Economizer Supplement Related To California Title 24
Factory---Installed Economizersfor TC/TCQ/HC/HCQ/LC/KC/KCQRooftop Units3 to 27.5 Nominal TonsEconomizer Supplement Related ToCalifornia Title 24California’s new Title 24 is effective July 1, 2014 and requires several neweconomizer features.This supplement details these economizer updates and is to be used inconjunction with the base unit installation instructions for the following3 to 27.5 nominal ton models: TC/TCQ/HC/HCQ/LC/KC/KCQ.Supplement Index:S EconoMi er 2 DDC Title 24 offerings and definitions . . . . . . . . . . . . . . . . . Page 2NOTE: Wiring diagrams and instructions do not change.S EconoMi er X Title 24 electro--mechanical offerings and definitions . . . Pages 3--24This includes set up, start up and menu structure information.Title 24 Note: Because the economizer factory--installed in the unit is Title 24 listed by theCalifornia Energy Commission (CEC), field economizer commissioning is not required.
Title 24 EconoMi er 2 SupplementThe DDC economizer factory--installed in this rooftop unit meets some parts or all of the requirements ofthe new California Title 24 economizer standards.There are (2) significant parts to the economizer section of Title 24:— Mandatory section 120.2 Economizer Fault Detection and Diagnostics (FDD). This section’sintent is to allow only California Energy Commission (CEC) listed economizer controllers to beused to properly determine when an economizer control system fails and identifying the specificfailure. If your unit has either of these (2) Carrier control systems, the economizer meets Title 24section 120.2 mandatory FDD requirements.SUP-- TI24-- 02SIS SystemVu control system(A field--installed Return Air Temperature sensor accessory is required to meet Title 24.)S ComfortLink control system(A field--installed Return Air Temperature sensor accessory is required to meet Title 24.)S RTU Open control system— Prescriptive section 140.4 deals with several economizer related issues including minimaldamper leakage, damper life cycle testing, 5 year economizer warranty, etc. Because section140.4 is “prescriptive” they may not be required on some jobs. When an economizer with “UltraLow Leak” dampers is ordered, it meets the section 140.4 requirements.NOTE: These economizers also meet ASHRAE 90.1 requirements.Carrier factory--installed economizers that meet some or all of Title 24 are:ECONOMIZER TYPECONTROLLERDAMPEREconomizer 2SystemVuUltra Low LeakSection 120.2 and 140.4Economizer 2ComfortLinkUltra Low LeakSection 120.2 and 140.4Economizer 2ComfortLinkStandard LeakSection 120.2Economizer 2RTU OpenUltra Low LeakSection 120.2 and 140.4Economizer 2RTU OpenStandard LeakSection 120.2NOTE: PremierLink controller does not meet Title 24 section 120.22MEETS TITLE 24
Title 24 EconoMi er X SupplementELECTRO--MECHANICAL CONTROLSThe economizer factory--installed in this rooftop unit meets some parts or all of the requirements of the newCalifornia Title 24 economizer standards.There are (2) significant parts to the economizer section of Title 24:— Prescriptive section 140.4 deals with several economizer related issues including minimaldamper leakage, damper life cycle testing, 5 year economizer warranty, etc. Because section140.4 is “prescriptive” they may not be required on some jobs. When an economizer with “UltraLow Leak” dampers is ordered, it meets the section 140.4 requirements.NOTE: These economizers also meet ASHRAE 90.1 requirements.Carrier factory--installed economizers that meet some or all of Title 24 are:ECONOMIZER TYPECONTROLLERDAMPERMEETS TITLE 24EconoMi er XHoneywell W7220Ultra Low LeakSection 120.2 and 140.4EconoMi er XHoneywell W7220Standard LeakSection 120.2The EconoMi er X W7220 controller is factory set for either a 1 speed or 2 speed unit, depending uponthe unit ordered.NOTE: EconoMi er X can also be used with 3 speed LC units.The following section provides general information and typical wiring diagrams for the W7220controller.3SUP-- TI24-- 02SI— Mandatory section 120.2 Economizer Fault Detection and Diagnostics (FDD). This section’sintent is to allow only California Energy Commission (CEC) listed economizer controllers to beused to properly determine when an economizer control system fails and identifying the specificfailure. Carrier offers the EconoMi er X control system, using the W7220 Honeywell controller,that meet the mandatory section 120.2 FDD requirements:
