Carrier 50FCQ 08 Series Installation Instructions Manual

CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE AND
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . 10
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit Installation . . 10
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . 10
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
SLAB MOUNT)
Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . . 12
• FOR UNITS WITH ACCESSORY ELECTRIC HEATERS
Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 12
• POSITIONING ON CURB
Step 7 — Convert to Horizontal and Connect
Ductwork (when required) . . . . . . . . . . . . . . . . . . 13
Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . 14
• ECONOMIZER HOOD PACKAGE REMOVAL 
(FACTORY OPTION)
• ECONOMIZER HOOD SETUP
Step 9 — Install External Condensate Trap 
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Step 10 — Make Electrical Connections . . . . . . . . . 15
• FIELD POWER SUPPLY
• FIELD POWER WIRING CONNECTIONS
• UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT
• UNITS WITHOUT FACTORY-INSTALLED
NON-FUSED DISCONNECT
• ALL UNITS
• CONVENIENCE OUTLETS
• FACTORY OPTION THRU-BASE CONNECTIONS
• UNITS WITHOUT THRU-BASE CONNECTIONS
• FIELD CONTROL WIRING
• THERMOSTAT
• UNIT WITHOUT THRU-BASE CONNECTION KIT
• HEAT ANTICIPATOR SETTINGS
• COMMERCIAL DEFROST CONTROL
• ELECTRIC HEATERS
• SINGLE POINT BOXES AND SUPPLEMENTARY
FUSES
• SINGLE POINT BOXES WITHOUT FUSES
• LOW-VOLTAGE CONTROL CONNECTIONS
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500351-01
Installation Instructions
Page
Printed in U.S.A. Form No. 50FCQ-8-12-02SI Rev. A
WeatherMaker
Single Package Rooftop Heat Pump
with Puron ®
and EcoBlue™ Fan Technology
• CONTROL AND POWER WIRING DIAGRAMS
EconomizerONE (Factory Option) . . . . . . . . . . . . . .31
• ECONOMIZER SETTINGS
• WIRING
• SETUP AND CONFIGURATION
• INSTALLING OPTIONAL HH57LW001 SINGLE 
OUTSIDE AIR ENTHALPY SENSOR
• CHECKOUT
• TROUBLESHOOTING
SystemVu™ Controller (Factory Option) . . . . . . . . .52
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . .52
• LOW AMBIENT
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
• COMPLETING RETURN AIR SMOKE SENSOR 
INSTALLATION
• ADDITIONAL APPLICATION DATA
Step 11 — Adjust Factory-Installed Options . . . . . .53
• SMOKE DETECTORS
• ECONOMIZERONE OCCUPANCY SWITCH
Step 12 — Install Accessories . . . . . . . . . . . . . . . . .53
Step 13 — Fan Speed Set Up . . . . . . . . . . . . . . . . . .53
• UNITS WITH ELECTRO-MECHANICAL CONTROLS
• UNITS WITH SYSTEMVU™ CONTROLS
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .59
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. 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, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
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
Pg 1 4-24
®
50FCQ*08-12
(R-410A) Refrigerant
Replaces: 50FCQ-8-12-01SI