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Site Preparation and Installation
2.8.2
Hot Water Reheat Coil
Building hot water can be piped to a factory-installed hot water reheat coil, located downstream of the cooling coil. A factory-installed solenoid valve opens upon a call for reheat.
Figure 15 Optional hot water reheat (2-way valve)
Bleed Valve
Water
Return
From Unit
Water
Supply
To Unit
Shutoff
Valves *
Hose
Bibs *
Hot Water
Reheat
Control
Valve
Female
Adapters
Y-Strainer
Hot Water
Reheat
Coil
* Components are not supplied by Liebert, but are recommended for proper circuit operation and maintenance.
FIELD PIPING
FACTORY PIPING
DPN000219_Rev0
25
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Table of contents
- 11 Product Description and Features
- 11 Controls
- 11 Evaporator System Components
- 11 Condensing Unit Components
- 11 Optional Equipment
- 11 Canister Humidifier
- 11 Electric Reheat
- 12 SCR Electric Reheat
- 12 Hot Water Reheat
- 12 Hot Gas Bypass (Condensing Units)
- 12 Free-Cooling Coil
- 12 Smoke Detector
- 12 Firestat
- 12 Filter Clog
- 12 Ancillary (Ship Loose Accessories)
- 12 Single Point Power Kit
- 12 Refrigerant Line Sweat Adapter Kit
- 12 Return Air Filter Box with Duct Collar Kit
- 12 Condensate Pump Kit
- 12 Remote Monitoring and Control
- 12 Remote Sensors
- 13 Installation Considerations
- 13 Room Preparation
- 14 Location Considerations
- 15 System Weights
- 15 Equipment Inspection Upon Receipt
- 16 Installing the Ceiling Units
- 16 Close Coupled Installations
- 16 Evaporator Air Distribution
- 17 Piping Connections and Coolant Requirements
- 22 Electrical Connections
- 25 Indoor Air Cooled Centrifugal Fan Condensing Unit Installation
- 25 Location Considerations
- 25 Electrical Connections
- 25 Piping Connections
- 25 Ducting
- 28 Outdoor Air Cooled Condensing Unit Installation
- 28 Location Considerations
- 29 Piping Connections
- 29 Electrical Connections
- 29 Indoor Water and Glycol Cooled Condensing Unit Installation
- 29 Location Considerations
- 29 Electrical Connections
- 30 Piping Connections
- 34 Optional Equipment Piping
- 34 Free-Cooling Coil
- 35 Hot Water Reheat Coil
- 36 Checklist for Completed Installation
- 37 Feature Overview
- 38 Main Menu
- 38 Setpoints
- 39 Status
- 39 Active Alarms
- 40 Setback
- 40 Setup Operation
- 40 Restart Time Delay
- 40 C/F Degrees
- 41 Humidity Control Method
- 41 Show DIP switch
- 41 Valve Time (for Systems With a Modulating Chilled Water Valve)
- 41 CW Flush (for systems with a modulating chilled water valve)
- 42 Change Passwords
- 42 Calibrate Sensors
- 42 Alarm Enable
- 42 Alarm Time Delay
- 43 Common Alarm Enable
- 43 Custom Alarms
- 43 Custom Text
- 44 Run Diagnostics (Available On Rev 1.001.0 and higher)
- 48 Temperature Control
- 48 Cooling/Heating Required
- 48 Cooling Operation (Compressorized Direct Expansion and Chilled Water)
- 48 Heating Operation
- 48 Humidity Control
- 48 Dehumidification/Humidification Required
- 48 Dehumidification Operation, Compressorized Direct Expansion (DX) Systems
- 49 Humidification Operation
- 49 Load Control Features
- 49 Communications
- 50 Alarms: Definitions and Troubleshooting
- 50 Custom Alarms
- 50 High Head Pressure
- 51 Humidity Level
- 51 Temperature
- 51 Humidifier Problem Alarm
- 51 High Water Alarm
- 51 Loss of Power
- 51 Short Cycle
- 52 Optional/Custom Alarms
- 52 Change Filter
- 52 Firestat
- 52 Smoke Detector
- 53 System Testing
- 53 Environmental Control Functions
- 53 Cooling
- 53 Heating
- 53 Humidification
- 53 Dehumidification
- 53 Remote Shutdown
- 53 Maintenance and Component Operation
- 53 Electric Panel
- 53 Filters
- 54 Blower System
- 54 Blower Removal
- 54 Refrigeration System
- 58 Steam Generating Humidifier-Operation Procedures
- 60 Circuit Board Adjustments