Titus BAC-8001, BAC-8201 User Manual

Titus Alpha VAV Controller

Cooling Only BAC-8001

Installation Guide

BAC-8001 and BAC-8201 VAV Controllers

Contents

Section 1

About the controllers

Specifications ........................................................................................................................5

Safety considerations .......................................................................................................... 7

Section 2

Installing the controllers

Setting the rotation limits ................................................................................................. 9

Mounting ............................................................................................................................ 10

Connecting inputs .............................................................................................................11

Connecting outputs ........................................................................................................... 12

Connecting to sensors ....................................................................................................... 12

Connecting to an MS/TP network .................................................................................. 13

Connecting an airflow sensor .......................................................................................... 16

Connecting power .............................................................................................................17

Application drawing ......................................................................................................... 18

Section 3

Setting up VAV controllers

Network communications ................................................................................................ 19

Setting temperature setpoints .......................................................................................... 20

Setting airflow setpoints ................................................................................................... 21

Setting the VAV terminal unit parameters .................................................................... 21

Balancing airflow ............................................................................................................... 21

SECTION 1

About the controllers

This section provides a description of the Titus Alpha BAC-8001 and BAC-8201 VAV controllers. It also introduces safety information. Review this material before installing or operating the controllers.

BAC-8001 and BAC-8201

The designed for VAV terminal units. An integrated actuator and the supplied programs make these ideal controllers for basic single-duct cooling and heating applications. Install these versatile controllers in stand-alone environments or networked to other BACnet devices. As part of a complete facilities management system, the and control of connected points.

are native BACnet, direct digital controllers

BAC-8001 and BAC-8201

BACnet MS/TP compliant Standard VAV control sequences are incorporated to provide pressure independent control of VAV unit On-board airflow sensor for use with a single or multi-point differential pressure measuring station or pitot tube.

controllers provide precise monitoring

Specifications

Analog inputs All inputs are configured as analog objects

Active inputs 1 Passive inputs 3 Air flow sensor 1 Key features Standard units of measure.

Overvoltage input protection

Connector Spade connectors, 0.25 inch Conversion 12–bit analog–to–digital conversion Input range 0–12 volts DC

Outputs, binary 2 for the internal actuator

Key features Conversion 12–bit analog–to–digital conversion Connector Spade connectors, 0.25 inch Output range Maximum switching 24 VAC at 3 amperes

About the controllers

Specifications

Communications

BACnet MS/TP EIA–485 operating at rates up to 76.8 kilobaud.

Removable screw terminal block. Wire size 12–24 AWG

Sensor jack RJ-45 jack compatible with model STE-8000 and

STE-6000 models with RJ-45 jacks

Supported objects See PIC statement for supported BACnet objects

Control Basic 5 program areas in BAC-8001

6 program areas in BAC-8201

PID loop objects 2 Value objects 60 analog, 32 binary, and 12 multistate

Memory Programs and program parameters are stored in

nonvolatile memory. Auto restart on power failure

Application programs

Titus Alpha Controls supplies models BAC-8001 and BAC-8201 with programming sequences for single-duct VAV applications.

Cooling and heating VAV Balancing UL 864 smoke controll (BAC-8201 only)

Air flow sensor features Configured as BACnet analog input object.

CMOS differential pressure 0-2 inches of water (0-500 Pa) measurement range. Internally linearized and temperature compensated. Span accuracy 4.5% of reading. Barbed connections for 1/4 FR tubing. Range dependent upon DP pickup, tubing size/ length and connections.

Actuator specifications

Torque 40 in-lb. (4.5 N

•m)

Angular rotation 0 to 95°

Adjustable end stops at 45° and 60° rotation

Motor timing, BAC-8001 90 sec./90° at 60 Hz

108 sec./90° at 50 Hz

Motor timing, BAC-8201 60sec./90° at 60 Hz

72 sec./90° at 50 Hz

Shaft size Directly mounts on 3/8 to 5/8 inch (9.5 to 16 mm)

round or 3/8 to 7/16 inch (9.5 to 11 mm) square damper shafts.

BAC-8001 and BAC-8201 VAV Controllers About the controllers

Specifications

Regulatory UL 916 Energy Management Equipment

FCC Class B, Part 15, Subpart B BACnet Testing Laboratory listed as an application specific controller (ASC). UL 864 smoke controls (BAC-8201 only)

Installation

Supply voltage 24 volts AC, -15%, +20% 5 VA Weight 13.2 ounces (376 grams) Case material Flame retardant plastic

Environmental limits

Operating 32 to 120° Shipping –40 to 140°

F (0 to 49° C)

F (–40 to 60° C)

Humidity 5–95% relative humidity (non-condensing)

Models

BAC-8001 VAV controller with 90 second actuator and reheat BAC-8201 VAV controller with 60 second actuator, reheat,

and UL 864 smoke control application

About the controllers

Specifications

Dimensions

Table 1-1 BAC-8000 dimensions

ABCD EFG

6.53 in.4.89 in.4.25 in.0.77 in.6.00 in.2.14 in.1.92 in.

166 mm 124 mm 108 mm 19 mm 152 mm 54 mm 49 mm

About the controllers

Safety considerations

Titus assumes the responsibility for providing you a safe product and safety guidelines during its use. Safety means protection to all individuals who install, operate, and service the equipment as well as protection of the equipment itself. To promote safety, we use hazard alert labeling in this manual. Follow the associated guidelines to avoid hazards.

Danger

Danger represents the most severe hazard alert. Bodily harm or death will occur if danger guidelines are not followed.

Warning

Warning represents hazards that could result in severe injury or death.

Caution

Caution indicates potential personal injury or equipment or property damage if instructions are not followed.

Note

Notes provide additional information that is important.

Detail

Provides programing tips and shortcuts that may save time.

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