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MicroMetl ECD-SRTCA-D2 Install Manual

Economizer
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Economizer
ECD-SRTCA-D2
Install Guide
Foremost HVAC Accessory Manufacturer

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Summary of Contents for MicroMetl ECD-SRTCA-D2

  • Page 1 Economizer ECD-SRTCA-D2 Install Guide Foremost HVAC Accessory Manufacturer...
  • Page 2 Table of Contents Topic Topic Page Number Page Number General General Install Instructions...

  • Page 3: Table Of Contents

    Small Rooftop Units MicroMetl 3 to 12.5 Tons (48/50LC 14 Not Included) Accessory Ultra Low Leak Vertical Economizer Accessory Since 1965 Installation Instructions Part No: ECD-SRT12CA-D2*H, ECD-SRT34CA-D2*H and ECD-SRT05CA-D2*H CONTENTS WARNING Safety Consideration......1 ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death.

  • Page 4: Usage Chart, Package Contents, Sensors

    MicroMetl Since 1965 Table 1 - Carrier Usage Chart Table 4 - Package Contents ECONOMIZER ECONOMIZER CARRIER MODEL NUMBER CONTENTS PART NUMBER PART NUMBER Small Cabinet Economizer Damper Assembly with Actuator and Outside Air Sensor 48/50HC, LC 04-06 Dry Bulb OA Sensor =...

  • Page 5: Accessories And Compliance

    MicroMetl Since 1965 INSTALLATION ACCESSORIES LIST - The Economizer system has several Note: If installing economizer on 48/50LC 07-12 units, see field-installed accessories available to optimize performance. Refer special section beginning on page 10. to Table 6 for authorized parts and power exhaust descriptions.
  • Page 6 MicroMetl Since 1965 Step 9: Remove the indoor blower access panel and the panel(s) covering the unit control box. See Figure 6. Unit Filter Rack Center Post Unit Control Box Panel(s) Economizer Hold Down Tab Economizer Unit Base Economizer Rear Flange Indoor Blower Fig.
  • Page 7 MicroMetl Since 1965 10-Pin Female Plug from Controller Central Terminal Board White Wire Figure 10 – Connect 10-Pin Jade Plug to Central Terminal Board Step 14: Connect the White wire from the Jade controller harness to the W1 terminal on the CTB. See Figures 10 and 23.
  • Page 8 MicroMetl Since 1965 9962-0407-SAOEXT Harness (See note below) Control Indoor Blower Section Figure 14 – Route 9962-0407-SAOEXT Harness to Indoor Blower Section (See note below) Figure 12 – Connect Ground Wire From Controller (Some control box configurations may differ) Step 17: Locate the 9962-0407-SAOEXT harness (with 4-pin Step 19: Screw the 9901-2021 mixed air (MAT) sensor (Honeywell female plug) provided in the economizer hardware kit.
  • Page 9 MicroMetl Since 1965 Step 20: Connect the pink and violet wires from the 4-wire 9962-0407-SAOEXT harness to the pink and violet terminals in the wire bundle in the indoor blower section. See Figures 16 and 23. See note Pink and...

  • Page 10: Economizer Performance Charts

    MicroMetl Since 1965 6000 5000 Filter Door 4000 ECD-SRT12CA-D2*H ECD-SRT34CA-D2*H 3000 ECD-SRT05CA-D2*H 2000 1000 RETURN DUCT STATIC PRESSURE DROP (in. wg) Economizer Hood Figure 22 – Return Air Pressure Drop Figure 20 – Install Economizer Hood and Unit Filter Access Door Step 25: After powering controller, program the Jade W7220 controller per the instructions to follow.

  • Page 11: Economizer Wiring Diagram (Non Lc 07-12)

    MicroMetl Since 1965 Figure 23 – Typical Economizer Wiring Diagram for 1 or 2 Speed Units (Not for 48/50LC 07-12 Units)

  • Page 12: 48/50Lc 07-12 Instructions And Diagram

    MicroMetl Since 1965 Instructions for 48/50LC 07-12 Units Only Important: This page is for economizer installation instructions on 48/50LC 07-12 units only. Step LC1. Follow steps 1 through 10 earlier in these instructions. Note: The complete 4-wire 9962-0407-SAOEXT harness provided with the economizer will also NOT be used on the 48/50LC07-12 Step LC2.
  • Page 13 MicroMetl Since 1965 Instructions for 48/50LC 07-12 Units Only Important: This page is for economizer installation instructions on 48/50LC 07-12 units only. Step LC6. The connectors on the left side of Figure 25 on the 48LCHSRADH—A00 harness attach to the unit’s CSC board.
  • Page 14 MicroMetl Since 1965 Instructions for 48/50LC 07-12 Units Only Important: This page is for economizer installation instructions on 48/50LC 07-12 units only. Figure 28 - Typical Wiring Diagram For 48/50LC 07-12 Units NOTES: Harness shown in bold is 48LCHSRADH--A00 harness, which...

