Installation Instructions
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE
AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Job Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . 8
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . 9
Step 4 — Provide Unit Support. . . . . . . . . . . . . . . . 9
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB
OR SLAB MOUNT)
Step 5 — Field Fabricate Ductwork . . . . . . . . . . . 11
• UNITS WITH ACCESSORY ELECTRIC HEATERS
Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . 11
Step 7 — Convert to Horizontal and
Connect Ductwork (when required) . . . . . . . . . . . 12
Step 8 — Install Outside Air Hood . . . . . . . . . . . . 13
• ECONOMIZER HOOD REMOVAL AND SETUP
• TWO-POSITION DAMPER HOOD REMOVAL AND
SETUP
• ECONOMIZER AND TWO-POSITION HOOD
ASSEMBLY
Step 9 — Units with Hinged Panels Only . . . . . . . 14
Step 10 — Install External Condensate Trap
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Step 11 — Make Electrical Connections . . . . . . . 15
• FIELD POWER SUPPLY
• UNITS WITHOUT FACTORY-INSTALLED
DISCONNECT
• UNITS WITH FACTORY-INSTALLED DISCONNECT
•ALL UNITS
• CONVENIENCE OUTLETS
• FACTORY-OPTION THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• UNITS WITHOUT THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• FIELD CONTROL WIRING
• THERMOSTAT
• HEAT ANTICIPATOR SETTINGS
• COMMERCIAL DEFROST CONTROL
• ELECTRIC HEATERS
• CONTROL AND POWER WIRING DIAGRAMS
• ECONOMI$ER (FACTORY OPTION)
• SMOKE DETECTORS
• RTU OPEN CONTROLLER (FACTORY OPTION)
• CONTROLLER OPTIONS
Step 12 — Adjust Factory-Installed Options . . . 44
• SMOKE DETECTORS
• ECONOMI$ER IV OCCUPANCY SWITCH
Step 13 — Install Accessories. . . . . . . . . . . . . . . 44
Step 14 — Check Belt Tension . . . . . . . . . . . . . . 46
• BELT FORCE — DEFLECTION METHOD
• BELT TENSION METHOD
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . 46
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . 46
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . .CL-1
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloths for brazing operations and have a fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult local
building codes and appropriate national electrical codes (in USA,
ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA
C22.1) for special requirements.
It is important to recognize safety information. This is the safety-
alert symbol . When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
549J 07-09
Single Package Rooftop Heat Pump
with Puron
®
(R-410A) Refrigerant
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