Trane Tracer UC400 Installation, Operation And Maintenance Manual
Water source heat pump (wshp)
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Installation, Operation, and Maintenance
Tracer® ® UC400/UC400–B
Programmable Controller
Water Source Heat Pump (WSHP)
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
February 2021
S S A A F F E E T T Y Y W W A A R R N N I I N N G G
B B A A S S - - S S V V X X 0 0 6 6 5 5 E E - - E E N N
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Table of Contents
Troubleshooting
Related Manuals for Trane Tracer UC400
Summary of Contents for Trane Tracer UC400
- Page 1 Installation, Operation, and Maintenance Tracer® ® UC400/UC400–B Programmable Controller Water Source Heat Pump (WSHP) S S A A F F E E T T Y Y W W A A R R N N I I N N G G Only qualified personnel should install and service the equipment.
- Page 2 Water Source Heat Pump (WSHP). Copyright This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.
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Page 3: Table Of Contents
Table of Contents BACnet Protocol ............. . . 5 BACnet®... - Page 4 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Without a Tracer SC Controller ......... . . 27 With a Tracer SC Controller .
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Page 5: Bacnet Protocol
BACnet Protocol The Building Automation and Control Network (BACnet®) protocol is ANSI/ASHRAE Standard 135. This standard allows building automation systems or components from different manufacturers to share information and control functions. BACnet® provides building owners the capability to connect various types of building control systems or subsystems together for many uses. -
Page 6: Specifications And Dimensions
Specifications and Dimensions Table 1. UC400/UC400–B specifications Storage Temperature: –48°F to 203°F (–44°C to 95°C) Relative Humidity: Between 5% and 95% (non-condensing) Operating Temperature: –40°F to 158°F (–40°C to 70°C) Humidity: Between 5% and 95% (non-condensing) Input Power: 20.4–27.6 Vac (24, ±15% nominal), 50Hz to 60Hz, 24 VA (24 VA plus binary output loads for a maximum of 12 VA for each binary output) Mounting Weight of Supporting mounting surface: must be 0.80 lb. - Page 7 S S p p e e c c i i f f i i c c a a t t i i o o n n s s a a n n d d D D i i m m e e n n s s i i o o n n s s Figure 1.
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Page 8: Device Connections
Device Connections The following table provides details of the hardware termination configuration options. The hardware terminations are pre-configured for proper equipment operation for blower coil/fan coil applications. W W A A R R N N I I N N G G L L i i v v e e E E l l e e c c t t r r i i c c a a l l C C o o m m p p o o n n e e n n t t s s ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l e e l l e e c c t t r r i i c c a a l l s s a a f f e e t t y y p p r r e e c c a a u u t t i i o o n n s s w w h h e e n n e e x x p p o o s s e e d d t t o o l l i i v v e e e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . - Page 9 D D e e v v i i c c e e C C o o n n n n e e c c t t i i o o n n s s Table 2. Connections (continued) Quantity Types Range Connection Notes...
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Page 10: Additional Components
N N o o t t e e : : Additional components are not included with the UC400 Controller. Water, Discharge, and Outdoor Air Temperature Sensors Temperature sensors must be Trane 10 kΩ (at 25°C) thermistors. Entering water and discharge air inputs can use a sealed temperature sensor (part numbers 4190 1100 and 4190 1133). -
Page 11: Valve And Damper Actuators
4–20 mA output, where 4 mA is 0% RH and 20 mA is 100% RH. The controller provides 24 Vdc to power the zone humidity sensor. N N o o t t e e : : As an option, the UC400 Controller can receive humidity from a Trane Air-fi ™ Wireless Sensor with Humidity. -
Page 12: Typical Applications And Terminations
Heat Heat Pump Cooling Only The following table 1 lists 1 or 2 compressor control with discrete 1– or 2–speed fans based on Trane GE units. Table 5. Factory programmed terminations for Trane GE units UC400/ UC400– BController Inputs/Outputs/Communication Factory Programmed Assumed Terminations... - Page 13 Service Button When Hot Gas Reheat and Electric Heat are present on the same WSHP, Electric Heat will be moved to BO1 on XM32. The following table lists single compressor control with variable speed fan based on Trane EX/ DX units.
