Technical data

Guide Specifications—For Liebert DataMate 1.5- to 3-Ton (5 to 10.5kW)
Liebert
®
DataMate
™
36
2.3 Indoor Remote Water/Glycol-Cooled Condensing Unit
The water/glycol condensing unit shall include a scroll compressor, high-pressure switch, coaxial
condenser, water-regulating valve, hot gas bypass system and liquid line solenoid valve. A hot gas
bypass circuit shall be provided to reduce compressor cycling and improve operation under low-load
conditions. All components shall be factory-assembled, charged with R-407C refrigerant and sealed.
No internal piping, brazing dehydration or charging shall be required. Units available for [(2-ton)(3-
ton)] systems.
The water/glycol condensing unit shall be equipped with a coaxial condenser having a total system
pressure drop of ______ ft. of water (kPa) and a flow rate of ______ GPM (l/s) with ______ °F (°C)
entering water/glycol temperature.
The condenser circuit shall be pre-piped with a [(2-way) (3-way)] regulating valve that is
head-pressure actuated.
The condenser water/glycol circuit shall be designed for a static operating pressure of [(150psi
(1034kPa)) (350 PSI (2413 kPa))].
2.4 Factory-Installed Options
2.4.1 Electric Reheat
The electric reheat shall be low-watt density, tubular element and shall include agency approved
safety switch to protect the system from overheating. The capacity of the reheat coil shall be
______ BTU/HR, ____ kW, controlled in 1 stage.
2.4.2 Steam Generating Humidifier
The environmental control system shall be equipped with a steam generating humidifier that is
controlled by the microprocessor control system. It shall be complete with disposable canister, all
supply and drain valves, 1" (25.4mm) air gap on fill line, inlet strainer, steam distributor and
electronic controls. The need to change the canister shall be annunciated on the microprocessor
wall box control panel. The humidifier shall have a capacity of 3 lb./hr. (1.4kg/h). An LED light on the
humidifier assembly shall indicate cylinder full, overcurrent detection, fill system fault and end of
cylinder life conditions.
2.5 Ship-Loose Accessories
2.5.1 Remote Sensors
The unit shall be supplied with remote temperature and humidity sensors. The sensors shall be
connected to the unit by a 30 ft. (9m) shielded cable.
2.5.2 Condensate Pump
The condensate pump shall have the capacity of _____ GPH (___ l/h) at ___ ft. head (___ kPa). It shall
be complete with integral float switch, discharge check valve, pump, motor assembly and reservoir. A
secondary float switch shall be provided to permit field wiring to the unit control to shut down the
evaporator upon a high water level condition.
2.5.3 Refrigerant Line Sets
Pre-charged refrigerant line sets shall be provided by Emerson
®
in proper lengths for application.
Line set length shall be (15 ft. [4.5m]) (30 ft. [9m]) not to exceed 45ft. (13.5m) in total length.
2.5.4 Refrigerant Line Sweat Adapter Kit
Provide a sweat adapter kit to permit field brazing of refrigerant line connections for application to
split systems.