Carrier WEATHERMASTER 48/50Z030-105 Operation And Service Manual

Also see for 48/50Z030-105: Installation instructions

Contents

Carrier WEATHERMASTER 48/50Z030-105 Operation And Service Manual Manual pdf 34 page image

344. See the Economizer Options section on this page for ad-ditional economizer option configurations.5. See the Exhaust Options section on this page for addition-al exhaust option configurations.Multi-Stage Constant Volume Units withSpace Sensor — To configure the unit, perform thefollowing:1. Under Configuration→UNIT→C.TYP, set C.TYP to 5(SPT MULTI).2. Install jumpers between R-W2 and W2-W1.3. Under the Setpoints menu, the following configurationsshould be set:4. Under the Setpoints submenu, the heating and cooling setpoints must be configured:5. Under Configuration→UNIT→SENS→SPT.S, enablethe space sensor by setting SPT.S to ENBL.6. Under Configuration→UNIT→CV.FN, set CV.FN to 1for continuous fan or 0 for automatic fan.7. To program time schedules, set SCH.N=1 under Config-uration→CCN→SC.OV→SCH.N to configure the con-trol to use local schedules.8. Under the Timeclock→SCH.L submenu, enter the de-sired schedule. See Time Clock section for furtherdescriptions of these configurations.9. See the Economizer Options section below for additioneconomizer option configurations.10. See the Exhaust Options section below for additionexhaust option configurations.Economizer Options — Under the Configuration→ECON submenu, the following set points should be configured:Configuration→ECON→EC.MN should always be set forthe minimum damper position.If the unit is equipped with an outdoor air flow station, thefollowing points in Configuration→ECON→CFM.C need tobe set.If equipped with an outdoor flow station, make sureConfiguration→ECON→OCF.S is enabled. If an outdoorair cfm station is used, then the economizer will control tocfm, not a position, as long as the sensor is valid. Therefore,Configuration→ECON→O.C.MX supersedes Configura-tion→ECON→EC.MN.Indoor Air Quality OptionsDEMAND CONTROL VENTILATION — Under Configu-ration→IAQ→DCV.C, the following configuration parame-ters should be set to establish the minimum and maximumpoints for outdoor air damper position during demand controlventilation (DCV):EC.MN Economizer Min.PositionIAQ.M IAQ Demand Vent Min.Pos.O.C.MX Economizer Min.FlowO.C.MN IAQ Demand Vent Min.FlowConfiguration→IAQ→DCV.C→IAQ.M is used to set theabsolute minimum vent position (or maximum reset) underDCV.Configuration→IAQ→DCV.C→EC.MN is used to set theminimum damper position (or with no DCV reset). This is alsoreferenced in the economizer section.Configuration→IAQ→DCV.C→O.C.MX is used onlywith the outdoor air flow station and will supersede Configura-tion→IAQ→DCV.C→EC.MN as long as the outdoor air cfmsensor is valid.Configuration→IAQ→DCV.C→O.C.MN is used onlywith the outdoor air flow station and will supersede Configura-tion→IAQ→DCV.C→IAQ.M as long as the outdoor air cfmsensor is valid.Exhaust Options — The following exhaust optionsshould be configured.LEGEND*Single VFD controlling both fan motors.†Single VFD controlling one fan motor and staging the second fanmotor.Configuration→BP→BF.CF=1 (Two-Stage ExhaustOption) — For two-stage exhaust, under the Configuration-→BP submenu, configure the following:SA.HI Supply Air Set Point HiSA.LO Supply Air Set Point LoOHSP Occupied Heat SetpointOCSP Occupied Cool SetpointUHSP Unoccupied Heat SetpointUCSP Unoccupied Cool SetpointGAP Heat-Cool Setpoint GapD.LV.T Cool/Heat Set Point OffsetsEC.EN Economizer Enabled?EC2.E Econ Act.2 Installed?EC.MN Economizer Min.PositionEC.MX Economizer Maximum PositionE.TRM Economizer Trim for SumZ?E.SEL Econ Changeover SelectOA.E.C OA Enthalpy Change Over SelectOA.EN Outdoor Enthalpy Compare ValueOAT.L High OAT Lockout TempO.DEW OA Dew Point Temp LimitORH.S Outside Air RH SensorOCF.S Outdoor Air CFM SensorO.C.MX Economizer Minimum FlowO.C.DB Economizer Minimum Flow DeadbandUNITEXHAUST TYPEConstantVolume2-StageModulatingPowerExhaustS.O.VFD*High-CapacityPowerExhaust†ReturnExhaust†48ZG50ZG,Z2 X X S.O. NA NA48ZN50ZN,Z3 NA X S.O. NA NA48ZT,ZW50ZT,ZW,ZX,ZZ NA NA NA STD NA48Z6,Z850Z6,Z7,Z8,Z9 NA NA NA NA STDX — Available as Factory OptionS.O. — Available as Special OrderNA — Not Available on this UnitSTD — Standard Feature on this UnitBP.P1 Power Exhaust On Setp.1BP.P2 Power Exhaust On Setp.2