Operating Instructions

Chapter 1 – Product Overview
Hardware Inputs
7
Siemens Industry, Inc.
Owner's Manual
125-5111
2015-06-30
Hardware Inputs
Analog
Air velocity sensor (one or two depending on setup)
Application 2931
Room temperature sensor
Application 2931
Discharge temperature sensor (10K
(default) or 100K Ω software selectable thermistor)
Application 2931
Differential pressure sensor (0-10 Vdc
or 4-20 mA)
Application 2931
Digital
Occupancy button (option on room temperature sensor)
Application 2931
(Optional) Occupancy switch
Application 2931
(Optional) Alarm switch
Application 2931
Hardware Outputs
Analog
Reheat valve (default)
Application 2931
Supply damper (default)
Application 2931
Exhaust damper (default)
Application 2931
Digital
Supply damper (two DOs; DO 1/DO 2) (optional, in place of
analog)
Application 2931
General exhaust damper (two DOs;
DO 3/DO 4) (optional, in place of analog)
Application 2931
Autozero solenoid in Offboard Air Module
(DO 8)
Application 2931
(Optional) Alarm (DO 7)
Application 2931
Reheat valve (two DOs) (optional, in place
of analog)
Application 2931
Ordering Notes
PRC-OAVS with Pressurization Control by Differential Flow Reset,
Slow Actuation, Floating or Analog Output and Heating by BTU
Compensation
550-767HN