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INSTALLATION INSTRUCTIONS
Full Flow Low Leakage Economizers
with Exhaust for Building Applications
Available with Enthalpy or Dry Bulb Outdoor Control
ECON-DB-2, ECON-DB-3, ECON-WD-2 & ECON-WD-3
Use for Enthalpy or Dry Bulb Installations
For Use with 1-1/2 Through 3 Ton
NOTE:
These instructions are written to cover field-installed economizers, but are also
included with factory-installed economizers. For factory-installed economizers,
all portions addressing "installation" are for reference only.
BMC, Inc.
Bryan, Ohio 43506
Models:
Factory-Installed Vent Option
Wall Mount Air Conditioners
and Heat Pumps
Manual :
2100-702D
Supersedes:
2100-702C
Date:
11-10-20
Page
1 of 29
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Summary of Contents for BMC ECON-DB-2
- Page 1 Full Flow Low Leakage Economizers with Exhaust for Building Applications Available with Enthalpy or Dry Bulb Outdoor Control Models: ECON-DB-2, ECON-DB-3, ECON-WD-2 & ECON-WD-3 Factory-Installed Vent Option Use for Enthalpy or Dry Bulb Installations For Use with 1-1/2 Through 3 Ton...
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Page 2: Table Of Contents
CONTENTS GENERAL ..............3 FIGURES Nomenclature ............. 3 Figure 1 Wall-Mount Unit Access Panels ..... 5 General Information ..........3 Figure 2 Condenser Exhaust Plate with Screen..5 Field-Supplied Tools Needed ........ 3 Figure 3 Filter and Filter Brackets ...... 6 Unpacking ............ -
Page 3: General
• Multimeter Model For Use with the Following Units Unpacking W/J17A W/J18H W/J17L ECON-DB-2 Upon receipt of the equipment, be sure to compare the W/J18A W/J24H W/J18L ECON-WD-2 W/J24A W/J24L model number found on the shipping label with the... -
Page 4: Installation Of Field-Installed Economizer
INSTALLATION OF FIELD-INSTALLED ECONOMIZER Installation Preparing Unit for Economizer Installation 1. Disconnect power to unit. 2. Unpack the economizer assembly, which WARNI NG includes the integral economizer with attached electrical harness, mixed air sensor, body panels, miscellaneous hardware and installation instructions. Electrical shock hazard. -
Page 5: Figure 1 Wall-Mount Unit Access Panels
FIGURE 1 Wall-Mount Unit Access Panels FILTER BRACKETS BLOWER ACCESS PANEL CIRCUIT BREAKER ACCESS DOOR FILTER ACCESS INNER CONTROL PANEL PANEL DOOR (THIS PANEL IS DISCARDED) CONTROL PANEL DOOR FILTER CONDENSER EXHAUST PLATE (DISCARD AND VENTILATION ACCESS PANEL SAVE SCREWS) (THIS PANEL IS DISCARDED) MIS-3619 A FIGURE 2... -
Page 6: Figure 3 Filter And Filter Brackets
FIGURE 3 Filter and Filter Brackets THERMISTOR LOCATION LEFT FILTER BRACKET FILTER REFERENCE ANGLE MOUNTING HOLE LOCATED BEHIND THE C. BREAKER OFFSET PLATE FOR THE 30 RIGHT RIGHT FILTER FILTER BRACKET BRACKET 30° REFERENCE ANGLE MIS-3621 Manual 2100-702D Page 6 of 29... -
Page 7: Fill Plate Installation
FIGURE 4 Filter Bracket and Filter Bracket Fill Plate Installation INSTALL FILTER BRACKET FILL PLATE WITH (2) SCREWS (ONLY FOR 2-3 TON UNITS) RIGHT HAND UNIT LEFT HAND UNIT LONG FILTER (4) REGULAR SCREWS BRACKET (4) REGULAR SCREWS LONG FILTER SHORT FILTER BRACKET BRACKET... -
Page 8: Outdoor Air Sensor Installation
Outdoor Air Sensor Installation 3. Route the wire harness across the back of the unit and secure with two wire ties (provided). Push 1. Remove and save both side grilles and screws. harness up through the grommet in the bottom of 2. -
Page 9: Figure 7 Mixed Air Temp Sensor Installation
4. Route the two orange wires along refrigerant lines 6. Run black and red wire from economizer upper behind the filter bracket (if applicable) to terminate 12-pin wiring harness through grommet and other at the blower partition (see Figure 7). bushing into the control panel and connect to the black and red wire sensor wires (see Figure 6). -
