Carrier 48TM016-028

Fig. 27 — Enthalpy Switch/Receiver Dimensions

(33CSENTHSW) Fig. 28 — Enthalpy Sensor Dimensions

(33CSENTSEN)

Fig. 29 — Typical Wiring Schematic — Carrier Rooftop Unit with PremierLink™ Controls

*Used with Differential Enthalpy Control only.

Contents

Main Installation, Start-Up and Service Instructions CONTENTS SAFETY CONSIDERATIONS 48TM016-028 Single-Package Rooftop Units Electric Cooling/Gas Heating INSTALLATION Step 1 Provide Unit Support Step 2 Rig and Place Unit Page Page Fig. 3 Rigging Details Page Page Page Table 1 Physical Data Table 1 Physical Data (cont) Step 3 Field F abricate Duct work Step 4 Make Un it Duct Conn ections Step 5 Install Flue Hood and Wind Baffle Step 6 T rap Condensate Drain Step 7 Orifice Chan ge Step 8 Install Gas Piping Step 9 Make Electrical Connections Page Table 5 Electrical Data Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Step 10 Make Outdoor-Air Inlet Adjust- ments Step 11 Install Outdoor-Air Hood Step 12 Install All Accessori es Page Step 13 Adjust Factory-Installed Options FIELD THERMOSTAT* Fig. 26 Typical PremierLink Controls Wiring PremierLink SPT Space Temperature Sensor SAT Supply Air Temperature Sensor PL Plug Page Page Page Page Page Fig. 36 EconoMi$erIV Wiring Fig. 37 EconoMi$er2 Wiring Page Page Fig. 43 CO2Sensor Maximum Range Setting 2345678 5000 4000 3000 Page Step 14 Install Humidistat for Optional Moisture Mi$er P a c kage Page START-UP Unit Preparation Table 14 Fan Performance 48TMD016 (Low Heat Units)* Table 15 Fan Performance 48TMF016 (High Heat Units)* Table 16 Fan Performance 48TMD020 (Low Heat Units)* Refer to page 39 for general Fan Performance Data notes. Table 17 Fan Performance 48TMF020 (High Heat Units)* Refer to page 39 for general Fan Performance Data notes. Table 18 Fan Performance 48TMD025 (Low Heat Units)* Table 19 Fan Performance 48TMF025 (High Heat Units)* Table 20 Fan Performance 48TMD028 (Low Heat Units)* Refer to this page for general Fan Performance Data notes. Table 21 Fan Performance 48TMF028 (High Heat Units)* Refer to this page for general Fan Performance Data notes. GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES Table 22 Air Quantity Limits Table 23 Accessory/FIOP Static Pressure (in. wg)* 48TM016-028 Table 24 Fan Rpm at Pulley Settings* Table 25 Evaporator-Fan Motor Data Table 26 Evaporator-Fan Motor Efficiency Operating Sequence Page SERVICE Cleaning Lubrication Evaporator Fan Performance Adjustment (Fig. 50 and 51) Evaporator F an Se rvice and Replacement Belt T ension Adjust ment Condenser-Fan Adjustment Po w e r F a i l u r e Refrigerant Charge Gas Valve Adjustment Main Burners Filter Dri er Protective Devices Relief De vices Diagnosti c IGC Control LEDs Optional Hinged Access Doo rs Page Page LEGEND AND NOTES FOR FIG. 57 AND 58 LEGEND TROUBLESHOOTING Unit T rou bleshooting EconoMi$erIV T r oubleshooting Page Table 28 Heating Service Analysis Table 29 MoistureMi$er Dehumidification Subcooler Service Analysis Table 30 EconoMi$erIV Input/Output Logic Page Page INDEX SERVICE TRAINING Page START-UP CHECKLIST PRE-START-UP START-UP