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604D----A
LEGACYt 13 SEER
SINGLE--PACKAGED HEAT PUMP SYSTEM
WITH PURONR (R--410A) REFRIGERANT
SINGLE AND THREE PHASE
NOMINAL 2 --5 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 -- 2.......................
INTRODUCTION 2...................................
RECEIVING AND INSTALLATION 2--10.................
Check Equipment 2..................................
Identify Unit 2....................................
Inspect Shipment 2.................................
Provide Unit Support 2...............................
Roof Curb 2......................................
Slab Mount 2.....................................
Provide Clearances 2.................................
Rig and Place Unit 3.................................
Inspection 3......................................
Rigging/Lifting of Unit 7............................
Select and Install Ductwork 7...........................
Converting Horizontal Discharge Units to Downflow
(Vertical) Discharge Units 8..........................
Provide for Condensate Disposal 9......................
Install Electrical Connections 9.........................
High--Voltage Connections 9.........................
Special Procedures for 208--V Operation 10..............
Control Voltage Connections 10.......................
Standard Connections 10............................
Transformer Protection 10...........................
Accessory Electric Heaters Installation 10...............
PRE--START-- UP 18...................................
START--UP 18--22.....................................
Checking Cooling & Heating Control Operation 18........
Check for Refrigerant Leaks 18.........................
Start--Up Adjustments 18.............................
604D---- A Sequence of Operation 19...................
Checking & Adjusting Refrigerant Charge 19............
Indoor Airflow & Airflow Adjustments 19..............
Continuous Fan Operation 20........................
Defrost Control 22...................................
Quiet Shift 22.....................................
Defrost 22.......................................
MAINTENANCE 22--28................................
Air Filter 22........................................
Indoor Blower and Motor 22...........................
Outdoor Coil, Indoor Coil, & Condensate Drain Pan 23......
Outdoor Fan 23.....................................
Electrical Controls and Wiring 26.......................
Refrigerant Circuit 26.................................
Indoor Airflow 27...................................
Metering Devices-- TXV & Piston 27....................
Pressure Switches 27.................................
Loss of Charge Switch 27.............................
High Pressure Switch 27..............................
Copeland Scroll compressor (Puron Refrigerant) 27.........
Refrigerant System 27................................
A09034
Fig. 1 -- Unit 604D---- A
Refrigerant 27....................................
Compressor Oil 27.................................
Servicing Systems on Roofs with Synthetic Materials 27....
Liquid Line Filter Drier 28...........................
PuronR (R-- 410A) Refrigerant Charging 28.............
System Information 28................................
Loss of Charge Switch 28............................
Check Defrost Thermostat 28.........................
TROUBLESHOOTING 28..............................
START--UP CHECKLIST 28............................
VERTICAL ECONOMIZER 32 --50.......................
General 32.........................................
Accessories 32......................................
Installation 32......................................
Small Chassis 32--33...............................
Large Chassis 36--38...............................
CONFIGURATION 39 --48..............................
OPERATION 49......................................
TROUBLESHOOTING 50..............................
SAFETY CONS IDERATIONS
Installation and servicing of this equipment can be hazardous due
to mechanical and electrical components. Only trained and
qualified personnel should install, repair, or service this equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on this
equipment, observe precautions in the literature, on tags, and on
labels attached to or shipped with the unit and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
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 Electrical Code (NEC) NFPA 70.