Carrier bryant 524F 07A Series Installation, Start-Up And Service Instructions Manual

5 24F*0 7 -1 2
P a c k a g e d A i r - H a n d l i n g U n i t s
w ith Pu ron ® ( R-4 1 0A ) Refr i g er an t
6 0 H z
Installation, Start-up and Service Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Moving and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Uncrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unit Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unit Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Refrigerant Piping Access . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
• THREE STAGE OPERATION
Connecting Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
• DISCHARGE CONNECTION
• RETURN CONNECTIONS
• OUTDOOR-AIR INLET CONNECTIONS
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
524F***A and 524F***H ONLY . . . . . . . . . . . . . . . . . . . 18
Adjusting TXV for Superheat
(524F***A and 524F***H only) . . . . . . . . . . . . . . . . . . 18
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SUPPLY FAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Supply Fan (Direct-Drive) . . . . . . . . . . . . . . . . . . . . . . . . . 19
• EVALUATING MOTOR SPEED
• SELECTING FAN SPEED
• FAN FAULT DETECTION
• FREEZE PROTECTION
Service Access for Supply Fan and Motor . . . . . . . . . . . . 21
• HORIZONTAL APPLICATIONS
• VERTICAL APPLICATIONS
Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cleaning Cooling Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cleaning Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Replacing Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Quarterly Inspection (and 30 days after initial start) . . . . . 26
• INDOOR SECTION
Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
• AIR CONDITIONING
FAN PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
START-UP CHECKLIST. . . . . . . . . . . . . . . . . . . . . . . .CL-1
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53524008-01 Printed in U.S.A. Form No. II524F-7-12-01 Rev B
SAFETY CONSIDERATIONS
Page 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
and in instructions or manuals, be alert to the potential for
personal injury.
Understand the signal
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.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning will result in personal injury
or death.
Before performing service or maintenance operations on
unit, turn off main power switch to unit and install lock(s)
and lockout tag(s). Ensure electrical service to rooftop unit
agrees with voltage and amperage listed on the unit rating
plate. Unit may have more than one power switch.
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury,
death and/or equipment damage.
These air handling units are dedicated voltages. Unlike
older air handler units the voltage of these units cannot be
changed in the field.
Pg 1
. When you see this symbol on the unit
words DANGER, WARNING,
DANGER
WARNING
10-24 Replaces: New