Page 10: Economizer Checkout
unit and mount economizer hood to unit with four 3. Complete economizer checkout using economizer (4) screws. control touchpad (see CHECKOUT on page 17). 9. Connect vent option front to vent hood door (see 4. After confirming economizer operation, attach the Figure 8) using ten (10) screws (supplied). -
Page 11: Figure 9 Programmable Thermostat Connections For Air Conditioner With Economizer
FIGURE 9 Programmable Thermostat Connections for Air Conditioner with Economizer Completestat Model #CS9B-THOA or Model #CS9BE-THOA 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 10 Programmable Thermostat Connections For Heat Pump With Economizer
FIGURE 10 Programmable Thermostat Connections for Heat Pump with Economizer Completestat Model #CS9B-THOA or Model #CS9BE-THOA 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 13: Economizer
FIGURE 11 Non-Programmable Thermostat Connections for Air Conditioner with Economizer Units With Dehumidification 8403-038 Mechanical Humidistat 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 CO2 OUT TEMP-OUT Unit Low B/W1 Voltage... - Page 14 FIGURE 12 Non-Programmable Thermostat Connections for Heat Pump with Economizer Units With Dehumidification 8403-038 Mechanical Humidistat 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 CO2 OUT TEMP-OUT Unit Low B/W1 Voltage...
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Page 15: Start-Up/Checkout Procedures
START-UP/CHECKOUT PROCEDURES JADE™ Economizer Controller The installing contractor can easily access the JADE™ programming by the integral keypad and LCD display. W7220 controller offers unparalleled flexibility and There are six (6) basic MENU categories to navigate: expansion in a dependable and solid electronic platform. -
Page 16: Table 2 System Setup Menu Levels
TABLE 2 TABLE 3 Advanced Setup Menu Levels System Setup Menu Levels Default Default Menu Level Range Notes Menu Level Range Notes Value Value Display Order = MM/DD/YY Temp to activate freeze INSTALL 01/01/10 45°F 35-55° Setting Order = DD/MM/YY protection —... -
Page 17: Table 4 Setpoints Menu Levels
TABLE 4 NOTE: CHECKOUT functions bypass the normal 5-minute delay for compressor protection. Be sure to Setpoints Menu Levels allow for enough time to pass between tests so the Default compressor is not damaged from extreme short-cycling. Menu Level Range Notes Value Mixed Air Temperature setpoint... -
Page 18: Table 6 Status Menu Levels
ALARM(S): from the main screen, press the SCROLL TABLE 6 (UP/DOWN) BUTTONS to navigate through the six (6) Status Menu Levels basic menu items to the ALARM(S) menu. Default Menu Level Notes – Push the SELECT (ENTER) BUTTON to choose the Value ALARM(S) menu. -
Page 19: Enthalpy Settings
Enthalpy Settings If economizer is enthalpy-based and was shipped with the temp/humidity sensor, the economizer must be programmed for the specific enthalpy curve boundary desired for “free” outdoor cooling. The available enthalpy boundaries are all subject to specific OA temperature, OA humidity and OA dew points. If all of the OA conditions are below the specific points outlined in each boundary, the conditions are good to economize and economizer mode is set to “YES”. -
Page 20: Economizer Sequence Of Operation
FIGURE 14 Economizer Sequence of Operation 100% Outside Airflow Path Condition – Cool/Dry OA Conditions • 1 Stage Cooling closes and sends signal to JADE™ control. Since the air temperature outside is cooler than the preset DRYBULB SET setting, SUPPLY AIR or is below the ENTH CURVE boundary in the SETPOINTS menu, the actuator will power the economizer damper to “economizer”... - Page 21 FIGURE 16 100% Closed Loop Airflow Path SUPPLY AIR COOLING COIL AIR FILTER MIST ELIMINATOR 100% RETURN AIR DAMPER BLADE CONDENSER AIR CONDENSER COIL MIS-3614 Manual 2100-702D Page 21 of 29...
