Sign In
Upload
Download
Table of Contents
Contents
Add to my manuals
Delete from my manuals
Share
URL of this page:
HTML Link:
Bookmark this page
Add
Manual will be automatically added to "My Manuals"
Print this page
×
Bookmark added
×
Added to my manuals
Manuals
Brands
Bard Manuals
Air Conditioner
MEGA-TEC W090A
Service instructions manual
Bard MEGA-TEC W090A Service Instructions Manual
Wall-mount air conditioner
Hide thumbs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
page
of
159
Go
/
159
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Service Instructions
Table of Contents
General Information
Multi-Stage Cooling System
Wall-Mount Air Conditioner Units
General
Shipping Damage
Additional Publications
Using the TEC-EYE TM
TEC-EYE Hand-Held Diagnostic Tool
Figure 1 TEC-EYE Display and Interface
Figure 2 TEC-EYE Connection to Unit Control
Figure 3 Quick Menu Icons
Figure 4 Cool and Heat Setpoints
Main Status Screen
Quick Menu
Setpoints
TEC-EYE Acronyms
TEC-EYE Menu Structure
A/C Circuit Information
Figure 5 MEGA-TEC Refrigeration Circuits
Figure 6 A/C Circuit Measurements
Information
Alarm Log
Executing a Self Test
Figure 7 Software Version
Menu Screens and Password Levels
Program Version
Software Versioning Guide
Figure 8 Executing Self Test
Figure 9 Restoring Factory Default Settings
Reset to Factory Defaults
Self Test Parameter Descriptions
Operation
Unit On/Off
Alarm Adjustment
Acknowledging Alarms
Clearing Alarm Logs and Counters
Clearing Alarms
Exporting Alarm Logs
Figure 10 Clearing All Alarms
Figure 11 Clearing Alarm Logs and Counters
Configuration File
Exporting 7 Day Logs
Zone
Temperature Control
Figure 12 Changing Zone
Figure 13 Adjusting Return Air Temperature Sensor
Return Air Temperature Alarm
Return Air Temperature Sensor
Temperature Control Components
Cooling (with Economizer)
Cooling (Without Economizer)
Figure 14 Cooling (with Economizer)
LC6000 Control
Orphan Mode
Temperature Control Operation
Heating
Electronic Expansion Valve (EEV)
EEV Components
EEV Instructions for Vacuum, Reclaim, Charge Unit
Electronic Expansion Valve
Figure 15 Cooling (Without Economizer)
Figure 16 Heating
Figure 17 Overriding EEV Output
Figure 18 Electronic Expansion Valve (EEV) and Service Tool
Figure 19 Adjusting Suction Sensor/Transducer Pressure Values
Suction Pressure Transducer
System Pressures
Troubleshooting the Suction Pressure Transducer
Evaporator Freeze Condition Alarm
Figure 20 Voltage to Pressure: Suction Pressure Transducer
Figure 21 Adjusting Suction Temperature Sensor Values
Suction Pressure Alarm
Suction Temperature Alarm
Suction Temperature Sensor
Additional EEV Alarms
EEV Operation
EEV Superheat Control
Low Superheat Alarm
Indoor Airflow
Blower
Figure 22 Adjusting Evaporator Freeze Sensor Values
Figure 23 Putting Blower Output into Override Mode
Indoor Airflow Components
Blower Status Alarm
Blower Status Switch
Dirty Filter Switch
Figure 24 Dirty Filter Switch and Blower Status Switch
Figure 25 Verifying Differential Airflow Status
Filters
Blower Speed Control
Dirty Filter Alarm
Figure 26 Dirty Filter Switch and Filter Indicator Light
Filter Indicator Light
High Sensible Operation
Indoor Airflow Operation
Additional Indoor Airflow Alarms
Balanced Climate
Supply Air Temperature Alarm
Condenser Fan
Condenser Fan Components
Figure 27 Enabling/Disabling High Sensible or Balanced Climate Operation
Figure 28 Enabling Fan Override
Figure 29 Adjusting Discharge/Liquid Transducer Pressure Values
Figure 30 Voltage to Pressure: Discharge/Liquid Pressure Transducer
Liquid Pressure Sensor
Troubleshooting the Discharge/Liquid Pressure Transducer
Condenser Fan Operation
Condenser Fan Speed Control
Discharge/Liquid Pressure Transducer Alarm
Liquid Temperature Sensor
Outdoor Temperature Sensor
Compressor
Compressor Components
