Trane Tracer UC400 Installation and operating instructions

SSAAFFEETTYY WWAARRNNIINNGG

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 BBAASS--SSVVXX006655EE--EENN

Installation, Operation, and Maintenance

Tracer®® UC400/UC400–B

Programmable Controller

Water Source Heat Pump (WSHP)

Introduction

NNoottee:: Specific reference to either UC400 or UC400–B is made throughout this document. All

other content cited in this document about the UC400 is referred to as UUCC440000 CCoonnttrroolllleerr.

The UC400/UC400–B is a multi-purpose, programmable (or application-specific) that provides

direct-digital zone temperature control This controller can operate as a stand-alone device or as

part of a building automation system (BAS) Communication between the controller and a BAS

occurs on an open standard with inter-operable protocols used in Building Automation and

Control Networks (BACnet®) Programming is done by means of the Tracer®TU service tool

This guide provides installation and configuration information for the UC400 Controller with

specific operation description for Water Source Heat Pump (WSHP)

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

Trademarks

All trademarks referenced in this document are the trademarks of their respective owners

Agency Listings and Compliance

The European Union (EU) Declaration of Conformity is available from your local Trane®office

evision History

• Updated table 7 "Output test states" in chapter Typical Applications and Terminations

• Added new topic "Constant Torque ECM Fans" in Sequence of Operation chapter

• Changed the Dehumidification text to Active Dehumidification

• Added new topic "Passive Dehumidification" in Sequence of Operation chapter

• Added "Unit Configuration" diagnostics cause and diagnostics in table 18

• Running edits

BAS-SVX065E-EN 3

BACnet Protocol 5

BACnet®Testing Laboratory (BTL) Certification 5

Specifications and Dimensions 6

Device Connections 8

Additional Components 10

Water, Discharge, and Outdoor Air Temperature Sensors 10

Binary Input Switching Devices 10

Zone Temperature Sensors 10

Valve and Damper Actuators 11

Zone Humidity Sensor 11

Expansion Modules 11

Typical Applications and Terminations 12

Binary Inputs 14

BI1; Occupancy 14

BI2; Compressor 1 Protection Status 14

BI3; Compressor 2 Protection Status 14

BI3/BI4; Frost Detection 14

BI5; Fan Status 14

Analog Inputs 15

Ground Terminals 15

AI1; Space Temperature 15

AI2; Space Temperature Local Setpoint 15

AI3; Local Fan Mode Input 15

AI4; Discharge Air Temperature Sensor 15

AI5; Entering Water Temperature 16

Universal Inputs 16

UI1; Leaving Water Temperature 16

UI2; Relative Humidity or CO2Sensor 16

Pressure Inputs 16

PI1; Condensate Overflow 16

Wiring Requirements 16

UC400 Wiring Diagrams 17

UC400–B Wiring Diagrams 22

Wiring Installation 27

Connecting Wires to Terminals 27

BACnet MS/TP Link 27

MAC Address 27

BACnet Device ID 27

BACnet Networks, With or Without Tracer SC Controller 27

Table of Contents

4BAS-SVX065E-EN

Without a Tracer SC Controller 27

With a Tracer SC Controller 27

BACnet MS/TP Link Wiring 28

Power Supply 29

Transformer Recommendations 29

Wiring Requirements 29

Connecting 24 Vac Secondary Wires 30

Power On Check 31

LED Description, Activities, and Troubleshooting 32

Sequence of Operation 35

Power-up Sequence 35

Random Start 35

Occupancy Modes 35

Occupied Mode 36

Unoccupied Mode 36

Occupied Standby Mode 36

Occupied Bypass Mode 37

Timed Override Control 37

Heat/Cool Operation 37

Fan Operation 38

Single-Zone VAV/Variable Speed Fan Operation 38

Entering Water Temperature Sampling Function 40

Electric Heat Operation 42

Other Modes 43

Operational Troubleshooting 47

Diagnostics 47

Override Outputs 48

Resetting Diagnostics 50

High/Low Pressure Cutout 50

Manual Output Test 50

Cycling Power 50

Building Automation System (BAS) 50

Tracer TU Service Tool 50

Cycling the Fan Switch 50

Operational Causes and Diagnostics 51

Configuration and Maintenance 54

Resources 57

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BAS-SVX065E-EN 5

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 Multiple vendors can use this protocol to share information for monitoring and

supervisory control between systems and devices in a multi-vendor interconnected system The

