Bryant 345MAV - Manual

NOTE: Read the entire instruction manual before starting the
installation.
Index
Page
DIMENSIONAL DRAWING........................................................2
SAFETY CONSIDERATIONS .....................................................3
Clearances to Combustibles......................................................3
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ....3-4
INTRODUCTION ..........................................................................4
APPLICATIONS ......................................................................4-11
General ......................................................................................4
Upflow Applications..............................................................4-7
Downflow Applications.........................................................7-8
Horizontal Left (Supply-Air Discharge) Applications .........8-9
Horizontal Right (Supply-Air Discharge) Applications .....9-11
LOCATION ............................................................................11-12
General...............................................................................11-12
Furnace Location Relative to Cooling Equipment ................12
Hazardous Locations...............................................................12
AIR FOR COMBUSTION AND VENTILATION ...............13-14
General ....................................................................................13
Unconfined Space ...................................................................13
Confined Space..................................................................13-14
INSTALLATION....................................................................14-17
Leveling Legs (If Desired)................................................14-15
Installation On a Concrete Slab .............................................15
Installation On a Combustible Floor (Downflow
Applications) ................................................................15-16
Installation In Horizontal Applications ..................................16
Filter Arrangement..................................................................17
Bottom Closure Panel.............................................................17
Gas Piping...............................................................................18
ELECTRICAL CONNECTIONS...........................................18-21
115-v Wiring......................................................................18-19
24-v Wiring........................................................................19-21
Accessories..............................................................................21
VENTING ...............................................................................21-28
Removal of Existing Furnaces from
Common Vent Systems.....................................................22
Combustion-Air and Vent Piping .....................................22-28
Vent Termination ....................................................................28
Multiventing ............................................................................28
CONDENSATE DRAIN ........................................................28-29
General...............................................................................28-29
Application ..............................................................................29
Condensate Drain Protection ..................................................29
SEQUENCE OF OPERATION..............................................30-31
Heating Mode..........................................................................30
Cooling Mode.............30 Continuous Blower Mode.............30
Heat Pump Mode ....................................................................30
Component Test ......................................................................31
START-UP PROCEDURES ..................................................31-37
General ....................................................................................31
Prime Condensate Trap With Water.................................31-32
Purge Gas Lines......................................................................32
Adjustments .......................................................................32-37
Set Gas Input Rate ............................................................32-36
Set Temperature Rise ........................................................36-37
Blower Off Delay (Heat Mode) .............................................37
Set Thermostat Heat Anticipator............................................37
CHECK SAFETY CONTROLS..................................................37
Check Primary Limit Control.................................................37
Check Pressure Switch ...........................................................37
CHECKLIST...........................................................................37-38
A93040
®
ama CANADIAN GAS ASSOCIATION
A PP R O VED
R
As an ENERGY STAR
Partner, BRYANT Heat-
ing & Cooling Systems
Company has determined
that this product meets the
ENERGY STAR guide-
lines for energy efficiency.
REGISTERED QUALITY SYSTEM
Fig. 1—Multipoise Orientations
A93041
UPFLOW
DOWNFLOW
HORIZONTAL
LEFT
AIRFLOW AIRFLOW
AIRFLOW
AIRFLOW
HORIZONTAL
RIGHT
installation, start-up,
and operating instructions
4-WAY MULTIPOISE
FIXED-CAPACITY
CONDENSING GAS FURNACE
Cancels: II 345M-40-1 II 345M-40-2
6-98
345MAV
Series B
—1—