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Bard ECON-NC5 Installation Instructions Manual

Full flow economizer with exhaust for building applications
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INSTALLATION INSTRUCTIONS

with Exhaust for Building Applications
(To Be Used with Field-Installed DDC Controls)
For Use with Bard Single Stage Wall Mount
Air Conditioner and Heat Pump Models:
W42AC, W48AC, W60AC, W72AC
Full Flow Economizer
Model: ECON-NC5
W42HC, W48HC, W60HC
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual:
2100-708A
Supersedes: 2100-708
Date:
9-16-19
Page
1 of 17

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Summary of Contents for Bard ECON-NC5

  • Page 1: Installation Instructions

    Full Flow Economizer with Exhaust for Building Applications (To Be Used with Field-Installed DDC Controls) Model: ECON-NC5 For Use with Bard Single Stage Wall Mount Air Conditioner and Heat Pump Models: W42AC, W48AC, W60AC, W72AC W42HC, W48HC, W60HC Bard Manufacturing Company, Inc.

  • Page 2: Table Of Contents

    Figure 19 Install Mist Filters ........ 8 Figure 20 Install Bug Screen and Gaskets ..... 9 Figure 21 Programmable Thermostat Connections for ECON-NC5 with Air Conditioners ..10 Figure 22 Programmable Thermostat Connections for ECON-NC5 with Heat Pumps ..11...

  • Page 3: General Information

    (1) 3000-1627 wire assembly When installed in the models listed on the front page, (2) 7003-084 mist filters the ECON-NC5 provides built-in exhaust provisions. (1) 7003-083 exhaust bug screen When the damper blade opens to bring fresh air in, the (2) 1913-002-0808 8-1/2"...

  • Page 4: Figure 1 Disconnect Power

    INSTALLATION OF FIELD-INSTALLED ECON-NC5 Basic Installation Remove both side grilles (see FIgure 2). FIGURE 2 WARNING Remove Side Grilles Electrical shock hazard. Disconnect remote electrical power supply or supplies before servicing. Failure to do so could result in electric shock or death.

  • Page 5: Figure 4 Remove Blank Off Plates (Both Sides)

    Remove blank off plates (both sides) and discard (see Remove both air filters and the low voltage inner control panel cover (see Figure 6). Remove left filter first then Figure 4). Retain all screws for use with new vent. slide right filter to the left to remove. FIGURE 4 Remove Blank Off Plates (Both Sides) FIGURE 6...

  • Page 6: Route Sensor Wires And Fasten To Motor Mount

    Route the sensor wires over the top of the outdoor fan Install the 3000-1627 wire harness: The 4 pin connector motor and up through the condenser partition bushing. snaps into the back of the control panel for the Fasten the wires to the motor mount as shown in Figure economizer to plug into, the 12 pin connector plugs into 8 using (4) 7950-004 ladder ties provided.

  • Page 7: Figure 7 Install Outdoor Air Sensor

    Pull the excess sensor wire down into the exhaust area When the economizer is fully installed, the control plug should be centered in the plug access opening on the and fasten with two (2) 7950-004 ladder ties. front panel of the economizer as shown in Figure 14. FIGURE 12 FIGURE 14 Pull Wire into Exhaust Area and Fasten with Ties...

  • Page 8: Figure 16 Release The Exhaust Blade

    The ECON-NC5 exhaust blade is fixed in the shipping Install the 539-405 intake sealing frame and the 543- position by the latch located on the bottom of the blade 223 lower block off plates (both sides) as shown in Figure (see Figure 16).

  • Page 9: Blade Adjustment For Desired Ventilation Air

    Bend the two (2) sheet metal tabs in the condenser partition up to hold the bottom of the bug screen in place. Install two (2) 1913-002-0808 8-1/2" foam gaskets to sides of cabinet (see Figure 20). Install the 7003-083 exhaust bug screen. Re-install front lower (condenser) grille.

  • Page 10: Figure 21 Programmable Thermostat Connections For Econ-Nc5 With Air Conditioners

    FIGURE 21 Programmable Thermostat Connections for ECON-NC5 with Air Conditioners Completestat Model #CS9B-THO or Model #CS9BE-THO W1/E Thermostat W1/E YO/D Bard #8403-060 Optional CO2 Controller Bard Part #8403-067 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed.

  • Page 11: Figure 22 Programmable Thermostat Connections For Econ-Nc5 With Heat Pumps

    FIGURE 22 Programmable Thermostat Connections for ECON-NC5 with Heat Pumps Completestat Model #CS9B-THO or Model #CS9BE-THO W1/E Thermostat YO/D W1/E Bard #8403-060 Optional CO2 Controller Bard Part #8403-067 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed.

  • Page 12: Figure 23 Non-Programmable Thermostat Connections For Econ-Nc5 With Air Conditioners

    FIGURE 23 Non-Programmable Thermostat Connections for ECON-NC5 with Air Conditioners Units With Dehumidification 8403-038 8403-057 Mechanical Humidistat (TH311OD1040) or T4 Pro 8403-089 8403-058 (TH522OD1151) 8403-059 8403-047 (TH522OD1219/U) Electronic Humidistat or T6 Pro 8403-090 Optional CO2 Controller Bard Part #8403-067 24VAC...

  • Page 13: Figure 24 Non-Programmable Thermostat Connections For Econ-Nc5 With Heat Pumps

    FIGURE 24 Non-Programmable Thermostat Connections for ECON-NC5 with Heat Pumps Units With Dehumidification 8403-038 8403-057 Mechanical Humidistat (TH311OD1040) or T4 Pro 8403-089 8403-058 (TH522OD1151) 8403-059 8403-047 (TH522OD1219/U) Electronic Humidistat or T6 Pro 8403-090 Optional CO2 Controller Bard Part #8403-067 24VAC...
  • Page 14 GRAPH 1 W42AC ECON-E & WD Ventilation Delivery GRAPH 2 W48AC ECON-E & WD Ventilation Delivery Manual 2100-708A Page 14 of 17...
  • Page 15 GRAPH 3 W60AC ECON-E & WD Ventilation Delivery GRAPH 4 W72AC ECON-E & WD Ventilation Delivery Manual 2100-708A Page 15 of 17...

  • Page 16: Figure 25 Call For Ventilation With Or Without Compressor Operation

    FIGURE 25 Call for Ventilation With or Without Compressor Operation FIGURE 26 Call for Compressor or Fan Only with Ventilation Off Manual 2100-708A Page 16 of 17...

  • Page 17: Figure 27 Wiring Diagram

    FIGURE 27 Wiring Diagram 12 PIN VENT PLUG 24V COMMON BLACK/WHITE 4-Pin Plug BLACK Damper RED/WHITE 24V INPUT SIGNAL Motor WHITE PURPLE GREEN YELLOW 0-10V DC INPUT SIGNAL BROWN/WHITE ORANGE 10K OD 10K OHM TEMPERATURE OD TEMP. SENSOR THERMISTOR ORANGE NO CONTROL ECONOMIZER WIRING DIAGRAM 4056-247 12 PIN...

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