Price Industries Limited DMS Safety guide

v100 –Issue Date: 12/21/21
© 2022 Price Industries Limited. All rights reserved.
MANUAL – INSTALLATION
DMS
Diffuser Measuring Station

II DMS - Manual |priceindustries.com
PRODIGY®- DIGITAL VAV DIFFUSERS
TABLE OF CONTENTS
Product Overview & Installation Instructions
General Description ..................................................... 1
Receiving Inspection ..................................................... 1
Installation ..................................................................... 1
Reading Measured Flow
Accuracy ..................................................................... 3
BACnet ......................................................................... 3
Calibration
K-Factors ..................................................................... 3
Display Navigation
Info Menu...................................................................... 4
Service Menu ................................................................ 4
Troubleshooting............................................................. 6
Having difficulty installing this product?
Price is here to help.
Application Support
Phone: [phone]
Email: [email protected]
SUPPORT

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General Description
The Diffuser Measuring Station (DMS) is an optional addition to the Prodigy VAV diffuser providing air flow measurement at each
Prodigy master diffuser. The collar mounted SP300 multipoint sensor aligned with the flex elbow provides accurate measurement
of air flow throughout the VAV diffuser operating range. In conjunction with the BACnet Interface option, the measured air flow
from each diffuser is available to the BACnet network along with the other measurements and diffuser properties.
Receiving Inspection
After unpacking the DMS assembly, check for shipping damage to the collar, cross flow sensor (SP300), and tubing. If any damage
is found, immediately report to the delivering carrier and Price Industries customer service. During unpacking and installation do
not handle the product by the cross flow sensor as damage may result.
Installation
The DMS must be installed according to the following instructions. Failure to follow the outlined installation procedure may result in
inaccurate air flow measurement readings. The DMS is intended for use with the Prodigy master VAV diffuser with BACnet network
communication.
1. CONNECT THE DMS COMPONENTS
The DMS must be installed directly onto the diffuser inlet in the correct orientation with the TP ports facing the airflow (direction
label on collar). Correct orientation will result in the green port toward the diffuser and the red port toward the duct (see Fig.1).
The high (red) and low (green) pressure Tubing must be connected to the Pressure Control Board following color guidelines
(see Fig. 1). The Pressure Sensor Board is factory mounted on the Prodigy master diffuser control bracket.)
2. DETERMINE DIFFUSER DUCT CONNECTION TYPE
The method of duct connection and resulting inlet conditions can directly affect the performance of the DMS. If a side duct
connection to the diffuser resulting in an elbow is required, use the FlexRight elbow connection method (see figure 2). Follow
this method for a hard duct elbow. If there is a straight duct connection to the diffuser (no elbow for at least three equivalent
duct diameters), use the straight connection method (see Fig. 2). If using flexible duct, ensure that the duct is fully extended
and pulled tight for best results.
Fig. 1

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Attach to low
side - green
Attach to high
side - red
WARNING:
FOR ACCURATE AIR FLOW MEASUREMET THE
DIFFUSER, DMS COLLAR, AND FLEX ELBOW
MUST BE PROPERLAY ALIGNED
PPD Square Prodigy PRD Round Prodigy PSD Swirl Prodigy PLD Linear Prodigy
b. STRAIGHT DUCT CONNECTION: Discard the included FlexRight duct elbow and duct zip ties (X2) and ensure
you have at least three equivalent duct diameters of straight duct run before the diffuser. Ensure to avoid diagonal
transitions or kinks as they may affect accuracy. If using flexible duct, ensure that the duct is fully extended and
pulled tight for best results (see Fig. 3).
Model PLD 60in / 1500mm with 4 slots uses an oval inlet. DMS not available for oval inlet.
Fig. 2
Fig. 3
a. FLEXRIGHT ELBOW CONNECTION: Use the included FlexRight duct elbow and duct zip ties (X2) to maintain
optimal inlet conditions to the diffuser. Ensure that the spokes of the flow cross line up with the elbow and
airflow direction. Rotate the collar if required to achieve desired location and secure the collar to the diffuser inlet
using the three predrilled holes. Pull the flex duct over the bead on the top of the collar and secure. Next, position the
FlexRight elbow and secure using the zip ties through the arms at both ends.
Attach to low
side - green
Attach to high
side - red
TYPICAL INSTALLATION WITH PRODIGY MASTER DIFFUSER
(ORDER SEPARATELY)
TYPICAL INSTALLATION WITH PRODIGY MASTER DIFFUSER
(ORDER SEPARATELY)

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READING THE DMS VALUES
The flow measuremnt is accurate to an average of 10% over the VAV diffuser’s operating range down to a minimum flow as shown
in Table 1. The sensitivity of the pressure transducer below these values will result in a flow reading of zero.
Inlet Size
(in)
Min Flow Reading
(cfm/l/s)
Average Accuracy
(%)
614 / 7 10
826 / 12 10
10 44 / 21 10
12* 64 / 30 10
*Model PLD 60in / 1500mm with 4 slots uses an oval inlet. DMS not available for oval inlet.
The flow measurement may be read using the Prodigy master LCD thermostat or over the BACnet network connected to the
Prodigy master diffuser with BACnet option. The units of measure may be switched between I-P (cfm) and SI (l/s or cmh) using
the Prodigy master LCD thermsotat. Please see Display Navigation for instructions using the LCD thermostat. The following
BACnet objects are used with the DMS.
•AV41 Air-Flow
•AV42 K-Factor
•V43 Sensor connection status
Calibration
The DMS comes factory calibrated and should not require field calibration. The factory K-Factors can be field adjusted if required
by accessing the diffuser Service Menu through the LCD thermostat. Please see Display Navigation to access the menus. The
factory K-Factors are shown below.
Factory Calibration K-Factors
Inlet Size PPD Square PRD Rounde PSD Swirl PLD Linear
6 510 468 510 485
8 950 890 990 1050
10 1500 1250 1300 1660
12 2400 2330 2350 *
*Oval Inlet - DMS not available

