KMC Controls BAC-5901C-AFMS Manuel utilisateur

Airflow Measurement System

Installation Guide

Contents

Example Diagrams .................................................2

Standard Application .......................................2

Outdoor Air Damper Pressure Assist Application..2

Return Air Damper Pressure Assist Application....3

Mounting the System Components ...........................4

Mounting the Controller ...................................4

Mounting the Inclinometer................................5

Mounting the Supply Airflow Pickup Tubes..........6

Mounting Pickup Tubes for Pressure Assist.........8

Mounting the Pressure Transducer(s)...............10

Mounting the OAT, RAT, and MAT Sensors .........11

Mounting a Proportional Actuator ....................13

Connecting System Components to the Controller ....14

Connecting the Airflow Pickup Tubes ...............14

Connecting the Inclinometer ...........................15

Connecting the Outside Air Temperature Sensor.15

Connecting the Return Air Temperature Sensor ..16

Connecting the Mixed Air Temperature Sensor...16

Connecting the Proportional Actuator...............17

Connecting Networks...........................................18

Connecting an Ethernet Network......................18

Connecting an MS/TP Network ........................18

Connecting Power ...............................................20

Connecting Power to the Controller..................20

Connecting Power to the Inclinometer ..............20

Connecting Power to the Pressure Transducer(s)20

Connecting Power to the Proportional Actuator..21

Controller Power and Communication Status ...........22

Controller MS/TP Network Isolation Bulbs...............23

Wiring Diagrams..................................................24

Input/Output Objects/Connections .........................30

Configuring and Operating ....................................30

Important Notices................................................31

KMC Controls, 19476 Industrial Drive, New Paris, IN 46553 /877-444-5622 /Fax: 574-831-5252 /www.kmccontrols.com

Standard Application

Example Diagrams

REVISE

Outdoor Air Damper Pressure Assist Application

TrueFit Airflow Measurement System Installation Guide 2925-019-05C

Return Air Damper Pressure Assist Application

TrueFit Airflow Measurement System Installation Guide 3925-019-05C

Mounting the System Components

Mounting the Controller

NOTE: Mount the controller inside a metal enclosure for RF shielding and physical protection.

NOTE: To mount the controller with screws on a flat surface, complete the steps in On a Flat Surface Or to

mount the controller on a 35 mm DIN rail (such as integrated in an HCO-1103 enclosure), complete

the steps in On a DIN Rail.

On a Flat Surface

1. Position the controller on a flat surface so that the color-coded terminal blocks 1are easy to access for

wiring after the controller is mounted.

NOTE: The black terminals are for power. The green terminals are for inputs and outputs. The grey

terminals are for communication.

2. Screw a #6 sheet metal screw through each corner 2of the controller.

On a DIN Rail

1. Position the DIN rail 3so that the color-coded terminal blocks are easy to access for wiring after the

controller is mounted.

2. Pull out the DIN latch 4until it clicks once.

3. Position the controller so that the top four tabs 5of the back channel rest on the DIN rail.

TrueFit Airflow Measurement System Installation Guide 4925-019-05C

4. Lower the controller against the DIN rail.

5. Push in the DIN latch 6to engage the rail.

NOTE: To remove the controller, pull the DIN latch until it clicks once and lift the controller off the DIN rail.

Mounting the Inclinometer

NOTE: If the outside air damper has vertical-axis damper blades, you will first need to install an HLO-1050

Linkage Kit on the outside air damper. (See the HLO-1050 Linkage Kit Installation Guide.) Then

continue below.

1. Position the inclinometer on a horizontal-axis outside air damper blade so that the wire is parallel with the

blades and the arrow on the inclinometer sticker points up.

KMC Conquest Airflow Measurement System

Model: BAC-9311C(E)

CREATION DATE: FILENAME:

REVISION DATE:

DRAWING TITLE:

REVISION:

19476 INDUSTRIAL DR.

NEW PARIS, IN 46553

PHONE: 574.831.5250

FAX: 574.831.5252

kmccontrols.com

KMC CONQUEST AIRFLOW MEASUREMENT SYSTEM W/BAC-9311

AFMS-9311C-1-SUBMITTAL

9/1/21

NOTES:

1. Controller settings must be initially set using

an STE-9XX1.

2. See the AFMS Selection, Installtion and

Application Guides for additional installation

details.

3. See www.kmccontrols.com for accessories

and additional details.

