Technical data

Guide Specifications—For Liebert DataMate 1.5- to 3-Ton (5 to 10.5kW)
37 Liebert
®
DataMate
™
2.5.5 Step-Down Transformer
A step-down transformer shall be provided for [(Indoor Evaporator) (Close-Coupled Water/Glycol
Condensing Unit) (Outdoor Air-Cooled Condensing Unit)] needing 277V input power voltage. The
transformer shall be coated with epoxy and contained in an enclosed, non-ventilated electrical box
with adaptable mounting brackets, suitable for [(indoor) (outdoor)] mounting.
2.5.6 Liebert Local Monitoring Systems, Autochangeover and Leak Detection
Provide indicated quantities of the following:
• ______ Leak Detection System(s) Model __________________________________
• ______ Remote Monitor(s) Model ________________________________________
• ______ Autochangeover Control(s) Model ________________________________
2.5.7 Liebert SiteScan
®
Site Monitoring System
A Liebert SiteScan Site Monitoring System Model __________________ shall be provided for remote
monitoring of the Liebert DataMate unit and monitoring of other Liebert support equipment. The
Liebert SiteScan shall have the capability to monitor and change (at the user direction) the
temperature and humidity setpoints and sensitivities of each unit. The printer shall provide the user
with chronological alarm information. It shall also be capable of being programmed to print out
environmental conditions or operating modes at each unit.
2.5.8 Drycooler
The Liebert drycooler shall be a low-profile, direct-drive propeller fan-type air-cooled unit. The
drycooler shall be constructed with an aluminum cabinet and a copper-tube aluminum fin coil, and
one or more direct drive fans. All electrical connections and controls shall be enclosed in an integral,
NEMA 3R rated electrical panel section of the drycooler. The drycooler shall be quiet and corrosion
resistant.
The drycooler shall be designed for _____°F (°C) ambient.
2.5.9 Glycol Pump Package
The system shall include a centrifugal pump mounted in a weatherproof and vented enclosure. The
pump shall be rated for ____ gpm (l/s) at ____ ft. (kPa) of head, and operate on _____ volt, ____ phase,
______ Hz.
3.0 EXECUTION
3.1 Installation of Air Conditioning Units
3.1.1 General
Install air conditioning units in accordance with manufacturer’s installation instructions. Install unit
plumb and level, firmly anchored in locations indicated and maintain manufacturer's recommended
clearances.
3.1.2 Electrical Wiring
Install and connect electrical devices furnished by manufacturer but not specified to be
factory-mounted. Furnish copy of manufacturer's electrical connection diagram submittal to electrical
contractor.
3.1.3 Piping Connections
Install and connect devices furnished by manufacturer but not specified to be factory-mounted.
Furnish copy of manufacturer's piping connection diagram submittal to piping contractor.
3.1.4 Supply and Drain Water Piping
Connect water supply and drains to air conditioning unit. Provide pitch and trap as manufacturer's
instructions and local codes require.
3.2 Field Quality Control
Startup air conditioning units in accordance with manufacturer's start up instructions. Test controls
and demonstrate compliance with requirements.