SUP-- TI24-- 02SIFig. 1 - Example of an EconoMi er X Wiring Diagram for a Single Speed Unit NOTE: For details pertaining to a specific unit, see the Wiring Diagram label on the unit.4C14243
SUP-- TI24-- 02SIFig. 2 - Example of an EconoMi er X Wiring Diagram for a 2 Speed Unit NOTE: For details pertaining to a specific unit, see the Wiring Diagram label on the unit.5C14336
SUP-- TI24-- 02SIFig. 3 - Example of an EconoMi er X Wiring Diagram for a 3 Speed Unit NOTE: For details pertaining to a specific unit, see the Wiring Diagram label on the unit.6C14110
SAFETY CONSIDERATIONS!Improper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electricalshock or other conditions which may cause personalinjury or property damage. Consult a qualified installer,service agency, or your distributor or branch forinformation or assistance. The qualified installer oragency must use factory-- authorized kits or accessorieswhen modifying this product. Refer to the individualinstructions packaged with the kits or accessories wheninstalling.WARNINGELECTRICAL SHOCK HAZARDFailure to follow this warning could cause personalinjury or death.Before performing service or maintenance operationson unit, always turn off main power switch to unit andinstall lock(s) and lockout tag(s). Unit may have morethan one power switch. Ensure electrical service torooftop unit agrees with voltage an amperage listed onthe unit rating plate.!CAUTIONCUT HAZARDFailure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Usecare and wear appropriate protective clothing, safetyglasses and gloves when handling parts and servicingair conditioning equipment.It is important to recognize safety information. This is the. When you see this symbol on thesafety-- alert symbolunit and in instructions or manuals, be alert to thepotential for personal injury.Understand the signal words DANGER, WARNING,CAUTION, and NOTE. These words are used with thesafety-- alert symbol.DANGER identifies the most serious hazards which willresult in severe personal injury or death. WARNINGsignifies hazards which could result in personal injury ordeath.CAUTION is used to identify unsafe practices, whichmay result in minor personal injury or product andproperty damage.NOTE is used to highlight suggestions which will result inenhanced installation, reliability, or operation.7SUP-- TI24-- 02SIFollow all safety codes. Wear safety glasses and workgloves. Use quenching cloths for brazing operations andhave a fire extinguisher available. Read these instructionsthoroughly and follow all warnings or cautions attached tothe unit. Consult local building codes and appropriatenational electrical codes (in USA, ANSI/NFPA70,National Electrical Code (NEC); in Canada, CSA C22.1)for special requirements.
W7220 ECONOMIZER MODULESystem ComponentsThe EconoMi er X system includes an Economizer module,20k mixed air sensor, damper actuator, and either a 20koutdoor air temperature sensor or S--Bus enthalpy sensors.Economizer ModuleSUP-- TI24-- 02SIThis is the core of the EconoMi er X System, is mountedin the unit’s control box, and includes the user interfacefor the system. The W7220 Economizer Module providesthe basic inputs and outputs to provide simple economizercontrol. When used with the optional sensors, theEconomizer Module provides more advanced economizerfunctionality.S--Bus Enthalpy Control SensorsFig. 4 - W7220 Economizer ModuleC14154Product DescriptionThis economizer system is an expandable economizercontrol system, which includes a W7220 EconomizerModule (controller) with an LCD and keypad. The W7220can be configured with optional sensors.The W7220 Economizer Module can be used as astand-- alone economizer module wired directly to acommercial set-- back space thermostat and sensors toprovide Outside Air dry-- bulb economizer control.The S-- bus enthalpy control sensor is a combinationtemperature and humidity sensor which is powered by andcommunicates on the S-- Bus. Up to three sensors may beconfigured with the W7220 Economizer Module. Seepage 11 for details.CO2 Sensor (optional)A CO2 sensor can be added for Demand ControlVentilation (DCV).Certified FDD ProductCalifornia Title 24, Part 6HJW10The W7220 Economizer Module can be connected tooptional sensors for single or differential enthalpy control.The W7220 Economizer Module provides power andcommunications for the sensors.www.energy.ca.govThe W7220 Economizer Module automatically detectssensors by polling to determine which sensors are present.If a sensor loses communications after it has beendetected, the W7220 Economizer indicates a device failerror on its LCD.C14159C14160E44368C14161
