Bryant Series B 345MAV Manuale Utente

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 ............................................................................11-13

General...............................................................................11-12
Furnace Location Relative to Cooling Equipment ................12
Hazardous Locations...............................................................13

AIR FOR COMBUSTION AND VENTILATION ...............13-14

General ....................................................................................13
Unconfined Space ...................................................................13
Confined Space..................................................................13-14

INSTALLATION....................................................................14-19

Leveling Legs (If Desired)................................................14-15
Installation On a Concrete Slab .............................................15
Installation On a Combustible Floor (Downflow

Applications)......................................................................15

Installation In Horizontal Applications ..................................16
Air Ducts............................................................................16-17
Filter Arrangement..................................................................17
Bottom Closure Panel........................................................17-18
Gas Piping..........................................................................18-19

ELECTRICAL CONNECTIONS...........................................19-22

115-v Wiring......................................................................20-21
24-v Wiring.............................................................................22
Accessories..............................................................................22

VENTING ...............................................................................22-29

Removal of Existing Furnaces from

Common Vent Systems................................................22-23

Combustion-Air and Vent Piping...........................................29
Vent Termination ....................................................................29
Multiventing ............................................................................29

CONDENSATE DRAIN ........................................................29-31

General ....................................................................................29

Application ..............................................................................29
Condensate Drain Protection.............................................29-31

SEQUENCE OF OPERATION..............................................31-32

Heating Mode..........................................................................31
Cooling Mode .........................................................................31
Continuous Blower Mode.......................................................31
Heat Pump Mode ....................................................................31
Component Test ......................................................................32

START-UP PROCEDURES ..................................................32-38

General ....................................................................................32
Prime Condensate Trap With Water.................................32-33
Purge Gas Lines......................................................................33
Adjustments .......................................................................33-38
Set Gas Input Rate ............................................................33-38
Set Temperature Rise..............................................................38
Blower Off Delay (Heat Mode) .............................................38
Set Thermostat Heat Anticipator............................................38

CHECK SAFETY CONTROLS..................................................39

Check Primary Limit Control.................................................39
Check Pressure Switch ...........................................................39

CHECKLIST...........................................................................39-40

A93040

®

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

A93041

UPFLOW

DOWNFLOW

HORIZONTAL

LEFT

AIRFLOW

AIRFLOW

AIRFLOW

AIRFLOW

HORIZONTAL

RIGHT

4-WAY MULTIPOISE
FIXED-CAPACITY
CONDENSING GAS FURNACE

Cancels:

II 345M-40-2

II 345M-40-3

5-99

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