  • Page 15: Enthalpy Accessory

    MicroMetl Since 1965 9901-2022 SINGLE OUTSIDE AIR ENTHALPY There are (5) enthalpy boundaries (setpoints ES1 thru ES5), which are defined by dry bulb temperature, enthalpy, and dew point. ES3 SENSOR is the default setting. Table 7 shows the High Limit Curves for each When using the 9901-2022 (Honeywell C7400S) enthalpy sensor setting.

  • Page 16: Differential Return Sensor Accessory

    MicroMetl Since 1965 INSTALLING DIFFERENTIAL RETURN AIR Table 9 – California Title 24 Regional High Limit SENSOR Dry Bulb Temperature Settings The 9901-2022-DIFF JC2 differential return sensor kit must be REQUIRED HIGH LIMIT field mounted in the system’s return duct work. The kit includes a...

  • Page 17: Remote Fault Detection & Diagnostics

    MicroMetl Since 1965 REMOTE (DOWNSTAIRS) MONITORING OF CONTROLLER’S FAULT DETECTION AND DIAGNOSTICS Many codes including IECC, Title 24, and ASHRAE 90.1 require that the economizer’s faults be accessible by operating or service personal, or annunciated locally on zone thermostat. To setup remote monitoring on the controller, under SYSTEM SETUP, AUX1-OUT must be set to SYS.

  • Page 18: Economizer Jade Controller

    MicroMetl Since 1965 General Jade W7220 Controller and Sensor Information W7220 ECONOMIZER Using the Keypad with Settings and Parameters The economizer controller used on electro mechanical units is the To use the keypad when working with Setpoints, System Setup Honeywell W7220 which is to be located in the RTU base unit’s Advanced Settings, Checkout Tests and Alarms: Control Box.

  • Page 19: Programming Jade W7220 Controller

    MicroMetl Since 1965 PROGRAMMING THE JADE W7220 ‒ MIN POS: The minimum position allows for ventilation even when not in the free-cooling mode. If you have a single speed CONTROLLER unit there will be only one minimum position setting. The The next several pages detail the different status displays, default is 2.8 volts, but the range is 2-10Vdc.
  • Page 20 MicroMetl Since 1965 Table 11 ─ Menu Structure* Parameter Parameter Menu Parameter Default Notes Range and Increment Value ECON AVAIL YES/NO ECONOMIZING AVAILABLE YES = economizing available; the system can use outside air for free cooling when required ECONOMIZING YES/NO ECONOMIZING ACTIVE YES = Outside air being used for 1st stage cooling.
  • Page 21 MicroMetl Since 1965 Table 11 ─ Menu Structure (cont)* Parameter Parameter Menu Parameter Default Range and Notes Value Increment EXH2 OUT ON/OFF EXHAUST STAGE 2 RELAY OUTPUT Output of AUX terminal; displays only if AUX = EXH2 ON = relay closed...
  • Page 22 MicroMetl Since 1965 Table 11 ─ Menu Structure (cont)* Parameter Parameter Menu Parameter Default Notes Range and Increment Value INSTALL 01/01/10 Display order = MM/DD/YY Setting order = DD, MM, then YY. UNITS DEG °F or °C Sets economizer controller in degrees Fahrenheit or Celsius.

  • Page 23: Checkout Tests & Controller Terminals

    MicroMetl Since 1965 Table 11 ─ Menu Structure (cont)* Parameter Parameter Menu Parameter Default Notes Range and Increment Value DAMPER VMIN .HS Positions OA damper to VMIN High Speed position DAMPER VMAX .HS Positions OA damper to VMAX High Speed position DAMPER OPEN Positions OA damper to the full open position.
  • Page 24 MicroMetl Since 1965 W7220 ECONOMIZER MODULE WIRING Table 13 - Economizer Module - Right Hand Terminal Blocks Use tables 12 and 13 to locate the wiring terminals for the economizer module. Label Type Description Table 12 - Economizer Module -...

  • Page 25: Start-Up And Operation

    MicroMetl Since 1965 START-UP AND OPERATION Should 100% outside air not be capable of satisfying the space temperature, space temperature will rise until Y2 is called for. The Cooling with Economizer — For Occupied mode operation of economizer control will call for compressor operation. Dampers will...

  • Page 26: Troubleshooting

    905 Southern Way Suite 300 Indianapolis, IN 46226 Longview, Texas 75602 Sparks, Nevada 89431 Manufacturer reserves the right to discontinue, or change at any time, specifications, designs and prices without notice and without incurring obligations. Copyright MicroMetl Corporation 2018 All rights reserved.

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