Desert Aire CM3510 Series User manual

Installation and Operation Manual for SA Units
• Backlit LCD User
Interface
• Programmed by
Desert Aire for
dehumidification and
temperature control
• Multiple communication
interface options:
- LonWorks®
- BACnet™ Ethernet
- BACnet™ MS/TP
- Modbus®
• Alarm history retention
• Internal time clock for
stand alone operation
CM3510 Series
Controller
Installation and Operation Manual for SA Units
• Backlit LCD User
Interface
• Programmed by
Desert Aire for
dehumidication and
temperature control
• Multiple
communication
interface options:
- LonWorks®
- BACNetTM Ethernet
- BACNetTM MS/TP
- Modbus®
• Alarm history
retention
• Internal time clock
for stand alone
operation

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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
Dehumidication 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
  decienciesareidentiedaWarrantyValidationLetterwillbeissuedthatprovidesallwarranty
  datesandcoverage.Ifinstallationorstart-updecienciesarepresent,thesemustbecorrected
and communicated to Desert Aire in order to activate warranty.
3. This warranty shall not apply to any part that has been tampered with, or has been subject to
misuse, negligence or accident. A warranty can be obtained for altered equipment but only with
written consent from Desert Aire.
4. The following parts and components are excluded from the warranty: belts, lters, driers, fuses and
refrigerant.
5. Refrigerant coils or other components that corrode due to improperly balanced pool chemistry or
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.
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8. Desert Aire shall not be liable for labor costs incurred in diagnosing the problem, or the removal
or replacement of the part or parts being repaired.
9. Desert Aire must preauthorize all warranty coverage described herein.
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
identied 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 specic 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: [phone]
TOLL FREE: [phone]
FAX: [phone]
E-MAIL: [email protected]
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.
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ProductWarningfortheStateofCalifornia:
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TABLEOFCONTENTS
1. Installation ................................................. ...................................... ...... ................ 9
1.1 Introduction ........................................................ ............................................. .. 9
1.2 Sensor Installation ............................................. . ........................... ......................... 9
1.2.1 Unit Mounted Sensor .................. ............................................................ 9
1.2.2 Wall Mount Humidity and Temperature Sensor ........................................ 10
1.2.3 Water Temperature Sensors ............... ........................... .................. ......... 10
1.2.4 Outdoor Air Mounted Humidity and Temperature Sensor .......................... 10
1.3 Auxiliary Air Heating Control Wiring ................................. ...................................... 10
1.3.1 Auxiliary Heating - Dry Contact Closure ............................ ........................ 10
1.3.2 Auxiliary Heating - Proportional Signal ............................ .... ......... ............. 11
1.4 CM3510 Controller Overview ............................ ........... .................................... ..... 11
2. Controller Details ................................................. ...................................... ...... ....... 12
2.1 Menu Overview and General Instructions (Figure 1) ............................................... 12
2.2 Zone Setpoints (Figure 2) ........................................................................................ 13
2.3 Main Menu (Figure 4) ............................................................................................... 14
2.3.1 Unit Status (Figure 5) .................................................................................. 15
2.3.2 Occupancy Schedule (Figure 10) ............................................................ 17
2.3.2.1 Time/Date (Figure 11) .................................................................................. 18
2.3.2.2 Daily Events (Figure 12) .............................................................................. 18
2.3.2.3 Vacation Periods (Figure 13) ....................................................................... 19
2.3.2.4 Special Days (Figure 14) ............................................................................. 19
2.3.2.5 Temporary Occupancy (Figure 15) ............................................................. 19
2.3.3 Service Menu (Figures 16 and 17) ........................................................... 20
2.3.3.1 Commissioning (Figure 18) ......................................................................... 21
2.3.3.1.1 Conguration (Figure 19) .......................................................................... 21
2.3.3.1.3 Exhaust Blower Setup (Figure 31) ............................................................ 26
2.3.3.1.4 Airow Setup (Figure 36) .......................................................................... 29
2.3.3.1.5 BMS Setup (Figures 45 through 52) ......................................................... 33
2.3.3.2 Tuning – Dead Bands (Figure 53) .............................................................. 36
2.3.3.2.2 Tuning – Energy Recovery (Figure 55) ................................................... 37
2.3.3.2.3. Tuning – Pool Settings (Figures 56 & 57) ................................................. 38
2.3.3.2.4. Tuning – Air Heating (Figures 58 - 61) .................................................... 39
