead spots such as behind doors or in corners where room air cannot circulate freely. Desert Aire - CM3530 Manual 7 1.2.3 Water Temperature Sensor Desert Aire dehumidifiers ordered with the pool water heating option are supplied with a water temperature sensor and an immersion well. • Install the well into an adapter fitted into the pool water piping. The well is equipped with a 1/2” MPT connection. • Install the sensor upstream from the dehumidifier or the auxiliary pool water heater. • The sensor must be installed in a location where it will accurately sense the pool water temperature. This means you must have continuous water flow at the sensor location. 1.3 Auxiliary Air Heating Control Wiring Note: You should use the Desert Aire CM3530 control system to control or interlock with the room heating system. This prevents wide fluctuations in room air temperature by preventing the heater from trying to heat the room while the dehumidifier is running in the cooling mode. 1.3.1 Auxiliary Heating - Dry Contact Closure For Binary to External heating output options the standard Desert Aire CM3530 Controller provides a dry contact closure to operate the auxiliary space heater. The contact closes to energize a heater (may be supplied by others) which has its own power source. Install two wires from the thermostat terminal blocks on the heater to the terminal strip on the control panel of the dehumidifier. (See your wiring schematic for connection details.) NOTE: Units with an internal electric air heater have an airflow proving switch installed between the heater and the control enclosure. If an air heater is installed external to the unit, provide an external airflow proving switch for protection of the heater. 1.3.2 8 Auxiliary Heating - Proportional Signal For Analog to External heating output options Desert Aire will provide a proportional 0-10 VDC direct-acting or reverse-acting signal to modulate a heating coil control valve or other auxiliary modulating heater. Most proportional valves have either three (3) or four (4) terminals for field-installed wiring. • Four-terminal valves have two terminals for 24 VAC power and two terminals for the signal input. • Three-terminal valves have one terminal for the “hot” 24 VAC input, a second terminal for the “positive” signal input and a third, common terminal for the “neutral” 24 VAC input and the “negative” signal input. Desert Aire - CM3530 Manual You must follow the instructions included from the valve manufacturer. Observe the proper polarity or you may damage both the valve and the controller. (See your wiring schematic for connection details.) 1.4 CM3530 Controller Overview Desert Aire’s CM3530 microprocessor controller is a flexible controller with many useful features including: • Display of room air temperature, relative humidity and refrigerant pressures. • Display of equipment operating status such as dehumidification, cooling, or heating. • Display of alarms for abnormal conditions such as sensor failures or tripped safety controls. • An integrated seven-day occupancy time clock. If this time clock is used for occupancy control then the outdoor air dampers will be opened (if supplied) to bring in fresh air when the dehumidifier is in an occupied state. • A convenient, easy-to-understand display interface which allows the operator to view and change set points and time schedules. For BMS Points List, reference the Desert Aire website. • Desert Aire - CM3530 Manual 9 10 Desert Aire - CM3530 Manual 2. LC / LV Controller Details 2.1 Menu Overview and General Instructions (Figure 1) Your Desert Aire CM3530 Controller is pre-programmed and configured at the factory for use in the application you have specified. The remote display terminal (RDT - Figure 1) allows the operator to monitor and adjust the setpoints of your Desert Aire LC / LV dehumidifier. The RDT has an LCD screen and 6 keys. The keys on the left hand side of the remote terminal, top to bottom, are the ALARM key shown as an alarm bell, PROGRAM key abbreviated “Prg” and the ESCAPE key abbreviated “Esc.” The keys on the right hand side of the remote terminal, top to bottom, are the UP key shown as an up arrow, the ENTER key shown as a left arrow and the DOWN key shown as a down arrow. The Home Screen, displaying the Desert Aire logo, shows the air temperature and the current relative humidity in the zone. The LC-LV displayed in the upper right of the screen indicates that this product is an LC or LV series dehumidifier. Below this line, “Esc→Menu” indicates that if the Esc key is pressed, the Main Menu will be displayed. Pressing Esc on any other screen will take you back one screen. Menu screens allow the user