Carrier 48ES---A - Manual

1
48ES---A
Comfort t 13 SEER Single---Packaged Air Conditioner
and Gas Furnace System with Puron® (R---410A) Refrigerant
Single and Three Phase
2---5 Nominal Tons (Sizes 24---60)
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
NOTE:
Installer: Make sure the Owner’s Manual and Service
Instructions are left with the unit after installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1 . . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVING AND INSTALLATION 2--13 . . . . . . . . . . . . . . . . .
Check Equipment 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identify Unit 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Shipment 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Unit Support 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roof Curb 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slab Mount 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Fabricate Ductwork 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Clearances 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rig and Place Unit 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rigging/Lifting 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect Condensate Drain 9 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Flue Hood 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Gas Piping 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Duct Connections 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Units for Downflow (Vertical)
Discharge 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Electrical Connections 12 . . . . . . . . . . . . . . . . . . . . . . . .
High--Voltage Connections 12 . . . . . . . . . . . . . . . . . . . . . . . .
Special Procedures for 208--V Operation 12 . . . . . . . . . . . . . .
Control Voltage Connections 12 . . . . . . . . . . . . . . . . . . . . . . .
Standard Connection 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heat Anticipator Setting 13 . . . . . . . . . . . . . . . . . . . . . . . . . .
Transformer Protection 13 . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRE--START--UP 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP 14--22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check for Refrigerant Leaks 13 . . . . . . . . . . . . . . . . . . . . . . . . .
Start--Up Heating & Make Adjustments 14 . . . . . . . . . . . . . . . .
Check Heating Control 14 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Gas Input 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjust Gas Input 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Burner Flame 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Operation 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Airflow and Temperature Rise 20 . . . . . . . . . . . . . . . . . . . . . .
Heating Sequence of Operation 20 . . . . . . . . . . . . . . . . . . . . .
Limit Switches 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rollout Switch 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start--Up Cooling & Make Adjustments 20 . . . . . . . . . . . . . . . .
Checking Cooling Control Operation 20 . . . . . . . . . . . . . . . .
Checking & Adjusting Refrigerant Charge 20 . . . . . . . . . . . .
Indoor Airflow and Airflow Adjustments 21 . . . . . . . . . . . . .
Continuous Fan Operation 21 . . . . . . . . . . . . . . . . . . . . . . . .
Cooling Sequence of Operation 22 . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE 29--30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Filter 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A09034
Fig. 1 -- Unit 48ES--A
(Low NOx Model Available)
Indoor Blower and Motor 29 . . . . . . . . . . . . . . . . . . . . . . . . .
Induced Draft (Combustion Air) Blower 30 . . . . . . . . . . . . . .
Flue Gas Passageways 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limit Switch 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Burner Ignition 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Burners 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal of Gas Train 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outdoor Coil, Indoor Coil, & Condensate Drain Pan 30 . . . .
Outdoor Fan 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Controls and Wiring 32 . . . . . . . . . . . . . . . . . . . . .
Refrigerant Circuit 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Input 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evaporator Airflow 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Puron Items 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP CHECKLIST 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local
building codes, the current editions of the National Fuel Gas Code
(NFGC) NFPA 54/ANSI Z223.1, and the National Electrical Code
(NEC) NFPA 70.
In Canada refer to the current editions of the National Standards of
Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane
Installation codes, and Canadian Electrical Code CSA C22.1