Figure 31 Adjusting Discharge/Liquid Temperature Input
Brownout Protection W/Adjustment
Compressor
Compressor Control Module (CCM)
Delay-On-Make Timer
Figure 32 8201-164 Compressor Control Module
High Pressure Detection
Short Cycle Protection/Delay-On-Break
Test Mode
High Pressure Safety Switch
Phase Monitor
Refrigerant High Pressure Alarm
Additional Compressor Alarms
Compressor Operation
Refrigerant Low Pressure Alarm
Economizer
Actuator
Economizer Components
Figure 33 Adjusting Compressor Delays
Figure 34 Damper Override
Dust Sensor
Dust Sensor Failure Alarm
Figure 35 Dust Sensor
Figure 36 Adjusting Dust Sensor Alarm Setpoint
High Dust Limit Alarm
Damper Blade
Damper Failed to Close Alarm
Damper Failed to Open Alarm
Damper Switch
Figure 37 Damper Blade Position
Figure 38 Damper Switch
Figure 39 Outdoor Temperature Sensor
Figure 40 Outdoor Humidity Sensor
Mixed Air Temperature Sensor
Outdoor Humidity Sensor Failure Alarm
Outdoor Temperature and Humidity Combination Sensor
Outdoor Temperature Sensor Failure Alarm
Economizer Operation
Figure 41 Mixed Air Temperature Sensor
Figure 42 Economizer Setup
High Mixed Air Temperature Alarm
Low Mixed Air Temperature Alarm
Figure 43 Economizer Setup - Dry Bulb Control
Figure 44 Economizer Setup - Temphum Control
Figure 45 Economizer Setup - Enthalpy Control
Economizer Operation - Minimum Position
Miscellaneous Components
Supply Temperature Sensor
Supply Temperature Sensor Failure Alarm
Emergency Cooling Mode
Emergency Cooling − Orphan Mode
Figure 46 Supply Air Temperature Sensor
Emergency Ventilation Mode
Electric Heat Option
Electric Heat Components
Electric Heat Operation
Electric Heating Element
Electric Reheat Dehumidification
Figure 47 Emergency Cool − Orphan Mode
Figure 48 Adjusting Return Air Alarm Settings
Thermal Overload
Electric Reheat Dehumidification Operation
Figure 49 Electric Reheat Dehumidification
Figure 50 Dehumidification Control (°F)
Figure 51 Unit Disable Option
Figure 52 Damper Power Output
Unit Disable Option
Figure 53 Override Damper Output
Figure 54 Serial/Model Number Configuration
Serial/Model Number Configuration
Figure 55 MEGA-TEC Model Nomenclature
Refrigerant Information
General
Topping off System Charge
Safety Practices
Important Installer Note
R410-A Refrigerant Charge
Pressure Service Ports
Maintenance
Standard Maintenance Procedures
Troubleshooting
Figure 56 Sensors and Peripheral Devices
Figure 57 Supply and Return Air Sensors
8301-089 Outdoor Temperature/Humidity Sensor
Figure 58 8301-089 Sensor DIP Switches and Terminal Block
8620-296 Supply Air Sensor/Return Air Sensor/Mixed Air Sensor/Suction Sensor/Liquid Sensor
8301-057 Blower Status Switch/Dirty Filter Switch
Figure 59 8301-057 Air Differential Switch
Alarm Index
Figure 60 Disconnect Condenser Fan Communication Wires
Figure 61 Unplug Modbus from Expansion Module
Figure 62 Verify Modbus Is Connected to PLC Board
Figure 63 Verify Blower Is Online
Figure 64 Reverse Polarity of Wires from Blower Motor
Modbus Troubleshooting for MEGA-TEC
Figures and Tables
Figure 65 DIP Switch Location
Figure 66 Check DIP Switch Position
Figure 67 Ventilation Airflow Paths
Table of Contents
General Information
List of Necessary Materials/Tools
Site Preparation
Model Identification
New Shelter Installation Vs. Retrofit Installation
Minimum Clearance
Clearance to Combustibles
Wall-Mount Unit Mounting
Mounting the Units
Wall-Mount Unit Wiring
Main Power Wiring
Unit Control Voltage Wiring
230/208V Wiring
460V Wiring
Preliminary Start up
Running in Orphan Mode
LC6000 Controller Installation
LC6000 Controller
Mounting the LC6000 Controller
Installing Remote Indoor Temperature/Humidity Sensor(S)
Sensor
Communication Wiring
Controller
Supply Wiring
System Set up
TEC-EYE Hand-Held Diagnostic Tool
TEC-EYE Status Screen