to select from a series of actions. The action that is capitalized on the screen is selected by pressing the ENTER key. To cycle through the selections on a menu screen, use the UP and DOWN keys. If setpoints or selections can be altered on a screen, the ENTER key will cycle through those items. Once the cursor is over an item, the UP and DOWN arrow keys will modify the setting. Numeric values require that the ENTER key be pressed to accept the value. An “on” or “off” selection is altered as soon as the UP or DOWN keys are pressed. To view the alarms from any menu, simply press the ALARM key. The UP and DOWN keys will display any active alarm. When an alarm is triggered, the red LED behind the ALARM key will light and remains on until the alarm is acknowledged. Alarm acknowledgement and history instructions are shown on the main Alarm Screen. To escape from the alarm screens, press the Esc key and the Home Screen will be displayed. Screens which display a small up arrow in the upper right and a small down arrow in the lower right are part of a series of screens which can be accessed by pressing either the UP or DOWN arrow keys. If the operator has not pressed a key for an hour, the remote terminal will return to the Home Screen. Desert Aire - CM3530 Manual 11 2.2 Main Menu (Figure 2) Pressing the Esc key from the Home Screen displays the MAIN MENU (Figure 2). This menu allows the operator to select the STATUS MENU, Unit Setpoints, change the Occupancy Schedule, select the Service Menu or view the Unit Revision. To return to the Home Screen, press the Esc key. 2.2.1 12 Figure 1 Desert Aire - CM3530 Manual Figure 2 Status Menu (Figure 3) Selecting the STATUS MENU from the MAIN MENU allows access to the UNIT STATUS, I/O Status and Pressure Cutouts screens. To return to the MAIN MENU, press the Esc key. Figure 3 2.2.1.1 Unit Status (Figure 4) Selecting Unit Status from the STATUS MENU displays a text explanation of the unit. The ROC Available or ROC Unavailable is shown on the first line of this display. This is based on the state of digital input #7. A water flow switch or a jumper will determine if a remote condenser is available for heat rejection. The Occupied state (either Occupied or Un-Occupied) is shown on the second line. The Unit Status will show one of the following states on the third line. • • • • • • The fourth line displays if the compressor is on or off, and if the compressor is waiting for its non-short cycling timer to time out. The fifth will display the air or water priority, but only if pool heating is available. To return to the STATUS MENU, press the Esc key. Unit Off / Satisfied Heating Required Cooling Required Dehumidifying Dehumid / Heat Dehumid / Cool Desert Aire - CM3530 Manual 13 Figure 4 2.2.1.2 I/O Status (Figure 5) Selecting the I/O Status from the STATUS MENU displays Digital Inputs, Analog Inputs, Digital Outputs and Analog Outputs selection menu. Use the Up or Down key to make a selection and press the Enter key. To return to the STATUS MENU, press the Esc key. Figure 5 2.2.1.2.1 Digital Inputs (Binary) (Figure 6 & 7) The Digital Inputs Screen shows the state of the contacts wired into port J4 of the controller. This screen is provided for troubleshooting the control system. • Input 1 will show the status of the supply blower motor starter auxiliary contact. “On” if the contact is closed, and “Off” if the contact is open. • Input 2 will show the status of the supply blower motor overload contacts - “On” if no overload is 14 Desert Aire - CM3530 Manual present, and “Off” if an overload exists. • Input 3 will show the status of the compressor motor(s) overload contact(s) - “On” if no overload is present, and “Off” if an overload exists. • Input 4 will show the status of the Digital Occupied Contact - “On” if this contact is made, and “Off” if this contact is open. • Input 5 will show the status of the smoke alarm contact - “On” if no alarm is present, and “Off” if an alarm condition exists. • Input 6 will show the status of the manual system shutdown switch - “On” in the running position, and “Off” if the switch is opened to manually stop the unit. • Input 7 will show the status of the water condenser flow switch - “On” if there is water flow, and “Off” if no flow is present. Note that this may be manually jumped if a remote air cooled condenser is installed. To return to the I/O STATUS screen, press the Esc key. Figure 6 If Pool heating or a filter switch is supplied on the unit, the up and down arrows will be displayed on this screen and the Expansion Board Inputs screen will be available (Figure 7). Press the UP or DOWN key to display figure 7. This screen is provided for troubleshooting