W7220 Economizer ModuleThe module is designed for use with 2 to 10Vdc or buscommunicating actuator. The module includes terminalsfor CO2 sensor, Mixed Air sensor, and an Outdoor DryBulb sensor. Enthalpy and other options are available withbus sensors.User Interface: Provides status for normal operation,setup parameters, checkout tests, and alarm and errorconditions with a 2-- line 16 character LCD display andfour button keypad.ElectricalRated Voltage: 20 to 30 Vac RMS, 50/60 HzTransformer: 100 va maximum system inputNominal Power Consumption (at 24 Vac, 60 Hz):11.5 VA without sensors or actuatorsRelay Digital Output Rating at 30 Vac (maximumpower from Class 2 input only): 1.5A run:3.5A inrush @ 0.45PF (200,000 cycles) or7.5A inrush @ 0.45PF (100,000 cycles)External Sensors Power Output: 21 Vdc 5% @ 48mAOutputsActuator signal: 2-- 10 Vdc; minimum actuator impedanceis 2k ohm; bus two-- wire output for bus communicatingactuators.Exhaust fan, Y1, Y2 and AUX1 O:All Relay Outputs (at 30 Vac):Running: 1.5A maximumInrush: 7.5A maximumEnvironmentalOperating Temperature: - 40 to 150 F (-- 40 to 65 C).Exception of display operation down to - 4 F with fullrecovery at - 4 F from exposure to - 40 FStorage Temperature: - 40 to 150 F (-- 40 to 65 C)Shipping Temperature: - 40 to 150 F (-- 40 to 65 C)Relative Humidity: 5% to 95% RH non-- condensingDimensions (see Fig. 5, below):Height: 4.98 inches (126.4 mm)Width: 6.3 inches (160 mm)Depth: 1.34 inches (34 mm)Weight: 0.58 lb. (0.265 kg)6-19/64 (160)IMPORTANT: All inputs and outputs must be Class 2wiring.InputsSENSORS:NOTE: A Mixed Air (MA) analog sensor is required onall W7220 units; either an Outdoor Air (OA) sensor fordry bulb change over or an OA bus sensor for outdoorenthalpy change over is required in addition to the MAsensor. An additional Return Air (RA) bus sensor can beadded to the system for differential enthalpy or dry bulbchangeover. For differential dry bulb changeover a 20kohm sensor is required in the OA and a bus sensor in theRA. Dip switch on RA bus sensor must be set in the RAposition.Dry Bulb Temperature (optional) and Mixed Air(required), 20k NTC:2-- wire (18 to 22 AWG);Temperature range - 40 to 150 F (-- 40 to 65 C).Temperature accuracy - 0 F/ 2 FTemperature and Humidity, C7400S1000 (optional):S-- Bus; 2-- wire (18 to 22 AWG)Temperature: range - 40 to 150 F (-- 40 to 65 C)Temperature accuracy - 0 F/ 2 FHumidity: range 0 to 100% RH with 5% accuracy.4-63/64(126)MOUNTING HOLE (X2)3-5/32 (80)C14155Fig. 5 - Dimensions for Mounting Holes in Inches (mm)BEFORE INSTALLATIONReview the “SPECIFICATIONS’ (above) before installingthe W7220A economizer module.When Installing This Product1. Read these instructions carefully. Failure to followthem could damage the product or cause a hazardouscondition.2. Check ratings given in instructions and on the productto ensure the product is suitable for your application.3. Installer must be a trained, experienced servicetechnician.4. After installation is complete, check out productoperation as provided in these instructions.NOTE: Up to three (3) S-- Bus sensors may be connectedto the W7220 Economizer module. For outdoor air (OA),return air (RA) and discharge (supply) air (DA).4 Binary inputs:1--wire 24 Vac common GND (see page 11 for wiringdetails). 24 Vac power supply: 20 to 30 Vac 50/60Hz;100 VA Class 2 transformer.9SUP-- TI24-- 02SISPECIFICATIONS
