Trane Tracer UC400 Uc

52 VAV-SVX07B-EN
Calibration, Operation Modes, and Control
Fan and On/Off 
electric (1 to 3 
stages)
Not
applicable
Parallel fan
Local thermostatic:
•On: Zt < HSP
• Off: Zt HSP + 0.5 °F (0.28°C)
Local thermostatic:
• On: Zt < HSP - 1°F (0.56°C)
• Off: Zt  HSP - 0.5°F (0.28°C)
Local thermostatic:
• On: Zt < HSP - 2°F (1.11°C)
• Off: Zt  HSP - 1.5°F
(0.83°C)
• Each stage represents an equal
percentage of total capacity.
• Total capacity is limited by
communicated supply heat
control.
• Each stage represents an equal percentage of total capacity.
• Total capacity is limited by communicated supply heat control.
Fan and On/Off
hot water (1 to 3
stages)
Not
applicable
Parallel fan
Local thermostatic:
•On: Zt < HSP
• Off: Zt  HSP + 0.5°F (0.28°C)
Local thermostatic:
• On: Zt < HSP - 1°F (0.56°C)
• Off: Zt  HSP - 0.5°F (0.28°C)
Not applicable
Total capacity is limited by
communicated supply heat control.
Total capacity is limited by
communicated supply heat
control.
Not applicable
Fan and
Modulating hot
water
Not
applicable
Parallel fan
• Local PI capacity loop.
• Modulating valve capacity = Total
capacity.
• Valve drive incrementally open/
closed.
• Total capacity limited by
communicated supply heat
control.
• Local PI capacity loop.
• Modulating valve capacity = Total capacity.
• Valve drive incrementally open/closed.
• Total capacity limited by communicated supply heat control.
Table 7. Local Heat Only With Parallel Fan Present (continued)
Configuration Method of Control
Local Remote Fan Stage 1 Stage 2 Stage 3

Trane Tracer UC400 Specifications

General

Mounting	DIN Rail
Operating Temperature	-40°F to 158°F (-40°C to 70°C)
Enclosure Rating	IP20
Controller Type	Programmable
Communication Protocol	BACnet MS/TP
Power Supply	24 VAC
Power Consumption	10 VA
Humidity Range	5% to 90% RH non-condensing
Supply Voltage	24 VAC/VDC