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Page 22: Economizer Operation For Single Stage
Economizer Operation for Single Stage: THERMOSTAT/CONTROL CALLS FOR 1 STAGE COOLING OA CONDITIONS OA CONDITIONS BELOW DRYBULB ABOVE DRYBULB OR ENTHALPY OR ENTHALPY CURVE SETPOINT CURVE SETPOINTS MECHANICAL ECONOMIZER ONLY OPERATION, MAT COOLING BEGINS, ECON. DAMPER SENSOR ATTEMPTS CLOSED OR MIN. TO MAINTAIN POSITION PRESET DISCHARGE... -
Page 23: Balanced Climate Mode - S, Y And Z Option Economizer Sequence Of Operation
Balanced Climate Mode – S, Y and Z Option Call for cooling and ECONOMIZER IS AVAILABLE (due Economizer Sequence of Operation to outdoor conditions): Balanced Climate can be used for duct free and ducted Two stage cooling thermostat is required and connector applications below 0.2"... -
Page 24: Economizer Operation - Balanced Climate Mode
Economizer Operation – Balanced Climate Mode Connector disconnected from JADE controller (see wiring diagrams on pages 28 and 29) THERMOSTAT/CONTROL CALLS FOR 1ST STAGE COOLING OA CONDITIONS OA CONDITIONS ABOVE DRYBULB BELOW DRYBULB OR ENTHALPY OR ENTHALPY CURVE SETPOINTS CURVE SETPOINT MECHANICAL COOLING BEGINS, ECONOMIZER ONLY OPERATION, FAN OPERATES IN BALANCED CLIMATE SPEED,... -
Page 25: Bard Part #8403-067 Co
FIGURE 17 Sensor Default and Final Settings Bard Part #8403-067 CO Controller PRESS UP AND DOWN ARROWS TO ENTER CONFIGURATION MODE USE ARROWS TO SELECT SETTING. PUSH MIDDLE BUTTON TO CHANGE. CONTROLLER WILL SHOW SET. NOTE: MENU JUMPER MUST JUMPERS MUST BE BE SET TO "ON"... -
Page 26: Graphs
GRAPH 1 W/J18 Ventilation Delivery GRAPH 2 W/J24 Ventilation Delivery Manual 2100-702D Page 26 of 29... - Page 27 GRAPH 3 W/J30 Ventilation Delivery GRAPH 4 W/J36 Ventilation Delivery Manual 2100-702D Page 27 of 29...
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Page 28: Figure 18 Wiring Diagram - Enthalpy Sensor
FIGURE 18 Wiring Diagram − Enthalpy Sensor 12 PIN PLUG 12 PIN PLUG MALE FEMALE DAMPER MOTOR BLACK BROWN BROWN OUTSIDE AIR BLACK ENTHALPY SENSOR ORANGE ORANGE MIXED AIR ORANGE TEMPERATURE ORANGE SENSOR MAT + BLUE MAT - AUX2-I CLOSE DAMPER INPUT OAT + BROWN/WHITE OCCUPIED SIGNAL INPUT... - Page 29 FIGURE 19 Wiring Diagram − Temperature Only Sensor 12 PIN PLUG 12 PIN PLUG MALE FEMALE DAMPER MOTOR BLACK BROWN BROWN OUTSIDE AIR BLACK TEMPERATURE SENSOR ORANGE ORANGE MIXED AIR ORANGE ORANGE TEMPERATURE SENSOR MAT + MAT - AUX2-I BLUE CLOSE DAMPER INPUT OAT + BROWN/WHITE...
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