NOTE: The W7220 will be in the ”set up” mode for thefirst 60 minutes after powered. If a sensor for OA air orbus device (sensor, actuator) is disconnected during the setup mode, the W7220 will not alarm that failure. The MAsensor is a system ”critical”sensor, if the MA sensor isremoved during the set up mode, the W7220 will alarm.After 60 minutes the W7220 controller will change tooperation mode and all components removed or failed willalarm in the operation mode.INSTALLATION AND SETUPSUP-- TI24-- 02SIThe following installationperformed in the order listed:1.2.3.4.5.proceduresshouldbeMounting — see Fig. 5 (on page 9).Wiring — see pages 4, 5 and 6.Interface and Programming overview – see page 11.Setup and Configuration — see page 12Checkout — see page 23.Troubleshooting and Alarms—see page 24.Table 1 – Economizer Module Left Hand Terminal BlocksLabelTypeDescriptionTop Left Terminal BlockMATMAT20k NTCandCOMSupply Air Temperature Sensor(polarity insensitive connection)OATOAT20k NTCandCOMOutdoor Air Temperature Sensor(polarity insensitive connection)S--- BUSS--- BUSS--- Bus(Sylk Bus)Enthalpy Control Sensor(polarity insensitive connection)Bottom Left Terminal BlockIAQ 2--- 102--- 10 VdcAir Quality Sensor Input(e.g. CO2 sensor)IAQ COMCOMAir Quality Sensor CommonIAQ 24V24 VacAir Quality Sensor 24 Vac SourceACT 2--- 102--- 10 VdcDamper Actuator Output (2--- 10 Vdc)ACT COMCOMDamper Actuator Output CommonACT 24V24 VacDamper Actuator 24 Vac Sourcen/aThe bottom pin is not used.Economizer Module Wiring DetailsThe wiring connection terminals for each module/sensor are:Table 2 – Economizer Module Right Hand Terminal BlocksS “W7220 Economizer Module Wiring” on pages 10 - 11.S “S-- Bus Sensor Wiring” on page 11LabelTypeDescriptionTop Right Terminal BlockW7220 Economizer Module WiringUse Fig. 6 and Tables 1 and 2 to locate the wiringterminals for the Economizer module.NOTE: The four terminal blocks are removable. You canslide out each terminal block, wire it, and then slide itback into place.W7220 Controllern/aThe first pin is not usedAUX2 I24 Vac INShut Down (SD) or Heat (W)Conventional onlyorHeat Pump Changeover (O/B) inHeat Pump mode.OCC24 Vac INOccupied / Unoccupied InputE--- GNDE--- GNDEarth Ground --- System RequiredEXH124 Vac OUTExhaust Fan 1 OutputAUX1 O24 Vac OUTProgrammable:Exhaust fan 2 outputorErvorSystem Alarm outputY2--- I24 Vac INY2 in --- Cooling Stage 2 Input fromspace thermostatY2--- O24 Vac OUTY2 out --- Cooling Stage 2 Output tostage 2 mechanical coolingY1--- I24 Vac INY1 in --- Cooling Stage 1 Input fromspace thermostatY1--- O24 Vac OUTY1 out --- Cooling Stage 1 Output tostage 1 mechanical coolingCCOM24 Vac CommonR24 Vac24 Vac Power (Hot)Bottom Right Terminal BlockNOTE: The bottom 4 Pin actuator header is not usedLeft TerminalBlock LabelRight TerminalBlock LabelC14156Fig. 6 - W7220 Economizer Module TerminalConnection Labels.10
S--Bus Sensor WiringTable 4 – Enthalpy Control Sensor DIP Switch SettingsUse Fig. 7 and Table 4 to set the DIP switches for thedesired used of the sensor.DIP Switch Positions for Switches 1, 2, & 3UseabcDA aRA bOA c123OFFONOFFONOFFOFFOFFOFFOFFDA Discharge AirRA Return AirOA Outside AirNOTE: When a S-- bus sensor is connected to an existingnetwork, it will take 60 minutes for the network torecognize and auto-- configure itself to use the new sensor.During the 60 minute setup period, no alarms for sensorfailures (except SAT) will be issued and no economizingfunction will be available.CO2 Sensor WiringWhen using a CO2 sensor the black and brown commonwires are internally connected and only one is connectedto ”IAQ COM” on the W7220. Use the power from theW7220 to power the CO2 sensor OR make sure the groundfor the power supplies are common. See Fig. 8 for CO2sensor wiring.DIPSwitchLabelDIPSwitches(3)CO2 SENSORRED24VANALOGOUTFig. 7 - S-- Bus Sensor DIP SwitchesNbr12aLabelS--- BUSS--- BUSC14157TypeDescriptionS--- BUSS--- Bus Communications(Enthalpy Control Sensor Bus)S--- BUSS--- Bus Communications(Enthalpy Control Sensor Bus)Terminals are polarity insensitive.–YELLOWBROWNGREEN1Table 3 – Enthalpy Control Sensor Wiring Terminations aTerminal L1(HOT)L21ORANGES-Bus2 Pin SideConnectorS-BusTerminals(1 and 2)BLACKPOWER SUPPLY. PROVIDE DISCONNECTMEANS AND OVERLOAD PROTECTIONAS REQUIRED.Fig. 8 - Wiring for CO2 SensorC14158INTERFACE OVERVIEWThis section describes how to use the Economizer’s userinterface for:S Keypad and menu navigationS Settings and parameter changesS Menu structure and selection11SUP-- TI24-- 02SIThe labels on the sensors and controller are color codedfor ease of installation. Orange labeled sensors can onlybe wired to orange terminals on the controller. Brownlabeled sensors can only be wired to S-- bus (brown)terminals. Use Fig. 7 and Table 3 to locate the wiringterminals for each S-- Bus sensor.
