KMC Controls TRUEFIT MEP-4552 User manual

Airflow Measurement System
Installation Guide
Contents
Example Diagrams .................................................2
Standard Application .......................................2
OAD Pressure Assist Application .......................3
RAD 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 ...............................................19
Connecting Power to the Controller..................19
Connecting Power to the Inclinometer ..............19
Connecting Power to the Pressure Transducer(s)19
Connecting Power to the Proportional Actuator..20
Controller Power and Communication Status ...........21
Controller MS/TP Network Isolation Bulbs...............21
Wiring Diagrams..................................................22
Input/Output Objects/Connections .........................28
Configuring and Operating ....................................28
Important Notices................................................29
KMC Controls, 19476 Industrial Drive, New Paris, IN 46553 /877-444-5622 /Fax: [phone] /www.kmccontrols.com

Standard Application
Example Diagrams
Outdoor Air Damper Pressure Assist Application
KMC Airflow Measurement System Installation Guide 2925-019-07B

Return Air Damper Pressure Assist Application
KMC Airflow Measurement System Installation Guide 3925-019-07B

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 enclosure), complete the steps
in On a DIN Rail.
On a Flat Surface
1. Position the controller on a flat surface so that the terminal blocks are 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 (four total) through each corner of the controller.
On a DIN Rail
1. Position the DIN rail so that the color-coded terminal blocks are easy to access for wiring after the
controller is mounted.
2. Pull out the DIN latch until it clicks once.
3. Position the controller so that the top four tabs of the back channel rest on the DIN rail.
4. Lower the controller against the DIN rail.
5. Push in the DIN latch to engage the rail.
NOTE: To remove the controller, pull the DIN latch until it clicks once and lift the controller off the DIN rail.
KMC Airflow Measurement System Installation Guide 4925-019-07B

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: [phone]
FAX: [phone]
kmccontrols.com
KMC CONTROLS, INC.©2021
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.
HL
HL
H
L
H
L
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 wire away from the damper so that it will not bind the damper.
4. Route the wire 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.
KMC Airflow Measurement System Installation Guide 5925-019-07B

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 7.
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.
KMC Airflow Measurement System Installation Guide 6925-019-07B

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.
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
or
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.
KMC Airflow Measurement System Installation Guide 7925-019-07B

Mounting Pickup Tubes for Pressure Assist
Mounting for OAD Pressure Assist
Complete these additional steps only if installing a TRF-5901C-AFMS or TRF-5901CE-AFMS for an OAD
pressure assist application. (See the TrueFit AFMS Selection Guide for details.)
Mounting the First Pickup Tube
1. Find a location for the first pickup tube outside of the outside air damper, in a location where there isn’t
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 tubes so that the FLOW arrow imprint is
perpendicular to the direction of the air flow (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 tubes.
4. Attach the pickup tubes to the sheet metal using two self-tapping screws inserted through the 3/16” (5
mm) mounting holes.
Mounting the Second Pickup Tube
1. Find a location for the second pickup tube in the mixed air chamber, in a location where there isn’t turbulent
air flow.
NOTE: For example, in a corner of the mixed air chamber just inside of the outside air damper.
2. Determine the airflow direction in order to install the pickup tubes so that the FLOW arrow imprint is
perpendicular to the direction of the air flow (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 tubes.
4. Attach the pickup tubes to the sheet metal using two self-tapping screws inserted through the 3/16” (5
mm) mounting holes.
KMC Airflow Measurement System Installation Guide 8925-019-07B

Mounting for RAD Pressure Assist
Complete these steps only if installing a TRF-5901C-AFMS or TRF-5901CE-AFMS for a RAD pressure assist
application. (See the TrueFit 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.
KMC Airflow Measurement System Installation Guide 9925-019-07B

Mounting the Pressure Transducer(s)
NOTE: Complete these steps only if using a TRF-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.
KMC Airflow Measurement System Installation Guide 10 925-019-07B