Bryant Legacy 677C**C Series, Installation Instructions Manual

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1
677C----C
LEGACY
t
14 SEER SINGLE-- PACKAGED HYBRID HEAT
r
DUAL
FUEL SYSTEM WITH PURON
r
(R--410A) REFRIGERANT
SINGLE PHASE 2--5 NOMINAL TONS (SIZES 24--60)
THREE PHASE 3--5 NOMINAL TONS (SIZES 36--60)
Installation Instructions
IMPORTANT : Effective January 1, 2015, all split system and
packaged air conditioners must be installed pursuant to applicable
regional efficiency standards issued by the Department of Energy.
NOTE
: Read the entire instruction manual before starting the
installation.
NOTE : Installer: Make sure the Owner’s Manual and Service
Instructions are left with the unit after installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1 . . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVING AND INSTALLATION 2--13 . . . . . . . . . . . . . . . . .
Check Equipment 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identify Unit 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Shipment 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Unit Support 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roof Curb 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slab Mount 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Fabricate Ductwork 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Clearances 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rig and Place Unit 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect Condensate Drain 7 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Flue Hood 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Gas Piping 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Duct Connections 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Units for Downflow (Vertical)
Discharge 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Electrical Connections 12 . . . . . . . . . . . . . . . . . . . . . . . .
High--Voltage Connections 12 . . . . . . . . . . . . . . . . . . . . . . . .
Special Procedures for 208--V Operation 12 . . . . . . . . . . . . . .
Control Voltage Connections 12 . . . . . . . . . . . . . . . . . . . . . . .
Balance Point Setting Thermidistat or Hybrid Heat
Thermostat 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transformer Protection 13 . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRE--START--UP 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP 14--19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check for Refrigerant Leaks 14 . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Sequence of Operation 14 . . . . . . . . . . . . . . . . . . . . . . . . .
Start--Up Heating and Make Adjustments 15 . . . . . . . . . . . . . . .
Checking Heating Control 15 . . . . . . . . . . . . . . . . . . . . . . . . .
Check Gas Input 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjust Gas Input 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Burner Flame 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start--Up Cooling and Make Adjustments 17 . . . . . . . . . . . . . . .
Checking Cooling Control Operation 17 . . . . . . . . . . . . . . . .
Checking and Adjusting Refrigerant 17 . . . . . . . . . . . . . . . . .
Indoor Airflow and Airflow Adjustments 18 . . . . . . . . . . . . .
Continuous Fan Operation 19 . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE 49--52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Filter 49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Blower and Motor 49 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flue Gas Passageways 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limit Switch 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Burner Ignition 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Burners 50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outdoor Coil, Indoor Coil, & Condensate Drain Pan 50 . . . . . .
A09034
Fig. 1 -- Unit 677C----C
Outdoor Fan 51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Controls and Wiring 51 . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant Circuit 51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Input 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Airflow 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Defrost Thermostat 52 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Puron
R
Items 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP CHECKLIST 56 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, 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, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local
building codes, the current editions of the National Fuel Gas Code
(NFGC) NFPA 54/ANSI Z223.1, and the National Electrical Code
(NEC) NFPA 70.
In Canada refer to the current editions of the National Standards of
Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane
Installation codes, and Canadian Electrical Code CSA C22.1
Recognize safety information. This is the safety--alert symbol .
When you see this symbol on the unit and in instructions or manu-
als, be alert to the potential for personal injury. Understand these
signal words: DANGER, WARNING, and CAUTION. 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 per-