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Figure 2A General piping arrangement—8- and 10-ton air cooled models Installation...
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Figure 2B Cabinet and floor planning dimensional data—8- and 10-ton air cooled models Table 5A Dimensional data, 8- and 10-ton air cooled Dimensional Data Module Weight Net. Model Numbers in. (mm) Ibs.(kg) 60 HZ 50 HZ PF096A PS095A 39-1/4 38-1/2 5-1/2 (1956) (997)
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Figure 2C Electrical field connections—8- and 10-ton air cooled models Installation...
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Figure 2D Cabinet and floor planning dimensional data, 8- and 10-ton air cooled with thermal storage tank cabinet 30" Table 5B Dimensional Data, 8-10 ton air-cooled models with thermal storage tank cabinet Model Numbers 60 Hz PS096A 39-1/4 (1956) (997) PS120A * Note: Add weight of fluid for operating weight Dimensional Data...
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.0 8- ROCESS 4A.1 Product Description The 8- and 10-ton process chiller is a self-contained air cooled system, containing two (2) scroll compressors and two (2) heat exchangers. An optional 2 HP multistage stainless steel pump may be included (see model number) to overcome the high pressure drop found in some MRI and CT systems.
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4A.2 Temperature Control for 8- and 10-Ton Process Chiller Liebert 8- and 10-ton process chillers include a Sporlan Electronic Hot Gas Bypass Valve and con- troller. This control provides a precise method of capacity control by bypassing hot gas to the evaporator inlet.
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Figure 3D Electronic hot gas bypass control board connections The sensor, 24 VAC power, and the electronic valve are factory-wired to the control board. Jump- ers are factory-set to the following pins: P7—Temperature sensor enable selector P9—“Close on rise” logic selector P12—Valve selector In addition a jumper can be field installed on the following pins to troubleshoot operation of the valve:...
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4A.3 Temperature Setpoint for Chiller The temperature setpoint for the chiller should be set by turning the potentiometer. To obtain an accurate setpoint, connect a voltmeter (millivolt) to TP1 and TP2. The readout will display tem- perature in degrees Fahrenheit. Turn the potentiometer to the desired setpoint. A “well”...