Desert Aire CM3540 Series Manuale utente
Installation and Operation Manual
for LW units
A
dvanced program
capabilities.
Internal Display
Te
rminal (IDT)
Multiple communication
interface options:
- LonW
orks®
- BACnet™ Ethernet
- BACnet™ MS/TP
- Modbus
®
Precise temperature
and humidity control.
CM3540 Series
Controller
2
3
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 Dehumidication 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
decienciesareidentiedaWarrantyValidationLetterwillbeissuedthatprovidesallwarranty
datesandcoverage.Ifinstallationorstart-updecienciesarepresent,thesemustbecorrected
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.
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.
Desert Aire - CM3540 Manual
4
ExtendedWarranty:
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
identied 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 specic 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
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.
Desert Aire - CM3540 Manual
5
ProductWarningfortheStateofCalifornia
Desert Aire - CM3540 Manual
6Desert Aire - CM3540 Manual
7
TABLEOFCONTENTS
1. Installation ........................................................................................................................ 9
1.1 Humidity and Temperature Control Package
..........................................................
9
1.2 Sensor Installation .................................................................................................. 9
1.2.1 Duct-Mount Temperature and Relative Humidity Sensor
.............................
9
1.2.2 Zone-Mount Temperature and Relative Humidity Sensor
............................
9
2. LW Controller Details ..........................................................
.............................................
11
2.1 Menu Overview and General Instructions
...............................................................
11
2.2 Main Menu
..............................................................................................................
1 2
2.2.1 Status Menu ................................................................................................. 13
2.2.1.1 Unit Status ..................................................................................... 13
2.2.1.2 I/O Status ....................................................................................... 14
2.2.1.2.1 Digital Inputs .................................................................. 15
2.2.1.2.2 Analog Inputs ................................................................. 15
2.2.1.2.3 Digital Outputs ............................................................... 16
2.2.1.2.4 Analog Outputs .............................................................. 17
2.2.1.3 Pressure Cut-outs
..........................................................................
17
2.2.2 Unit Setpoints ................................................................................................ 18
2.2.3 Occupancy Menu .......................................................................................... 18
2.2.3.1 Schedule Options ........................................................................... 19
2.2.3.1.1 Current Schedule .......................................................... 19
2.2.3.2 Temporary Holidays ....................................................................... 20
2.2.3.3 Annual Holidays ............................................................................. 20
2.2.3.4 Temporary Occupancy ................................................................... 21
2.2.3.5 Set Time ......................................................................................... 22
2.2.4 Service Menu ................................................................................................ 22
2.2.4.1 Deadbands ..................................................................................... 23
2.2.4.2 Differentials .................................................................................... 24
2.2.4.3 Sensor Offsets ............................................................................... 25
2.2.4.4 Air Heat Settings ............................................................................ 25
2.2.4.5 Condenser Settings ....................................................................... 26
2.2.5 Unit Revision ................................................................................................. 27
3. Alarms
..................................................................................................................................
29
3.1. Alarm Menu ............................................................................................................. 29
3.1.1. Alarm Screen ............................................................................................ 29
3.1.2. Low Suction Pressure ............................................................................... 29
3.1.3. High Discharge Pressure .......................................................................... 30
3.1.4. Compressor Overload ............................................................................... 30
Desert Aire - CM3540 Manual
8
3.1.5. Blower Overload ....................................................................................... 30
3.1.6. Alarm History Screen ................................................................................ 30
4. Hardware Details .............................................................................................................. 33
4.1. Programmable Controller
........................................................................................
33
4.2. Suction Pressure Transducer
.................................................................................
33
4.3. Discharge Pressure Transducer ............................................................................ 33
4.4. Defrost and Ambient Temperature Sensor ............................................................. 34
4.5. Zone Air Temperature / Relative Humidity Sensor ................................................. 34
5. Appendix ............................................................................................................................ 35
Desert Aire - CM3540 Manual
9
1. Installation
1.1. Humidity and Temperature Control Package
Your Desert Aire CM3540 controller is designed for precise monitoring and control of air
temperature and relative humidity (RH) within a conditioned environment.
This CM3540 control system is easy to install and operate. It features a display mounted
on the controller face which allows you to view and adjust set points and modes of
operation. It also indicates the operating status of major components inside of the
dehumidier.
Most sensors and inputs have been factory-installed and wired inside of the
dehumidier. An additional sensor, included in the control assembly, needs to be mounted
in the return air duct or the zone to be conditioned. This device senses the conditioned
zone air temperature and relative humidity to control the LW dehumidier. For BMS Points
Lists please send inquiry to [email protected] and include your model number, serial
number and BMS protocol.
1.2. Sensor Installation
1.2.1. Duct-Mount Temperature and Relative Humidity Sensor
The duct-mount return air temperature and relative humidity sensor is used to
select the operational modes of the dehumidier and provide consistent conditions
throughout the space.
Install the duct-mount sensor in the return air duct of the dehumidier. CAUTION:
Do not mount the sensor in a section of duct where false readings may occur due
to stratication, solar heat gain, thermal losses in winter or where water is likely to
drip on it.
Note: If the sensor is installed outdoors, it must be mounted within a weatherproof
enclosure.
Install using 24-16 AWG stranded wire; 18 AWG stranded wire recommended.
Do not run sensor wiring adjacent to, OR in the same conduit as, wires carrying
more than 24 VAC. See manufacturer’s specications for more details.
1.2.2. Zone-Mount Temperature and Relative Humidity Sensor
In cases where a return duct is not used, a zone temperature and relative humidity
sensor is used to select the operational modes of the dehumidier and provide
consistent conditions in the zone.
Desert Aire - CM3540 Manual
10
Install the zone-mount sensor in an area representative of the zone conditions,
shielded from any abnormal external heat or humidity sources. CAUTION: Do not
mount the sensor in any area where false readings may occur due to
stratication, solar heat gain, thermal losses or inuenced by supply air diffusers.
Install using 24-16 AWG stranded wire; 18 AWG stranded wire is recommended.
Do not run sensor wiring adjacent to, OR in the same conduit as, wires carrying
more than 24 VAC. See manufacturer’s specications for more details.
Desert Aire - CM3540 Manual
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