Bryant 351DAS, Installation, Start-Up & Operating Instructions

Page: 1 / 36

NOTE: Read the entire instruction manual before starting the
installation.
Index Page
DIMENSIONAL DRAWING........................................................2
SAFETY CONSIDERATIONS..................................................1-3
Clearances to Combustibles......................................................3
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ....3-4
INTRODUCTION.......................................................................4-5
APPLICATIONS ........................................................................4-7
General ......................................................................................5
Condensate Trap Installation.................................................5-7
LOCATION ................................................................................8-9
General...................................................................................8-9
Furnace Location Relative to Cooling Equipment ..................9
Hazardous Locations.................................................................9
INSTALLATION......................................................................9-12
Installation In Downflow Application ................................9-10
Filter Arrangement..................................................................11
Gas Piping..........................................................................11-12
ELECTRICAL CONNECTIONS...........................................12-13
115-v Wiring...........................................................................13
24-v Wiring.............................................................................13
Accessories..............................................................................13
Wiring Diagram ......................................................................14
DIRECT VENTING ...............................................................13-21
Removal of Existing Furnaces from
Common Vent Systems................................................13-15
Combustion-Air and Vent Piping .....................................15-19
Concentric Vent and Combustion-Air Termination
Kit Installation..............................................................19-21
CONDENSATE DRAIN..............................................................21
General ....................................................................................21
Application ..............................................................................21
Condensate Drain Protection ..................................................21
SEQUENCE OF OPERATION..............................................21-23
Heating Mode ....................................................................21-22
Cooling Mode .........................................................................22
Continuous Blower Mode.......................................................22
Heat Pump Mode ....................................................................22
Component Test.................................................................22-23
START-UP PROCEDURES ..................................................23-27
General ....................................................................................23
Prime Condensate Trap With Water ......................................23
Purge Gas Lines......................................................................23
Adjustments .......................................................................27-32
Set Gas Input Rate ............................................................27-32
Set Temperature Rise..............................................................32
Blower Off Delay (Heat Mode) .............................................32
Set Thermostat Heat Anticipator............................................32
CHECK SAFETY CONTROLS ............................................32-33
Check Primary Limit Control.................................................32
Check Pressure Switch ...........................................................33
CHECKLIST ................................................................................33
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 clean-
ing and replacing air filters. All other operations must be per-
formed by trained service personnel. When working on heating
equipment, observe precautions in literature, on tags, and on labels
attached to or shipped with 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 unit or in instructions and manuals,
be alert to 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 most serious hazards which will result in severe
A93040
®
ama
CANADIAN GAS ASSOCIATION
A PP R O VED
R
As an ENERGY STAR
SM
Partner, Bryant Heating &
Cooling
Systems Com-
pany has determined that
this product meets the EN-
ERGY STAR guidelines
for energy efficiency.
REGISTERED QUALITY SYSTEM
installation, start-up,
and operating instructions
DOWNFLOW MANUFACTURED (MOBILE)
AND MODULAR HOME DIRECT-VENT
CONDENSING GAS FURNACE
Cancels: New II 351D-80-1
2-99
351DAS
Series A
—1—