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Installation, Setup & Troubleshooting Supplement

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Installation, Setup & Troubleshooting Supplement EconoMi$er X F a c t o r y --- I n s t a l l e d O p t i o n Low Leak Economizer for 2 Speed SAV (Staged Air Volume) Systems Installation, Setup & Troubleshooting Supplement This document is a supplemental installation instruction for the factory-installed EconoMi$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. 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. TABLE OF CONTENTS SAFETY CONSIDERATIONS SAFETY CONSIDERATIONS.................... 1 Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical GENERAL.................................... 2 shock or other conditions which may cause personal injury Identifying Factory Option...................... 2 or property damage. Consult a qualified installer, service EconoMi$er X................................ 3 agency, or your distributor or branch for information or assistance. The qualified installer or agency must use W7220 Economizer Controller................... 3 factory--authorized kits or accessories when modifying this User Interface................................ 3 product. Refer to the individual instructions packaged with Menu Structure............................... 3 the kits or accessories when installing. Checkout Tests............................... 7 Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and SETUP AND CONFIGURATION................. 7 have a fire extinguisher available. Read these instructions W7220 Economizer Module Wiring.............. 7 thoroughly and follow all warnings or cautions attached to Time--Out and Screen Saver..................... 7 the unit. Consult local building codes and appropriate national electrical codes (in USA, ANSI/NFPA70, National Enthalpy Settings............................. 8 Electrical Code (NEC); in Canada, CSA C22.1) for special Enthalpy Control Sensor Configuration............ 8 requirements. Install Outside Air Hood — Factory Option........ 9 It is important to recognize safety information. This is the 15to25TonHorizontalReturnApplicationwith .... safety--alert symbol . When you see this symbol on the Barometric Relief............................ 9 unit and in instructions or manuals, be alert to the OPERATION................................. 10 potential for personal injury. Cooling, Unit with EconoMi$er X............... 10 Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the Heating, Unit with EconoMi$er X............... 10 safety--alert symbol. Demand Control Ventilation.................. 10 DANGER identifies the most serious hazards which will result TROUBLESHOOTING......................... 11 in severe personal injury or death. WARNING signifies hazards Power Loss (Outage or Brownout)............... 11 which could result in personal injury or death. Alarms..................................... 11 CAUTION is used to identify unsafe practices, which Clearing Alarms............................. 11 may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in GENERAL enhanced installation, reliability, or operation. Identifying Factory Option ! WARNING NOTE: This supplement only applies to units that meet the criteria detailed in Table 1. If the unit does not meet ELECTRICAL SHOCK HAZARD that criteria, discard this document. Failure to follow this warning could cause personal injury or death. Table 1 – Model--Size / EconoMi$er X Option Indicator Before performing service or maintenance operations Position in EconoMi$er FIOP Model / Sizes on unit, always turn off main power switch to unit and Model Number Indicator install lock(s) and lockout tag(s). Unit may have more 48/50TC / 08---16 15 UorW than one power switch. Ensure electrical service to rooftop unit agrees with voltage an amperage listed on 48/50TC / 17---30 15 U, V, W or X the unit rating plate. 50TCQ / 08---14 15 UorW 50TCQ / 17---24 15 U, V, W or X 48/50HC / 08---14 15 UorW ! CAUTION 48/50HC / 17---28 15 U, V, W or X 50HCQ / 08---12 15 UorW CUT HAZARD Failure to follow this caution may result in personal injury. NOTE: See Fig. 1 for an example of typical Model LLECON--01SI Number Nomenclature. