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USER’S INFORMATION MANUAL
MODEL 345MAV
CONDENSING GAS FURNACE
NOTE TO INSTALLER:
This manual must be left with the equipment user.
As an ENERGY STAR® Partner,
Bryant Heating & Cooling
Systems has determined that
this product meets the ENERGY
STAR® guidelines for energy
efficiency.
!
WARNING: If the information in this manual
is not followed exactly, a fire or explosion may
result causing property damage, personal injury or
loss of life.
— Do not store or use gasoline or other flammabl
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WELCOME TO A NEW GENERATION OF COMFORT Congratulations! In light of rising energy costs, the 345MAV Multipoise Condensing Gas Furnace is among the soundest investments today’s home- owner can make. Your new furnace is truly a triumph of technology in home heating. A revolutionary design employs 2 heat exchangers to “squeeze” out the maxi- mum amount of heat from the fuel con- sumed. In fact, your new furnace is so efficient, 90%* of the heat generated during combustion is c
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FURNACE COMPONENTS 13 1 1 Burner sight glass for viewing burner flame. 2 2 Burner assembly (inside). Operates with energy- 3 saving inshot burners and hot surface ignitor for safe, dependable heating. 4 14 5 3 Combustion-air intake connection (right or left side). 6 6 4 Redundant gas valve. Safe, efficient. Features 1 gas control with 2 internal shutoff valves. 7 15 5 Junction box for 115-v electrical power supply. 8 16 9 6 Vent outlet. Uses PVC pipe to carry vent gases from the furnace
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NOTE: The qualified installer IMPORTANT FACTS STARTING YOUR or agency must use only factory- Your gas furnace uses air adjacent to the FURNACE authorized replacement parts, kits, furnace for combustion and vents to the Instead of a continuously burning pilot and accessories when modifying this outside. Do not enclose it in an airtight flame which wastes valuable energy, product. room or seal it behind solid doors. It your furnace uses an automatic, hot m
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ON ON OFF OFF E S O L C O O F F F F O O F F F F 7. Replace main furnace door. STEPS FOR STARTING (See Fig. 14.) YOUR FURNACE 8. Turn on electrical supply to the fur- 1. Set your room thermostat to the low- nace and wait 1 minute. est temperature setting. (See Fig. 6.) (See Fig. 15.) 9. Open the external manual gas ® valve. (See Fig. 16.) 10.Set room thermostat to a tem- perature slightly above room temperature. This will auto- matically signal the furnace to start. 11.When th
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ON OFF N E P O O O F F F F 7. If the furnace is being shut down 12.Set your thermostat to the temper- because of a malfunction, call ature that satisfies your comfort your dealer as soon as possible. requirements. SUGGESTION: Setting the ther- ! CAUTION mostat back a few degrees and Furnace is not to be installed, compensating for the difference with warmer clothing can make a operated, and then turned off big difference in your fuel con- and left turned off in an unoc- sum
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b. Slide air filter out of furnace. 5. Inspect the filter. If torn, replace it. FILTERING OUT (See Fig. 24.) NOTE: If washable filter that was TROUBLE shipped with the furnace has been A dirty air filter will cause a loss of airflow replaced with an electronic air cleaner in your duct system. When excessive loss (EAC), refer to the EAC Owner’s Man- of airflow occurs, the furnace may cycle ual for maintenance information. on its safety controls. If this condition is lef
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31 HEADING SOUTH 28 FOR THE WINTER? 29 COMBUSTION AREA DON’T FORGET YOUR AND VENT SYSTEM FURNACE! Visually inspect the combustion area and vent system before each heating ! CAUTION season. Make sure that all PVC pipes If the furnace is installed in an leading into the combustion area and unconditioned space where vent are free from any cracks and sags. the ambient temperatures may Check the combustion-air intake adja- be 32°F or lower, freeze protec- cent to the furnace
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9. Replace main furnace door. • Check furnace for any obvious signs (See Fig. 28.) of deterioration. A CHECK-UP BEFORE YOU CHECKLIST REQUEST A Your furnace represents an important SERVICE CALL investment in your family’s comfort If your furnace is not operating or not and your home’s value. To keep it performing properly, you may save performing properly and as a preven- the expense of a service call by check- tative to future problems, have a trained ing a few things yourself before call
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vice, you will have ready access to the unit. The LED code can be seen by power supply will terminate LED diag- information needed by your service removing the access door and viewing nostic code display. representative. LED(s) through the view port in the blower access panel. This furnace has an LED operation To decipher the meaning of the LED and fault code display to aid the code, and suggested action, the follow- installer, service technician, or home- NOTE: Removing the blower access
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Cancels: OM05-29 OM05-31 © 2000 Bryant Heating & Cooling Systems, 7310 W. Morris St., Indpls., IN 46231 12 Printed in U.S.A. Catalog No. 5334-509 10-00
