Airxcel Marvair ComPac II Series User manual

A
R
I
S
T
A
N
D
A
R
D
2
1
0
EQ
U
I
P
M
E
N
T
U
N
I
T
A
R
Y
A
I
R
C
O
N
D
I
T
I
O
N
I
N
G
M
A
N
U
F
A
C
T
U
R
E
R
C
E
R
T
I
F
I
E
D
T
O
A
R
I
A
S
C
O
M
P
L
Y
I
N
G
W
I
T
H
R
A
R
I
S
T
A
N
D
A
R
D
S
Description .........................................5
Installation........................................22
Start-Up.............................................39
Troubleshooting..............................41
Parts List ..........................................44
Maintenance ....................................47
Warranty ...........................................48
ComPac®I and ComPac®II
Air Conditioner Product Manual
VerticalWall-MountAirConditioners
with Front Control Box Panel
Models AVP20-24-30-36-42-48-60-72
P/81024 9/04-12
supersedes 11/03-11
Manufactured By:
Marvair®Division of AIRXCEL®, Inc.
P.O. Box 400 • Cordele, Georgia 31010
156 Seedling Drive • Cordele, Georgia 31015
[phone] • Fax [phone]
E-mail:[email protected] •Internet:www.marvair.com

2ComPac 9/04-12
How To Use
This Manual
This manual is intended to be a guide to Marvair's ComPac®line of vertical air conditioners. It
contains installation, troubleshooting, maintenance, warranty, and application information. The
informationcontainedinthismanualistobeusedbytheinstallerasaguideonly. Thismanual does
not supersede or circumvent any applicable national or local codes.
If you are installing the ComPac®unit, first read Chapter 1 and scan the entire manual before
beginning the installation as described in Chapter 2. Chapter 1 contains general, descriptive
information and provides an overview which can speed up the installation process and simplify
troubleshooting.
If a malfunction occurs, follow this troubleshooting sequence:
1. Make sure you understand how the ComPac®unit works (Chapters 1 & 3).
2. Identify and correct installation errors (Chapter 2).
3. Refer to the troubleshooting information in Chapter 4.
If you are still unable to correct the problem, contact the Factory at 1-800-841-7854 for additional
assistance.
Please read the following “Important Safety Precautions” before beginning any work.
1. USE CARE when LIFTING or TRANSPORTING equipment.
2. TRANSPORT the UNIT UPRIGHT. Laying it down on its side may cause oil to leave the
compressor and breakage or damage to other components.
3. TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or
working on the equipment. LINE VOLTAGES ARE HAZARDOUS or LETHAL.
4. OBSERVE and COMPLY with ALL applicable PLUMBING, ELECTRICAL, and BUILD-
ING CODES & ordinances.
5. SERVICE may be performed ONLY by QUALIFIED and EXPERIENCED PERSONS.
* Wear safety goggles when servicing the refrigeration circuit
* Beware of hot surfaces on refrigerant circuit components
* Beware of sharp edges on sheet metal components
* Use care when recovering or adding refrigerant
6. Use COMMON SENSE - BE SAFETY-CONSCIOUS
© 9/04 Marvair®Div. Airxcel®, Inc.
Important
Safety
Precautions
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

3ComPac 9/04-12
ComPac®A/CDescription&Specifications
1.1 GeneralDescription ........................................................................................ 5
1.2 ModelIdentification ........................................................................................ 5
1.3 SerialNumberDateCode............................................................................... 5
1.4 RatingsandSpecifications ............................................................................... 6
1.5 GeneralOperation .......................................................................................... 9
1.6a ElectronicControlBoardModeofOperation ................................................ 10
1.6b MechnicalControls ....................................................................................... 12
1.7 OptionalControls ......................................................................................... 12
1.8 ElectricalDiagrams ....................................................................................... 14
1.9 EconomizerComponents .............................................................................. 21
Installation
2.1 EquipmentInspection .................................................................................... 23
2.2 InstallationRequirements ............................................................................... 23
2.3 InstallationMaterials ..................................................................................... 24
2.4 PortingandDuctWork ................................................................................. 26
2.5 FreshAirHoodInstallation ........................................................................... 27
2.6 BracketInstallation ....................................................................................... 27
2.7 MountingtheUnit ......................................................................................... 27
2.8 ElectricalConnections ................................................................................... 28
Start-Up
3.1 Check-OutofCoolingCycle......................................................................... 33
3.2 Check-OutofHeatingCycle ......................................................................... 33
3.3 A/CTestingwithLL357D2........................................................................... 34
Troubleshooting
4.1 Overview...................................................................................................... 35
4.2 FailureSymptomsGuide ............................................................................... 36
4.3 CompressorTroubleshooting ........................................................................ 37
4.4 ControlBoardDiagnosis ............................................................................... 38
PartsList
5.1 PartsList ...................................................................................................... 39
5.2 Illustrations ................................................................................................... 40
Maintenance
6.1 ScheduledMaintenance ................................................................................ 42
Warranty
7.1 LimitedProductWarranty ............................................................................. 43
7.2 OptionalSilverServiceProgram.................................................................... 44
TABLE OF
CONTENTS

