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Installation, Operation and Maintenance
1.5 Through 5 Ton
Split System Air Conditioner
R-410A Refrigerant
THIS UNIT USES:
See precautions on page 5
TABLE OF CONTENTS
INTRODUCTION ..............................................................................1
NOTES TO INSTALLER ....................................................................1
RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS ................1
CODES ............................................................................................1
INSPECTION AND UNPACKING ......................................................1
Clearances ..........................................................................2
Support ..............................................................................2
Exposure ............................................................................2
Proximity to Evaporator....................................................2
ELECTRICAL CONNECTIONS ..........................................................2
Braze Joints ..............................................................................3
Evacuation ................................................................................3
Opening the Service Valve (Step Valve) ................................3
REFRIGERANT PIPING ...................................................................4
Precautions ................................................................................4
Liquid Line Sizes........................................................................4
Suction Line Sizes......................................................................4
R-410A Refrigerant precautions .................................................5
SUBCOOLING CHARGING ............................................................5
OPERATION INSTRUCTIONS ..........................................................6
MAINTENANCE INSTRUCTIONS ....................................................6
CIRCUIT DIAGRAM ....................................................................... 6
CONDENSING UNIT NOMENCLATURE ..........................................7
NOTE:
THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED
SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT
AND OPERATION OF THIS EQUIPMENT. READ THE ENTIRE
INSTRUCTION MANUAL THOROUGHLY BEFORE ATTEMPTING
INSTALLATION OR OPERATION.
IOMCDU1-F.1GB
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Summary of Contents for Fedders C18ABZ1VF
- Page 1 Installation, Operation and Maintenance 1.5 Through 5 Ton Split System Air Conditioner R-410A Refrigerant THIS UNIT USES: See precautions on page 5 TABLE OF CONTENTS INTRODUCTION ................1 NOTES TO INSTALLER ..............1 RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS ....1 CODES ....................1 INSPECTION AND UNPACKING ............1 INSTALLATION Clearances ................2...
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Page 2: Introduction
INTRODUCTION RECOGNIZE SAFETY SYMBOLS, You have made a major investment in a fine piece of WORDS AND LABELS equipment. Keep your investment sound by reading these instructions before installing this unit. This will ensure that What You Need To Know About the full potential of this equipment is achieved. -
Page 3: Support
Proximity to Evaporator INSTALLATION Locating the condenser as close as possible to the Condensing Unit Location evaporator will increase the system capacities by reducing the line set refrigerant pressure drop, and will make the The condensing unit should be located outdoors as close as system less susceptible to liquid migrations due to less possible to the evaporator. -
Page 4: Service Valve Connections Braze Joints
Model Electrical Connections (cont.) Evacuation The outdoor unit is factory charged. Evacuation is necessary Connect Control Wiring on the uncharged portions of the total system. Purge the 1. Route 24 volt control wires through control wiring system with dry nitrogen. Then connect a vacuum pump and grommet and connect leads to control wiring. -
Page 5: Refrigerant Piping
Can only be MODEL 15 FT 25 FT 50 FT 75 FT* 20’ vertical NUMBER LINE SET LINE SET LINE SET LINE SET separation INDOOR without C18ABZ1VF 3/8” 3/8” 3/8” 3/8” COIL additional C24ABZ1VF 3/8” 3/8” 3/8” 3/8” accessories. SUCTION C30ABZ1VF 3/8”... -
Page 6: R-410A Refrigerant Precautions
Model SUB-COOLING CHARGING R-410A Refrigerant Precautions Coils with TXVs should be charged 10-12 degrees (+ or – one WARNING degree) of sub-cooling. For proper sub-cooling readings, a standard high side gauge is required for pressure readings. DO NOT USE R-22 SERVICE EQUIPMENT OR Use the chart below to determine the required sub-cooling value. -
Page 7: Operation Instructions
OPERATION INSTRUCTIONS 1. If the furnace and air conditioner are on separate WARNING thermostats, turn the furnace thermostat off during the BE SURE THE UNIT DISCONNECT IS IN THE “OFF” cooling season to prevent simultaneous operation of the POSITION AND THAT ALL ELECTRICAL POWER TO THE heating and cooling systems. -
Page 8: Condensing Unit Nomenclature
For replacement parts please, consult the installing dealer or contractor. Airwell-Fedders North America 2 Centre Drive Monroe Township, NJ 08831...
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