Trane Tracer UC400

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BAS-SVX48H-EN

configuration files, controller firmware, and TGP2 programs using the File Transfer Utility and

the Backup Utility. Refer to the topics under book, Managing Configurations, Firmware, and

Files .

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Main Page

Table of Contents3
Bacnet Protocol6
Bacnet® Testing Laboratory (BTL) Certification6
Specifications and Dimensions7
Device Connections9
Additional Components11
Water, Discharge, and Outdoor Air Temperature Sensors11
Binary Input Switching Devices11
Zone Temperature Sensors11
Valve and Damper Actuators12
Zone Humidity Sensor12
CO 2 Sensor12
Expansion Modules12
Typical Applications and Terminations13
Binary Inputs14
BI1; Occupancy14
BI2; Condensate Overflow14
BI3; Low Coil Temp Detection15
BI4; Frost Detection15
BI5; Fan Status15
Analog Inputs15
Ground Terminals15
AI1; Space Temperature15
AI2; Space Temperature Local Setpoint15
AI3; Local Fan Mode Input16
AI4; Discharge Air Temperature Sensor16
AI5; Entering Water Temperature16
Universal Inputs16
UI1; Relative Humidity or CO16
Sensor16
UI2; Outdoor Air Temperature17
Binary Outputs17
Override Outputs17
Wiring Requirements17
UC400 Wiring Diagrams19
UC400-B Wiring Diagrams25
Wiring Installation31
Connecting Wires to Terminals31
Bacnet MS/TP Link31
MAC Address31
Bacnet Device ID31
Bacnet Networks, with or Without Tracer SC Controller31
Without a Tracer SC Controller31
With a Tracer SC Controller31
Bacnet MS/TP Link Wiring32
Power Supply33
Transformer Recommendations33
Wiring Requirements33
Connecting 24 Vac Secondary Wires34
Power on Check35
LED Description, Activities, and Troubleshooting36
Sequence of Operation39
Power-Up Sequence39
Random Start39
Occupancy Modes39
Occupied Mode39
Unoccupied Mode40
Occupied Standby Mode40
Occupied Bypass Mode40
Timed Override Control40
Zone Temperature Control40
Discharge Air Tempering42
Heating or Cooling Mode42
Auto-Changeover Entering Water Temperature Sampling Function42
Fan Operation43
Manual Fan Speed Control43
Auto Fan Operation; 1-, 2-, 3-Speed43
Single Zone VAV43
Exhaust Control44
Valve Operation45
Modulating Valve Operation45
3-Wire Floating Point Valve Calibration45
2-Position Valve Operation45
Face/Bypass Damper Operation45
Modulating Outdoor/Return Air Damper45
ASHRAE Cycle 1 Conformance46
ASHRAE Cycle 2 Conformance46
Economizing (Free Cooling)47
Outdoor Air Damper Control with Varying Fan Speed47
CO -Based Demand Controlled Ventilation48
Fan Operating at Multiple Speeds or Single-Zone VAV Control48
DX Cooling Operation, 1 or 2 Circuits49
Heat Pump Operation, 1 or 2 Circuits50
Defrost Operation50
Electric Heat Operation50
Dehumidification Operation50
Unit Protection Strategies51
Smart Reset51
Low Coil Temperature Protection51
Condensate Overflow51
Fan Status51
Fan off Delay52
Filter Maintenance Timer52
Freeze Avoidance52
Freeze Protection, Discharge Air Temperature Low Limit52
Output Testing53
Diagnostics53
Diagnostic Types53
Diagnostic Generated by the UC40054
Operational Causes and Diagnostics57
Configuration and Maintenance60
Settings for CO 2 -Based Demand Controlled Ventilation63
Resources67

Trane Tracer UC400 - Page 62

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