AIRFLOW

TUBE

POLY

TUBING

SUPPLY

DUCT

AIRFLOW

TUBE

AIRFLOW

TUBE

SUPPLY

DUCT

SUPPLY

DUCT

AIRFLOW

TUBE

NOTE: If the unit has more than one outside air damper, mount the inclinometer on a horizontal-axis return

air damper blade. (However, if the unit also has more than one return air damper, an AFMS cannot

be installed.)

2. Attach the inclinometer to the damper blade with two #8 sheet metal screws.

3. Route the cord away from the damper so that it will not bind the damper.

4. Route the cord to the controller.

NOTE: Attach adequate strain relief (e.g. with wire ties) if needed to prevent the inclinometer from

accidentally being pulled off of the damper blade during equipment maintenance.

TrueFit Airflow Measurement System Installation Guide 5925-019-05C

Mounting the Supply Airflow Pickup Tubes

There must be enough pressure flow pickup tubes must installed, for the size of the opening, to get an

accurate average value for the air-stream. Multiple pickup tubes (at least 2) connected in a parallel pitot array

are recommended.

The supply air pressure flow pickup tubes can be installed in one of three ways:

yOn the Supply Air Fan Bell (using SSS-1112/3/4) on page 6.

yOn the Supply Air Fan Bell (using SSS-1115/6/7) on page 6.

yIn the Supply Air Duct (using SSS-101x) on page 6.

On the Supply Air Fan Bell (using SSS-1112/3/4)

1. Position the pickup tubes’ mounting foot on the edge of the fan bell so that the ends of the tubes are

pointing toward the center of the fan inlet.

NOTE: All pickup points must be within the air-stream for accurate averaging of the differential pressure

flow. If the pickup tubes are too long, use a shorter model.

2. Attach the tubes to the fan bell using two self-tapping screws inserted through the 3/16” mounting holes.

3. Repeat steps 1 to 2 to mount the remaining pickup tubes.

On the Supply Air Fan Bell (using SSS-1115/6/7)

1. Position the pickup tubes so that the mounting feet span the fan inlet and all pickup points are within the

air-stream.

NOTE: All pickup points must be within the air-stream for accurate averaging of the differential pressure

flow. If the pickup tubes are too long, use a shorter model.

2. Attach the first mounting foot to the fan bell using two self-tapping screws inserted through the 3/16”

mounting holes.

3. Attach the second mounting foot to the opposite edge of the fan bell (or the strut) using two self-tapping

screws inserted through the 3/16” mounting cutouts.

4. Repeat steps 1 to 3 to mount the remaining pickup tubes.

In the Supply Air Duct (using SSS-101x)

NOTE: The pressure flow pickup tubes should be mounted in filtered air in the location of laminar flow,

which is about 6 straight duct diameters down the air duct.

1. Determine the duct’s flow direction and install the pickup tubes based on the flow arrow imprint.

NOTE: The pickup tubes must be mounted with the arrow pointing in the direction of the airflow.

TrueFit Airflow Measurement System Installation Guide 6925-019-05C

2-3/4” (70 mm)

3-1/2”

(89 mm)

7/16”

(11 mm)

1/4”

(6 mm)

thick foam gasket

1-1/2”

(38 mm)

for SSS-101x

1-1/4”

(32 mm)

for SSS-100x

3-5/32”

(80 mm) for SSS-10x2

5-13/32”

(137 mm) for SSS-10x3

7-21/32” (195 mm) for SSS-10x4

9-29/32”

(252 mm) for SSS-10x5

1/4" nipple

(SSS-100x)

for 3/8" OD

polyethylene

tubing or

3/16" nipple

(SSS-101x) for

1/4" OD tubing

Mounting Holes, 3/16” (5 mm)

2. Cut a 7/8” hole in the duct to accept the pickup tubes.

1-3/8” (35 mm) 1-3/8” (35 mm)

Drill two holes for self-tapping screws inserted through

the pickup tubes’3/16” (5 mm) mounting holes.

Cut 7/8”

(22 mm)

diameter

3. Attach the pickup tubes to the duct using two self-tapping screws inserted through the 3/16” mounting

holes.

4. Repeat steps 1 to 3 to mount the remaining pickup tubes.

TrueFit Airflow Measurement System Installation Guide 7925-019-05C

Mounting Pickup Tubes for Pressure Assist

Mounting for OAD Pressure Assist

Complete these additional steps only if installing a BAC-5901C-AFMS or BAC-5901CE-AFMS for an OAD

pressure assist application. (See the KMC AFMS Selection Guide for details.)

