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48ES
Comfort t 13 SE ER Single ---Packaged Air Conditioner
and Gas Furnace System with Puron® (R---410A) Refrigerant
Single and Three Phase
Sizes 024---060
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.
TA BLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1.........................
INTRODUCTION 2...................................
RECEIVING AND INSTALLATION 2--12.................
Check Equipment 2..................................
Identify Unit 2....................................
Inspect Shipment 2.................................
Provide Unit Support 2...............................
Roof Curb 2......................................
Slab Mount 2.....................................
Ground Mount 2..................................
Field Fabricate Ductwork 2............................
Provide Clearances 6.................................
Rig and Place Unit 6.................................
Inspection 6......................................
Use of Rigging Bracket 6............................
Rigging/Lifting 6..................................
Connect Condensate Drain 8...........................
Install Flue Hood 8...................................
Install Gas Piping 8..................................
Install Duct Connections 10............................
Configuring Units for Downflow (Vertical)
Discharge 10.....................................
Install Electrical Connections 11........................
High--Voltage Connections 11........................
Special Procedures for 208--V Operation 12..............
Control Voltage Connections 12.......................
Standard Connection 12.............................
Heat Anticipator Setting 12..........................
Transformer Protection 12...........................
P R E -- S T A R T -- U P 1 2 -- 1 3................................
START--UP 13--20.....................................
Check for Refrigerant Leaks 13.........................
Start--Up Heating & Make Adjustments 13................
Check Heating Control 13...........................
Check Gas Input 14................................
Adjust Gas Input 14................................
Check Burner Flame 15.............................
Normal Operation 15...............................
Airflow and Temperature Rise 15......................
Heating Sequence of Operation 15.....................
Limit Switches 19.................................
Rollout Switch 19.................................
Start-- Up Cooling & Make Adjustments 19................
Checking Cooling Control Operation 19................
Check ing & Adjusting Refrigerant Charge 19............
Indoor Airflow and Airflow Adjustments 20.............
Cooling Sequence of Operation 20.....................
A08438
Fig. 1 -- Unit 48ES
(Low NOx Model Available)
MAINTENANCE 27--30................................
Air Filter 27......................................
Indoor Blower and Motor 27.........................
Induced Draft (Combustion Air) Blower 28..............
Flue Gas Passageways 28............................
Limit Switch 28...................................
Burner Ignition 28.................................
Main Burners 2 8...................................
Removal of Gas Train 28............................
Outdoor Coil, Indoor Coil, & Condensate Drain Pan 28....
Outdoor Fan 29...................................
Electrical Controls and Wiring 29.....................
Refrigerant Circuit 29...............................
Gas Input 30......................................
Evaporator Airflow 30..............................
Puron Items 30....................................
TROUBLESHOOTING 31..............................
START--UP CHECKLIST 31............................
SAFETY CONSIDERATI ONS
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 a ll 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 u nit. consult local
building codes, the current editions of the National Fuel Gas Code