TEC TRUEFLOW DG-1000 Manual
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TEC TRUEFLOW DG-1000 Manual

Air handler flow meter
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TRUEFLOW
AIR HANDLER
®
FLOW METER
USING THE DG-1000 WITH THE
TRUEFLOW AIR HANDLER FLOW METER

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Summary of Contents for TEC TRUEFLOW DG-1000

  • Page 1 TRUEFLOW AIR HANDLER ® FLOW METER USING THE DG-1000 WITH THE TRUEFLOW AIR HANDLER FLOW METER...

  • Page 2: Energy Conservatory Warranty

    ENERGY CONSERVATORY WARRANTY EXPRESS LIMITED WARRANTY: Seller warrants that this product, under normal use and service as described in the operator’s manual, shall be free from defects in work- manship and material for a period of 24 months, or such shorter length of time as may be specified in the operator’s manual, from the date of shipment to the Customer.
  • Page 3 INTRODUCTION TO THE TRUEFLOW® AIR HANDLER FLOW METER The air flow rate through residential air handlers is an important variable in estimating and optimizing the performance of heat pumps, air conditioners and furnaces. Numerous field studies of installed heating and cooling systems around the United States have found that insufficient air flow across the indoor coil is an extremely common problem.
  • Page 4 The front side of the Metering Plate has the TEC label and logo on it, as shown to the right, and needs to be facing “upstream” into the airflow (i.e. away from the air handler fan).

  • Page 5: Static Pressure Probe

    SYSTEM COMPONENTS OF THE TRUEFLOW® AIR HANDLER FLOW METER It is sometimes necessary to attach two spacers to a Metering Plate at the same time. Attaching the second spacer is done in the same manner as the first spacer - push the open side of the second spacer into the attachment channels found on the Metering Plate and first spacer.

  • Page 6: Basic Operation

    USING THE DG-1000 WITH THE TRUEFLOW AIR HANDLER FLOW METER BASIC OPERATION MEASURING THE NORMAL SYSTEM OPERATING PRESSURE 1. Measure the Normal System Operating Pressure (NSOP) with the existing filter in place (replace if it is dirty) by installing a static pressure probe into the ductwork at one of the 3 locations listed below: •...
  • Page 7 USING THE DG-1000 WITH THE TRUEFLOW AIR HANDLER FLOW METER 12. Press where it says “SET NSOP”. Since the air handler is already on and the tubing is connected to the duct, the DG-1000 will display the static pressure in the duct work. This number is used to adjust the air flow readings of the system when the TrueFlow Meter is installed instead of the regular filter.

  • Page 8: Specifications

    USING THE DG-1000 WITH THE TRUEFLOW AIR HANDLER FLOW METER 5. Turn on the air handler. 6. Press on the PLATE area to select the correct size of plate that was installed in the filter slot. (You will see that there is additional selections for a filter grill. There is a different calibration value built into the DG-1000 to be used when the TrueFlow Meter is in a filter grill.
  • Page 9 Air Density Factors to Convert from Indicated Flow to Volumetric Flow Temp. of air through the Metering Plate (F) 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 0.933 0.95 0.968 0.986 1.005 1.023 1.043 1.062 1.083 1.104 1.125 0.943 0.961 0.978...
  • Page 10 FLOW RESISTANCE CORRECTION FACTORS IN PASCALS Normal System Operating Pressure in Pascals (NSOP) 10 1.00 1.10 1.18 1.26 1.34 1.41 1.48 1.55 1.61 1.67 1.73 1.79 1.84 1.90 1.95 2.00 2.05 2.10 2.14 2.19 2.24 12 0.91 1.00 1.08 1.15 1.22 1.29 1.35 1.41 1.47 1.53 1.58 1.63 1.68 1.73 1.78 1.83 1.87 1.91 1.96 2.00 2.04 14 0.85 0.93 1.00 1.07 1.13 1.20 1.25 1.31 1.36 1.41 1.46 1.51 1.56 1.60 1.65 1.69 1.73 1.77 1.81 1.85 1.89 16 0.79 0.87 0.94 1.00 1.06 1.12 1.17 1.22 1.27 1.32 1.37 1.41 1.46 1.50 1.54 1.58 1.62 1.66 1.70 1.73 1.77 18 0.75 0.82 0.88 0.94 1.00 1.05 1.11 1.15 1.20 1.25 1.29 1.33 1.37 1.41 1.45 1.49 1.53 1.56 1.60 1.63 1.67...
  • Page 11 FLOW RESISTANCE CORRECTION FACTORS IN INCHES OF WATER COLUMN Normal System Operating Pressure in In. H2O (NSOP) 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.04 1.00 1.12 1.22 1.32 1.41 1.50 1.58 1.66 1.73 1.80 1.87 1.94 2.00 2.06 2.12 2.18 2.24 2.29 2.35 2.40 2.45 0.05 0.89 1.00 1.10 1.18 1.26 1.34 1.41 1.48 1.55 1.61 1.67 1.73 1.79 1.84 1.90 1.95 2.00 2.05 2.10 2.14 2.19 0.06 0.82 0.91 1.00 1.08 1.15 1.22 1.29 1.35 1.41 1.47 1.53 1.58 1.63 1.68 1.73 1.78 1.83 1.87 1.91 1.96 2.00 0.07 0.76 0.85 0.93 1.00 1.07 1.13 1.20 1.25 1.31 1.36 1.41 1.46 1.51 1.56 1.60 1.65 1.69 1.73 1.77 1.81 1.85...
  • Page 12 The Energy Conservatory (TEC) offers a variety of Windows-based programs. These programs can be found and downloaded for free at software.energyconservatory.com. TEC also offers mobile apps for Apple and Android devices that can be found in the Apple App Store or the Google Play Store. Instructional Videos The Energy Conservatory (TEC) offers a variety of online instructional videos, including •...

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