User InterfaceThe user interface consists of a 2-- line LCD display and a4-- button keypad on the front of the economizer controller.SUP-- TI24-- 02SI2 LINELCDNOTE: When values are displayed, pressing andorbutton causes theholding thedisplay to automatically increment.(Enter) button to accept the displayed7. Press thevalue and store it in nonvolatile RAM.8. “CHANGE STORED” displays.(Enter) button to return to the current9. Press themenu parameter.(Menu Up/Exit) button to return to the10. Press theprevious menu.Menu StructureTable 5, starting on page 13, illustrates the completehierarchy of menus and parameters for the EconoMi er Xsystem.The Menus in display order are:MENU TONFig. 9 - W7220 ControllerS STATUSS SETPOINTSC14206S SYSTEM SETUPS ADVANCED SETUPS CHECKOUTKeypadThe four navigation buttons (see Fig. 9) are used to scrollthrough the menus and menu items, select menu items,and to change parameter and configuration settings.Using the Keypad with MenusTo use the keypad when working with menus:S Press themenu.(Up arrow) button to move to the previousS Press themenu.(Down arrow) button to move to the next(Enter) button to display the first item inS Press thethe currently displayed menu.(Menu Up/Exit) button to exit a menu’sS Press theitem and return to the list of menus.Using the Keypad with Settings and ParametersTo use the keypad when working with Setpoints, Systemand Advanced Settings, Checkout tests and Alarms:1. Navigate to the desired menu.(Enter) button to display the first item in2. Press thethe currently displayed menu.3. Use theandbuttons to scroll to the desiredparameter.4. Press the(Enter) button to display the value of thecurrently displayed item.button to increase (change) the displayed5. Press theparameter value.6. Press thebutton to decrease (change) the displayedparameter value.S ALARMSIMPORTANT: Table 5 illustrates the complete hierarchy.Your menu parameters may be different depending onyour configuration.For example if you do not have a DCV (CO2) sensor, thennone of the DCV parameters appear and only MIN POSwill display. If you have a CO2 sensor, the DCV MIN andDCV MAX will appear AND if you have 2 speed fanDCV MIN (high and low speed) and DCV MAX (highand low speed will appear).NOTE: Some parameters in the menus use the letters MAor MAT, indicating a mixed air temperature sensorlocation before the cooling coil. This unit application hasthe control sensor located after the cooling coil, in the fansection, where it is designated as (Cooling) Supply AirTemperature or SAT sensor.SETUP AND CONFIGURATIONBefore being placed into service, the W7220 Economizermodule must be setup and configured for the installedsystem.IMPORTANT: During setup, the Economizer module islive at all times.The setup process uses a hierarchical menu structure thatandarrow buttons tois easy to use. You press themove forward and backward through the menus and pressbutton to select and confirm setup item changes.theTime--out and ScreensaverWhen no buttons have been pressed for 10 minutes, theLCD displays a screen saver, which cycles through theStatus items. Each Status items displays in turn and cyclesto the next item after 5 seconds.12
Table 5 – Menu Structure e and Increment bEXPANDED PARAMETER NAMENotesECON AVAILNOYES/NOECONOMIZING AVAIALBLEYES economizing available; the system can use outside air for freecooling when requiredECONOMIZINGNOYES/NOECONOMIZING ACTIVEYES Outside air being used for 1st stage cooling.NO Economizing not activeOCCUPIEDNOYES/NOOCCUPIEDYES OCC signal received from space thermostator unitary controller.YES 24 Vac on terminal OCC.NO 0 Vac on terminal OCC.HEAT PUMPn/a cCOOLHEATHEAT PUMP MODEDisplays COOL or HEAT when system is set to heat pump(non---conventional)COOL Y1 ---INOFFON/OFFFIRST STAGE COOLING DEMAND (Y1---IN)Y1---I signal from space