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User Menu Parameters
103 Liebert
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iCOM
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Figure 86 Setpoints screen, page 2
U113 2nd Temperature Setpoint—Provides a way to program an alternate temperature setpoint
that is activated by a dry contact through the customer inputs connections. When a customer input
connection is set to “2nd Setpoint” and the input is wired to that input is active, then the value set in
this parameter sets the active temperature setpoint. This parameter is adjustable from 41°F to 81°F
(5 to 27.2°C). The factory default is 41°F (5°C).
This temperature may affect fan speed if the control is setup to operate in a coupled mode during
normal operation (see Table 4).
U114 Supply Temp Limit Setpoint—Selects the minimum discharge air temperature. When the
actual sensor reading approaches this parameter, the cooling capacity will be limited to avoid going
below the Supply Limit Temperature value. This parameter must be enabled in the Service /
Setpoints menu prior to setting a supply limit setpoint. This parameter is adjustable from 41°F to
81°F (5 to 27.2°C). The factory default is 41°F (5°C)
U116 BMS Backup Temp Setpoint—Selects a temperature setpoint that will be active in the event
of a BMS time-out. The BMS timer must be configured for this parameter to activate. If the unit is
operating in “Coupled” mode, located in Service Menus>Setpoint, S163, then this setpoint will affect
the fan control setpoint. This temperature may affect fan speed if the control is setup to operate in a
coupled mode during normal operation (see Table 4). This parameter is adjustable from 41-104°F
(5-40°C). The factory default is 73°F (23°C).
U117 BMS Backup Fan Setpoint—Selects a temperature setpoint that will be active in the event of
a BMS time-out. The BMS timer and S163 must be configured to “Backup Set” for this parameter to
activate. This parameter is adjustable from 41-104°F (5-40°C). The factory default is 73°F (23°C).
U117 BMS Backup Fanspeed—Selects a fixed fan speed percentage that will be active in the event
of a BMS time-out. The BMS timer and S163 must be configured to “BMS Backup Spd” for this
parameter to be visible. This parameter is adjustable based units preconfigured low and high limit
fan speed thresholds. The factory default is 100%.
U119 Return Compensation Setpoint—Allows the return air sensor to be used even when in
Supply or Remote temperature control mode. Return Compensation modifies the temperature
setpoint to ensure that the return air temperature is kept above a specific temperature. If the return
compensation value is set to 80°F and the actual return temp falls to 75°F, then the controlling
temperature setpoint will be increased and will reflect in the Control Temp Act.” This parameter is
adjustable from 41-104°F (5-40°C). The factory default is 73°F (23°C).
- 2
- TABLE OF CONTENTS 3
- 1.0 INTRODUCTION 11
- 2.2 System Screen 16
- USER MENUS 20
- 2.5 Display Setup 22
- Figure 16 User menu icons 24
- Table 2 User menu icons 24
- Figure 17 Service menu icons 26
- Table 3 Service menu icons 26
- 3.0 OPERATION 28
- Autorestart 29
- Loss of Power Alarm 29
- Minimum Fan Speed 31
- Operation 32
- 3.1.4 Power Monitoring 33
- Low-Pressure Time Delay 33
- Advanced DX Freeze Protection 33
- Pump Down 34
- High-Pressure Alarm 34
- 25 Liebert 35
- Settings 37
- 3.3 Temperature Control 39
- 3.3.1 Setting Up PI Control 41
- 3.3.2 Compressor Control 42
- Compressor Proportional Bands 42
- 3.4 Liebert Fluid Economizer 45
- Cooling—Free-Cooling 47
- Dual-Cooling Source 48
- 3.4.2 Liebert Air Economizer 48
- DETAIL CDETAIL B 49
- DETAIL D 49
- FRONT VIEW 49
- Both possible low-voltage 50
- Determine which applies 50
- 3.5 Liebert Air Economizer 51
- Operation 51
- System Overview 52
- 3.5.1 Liebert Air Economizer 52
- (Not by 53
- Emerson) 53
- Not in Operation 54
- Startup Configurations 54
- 45 Liebert 55
- 47 Liebert 57
- 3.6.2 SCR Reheat 60
- Tight Mode 60
- 3.7 Humidity Control 61
- 53 Liebert 63
- 3.7.1 Humidification 64
- Infrared Humidifier 64
- 3.7.2 Dehumidification 64
- Dehumidification Low Limit 65
- 57 Liebert 67
- 3.8 Supply Control 68
- 59 Liebert 69
- 3.9.1 Operation 70
- Temperature Compensation 70
- Racks with Equipment 75
- Figure 60 S190 Limit 77
- Figure 61 S190 Control 77
- 3.10.2 User Inputs 81
- 3.10.3 Analog Inputs 82
- 3.10.4 Liebert iCOM-DO 83
- Calculating Unit Wellness 85
- 4.0 TEAMWORK 87
- 4.2.2 No Teamwork 88
- 4.2.3 Teamwork Mode 1 88
- 4.2.4 Teamwork Mode 2 89
- Fixed Speed 90
- Variable Speed 90
- Teamwork 91
- 81 Liebert 91
- Figure 66 Remote sensors 92
- Figure 67 Sensor positioning 92
- 4.2.6 Hardware Setup 93
- 4.3.2 DIP Switch Settings 94
- Unterminated 96
- Terminated 96
- 87 Liebert 97
- 4.3.7 Software Setup 99
- 4.3.8 Standby—Rotation 99
- Standby and Cascade 100
- 91 Liebert 101
- Small Displays 103
- Small Graphics Display 105
- Liebert iCOM 106
- I/O Board 106
- Optional Large 107
- Graphics Display 107
- (Rear View) 107
- Liebert vNSA 108
- SITESCAN 109
- 6.2 Monitoring Points 110
- 7.0 USER MENU PARAMETERS 111
- User Menu Parameters 112
- 103 Liebert 113
- 7.2 User-Graphic Menu Screens 114
- Event Log 115
- View Network 115
- 107 Liebert 117
- 109 Liebert 119
- 111 Liebert 121
- 113 Liebert 123
- Active Alarms 124
- 115 Liebert 125
- 117 Liebert 127
- 119 Liebert 129
- 8.0 SERVICE MENU PARAMETERS 131
- Service Menu Parameters 132
- 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 4-11 160
- 151 Liebert 161
- 153 Liebert 163
- 155 Liebert 165
- 157 Liebert 167
- Freecool Sensor 168
- 159 Liebert 169
- 161 Liebert 171
- 163 Liebert 173
- 165 Liebert 175
- 167 Liebert 177
- 169 Liebert 179
- 171 Liebert 181
- 173 Liebert 183
- 175 Liebert 185
- 181 Liebert 191
- (read only) 193
- Technical Support / Service 196
- Locations 196
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