2.3.3.2.5. Tuning – Outdoor Air Pre-Heating (Figures 62 & 63) .............................. 40
2.3.3.2.6. Tuning – Maximum Outdoor Air (Figure 64) ............................................ 41
2.3.3.3 I/O Status (Figure 65) ................................................................................. 42
2.3.3.3.1 Digital Inputs (Binary) (Figures 66 - 80) .................................................... 42
2.3.3.3.2 Analog Inputs (Figures 69 thru 77) .......................................................... 45
2.3.3.3.3 Digital Outputs (Binary) (Figures 78 - 81) ................................................ 48
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2.3.3.3.4 Analog Outputs (Figures 82 - 83) ............................................................. 50
2.3.3.4 Sensor O󰀨sets (Figures 84 - 91) ................................................................ 51
2.3.3.5 Memory Options (Figures 92 - 94) .............................................................. 55
2.3.4 Unit Revision (Figures 95) ......................................................................... 55
3 Alarm Menu ............................................................................................................. 56
3.1 System Alarms ........................................................................... ........ ..................... 57
3.2 EEV Alarms ............................................................................................................ 57
3.3 Alarm Log (Figure 99) .............................................................................................. 57
4 Hardware Details .................................................................................................... 58
4.1 Programmable Controller ...................................................................... ................... 58
4.2 Suction Pressure Transducers .............................................................. ................... 58
4.3 Discharge & Liquid Pressure Transducers ............................................ ................... 58
4.4 Suction, Liquid, Pool & Supply Air Temperature Sensors......................................... 59
4.5 Zone and Outdoor Air Temperature and Relative Humidity Sensors ....................... 59
4.6 Di󰀨erential Air Pressure Sensors ............................................................................. 59
5 Appendix .................................................................................................................. 59
5.1 Internal web page .................................................................................................... 59
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1. Installation
1.1 Introduction
Your Desert Aire controller is designed for precise monitoring and control of air temperature
and relative humidity (RH) within a conditioned environment.
This CM3510 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
setpoints. It also indicates the operating status of major components inside of the dehumidi-
er. The CM3510 controller also has the ability to control auxiliary equipment such as a pool
water or tower water pumps and auxiliary heating devices for optimum energy e󰀩ciency.
Most sensors and devices have been factory-installed and wired inside of the dehumidier. In
most cases, only connection to a remote condenser, electrical power connection, the supply
air temperature sensor and an Ethernet connection to the facilities computer network are
required. For units requiring a wall mounted zone air temperature and relative humidity sensor,
wiring of this sensor to the unit will be required. An outdoor air sensor will be mounted in the air
hood of units rated for outdoor duty. For indoor units, this sensor will need to be mounted in an
outdoor area and wired as well. Also, units with a pool condenser will require temperature
sensors be wired in the pool water piping.
The control system includes a web page which allows a virtual display terminal to be accessed
from any device on the computer network. Simply browse to the IP address assigned to the
dehumidier, enter the appropriate credentials, [user – Desert-Aire, password – 18485] and
select the DISPLAY tab. Logging is also available from this web page.
The CM3510 controller also features optional building automation access. This includes
options for network connect ability including BACnet IP, BACnet MS/TP, ModBus RTU and
ModBus IP.
1.2 Sensor Installation
The CM3510 control system is normally provided with a unit mounted combination
relative humidity and temperature sensor. This sensor provides accurate control with-
out the problems associated with wall-mounted sensors, such as faulty readings due to
hot spots or drafts. The supply air temperature sensor will be required to insure proper
operation of the air heating system. If a pool water condenser has been provided in the
dehumidier, pool water temperature sensors will need to be installed in the water
piping.
1.2.1 Unit Mounted Sensor
This sensor is factory mounted in the return air duct upstream of any outdoor air
intakes.
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 1.2.2 WallMountHumidityandTemperatureSensor
If your dehumidier was ordered with a wall-mount humidity and temperature sensor,
mount the sensor about ve 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.
 1.2.3 WaterTemperatureSensors
Desert Aire dehumidiers ordered with the pool water heating option are supplied with
two water temperature sensors for each pool water condenser purchased. One of
these sensors is for the inlet temperature and the other is for the outlet temperature.
Each sensor comes with an immersion well for mounting.
• Screw the wells into adapter ttings of the inlet and outlet pool water piping.
The wells are equipped with a 1/2” MPT connection.
• Install the sensors upstream and downstream from the dehumidier of the
auxiliary pool water heater.