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Page 14: Binary Inputs
T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Table 6. Factory programmed terminations for single compressor control for Trane EX/DX units (continued) -
Page 15: Analog Inputs
The UC400 Controller receives the space temperature as a resistance signal from a 10 kΩ thermistor in a standard Trane space temperature sensor that is wired to analog input AI1. A space temperature value communicated by means of a BACnet link, can be used for controllers operating on a BAS. -
Page 16: Ai5; Entering Water Temperature
UC400–B. Table 7. Required inputs Input source Function Related information For more details on power wiring requirements, refer to the Tracer UC400 Terminals: Ground, 24 Vac Controller Programmable Controller 24 Vac Power Installation, Operation, and Maintenance Manual, BAS-SVX20. Space Temperature Local. -
Page 17: Uc400 Wiring Diagrams
T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s UC400 Wiring Diagrams Figure 2. Common input/sensor connections (Trane EX units only) Compressor... - Page 18 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 3. 2–position ventilation economizer (Trane EX units only)
- Page 19 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 4.
- Page 20 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 5.
- Page 21 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 6.
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Page 22: Uc400-B Wiring Diagrams
T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 8. - Page 23 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 10. 2–position ventilation economizer for Trane EX and DX units...
- Page 24 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 11.
- Page 25 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 12.
- Page 26 T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s Figure 13.
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Page 27: Wiring Installation
Wiring Installation The Tracer UC400 Controller can be installed on a BACnet MS/TP link, or with the Trane ® Wireless Communication Interface (WCI), which enables wireless communication. All wiring must comply with the National Electrical Code (NEC™) and local electrical codes. -
Page 28: Bacnet Ms/Tp Link Wiring
Zone Sensor Communications LINK LINK Jack Wiring LINK LINK SERVI SERVI SERVICE TOOL SERVICE TOOL Trane BACnet Terminator 1 2 3 4 1 2 3 4 1 2 3 4 24VDC 24VDC 24VDC BACnet BACnet BACnet 1 2 3 4... -
Page 29: Power Supply
W W i i r r i i n n g g I I n n s s t t a a l l l l a a t t i i o o n n Power Supply Read the following Warnings, Cautions, and Notices before proceeding. W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! ! F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . -
Page 30: Connecting 24 Vac Secondary Wires
W W i i r r i i n n g g I I n n s s t t a a l l l l a a t t i i o o n n I I m m p p o o r r t t a a n n t t : : The controller must receive AC power from a dedicated power circuit. Failure to comply may cause the controller to malfunction. -
Page 31: Power On Check
W W i i r r i i n n g g I I n n s s t t a a l l l l a a t t i i o o n n the controller ground terminal and the transformer. b. -
Page 32: Led Description, Activities, And Troubleshooting
LED Description, Activities, and Troubleshooting LEDs are used to provide controller serviceability. The UC400/UC400–B has the following LEDs located on the front. Refer to the legend in the second image in the figure below for LED placements. • Marquee LED. •... - Page 33 L L E E D D D D e e s s c c r r i i p p t t i i o o n n , , A A c c t t i i v v i i t t i i e e s s , , a a n n d d T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Table 9.
- Page 34 L L E E D D D D e e s s c c r r i i p p t t i i o o n n , , A A c c t t i i v v i i t t i i e e s s , , a a n n d d T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Table 9.
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Page 35: Sequence Of Operation
• The state of the local (hard wired) occupancy binary input BI1. • A timed override request from a Trane zone sensor. • A communicated signal from either a Tracer SC or BAS. A communicated request, from either a Tracer SC or BAS, takes precedence over local requests. -
Page 36: Occupied Mode
S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n Table 10. Occupancy modes Resultant Occupancy–... -
Page 37: Occupied Bypass Mode
OFF. The controller remains in occupied bypass mode until either the CANCEL button is pressed on the Trane zone sensor or the occupied bypass time expires (configured using the Tracer TU service tool). The temperature setpoints can be configured as local (hard wired), communicated, or stored default values using the Tracer TU service tool. -
Page 38: Fan Operation
S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n Fan Operation The UC400 Controller can be configured to operate as a 1- or 2-speed fan or as a variable speed fan in a Single Zone VAV. - Page 39 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n Table 11. Constant torque supply fan default settings Low Setting Minimum High Setting...
