1
577C
PREFERRED
t 14 SEER SINGLE--P ACKAGED AIR CONDITIONER
AND GAS FURNACE SYSTEM WITH PURONr (R--410A) REFRIGERANT
SINGLE AND THREE PHASE
1--1/2 -- 5 NOMINAL TONS (SIZES 018--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.
TABLE 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 9.............................
Configuring Units for Downflow (Vertical)
Discharge 9--10...................................
Install Electrical Connections 11........................
High-- Voltage Connections 11........................
Special Procedures for 208--V Operation 11..............
Control Voltage Connections 11.......................
Standard Connection 11.............................
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.............................
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................
Checking & Adjusting Refrigerant Charge 19............
Indoor Airflow and Airflow Adjustments 20.............
Cooling Sequence of Operation 20.....................
A99338
Fig. 1 -- Unit 577C
(Low NOx Model Available)
MAINTENANCE 27--30................................
Air Filter 28......................................
Indoor Blower and Motor 28.........................
Induced Draft (Combustion Air) Blower 28..............
Flue Gas Passageways 28............................
Limit Switch 28...................................
Burner Ignition 28.................................
Main Burners 28...................................
Removal of Gas Train 28............................
Outdoor Coil, Indoor Coil, & Condensate Drain Pan 29....
Outdoor Fan 29...................................
Electrical Controls and Wiring 29.....................
Refrigerant Circuit 30...............................
Gas Input 30......................................
Evaporator Airflow 30..............................
Puron Items 30....................................
TROUBLESHOOTING 31..............................
START--UP CHECKLIST 31............................
SAFETY CONSIDERATIONS
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. Installation must be in compliance with
local and national building codes. Wear safety glasses, protective
clothing, and work gloves. Have fire extinguisher available. Read
these instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit.
Recognize safety information. This is the safety-- alert symbol
.
When you see this symbol on the unit and in instructions or manu-
To Next Page
Need help?
General
