Data Sheet for Product

Page 2 of 4 Siemens Building Technologies, Inc.
Document No. 127-0018
Table 1. Large Water Source Heat Pump.
Point Type Description Range/Units
26 LDI Compressor 2 Off/On
27 LAI Compressor 2 Run Hours Number of Hours
28 LAI Compressor 2 Starts Rolls over at 655,360
29 LAO Unoccupied Cooling Temperature Set Point. Water Source Heat
Pump attempts to maintain room temperature by discharging a
constant temperature of air. For cooling, typical discharge
temperature is room temperature minus 20°F. Unit begins cooling
based on room temperature. If unit is in unoccupied time period, set
point attempts to maintain room temperature between unoccupied
set points. If room set point adjustment is active, set points are
adjusted based on value of set point adjustment (Point 07).
0 – 255°F
30 LAO Occupied Cooling Temperature Set Point. Water Source Heat Pump
attempts to maintain room temperature by discharging a constant
temperature of air. Typical discharge temperature is room
temperature minus 20°F. Unit begins cooling based on room
temperature. If unit is in occupied time period, set point attempts to
maintain room temperature between occupied set points. If room set
point adjustment is active, set points are adjusted based on value of
set point adjustment (Point 07).
0 – 255°F
31 LAO Unoccupied Heating Temperature Set Point. Water Source Heat
Pump attempts to maintain room temperature by discharging a
constant temperature of air. Typical discharge temperature is room
temperature plus 30°F. Unit begins heating based on room
temperature. During an unoccupied time period, set point attempts to
maintain room temperature between unoccupied room set points. If
room set point adjustment is active, set points are adjusted based on
value of set point adjustment (Point 07).
0 – 255°F
32 LAO Occupied Heating Temperature Set Point. Water Source Heat Pump
attempts to maintain room temperature by discharging a constant
temperature of air. Typical discharge temperature is room
temperature plus 30°F. Unit begins heating based on room
temperature. If unit is in occupied time period, set point attempts to
maintain room temperature between occupied set points. If room set
point adjustment is active, set points are adjusted based on value of
set point adjustment (Point 07).
0 – 255°F
33 LAO Room Temperature Low Warning Set Point. If room temperature is
too cold, Water Source Heat Pump sends warning to open processor
through this point. Set points control temperatures which activate this
alarm.
0 – 255°F
34 LAO Room Temperature High Warning Set Point. If room temperature is
too hot, Water Source Heat Pump sends warning to open processor
through this point. Set points control temperatures which activate this
alarm.
0 – 255°F
35 LDO Clear Fault. To clear an active fault in unit, set this point to on. After
clearing alarm, program sets point back to off.
Off/On
36 LAO Auto/Manual Set Point See Table 4
37 LAO System Command See Table 5
continued on next page…