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety In addition to criteria in Table 1, all units equipped with a glasses and gloves when handling parts and servicing factory--installed EconoMi$er X display a 6 in the 14th air conditioning equipment. position of the model number indicating the low leak economizer controller. These units also display a G in the 17th position of the model number to indicate that the unit is equipped with the factory--installed VFD (Variable Frequency Drive) option for 2--speed indoor fan control. The VFD option is required for units equipped with EconoMi$er X. For detailed information on the VFD see the Variable Frequency Drive (VFD) Installation, Setup & Troubleshooting Supplement. Position:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Example: 48HCDD24A3A5-6U0 G 0 Product Type Packaging Product Series Electrical Options G = 2-Speed Indoor Fan (VFD) Controller Heat Options Service Options Refrig. Systems Options Intake / Exhaust Options Cooling Tons A = None B = Temp Economizer w/ Baro Relief Sensor Options F = Enthalpy Econoizer w/ Baro Relief K = 2 Position Damper U = Temp Low Leak Economizer w/ Baro Relief Indoor Fan Options & Air Flow Configuraitons V = Temp Low Leak Economizer w/ PE (cent) W = Enthalpy Low Leak Economizer Coil Options (RTPF) (Outdoor - Indoor - Hail Guard) w/ Baro Relief X = Enthalpy Low Leak Economizer w/ PE (cent) Voltage Base Unit Controls 0 = Base Electromechanical Controls Design Revision 1 = PremierLink Controller 2 = RTU Open Multi-Protocol Controller 6 = Electromechanical Controls for Low Leak Economizer Only C11547 Fig. 1 -- Model Number Nomenclature Example 2 EconoMi$er X Using the Keypad with Menus EconoMi$er X is a low leak economizer system which is To use the keypad when working with menus: available for 2--stage cooling units equipped with the SAV 2--speed Variable Frequency Drive (VFD) system. S Press the (Up arrow) button to move to the previous The factory--installed option consist of the following: menu. S S Low leak economizer assembly Press the (Down arrow) button to move to the next menu. S W7220 economizer controller S Press the (Enter) button to display the first item in S 20K dry bulb temperature control sensor the currently displayed menu. S Enthalpy control sensor (enthalpy economizer only) S Press the (Menu Up/Exit) button to exit a menu’s W7220 Economizer Controller item and return to the list of menus. The economizer controller used on electro mechanical units is a Honeywell W7220 which is located in the RTU base Using the Keypad with Settings and Parameters unit’s Control Box. See the Installation Instructions for your base unit for the location of the Control Box access panel. To use the keypad when working with Setpoints, System and Advanced Settings, Checkout tests and Alarms: The W7220 controller provide the following: 1. Navigate to the desired menu. S 2--line LCD interface screen for setup, configuration 2. Press the (Enter) button to display the first item in LLECON--01SI and troubleshooting. the currently displayed menu. S On--board fault detection and diagnostics 3. Use the and buttons to scroll to the desired S Sensor failure loss of communications identification parameter. 4. Press the (Enter) button to display the value of the S Automatic sensor detection currently displayed item. S Capabilites for use with multiple--speed indoor fan 5. Press the button to increase (change) the displayed systems parameter value. 6. Press the button to decrease (change) the displayed User Interface parameter value. The user interface consists of an LCD display and a NOTE: When values are displayed, pressing and 4--button keypad on the front of the economizer controller. holding the or button causes the display to automatically increment. 7. Press the (Enter) button to accept the displayed value and store it in nonvolatile RAM. 8. “CHANGE STORED” displays. 9. Press the (Enter) button to return to the current menu parameter. 2 LINE 10. Press the (MenuUp/Exit)buttontoreturntothe LCD previous menu. Menu Structure Table 2 illustrates the complete hierarchy of menus and parameters for the Economizer X system. MENU UP SELECT (EXIT) SCROLL (ENTER) The Menus in display order are: BUTTON UP/DOWN BUTTON BUTTONS S STATUS C11548 S SETPOINTS Fig. 2 -- W7220 Controller S SYSTEM SETUP S ADVANCED SETUP Keypad S CHECKOUT The four navigation buttons (see Fig. 2) are used to scroll S ALARMS through the menus and menu items, select menu items, and to change parameter and configuration settings. 3 IMPORTANT: Table 2 illustrates the complete hierarchy. your menu parameters may be different depending on your configuration. For example if you do not have a DCV (CO2) sensor, then none of the DCV parameters appear. Table 2 – Menu Structure a Parameter Parameter Menu Parameter Default Notes Range and Incrementb Value STATUS ECON AVAIL NO YES/NO YES = economizing
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