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Carrier EconoMiser X Assembly, Installation, Setup

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EconoMi$er X
Factory ---Installed Option
Low Leak Economizer
for 2 Speed SAV™ (Staged Air Volume) Systems
Installation, Setup & Troubleshooting Supplement
This document is a supplemental installation instruction for the factory-installed EconoMi$er
X (low leak economizer) option. It is to be used with the base unit Installation Instructions for
48/50TC, 50TCQ, 48/50HC, and 50HCQ 2-Stage cooling units, sizes 08 - 30, as well as 48/50LC
sizes 04- 06. Units equipped with the EconoMi$er X option are identified by an indicator in the
unit's model number (see the unit's nameplate). Use Table 1 (on page 2) to identify whether
or not a given unit is equipped with the factory-installed EconoMi$er X.
NOTE: Read the entire instruction manual before starting the installation.

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  • Page 1: Table Of Contents

    EconoMi$er X Factory ---Installed Option Low Leak Economizer for 2 Speed SAV™ (Staged Air Volume) Systems Installation, Setup & Troubleshooting Supplement This document is a supplemental installation instruction for the factory-installed EconoMi$er X (low leak economizer) option. It is to be used with the base unit Installation Instructions for 48/50TC, 50TCQ, 48/50HC, and 50HCQ 2-Stage cooling units, sizes 08 –...

  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS CAUTION Improper installation, adjustment, alteration, service, CUT HAZARD maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury Failure to follow this caution may result in personal injury. or property damage. Consult a qualified installer, service Sheet metal parts may have sharp edges or burrs.

  • Page 3: Economi$Er X

    Position: 9 10 11 12 13 14 15 16 17 18 Example: Product Type Packaging Product Series Electrical Options G = 2-Speed Indoor Fan (VFD) Controller Heat Options Service Options Refrig. Systems Options Intake / Exhaust Options Cooling Tons A = None B = Temp Economizer w/ Baro Relief F = Enthalpy Econoizer w/ Baro Relief Sensor Options...

  • Page 4: User Interface

    Additional control capabilities include automatic detection of The Menus in display order are: new sensors and detection of sensor failure or loss of S STATUS communication. S SETPOINTS The W7220 control module includes an integral user S SYSTEM SETUP interface with keypad and LCD display that permits direct input of setpoint values and configurations and display of S ADVANCED SETUP status and alarms.
  • Page 5 Table 2 – Menu Structure Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS ECON AVAIL YES/NO ECONOMIZING AVAIALBLE 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 1...
  • Page 6 Table 2 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS EXH2 OUT ON/OFF EXHAUST STAGE 2 RELAY OUTPUT (cont) Output of AUX terminal; displays only if AUX = EXH2 = relay closed OFF = relay open ON/OFF...
  • Page 7 Table 2 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SYSTEM INSTALL 01/01/10 Display order = MM/DD/YY SETUP Setting order = DD, MM, then YY . UNITS DEG _F or _C Sets economizer controller in degrees Fahrenheit or Celsius.
  • Page 8 Table 2 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value CHECKOUT 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 9: Connections And Applications

    CONNECTIONS AND APPLICATIONS W7220 Economizer Module Wiring Use Fig. 3 and Tables 3 and 4 to locate the wiring terminals for the Economizer module. W7220 Controller Left Terminal Right Terminal Block Label Block Label C12014 Fig. 3 - - W7220 Economizer Module Terminal Connection Labels Table 3 –...

  • Page 10: Economizer Control Configurations

    20-K OHM PNO HH79NZ007 TSTAT W1 OAT* SD- O/B 20-K OHM OCCUPANCY --- TSTAT G PNO HH79NZ007 W7220 GROUND E- GND GRN/YEL S - BUS CONTROLlER POWER EXHAUST RELAY EXH 1 S - BUS IAQ - 2 - 10 SENSOR IAQ COM TSTAT Y2 Y2 - 1...

  • Page 11: Enthalpy Control Sensor Configuration

    enthalpy boundaries in the W7220. There are 5 boundaries When all of the OA conditions are above the selected (setpoints ES1 through ES5), which are defined by dry boundary, the conditions are not good to economize and bulb temperature, enthalpy and dew point. the mode is set to NO.