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Page 40: Entering Water Temperature Sampling Function
S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n 1– and 2–Speed Fan Operation When using a 2-speed fan, the UC400 Controller can be configured for default operation by adjusting the Cooling Fan Speed Default and Heating Fan Speed Default. - Page 41 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n When the above conditions have been met, Isolation Valve is opened for three (3) minutes, the EWT reading is recorded, and WSE operation feasibility is determined.
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Page 42: Electric Heat Operation
S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n Table 14. Coil icing Cooling Mode Control Action Economizer... -
Page 43: Other Modes
S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n compressor units. Zone temperature is compared against active setpoints for compressor operation. - Page 44 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n humidity. Disable point is 52% relative humidity. These values are configured by adjusting AV/68, Space Relative Humidity Deadband.
- Page 45 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n When the unit enters passive dehumidification mode, the fan will stay at active minimum setpoint for a minimum of three minutes.
- Page 46 S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n Maintenance Required informational diagnostic. After the diagnostic is cleared, the UC400 Controller resets the fan runtime to zero and begins accumulating fan run hours again.
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Page 47: Operational Troubleshooting
Operational Troubleshooting This section provides information about the various diagnostics and troubleshooting for the UC400 Controller. W W A A R R N N I I N N G G L L i i v v e e E E l l e e c c t t r r i i c c a a l l C C o o m m p p o o n n e e n n t t s s ! ! F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l e e l l e e c c t t r r i i c c a a l l s s a a f f e e t t y y p p r r e e c c a a u u t t i i o o n n s s w w h h e e n n e e x x p p o o s s e e d d t t o o l l i i v v e e e e l l e e c c t t r r i i c c a a l l c c o o m m p p o o n n e e n n t t s s c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . -
Page 48: Override Outputs
O O p p e e r r a a t t i i o o n n a a l l T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Table 16. - Page 49 O O p p e e r r a a t t i i o o n n a a l l T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g BAS-SVX065E-EN...
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Page 50: Resetting Diagnostics
O O p p e e r r a a t t i i o o n n a a l l T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Resetting Diagnostics The following methods describe resetting unit diagnostics: •... -
Page 51: Operational Causes And Diagnostics
Operational Causes and Diagnostics Table 18. UC400 controller diagnostic causes and diagnostics Diagnostic Probable Cause Fan Not Energizing The wiring between the UC400 Controller outputs, fan relays, and contacts must be present and correct for Unit Wiring normal fan operation. The fan motor and relay must be checked to ensure proper operation. - Page 52 O O p p e e r r a a t t i i o o n n a a l l C C a a u u s s e e s s a a n n d d D D i i a a g g n n o o s s t t i i c c s s Table 18.
- Page 53 O O p p e e r r a a t t i i o o n n a a l l C C a a u u s s e e s s a a n n d d D D i i a a g g n n o o s s t t i i c c s s Table 18.
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Page 54: Configuration And Maintenance
There are two main configuration options: • Use the Tracer TU Configuration Screen to create a factory configuration. N N o o t t e e : : Some modifications can be made to the Trane factory water source heat pump configuration. •... - Page 55 C C o o n n f f i i g g u u r r a a t t i i o o n n a a n n d d M M a a i i n n t t e e n n a a n n c c e e •...
- Page 56 C C o o n n f f i i g g u u r r a a t t i i o o n n a a n n d d M M a a i i n n t t e e n n a a n n c c e e the Backup Utility.
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Page 57: Resources
Resources • Tracer UC400 Programmable Controller Installation, Operation, and Maintenance Manual (BAS-SVX20-EN). • Tracer UC400 Programmable Controller Installation Sheet (X39641064-01). • Tracer TU Online Help Tracer TU Service Tool Getting Started Guide (TTU-SVN01-EN). • Tracer SC System Controller Installation and Setup (BAS-SVX31-EN). - Page 58 N N o o t t e e s s BAS-SVX065E-EN...
- Page 59 N N o o t t e e s s BAS-SVX065E-EN...
- Page 60 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.