the control system. • Exp Input 1 will show the status of the pool water flow switch. “On” if there is water flow, and “Off” if no flow is present. Desert Aire - CM3530 Manual 15 • Exp Input 2 will show the status of the partial pool water flow switch. “On” if there is water flow, and “Off” if no flow is present. • Exp Input 3 will show the status of the filter switch. “On” if the filter pressure is high, indicating a clogged condition, and “Off” if the filter is low. 2.2.1.2.2 16 Desert Aire - CM3530 Manual Figure 7 Analog Inputs (Figures 8 and 9) These screens are provided for troubleshooting the control system. The Analog Inputs Screen (Figure 8) shows the current readings of the Supply Air Temperature, Suction Line Temperature, Zone Air Temperature, Zone Air Humidity, Suction Pressure and Discharge Pressure of the refrigerant circuit. Figure 8 If Pool heating is supplied on the unit, the up and down arrows will be displayed on this screen and the Expansion Board Analog Inputs screen will be available (Figure 9). Press the UP or DOWN key to display figure 9. This screen is provided for troubleshooting the control system. The Pool Water Temperature and the Partial Pool Water Temperature are displayed on this screen. Points 3 and 4 are not used at this time. To return to the I/O STATUS screen, press the Esc key. Figure 9 2.2.1.2.3 Digital Outputs (Binary) (Figure 10) This screen is provided for troubleshooting the control system. The Digital Output Screen (Figure 10) will show the state of the devices wired into ports J12, J13 and J14 of the main controller. • • • • • • Output 1 will show the status of the supply blower motor contactor. Output 2 will show the status of the compressor contactor. Output 3 will show the status of the reheat solenoid coil. Output 4 will show the status of the second air heat stage. Output 5 will show the status of the occupancy of the unit. Output 6 will show the status of the alarm indication or the tower water pump, depending on the setup of the controller. Desert Aire - CM3530 Manual 17 • To return to the I/O STATUS screen, press the Esc key. Output 7 will show the status of the first air heat stage. Figure 10 If Pool heating or a filter switch is supplied on the unit, the up and down arrows will be displayed on this screen and the Expansion Board Outputs screen will be available (Figure 11). Press the UP or DOWN key to display figure 11. This screen is provided for troubleshooting the control system. • • • • 18 Desert Aire - CM3530 Manual Output 1 will show the status of the pool water solenoid valve. Output 2 will show the status of the partial pool water solenoid valve. Output 3 will show the status of the auxiliary pool heat contact. Output 4 will show the status of the pool pump contact. Figure 11 2.2.1.2.4 Analog Outputs (Figure 12) This screen is provided for troubleshooting the control system. The Analog Outputs Screen shows the following. • • • The superheat of the refrigerant circuit is shown on this screen as it is the calculated output of the actual suction temperature minus the temperature derived from the suction pressure at saturated conditions. This is shown for troubleshooting the refrigerant circuit. Superheat should be a minimum of 12 degrees; see unit Start-Up Report for adjustment guidelines. To return to the I/O STATUS screen, press the Esc key. Y1 – Air Heating Control Command Y2 – Evaporator Bypass Actuator Command Y3 – Outdoor Air Damper Actuator Command Figure 12 Desert Aire - CM3530 Manual 19 2.2.1.3 Pressure Cutouts (Figure 13) This screen displays the High Discharge Pressure and Low Suction pressure cut-out values for the refrigerant circuit. (NOTE: The operator cannot change these settings.) To return to the STATUS MENU, press the Esc key. 2.2.2 Setpoints (Figure 14) Selecting the Unit Setpoints from the MAIN MENU allows for modifications of the temperature and humidity setpoints specific to the unit. To modify the setpoints, press the ENTER key and use the arrow keys until the desired setting is shown. Press the ENTER key to accept the setpoint value. To return to the MAIN MENU, press the Esc key. 20 Figure 13 Desert Aire - CM3530 Manual Figure 14 If pool heating is included in the unit, the text at the bottom of the screen will be displayed. Press the DOWN key to display Figure 15. Select the appropriate item with the UP and DOWN keys and press the ENTER key to select. To return to the MAIN MENU, press the Esc key. Figure 15 If partial pool heating is included in the unit, the text at the bottom of the screen will be displayed. Press the DOWN key to display Figure 16. Select the appropriate item with the UP and DOWN keys and press the ENTER key to