KMC Controls SimplyVAV BAC-8001 User manual

Installation Guide
Cooling Only BAC-8001
BacNet DDC VAV Controller

2
BAC-8001 VAV Controller
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

3
SECTION 1
About the controllers
This section provides a description of the BacNet DDC
BAC-8001 VAV controllers. It also introduces safety information.
Review this material before installing or operating the controllers.
The BAC-8001 is native BACnet, direct digital controllers 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
BAC-8001 controller providesprecise monitoring and control of connected
points.
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.
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
4
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
MemoryPrograms and program parameters are stored in
nonvolatile memory.
Auto restart on power failure
Application programs
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.
Titus Alpha Controls supplies models BAC-8001
and BAC-8201 with programming sequences for
single-duct VAV applications.

BAC-8001 and BAC-8201 VAV Controllers About the controllers
Specifications
5
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
Operating32 to 120°F (0 to 49° C)
Shipping –40 to 140° 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
6
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
A
B
D
G
F
E
C

About the controllers
Safety considerations
7
Safety
considerations
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.
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.

8
SECTION 2
Installing the controllers
This section provides important instructions and guidelines for
installing the BAC-8001 controller. Carefully review this
information before installing the controllers.
Installing a VAV controller includes the following topics that are covered in this
section.
Setting the rotation limits on page 12
Mountingon page 13
Connecting inputs on page 14
Connecting outputs on page 15
Connecting to an MS/TP network on page 16
Connecting an airflow sensor on page 19
Connecting power on page 20
In addition to the topics, see the section Application drawing on page 21.

Installing the controllers
Setting the rotation limits
9
Setting the
rotation limits Before mounting the controller, set the rotation limits with the supplied stop
screw. Installing the stop screw limits the shaft rotation to either 45 or 60 degrees.
Caution
Before setting the rotation limits on the controller, refer to the damper position
specifications in the VAV control box to which the controller will be attached.
Setting rotation limits that do not match the VAV damper may result in
improper operation or equipment damage.
To set the rotational limits:
1. Turn the controller over so you have access to the back.
2. Manually rotate the actuator fully clockwise as viewed from the back.
3. Remove the stop screw from its storage location and clean any debris from
the threads.
4. Insert the screw into the correct stop position hole.
5. Tighten the screw only until the head touches the plastic in the bottom of
the recess.
Illustration 2-1 Controller stop selections
Stop position
holes
Stop screw
in storage
Rotate CW
Position notch
as shown

BAC-8001 and BAC-8201 VAV Controllers Installing the controllers
Mounting
10
Mounting Mount the controller inside of a metal enclosure. To maintain RF emissions
specifications, use either shielded connecting cables or enclose all cables in
conduit.
Mount the controller directly over the damper shaft. A minimum shaft length of
2.0 inch (51 mm) is required.
Note
.
Mount the controller close enough to the pitot tubes to keep the tubing length to
a minimum. In typical installations the controller’s inputs and sensors are within
24 inches of each other.
Mount the controller as follows:
1. Loosen the nuts on the U-bolt until the shaft can fit through the collar.
2. Place the controller on the damper shaft in the approximate final position.
Position the controller loosely against the mounting surface so that the
mounting bushing can float freely in the mounting tab.
3. Center the mounting bushing in the slot of the mounting tab and secure it
using a #8 self-tapping screw.
4. Manually position the damper in the full open position.
5. Adjust the drive hub as follows:
a. If the damper rotates counter clockwise to close, depress the gear
disengagement button and rotate the drive hub to the full clockwise
position then release the button.
b. If the damper rotates clockwise to close, depress the gear disengagement
button and rotate the drive hub to the full counter clockwise position
then release the button.
6. Lock the hub to the shaft by evenly tightening the V-bolt nuts to 30 to 35
in-lbs.
Illustration 2-2 Controls and indicators
Mounting tab
Gear disengagement button
Airflow sensor inputs
Drive hub
and V-bolt
Status LEDs
Mounting bushing
The controller is designed to directly mount to 3/8 to 5/8 inch (9.5 to 16mm)
round or 3/8 to 7/16 (9.5 to 11mm) square damper shafts.