Desert Aire ExpertAire LC Series Manual de usuario

Installation and Operation Manual

• Meets AHRI Standard 910.

• Effective humidity control:

4 to 100 lbs per hour.

• Wide range of ambient

temperatures: 65° to

95° F.

• Air conditioning option.

• Optional outdoor air

intake to help meet

ASHRAE 62 ventilation

requirements.

• Multiple heat sink options

including pool water

heating.

• Scroll compressors for

high efficiency and

longevity.

• Galvanneal cabinet with

high impact, powder coat

textured paint.

• Auxiliary heat including

hot water and electric

coils.

LC System

LV System

Desert Aire - LC/LV Manual

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.

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.

4Desert Aire - LC/LV Manual

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: (262) 946-7400

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.

Desert Aire - LC/LV Manual

Safety Labels are used throughout this manual. They comply with the ANSI Z535.4 Standard.

Please be familiar with the following labels and their denitions.

This is the safety alert symbol. It is used to alert you to potential

personal injury hazards. Obey all safety messages that follow this

symbol to avoid possible death or injury.

Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in minor or moderate injury.

Caution used without the safety alert symbol indicates a

potentially hazardous situation which, if not avoided, could

result in property damage.

Desert Aire - LC/LV Manual

TABLE OF CONTENTS

1. Introduction ...................................................................................................................... 9

1.1. Inspection ............................................................................................................... 9

1.2. Freight Damage Claims ........................................................................................... 9

1.3. Rigging

....................................................................................................................

  1.3.1.RiggingtheDehumidier

............................................................................

1.3.2. Rigging the Remote Condenser ................................................................. 10

2. Installation ........................................................................................................................ 11

 2.1. LocationofDehumidier......................................................................................... 11

2.2. Duct Installation ....................................................................................................... 13

2.3. Condensate Drain Piping ........................................................................................ 16

2.4. Water Heating Applications ..................................................................................... 18

2.4.1. Water Piping Connections ......................................................................... 18

2.4.2. Low Water Flow Protection ........................................................................ 21

2.5. Remote Condenser (Optional) ................................................................................ 21

2.6. High Voltage Wiring ................................................................................................ 24

2.6.1. High Voltage Connections

.....................................

...........

.........................

2.6.2. Wire and Fuse Sizing ...............................................

..............................

.... 25

2.7. Controls and Sensors ............................................................................................. 25

2.7.1. Wall Mount Sensor .....................................................

...........

..................... 25

2.7.2. Duct Mount Sensor .................................................................................... 25

2.8. Auxiliary Heating Control Wiring ............................................................................. 25

2.8.1. Auxiliary Heating - Dry Contact Closure .................................................... 25

2.8.2. Auxiliary Heating - Proportional Signal .............................

................

......... 26

2.9. Smoke Alarm Interlock ............................................................................................ 26

3. Start-up Procedure ........................................................................................................ 27

3.1. Preliminary Inspection ..........................................................................

...............

... 27

3.2. Outdoor Air Applications ...................................................................

.................

..... 28

3.2.1. Outdoor Air Option Equipped Units ..................................

...................

....... 28

3.2.2. Standard Systems in Conjunction with Outdoor Air ................................... 30

3.2.3. Outdoor Air Supplemental Information ....................................................... 31

3.2.3.1 LC and LV Operation Modes .................................

.............

.......... 31

3.2.4. Determining if Outdoor Air Pre-Heating is Required .................................. 31

3.2.5. Approximating Outdoor Air Volume ............................................................ 32

 3.3. AirowBalancing..................................................

.................

................................. 33

3.3.1. Blower Adjustment Procedure ..................................................

............

...... 33

  3.3.2. AirowBalancingforLCDehumidiers...........................

.............

............. 34

  3.3.3. AirowBalancingforLVDehumidiers...................................................... 36

3.4. Refrigeration Testing ............................................................................................... 38

3.5. General Testing ........................................................................

......................

........ 40

Desert Aire - LC/LV Manual

8Desert Aire - LC/LV Manual

3.6. Routine Maintenance Schedule ............................................................................. 40

3.6.1. Service Every Month ................................................................................. 40

3.6.2. Service Every Six Months ......................................................................... 41

3.6.3. Pool Water Chemistry ............................................................................... 41

4. Troubleshooting ............................................................................................................. 43

4.1. The Blower Does Not Run ..................................................................................... 43

4.2. The Compressor Does Not Run ......................................................

.................

