Desert Aire CM3510 Series User manual

Installation and Operation Manual for SA Units
• Backlit LCD User
Interface
• Pr
ogrammed by
Desert Ai
re for
dehumidification and
temperatur
e control
• Multiple communicatio
n
interface options:
- LonW
orks®
- BACnet™ Ether
net
- BACnet™ MS/T
P
- Modbus
®
• Alarm history r
etention
• Inter
nal time clock for
stand alone operatio
n

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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
Overview .............................................................................................................................. 9
1. Field Installation of CM3510 Control Sensors ............................................................. 9
1.1.1 Duct-Mounted Sensor ............................................. ................................... 9
1.1.2 Wall Mount Humidity and Temperature Sensor .................. ...................... 9
1.1.3 Water Temperature Sensor (Pool Water Heating Option Only) ................ 9
1.2 Auxiliary Air Heating Control Wiring ........................ ............................................... 10
1.2.1 Auxiliary Heating - Dry Contact Closure ............... ..................................... 10
1.2.2 Auxiliary Heating - Proportional Signal .................. .................................... 10
1.3 CM3510 Controller Overview ................................. ................................................ 10
2. SA Controller Details ................................................. ....................................................... 13
2.1 Menu Overview and General Instructions ............................................................... 13
2.2 Main Menu .............................................................................. ................................ 14
2.2.1. Status Menu ................................................................................................. 14
2.2.1.1 Unit Status ................................................... .................................. 15
2.2.1.2 I / O Status ........................................................ ............................ 17
2.2.1.2.1 Digital Inputs (Binary) ..................................................... 18
2.2.1.2.2 Analog Inputs ................................. ................................ 22
2.2.1.2.3 Digital Outputs (Binary) .................................................. 25
2.2.1.2.4 Analog Outputs ............................................ .................. 28
2.2.1.3 Pressure Cutouts ................................................... ....................... 30
2.2.1.4 EXV Status .................................................................................... 30
2.2.2 Setpoint Menu ............................................................................................. 31
2.2.3 Occupancy Schedule .................................................................................. 32
2.2.3.1 Schedule Options .......................................................................... 33
2.2.3.2 Temporary Holidays .............................................. ........................ 34
2.2.3.3 Annual Holidays ............................................................................ 35
2.2.3.4 Temporary Occupancy .................................................................. 36
2.2.3.4.1 Temporary Overrides ...................................................... 36
2.2.3.5 Set Time ........................................................................................ 37
2.2.4 Service Menu ............................................................................................. 38
2.2.4.1 Tmp/RH Settings ............................................................................ 38
2.2.4.1.1 Deadbands ..................................................................... 39
2.2.4.1.2 Air Differentials ............................................................... 41
2.2.4.1.3 Energy Recovery .......................................... ................... 42
2.2.4.1.4 Pool 1 or 2 Settings ........................................................ 43
2.2.4.2 Aux Heat Settings ................................................... ........................ 44
2.2.4.3 Cond/Roof Settings ....................................................................... 47
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2.2.4.4 Sensor Offsets .............................................................................. 49
2.2.4.5 Airow Menu ................................................................................. 50
2.2.4.5.1 Airow Setup .................................................................. 51
2.2.4.5.2 Airow PID Loops .......................................................... 56
2.2.4.5.3 Max O/A Settings ........................................................... 60
2.2.4.5.4 Low Exhaust Settings .................................................... 60
2.2.4.6 Economizer Settings ..................................................................... 61
2.2.5 Unit Revision .............................................................................................. 63
2.3 Alarms ..................................................................................................................... 63
2.3.1 Alarm Screen ............................................................................................. 63
2.3.2 Low Suction Pressure Circuit A or Circuit B ............................................... 64
2.3.3 High Discharge Pressure Circuit A or Circuit B .......................................... 64
2.3.4 Supply Air Temperature Sensor Failure ..................................................... 65
2.3.5 Zone Air Temperature Sensor Failure ........................................................ 65
2.3.6 Supply Blower or Exhaust Blower Motor Overload .................................... 65
2.3.7 Compressor A or B Motor Overload ............................................................ 65
2.3.8 System Shutdown ...................................................................................... 65
2.3.9 Low Supply Air Temperature ...................................................................... 66
2.3.10 Low Voltage (optional Low Voltage Monitor needed to activate alarm) ..... 66
2.3.11 Low Air Flow ............................................................................................... 66
2.3.12 Freeze Stat Alarm (Units Equipped with Hot Water Coil Option Only) ....... 66
2.3.13 Evacuator VFD Overload ........................................................................... 66
2.3.14 Alarm History Screen ................................................................................. 66
3 Hardware Details .............................................................................................................. 69
3.1 Programmable Controller ........................................................................... ............. 69
3.2 Suction Pressure Transducer ................................................................................. 69
3.3 Discharge Pressure Transducer ............................................................................ 69
3.4 Differential Air Pressure Transducer ....................................................................... 70
3.5 Temperature Sensor .............................................................................................. 70
3.6 Zone Air Temperature and Relative Humidity Sensor ............................................. 70
4 Appendix ............................................................................................................................ 71
4.1 Remote Communication ....................................................................... ................... 71
4.1.1 BACnet Ethernet ........................................................................................ 71
4.1.2 BACnet MS/TP ........................................................................................... 75
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Overview
The CM3510 operating controller installed in Desert Aire’s SA dehumidifer is designed for
precise control and monitoring of air temperature and relative humidity (RH) within the
conditioned space. Additionally the control will capture and retain alarm history to aid in
equipment troubleshooting.
