Emerson Liebert iCOM User Manual Page 172
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Service Menu Parameters
Liebert
®
iCOM
®
162
8.8 Service-Economizer Menu Screens
Economizer provides advanced air side Economizer monitoring and parameter adjustment
Figure 151 Economizer, page 1 of 3
SA02 Enable Economizer—Sets the Liebert Air Economizer
™
operation to one of the following
modes. These selections only determine if the Liebert Air Economizer is available for use; they do not
determine or override damper position. Damper position is always controlled by the sensor set to
control temperature (i.e., Return / Supply Sensor)
• Yes: This parameter will operate the Liebert Air Economizer based on the outdoor sensor reading
and will allow the Liebert iCOM to determine if the conditions are within the acceptable range of
operation.
• NO: This parameter will disable the Liebert Air Economizer and will not allow Liebert Air
Economizer to operate even if the outdoor conditions are acceptable.
• Remote: This parameter will enable the Liebert Air Economizer and ignore the outdoor Liebert
iCOM sensor even if the conditions are outside the range of operation.
SA04 Humidity Ratio—Sets the minimum and maximum limits of outdoor air based on the amount
of moisture content. The humidity ratio is set based on pounds of moisture per pound of dry air. This
is equivalent to the dew point temperatures.
SA05 Wet Bulb Temp—Read-only value that displays the outdoor wet bulb temperature. (This
reading will be in metric values.)
SA06 Outdoor Temp—Displays the actual outdoor temperature based on the Temperature
Humidity sensor (Sensor C). When this parameter shows OK, the outdoor temperature requirements
have been met to use economization. When NOK is shown, the outdoor temperature is outside the
operating range set in the Liebert iCOM control.
SA07 Stop ECO at Setpoint + —Sets the temperature when the Liebert Air Economizer will be
disabled due to an increasing outdoor air temperature. This parameter is added to the return air
sensor setpoint and then compared to the outdoor temperature reading. If the outdoor temperature
reading exceeds the return air temperature setpoint plus this parameter, the Liebert Air Economizer
will be disabled. This is factory-set at 20°F (-6.7°C).
SA08 Economizer Mode—Displayed when the Liebert Air Economizer is available for use.
SA09 Dew Point (calculated)—Displays the actual outdoor dew point based on the outdoor sensor.
SA10 Economizer Override At—Sets the indoor temperature when the Liebert Air Economizer
™
will be locked out. Even when all other parameters are satisfied, the Liebert Air Economizer will be
locked out when the return air temperature sensor reads this value.
- 2
- TABLE OF CONTENTS 3
- 1.0 INTRODUCTION 11
- 2.1 System Screen 14
- 5Liebert 15
- 2.2 Main Unit Screen 16
- 2.3.2 Accessing Submenus 17
- Display Filtering 19
- 2.3.3 Entering a Password 20
- Figure 14 User menu icons 23
- Table 2 User menu icons 23
- Figure 15 Service menu icons 24
- Table 3 Service menu icons 24
- 3.0 OPERATION 26
- Autorestart 27
- Loss of Power Alarm 27
- Minimum Fan Speed 29
- Operation 30
- Low-Pressure Time Delay 31
- Advanced DX Freeze Protection 31
- Pump Down 32
- High Pressure Alarm 32
- 23 Liebert 33
- Settings 34
- 25 Liebert 35
- 3.2.2 Compressor Control 36
- Compressor Proportional Bands 36
- 27 Liebert 37
- 3.2.3 Chilled Water Control 38
- 29 Liebert 39
- 31 Liebert 41
- Cooling—Free-Cooling 42
- Dual-Cooling Source 42
- DETAIL CDETAIL B 43
- DETAIL D 43
- FRONT VIEW 43
- DETAIL E 44
- 35 Liebert 45
- 3.4 Liebert Air Economizer 46
- Operation 46
- 37 Liebert 47
- 3.4.2 Liebert Air Economizer 48
- System Overview 48
- (Not by 49
- Emerson) 49
- Out of Service 50
- 41 Liebert 51
- 43 Liebert 53
- 3.5.2 SCR Reheat 57
- Tight Mode 57
- 3.6.1 Humidification 59
- Infrared Humidifier 59
- 3.6.2 Dehumidification 60
- Dehumidification Low Limit 60
- . If the proportional 63
- Setting Up PI control 64
- 3.8 Supply Control 66
- 3.9.1 Operation 67
- Temperature Compensation 68
- Racks with Equipment 73
- Figure 59 S190 Limit 75
- Figure 60 S190 Control 75
- 67 Liebert 77
- 3.10.2 User Inputs 80
- and Liebert DS 81
- Air-Cooled Units 81
- 3.10.4 Liebert iCOM-DO 82
- Calculating Unit Wellness 84
- 75 Liebert 85
- 4.0 TEAMWORK 86
- 4.2.2 No Teamwork 87
- 4.2.3 Teamwork Mode 1 87
- 4.2.4 Teamwork Mode 2 88
- Fixed Speed 89
- Variable Speed 89
- Teamwork 90
- 4.2.6 Hardware Setup 91
- 4.3.2 DIP Switch Settings 92
- Unterminated 94
- Terminated 94
- 85 Liebert 95
- Grounded CANbus Cable 97
- 4.3.8 Software Setup 99
- 4.3.9 Standby—Rotation 99
- Standby and Cascade 100
- 91 Liebert 101
- Small Displays 104
- Large Displays 104
- 95 Liebert 105
- Small Graphics Display 106
- Liebert iCOM 107
- I/O Board 107
- Graphics Display 108
- (Rear View) 108
- Optional Large 108
- SITESCAN 110
- 6.1 Terminals 77 and 78 111
- via 77/78 112
- 7.0 USER MENU PARAMETERS 113
- User Menu Parameters 114
- 105 Liebert 115
- 7.2 User-Graphic Menu Screens 116
- Event Log 117
- View Network 117
- 109 Liebert 119
- 111 Liebert 121
- 113 Liebert 123
- Active Alarms 125
- 117 Liebert 127
- 119 Liebert 129
- 121 Liebert 131
- 8.0 SERVICE MENU PARAMETERS 132
- Service Menu Parameters 133
- 123 Liebert 133
- 125 Liebert 135
- 127 Liebert 137
- 129 Liebert 139
- 131 Liebert 141
- 133 Liebert 143
- 135 Liebert 145
- 137 Liebert 147
- 139 Liebert 149
- 141 Liebert 151
- 143 Liebert 153
- 145 Liebert 155
- 147 Liebert 157
- 149 Liebert 159
- Set Alarm Screens, Pages 4-10 160
- 151 Liebert 161
- 153 Liebert 163
- 155 Liebert 165
- 157 Liebert 167
- 159 Liebert 169
- 161 Liebert 171
- 163 Liebert 173
- 165 Liebert 175
- 167 Liebert 177
- 169 Liebert 179
- 171 Liebert 181
- 9.0 MONITORING POINTS 187
- Example of points generated 188
- Monitoring Points 189
- 179 Liebert 189
- Technical Support / Service 192
- Locations 192
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