thermostat or unitary controller for Cooling Stage 1.ON 24 Vac on terminal Y1---IOFF 0Vac on terminal Y1---ICOOL Y1 ---OUTOFFON/OFFFIRST STAGE COOLING RELAY OUTPUTCool Stage 1 Relay Output to mechanical cooling (Y1---OUT terminal).COOL Y2 ---INOFFON/OFFSECOND STAVE COOLING DEMAND (Y2---IN)Y2---I signal from space thermostat or unitary controller for Cooling Stage 2.ON 24 Vac on terminal Y2---IOFF 0 Vac on terminal Y2---ICOOL Y2 ---OUTOFFON/OFFSECOND STAGE COOLING RELAY OUTPUTCool Stage 2 Relay Output to mechanical cooling (Y2---OUT terminal).MA TEMP. F(or . C)---40 to 150 F( ---18 to 60 C)SUPPLY AIR TEMPERATRUE, Cooling ModeDisplays value of measured mixed/cooled air from SAT sensor in fansection.Displays --- ---.--- if not connected, short or out---of---range. See Menu Note 2DA TEMP. F(or . C)---40 to 150 F( ---18 to 60 C)DISCHARGE AIR TEMPERATRUE, after Heating section(Accessory sensor required)Displays when Discharge Air sensor is connected and displays measureddischarge temperature.Displays --- ---.--- F if sensor sends invalid value, if not connected, short orout---of---range.OA TEMP. F(or . C)---40 to 140 F( ---40 to 60 C)OUTSIDE AIR TEMPERATRUEDisplays measured value of outdoor air temperature.Displays --- --- F if sensor sends invalid value, if not connected, short orout---of---range.OA HUM%0 to 100%OUTSIDE AIR RELATIVE HUMIDITYDisplays measured value of outdoor humidity from OA enthalpy sensor.RA TEMP. F(or . C)0 to 140 F( ---18 to 60 C)RETURN AIR TEMPERATRUE(Accessory sensor required)Displays measured value of return air temperature from RAT sensor.Displays --- --- F if sensor sends invalid value, if not connected, short orout---of---range.RA HUM%0 to 100%RETURN AIR RELATIVE HUMIDITY(Accessory enthalpy sensor required)Displays measured value of return air humidity from RA sensor.Displays --- ---% if sensor sends invalid value, if not connected, short orout---of---range.IN CO2ppm0 to 2000 ppmSPACE/RETURN AIR CO2(CO2 sensor required, accessory or factory option)Displays value of measureds actual position of outdoor air damper actuatorACT COUNTn/a1 to 65535Displays number of times actuator has cycled.1 Cycle equals accrued 180 of actuator movement in any directionACTUATORn/aOK/Alarm(on Alarm menu)Displays Error if voltage or torque is below actuator rangeEXH1 OUTOFFON/OFFEXHAUST STAGE 1 RELAY OUTPUTOutput of EXH1 terminal. Displays On when damper position reachesprogrammed percentage setpoint.ON 24 Vac Output; OFF No Output.13SUP-- TI24-- 02SIMenu
Table 5 - Menu Structure a (cont)MenuSUP-- TI24-- ValueParameterRange and Increment bEXPANDED PARAMETER NAMENotesEXH2 OUTOFFON/OFFEXHAUST STAGE 2 RELAY OUTPUTOutput of AUX1 O terminal Displays ON when damper position reachesprogrammed percentage setpointON 24 Vac Output, OFF No Output; displays only if AUX1 O EXH2ERVOFFON/OFFENERGY RECOVERY UNIT RELAY OUTPUTOutput of AUX1 O terminal, ON 24 Vac Output, OFF No Output;displays only if AUX1 O ERVMECH COOL ONorHEAT STAGES ON00, 1, or 2Displays stage of mechanical cooling that is active.FAN SPEEDn/aLOW or HIGHSUPPLY FAN SPEEDDisplays speed setting of fan on a 2---speed fan unit.W (HEAT ON)n/aON/OFFHEAT DEMAND STATUSDisplays status of heat demand on a 2---speed fan unit.MAT SET53 F(12 C)38 to 70 F;(3 to 21 C)increment by 1SUPPLY AIR SETPOINTSetpoint determines where the economizer will modulate the OA damper tomaintain the mixed air temperature.See Menu Note 2.LOW T LOCK32 F(0 C)---45 to 80 F;( ---43 to 27 C)increment by 1COMPRESSOR LOW TEMPERATURE LOCKOUTSetpoint determines outdoor temperature when the mechanical coolingcannot be turned on. Commonly referred to as the Compressor lockout. Ator below the setpoint the Y1---O and Y2---O will not be energized on thecontroller.DRYBLB SET63 F(17 C)48 to 80 F(9 to 27 C)increment by 1OA DRY BULB TEMPERATURE CHANGEOVER