Bryant 577D----A installation instructions Table Of Contents, Equipment Operation Hazard

577D--A EVOLUTIONR

15SEER SINGLE-PACKAGED AIR CONDITIONER AND GAS FURNACE SYSTEM WITH PURONR (R-410A) REFRIGERANT

SINGLE PHASE

2-5 NOMINAL TONS (SIZES 24-60)

Installation Instructions

!CAUTION

EQUIPMENT OPERATION HAZARD

Failure to follow this caution may result in improper unit operation.

OAT sensor must be field installed. See Accessory Installation for more details.

!CAUTION

EQUIPMENT OPERATION HAZARD

Failure to follow this caution may result in improper unit operation.

This Evolutionr unit is designed for use with an Evolution User Interface.

NOTE: Read the entire instruction manual before starting the

installation.
TABLE OF CONTENTS
	PAGE
SAFETY CONSIDERATIONS	. . . . 2
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	. . . . 3
Provide Clearances	. . . . 3
Rig and Place Unit	. . . . 3
Inspection	. . . . 3
Rigging/Lifting of Unit	. . . . 9
Select and Install Ductwork	. . . . 9
Configuring Units for Downflow (Vertical) Discharge	. . . 10
Provide for Condensate Disposal	. . . 10
Install Flue Hood	. . . 11
Install Gas Piping	. . . 11
Install Electrical Connections	. . . 12
High-Voltage Connections	. . . 12
Routing Power Leads Into Unit	. . . 12
Connecting Ground Lead to Ground Screw	. . . 12
Routing Control Power Wires	. . . 13
Accessory Installation	. . . 13
Special Procedures for 208-v Operation	. . . 13
PRE-START-UP	. . . 16
START-UP	16-29
Unit Start-Up and Troubleshooting	. . . 16
Sequence of Operation	. . . 23
Check for Refrigerant Leaks	. . . 28
Start-Up Adjustments	. . . 28

A09032

Fig. 1 - Unit 577D--A

Checking Cooling and Heating Control Operation . . . . . . 28 Checking and Adjusting Refrigerant Charge . . . . . . . . . . . 28 Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 No Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Low Charge Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 To Use Cooling Charging Charts . . . . . . . . . . . . . . . . . . . . 29

Non-Communicating Emergency Cooling/Heating Mode . . 29 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-34 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Indoor Fan and Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Inducer Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Limit Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Burner Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Main Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Inducer Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Outdoor Coil, Indoor Coil, and Condensate Drain Pan . . . . . 32 Outdoor Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Electrical Controls and Wiring . . . . . . . . . . . . . . . . . . . . . . . 32 Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Loss-of-Charge Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 High-Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Copeland Scroll Compressor (Puron® Refrigerant) . . . . . . . . 33 Refrigerant System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Servicing Systems on Roofs with Synthetic Materials . . . . 33 Liquid-Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Puron (R-410A) Refrigerant Charging . . . . . . . . . . . . . . . 34 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 FINAL CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 35 START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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