Bryant 580G manual Contents, IX. Outdoor-AirInlet Assembly, X. Power Exhaust/Barometric Relief

installation, start-up and service instructions

580G,H

Sizes 240-360

SINGLE PACKAGE ROOFTOP

ELECTRIC COOLING/GAS HEATING UNITS

Cancels: II 580G,H-240-1	II 580G,H-240-2
	11/1/97

CONTENTS
	Page
SAFETY CONSIDERATIONS	. 1
INSTALLATION	2-20
I. Provide Unit Support	. 2
II. Rig and Place Unit	. 2
III. Field Fabricate Ductwork	. 7
IV. Unit Duct Connections	. 7
V. Flue Hood	. 8
VI. Trap Condensate Drain	. 8
VII. Gas Piping	. 8
VIII. Electrical Connections	. 9
IX. Outdoor-Air Inlet Assembly	14
X. Power Exhaust/Barometric Relief
Damper Hood	18
XI. Accessories	19
PRE-START-UP	20,21

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-28

I. Cooling Section Start-Up and

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

II. Heating Section Start-Up and

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 III. Field Test Operation . . . . . . . . . . . . . . . . . . . . . . 24

IV. Indoor Air¯ow and Air¯ow

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 V. Gas Valve Adjustment . . . . . . . . . . . . . . . . . . . . 25 VI. Main Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 VII. Power Exhaust Operation . . . . . . . . . . . . . . . . . . 28 VIII. Head Pressure Control . . . . . . . . . . . . . . . . . . . 28

IX. Low Ambient Kit . . . . . . . . . . . . . . . . . . . . . . . . . 28

CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . 28

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-32

I. Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

II. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

III. Evaporator Fan Service and

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

IV. Evaporator-Fan Motor Replacement . . . . . . . . 31

V. Power Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

VI. Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . 31

VII. Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

VIII. Thermostatic Expansion Valve (TXV) . . . . . . . . 32

IX. Protective Devices . . . . . . . . . . . . . . . . . . . . . . . 32

X. Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

XI. Control Circuits . . . . . . . . . . . . . . . . . . . . . . . . . 32

XII. Compressor Lockout Logic . . . . . . . . . . . . . . . 32

XIII. Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . 32

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 33-41

I. Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 33

II. Error Code Summary . . . . . . . . . . . . . . . . . . . . . 34

III. Input/Output Channel Designations . . . . . . . . . 34

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. Only trained and quali®ed service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func- tions of cleaning coils and ®lters and replacing ®lters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe pre- cautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have ®re extinguishers available for all brazing operations.

WARNING: Before performing service or mainte- nance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

WARNING:

1.Improper installation, adjustment, alteration, serv- ice, or maintenance can cause property damage, per- sonal injury, or loss of life. Refer to the User's Information Manual provided with this unit for more details.

2.Do not store or use gasoline or other ¯ammable vapors and liquids in the vicinity of this or any other appliance.

What to do if you smell gas:

1.DO NOT try to light any appliance.

2.DO NOT touch any electrical switch, or use any phone in your building.

3.IMMEDIATELY call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.

4.If you cannot reach your gas supplier, call the ®re department.

WARNING: Disconnect gas piping from unit when pressure testing at pressure greater than 0.5 psig. Pres- sures greater than 0.5 psig will cause gas valve dam- age resulting in hazardous condition. If gas valve is subjected to pressure greater than 0.5 psig, it must be replaced before use. When pressure testing ®eld- supplied gas piping at pressures of 0.5 psig or less, a unit connected to such piping must be isolated by clos- ing the manual gas valve(s).