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Marvair ModPac Installation & Operation Manual
11/2017 Rev.8
Table of Contents
Chapter 1. ModPac Description & Specifications
1.1 General Description ..................................................................................................................................5
1.2 Model Identification .................................................................................................................................5
1.3 Serial Number Date Code ........................................................................................................................5
1.4 General Operation ....................................................................................................................................6
1.5 M5 Configuration .....................................................................................................................................6
1.6 A2 Internal Disconnect .............................................................................................................................6
1.7 Elcontronic Control Board Modes of Operation ......................................................................................6
1.8 Electrical Diagrams ..................................................................................................................................8
Chapter 2. Installation
2.1 Equipment Inspection .............................................................................................................................10
2.2 Installation Requirements .......................................................................................................................10
2.3 Installation Materials ..............................................................................................................................12
2.4 Porting and Duct Work ...........................................................................................................................14
2.5 Fresh Air Hood Installation ....................................................................................................................15
2.6 Bottom Bracket Installation ...................................................................................................................15
2.7 Mounting the Unit ..................................................................................................................................16
2.8 Electrical Connections ............................................................................................................................17
Chapter 3. Start-Up
3.1 Check-Out of Cooling Cycle .................................................................................................................20
3.2 Check-Out of Heating Cycle ..................................................................................................................20
Chapter 4. Troubleshooting
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
WARNING
• If the information in these instructions are not followed exactly, a fire may result
causing property damage, personal injury or loss of life.
• Read all instructions carefully prior to beginning the installation. Do not begin
installation if you do not understand any of the instructions.
• Improper installation, adjustment, alteration, service or maintenance can cause
property damage, personal injury or loss of life.
• Installation and service must be performed by a qualified installer or service agency in
accordance with these instructions and in compliance with all codes and requirements
of authorities having jurisdiction.
