1
P Y 4 G -- -- B
Installation Instructions
14 SEER SINGLE---PACKAGED AIR CONDITIONER AND
GAS FURNACE SYSTEM WITH R ---410A REFRIGERANT
S I N G L E P H A S E 2 --- 5 N O M I N A L T O N S ( S I Z E S 2 4 --- 6 0 )
T H R E E P H A S E 3 --- 5 N O M I N A L T O N S ( S I Z E S 3 6 --- 6 0 )
IMPORTANT: Effective January 1, 2015, all split system and
packaged air conditioners must be installed pursuant to applicable
regional efficiency standards issued by the Department of Energy.
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--12.................
Check Equipmen t 2..................................
Identify Unit 2....................................
Inspect Shipment 2.................................
Provide Unit Support 2...............................
Roof Curb 2......................................
Slab Mount 2.....................................
Field Fabricate Ductwork 3............................
Provide Clearances 3.................................
Rig and Place Unit 3.................................
Inspection 3......................................
Rigging/Lifting of Unit 3............................
Connect Condensate Drain 8...........................
Install Flue Hood 8...................................
Install Gas Piping 9..................................
Install Duct Connections 10............................
Configuring Units for Downflow (Vertical)
Discharg e 10.....................................
Install Electrical Connections 11........................
High-- Voltage Connections 11........................
Special Procedures for 208--V Operation 11..............
Contro l Voltage Connections 11.......................
Standard Connection 12.............................
Heat Anticipator Setting 12..........................
Transformer Protection 12...........................
PRE-- START--UP 12...................................
START--UP 13--25.....................................
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 23...............................
Airflow and Temperature Rise 23......................
Heating Sequence of Operation 23.....................
Limit Switches 23.................................
Rollout Switch 23.................................
Start--Up Cooling & Make Adjustments 23................
Checking Cooling Control Operation 23................
Checking & Adjusting Refrigerant Charge 24............
Indoor Airflow and Airflow Adjustments 24.............
Cooling Sequence of Operation 25.....................
A09183
Fig. 1 -- Unit PY4G---- B
(Low NOx Model Available)
MAINTENANCE 52--55................................
Air Filter 52......................................
Indoor Blower and Motor 52.........................
Induced Draft (Combustion Air) Blower 53..............
Flue Gas Passageways 53............................
Limit Switch 53...................................
Burner Ignition 53.................................
Main Burners 53...................................
Removal of Gas Train 53............................
Outdoor Coil, Indoor Coil, & Condensate Drain Pan 53....
Outdoor Fan 54...................................
Electrical Controls and Wiring 54.....................
Refrigerant Circuit 55...............................
Gas Input 55......................................
Evaporator Airflow 55..............................
R--410A Items 55..................................
TROUBLESHOOTING 56..............................
START -- UP CHECKLIST 56............................
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
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