Data Sheet for Product

Siemens Building Technologies, Inc. Page 7 of 8
Document No. 127-0025
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 4mA
results in no reset of Chilled Water Temperature Set Point.
A signal greater than 4 mA results in a linear reset
between Chilled Water Set Point and the maximum Chilled
Water Reset Set Point plus the chilled water.
3 Network Chilled Water Reset. Resets Chilled Water Set
Point based on the network evaporator leaving
temperature reset. A signal of 0 – 100% results in a linear
reset between the Chilled Water Set Point and the
Maximum Chilled Water Reset Set Point plus the Chilled
Water Set Point.
4 Ice Chilled Water Reset. Resets the Chilled Water Set
Point (typically 23°F) based upon a 4 – 20 mA signal. A
signal less than 4 mA results in no reset of Chilled Water
Temperature Set Point. A signal greater than 4 mA results
in a Chilled Water Set Point equal to the set point plus the
Maximum Chilled Water Reset Set Point (typically 22°F).