Marvair AVPA 12 Installation & Operation Manual
9 eer vertical wall-mount air conditioners
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Air Conditioner Product Manual
Vertical Wall-Mount Air Conditioners
with Front Control Box Panel
Installation & Operation Manual
9 EER Vertical Wall-Mount Air Conditioners
MODELS:
AVPA 12-20-24-30-36-42-48-60
IMPORTANT
This manual may include information for options and features which may not be
included on the unit being installed. Refer to the unit data label or Model Identification
to determine which features and options this unit is equipped with.
INSTALLER: Affix the instructions on the inside of the building adjacent to the thermostat.
END USER: Retain this manual for future reference.
Manufactured By:
A Division of the AIRXCEL
Commercial Group
®
P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015
(229) 273-3636 • Fax (229) 273-5154
E-mail: marvairsales@airxcel.com • Internet: www.Marvair.com
The most current version of this manual can be found at www.Marvair.com.
Marvair ModPac Installation & Operation Manual 11/2017 Rev. 8
Part #01690
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Table of Contents
Troubleshooting
Related Manuals for Marvair AVPA 12
Summary of Contents for Marvair AVPA 12
- Page 1 P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015 (229) 273-3636 • Fax (229) 273-5154 E-mail: marvairsales@airxcel.com • Internet: www.Marvair.com The most current version of this manual can be found at www.Marvair.com. Marvair ModPac Installation & Operation Manual 11/2017 Rev. 8 Part #01690...
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Page 2: How To Use This Manual
How To Use This Manual This manual is intended to be a guide to the Marvair ModPac family 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. -
Page 3: Table Of Contents
4.1 Overview ..............................21 4.2 Failure Symptoms Guide ........................22 4.3 Compressor Troubleshooting .........................23 4.4 Electric Heat Controls ..........................24 Chapter 5. Ratings & Specifications 5.1 Ratings & Specifications ........................25 Chapter 6. Maintenance 6.1 Scheduled Maintenance ..........................26 Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... - Page 4 Minimum Clearances ......................11 Table 2. Voltage Limitations ........................ 11 Table 3. Maximum Static Pressure ......................15 Table 4. CFM @ ESP ...........................25 Table 5. Filter Sizes ..........................25 Table 6. Shipping Weights ........................25 Marvair ModPac Installation & Operation Manual 11/2017 Rev.8...
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Page 5: Chapter 1. Modpac Description & Specifications
12,000 to 56,500 BTUH. Resistance heating elements are available in various wattages. See Appendix A for instructions on field installation of electric heat. Marvair's ModPac models are designed for easy installation and service. Major components are accessible for service beneath external panels. Model Identification •... -
Page 6: General Operation
The compressor will remain energized during the 3 minute timed low pressure by-pass cycle. If the low pressure switch (LPS) is open after the 3 minute by-pass cycle, the compressor will de-energize. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... - Page 7 40 PSIG; it resets when the pressure rises to 60 PSIG. The switch protects the unit if airflow through the indoor blower is impeded, if the blower motor fails, or if there is a loss of refrigerant. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8...
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Page 8: Electrical Diagrams
The required minimum circuit ampacity (MCA)and maximum fuse size (MFS) for this breaker will be marked on the unit's Data Info in the single point power entry (SPPE) column. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 9: Figure 1. Typical Electrical Schematic For Units With The Pc Board
Figure 1. Typical Electrical Schematic for Air Conditioners with the PC Board Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 10: Chapter 2. Installation
4. Airflow Requirements: Note the minimum CFM requirements (section 2.4). Keep duct lengths as short as possible. Do not obstruct airflow through the unit. Applications using duct work should be designed and installed in accordance with all applicable safety Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 11: Table 1. Minimum Clearances
Table 3, Air Flow (CFM) at Various Static Pressures. This CFM is referred to as "C" in the illustration and equation below. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 12: Installation Materials
All ModPac units have built-in side flanges that function as side brackets. All models, except for the AVPA12, require and are shipped with a bottom mounting bracket. There is also an air intake hood factory installed behind the lower front panel. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... - Page 13 4-conductor low voltage multi-colored wire cable (i.e. thermostat wire) • Appropriate electrical supplies such as conduit, electrical boxes, fittings, wire connectors, etc. • High voltage wire, sized to handle the MCA (minimum circuit ampacity) listed on the data plate. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8...