select. To return to the MAIN MENU, press the Esc key. Figure 16 Desert Aire - CM3530 Manual 21 2.2.3 Occupancy Schedule (Figure 17) Selecting the OCCUPANCY SCHEDULE will display figure 17. From this menu you can access and adjust the Schedule Options, Temporary Holidays, Annual Holidays, set a Temporary Occupancy or adjust the Time Settings. Figure 17 2.2.3.1 Schedule Options (Figure 18) This screen sets the number of active occupancy schedules. Setting at least one active schedule allows the occupancy schedule timing to be set from the Current Schedule Screen. If the number of active schedules is left at zero, no occupancy scheduling will be active. To return to the OCCUPANCY SCHEDULE MENU, press the Esc key. 22 Desert Aire - CM3530 Manual Figure 18 2.2.3.2 Temporary Holidays (Figure 19) The Temporary Holiday settings are for holidays that change dates from year to year, such as Memorial Day or Thanksgiving. Up to 10 different temporary holidays can be set from this screen. Select the number to assign to the Annual Holiday and then select the Start Date and the End Date for that holiday. To return to the OCCUPANCY SCHEDULE MENU, press the Esc key. Figure 19 2.2.3.3 Annual Holidays (Figure 20) The Annual Holiday settings are for holidays with dates that remain constant year to year, such as New Years Day and the 4th of July. Up to 10 different annual holidays can be set from this screen. Select the number to assign to the Annual Holiday and then select the Start Date and the End Date for that holiday. To return to the OCCUPANCY SCHEDULE MENU, press the Esc key. Figure 20 Desert Aire - CM3530 Manual 23 2.2.3.4 Temporary Occupancy (Figure 21) This screen allows the unit to be set to the occupied mode for a preset amount of time. Press the ENTER key and enter the hours you would like the unit to be temporarily in the occupied mode. Press the ENTER key again and enter the minutes you would like the unit to be temporarily in the occupied mode. Press the ENTER key again and the cursor will begin blinking over the “Press Prg to set” message. Pressing the Prg key will override the schedule and allow the unit to be temporarily occupied. The screen will now show “Override On.” To clear this occupied override, set the hours and minutes to zero and press the Prg key. The screen will now show “Override Off.” To return to the OCCUPANCY SCHEDULE MENU, press the Esc key. Figure 21 2.2.3.5 Set Time (Figure 22) This screen sets the time, date and day of week. To modify these settings, press the ENTER key until the cursor is over the appropriate item and use the arrow keys until the desired setting is shown. All times are set in the 24 hour format. Pressing the ENTER key will step to the next item. If any item was modified, the message “Enter to Set” will be shown. Press the ENTER key to accept the time and date values. 24 Desert Aire - CM3530 Manual To return to the OCCUPANCY SCHEDULE MENU, press the Esc key. 2.2.4 Figure 22 Service Menu (Figure 23 and 24) Selecting the SERVICE MENU will display the Login Screen (Figure 23). Enter the service password, 1234, and press ENTER. Figure 23 The SERVICE MENU gives access to the DEADBANDS & DIFFS, Air Heating Settings, Damper Settings, Sensor Offsets and Condenser Settings screens. (Figure 24) Desert Aire - CM3530 Manual 25 Figure 24 To return to the Main Menu, press the Esc key. The user remains logged in for 10 minutes after the password is entered. During this time, the Login screen reads “Still Logged In, Press PRG to Enter.” Within this 10 minute log-in, the service menu may be re-entered by simply pressing the Prg key. 2.2.4.1 Deadbands (Figure 25) The default settings for the Deadbands can be modified on this screen. The Heating Deadband value is subtracted from the Zone Temperature Setpoint from section 2.2.2. This value is the heating setpoint that enables the aux air heating output. It is also the heating setpoint for the Air Heating PID loop. The Cooling Deadband value is added to the Zone Temperature Setpoint. This value is the cooling setpoint. When the zone temperature exceeds this value, the compressor is required to be used for zone cooling. 