background image

 

2

M

od

Pac II, 9/09-15

Specifications subject to change without notice.

© 9/09 Marvair

®

How To Use This Manual 

This manual is intended to be a guide to Marvair's M

od

Pac

 line of vertical air conditioners.  It contains 

installation, troubleshooting, maintenance, warranty, and application information.  The information 

contained in this manual is to be used by the installer as a guide only.  This manual  does not supersede 

or circumvent any applicable national or local codes.
If you are installing the M

od

Pac

 unit,  first read Chapter 1 and scan the entire manual before begin

-

ning 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 M

od

Pac

 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 1-800-726-2734 for additional 

assistance.

Please read the following “Important Safety Precautions” before beginning any work.

Important Safety Precautions

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 compres

-

sor 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 BUILDING 

CODES and 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

This  is  the  safety  alert  symbol    . When you see this symbol on the M

od

Pac unit and in the 

instruction manuals be alert to the potential for personal injury. Understand the signal word 

dANGER, WARNING and CAUTIoN. These words are used to identify levels of the serious-

ness of the hazard.

Failure to comply will result in death or severe personal injury and/or  

property damage.

Failure to comply could result in death or severe personal injury and/or  

property damage.

Failure to comply could result in minor personal injury and/or property  

damage.

IMPoRTANT 

is used to point out helpful suggestions that will result in improved installation, 

reliability or operation.

!

DANGER

!

WARNING

!

CAUTION

Summary of Contents for AVP 24

Page 1: ...6 Maintenance 27 7 Warranty 28 Exploded Views Parts Lists 29 P N 81021 9 09 15 supersedes manual dated 2 08 14 Supporting Member of Manufactured By Marvair Division of AIRXCEL Inc P O Box 400 Cordele...

Page 2: ...CARE when LIFTING or TRANSPORTING equipment 2 TRANSPORT the UNIT UPRIGHT Laying it down on its side may cause oil to leave the compres sor and breakage or damage to other components 3 TURN ELECTRICAL...

Page 3: ...cifications 5 1 Ratings Specifications 24 5 2 Dimensional Data 25 WARNING If the information in these instructions are not followed exactly a fire may result causing property damage personal injury or...

Page 4: ...unting Detail AVP24 36 15 Figure 6a Thermostat Wiring Detail 18 Figure 6b Thermostat Connection Diagram 18 Figure 7 Typical Configuration for Single Element Heater 23 Figure 8a ModPac II A C Dimension...

Page 5: ...scription Model Identification Air Source Vertical Package Nominal Cooling 24 24 000 BTUH 42 42 500 BTUH 30 29 400 BTUH 48 48 000 BTUH 36 36 000 BTUH 60 56 000 BTUH System Type Air Conditioner Power S...

Page 6: ...warmed refrigerant gas enters the compressor where its temperature and pressure are increased The hot refrigerant gas condenses to liquid as heat is transferred to outdoor air blown across the condens...

Page 7: ...ModPac II 9 09 15 Figure 1 Typical Electric Schematic for Models AVP24 60...

Page 8: ...empt to start the compressor after 24 hours 3 If the compressor will not start makes excessive noise or will not pump return the unit to the freight carrier 2 2 Installation Requirements General 1 Ins...

Page 9: ...uring warm ambient temperatures proper condenser air is essential The condenser air is brought into the condenser compartment through grilles on each side of the unit The condenser air is discharged t...

Page 10: ...e air Multiply the temperature by A c B is the quantity of return air expressed as a percentage of C A and B must equal 100 Measure the temperature of the indoor return air Multiply the temperature of...

Page 11: ...0676 VPG 40S 30 x 10 Adjustable Aluminum Double Deflection Supply Grille for AVP 42 48 60 80677 VPG 20R 20 x 12 Aluminum Return Grille for AVP 24 80678 VPG 30R 28 x 14 Aluminum Return Grille for AVP 3...

Page 12: ...dance with the current edition of the National Fire Protection Association codes and standards 90A and 90B The duct Warning FIRE HAZARD Improper adjustment alteration service maintenance or installati...

Page 13: ...sq ft 42 48 60 50 3 90 sq ft system must be engineered to insure sufficient air flow through the unit to prevent over heating of the heater element This includes proper supply duct sizing sufficient...

Page 14: ...oFigure5 Attachthebottomsupportbrackettothewallusingappropriate3 8 diameter hardware For example on wooden structures use 3 8 x 2 1 2 inch all thread lag screws The screws must penetrate the center of...

Page 15: ...odPac II A C on the bottom sup port bracket mounted on the wall You must stabilize the unit on the bracket with the lifting device or by some other means the bracket alone is not sufficient 4 Make sur...

Page 16: ...ion depending upon phasing of power Since there is a 50 50 chance of connecting power in such a way as to cause rotation in the reverse direction it is imperative to confirm that the compressor is rot...

Page 17: ...lectrical Code for complete current carrying capacity data on the various insulation grades of wiring materials 2 Connect the wires to the input side of the internal breaker L1 L2 for single phase uni...

Page 18: ...ram R G Y W C O B O B Rc RH G Y W C O B R G Y W C MARVAIR SIMPLE COMFORT THERMOSTAT CONNECTION DIAGRAM FOR MARVAIR MODPAC II AIR CONDITIONERS LOW VOLTAGE TERMINAL BOARD THERMOSTAT PART NUMBER 50121 SC...

Page 19: ...ature until the switch closes The indoor fan should operate Once the indoor fan turns on allow approximately three minutes for the compressor to start Note that the outdoor fan may not come on immedia...

Page 20: ...visual check are there loose wires crimped tubing missing parts etc Begin deeper analysis only after making this initial inspection The troubleshooting information in this manual is basic The trouble...

Page 21: ...for airflow restrictions e g the air filter Check blower motor and condenser fan 2 Check for blockage or restriction especially filter drier and capillary tube assembly 3 Evacuate and recharge to fact...

Page 22: ...the motor winding resistances NOTE Feel the top of the compressor to see if it has overheated If it is hot the internal overload may be open You may have to wait several hours for it to reset 3 Motor...

Page 23: ...urce of the overheat problem is resolved In addition to the thermal cut out switch described above there is a single function thermal cut out switch P N 70005 mounted on the heater frame This switch c...

Page 24: ...24 860 810 670 30 1100 1000 920 810 36 1310 1220 1150 1060 42 1650 1520 1450 1360 48 1900 1760 1700 1620 60 1900 1760 1700 1620 CFM Cubic Feet per Minute Indoor Air Flow ESP External Static Pressure...

Page 25: ...dPac II 9 09 15 Figure 8a AVP24 36 ModPac II A C N Configuration In Inches Figure 8b AVP42 60 ModPac II A C N Configuration In Inches 5 2 Dimensional Data DIMENSIONS AVPA 24 36 N DAMPER AVPA 24 AVPA 3...

Page 26: ...26 ModPac II 9 09 15 Figure 8c AVP24 36 ModPac II A C B Configuration In Inches Figure 8d AVP42 60 ModPac II A C B Configuration In Inches AVPA 24 AVPA 30 36...

Page 27: ...dried before restarting Condenser Periodically inspect the outdoor condenser coil and the cabinet air reliefs for dirt or obstructions Remove foreign objects such as leaves paper etc If the condenser...

Page 28: ...r this warranty Marvair will honor its warranty and furnish the required replacement part All costs for shipment and risk of loss during shipment of the product to Marvair and back to the owner shall...

Page 29: ...can be found on our web site at www marvair com Click on the Service and Parts in the menu on the left hand side of the Home page From the drop down menu select Exploded Views Once here you can select...

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