Marvair AVP 24 Manuel

Chapter 1 Description ... 5Chapter 2 Installation ... 18Chapter 3 Start-Up ...

10ComPac 6/09-181.6 eleCTroniC ConTrol boarD MoDe of operaTion (aVp24-72)Normal24 VAC power must be continuously applied to “R” and “C”. Upon a cal

11ComPac 6/09-18Low Ambient ControlThe low ambient control permits cooling when outdoor ambient temperatures are low. The control uses a reverse-

12ComPac 6/09-181.7 opTional ConTrols & paCkaGesHard Start KitUsed on single phase equipment to give the compressor higher starting torque unde

13ComPac 6/09-18electric reheat operate to temper the air and lower the humidity. If the temperature in the controlled environment rises above the s

14ComPac 6/09-18Figure 3a. Typical Electrical Schematic - ComPac® I A/C, Models AVP24-72 with Electronic Control Board56TRANSFORMER

15ComPac 6/09-185TRANSFORMEROPTIONAL FIELD INSTALLED 270 OHMS MINIMUM POSITION POTENTIOMETER.Figure 3b. Typical Electrical Schematic - ComPac® II

16ComPac 6/09-181.9 eConoMizer CoMponenTs (CoMpaC® ii a/C only)Damper Actuator:The damper actuator is a 24V motor that modulates the position of th

17ComPac 6/09-18Mixed Air Sensor:The mixed air sensor is a thermistor mounted on a bracket adjacent to the right side of the blower assembly. The

18ComPac 6/09-182.1 equipMenT inspeCTionConcealed Damage Inspect all cartons and packages upon receipt for damage in transit. Remove cartons an

19ComPac 6/09-18Installation Kits The ComPac® I and ComPac® II A/C units, models AVP24-72, are shipped with one 12 Ga. "L" shaped bott

2ComPac 6/09-18How To Use This Manual This manual is intended to be a guide to Marvair's ComPac® line of vertical air conditioners. It contain

20ComPac 6/09-18P/N DescriptionS/04581 CommStat 3™ Controller, Solid State Lead/Lag ControllerS/07529 LL357D4,

21ComPac 6/09-182.4 porTinG anD DuCT Work (aVp24-72)General Information Note: The following instructions are for general guidance only. Due to th

22ComPac 6/09-182.5 Fresh Air Hood Installation (AVP24-30-36)1. Cut and remove insulation on the inside of the lower front access panel in the sha

23ComPac 6/09-18Figure 7. ComPac® I and ComPac® II A/C Wall Mount Detail (AVP24-72)SUPPLY AIRRETURN AIRFOAM SEALDUCT EXTENSIONS (Not Supplied wi

24ComPac 6/09-182.8 eleCTriCal ConneCTionsImportantAll electrical work must meet the requirements of local codes and ordinances. Work should be do

25ComPac 6/09-184. For units designed for operation on 208/230v, 60Hz power supply, the transformer is factory wired for a 230v power supply. For

26ComPac 6/09-18It can be used with Marvair’s ComPac® I or II unique vertical packaged wall mount air conditioners or Marvair’s environmental contr

27ComPac 6/09-18Figure 8a. Thermostat Wiring DetailsW2GXHERAYOW2GCRAYOHEAT PUMP* LOW VOLTAGE SECTIONThermostatField SuppliedSeven (7) Conductor, Co

28ComPac 6/09-18Figure 8c. LL357D4 Wiring Diagram & Thermostat KeysR G Y W C O BO/BRc RH G Y W C O BR G Y W C 10 8 3 1 4 9 2

29ComPac 6/09-18Figure 8d. CommStat 3™ Wiring DiagramUNIT 1COMMSTAT 3™UNIT 2CNONCNOCNCALARMCONTACTSDRYHIGH BLDG TEMPCONTACTSDRYNOCNCLOW BLDG TEMPOU

3ComPac 6/09-18Table of ConTenTsChapter 1 ComPac® A/C Description & Specications 1.1 General Description ...

30ComPac 6/09-183.1 CheCk-ouT of CoolinG CyCleImportant: Be sure that the crankcase heater (if used) has been energized for at least 24 hours befo

31ComPac 6/09-183.3 a/C TesTinG WiTh ll357D4Note: The LL357D4 does not require the units to be in phase.Procedure: (A/C Testing with LL357D4 Lead/L

32ComPac 6/09-184.1 OverviewA comprehensive understanding of the operation of the ComPac® A/C is a prerequisite to troubleshoot-ing. Please read t

33ComPac 6/09-184.3 Compressor TroubleshootingNOTE: It is important to rule out other component failures before condemning the compressor. The fol

34ComPac 6/09-18NOTE: 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 t

35ComPac 6/09-185.1 sCheDuleD MainTenanCeMarvair® strongly recommends that the air conditioner be serviced a minimum of twice a year – once prior t

36ComPac 6/09-18Chapter 6 Warranty6.1 liMiTeD proDuCT WarranTyIf any part of your Marvair® Air Conditioner, Heat Pump or Unit Ventilator fails bec

37ComPac 6/09-186.2 Optional Silver ServiceIf any part of your Marvair® Heat Pump or Air Conditioner fails because of a manufacturing defect with

38ComPac 6/09-18EXPLODED VIEWS AND PARTS LISTS Current parts lists and exploded views of the unit can be found on our web site at www.marvair.com

4ComPac 6/09-18IllustrationsFigure 1a. ComPac® I & II A/C Dimensions - Models 24-36 ...

5ComPac 6/09-181.1 General DesCripTionMarvair's ComPac® lines are a series of vertical wall-mounted air conditioning systems that provide heat

6ComPac 6/09-181.4 Ratings & SpecicationsTable 1. CFM @ External Static Pressure (Wet Coil) (IWG)Table 2. Ship WeightTable 3. Filter SizeMO

7ComPac 6/09-18Figure 1b. ComPac® I A/C & ComPac® II A/C Dimensions- Models AVP42-60 (in inches)Figure 1a. ComPac® I & ComPac® II A/C Dime

8ComPac 6/09-18Figure 1c. ComPac® I A/C & ComPac® II A/C Dimensions- Models AVP72 (in inches & mm)

9ComPac 6/09-181.5 General OperationRefrigerant Cycle (Cooling Mode)The ComPac® I & ComPac® II A/C use R-22 refrigerant in a conventional vapor