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Page 14: Porting And Duct Work
.019" for the first three feet. Duct work must be firmly attached, secured and sealed to prevent air leakage. Do not use duct liner on inside of supply duct within four feet of the unit. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 15: Fresh Air Hood Installation
For example, on wooden structures, use 3/8 x 2-1/2 inch all-thread lag screws. The screws must penetrate the center of the wall stud. Drill a pilot hole in the stud to prevent it from splitting. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 16: Mounting The Unit
6. Apply a bead of silicone where the flashing and side brackets contact the unit and the building wall. 7. Fasten the flashing to the unit casing and the building wall using #10 x 1/2 inch sheet metal screws. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 17: Electrical Connections
To change the rotation, turn off power to the unit and swap L1 and L2 at the disconnect or circuit breaker. High Voltage Wiring The power supply should have the proper voltage, phase, and ampacity for the selected model. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... - Page 18 Figure 6. 3. Attach the thermostat assembly to the sub-base. Check the heat anticipator settings - it should read .40. THE INTERNAL TRANSFORMER IS NOT DESIGNED TO POWER OTHER EXTERNAL DEVICES. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8...
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Page 19: Figure 5. Thermostat Connection Diagram
SIMPLE COMFORT THERMOSTAT CONNECTION DIAGRAM for Marvair Heat Pumps and Air Conditioners (without hot gas reheat or electric heat) Figure 5. Thermostat Connection Diagram Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 20: Chapter 3. Start-Up
Automatic and On positions, a system switch with Heat, Cool, and Off positions. The product data sheets have detailed description of the various Marvair thermostats. Since other thermostats or remote control systems may be used, the following procedures should be viewed as guidelines for standard thermostats with system and fan switches. -
Page 21: Chapter 4. Troubleshooting
Use safety goggles when servicing the refrigeration circuit. WARNING The refrigerant circuit has hot surfaces, and the electrical voltages inside of the unit may be hazardous or lethal. SERVICE SHOULD BE PERFORMED ONLY BY QUALIFIED AND EXPERIENCED PERSONS. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 22: 4.2 Failure Symptoms Guide
1. Check resistance element(s) for continuity. reduced heating (units 2. Thermal limit open. 2. Check continuity across thermal limit switch. equipped with resistance elements) 3. Defective heater contactor. 3. Check for proper operation. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 23: Compressor Troubleshooting
A short circuit at high voltages indicates a motor defect. Do not do this test under vacuum. 5. On single phase models, check the capacitor by substitution. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 24: Electric Heat Controls
This single function switch is also non-resettable, and must be replaced by qualified service personnel after the source of the overheat problem is resolved. This switch would typically open if both elements of the dual thermal cut-out switches failed. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 25: Chapter 5. Ratings & Specifications 5.1 Ratings & Specifications
"N", "Z" & "Y" Ventilation Configuration 165.91 239.55 250.91 256.82 “B” Table 6. Shipping Weights Complete performance, electrical specifications and dimensional drawings can be found in the ModPac air conditioner Product Data Sheet. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 26: Chapter 6. Maintenance
If a commercial drain solvent is used, flush out the drain pan and system with plenty of fresh water to prevent corrosion. Lubrication Oiling of the condenser fan motor or the evaporator blower motor is not required. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8... -
Page 27: Marvair Modpac Installation & Operation Manual 11/2017 Rev.8
EXTENT PERMITTED BY LAW. IN NO EVENT SHALL ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR USE EXCEED THE TERMS OF THE APPLICABLE WARRANTY STATED ABOVE AND AIRXCEL COMMERCIAL GROUP SHALL HAVE NO OTHER OBLIGATION OR LIABILITY. IN NO EVENT SHALL MARVAIR BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OR MONETARY DAMAGES. -
Page 28: Exploded Views & Parts Lists
EXPLODED VIEWS AND PARTS LISTS Current parts lists and exploded views of the unit 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. - Page 29 15. Place the wiring diagram provided with the heater kit inside the zip lock bag which is affixed to the back side of the control box cover. 16. Replace the control box cover, the bottom front cover and the top front panel. Marvair ModPac Installation & Operation Manual 11/2017 Rev.8...
- Page 30 Marvair ModPac Installation & Operation Manual 11/2017 Rev.8...
- Page 31 Notes Marvair ModPac Installation & Operation Manual 11/2017 Rev.8...
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