1. FieldInstallationofCM3510ControlSensors
The unit supplied for your project will include either a Duct Mount Sensor Assembly or a Wall
Mount Sensor Assembly depending on how the unit was ordered. All sensor installations
should be made in a location that will provide an accurate measurement of the area being
controlled. Effort should be made to prevent inuence on the sensors from external sources.
1.1.1 Duct-Mounted Sensor
Install the duct-mount sensor in the return air duct upstream of any outdoor air intakes.
• Do not mount the sensor in a section of duct where false readings may occur
due to dead air regions, solar heat gain, or thermal losses in winter.
• Do not mount the sensor where water is likely to drip on it. Liquid moisture
will ruin the humidity sensing element in the sensor.
 1.1.2 WallMountHumidityandTemperatureSensor
If your dehumidier was ordered with a wall-mount humidity and temperature sensor,
mount the sensor ve feet or higher above the pool deck on an interior wall with
natural air circulation. Avoid the following locations:
• Do not install in a corrosive or wet environment.
• 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.
1.1.3 WaterTemperatureSensor(PoolWaterHeatingOptiononly)
Desert Aire dehumidiers ordered with the pool water heating option are supplied with
a water temperature sensor and an immersion well.
• Screw the well into an adapter tted into the pool water piping. The well is
equipped with a 1/2” MPT connection.
• Install the sensor upstream from the dehumidier or the auxiliary pool
water heater.
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• The sensor must be installed in a location where it will accurately sense the
pool water temperature. Water ow at the sensor location is required for
proper operation.
1.2. 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.
 1.2.1. 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 terminal strip
on the control panel of the dehumidier. (See your wiring schematic for connection
details.)
 1.2.2. 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.
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.)
1.3. 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.
• Alarm notication and alarm history retention.
• Internal 7 day time clock for occupancy, holiday, and temporary occupancy
scheduling.
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• A convenient, easy-to-understand display interface which allows the operator to view
and change set points and time schedules.
• Optional communication modules for interface to building automation system.
Lonworks®, BACnet™ Ethernet, BACnet™ MS/TP, and Modbus®
communication modules are available.
• For BMS Points Lists please send inquiry to [email protected] and include
your model number, serial number and BMS protocol.
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2. SA Controller Details
Figure 1
2.1. Menu Overview and General Instructions
Your Desert Aire CM3510 Controller is factory programmed and congured for use in the
application you have specied. The Remote Display Terminal (RDT - Figure 1) allows the
operator to monitor and adjust the set points of your Desert Aire SA dehumidier. The RDT
has an LCD screen and 6 keys. The keys on the left hand side of the LCD screen 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 LCD screen are the UP key shown
as an up arrow, an ENTER key shown as a left arrow and a DOWN key shown as a down
arrow.
The Home Screen, displaying the Desert Aire logo, shows the Occupancy status, the air
temperature and the current relative humidity in the zone. The SA18 displayed in the upper
right of the screen indicates that the size of the unit is 18 tons. 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 EXV Init Required under the
Esc Menu indicates that the EXV driver is initializing. The valves will be initiated after each
power cycle. The compressors are disabled when this message is shown. The message
will disappear and the compressors will be enabled after the driver has initialized.
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 set points 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.
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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 remain 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.
2.2. Main Menu
Pressing the Esc key from the Home Screen displays the MAIN MENU (Figure 2). This menu
allows the STATUS MENU, Unit Setpoints, Occupancy schedule, Service Menu and view the
Unit Revision.
Figure 2
To return to the Home Screen, press the Esc key.
2.2.1 Status Menu
Selecting the STATUS MENU from the MAIN MENU allows access to the UNIT
STATUS, I/O Status, Pressure Cutouts & EXV Status.
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Figure 3
To return to the MAIN MENU, press the Esc key.
2.2.1.1 Unit Status
Selecting Unit Status from the STATUS MENU displays a text explanation of
the unit. The Unit Status will show one of the following states on the second
line.
