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Liebert
50 & 60Hz, 8 Tons user manual
Models:
50 & 60Hz
8 Tons
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Troubleshooting
Install
Refrigerant piping diagram
Replacement Procedures
Dimension
Maintenance
System configurations-aircooled systems
5.1.5Humidifier Problem Alarm
3.18Run Diagnostics
3.10Setup Operation
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Contents
For Business-CriticalContinuity
Liebert Mini-Mate2
UserManual -8 Tons,50& 60Hz
Precision Cooling
Page
TABLE OF CONTENTS
3.0 MICROPROCESSOR CONTROL
5.0 ALARMS
TABLES
FIGURES
Table iv Heat rejection matchup - 50 Hz
MODEL NUMBER NOMENCLATURE
Table iii Heat rejection matchup - 60 Hz
Page
1.1.3Condensing Unit Components
1.0PRODUCT FEATURES
1.1.1Controls
Chilled-WaterModel
1.2.4Hot Gas Bypass Condensing Units
1.2.1Canister Humidifier
1.2.2Electric Reheat
1.2.3SCR Electric Reheat
1.3.4Condensate Pump Kit
1.3.1Single Point Power Kit
1.3.2Refrigerant Line Sweat Adapter Kits
1.3.3Return Air Filter Box with Duct Collar Kit
2.1.1Room Preparation
2.1Installation Considerations
2.0SITE PREPARATION AND INSTALLATION
2.1.2Location Considerations
Site Preparation and Installation
Evaporator
Figure 1 System configurations-aircooled systems
Site Preparation and Installation
Evaporator
Evaporator
2.2System Weights
Unit weights
2.3Equipment Inspection upon receipt
2. Use the Nylock nuts to “jam” the plain nuts
Figure 5 Close coupled installation
2.4.1Close Coupled Installations
Connections for Ducted Systems
Site Preparation and Installation
2.4.2Evaporator Air Distribution Filter Box
Site Preparation and Installation
Figure 6 Drain installation
AIR INLET
Figure 7 Condensate pump installation
Condensate Pump
Humidifier Water Supply Line
DPN000236 Rev0
Chilled-Water Piping-Chilled-waterSystems Only
Recommended refrigerant line sizes
Figure 9 Refrigerant piping diagram
Refrigerant R-22Piping
Line charges field piping
Total refrigerant = Units and Lines
Quick Connect Fittings
Table 7 8-tonunit refrigerant charge
FRONT OF UNIT
OPTIONAL FILTER BOX
DPN000240 Rev0
Power Connections
Evaporator unit electrical connections
Site Preparation and Installation
General Considerations
Site Preparation and Installation
2.5.1Location Considerations
2.5.2Ducting
2.5.4Electrical Connections - Condensing Unit
Power Connections
Site Preparation and Installation
2.5.3Piping Connections
DPN000248 Rev1
Heat rejection connection.Field
Site Preparation and Installation
2.6.3Electrical Connections
Power Connections
2.6.1Location Considerations
2.6.2Piping Connections
Low voltage
Electric service connection
DPN000135 Rev0
High voltage
DPN000131 Rev0
FOOTPRINT DIMENSIONS
Site Preparation and Installation
SL-11081Page7
Site Preparation and Installation
Condensing Unit Fluid Requirements
2.7.1Location Considerations
2.7.2Piping Connections
Water/Glycol Piping Considerations
Site Preparation and Installation
Site Preparation and Installation
SL-11088Pg7
Site Preparation and Installation
Two circuits provided. Single circuit shown
2.8.1Free-CoolingCoil GLYCOOL
2.8Optional Equipment Piping
Site Preparation and Installation
2.9Checklist for Completed Installation
Figure 23 Wall box
3.1Feature Overview
3.0MICROPROCESSOR CONTROL
3.2Main Menu Menu
3.3Setpoints
3.5Active Alarms
3.6Alarm History
Table 10 Default setpoints and allowable ranges
3.8Date
3.10Setup Operation
3.10.1Restart Time Delay
3.7Time
3.10.4Lead Compressor
3.10.5Show DIP Switch
3.10.2C/F Degrees
3.10.3Humidity Control Method
3.12Calibrate Sensors
3.11Change Passwords
3.13Alarm Enable
Table 13 Alarm default time delays
3.14Alarm Time Delay
3.15Common Alarm Enable
3.16Custom Alarms
LCD Display Contrast
Equipment Options Switches
Table 15 Switch settings wallbox board
3.17Custom Text
Fan turned on with all loads
3.18Run Diagnostics
Test Outputs
Test Inputs
Microprocessor Control
Test Micro
Figure 24 Control menu
Page
4.3.1Electric Reheat - Staged
4.0SYSTEM PERFORMANCE MICROPROCESSOR CONTROLS
4.2.2Chilled-WaterCooling 8 Ton
4.2.3GLYCOOL Cooling 8 Ton
4.4.3Dehumidification Lockout
4.5Load Control Features
4.6Communications
4.4.2Humidification Operation System Activation
Air-CooledSystems
5.0ALARMS
5.1.1Custom Alarms
5.1.2High Head Pressure
5.1.7Loss of Power
5.1.4Temperature
5.1.5Humidifier Problem Alarm
5.1.6High-WaterAlarm
5.2.3Smoke Detector
5.2Optional/Custom Alarms
5.2.1Change Filter
5.2.2Firestat
6.1.3Heating
6.0SYSTEM OPERATION, TESTING, AND MAINTENANCE
6.1.1Environmental Control Functions
6.1.2Cooling
Air Distribution
6.2.1Electric Panel
6.2.2Filters
6.2.3Blower System
Discharge Pressure
6.2.4Electric Reheat
6.2.5Refrigeration System
Suction Pressure
Hot Gas Bypass Optional
Glycol Solution Maintenance
Adjustment
Regulating Valves Water/Glycol Condensing Units
Replacement Procedures
System Operation, Testing, and Maintenance
Replacing the Humidifier Canister
6.2.7Circuit Board Adjustments
REHEAT
7.0MAINTENANCE INSPECTION CHECKLIST
FILTERS
BLOWER SECTION
Troubleshooting
8.0TROUBLESHOOTING
Table 18 Troubleshooting
Troubleshooting
Table 18 Troubleshooting continued
Troubleshooting
Troubleshooting
Troubleshooting
Page
from
Ensuring The High Availability
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