• The sensors must be installed in a location where they will accurately sense
the pool water inlet and outlet temperature conditions. This means you must
have continuous water ow at the sensor locations.
 1.2.4 OutdoorAirMountedHumidityandTemperatureSensor
If your dehumidier was ordered for indoor use, an outdoor air sensor will need to be
mounted outdoors. The sensor will come with a radiant shield to allow ambient
conditions una󰀨ected by direct sunlight.
1.3. AuxiliaryAirHeatingControlWiring
Note: You must use the Desert Aire CM3510 control system to control or interlock with
the room heating system. This prevents wide uctuations in room air temperature. It also
prevents the heater from trying to heat the room while the dehumidier is running in the
cooling mode.
 1.3.1. AuxiliaryHeating-DryContactClosure
The standard Desert Aire CM3510 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 terminals H1
and H2 in the control panel of the dehumidier. (See your wiring schematic for
connection details.)
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NOTE: Units with an internal electric air heater have an airow proving switch function
in the controls. If an air heater is installed external to the unit, provide an external
airow proving switch for protection of the heater.
 1.3.2. AuxiliaryHeating-ProportionalSignal
Desert Aire will provide a proportional 0-10 VDC direct-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 eld-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.
The control signal may also be set for reverse-acting or for 2-10 VDC. Contact Desert
Aire’s service department for recommendations or instructions on how these options
can be implemented.
You must follow the instructions included with the valve cut sheet. Observe the proper
polarity or you may damage both the valve and the controller. (See your wiring
schematic for connection details.)
1.4. CM3510 Controller Overview
Desert Aire’s CM3510 microprocessor controller is a powerful, exible controller with
many useful features including:
• Display of room air temperature, relative humidity and refrigerant pressures.
• Display of equipment operating status such as dehumidication and cooling.
• Display of alarms for abnormal conditions such as sensor failures or tripped
safety controls.
• An optional seven-day occupancy timer which can control outdoor air dampers
(if used) to bring in fresh air when the dehumidier is an occupied state.
• A convenient, easy-to-understand display interface which allows the operator
to view and change set points and time schedules.
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2. Controller Details
2.1. MenuOverviewandGeneralInstructions(Figure1)
Your Desert Aire controller is pre-programmed and congured at the factory for use in the
application you have specied. 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 below:
The Home Screen (Figure 1) displays the Desert Aire logo and shows the dehumidier status,
zone temperature and relative humidity and the operational state of the fan, compressor and
air heating. The unit type is displayed in the upper right of the screen indicating SP and the
tonnage. 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. The
“Prg→Stpt” indicates that if the Prg key is pressed, the setpoints can be changed. The “↑ ↓
→Help” indicates that if the UP or DOWN keys are pressed, the help screens will be shown.
The UP or DOWN keys will now scroll through the help screens.
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 “o󰀨”
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selection is altered as soon as the UP or DOWN keys are pressed.
When an alarm is triggered, the red LED behind the ALARM key will light and will remain on
until the alarm is reset.
To view the alarms from any menu, simply press the ALARM key. If no alarm is active, the
display will state NOALARMS. If an alarm is present, it will be displayed along with the date
and time it was triggered. The bottom two lines will display two data points recorded when the
alarm was triggered.
To reset the alarm, use the DOWN key until the reset instructions are shown. Pressing the
ALARM key for three seconds will reset all active alarms. See Section 3 for further alarm and
alarm data logging information.
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 display will return to
the Home Screen.
Figure 1
2.2. ZoneSetpoints(Figure2)
Pressing the Prg key from the Home Screen displays the ZONE SETPOINTS (Figure 2). This
menu allows for modications of the temperature and humidity setpoints specic 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 Home Screen,
press the Esc key.
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Figure 2
If pool heating is included in the unit, the UP and down arrows keys will be shown on the right
of the screen. Press the DOWN key and the screen shown in Figure 3 will appear. Set the
pool water temperature setpoint with the ENTER and UP and DOWN keys and press the
ENTER key to modify. Pool 2 setpoint will be shown in a similar manner when a second pool
condenser is supplied with the dehumidier.
To return to the MAIN MENU, press the Esc key.
Figure 3
2.3 MainMenu(Figure4)
Pressing the Esc key from the Home Screen displays the MAIN MENU (Figure 4). This menu
allows the operator to select the STATUS MENU, set an Occupancy Schedule, enter the
Service Menu and view the Unit Revision. To return to the Home Screen, press the Esc key.
