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Marvair MGA3090A
Airxcel Marvair MGA3090A Manuals
Manuals and User Guides for Airxcel Marvair MGA3090A. We have
1
Airxcel Marvair MGA3090A manual available for free PDF download: Installation & Operation Manual
Airxcel Marvair MGA3090A Installation & Operation Manual (44 pages)
10EER 7.5 & 10 Ton Vertical Wall Mount
Brand:
Airxcel
| Category:
Air Conditioner
| Size: 2 MB
Table of Contents
Table of Contents
3
Chapter 1 Air Conditioner Description & Specifications
5
General Description
5
Model Identification
6
Serial Number Date Code
6
Capacities, Weights and Filter Sizes
6
Table 1 Efficiency and Capacity Ratings at ANSI/AHRI Standard 390
7
Table 2 Sensible Capacities - Single Compressor
7
Table 3 Sensible Capacities - Dual Compressor
7
Table 4 Single Compressor Cooling Performance (BTUH) at Various Outdoor Temperatures
8
Table 5 Dual Compressor Cooling Performance (BTUH) at Various Outdoor Temperatures
8
Table 6 Economizer Cooling Performance
8
Table 7 Return Air Filter Sizes
8
Table 8 S Hipping Weights & Dimensions
8
General Operation
9
Programmable Logic Controller (PLC)
9
Figure 1. PLC
10
1.7 Unit Operation
11
Optional Controls and Packages
13
1.9 Electrical Operation
13
Figure 2. Typical Electrical Schematic
14
Chapter 2 Electronic Control Board
15
Introduction
15
Installation and Replacement
16
Operation
16
Figure 3A. Setting the Speed for the Y1 and Y2 Operation for Indoor Motor
17
Figure 3B. Second Stage Cooling Speed
17
Figure 4. Output Termination for Indoor Motor Control Signal
18
Figure 5. Outdoor Motor Speed Setting
18
Figure 6. Output Termination for Outdoor Motor Control Signal
18
Figure 7. Communications Setup
19
Sequence of Operation
20
Table 9 MODBUS Network Address DIP Swith Positions
20
Table 10A. MODBUS Discrete Registers
24
Table 10B. MODBUS Registers
25
Chapter 3 Installation
26
Equipment Inspection
26
Installation Requirements
26
Installation Materials
27
Table 11 Minimum Clearances
27
Table 12 Voltage Limitations
27
Porting and Duct Work
29
Top Flange Installation
29
Installing the Lifting Brackets
30
Mounting the Unit
30
Figure 8. Top Flange and Lifting Bracket Installation
30
Electrical Connections
31
Figure 9. Wall Mounting Detail
31
Figure 10A. Thermostat Connection Diagram
34
Figure 10B. Commstat™ 3 Wiring Detail
34
Chapter 4 Start-Up
35
Check-Out of Cooling Cycle
35
Check-Out of Heating Cycle
35
Chapter 5 Troubleshooting
36
Overview
36
Failure Symptoms Guide
37
Compressor Troubleshooting
37
Chapter 6 Maintenance
39
Scheduled Maintenance
39
Chapter 7 Warranty
40
Limited Product Warranty
40
Chapter 8 Start-Up Check List
41
Start-Up Check List
41
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