Siemens 125-5050 User Manuals

Table of Contents

• Copyright Notice

  3
• How To Use This Manual

  7
• Chapter 1 – Product Overview

  9
• Hardware Inputs

  10
• Hardware Outputs

  10
• Power Wiring

  11
• Communication Wiring

  12
• Controller LED Indicators

  12
• Temperature Sensors

  13
• Room Temperature Sensor

  13
• Duct Temperature Sensor

  13
• Related Equipment

  13
• Chapter 2 – Applications

  14
• Basic Operation

  14
• Sequencing Logic (optional)

  14
• Control Temperature Setpoints

  14
• Day/Night Mode

  14
• Night Mode Override Switch

  14
• Control Loops

  14
• Calibration

  15
• Damper Status Operation

  15
• Fail-safe Operation

  15
• Heating and Cooling Switchover

  15
• Modulate Damper During Heating Mode (optional)

  16
• Hot Water Reheat

  16
• Electric Reheat

  16
• Notes

  16
• Application 2860 VAV Cooling Only

  17
• Application 2861 VAV Cooling or Heating

  17
• Application 2862 VAV with Electric Reheat or Baseboard Radiation

  17
• Baseboard Radiation

  18
• Electric Heat Interlock

  18
• Application 2863 VAV with Hot Water Reheat

  18
• Application 2864 VAV Series Fan Powered with Electric Reheat

  19
• Fan Operation

  19
• Application 2865 VAV Series Fan Powered with Hot Water Reheat

  20
• Fan Operation

  20
• Application 2866 VAV Parallel Fan Powered with Electric Reheat

  20
• Fan Operation

  21
• Application 2867 VAV Parallel Fan Powered with Hot Water Reheat

  21
• Fan Operation

  22
• Application 2897 Slave Mode

  22
• Using Auxiliary Points

  22
• Using the Controller as a Point Extension Device

  22
• Chapter 3 – Point Database

  24
• Chaper 4 – Troubleshooting

  30
• Basic Service Information

  30
• Preventive Maintenance

  30
• Safety Features

  31
• Controller LEDs

  31
• Glossary

  32
• Index

  35