26 If the Pool Heating or Partial Pool options are enabled in the factory configuration, the Pool Deadband will be displayed. This setting is subtracted from the Pool Setpoint from section 2.2.2. This value will then be used as the setpoint to enable the auxiliary pool heating output. To modify settings, press the ENTER key until the desired setpoint is selected and use the arrow keys until the desired value is shown. Press the ENTER key to accept setpoint value. See the graphs in Figures 26 through 28 for an illustration of the operation of the deadbands and differentials. Figure 26 details the humidity control. It details that dehumidification is activated when the zone relative humidity is above the setpoint and is deactivated when the zone relative humidity falls below the setpoint less the differential. Figure 27 details the heating and cooling control. It details that cooling is activated when the zone temperature is above the zone cooling setpoint and is deactivated when the zone temperature falls below the setpoint less the differential. Heating is activated when the zone temperature falls below the zone heating Desert Aire - CM3530 Manual setpoint and is deactivated when the zone temperature rises above the heating setpoint plus the differential. Figure 28 details the pool heating control. To return to the SERVICE MENU, press the Esc key. Figure 25 Zone Relative Humidity LC/LV Humidity Control 50% 45% Compressor Required for Dehumidification Compressor Off Time Setpoint = 50% RH Differential = 5% RH Compressor is required when RH is over 50%. Compressor is off under 45% RH, but between 50% & 45% a requirement for the compressor depends on a rising or sinking RH. Figure 26 Desert Aire - CM3530 Manual 27 Zone Temperature Control Zone Temperature Zone Temperature (°F) 86° 85° 84° 83° Cooling Setpoint = Unit Setpoint + Cooling Deadband Cooling Setpoint - Differential Unit Setpoint Heating Setpoint + Differential Heating Setpoint = 82° Unit Setpoint - Heating Deadband Zone Temperature Compressor and Heating Off Heating Required Compressor Required for Cooling Time Unit Setpoint: 84° F Cooling Deadband: 2° F Cooling Differential: 1° F Heating Deadband: 2° F Heating Differential: 1° F The cooling requirement is on above (84° F + 2° F) or 86° F and the cooling requirement is off below (86° F - 1° F) or 85° F. The heating requirement is on below (84° F - 2° F) or 82° F and the heating requirement is off above (82° F + 1° F) or 83° F. Figure 27 Pool Water Temperature (°F) Pool Water Temperature Control 85° Pool Water Setpoint Pool Water Setpoint - Differential 84° 83° Pool Water Setpoint - Pool Stage Deadband = Aux. Pool Heat Required Aux. Pool Heating Required Differential 82° No Pool Heating Required LC Pool Condenser Heating Only LC Pool Condenser & Aux. Heating Required Time Pool Water Setpoint: 85° F Pool Differential: 1° F Pool Stage Deadband: 2° F The LC pool condenser is used below the pool water setpoint and the aux. pool heat is required below the pool water setpoint minus the pool stage deadband. Figure 28 28 Desert Aire - CM3530 Manual 2.2.4.2 Differentials (Figure 29) This screen shows the Heating, Cooling and Humidity Switch Differentials. This differential is the range between the making and breaking of the switch. The range of the Cooling and Heating Differential is 0.0° F to 9.9° F. The range of the Humidity Differential is 0.0% to 9.9%. If the Pool Heating or Partial Pool options are enabled in the factory configuration, the Pool and Partial Pool switch differentials are also displayed. The range of the Pool and Partial Pool Differentials are 0.0° F to 9.9° F. To modify the differentials, press the ENTER key and use the arrow keys until the desired setting is shown. Press the ENTER key to accept setpoint value. See the graphs in Figures 26 through 28 for an illustration of the operation of the heating, cooling, dehumidification and pool heating modes. To return to the SERVICE MENU, press the Esc key. Figure 29 2.2.4.3 Air Heat Settings (Figure 30) Selecting the Air Heat Settings Screen (Figure 30) allows the Air Heat PID Gain (or Proportional Band), Reset (or Integral) and the Rate (or Derivative) to be modified for loop tuning. The range of the Gain is 0.0° to 999.9° F. The range of the Reset is 0 to 999. The range of the Rate is 0 to 999. To modify these setpoints, press the ENTER key and use the arrow keys until the desired setting is shown. Pressing the ENTER key will now change the setpoint. The heating setpoint, actual zone temperature, heating requirement and the output of this modulating control loop are displayed at the bottom of this screen for reference. To return to the SERVICE MENU, press the Esc key. Desert Aire - CM3530 Manual 29 Figure 30 2.2.4.4 Damper Settings (Figure 31 and 32) If the unit has no outdoor air box, selecting the Damper Settings will display the screen shown in Figure 31. This allows the Evaporator Bypass Damper Command to be modified. To modify this setting, press the ENTER key and use the arrow keys until the desired setting is shown. Pressing the ENTER key will now change the setpoint. To return to the SERVICE MENU, press the Esc key. Figure 31 If the unit has an outdoor air box, selecting the Damper Settings will display the screen shown in Figure 32. This screen allows for modification of the Outdoor Air and Evaporator Bypass damper settings in the Occupied and Unoccupied modes (Figure 32). To modify these setpoints, press the ENTER key and use the arrow keys until the desired setting is shown. Pressing the ENTER key will now change the setpoint. 