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MULTIPOISE, CONDENSING
DIRECT VENT/NON-DIRECT VENT 58MCB, 58MTB, 58MVB, 58MXB
GAS FURNACE
USER’S INFORMATION MANUAL FOR OPERATION AND MAINTENANCE OF
YOUR GAS-FIRED FURNACE
USER: Please read all instructions in
NOTE TO INSTALLER:
the manual and retain all manuals for
THIS MANUAL MUST BE LEFT WITH THE
future reference.
EQUIPMENT USER.
!
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in
serious injury, death, or property damage.
— Do not store or
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TABLE OF CONTENTS WELCOME TO A NEW GENERATION OF COMFORT . . . . . . . 2 FURNACE COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 STARTING AND SHUTTING DOWN YOUR FURNACE . . . . . . . 5 Steps for Starting Your Furnace. . . . . . . . . . . . . . . . . . . . . . . . . .5-7 Shutting Down Your Furnace . . . . . . . . . . . . . . . . . . . . . . . . . .
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FURNACE COMPONENTS 1 Combustion-air intake connection to ensure contami- 17 nant-free air (right or left side). 2 3 2 Burner sight glass for viewing burner flame. 1 3 Burner assembly (inside). Operates with energy-saving 12 4 inshot burners and hot surface igniter for safe, 18 dependable heating. 5 5 4 Redundant gas valve. Safe and efficient. Features 1 gas control with 2 internal shutoff valves. Valve appearance 11 14 varies with furnace model. 16 5 Vent outlet. Uses PVC pipe to car
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SAFETY CONSIDERATIONS Recognize safety information. This is the safety-alert sym- bol ! . When you see this symbol on the furnace and in instructions or manuals, be alert to the potential for personal injury. Understand the signal words—DANGER, WARNING, CAUTION and NOTE. DANGER, WARNING and CAUTION are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could
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STARTING AND SHUTTING DOWN YOUR FURNACE ! WARNING Instead of a continuously burning pilot flame which wastes FIRE OR EXPLOSION HAZARD valuable energy, your furnace uses an automatic, hot surface Failure to follow this warning could result in fire, ignition system to light the burners each time the thermostat personal injury/death or property damage. starts your furnace. Follow these important safeguards: Do not keep combustible materials, gasoline, and other flammable liq
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ON OFF ON OFF N E E S O P L C O O F F OR A04151 For 58MTB and 58MVB 11 12 16 3. Turn OFF electrical supply to the furnace. (See Fig. 12.) 4. Remove main furnace door. (See Fig. 13.) For 58MCB and 58MXB 17 6. After waiting 5 minutes, turn the control switch on the gas A05099 control to the ON position. (See Fig. 16 or 17.) 13 5. The gas valve will have a control switch to turn off and on. Turn the control switch on the gas control to th
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ON OFF After the hot surface igniter is heated for 17 seconds, the gas valve permits gas to flow to the main burners. After ignition and a time delay of about 60 sec, the furnace blower will start. Variable-capacity furnaces start at low speed until the control makes the necessary adjustments to operate the blower at either the low- or high-heat speed. NOTE: If the burners fail to ignite after 4 attempts, the fur- nace control system will lock out. If lockout occurs, main b
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Only trained and qualified personnel should install, repair, or ser- • AIR FILTER LOCATED IN FILTER CABINET vice heating equipment. Untrained personnel can perform basic a. Remove filter cabinet door. (See Fig. 27 and 28.) maintenance functions such as cleaning and replacing air filters. NOTE: It will be necessary to remove 1 thumbscrew 3. Remove air filter from furnace. All other operations must be performed by trained and qual- ified service agency personnel. Observe safety preca
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37 38 31 32 b) Electronic air cleaner (EAC) – Refer to EAC Owner’s FURNACE AIR FILTER TABLE Manual for maintenance information. AIR FILTER LOCATED IN BLOWER COMPARTMENT 5. If washable filter, wash filter (if dirty) in sink, bathtub, or out- side with a garden hose. Always use cold tap water. A mild FURNACE FILTER SIZE (IN) liquid detergent may be used if necessary. Spray water CASING FILTER WIDTH (IN.) Side Return†* Bottom Return* TYPE through filter in the opposite
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Check the combustion-air intake and vent pipe on the outside HEADING SOUTH FOR THE WINTER? of your home for blockage. DON’T FORGET YOUR FURNACE! When dirt, soot, scale, or rust is allowed to build up, your furnace can suffer a loss of efficiency and perform improperly. Accumu- ! CAUTION lations on the main burners can result in firing out of normal sequence. This delayed ignition creates an alarmingly loud sound. UNIT AND PROPERTY DAMAGE HAZARD Failure to follow this caution may result in damage
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6. Insert field-supplied funnel into tube. BEFORE YOU REQUEST A SERVICE 7. Pour 1 quart of antifreeze into funnel/tube. Antifreeze CALL should run through inducer housing, overfill condensate If your furnace is not operating or not performing properly, trap, and flow into open field drain. (See Fig. 43.) you may save the expense of a service call by checking a few 8. Remove funnel and tube from inducer housing and things yourself before calling for service. replace drain connection cap and cla
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INSTALLATION DATA AIR CONDITIONER OR HEAT PUMP Date Installed OUTDOOR UNIT: Dealer Name Product No. Address Model No. City Serial No. INDOOR COIL: State Zip Product No. Telephone FURNACE Model No. Product No. Serial No. Model No. Serial No. TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classified section of your local telephone directory under the “Heating Equipment’’ or “Air Conditioning Contractors & Systems’’ heading for dealer listing by brand name. Have available the