SETPOINTSetpoint determines where the economizer will assume outdoor airtemperature is good for free cooling; e.g.: at 63 F (17 C), unit willeconomize at 62 F (16.7 C) and below and not economize at 64 F(17.8 C) and above. There is a 2 F (1.1 C)deadband.See Menu Note 3ENTH CURVEES3ES1, ES2, ES3, ES4, orES5ENTHALPY CHANGEOVER CURVE(Requires enthalpy sensor option)Enthalpy boundary “curves” for economizing using single enthalpy.See page 22 for description of enthalpy curves.DCV SET1100ppm500 to 2000 ppm;increment by 100DEMAND CONTROL VENTILATION SETPOINTDisplays only if CO2 sensor is connected. Setpoint for Demand ControlVentilation of space. Above the setpoint, the OA dampers will modulateopen to bring in additional OA to maintain a space ppm level below thesetpoint.MIN POS2.8 V2 to 10 VdcVENTILATION MINIMUM POSITIONDisplays ONLY if a CO2 sensor is NOT connected.Displays the stage of heat pump heating that is activeWith 2---speed fan units MIN POS L (low speed fan) and MIN POS H (highspeed fan) settings are required. Default for MIN POS L is 3.2V and MINPOS H is 2.8V.VENTMAXVENTMIN2.8 V2.25 V2 to 10 VdcDCV MAXIMUM DAMPER POSITIONDisplays only if a CO2 sensor is connected. Used for Vbz (ventilation maxcfm) setpoint. VENTMAX is the same setting as MIN POS would be if youdid not have the CO2 sensor.100 to 9990 cfmincrement by 10If OA, MA RA and CO2 sensors are connected and DCV CAL ENABLE isset to AUTO mode, the OA dampers are controlled by CFM and displaysfrom 100 to 9990 cfm.2 to 10 VdcWith 2---speed fan units VENTMAX L (low speed fan) and VENTMAX H(high speed fan) settings are required. Default for VENTMAX L is 3.2V andVENTMAX H is 2.8V.2 to 10 VdcDCV MINIMUM DAMPER POSITIONDisplays only if CO2 sensor is connected. Used for Va (ventilation min cfm)setpoint. This is the ventilation requirement for less than maximumoccupancy of the space.100 to 9990 cfmincrement by 10If OA, MA RA and CO2 sensors are connected and DCV CAL ENABLE isset to AUTO mode, the OA dampers are controlled by CFM and displaysfrom 100 to 9990 cfm.2 to 10 VdcWith 2 ---speed fan units VENTMIN L (low speed fan) and VENTMIN H(high speed fan) settings are required. Default for VENTMIN L is 2.5Vand VENTMIN H is 2.25V.ERV OAT SP d32 F(0 C)0 to 50 F;( ---18 TO 10 C)increment by 1ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR TEMPERATURESETPOINTOnly when AUX1 O ERVEXH1 SET50%0 to 100%;Increment by 1EXHAUST FAN STAGE 1 SETPOINTSetpoint for OA damper position when exhaust fan 1 is powered by theeconomizer.With 2---speed fan units Exh1 L (low speed fan) and Exh1 H (high speedfan) settings are required. Default for Exh1 L is 65% and Exh1 H is 50%14
Table 5 - Menu Structure a (cont)ParameterParameterDefaultValueParameterRange and Increment bEXPANDED PARAMETER NAMENotesSETPOINTS(cont)EXH2 SET75%SYSTEMSETUPINSTALL01/01/10UNITS DEGFF or CSets economizer controller in degrees Fahrenheit or Celsius.EQUIPMENTCONVConventional or HPCONV conventional;HP O/B Enable Heat Pump mode. Use AUX2 I for Heat Pump input fromthermostat or controller.See Menu Note 4AUX2 INn/aShutdown (SD)Heat (W1)HP (O)HP (B)In CONV mode:SD Enables configuration of shutdown (default);W Informs controller that system is in heating mode.NOTE: If using 2---speed fan mode, you must program CONV modefor W. Shutdown is not available in 2---speed fan mode.See Menu Note 4.0 to 100%;Increment by 1EXHAUST FAN STAGE 2 SETPOINTSetpoint for OA damper position when exhaust fan 2 is powered by theeconomizer. Only used when AUX1 O is set to EHX2.With 2---speed fan units Exh2 L (low speed fan) and Exh2 H (high speedfan) settings are required. Default for Exh2 L is 80% and Exh2 H is 75%Display order MM/DD/YYSetting order DD, MM, then YY.In HP O/B mode:HP(O) energize heat pump on Cool (default);HP(B) energize heat pump on Heat.ADVANCEDSETUPFAN