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48NET
Installation, start-up and service instructions manual
Carrier 48NET Installation, Start-Up And Service Instructions Manual
Packaged heating/cooling units
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Installation, start-up and service instructions manual
(27 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Contents
Safety Considerations
Receiving and Installation
Check Equipment
Physical Data
Provide Unit Support
Provide Clearances
Rig and Place Unit
Connect Condensate Drain
Install Venting
Install Gas Piping
Vent Cap Assembly
Maximum Gas Glow Capacity
Install Duct Connections
Sediment Trap
Location of Coil Area Not to be Drilled
Install Electrical Connections
High-Voltage Connections
Electrical Data
Pre Start-Up
Special Procedures for 208-V Operation
Control Voltage Connections
Transformer Circuit Protection
Start-Up
Check for Refrigerant
Start-Up Heating Section and Make Adjustments
Check Gas Input
Rated Gas Inputs
Check Burner Flame
Blower Heat-Relay Operation
Airflow and Temperature Rise
Safety Check of Limit Control
Heating Sequence of Operation
Blower Auxiliary Limit Switch
Rollout Auxiliary Limit Switch
Typical Single-Phase Wiring Diagram
Typical 3-Phase Wiring Diagram
Start-Up Cooling Section and Make Adjustments
Checking Cooling Control Operation
Checking and Adjusting Refrigerant Charge
Air Delivery at Indicated Temperature Rise and Rated Heating Input
Superheat Charging Table
Required Suction
Dry Coil Air Delivery
Unit Controls
Cooling Sequence of Operation
High-Pressure Relief Valve
Compressor Overload
Maintenance
Wet Coil Pressure Drop
Heating Troubleshooting Chart
Cooling Troubleshooting Chart
Air Filter
Unit Top Removal
Evaporator Blower and Motor
Heating Section
Pilot
Condenser Coil, Evaporator Coil and Condensate Drain Pan
Position of Electrode to Pilot
Condenser Fan
Electrical Controls and Wiring
Gas Input
Evaporator Airflow
Piston Sizes
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Contents
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Physical Data
3
Electrical Data
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Table of Contents
Troubleshooting
Heating troubleshooting chart
21
Cooling troubleshooting chart
22
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This manual is also suitable for:
48nvt
48nht
48nlt
48nmt
48net042
48net036
...
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48nvt036
48nvt042
48nvt048
48nvt060
48nht024
48nht030
48nht036
48nht042
48nht048
48nht060
48nlt018
48nlt024
48nlt030
48nlt036
48nlt042
48nlt048
48nlt060
48nmt030
48nmt036
48nmt042
48nmt048
48nmt060
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