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Figure 3
Figure 4
2.3.1UnitStatus(Figure5)
Selecting Unit Status from the MAIN MENU displays a text explanation of the unit. The
rst line will show one of the following states:
• O󰀨/Satised
• Heating Req.
• Cooling Req.
• Dehum Req.
• Dehum & Heat
• Dehum & Cool
• Energy Recovery
• Low Air Flow
• Low Suct. Press
• EXV Initializing
The Airow condition is shown on the second line. The Occupied state (either
Occupied or Un-Occupied) is shown on the third line. The Fourth line will display the
air mode either Normal, Event Mode, Max O/A or Purge Mode. The fth line displays
will display “BMS has Disabled Unit” if the BMS has turned the unit o󰀨. The date and
time will be shown on the bottom line. To return to the STATUS MENU, press the
Esc key.
Figure 5
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Pressing the DOWN key will display the screen shown in Figure 6. This screen will
show Circuit A compressor status and if it is waiting on its non-short cycling timer. The
o󰀨 state of circuit A or the condenser used is shown on the third line. The Air or Water
priority is show on the fourth line. To return to the STATUS MENU, press the Esc key.
Figure 6
Pressing the DOWN key will display the screen shown in Figure 7. This screen will
show Circuit B compressor status and if it is waiting on its non-short cycling timer. The
o󰀨 state of Circuit B or the condenser used is shown on the third line. The Air or Water
priority is show on the fourth line. To return to the STATUS MENU, press the Esc key.
Figure 7
Pressing the DOWN key will display the screen shown in Figure 8. This screen
will show the EXV of Circuit A along with the superheat, suction temperature,
suction pressure suction P2T, steps and percent open of the EXV. This screen
is for troubleshooting only. To return to the STATUS MENU, press the Esc key.
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Figure 8
Pressing the DOWN key will display the screen shown in Figure 9. This screen will show
the EXV of Circuit B along with the superheat, suction temperature, suction pressure
suction P2T, steps and percent open of the EXV. This screen is for troubleshooting only.
To return to the STATUS MENU, press the Esc key.
Figure 9
 2.3.2 OccupancySchedule(Figure10)
Select the OCCUPANCY SCHEDULE from the MAIN MENU to enable a schedule to place
the dehumidifier in the occupied mode. See Figure 10. To enable a schedule, select ‘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 10
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   2.3.2.1Time/Date(Figure11)
This screen sets the time, date and day of week and the time zone. 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 accept that value and step to the next item. To return to the
OCCUPANCY SCHEDULE, press the Esc key.
Figure 11
2.3.2.2DailyEvents(Figure12)
This is where each day’s events are set. Four settings are possible,
which will allow two separate occupancy periods. Check the rst box
by pressing the UP key when the cursor is over the check box. Set the
time in 24 hour format and then select ‘Occupied’ or ‘Un-Occupied’.
Save this data at the bottom of this screen by selecting ‘Yes’ and
pressing ENTER.
Once a day is entered, these settings can be copied to any other day
by selecting the day to copy, setting the 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 12
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2.3.2.3VacationPeriods(Figure13)
The Vacation Period will allow three sets of vacation to keep the
dehumidier ‘Occupied’ or ‘Un-Occupied’. Set the range of days that
this will occur, the Start Date and End Date for that holiday. To return
to the OCCUPANCY SCHEDULE MENU, press the Esc key.
Figure 13
2.3.2.4SpecialDays(Figure14)
Also available are 6 special days where the full day can be set for
either ‘Occupied’ or ‘Un-Occupied’.
To return to the OCCUPANCY SCHEDULE MENU, press the Esc key.
Figure 14
2.3.2.5TemporaryOccupancy(Figure15)
This screen allows the unit to be manually set to Occupied 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 “Set Override” message. Press
UP and ENTER keys to set this override to ‘On’. The dehumidier will
now be ‘Occupied’ for this period of time. When the override expires,
the screen will again display Set Override, and the dehumidier will
return to its normal state.
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To return to the OCCUPANCY SCHEDULE MENU, press the Esc key.
Figure 15
2.3.3ServiceMenu(Figures16and17)
Selecting the SERVICE MENU will display the Login Screen (Figure 16).
Enter the service password, 1234, and pressENTER.
Figure 16
The SERVICE MENU gives access to Commissioning, Tuning, I/O Status,
Sensor O󰀨sets and Memory Options. (Figure 17).
Figure 17
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