BACnet®protocol defines standard objects (data points) called BACnet®objects Each object has

a defined list of properties that provide context information about that object In addition,

BACnet®defines a number of application services that are used to interact with objects in a

BACnet®device

BACnet®® Testing Laboratory (BTL) Certification

The UC400 Controller supports the BACnet communication protocol and has been designed to

meet the requirements of the application-specific control profile For more details, refer to the

BTL web site at www bacnetinternational org The UC400 Controller supports the following

equipment when used as an application-specific unit:

• Blower Coils

• Fan Coils

• Unit Ventilators

• WSHP

• VAV

6BAS-SVX065E-EN

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

Controller:

Supporting mounting surface: must be 0.80 lb. (.364 kg)

Environmental Rating

(Enclosure):

NEMA 1

Altitude: 6,500 ft. maximum (1,981 m)

Installation: U.L. 840: Category 3

Pollution: U.L. 840: Degree 2

Housing Material:(a) Polycarbonate/ABS Blend

UV protected

U.L. 94-5VA flammability rating

Mounting: UC400: Mounts on EN 50 022 - 35 X 15 DIN rail.

UC400–B: Pre-mounted.

Agency Listing

UL916 PAZX, Open Energy Management Equipment

UL94-5V, Flammability

CE Marked

FCC Part 15, Subpart B, Class B Limit

AS/NZS CISPR 22:2006

VCCI V-3/2008.04

ICES-003, Issue 4:2004

Communications BACnet®MS/TP, supports BACnet Protocol ASHRAE 135-2004 and Meets BACnet Testing Laboratory (BTL) as an Application

Specific Controller (ASC) Profile Device

(a) Not applicable for the UC400-B model.

BAS-SVX065E-EN 7

Figure 1. UC400 and UC400–B dimensions

5.65 in. (143.5 mm)

(*8 Units)

4.00 in.

(101.6 mm)

2.37 in. (60.1 mm)

*DIN Standard 43 880, Built-in Equipment for Electrical Installation. Overall Dimensions and Related Mounting Dimensions.

1.89 in. (48 mm)

1.79 in. (45.4 mm)

14 Pin AMP

BO4

BO5

24VAC

GND

BO6

BO7

BI2

BI3

AI5

GND

24VAC

GND

14 13 12 11 10 9 8 7 6 5 4 3 2 1

USB

J10

3 Pin

Mini

AMP

Service

J18

3 Pin

Mini

AMP

BO7

24VAC

J14 - JST

BO6

Address

AIP4

GND

4 Pin Phoenix

24VAC

GND

24VAC

GND

24VAC

GND

J15 J17

PI1 PI2

BO9

GND

24VAC

BO8

J16

BO1

24VAC

BO2

24VAC

BO3

24VAC

AMP

Phoenix

PhoenixPhoenix

24VDC

GND

Comm +

Comm -

5 pin Phoenix

BACnet

4 Pin Phoenix

J13

AIP3

GND

AIP2

24VAC

AIP1

GND

6 pin Phoenix

AOP2

GND

Phoenix

AOP1

GND

Phoenix

+ - + -

IMC

J12 - AMP

J11 - AMP

BI1

Phoenix

UIP1

GND

UIP2

GND

24VDC

-Gnd 24VDC

1 2 3 4 5 6 1 2 3 4 5 6 123 4

123 4 12 3 4

1 2 3

345

2 1

6.125 in. (155.58 mm)

4.500 in.

