Bryant 349HAV Series - User Manual

NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
INDEX
Page
SAFETY CONSIDERATIONS ................................................1-2
Clearances From Combustible Materials.................................1
INTRODUCTION.......................................................................2-3
Dimensional Drawing...............................................................2
LOCATION....................................................................................3
General ......................................................................................3
Furnace Location Relative to Cooling Equipment ..................3
Hazardous Locations.................................................................3
AIR FOR COMBUSTION AND VENTILATION...................3-5
General...................................................................................3-4
Unconfined Space.....................................................................4
Confined Space......................................................................4-5
Contaminated Combustion Air.................................................5
INSTALLATION........................................................................5-9
Duct Work Recommendations..................................................5
Horizontal Attic Installation.....................................................6
Horizontal Crawlspace Installation ..........................................6
Filter Arrangement....................................................................6
Gas Piping..............................................................................6-7
Reversing Procedure..............................................................7-9
ELECTRICAL CONNECTIONS.............................................9-11
115-v Wiring........................................................................9-11
Wiring Diagram ......................................................................10
24-v Wiring.............................................................................11
Accessories..............................................................................11
VENTING...............................................................................11-13
General Venting Requirements.........................................11-12
Pre-Installation Vent System Inspection................................12
Removal of Existing Furnace from Common
Venting System..................................................................12
Metal Vent Installations..........................................................12
Masonry Chimney Installations..............................................12
Multistory Installations...........................................................12
Sidewall Venting Installations................................................12
SEQUENCE OF OPERATION...................................................13
Heating Mode..........................................................................13
Cooling Mode .........................................................................13
START-UP, ADJUSTMENT, AND SAFETY CHECK.......13-18
General ....................................................................................13
Remove Shipping Bracket......................................................13
Purge Gas Lines......................................................................13
Operational Checkout .............................................................13
Adjustments .......................................................................14-17
Adjust Pilot Flame..................................................................14
Set Gas Input Rate ............................................................14-17
Set Temperature Rise..............................................................17
Set Blower Off Delay.............................................................17
Set Thermostat Heat Anticipator............................................17
Check Safety Controls.......................................................17-18
CHECKLIST ................................................................................18
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.
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA No.
54-1996/ANSI Z223.1-1996 and the Installation Standards, Warm
Air Heating and Air Conditioning Systems (NFPA 90B)
ANSI/NFPA 90B. 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 furnace 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 a hazard 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.
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CANADIAN GAS ASSOCIATION
APPROVED
R
TABLE 1—ATTIC, CLOSET*, OR ALCOVE CLEARANCES
FROM COMBUSTIBLE MATERIALS (IN.)
UNIT SIZE 050, 075, 100, & 125
Sides 6
Back 6
Top of Plenum 2
Vent Connector 6
Front Casing 6†
Front Service 30
* For closet installations, refer to Air for Combustion and Ventilation section.
† Measured from end of inducer motor.
WARNING: Failure to comply with all of the above
clearances will create a fire hazard.
installation, start-up,
and operating instructions
HORIZONTAL INDUCED-COMBUSTION
GAS FURNACE
SIZES 050—125, SERIES B
Cancels: II 349H-50-4 II 349H-50-5
6-98
349HAV
—1—
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Bryant 349HAV Series Specifications