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Hersteller: Carrier Dateigröße: 1.38 mb Dateiname: 48_50mp-1si.pdf Unterrichtssprache:

2 INSTALLATION ............................ 3-28 Jobsite Survey ............................. 3 Unit Placement ............................ 3 Roof Mount ................................ 3 Slab Mount ................................ 3 Field-Fabricated Ductwork .................. 3 Rigging .................................... 3 Condensate Drains ......................... 3 Condensate Coil Shipping Covers .......... 3 Install Outdoor Hoods ...................... 3 Make Electrical Connections ................ 14 • POWERSUPPLY Field Electrical Connections ................ 14 • POWERWIRING Control Wiring ............................. 17 • SENSORS • HUMIDITYCONTROLANDHOTWATER ANDSTEAMVALVES • SPACETEMPERATURESENSOR(T55) • SPACETEMPERATURESENSOR(T56) (CVApplicationsOnly) • SPACETEMPERATUREAVERAGING • HEATINTERLOCKRELAY(VAVUnitsOnly —NotNecessaryForDAVApplications) • OPTIONANDACCESSORYCONTROLWIRING Carrier Comfort Network Interface .......... 23 Air Pressure Tubing ........................ 24 Gas Piping (48 Series Units Only) ............26 Installing Flue/Inlet Hoods (48MP Units Only) .........................26 Fan Isolator Adjustment .................... 27 Check Compressor Mounting ............... 27 Install Accessories ......................... 27 PRE-START-UP ............................28-38 System Check ............................. 28 Compressor Oil ............................ 29 Evaporator-Fan Belts, Pulleys, and Sheaves .............................. 29 Controls Configuration and Quick Test ...... 35 • SUPPLYFANSTATUSSWITCH(FS) • CHECKFILTERSWITCH(CFS) • ENTHALPYCONTROLSETPOINT • KEYPADANDDISPLAYMODULE(HSIO) CONFIGURATION • SETUNITTYPE • ENTERJOBSETPOINTVALUES • CONFIGUREUNITCONTROLSAND FUNCTIONS • QUICKTESTFUNCTION Page Gas Pressure Check ........................38 Check Supply Fan Rotation ................. 38 START-UP ................................38-42 Initial Check ............................... 38 General .....................................39 Operating Sequences ...................... 39 • SUPPLYFAN • ECONOMIZER • COOLING(AllUnits) • OCCUPIEDCOOLING • UNOCCUPIEDCOOLING • OVERRIDES • ADAPTIVEOPTIMALSTART • ADAPTIVEOPTIMALSTOP (CVApplicationsOnly) • GASHEATING,OPERATION (48MPUnitsOnly) Control Loop Checkout ..................... 41 IAQ Control Loop Adjustment ............... 42 Lead/Lag Circuits .......................... 42 Final Checks ............................... 42 CONTROL SYSTEM ........................42-45 General .................................... 42 Components ............................... 42 • PROCESSORMODULENO.1 • PROCESSORMODULENO.2 • HIGH-VOLTAGERELAYMODULES(DSIO) • KEYPADANDDISPLAYMODULE(HSIO) Default Set Points/Changing Set Points ..... 43 Motor Protection ........................... 43 Variable Frequency Drive (VFD) ............. 43 • DISPLAYANDKEYPAD SERVICE ..................................45-55 Service Access ............................ 45 • UNITCONTROLBOX • COMPRESSORS • LIQUIDSERVICEVALVES,SOLENOIDVALVES, FILTERDRIERS,ANDSIGHTGLASSES • EVAPORATOR-FANMOTORS,PULLEYS,AND BELTS • POWEREXHAUSTMOTORS,PULLEYS,AND BELTS • GASHEATSECTION • UNITCONTROLBOX • ECONOMIZERDAMPERMOTORS • RETURN-AIRFILTERS • CONDENSERFANSANDFANMOTORS Cleaning .................................. 46 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 1 PC 111 Catalog No. 534-893 Printed in U.S.A. Form 48/50MP-1SI Pg 1 12-98 Replaces: 50MP-1SI Tab 1a 1b CONTENTS (cont) Page Lubrication ................................ 47 • COMPRESSORS • FAN SHAFT BEARINGS • FAN MOTOR BEARINGS • DOOR HINGES Coil Cleaning .............................. 47 Refrigerant Circuit ......................... 47 Oil Charge ................................. 49 Moisture/Liquid Indicator ................... 49 Filter Driers ................................ 49 Liquid Line Service Valve ................... 50 Compressor Suction and Discharge Service Valves ............................ 50 High-Pressure Switch ...................... 50 Low-Pressure Switch ....................... 50 Pressure Relief ............................ 50 Adjustments ............................... 50 • EVAPORATOR FAN AND POWER EXHAUST MOTOR PLATE • BELT INSTALLATION AND TENSIONING • PULLEY ALIGNMENT Gas Valve Adjustment .......................52 • NATURAL GAS GENERAL This installation instruction contains base unit installation, start-up, and service instructions only. For complete information on PIC (Product Integrated Controls) controls and troubleshooting, refer to separate Controls and Troubleshooting literature also enclosed in this literature packet. IMPORTANT: 1. Tune all loops immediately after starting units. Refer to Control Loop Checkout section on page 40 for more information on tuning loops. 2. The Data Reset function should be performed any time one or more of the unit factory configuration values are changed. 3. The HSIO (human sensor input/output)...

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