Mounting the First Airflow Pickup Tube

1. Find a location for the first pickup tube outside of the outside air damper, in a location without turbulent

flow from the incoming outside air-stream.

NOTE: For example, in a corner under the outside air intake hood. (See the drawing above.)

2. Determine the airflow direction in order to install the pickup tube so that the FLOW arrow imprint is

perpendicular to the direction of the airflow (for static pressure measurement).

NOTE: In this case, the FLOW arrow imprint can point either up or down. Mark the SSS-10xx to assure

others that this perpendicular orientation is indeed the intended orientation.

3. Cut a 7/8” (22 mm) hole in the duct to accept the pickup tube.

4. Attach the pickup tube to the sheet metal using two self-tapping screws inserted through the 3/16” (5 mm)

mounting holes.

Mounting the Second Airflow Pickup Tube

1. Find a location for the second pickup tube in the mixed air chamber, in a location without turbulent air flow.

NOTE: For example, in a corner of the mixed air chamber just inside of the outside air damper. (See the

drawing above.)

2. Determine the airflow direction in order to install the pickup tube so that the FLOW arrow imprint is

perpendicular to the direction of the airflow (for static pressure measurement).

NOTE: In this case, the FLOW arrow imprint can point either up or down. Mark the SSS-10xx to assure

others that this perpendicular orientation is indeed the intended orientation.

3. Cut a 7/8” (22 mm) hole in the duct to accept the pickup tube.

4. Attach the pickup tube to the sheet metal using two self-tapping screws inserted through the 3/16” (5 mm)

mounting holes.

TrueFit Airflow Measurement System Installation Guide 8925-019-05C

Mounting for RAD Pressure Assist

Complete these steps only if installing a BAC-5901C-AFMS or BAC-5901CE-AFMS for a RAD pressure assist

application. (See the KMC AFMS Selection Guide for details.)

Mounting the First Airflow Pickup Tube

1. Find a location for the first pickup tube near the return air damper, on the damper’s upstream side.

2. Determine the airflow direction in order to install the pickup tube so that the FLOW arrow imprint is

perpendicular to the direction of the airflow (for static pressure measurement).

NOTE: In this case, the FLOW arrow imprint can point either up or down (in a horizontal duct), or either left

or right (in a vertical duct).

NOTE: It is recommended that a marking be applied to the SSS-10xx to assure others that this

perpendicular orientation is indeed the intended orientation.

3. Cut a 7/8” (22 mm) hole in the duct to accept the pickup tube.

4. Attach the pickup tube to the sheet metal using two self-tapping screws inserted through the 3/16” (5 mm)

mounting holes.

Mounting the Second Airflow Pickup Tube

1. Find a location for the second pickup tube near the return air damper, on the damper’s downstream (i.e.

mixed air) side.

2. Determine the airflow direction in order to install the pickup tube so that the FLOW arrow imprint is

perpendicular to the direction of the airflow (for static pressure measurement).

NOTE: In this case, the FLOW arrow imprint can point either up or down (in a horizontal duct), or either left

or right (in a vertical duct).

NOTE: It is recommended that a marking be applied to the SSS-10xx to assure others that this

perpendicular orientation is indeed the intended orientation.

3. Cut a 7/8” (22 mm) hole in the duct to accept the pickup tube.

4. Attach the pickup tube to the sheet metal using two self-tapping screws inserted through the 3/16” (5 mm)

mounting holes.

TrueFit Airflow Measurement System Installation Guide 9925-019-05C

Mounting the Pressure Transducer(s)

NOTE: Complete these steps only if using a BAC-5901C(E)-AFMS controller.

NOTE: Avoid locations with severe vibrations or excessive moisture. The enclosure has a standard 1/2-inch

conduit opening and may be installed with either a conduit coupler or a cable-gland-type fitting.

CAUTION

Do not use in explosive or hazardous environments, with combustible or flammable gasses, as

a safety or emergency stop device, or in any other application where failure of the product could

result in personal injury.

1. Ensure there is enough space around the unit to make the pressure and electrical connections.

2. Use screws threaded through the case’s mounting holes to fasten the assembly to a location near the array

of pressure flow pickup tubes. Do not over-tighten.

3. If additional pressure flow pickup tubes were installed at the outside air damper or return air damper

location for pressure assist measurements, repeat steps 1 and 2 for a second pressure transducer located

near those pickup tubes.

TrueFit Airflow Measurement System Installation Guide 10 925-019-05C

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