Data Sheet for Product

ManualsBrandsSiemens Manuals3rd party integrationMicrotech 2000 Water Source Heat Pump, Point Map

Point Map

Rev. 3, February, 2002

Siemens Building Technologies, Inc. Page 1 of 8

Document No. 127-0023

Systems Integration

APOGEE

Open Processor with McQuay Microtech

Driver: European Reciprocating Chiller (CR2)

Table 1. European Reciprocating Chiller (CR2).

Point Type Description Range/Units

01 LAO Device Address —

02 LAO Application Number 5007

03 LAI Unit Status See Table 2

04 LAI Circuit 1 Status See Table 3

05 LAI Circuit 2 Status See Table 3

06 LAI Stage Of Cooling. Normal mode for chiller while cooling. Point

displays number of currently active cooling stages which only

indicate system capacity and not which compressors or circuits are

on.

1 – 8

07 LAI Leaving Evaporator Water Temperature

-40 – 263°F

08 LAI Entering Evaporator Water Temperature

-40 – 263°F

09 LAI Leaving Condenser Water Temperature

-40 – 263°F

10 LAI Entering Condenser Water Temperature or Outside Air Temperature

-40 – 263°F

11 LAI Circuit 1 Suction Temperature

-40 – 263°F

12 LAI Circuit 2 Suction Temperature

-40 – 263°F

13 LAI Circuit 1 Liquid Line Temperature

-40 – 263°F

14 LAI Circuit 2 Liquid Line Temperature

-40 – 263°F

15 LAI Circuit 1 Superheat. Suction temperature minus evaporator

temperature.

°F

16 LAI Circuit 2 Superheat. Suction temperature minus evaporator

temperature.

°F

17 LAI Circuit 1 Condenser Approach Temperature. Condenser refrigerant

temperature minus leaving condenser refrigerant temperature.

°F

18 LAI Circuit 2 Condenser Approach Temperature. Condenser refrigerant

temperature minus leaving condenser refrigerant temperature.

°F

19 LAI Circuit 1 Subcooling. Leaving condenser water temperature minus

liquid line temperature.

°F

continued on next page...

Summary of content (8 pages)

PAGE 1
Point Map Rev. 3, February, 2002 Systems Integration APOGEE¥ Open Processor with McQuay Microtech Driver: European Reciprocating Chiller (CR2) Table 1. European Reciprocating Chiller (CR2). Point Type Description Range/Units 01 LAO Device Address — 02 LAO Application Number 5007 03 LAI Unit Status See Table 2 04 LAI Circuit 1 Status See Table 3 05 LAI Circuit 2 Status See Table 3 06 LAI Stage Of Cooling. Normal mode for chiller while cooling.
PAGE 2
Table 1. European Reciprocating Chiller (CR2). Point Type 20 LAI Circuit 2 Subcooling. Leaving condenser water temperature minus liquid line temperature.
PAGE 3
Table 1. European Reciprocating Chiller (CR2). Point Type Description Range/Units 52 LAO Network Demand Limit. A maximum number of cooling stages which can be achieved using this point. For example, if there are eight possible stages, 50% of the network demand limit is four stages. This is vital for systems which seek to reduce chiller capacity at certain times to avoid peak electrical demand charges.
PAGE 4
Table 3. Circuit Status (Points 04 and 05).
PAGE 5
Table 4. Alarms (Points 34 through 37). Description for CR2-M1xx Value Description for CR2-M2xx 0 None. Also, set point to this value to clear alarms.
PAGE 6
Table 4. Alarms (Points 34 through 37).
PAGE 7
Table 4. Alarms (Points 34 through 37). Description for CR2-M1xx Value Description for CR2-M2xx 152  Chilled Water Freeze Protect (Active) 153  Bad Voltage Ratio Sensor (Active) 154  Bad Evaporator Leaving Temperature Sensor (Active) Siemens Building Technologies, Inc. Document No.
PAGE 8
Table 5. Reset Option (Point 48). Value Description 0 No Chilled Water Reset 1 Return Chilled Water Reset. Constant Return Chilled Water Temperature Set Point maintained. 2 4 – 20 mA Chilled Water Reset. Resets Chilled Water Set Point based on 4 – 20 mA signal. A signal less than 4 mA results in no reset of Chilled Water Temperature Set Point.