30 Desert Aire - CM3530 Manual Figure 32 To return to the SERVICE MENU, press the Esc key. 2.2.4.5 Sensor Offsets (Figure 33) These screens allow the control values of the analog input points to be adjusted if calibration shows these devices to be inaccurate. 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 the ENTER key until the desired offset is selected and use the arrow keys until the desired setting is shown. Press the ENTER key to accept the offset value. To return to the SERVICE MENU, press the Esc key. Figure 33 2.2.4.6 Condenser Settings (Figure 34) The Condenser Setting screen displays the condenser water flow switch delay time as well as the state of the remote outdoor condenser. After the remote outdoor condenser is installed, change the “ROC is disabled” to “ROC is Desert Aire - CM3530 Manual 31 enabled’. This will allow the compressor to start and continue to run if the jumper on terminals 2051 and 2231 is installed. For a water cooled condenser, wire the flow switch to terminals 2051 and 2231 to confirm water flow, instead of installing a jumper. The switch delay is the number of seconds that the compressor will run without the flow switch confirming water flow in the remote condenser. To modify the time delay press the ENTER key and use the arrow keys until the desired setting is shown. To enable the ROC press the ENTER key until the cursor is over the disabled and use the arrow keys to toggle between disabled and enabled. Press the ENTER key again when finished to accept the change. To return to the SERVICE MENU, press the Esc key. 2.2.5 Unit Revision (Figure 35) The Unit Revision Screen shows the version of the application program that is running along with the release date of the software. (Figure 35) This information should be passed to Desert Aire in the event a service call is necessary. 32 Desert Aire - CM3530 Manual Figure 34 Figure 35 To return to the MAIN MENU, press the Esc key. 2.3 Alarm Menu Alarms are either Automatic Reset or Manual Reset. Automatic Reset Alarms are alarms that allow the unit and/or circuit to return to operation once the operating parameter has been returned to acceptable operating conditions. The unit and/or circuit will restart automatically; however, the red Alarm LED will remain illuminated until acknowledged to alert the operator the alarm occurred. Manual Reset Alarms are alarms that stop the unit and/or circuit and do not restart until the alarm is acknowledged and the alarm condition is reset manually on the Alarm Screen. The red Alarm LED will stay illuminated until the alarm is acknowledged AND the alarm condition is reset. 2.3.1 Alarm Screen (Figure 36) The ALARM MENU can be accessed anytime by pressing the ALARM button. The main alarm screen includes the instructions for viewing and resetting the alarms, as well as a means to access the alarm history page. Pressing the ENTER button while viewing this alarm screen or the active alarm will reset any alarm that has returned to its safe state. Any active alarm can be viewed by pressing the DOWN key from this page. If no active alarms are shown, no alarms are active. To view the Alarm History Screen, press the ALARM button. To return to the home screen, press the Esc button. Figure 36 2.3.2 Low Suction Pressure (Figure 37) This is a Manual Reset Alarm. The Low Suction Pressure Alarm will only be activated when the Suction Pressure falls below the Low Suction Pressure Cutout point three times in a one hour period. The refrigeration circuit will stop and not restart until the suction pressure rises above 106.0 psig and the alarm is reset manually. The Low Suction Pressure Trip Setpoint is normally 58.0 psig. When the compressor is started and for the first 90 seconds of the compressor running, the Low Suction Pressure Trip Setpoint is set to 22.0 psig. This is to avoid any nuisance tripping due Desert Aire - CM3530 Manual 33 to low ambient conditions. The first and second conditions of the suction pressure falling below the Low Suction Pressure Trip Setpoint in a one hour period will stop the compressor but not activate the alarm. The compressor will restart when the suction pressure rises above 106.0 psig. The red ALARM LED on the display will stay lit until the alarm is reset. 