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Information Menu LCD Stats Only
The info menu shows information about the controller status regarding room load, damper position and BACnet address info. No
values can be changed from this menu and it is not locked or protected in any way.
The Info Menu is accessed by pressing the Menu button, scroll through with Up and Down buttons.
CONTROL MODULE
2
1. Manual Adjustment at Diffuser
2. Adjustment at Thermostat
OCCUPANCY
ON-CONTACT Occupancy – The Occupancy can be determined by contact closure, motion or by a user pressing a button.
COOLING MODE
LOAD -100%
Room Load
· Cooling Mode is shown as a load from -1 to -100%. (-100% = max).
· Heating Mode is shown as a load from 0 to 100%. (+100% = max).
· Dead band Mode will be shown as 0%, where the room is satisfied.
SUPPLY AIR TEMP
85.0 °F
Duct Temp (S.A.T) Measurement
· If no supply probe is present, LCD will display No Probe.
· If supply probe present, LCD will display temperature.
AIR FLOW
200 cfm
Air Flow Measurement
· If no DMS flow option is present, item will not display
· If DMS flow option is present, LCD will display air flow rate
DAMPER POS.
50%
Damper Position
· This indicates the current position of the damper in percent (%).
· Range is 0-100% (100% = full open or maximum air).
DAMPER TARGET
50%
Target (damper target % in VVT mode)
· Shows the current flow target in % (VVT).
CO2 READING
300 ppm
CO2 Measurement
· If no CO2/Humidity tstat connected, item will not display
· If CO2/Humidity tstat is connected, LCD will display CO2
HUMIDITY READING
65%
Humidity Measurement
· If no CO2/Humidity tstat connected, item will not display
· If CO2/Humidity tstat is connected, LCD will display CO2
MAC ADDRESS
10
MAC Address (MAC address must be unique on the network segment)
· Shows the BACnet MAC address. Range 1-99.
· MAC Address can be set via dip switch.
· If no BACnet module attached, LCD will display MAC address None.
DEVICE INST.
210
Device Instance (Instance must be ‘globally’ unique on your site)
· Displays controller’s BACnet Device Instance (if BACnet is attached).
· Device Instance can range from 0 – 4,194,303.
POWER FREQ
60 HZ
Device Power Frequency Setting
· Displays controller frequency setting.
· Must be set to match frequency of the supply power.
PRODIGY APP
SQUARE
Prodigy Application Model
· Displays model (geometry) of Prodigy diffuser.
PRESS MENU
TO EXIT
Exit – This will exit the info menu if you select Yes.
Note: Info menu will automatically time out after 60 seconds.

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Service Menu LCD Stats Only
The Service Menu allows the balancer/installer to access to the controller setup to change settings. For example setting flows,
heating outputs, etc.
Hold down Menu button for 5 seconds; display will show ‘Passcode:’ Use the Up and Down buttons to enter the password in
this sequence: Down, Up, Up, Down
VVT Menu
Pressure Dependent Mode
Scroll through with Up and Down buttons, press Menu button to apply your changes *---wait---* will display as changes are applied.

VVT
DPR. COOL MIN*
0%
Cool Min Flow
· Cool Min Flow in %
· Range: 0-100% Default: 0%
DPR. COOL MAX.*
100%
Cool Max Flow
· Cool Min Flow in %
· Range: 0-100% Default: 100%
DPR. HEAT MIN*
0%
Heat Min Flow
· Heat Min Flow in %
· Range 0-100% Default: 0%
DPR.HEAT MAX*
100%
Heat Max Flow
· Heat Max Flow in %
· Range 0-100% Default: 100%
DPR. NEUTRAL
0%
Neutral Flow
· Sets the neutral flow
· Range 0-100% Default: 0%
UNOCC DPR POS*
0%
Unocc Dpr Pos
· When Prodigy is unoccupied damper will ‘rest’ at this position
· Range: 0-100% Default: 0%
INLET SIZE*
10 INCHES
Inlet Size
· Size of the diffuser inlet (factory set)
K FACTOR*
1500
K Factor
· If no DMS flow option is present, item will not display
· Air flow calibration factor see DMS manual for more details
AIR FLOW*
200 cfm
Air Flow Measurement
· If no DMS flow option is present, item will not display
· If DMS flow option is present, LCD will display air flow rate
FLOW UNITS*
200 cfm
Air Flow Measurement
· If no DMS flow option is present, item will not display
· Units of measure for air flow adjustable to ‘cfm’, ‘l/s’, or ‘cmh’
PRESS MENU*
TO EXIT
Exit – This will exit the info menu if you select Yes
Note: Info menu will automatically time out after 60 seconds
*Also available over BACnet network if diffuser has BACnet option installed.

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Troubleshooting
• Check duct elbow is aligned with cross flow and aligned with diffuser.
• Check Prodigy diffuser has 24VAC power.
• Check tubing between cross flow and pressure sensor board is connected with high side to high side (red) and
low side to low side (green).
• Check ribbon cable connection from pressure sensor board to master control board.
• Confirm ‘Air Flow’ is shown in Info Menu and Service Menu.

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NOTES

© 2022 Price Industries Limited. All rights reserved.
This document contains the most current product information as of this printing.
For the most up-to-date product information please go to priceindustries.com.