Siemens 125-1957 - Manual (Page 11)

Siemens Building Technologies, Inc. 1
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Product Overview
Introduction
The Unit Vent Controller—0 to 10V Output is the Siemens Building Technologies, Inc.
Terminal Equipment Controller (TEC) used in unit ventilator applications. See Figure 1. It
provides Direct Digital Control (DDC) for five applications. The controller can operate as an
independent, stand-alone, DDC room controller or be networked with an APOGEE field
panel.
The controller provides all termination, input/output, system and local communication
connections. See Figure 1. The controller hardware consists of the controller with cover and
mounting bracket.
Table 1. Unit Vent Controller – 0 to 10 V Output Applications.
Standard Applications
2281 Heating and/or Chilled Water Cooling, ASHRAE Cycles l and II
2283 Heating and/or Chilled Water Cooling, ASHRAE Cycle III
2284 Heating and DX Cooling, ASHRAE Cycles I and II
2286 Heating and DX Cooling, ASHRAE Cycle III
2287 Nesbitt Cycle W
2299Slave Mode (no control; available for set up, and point extension device)
Ordering Notes
Unit Vent Controller – 0 to 10 Volt Output 540-509