2.3.3 High Discharge Pressure (Figure 38) This is a Manual Reset Alarm. The High Discharge Pressure Alarm is activated when the Discharge Pressure rises above the High Pressure Cutout point (See Section 2.2.1.3). 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. 2.3.4 34 Desert Aire - CM3530 Manual Figure 37 Figure 38 Supply Air Temperature Sensor Failure This is an Automatic Reset Alarm. Supply Air Temperature Sensor Failure is active if the supply air temperature sensor is in a shorted or open condition. In this state, the unit will stop and not restart until the alarm condition is cleared. The red ALARM LED on the display will stay lit until the alarm is acknowledged, even after the alarm condition is cleared, to alert the operator the alarm occurred. 2.3.5 Zone Air Temperature Sensor Failure This is an Automatic Reset Alarm. A Zone Air Temperature Sensor Failure is active if the zone air temperature sensor is in a shorted or open condition. In this state, the unit will stop and not restart until the alarm condition is cleared. Take the unit out of ‘occupied’ mode if there is a problem with this sensor. The red ALARM LED on the display will stay lit until the alarm is acknowledged, even after the alarm condition is cleared, to alert the operator the alarm occurred. 2.3.6 Supply Blower Motor Overload (Figure 39) This is a Manual Reset Alarm. The Supply Blower Motor Overload Alarm is activated when the supply blower motor overload device indicates an overloaded condition. In this state, the unit 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. 2.3.7 Figure 39 Compressor Motor Overload (Figure 40) This is a Manual Reset Alarm. The Compressor Motor Overload Alarm is activated when the compressor motor overload device indicates an overloaded condition. In this state, 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 35 Figure 40 2.3.8 Smoke Alarm This is an Automatic Reset Alarm. The Smoke Alarm is activated if the alarm contact wired to digital input DI5 is opened. In this state, the unit will stop and not restart until the smoke alarm contact closes. The red ALARM LED on the display will stay lit until the alarm is acknowledged, even after the alarm condition is cleared, to alert the operator the alarm occurred. 2.3.9 Air Filter Alarm This is an Automatic Reset Alarm. The Air Filter Alarm is activated if the filter switch wired to digital input 3 on the expansion board closes. In this state, the unit will remain running and indicate an alarm condition by lighting the red ALARM LED. The red ALARM LED on the display will stay lit until the alarm is acknowledged, even after the filter switch opens, to alert the operator the alarm occured. 2.3.10 Alarm History Screen (Figure 41) The Alarm History Screen is accessible from the Alarm Screen by pressing the ALARM button. This screen lists a history of the last 100 alarms, by time and date. The most recent alarm will be displayed as 001 along with the Zone Air Temperature, Zone Relative Humidity, Supply Air Temperature, Suction Pressure, Discharge Pressure and the status of the unit when the alarm occurred. The status numbers indicated are: 36 Desert Aire - CM3530 Manual 0 – Off or Unit Satisfied 1 – Heating Mode 2 – Cooling Mode 3 – Dehumidifying 4 – Dehumidification & Heating 5 – Dehumidification & Cooling To access the history of alarms, press the DOWN key. The last 100 alarm conditions are saved in this history with the 101st being overwritten. Figure 41 Desert Aire - CM3530 Manual 37 38 Desert Aire - CM3530 Manual 3 Hardware Details 3.1 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. 3.2 Suction Pressure Transducer The Suction Pressure Transducer is a 0.5 - 4.5 VDC to 0 - 250 psig ratiometric device. The body is brass with a 1⁄4 SAE female refrigerant connection. This transducer must be supplied with 4.5 to 5.5 VDC power. A display reading of 0.0 psig for the transducer indicates the device is disconnected or defective. For this device to function, 5.0 VDC must be present from the black to green wires on the transducer. To verify the output of the transducer, measure the DC voltage (should read between 0.5 to 4.5 VDC) from the white to green wires on the transducer and use this voltage in the following formula to determine the pressure (0-250 psig). Pressure (psig) = (62.5)*(V) – 31.25 Example, if V = 2.50 VDC, then; Pressure (psig) = (62.5)*(2.50) – 31.25 = 156.25 – 31.25 = 125 psig. The Suction Pressure Transducer’s replacement part number is available from Desert Aire by calling our service department. 