Bryant GAMA 331JAV Installation And Operating Instructions Manual

NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
Index
SAFETY CONSIDERATIONS .....................................................1
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE........................................................................1-2
INTRODUCTION.......................................................................2-3
Dimensional Drawing ...............................................................2
Clearances to Combustibles......................................................3
LOCATION....................................................................................4
General ......................................................................................4
Location Relative to Cooling Equipment ................................4
Hazardous Locations.................................................................4
AIR FOR COMBUSTION AND VENTILATION...................4-5
Unconfined Space .....................................................................4
Confined Space......................................................................4-5
SUPPLY-AIR PLENUM INSTALLATION
(DOWNFLOW) .....................................................................5-6
Downflow Installation .............................................................5
Installation On Combustible Floor........................................5-6
FILTER ARRANGEMENT .......................................................6-7
GAS PIPING...............................................................................6-8
ELECTRICAL CONNECTIONS...............................................8-9
115-v Wiring.............................................................................8
24-v Wiring............................................................................8-9
Accessories .............................................................................. 9
VENTING ......................................................................................9
START-UP, ADJUSTMENT, AND SAFETY CHECK.......10-20
General ....................................................................................10
Sequence of Operation ......................................................10-14
Adaptive Heating Mode ....................................................10-12
Non-Adaptive Heating Mode .................................................12
Cooling Mode .........................................................................13
Continuous Blower Mode.......................................................13
Heat Pump Mode...............................................................13-14
Defrost Mode ..........................................................................14
Start-Up Procedures ................................................................14
Adjustments .......................................................................14-20
Set Gas Input Rate ............................................................14-19
Set Temperature Rise ........................................................19-20
Set Thermostat Heat Anticipator............................................20
Check Safety Controls.......................................................20-21
Checklist..................................................................................21

SAFETY CONSIDERATIONS

Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified person-
nel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on
heating equipment, observe precautions in the literature, on tags,
and on labels attached to or shipped with the unit and other safety
precautions that may apply.
installation, start-up,
and operating instructions
DOWNFLOW 2-SPEED,
2-STAGE, INDUCED-COMBUSTION
GAS-FIRED FURNACE
Page
-1-
Cancels: II 331J-60-1
®
REGISTERED QUALITY SYSTEM
Follow all safety codes. In the United States, refer to the National
Fuel Gas Code (NFGC) NFPA No. 54-1996/ANSI Z223.1-1996.
In Canada, refer to the current edition of the National Standard of
Canada CAN/CGA-B149.1- and .2-M95 Natural Gas and Propane
Installation Codes (NSCNGPIC). Wear safety glasses and work
gloves. Have fire extinguisher available during start-up and
adjustment procedures and service calls.
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, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER 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 would result in minor personal
injury or product and property damage.
These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing residen-
tial construction practices. We require these instructions as a
minimum for a safe installation.
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE
CAUTION: Electrostatic discharge can affect electronic
components. Take precautions during furnace installation
and servicing to protect the furnace electronic control.
Precautions will prevent electrostatic discharges from
personnel and hand tools which are held during the
procedure. These precautions will help to avoid exposing
the control to electrostatic discharge by putting the
furnace, the control, and the person at the same electro-
static potential.
1. Disconnect all power to the furnace. DO NOT TOUCH
THE CONTROL OR ANY WIRE CONNECTED TO THE
CONTROL PRIOR TO DISCHARGING YOUR BODY'S
ELECTROSTATIC CHARGE TO GROUND.
331JAV
Series B
II 331J-60-2
12-97
ama
A PP R O VED
R
.