(114.30 mm)

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8BAS-SVX065E-EN

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

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Table 2. Connections

Connection Quantity Types Range Notes

Analog input

(AI1 to AI5) 5

Temperature 10 kΩ thermistor AI1 to AI4 can be configured for timed override

capability.

Setpoint 189 Ω to 889 Ω

Resistive 100 Ω to 100 kΩ Typically used for fan speed switch.

Universal input

(UI1 and UI2) 2

Linear 0–20 mA

These inputs may be configured to be thermistor or

resistive inputs, 0–10 Vdc inputs, or 0–20 mA inputs.

Linear 0–10 Vdc

Temperature 10 kΩ thermistor

Setpoint 189 Ω to 889 Ω

Resistive 100 Ω to 100 kΩ

Binary Open collector/dry contact Low impedance relay contacts recommended.

Pulse Solid state open collector Minimum dwell time is 25 milliseconds On and 25

milliseconds Off.

Binary input

(BI1 to BI3)(a) 3

24 Vac detect The UC400 controller provides the 24 Vac required to

drive the binary inputs when using the recommended

connections.

Binary output

(BO1 to BO3)

(a)

3UC400:Relay

• 2.88 A @24 Vac C pilot

duty

• Gen Purpose

–10 A max up 277 Vac

–10 A max up to 30 Vdc

• Motor Duty

–1/3 hp @ 125 VAC

(7.5 A max)

–1/2 hp @ 277 VAC

(7.5 A max)

Power needs to be wired to the binary output. All

outputs are isolated from each other and from ground

or power.

Note: Ranges given are per contact.

Other

Ranges UC400–B:TRIAC 24 Vac Powered

Binary output

(BO4 to BO9)(a) 6 TRIAC

•UC400: 0.5 A max @24-

277 Vac, resistive and pilot

duty

•UC400–B: 24 Vac

Powered

Use for modulating TRIAC. User determines whether

closing high side (providing voltage to the grounded

load) or low side (providing ground to the power

load).

Note: Ranges given are per contact and power comes

from TRIAC SUPPLY circuit.

BAS-SVX065E-EN 9

Table 2. Connections (continued)

Connection Quantity Types Range Notes

Analog output/

binary input

(AO1/BI4 and

AO2/BI5)

Linear output 0–20 mA

Each termination must be configured as either an

analog output or binary input.

Linear output 0–10 Vdc

Binary input Dry contact

PWM output 80 Hz signal @ 15 Vdc

Pressure inputs

(PI1 and PI2) 23-wire 0–5 in H2OUsed as a binary input for condensate on WSHP.

Overall Point

Total 23

(a) Do Not mix Class 1 and Class 2 voltage wiring in an enclosure or on a controller without an approved barrier between the wiring.

DDeevviiccee CCoonnnneeccttiioonnss

10 BAS-SVX065E-EN

Additional Components

The UC400 Controller requires the use of additional components for monitoring and proper

control of associated equipment The use of specific components is dependent on the type of

application

NNoottee:: 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)

Binary Input Switching Devices

Occupancy, condensate overflow, compressor protection, frost detection, and fan status inputs

accept switching devices that may have normally open (NO) or normally closed (NC) dry

contacts

Zone Temperature Sensors

The following table provides the sensor types and features supported by the UC400 Controller

Table 3. UC400 controller supported sensors and features

Features

Sensor

Type Setpoint Fan

Control System Occupancy LEDs Part

Number BAYSENS Global

Parts

Temperature

Sensor No

No No

X1351152801 BAYSENS077A SEN01448

No Yes X1351153001 BAYSENS073A SEN01450

Temperature

Sensors w/

Fan Control

Single • Off

• Auto

Yes

X1379084501

N/A

SEN01521

Single

• Off

• Auto

• Low

• High

Yes X1379084801 SEN01524

Single

• Off

• Auto

• Low

• Medium

• High

Yes X1379084201 SEN01518

Temperature

Sensor w/

LCD Display

(a)

Single

• Off

• Auto

• Low

• Medium

• High

Can be

configured

for

occupancy

No X1379088604 N/A N/A

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