Data Sheet for Product

Page 2 of 6 Siemens Building Technologies, Inc.
Document No. 127-0020
Table 1. Microtech 2000 Water Source Heat Pump.
Point Type Description Range/Units
19 LAO Occupied Cooling Room 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 10).
0 – 255°F
20 LAO Unoccupied Heating Room 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 10).
0 – 255°F
21 LAO Occupied Heating Room 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 10).
0 – 255°F
22 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
23 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
24 LAO Filter Hours Hours
25 LAO Max Filter Hours Hours
26 LDO Clear Fault No/Yes
27 LAO Auto/Manual Set Point See Table 5
28 LAO System Command See Table 6
29 LAO Occupied/Unoccupied Set Point 0 = Occupied
255 = Unoccupied
30 LAO Auxiliary Output Set Point De-energized
Energized
99 LDI Device Communication Failure Normal/Failed