Data Sheet for Product

Page 2 of 8 Siemens Building Technologies, Inc.
Document No. 127-0025
Table 1. Reciprocating Chiller Controller (US).
Point Type Description Range/Units
20 LAI Circuit 2 Subcooling. Leaving condenser water temperature minus
liquid line temperature.
°F
21 LAI Evaporator 1 Pressure 5 – 145 psi
22 LAI Evaporator 2 Pressure 5 – 145 psi
23 LAI Condenser 1 Pressure 20 – 450 psi
24 LAI Condenser 2 Pressure 20 – 450 psi
25 LAI % Motor Current 0 – 100%
26 LAI Compressor 1 Operating Hours —
27 LAI Compressor 2 Operating Hours —
28 LAI Compressor 3 Operating Hours —
29 LAI Compressor 4 Operating Hours —
30 LAI Compressor 1 Starts —
31 LAI Compressor 2 Starts —
32 LAI Compressor 3 Starts —
33 LAI Compressor 4 Starts —
34 LAI Circuit 1 Alarm See Table 4
35 LAI Circuit 2 Alarm See Table 4
36 LAI Circuit 1 Previous Alarm See Table 4
37 LAI Circuit 2 Previous Alarm See Table 4
38 LAI Current Alarm Circuit 1 Evaporator Pressure PSI
39 LAI Current Alarm Circuit 1 Condenser Pressure 280 – 425 psi
40 LAI Current Alarm Circuit 1 Suction Temperature
°F
41 LAI Current Alarm Circuit 1 Liquid Line Temperature
°F
42 LAI Current Alarm Circuit 2 Evaporator Pressure PSI
43 LAI Current Alarm Circuit 2 Condenser Pressure 280 – 425 psi
44 LAI Current Alarm Circuit 2 Suction Temperature —
45 LAI Current Alarm Circuit 2 Liquid Line Temperature —
46 LDO Network Command Enable/Disable Chiller
47 LAO Evaporator Leaving Water Temperature Set Point
10 – 80°F
48 LAO Reset Option Set Point See Table 5
49 LAO Maximum Chilled Water Reset Set Point
0 – 10°F
50 LAO Entering Evaporator Temperature Set Point
15 – 80°F
51 LAO Network Evaporator Leaving Temperature Reset 0 – 100%
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