...... 43

4.3. Evaporator Coil Ices Up ......................................................................................... 44

4.4. Head Pressure is Too High ..........................................................

...................

........ 45

4.5. Unit Runs but Excess Condensation on Walls and Windows ........

....................

.... 46

4.6. Pool Water Heating Problems (Water-Cooled Units Only) ...................................... 46

5. Appendix .......................................................................................................................... 47

5.1. Compressor Failure ............................................................................................... 47

5.1.1. Compressor Replacement .............................................

.....................

...... 47

5.2. Recommended Duct Design .......................................................

..................

........ 51

5.3. System Guidelines ...........................................................................

............

......... 52

5.3.1. Recommended Controller Settings ..............................

..............

.............. 52

5.3.2. Refrigeration System Pressures ........................

..................

..................... 52

5.3.3. Temperature Rise or Drop Across Unit ..................................................... 52

5.4. Sequence of Operation ...........................................................

...................

........... 53

  5.4.1. DehumidicationandAirReheat.............................................................. 53

  5.4.2. DehumidicationandAirCooling.........................

.......................

............. 53

5.4.3. Cooling and Water Heating (Water-Cooled Unit Only) ............................. 53

  5.4.4. DehumidicationandWaterHeating(Water-CooledUnitOnly)...

.......

...... 53

5.4.5. Partial Pool or Spa Water Heating ..................................

............

.............. 54

5.4.6. Operation of Water Condensers and Optional Pump Starts ....

...............

... 54

5.4.7. Blower Operation ............................................................

...................

........ 54

5.4.8. Air Heat (Optional) ..............................................................

............

.......... 54

5.4.9. Outdoor Air (Outdoor Air Equipped Models Only) ..................

..............

..... 55

5.5. Component Replacement, Charge, Evacuation, & Leak Instructions ..

........

.......... 55

5.6. Rating Plate ........................................................................................................... 60

5.7 Start-up Supervision Supplemental Information (Optional) ................................... 60

5.8. System Start-up Report ......................................................................................... 61

LC/LV Factory Start-up Supervision ....................................................................... 62

LC/LV Start-up Report ............................................................................................ 64

LC/LV Series Compressor Replacement Form ...................................................... 68

Desert Aire - LC/LV Manual

1. Introduction

 DesertAiredehumidiersaredesignedtoprovideyearsofreliableservicewheninstalled

 properly.Readtheseinstructionscarefullybeforeyouinstallthedehumidier.

1.1 Inspection

  DesertAireinspectsandtestseachdehumidierbeforeitleavesthefactorysothat

you receive a quality piece of equipment. Unfortunately, equipment may become

  damagedintransit.Inspectthedehumidiercarefullybeforesigningthereceiving

papers. Check for both visible and concealed damage. Remove crating and inspect

  theexteriorcabinetfordamage.Dentedpanels,brokencratingoranyuidsleaking

from the unit should be documented upon delivery.

1.2 Freight Damage Claims

  Ifthedehumidierhasbeendamaged,documenttheextentofthedamage.Take

  pictures.Next,obtainaclaimformfromthecarrier.Promptlylloutandreturnthe

  form.Carriersmaydenyclaimsthatyouhavenotlledoutwithinaweekofdelivery.

Notify Desert Aire of any damage.

1.3 Rigging

1. Failure to observe rigging instructions may lead to equipment damage, personal

injury, or death.

2. Lifting method and procedure must comply with all local and national codes and

regulations.

3. The use of safety slings in addition to lifting lugs is required.

4. Do not lift the dehumidifier in high winds or above people.

  DesertAiredehumidiersaresolidlybuiltandcanbeveryheavy.Avoidpersonal

injury and damaging the equipment by planning the installation carefully. Use moving

equipment whenever possible.

1.3.1 Rigging the Dehumidier

Depending upon the unit type, various rigging methods are used to best lift the

equipment. Personnel should avoid stepping on the top of the unit. Desert

   Airedehumidiersarenotdesignedtosupporttheweightofapersononall

portions of the roof. Damage incurred through caved or distorted top panels

will not be covered under warranty.

1.3.2 Rigging the Remote Condenser

The optional remote condensers are equipped with four or more lifting eyes.

Test-lift the remote condenser to verify that it is properly balanced.

Figure 1 - Typical Rigging for an Optional Remote Condenser

1. Do not lift the remote condenser by its refrigeration headers or return bends.

1. Do not tip the dehumidifier on its side.

2. Avoid dropping the unit down stairways or subjecting it to severe mechanical shock.

Desert Aire - LC/LV Manual

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