• Zone Satised/Off
• Heating Required
• Cooling Required
• Dehumidifying
• Dehumid / Heat
• Dehumid / Cool
• Low Air Flow
• EXV Initializing
The state of the air ow switch is shown on the third line of this display. The
Occupied state (either Occupied or Un-Occupied) is shown on the fourth line.
The fth line will display the unit air ow mode. The unit air ow mode will be
Normal, EventMode, Max O/A or Purge Mode. If a VOC sensor has been
included with the unit and the sensor reports an increased VOC level then
indication of “VOC High” will appear on the right side of the fth line. The sixth
line will display if the BMS option has been turned on in the Factory
Conguration of the unit. Pressing the DOWN key from this menu displays
the status of Circuit A.
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Figure 4
To return to the STATUS MENU, press the Esc key.
Figure 5 displays the current status of circuit A only. The second line displays
if the circuit is off or, if on, the current condenser being used by the circuit.
The third 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 fourth line will display
if the remote condenser is available. The sixth line will display the water ow
switch status, but only if tower water has been selected. The bottom line
displays the current zone air conditions. Pressing the UP key displays the Unit
Status screen. Pressing the DOWNkey displays the Circuit B Status screen.
Figure 5
To return to the STATUS MENU, press the Esc key.
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Figure 6 displays the current status of circuit B only. The second line displays if the
circuit is off or, if on, the current condenser being used by the circuit. The third line
displays if the compressor is on or off, and if the compressor is waiting for non-short
cycling timer to time out. The fourth line will display if the remote condenser is available.
The fth line will display the air or water priority, but only if pool heating is available. The
sixth line will display the water ow switch status, but only if tower water has been
selected. The bottom line displays the current zone air conditions. Pressing the UP key
displays the Circuit A Status screen. Pressing the DOWN key displays the Unit Status
screen.
Figure 6
To return to the STATUS MENU, press the Esc key.
2.2.1.2 I/O Status
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. Please note that this section
describes all of the analog and digital inputs and outputs that could possibly be
provided on the dehumidifier. Your unit will almost certainly vary. Refer to the unit
specific schematic diagrams for the actual devices that have been provided.
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Figure 7
To return to the STATUS MENU, press the Esc key.
   2.2.1.2.1DigitalInputs(Binary)
The Digital Inputs screen shows the state of the contacts wired into
port J5, J7, & J8 of the controller, as well as port J4 of the optional
expansion boards. These screens are provided for troubleshooting
the control system. Figure 8 shows the rst screen in the series of the
Digital Inputs screens.
Figure 8
Water Coil T’Stat – This is only used for freeze protection of a water
or steam coil. “On” if the temperature is acceptable, and “Off” if the
temperature is low.
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Roof/Wall Open – This input can affect the supply and exhaust fan, air
heating and ventilation as set in the Service Menu. When the input is
“On”, the actions dened in Section 2.2.4.3 will be enabled. When the
input is “Off” the unit will run normally.
Cir A Aux – “On” if circuit A lead compressor starter auxiliary contact is
closed, and “Off” if this contact is open.
Cir B Aux – “On” if circuit B lead compressor starter auxiliary contact is
closed, and “Off” if this contact is open.
The second page of the digital input screen series is shown in
Figure 9 and is accessible by pressing the DOWN key.
Figure 9
Occupied Input – The Digital Occupied Contact will show “On” if the
contact is closed, and “Off” if the contact is open.
Event Input – The Digital Event Contact will show “On” if the contact is
closed, and “Off” if the contact is open.
Purge Input – The Digital Purge Contact will show “On” if the contact
is closed, and “Off” if the contact is open.
Exhst Blower OL – The exhaust blower overload contact will show
“On” if the contact is closed which is normal, and “Off” if the contact is
open to indicate a fault.
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Circuit A OL – The A circuit overload will show “On” if the contact is
closed which is normal, and “Off” if the contact is open to indicate a
fault.
The third page of the digital input screen series is shown in Figure 10
and is accessible by pressing theDOWN key.
Figure 10
Circuit B OL – The B circuit overload contact will show “On” if the
contact is closed which is normal, and “Off” if the contact is open to
indicate a fault.
Supply Blower OL – The supply blower overload contact will show
“On” if the contact is closed which is normal, and “Off” if the contact is
open to indicate a fault.
System Shutdown – The system shutdown contact, used for the smoke
alarm or general building faults, will show “On” if the contact is closed
which is normal, and “Off” if the contact is open to indicate a fault.
Voltage Monitor – The optional voltage monitor contact will show “On”
if the contact is closed which is normal, and “Off” if the contact is open
to indicate a fault.
The fourth page of the digital input screen is shown in Figure 11 and is
accessible by pressing the DOWN key. This is an optional screen and
will only be shown when the unit is congurable for pool or tower
water condenser.
Desert Aire - CM3510 Manual