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48TM016-028 specifications
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60 pages, 2.79 Mb
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Fig. 2A — Roof Curb Detail
s — 48TM016-025
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
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Fig. 3 Rigging Details
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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
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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
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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
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Fig. 36 EconoMi$erIV Wiring
Fig. 37 EconoMi$er2 Wiring
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Fig. 43 CO2Sensor Maximum Range Setting
2345678
5000
4000
3000
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Step 14 Install Humidistat for Optional Moisture Mi$er P a c kage
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START-UP
Unit Preparation
Table 14 Fan Performance 48TMD016 (Low Heat Units)*
Table 15 Fan Performance 48TMF016 (High Heat Units)*
Table 16 Fan Performance 48TMD020 (Low Heat Units)*
Refer to page 39 for general Fan Performance Data notes.
Table 17 Fan Performance 48TMF020 (High Heat Units)*
Refer to page 39 for general Fan Performance Data notes.
Table 18 Fan Performance 48TMD025 (Low Heat Units)*
Table 19 Fan Performance 48TMF025 (High Heat Units)*
Table 20 Fan Performance 48TMD028 (Low Heat Units)*
Refer to this page for general Fan Performance Data notes.
Table 21 Fan Performance 48TMF028 (High Heat Units)*
Refer to this page for general Fan Performance Data notes.
GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES
Table 22 Air Quantity Limits
Table 23 Accessory/FIOP Static Pressure (in. wg)* 48TM016-028
Table 24 Fan Rpm at Pulley Settings*
Table 25 Evaporator-Fan Motor Data
Table 26 Evaporator-Fan Motor Efficiency
Operating Sequence
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SERVICE Cleaning
Lubrication
Evaporator Fan Performance Adjustment (Fig. 50 and 51)
Evaporator F an Se rvice and Replacement
Belt T ension Adjust ment
Condenser-Fan Adjustment
Po w e r F a i l u r e
Refrigerant Charge
Gas Valve Adjustment
Main Burners
Filter Dri er
Protective Devices
Relief De vices
Diagnosti c IGC Control LEDs
Optional Hinged Access Doo rs
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LEGEND AND NOTES FOR FIG. 57 AND 58
LEGEND
TROUBLESHOOTING Unit T rou bleshooting
EconoMi$erIV T r oubleshooting
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Table 28 Heating Service Analysis
Table 29 MoistureMi$er Dehumidification Subcooler Service Analysis
Table 30 EconoMi$erIV Input/Output Logic
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INDEX
SERVICE TRAINING
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START-UP CHECKLIST
PRE-START-UP
START-UP