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Cancels: II 580F-90-2 II 580F-90-3
2/1/04
IMPORTANT — READ BEFORE INSTALLING
1. Read and become familiar with these installation
instructions before installing this unit. (See Fig. 1A
and 1B.)
2. Be sure the installation conforms to all applicable
local 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-49
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 . . . . . . . . . . . . . . . . . . . 12
VI. Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . 12
VII. Step 7 — Make Electrical Connections . . . . . . . . . 12
VIII. Step 8 — Adjust Factory-Installed Options. . . . . . 17
IX. Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . 27
PRE-START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50-61
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61-68
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .69-73
APPENDIX A — ECONOMI$ER+ LABEL . . . . . . . . . . . .74,75
APPENDIX B — JOB SPECIFIC ECONOMI$ER+
CONFIGURATION SETTINGS . . . . . . . . . . . . . . . . . . . . . 76
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
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 may 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.
INSTALLATION
Unit is shipped in the vertical discharge configuration. To
convert to horizontal configuration, remove screws from side
duct opening 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. If gas or electrical connections
are to be routed through the curb, attach the accessory thru-
the-curb service connection plate to the roof curb in accor-
dance with the accessory installation instructions. Connec-
tions must be installed before unit is set on roof curb.
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
also result in air or water 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.
If gas or electrical connections are to be routed through the
bottom of the unit, attach accessory thru-the-bottom service
connections to the basepan in accordance with the accessory
installation instructions.
CAUTION: Ensure voltage listed on unit data plate
agrees with electrical supply provided for the unit.
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 ever
subjected 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(s).
WARNING: Before performing service or mainte-
nance operations on unit, turn off main power switch
to unit and install lockout tag. Electrical shock could
cause personal injury.
installation, start-up and
service instructions
SINGLE PACKAGE ROOFTOP
GAS HEATING/ELECTRIC COOLING UNITS
580F
Dura
Pac
Series
Sizes 090-151
7
1
/
2
to 12
1
/
2
Tons