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USER’S INFORMATION MANUAL
USER’S INFORMATION MANUAL
MODELS 373LAV, 376CAV
DOWNFLOW/HORIZONTAL and
383KAV, 395CAV UPFLOW GAS FURNACE
NOTE TO INSTALLER:
This manual must be left with the
equipment user.
!
WARNING: If the information in this man-
ual 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 flammable
vapors and liquids in the vicinity of this or any
Upflow
other appliance.
— W
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WELCOME TO TODAY’S GENERATION OF COMFORT Congratulations! Your new, higher efficiency gas furnace is a sound investment which will reward you and your family with years of warm memories winter after winter. Not only is your new furnace energy efficient, it is also extremely reliable. Spend just a few minutes with this booklet to learn about the operation of your new furnace—and the small amount of maintenance it takes to keep it operating at peak efficiency. Years went into t
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DOWNFLOW/HORIZONTAL FURNACE COMPONENTS 1 1 Manual-Reset Auxiliary Limit Switch (When Used) 2 Blower and Blower Motor 2 3 Relief Box 4 Gas Valve Control Knob or Electric Switch (On/Off) 8 5 Gas Valve 9 6 Gas Burner 7 Rating Plate 3 8 Blower Door Safety Switch 9 Blocked Vent Safeguard Tube and Switch 10 4 10 Gas Manifold 11 5 11 Manual Reset Limit Switch (2) 6 12 Hot Surface Ignitor 13 Flame Sensor 7 12 13 4 many products around the home, such nace is left unattended for an
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E S O L C safety-alert symbol. DANGER identi- • CHECK AIR FILTER: Before at- fies the most serious hazards which will tempting to start your furnace, be sure result in severe personal injury or the furnace filter is clean and in place. death. WARNING signifies hazards (See the maintenance section of this which could result in personal injury or manual.) Then proceed as follows: death. CAUTION is used to identify unsafe practices which would result in minor pers
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ON ON OFF OFF N E P O O O F F F F O O F F F F 11. After 15 to 70 sec, the gas valve permits gas to flow to the main burners where it is ignited. Hot flames begin to warm the furnace’s heat exchanger. After a time delay of approximately 45 sec, the fur- nace blower is switched on. OR NOTE: If the main burners fail to ig- nite, the furnace control system will go through 3 more ignition cycles. Then, if burners fail to ignite, the system will lockout. If lockout occurs, or th
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ON OFF O O F F F F furnace size with the proper filter size. 5. Turn the control knob or switch on PERFORMING ROUTINE the gas valve to the OFF position. MAINTENANCE ! CAUTION (See Fig. 22 or 23.) With the proper maintenance and care, Never operate your furnace your furnace will operate economically without a filter in place. Doing and dependably. Basic maintenance, ® so may damage the furnace which can easily be accomplished by blower motor. An accumula- someone who fol
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3. Remove air filter from furnace. be required in some models. The pro- cedure listed above may be used to • AIR FILTER LOCATED IN AIR FILTER LOCATED IN FILTER CABINET remove side filters. BLOWER COMPARTMENT: FILTER CABINET FILTER SIZE a) Slide filter retainer sideways un- HEIGHT (IN) (IN.) FILTER TYPE til it is free of latch. (See Fig. 24) (1) 16 x 25 x 1* or Cleanable 16 (1) 16 x 25 x 4-5/16 Disposable b) Gently remove air filter and carefully turn the dirty side
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connection area, and the vent pipe for rust. 29 NOTE: If dirt, rust, soot, or scale accu- mulations are found, call your servic- ing dealer. DO NOT OPERATE THE 34 FURNACE. 3. Inspect the vent pipe for a sag, holes, or a disconnection. A hori- 31 zontal vent pipe must slope up- ward. If rusty joints or seams, or signs of water leakages are found call your dealer for service. ! WARNING If holes are found—or if the vent pipe is obstructed or is not connected—toxic fumes can escape int
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open? Does the lever point in the same will shut off the furnace. Reset the 4. Inspection, cleaning, and lubrica- direction that the pipe runs (open)? Or switch(es) by pushing the button on the tion (when required) of the blower is it at right angles (closed)? switch. If the switch trips a second motor and wheel. time, turn off the furnace and call for NOTE: Refer to the unit Service Proce- NOTE: Before proceeding with the service. dures for blower motor oiling informa- next checks, turn OFF
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INSTALLATION DATA SPLIT-SYSTEM Date Installed OUTDOOR UNIT: Dealer Name Product No. Address Model No. City Serial No. State Zip INDOOR COIL: Telephone Product No. Model No. FURNACE Serial No. Product No. Model No. Serial No. Cancels: OM04-33 OM04-35 12 © 2000 Bryant Heating & Cooling Systems, 7310 W. Morris St. Indpls., IN 46231 PRINTED IN U.S.A. Catalog No. 5337-309 10-00