SPEED1speed1 speed/2 speedSets economizer controller for operation of 1 speed or 2 speed supply fan.The controller does not control the fan but positions the OA and RAdampers to the heating or cooling mode. See page 23 for modes andposition.NOTE: 2---speed fan option also needs Heat (W1) programmed inAUX 2 In. See Menu Note 4.FAN CFM5000cfm100 to 15000 cfm;increment by 100UNIT DESIGN AIRFLOW (CFM)Enter ONLY if using DCVCAL ENA AUTOThe value is found the nameplate label for the specific RTU.AUX1 OUTNONENONEERVEXH2SYSSelect OUTPUT for AUX1 O relayNONE not configured (output is not used)ERV Energy Recovery Ventilator dEXH2 second damper position 24 Vac out for second exhaust fanSYS use output as an alarm signalOCCINPUTINPUT or ALWAYSOCCUPIED MODE BY EXTERNAL SIGNALWhen using a setback thermostat with occupancy out (24 Vac), the 24 Vacis input “INPUT” to the OCC terminal. If no occupancy output from t
Economizer Supplement Related To California Title 24 California’s new Title 24 is effective July 1, 2014 and requires several new . commercial set--back space thermostat and sensors to provide Outside Air dry--bulb economizer
economizer control system, which includes a W7220 Economizer Module (controller) with an LCD and keypad. The W7220 can be configured with optional sensors. The W7220 Economizer Module can be used as a stand-alone economizer module wired directly to a commercial set back space thermostat and sensors to pro
Digit 14—Fresh Air Selection r i a h s e r F0No A Manual outside air damper 0–50%1 B Motorized Outside air damper 0–50% C Economizer, dry bulb 0–100% without barometric relief4 D Economizer, dry bulb 0–100% with barometric relief4 E Economizer, reference enthalpy 0-100% without barometric relief3,4 F Economizer, reference enthalpy
the economizer control module A56 when to power the damper motor B7. 3. The economizer control module A56 supplies B7 with between 0 and 10 Vdc to control the positioning of economizer. 4. The damper actuator provides 2 to 10 Vdc position feedback. 5. The economizer control module A56 receives a demand and energizes exhaustFile Size: 1MB
The high stage screw compressor is with economizer, but the low stage (Booster) compressor is without economizer. Compressor used for this Option-2: Low Stage (Booster): Screw Compressor without Economizer High Stage: Screw Compressor with Economizer The calculation and selection procedures are almost the same as for the System
ECOCSUN3672 Series Convertible Economizer for York Sunline 3-6 Ton Units Before Starting Installation Form: ECO-164-R8 1 1. Turn power off to unit being serviced or worked on. 2. Remove horizontal duct panels and filter access panel, saving unit screws for securing economizer hoods. Also, remove filters from unit. This will make economizer
For systems with non-DDC controls, manufacturer's startup and testing pro cedures have been applied. STATE OF CALIFORNIA AIR ECONOMIZER CONTROLS ACCEPTANCE CEC-NRCA-MCH-05-A (Revised 06/14) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF ACCEPTANCE NRCA-MCH-05-A Air Economizer Controls Acceptance (Page 2 of 3) Project Name: Enforcement Agency .
Cooling Proportional Band Cooling Integration Return Air Temperature Heating Command Preheat Command Cooling Command Economizer Command Go To Economizer Switchover Logic Economizer 0 Supply Airflow Shutdown 0 Heating Integration Term 0 Supply Airflow Shutdown 0 Cooling Integration Term 0 Separate Mixed Air Closed Loop 100% 0 2 1 1 Mixed Air .
governing America’s indigent defense services has made people of color second class citizens in the American criminal justice system, and constitutes a violation of the U.S. Government's obligation under Article 2 and Article 5 of the Convention to guarantee “equal treatment” before the courts. 8. Lastly, mandatory minimum sentencing .
