Carrier 50HCQA04-06, Installation Instructions Manual

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500210-01 Printed in U.S.A. Form 50HCQ-4-6-01SI Pg 1 12-18 Replaces: 50HCQ-01SI
Installation Instructions
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE
AND DIMENSIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Job Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . 6
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit
Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . 7
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . 7
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB
OR SLAB MOUNT)
Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . 9
• UNITS WITH ACCESSORY ELECTRIC HEATERS
Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 9
Step 7 — Convert to Horizontal and
Connect Ductwork (when required)
. . . . . . . . . . . 10
Step 8 — Install Outside Air Hood . . . . . . . . . . . . 11
• 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 . . . . . . . 12
Step 10 — Install External Condensate Trap
and Line
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Step 11 — Make Electrical Connections . . . . . . . 13
• 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$ER (FACTORY OPTION)
• SMOKE DETECTORS
• RTU OPEN CONTROLLER (FACTORY OPTION)
• CONTROLLER OPTIONS
Step 12 — Adjust Factory-Installed Options . . . 43
• SMOKE DETECTORS
• ECONOMI$ER IV OCCUPANCY SWITCH
Step 13 — Install Accessories . . . . . . . . . . . . . . . 43
Step 14 — Check Belt Tension . . . . . . . . . . . . . . 45
• BELT FORCE — DEFLECTION METHOD
• BELT TENSION METHOD
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . 45
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . 45
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
50HCQA04-06
Single Package Rooftop Heat Pump
with Puron
®
(R-410A) Refrigerant