Bryant 340MAV II. Furnace Location Relative to Cooling Equipment, III. Hazardous Locations

FRONT

°F °F

RETURN

AIR

MAX 85°F MIN 55°F

A93042

NOTE: These furnaces are designed for a minimum continuous return-air temperature of 60°F or intermittent operation down to 55°F such as when used with a night setback thermostat. Return-air temperature must not exceed a maximum of 85°F. Failure to follow these return-air temperature limits may affect reliability of heat exchangers, motors, and controls.

32°F MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED

A93058

CAUTION: If these furnaces are installed in an uncon- ditioned space where ambient temperatures may be 32°F or lower, freeze protection measures must be taken.

Provide ample space for servicing and cleaning. Always comply with minimum fire protection clearances shown on unit's clear- ance to combustibles label. (See Fig. 3.) Locate furnace where available electric power and gas supplies meet specifications on furnace rating plate.

FRONT

BACK

FRONT

B

A

C

K

A93043

II.FURNACE LOCATION RELATIVE TO COOLING EQUIPMENT

The cooling coil must be installed parallel with or on downstream side of furnace to avoid condensation in heat exchanger. When installed parallel with a furnace, dampers or other means used to control flow of air must prevent chilled air from entering furnace. If dampers are manually operated, they must be equipped with a means to prevent operation of either unit unless damper is in full-heat or full-cool position.

III.HAZARDOUS LOCATIONS

WARNING: Do not install furnace on its back. Safety control operation will be adversely affected. Never con- nect return-air ducts to back of furnace. Failure to follow this warning could result in fire, personal injury, or death.

CAUTION: If these furnaces are used during construc- tion when adhesives, sealers, and/or new carpets are being installed, make sure all combustion and circulating air requirements are followed. If operation of furnace is required during construction, use clean outside air for combustion and ventilation. Compounds of chlorine and fluorine, when burned with combustion air, form acids which will cause corrosion of heat exchangers. Some of these compounds are found in paneling, dry wall adhe- sives, paints, thinners, masonry cleaning materials, and many other solvents commonly used in construction process.

Excessive exposure to contaminated combustion air will result in safety and performance related problems.

18-IN. MINIMUM

TO BURNERS

A93044

WARNING: When furnace is installed in a residential garage, it must be installed so that burners and ignition sources are located a minimum of 18 in. above floor. The furnace must be located or protected to avoid physical damage by vehicles. When furnace is installed in a public garage, airplane hangar, or other building having a hazardous atmosphere, unit must be installed in accor- dance with requirements of National Fire Protection Association, Inc.

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