Setting up Wall-Mount Units for Operation
Address each Wall-Mount Unit
Execute a Self Test on each Unit
Clear Unit Alarm Logs on each Unit
Setting up LC6000 for Operation
Configure Sensors
Set LC Controller Date and Time
Enter Total Number of Units
Select Economizer Type for each Zone
Verify Units Are Online
10. Complete Installation
Clear Controller Alarm Logs
Additional Information
Menu Screens and Password Levels
Setpoints
Calibrating Sensors
Remote Indoor Temperature/Humidity Sensor
General
General
Attaching Gauge Manifold
Gauge Manifold
Leak Detectors
Recovery Equipment Rated for R-410A
Attaching Manifold Hose to Schrader Valve
Evacuation
Leak Test
Charging
Charging the System by Weight
Preliminary Charging Steps
Troubleshooting the Mechanical System
Air Conditioning & Heat Pump - Cooling
Heat Pump - Heating
High Suction - High Head Pressure
High Suction - Low Head Pressure
Low Suction - High Head Pressure
Low Suction - Low Head Pressure
Advertisement
Quick Links
1
Wall-Mount Air Conditioner Units
Download this manual
Literature Assembly
911-0769
Contains the following:
2100-671(C)
2100-034(F)
2100-705(B)
2100-479
Mega-Tec PKG A/C Manual
User's Guide
Mega-Tec A/C Install Instructions
Leak Test, Evacuation, Charging
Table of
Contents
Previous
Page
Next
Page
1
2
3
4
5
Advertisement
Chapters
Service Instructions
4
Table of Contents
64
General
107
Table of Contents
Troubleshooting
System Pressures
18
Liquid Pressure Sensor
24
Troubleshooting
45
Modbus Troubleshooting for MEGA-TEC
55
Need help?
Do you have a question about the MEGA-TEC W090A and is the answer not in the manual?
Ask a question
Questions and answers
Related Manuals for Bard MEGA-TEC W090A
Air Conditioner Bard WA423 Installation Instructions Manual
Wall mounted package air conditioners (21 pages)
Air Conditioner Bard 357-93-E Specifications
Bard wl series wall mount air conditioners with left side control panel model 357-93-e (12 pages)
Air Conditioner Bard WG-Series User's Information Manual
Combination gas/electric wall-mount (15 pages)
Air Conditioner Bard W12A2-A Installation Instructions Manual
Wall mounted package air conditioners (17 pages)
Air Conditioner Bard W18A1 Installation Instructions Manual
Wall mounted package air conditioners (25 pages)
Air Conditioner Bard W17A1 Specifications
The wall-mount air conditioners - 9.0 eer, (60hz) (12 pages)
Air Conditioner Bard WA3S Manual
S series step capacity air conditioners (12 pages)
Air Conditioner Bard WA361 Installation Instructions Manual
Wall mounted packaged air conditioners (19 pages)
Air Conditioner Bard WA181 Installation Instructions Manual
Wall mounted packaged (18 pages)
Air Conditioner Bard WA182 Installation Instructions Manual
Wall mounted packaged air conditioner (18 pages)
Air Conditioner Bard WERV-A5B?WERV-C5B Installation Instructions Manual
Wall mount energy recovery ventilator with exhaust. for use with bard 3-1/2 thru 5 ton wall mount air conditioners and heat pumps (20 pages)
Air Conditioner Bard FUSION-TEC WR35BPA Service Instructions Manual
Wall-mount (56 pages)
Air Conditioner Bard WA Series Installation Instructions Manual
Wall mount air conditioner (72 pages)
Air Conditioner Bard 11EER WA Series Installation Instructions Manual
Wall mount air conditioner (42 pages)
Air Conditioner Bard W36ABRC Installation Instructions Manual
Wall mount air conditioner (42 pages)
Air Conditioner Bard W42AC-B Installation Instructions Manual
Wall mount air conditioner (42 pages)
This manual is also suitable for:
Mega-tec w120a
Mega-tec w150a
Table of Contents
Print
Rename the bookmark
Delete bookmark?
Delete from my manuals?
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL
Need help?
Do you have a question about the MEGA-TEC W090A and is the answer not in the manual?
Questions and answers