3.3 Discharge Pressure Transducer The Discharge Pressure Transducer is a 0.5 - 4.5 VDC to 0 - 652 psig ratiometric device. The body is brass with a 1⁄4 SAE female refrigerant connection. This transducer must be supplied with 4.5 to 5.5 VDC power. A display reading of 0.0 psig for the transducer indicates the device is disconnected or defective. For this device to function, 5.0 VDC must be present from the black to green wires on the transducer. To verify the output of the transducer, measure the DC voltage (should read between 0.5 to 4.5 VDC) from the white to green wires on the transducer and use this voltage in the following formula to determine the pressure (0-652psig). Pressure (psig) = (163)*(V) – 81.5 Example, if V = 2.50 VDC, then; Pressure (psig) = (163)*(2.50) – 81.5 = 407.5 – 81.5 = 326 psig. The Desert Aire replacement part number for the Discharge Pressure Transducer is available by calling our service department. Desert Aire - CM3530 Manual 39 40 3.4 Supply Air & Suction Line Temperature Sensor The Supply Air and Suction Line Temperature Sensor is a resistive NTC Bulb type device with a 10 foot cable. The temperature range is -58.0° to 212.0° F and the environmental rating is IP67. The failure mode of this device will display a reading of -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. 3.5 Zone Air Temperature and Relative Humidity Sensor The Zone Air Temperature and Relative Humidity Sensor is provided as either a duct or wall mount device. The failure mode of the temperature sensor internal to this device will display a reading of -623.3° F if the sensor is open, and display a reading of 687.3° F if the sensor is shorted. A reading of 0.0% humidity indicates a failure of the RH sensor. The Desert Aire replacement part number for the Zone Air Temperature and Relative Humidity Sensor is available by calling our service department. Desert Aire - CM3530 Manual 4 Appendix 4.1 Remote Communication 4.1.1 BACnet Ethernet Setting IP Address Via the PGD • Hold the alarm button and the enter button for 5 seconds. The following screen will appear. • Select OTHER INFORMATION and the following screen will appear. • Figure 42 Figure 43 Select PCOWEB/NET CONFIG and the following screen will appear. Desert Aire - CM3530 Manual 41 • Select PCOWEB settings and the screen will prompt you to set the DHCP and the IP address. DHCP should be set to off. Set IP address as instructed by Controls contractor. 42 Desert Aire - CM3530 Manual • Figure 44 Figure 45 After the IP address has been set the screen will switch to the following page. Set the Netmask as well as the Gateway addresses. The Netmask and the Gateway addresses will be provided by the Controls contractor. • After this is complete the screen will switch to the following page. If multiple DNS addresses are required they would be entered here. This is not common. The Controls contractor would also need to provide these addresses. • Figure 46 Figure 47 Next you will see the BACnet ID and BACnet Type screen. This is also very rarely used however, if necessary, needs to be provided by the Control contractor. Set appropriately. Desert Aire - CM3530 Manual 43 • The controller will then prompt you to save the changes. Select YES and hit enter. 44 Desert Aire - CM3530 Manual • Figure 48 Figure 49 The controller will then verify that the update was complete and ask you to reboot the pCOnet. Cycle power to the dehumidifier. • Figure 50 Addressing is now complete 4.1.2 BACnet MS/TP Setting MS/TP Addressing Via the PGD • Hold the alarm button and the enter button for 5 seconds. The following screen will appear. • Figure 51 Select OTHER INFORMATION and the following screen will appear. Desert Aire - CM3530 Manual 45 • Select PCOWEB/NET CONFIG and the following screen will appear. 46 Desert Aire - CM3530 Manual • Figure 52 Figure 53 Select PCONET settings and the screen will prompt you to set the Device Instance and Baud Rate. Set as instructed by Controls contractor. • After the baud rate has been set the screen will switch to the following page. Set the BACnet MAC address as well as the Max Master and Max Info Frames. The MAC address will be provided by the Controls contractor. Default values for the Max Master is 127 and Max Frames is 20. • Figure 54 Figure 55 The controller will then prompt you to save the changes. Select YES and hit enter. Desert Aire - CM3530 Manual 47 • The controller will then verify that the update was complete and ask you to reboot the pCOnet. Cycle power to the dehumidifier. 48 • Figure 56 Addressing is now complete Desert Aire - CM3530 Manual Figure 57 Desert Aire - CM3530 Manual 49 50 Desert Aire - CM3530 Manual Desert Aire - CM3530 Manual 51 Optimizing Solutions Through Superior Dehumidification Technology N120 W18485 Freistadt Road • Germantown, WI 53022 • E-mail: [email protected] Ph: (262) 946-7400 • Fax: (262) 946-7401 • Website: www.desert-aire.com 52 322 2016/03