installation, start-up and

service instructions580F

DuraPac Series

SINGLE PACKAGE ROOFTOP

Sizes 036-073

GAS HEATING/ELECTRIC COOLING UNITS

3 to 6 Tons

 

 

Cancels: II 580F-36-3

II 580F-36-4

 

1/15/04

IMPORTANT — READ BEFORE INSTALLING

1.Read and become familiar with these installation instructions before installing this unit (Fig. 1A and 1B).

2.Be sure the installation conforms to all applicable lo- cal and national codes.

3.These instructions contain important information for the proper maintenance and repair of this equipment. Retain these instructions for future use.

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-36

I. Step 1 — Provide Unit Support. . . . . . . . . . . . . . . . . 1

II. Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . 4

III. Step 3 — Install External Trap for

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 IV. Step 4 — Rig and Place Unit. . . . . . . . . . . . . . . . . . . 4 V. Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . 6 VI. Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . 6 VII. Step 7 — Make Electrical Connections . . . . . . . . . 10 VIII. Step 8 — Adjust Factory-Installed Options . . . . . . 14 IX. Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . 24

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37-47

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47-52

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .53-57

APPENDIX A — ECONOMI$ER+ LABEL . . . . . . . . . . . 58, 59

APPENDIX B — JOB SPECIFIC ECONOMI$ER+ CONFIGURATION SETTINGS . . . . . . . . . . . . . . . . . . . . . 60

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

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

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

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

WARNING: Disconnect gas piping from unit when leak testing at pressure greater than 1/2 psig. Pres- sures greater than 1/2 psig will cause gas valve damage resulting in hazardous condition. If gas valve is sub- jected to pressure greater than 1/2 psig, it must be replaced before use. When pressure testing field- supplied gas piping at pressures of 1/2 psig or less, a unit connected to such piping must be isolated by man- ually closing the gas valve.

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

CAUTION: Ensure voltage listed on unit data plate agrees with electrical supply provided for the unit.

INSTALLATION

Unit is shipped in the vertical duct configuration. To convert to horizontal configuration, remove screws from side duct open- ing covers and remove covers. Using the same screws, install covers on vertical duct openings with the insulation-side down. Seals around duct openings must be tight. See Fig. 2.

Confirm before installation of unit that voltage, amperage and circuit protection requirements listed on unit data plate agree with power supply provided.

I. STEP 1 — PROVIDE UNIT SUPPORT

A. Roof Curb

Assemble and install accessory roof curb in accordance with instructions shipped with curb. See Fig. 3. Install insulation, cant strips, roofing felt, and counter flashing as shown. Duct- work must be attached to curb, not to the unit. The accessory thru-the-bottom power and gas connection package must be installed before the unit is set on the roof curb. If field- installed (thru-the-roof curb) gas connections are desired, use factory-supplied 3/4-in. pipe coupling and gas plate assembly to mount the thru-the-roof curb connection to the roof curb. Gas connections and power connections to the unit must be field installed after the unit is installed on the roof curb.

If electric and control wiring is to be routed through the basepan, attach the accessory thru-the-bottom service con- nections to the basepan in accordance with the accessory installation instructions.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 3. Improperly applied gasket can result in air leaks and poor unit performance.

Curb should be level. Unit leveling tolerances are shown in Fig. 4. This is necessary for unit drain to function properly. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

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Bryant 580F installation instructions Important Read Before Installing, Contents, Safety Considerations, Installation

580F specifications

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