  • Page 12: Demand Control Ventilation

    Demand Control Ventilation should be set to an economizer position that brings in enough fresh air to remove contaminants and CO Demand Control Ventilation (DCV) function requires a generated by sources other than people; this airflow rate is space air CO sensor be connected to the W7220 designated Va.

  • Page 13: Economizer Occupancy Control

    To determine the damper setpoint position, perform the When determining VENTMIN setpoints, substitute the following procedure for each condition setpoint, with value for Va in place of Vbz in the formula. mechanical cooling OFF: DCV Setpoint — The SETPOINTS parameter DCV SET Calculate the appropriate supply air temperature using the defines the space CO level above which the DCV mode...

  • Page 14: Hardware

    HARDWARE The W7220 controller requires a valid signal from its SAT channel in order to function. If the SAT connection to the Actuators W7220 is lost, the W7220 will initiate an alarm condition immediately. No economizing operation will be permitted The Economizer X damper actuators are direct- - coupled until this alarm is cleared.
  • Page 15 (Discharge Air Temperature), depending on how its three Table 8 – Enthalpy Control Sensor Wiring Terminations position DIP switch is set. Terminal Type Description Use Fig. 10 and Table 8 to locate the wiring terminals for Label each Enthalpy Control sensor. S--- Bus Communications S--- BUS S--- BUS...

  • Page 16: Operating Sequences

    OPERATING SEQUENCES also energized. The supply fan motor shifts to High Speed. The Y2 demand is received at W7220 terminal Y2- - I. Outside air damper position will shift to MIN POS Staged Air Volume (2- - Speed) Fan Motor H.
  • Page 17 Table 11 – W7220 Input/Output without CO Sensor INPUTS OUTPUTS Ref: Occupancy DEMAND OUTSIDE AIR Mechanical Cooling Stage OCC Yes OCC No CONTROL Good to Y1--- I Y2--- 1 VENTILATION economize? Y1--- O/1ST Y2--- O/2ND Outside Air Damper Position 0--- v/Off 0--- v/Off MIN POS L Closed...

  • Page 18: Stage 3 Cooling

    As space temperature falls, the thermostat will remove its the supply fan speed is High, the DCV minimum call for second stage cooling; CTB terminal Y2 call is ventilation point is VENTMAX H. removed. The supply fan motor shifts back to Low Speed. As the CO level in the space increases above the setpoint The W7220 input Y2- - I is also removed;...

  • Page 19: Checkout

    For this application with the 2- - speed supply fan option, CAUTION note that parameters EQUIPMENT, AUX2I and FAN TYPE have required settings. Check that these parameters EQUIPMENT DAMAGE HAZARD are set at these required settings: Failure to follow this caution may result in equipment EQUIPMENT must be CONV damage.

  • Page 20: Clearing Alarms

    Clearing Alarms If one or more alarms are present and there has been no keypad activity for at least 5 minutes, the Alarms menu Once the alarm has been identified and the cause has been displays and cycles through the active alarms. You can removed (e.g.
  • Page 21 C11549 Fig. 11 - - Typical Economizer X Wiring Diagram Downloaded from ManualsNet.com search engine...

  • Page 22: Control Set Point And Configuration Log

    CONTROL SET POINT AND CONFIGURATION LOG Project Name/Location: Model Number: Serial Number: Date: Technician Menu Tables: 1. SYSTEM SETUP 2. ADVANCED SETUP 3. SETPOINTS Menu 1: System Setup Parameter Project Parameter Default Parameter Notes Value Range and Increment Value INSTALL 01/01/10 Display order = MM/DD/YY Setting order = DD, MM, then YY...
  • Page 23 Menu 2: Advanced Setup Parameter Project Parameter Parameter Default Notes Value Range and Increment Value MA LO SET 45_F (7_C) 35 to 55_F; SUPPLY AIR TEMPERATRUE LOW LIMIT (2 to 13_C) Temperature to achieve Freeze Protection (close damper and alarm if incremented by 1_ temperature at SAT location falls below setup value) FREEZE POS...
  • Page 24 Only used when AUX1---O is set to EHX2. Catalog No: LLECON---02SI Copyright 2012 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 03/12 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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