4ComPac 9/04-12
ILLUSTRATIONS Figure 1a. ComPac®I& II A/C Dimensions-Models 20-36 ....................... 7
1b. ComPac®I&IIA/CDimensions -Models 42-60 ........................ 7
1c. ComPac®I&IIA/CDimensions-Model72 ............................... 8
Figure 2. RefrigerantCircuit ......................................................................... 9
Figure 3a. TypicalElectricalSchematic-ComPac®IA/CModels20-60
withMechanicalRelaysandContactors....................................... 15
3b. TypicalElectricalSchematic-ComPac®IA/CModels20-60
withElectronicControlBoard ..................................................... 16
3c. TypicalElectricalSchematic-ComPac®IIA/CModels20-60
withMechanicalRelaysandContactors....................................... 17
3d. TypicalElectricalSchematic-ComPac®IIA/CModels20-60
withElectronicControlBoard ..................................................... 18
3e. TypicalElectricalSchematic-ComPac®IA/CModel72 .............. 19
3f. TypicalElectricalSchematic-ComPac®IIA/CModel72............. 20
Figure 4. H205ATemperatureControlPoints ............................................ 21
Figure 5. H205AControlPointAdjustment ............................................... 22
Figure 6. FreshAirHoodInstallation ......................................................... 27
Figure 7. WallMountingDetail-ComPac®A/CAVP20-72 ...................... 28
Figure 8a. ThermostatWiringDetails ........................................................... 31
Figure 8b. CommStat3™WiringDetail ...................................................... 31
Figure 8c. LL357D2WiringDetail .............................................................. 32
Table 1 CFM@ExternalStaticPressure .................................................. 6
Table 2 ShipWeight .................................................................................. 6
Table 3 StandardFilterSize....................................................................... 6
Table 4 MinimumClearances................................................................... 24
Table 5 VoltageLimitations ..................................................................... 24
Table 6 MaximumStaticPressure ............................................................ 26
TABLES

5ComPac 9/04-12
Marvair'sComPac®linesareaseriesofverticalwall-mountedairconditioningsystemsthat
provideheating,cooling,andventilationforelectronicequipmentshelters,processcontrol
centers, andotherapplicationswithhighinternalheatgains. Theseriesincludesmultiple
sizesandnominalcoolingcapacitiesfrom18,000to72,000BTUH. Resistanceheating
elementsareavailableinvariouswattages.
Marvair’sComPac®I&ComPac®IIairconditioners,modelsAVP20-60,featurean
exclusiveelectroniccontrolboard.Thecontrolboardconsolidatesseveraloftheelectrical
componentsandimprovestheairconditioner’sreliability.Thecontrolboardreplacesthe
blowerrelay,thelockoutrelay,thecompressortimedelayandthetimedlowpressure
bypass.Inaddition,thecontrolboardhasLED’stoindicateoperatingstatusandfault
conditionstoassisttheservicetechnician.Acompletedescriptionoffunctionsofthe
controlboardisinSection1.6. TheAVP72doesnotcurrentlyhavethecontrolboard.
TheComPac®I&ComPac®IImodelsaredesignedforeasyinstallationandservice. Major
componentsareaccessibleforservicebeneathexternalpanels.
Allunitshaveinternaldisconnects(optionalon460V). Dependinguponstateandlocalcode
requirements,thisfeaturemayeliminatetheneedforanexternalbreakerordisconnect.
TheComPac®IA/Chasa0-15%manualoutsideairdamperandtheComPac®IIA/Chas
afactoryinstalledeconomizerfor100%freecoolingwithoutsideair.
DESCRIPTION &
SPECIFICATIONS
1.1 GENERAL
DESCRIPTION
1.2 MODEL
IDENTIFICATION
Themodelidentificationnumberisfoundonthedatasticker. Ratingplatelocatedonside
panel.
1.3 SERIAL NUMBER
DATE CODE
AVP ** AC * * * *
AirSource VerticalPackage
*Ratings at 60 Hz.
Power Supply
A = 208/230V, 1ø, 60 Hz F = 220V, 1ø, 50 Hz L = 208/2300V, 1ø, 60 Hz
C = 208/230V, 3ø, 60 Hz G = 220V, 3ø, 50 Hz & 200V, 1ø, 50 Hz
D = 460V, 3ø, 60 Hz H = 380V, 3ø, 60 Hz M = 200V, 1ø, 50 Hz
E = 380V, 3ø, 50 Hz J = 460V, 3ø, 50 Hz
Electric Heat (kW)
00, 04, 05, 06, 08, 09, 10, 15
Configuration
N=ComPac®IA/C
C=ComPac®IIA/C
System Type = Air Conditioner
NominalCooling*
20= 18,000 BTUH 42= 41,500BTUH
24= 24,000 BTUH 48= 48,000BTUH
30= 29,400 BTUH 60= 57,000BTUH
36= 35,600 BTUH 72= 72,000BTUH
A = January E=May J = September L = 2000 R = 2004 V = 2008
B = February F = June K = October M = 2001 S = 2005 W = 2009
C = March G = July L = November N = 2002 T = 2006
D = April H = August M = December P = 2003 U = 2007
Special Option Code
R = Electric Reheat
U = Scroll Compressor