Data Sheet for Product

Page 2 of 6 Siemens Building Technologies, Inc.
Document No. 127-0015
Table 1. Loop Water Controller.
Point Type Description Range/Units
21 LAI Secondary Pump 1 Status 0 = Off
255 = On
22 LAI Secondary Pump 2 Status 0 = Off
255 = On
23 LAI Mode See Table 3
24 LAI Current Fault See Table 4
25 LAI Previous Fault See Table 5
26 LAO Heat Stage 11 On Set Point
40 – 69°F
27 LAO Heat Stage 12 On Set Point
40 – 69°F
28 LAO Heat Stage 11 On Set Point Differential
1 – 9°F
29 LAO Heat Stage 12 On Set Point Differential
1 – 9°F
30 LAO Cool Stage 11 On Set Point
70 – 110°F
31 LAO Cool Stage 12 On Set Point
70 – 110°F
32 LAO Cool Stage 11 On Set Point Differential
1 – 9°F
33 LAO Cool Stage 12 On Set Point Differential
1 – 9°F
36 LAI Loop Pump 1 Operating Hours Rolls over at 50,000
37 LAI Loop Pump 2 Operating Hours Rolls over at 50,000
38 LAI Tower Pump 1 Operating Hours Rolls over at 50,000
39 LAI Tower Pump 2 Operating Hours Rolls over at 50,000
40 LAI Boiler Pump 1 Operating Hours Rolls over at 50,000
41 LAI Boiler Pump 2 Operating Hours Rolls over at 50,000
42 LAO Day of Week 1=Sunday, 7=Saturday
43 LAO Month 1 – 12
44 LAO Day of Month 1 – 31
45 LAO Year 0 – 99
46 LAO Hour 0 – 23
47 LAO Minute 0 – 59
48 LDO Clear Fault (Alarm) No/Yes
49 LDO Start/Stop Method. Controls whether the LWC uses network control
or internal time schedules to start/stop.
Based on Local Programming
Based on Loop Request Value
(Point 50)
50 LAO Loop Request. Normally Enabled. The start/stop method point value
must be 1 for loop request to control properly. If current unit status of
LWC is off: ready and Loop Request is set to 1, LWC starts. If LWC
and Loop Request are off, LWC shuts down. Information obtained
from WSHPS determines need for loop flow.
0 = Request not Received
1 = On
2 = Off
continued on next page...