2.02OPTIONAL COMPONENTS
A.FLOORSTAND
1.The heavy gauge floor stand shall raise the unit above the subfloor to match the height of the raised floor. Heights are available from 254 mm (10 in) to 610 mm (24 in) with 76 mm (3 in) increments and shall be adjustable +/- 1.5 in. Adjustment is provided by threaded pedestals.
2.Seismic floorstands shall be available in 305 mm (12 in), 457 mm (18 in), and 610 mm (24 in) heights for areas where earthquakes are a concern.
B.PLENUM
1.Upflow discharge plenums (60 Hz only) shall mount on top of an upflow cooling unit to direct and distribute conditioned air. The plenum shall be manually adjustable and provided with double deflecting grilles. Plenums are a fixed height of 500 mm (19.6 in).
2.Downflow discharge base plenums (50 Hz and 60 Hz) shall sit beneath the downflow cooling unit to direct conditioned air from front openings. Models available include dampers, grills, or flexible duct connections. Plenums are a fixed height of 450 mm (17.7 in).
C.SMOKE DETECTOR
1.A smoke detector shall be
D.SPOT WATER DETECTOR (50Hz and 60Hz)
1.The spot water detector shall sense water and send an alarm signal to the display interface to broadcast an alarm and shutdown the cooling unit. The water detector shall ship loose for field installation.
2.The water detector shall be provided with 5 m (15 ft) of wire.
E.CABLE WATER DETECTOR (60Hz only)
1.A leak detection sensing cable shall be shipped loose with the unit. If water or other conductive liquids contact the cable anywhere along its length, the main controller visually and audibly annunciates the leak.
2.The detector shall be provided with 6 m (20 ft) of cable.
F.FLOW SWITCH
1.A single pole, double throw, flow switch shall moderate fluid flow when it exceeds or drops below the set flow rate. The flow switch shall ship loose for field installation.
G.HOT GAS BYPASS VALVE
1.The 60 Hz cooling unit shall contain a spring loaded, thermally driven hot gas bypass valve (HGBV). Activation of the HGBV shall maintain the evaporator coil temperature during low load conditions to prevent condensate from freezing on the surface of the evaporator coil and to protect the compressor from excessive cycling.
2.The 50 Hz cooling unit shall contain an electronically controlled HGBV, which is controlled by a
InRoom Precision AC Tech Data Manual | 79 |