Assessments - 4, GPA: 4.5
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. .24 Double Vertical Combustion Air Intake and Vent Termination .....24 Direct Vent Air Intake Connection and Vent Connection .........25 Combustion Airflow Path Through The Furnace Casing .........25 Outside and Ambient Combustion Air........................26 Attic and Crawl Space Combustion Air Termination .............27 Gas Valve.............................................30 Reading Gas Pressure...................................30 Furnace Control Board...................................31 Furnace Control Event Schedule ...........................33 Wiring Diagram.........................................35 LIST OF TABLES Unit Clearances to Combustibles............................4 Coil Projection Dimensions - PC Series Coils ..................6 Cabinet and Duct Dimensions..............................8 Recommended Filter Sizes (High Velocity 600 FPM) ............8 Nominal Manifold Pressure - High Fire ......................10 Ratings & Physical / Electrical Data.........................11 Maximum Equivalent Pipe Length ..........................21 Elbow Dimensions......................................21 Equivalent Length of Fittings ..............................22 Combustion Air Intake and Vent Connection Size at Furnace (All Mod- els) ..................................................22 Estimated Free Area.....................................25 Unconfined Space Minimum Area in Square Inch ..............26 Free Area 26 Gas Rate (CU FT/HR) at Full ' Input . . . . . . . . . . . . . . . . . . . . . . . . . .29 Inlet Gas Pressure Range ................................30 Nominal Manifold Pressure................................30 These high efficiency, compact units employ induced combustion, reliable hot surface ignition and high heat transfer aluminized tubular heat exchangers. The units are factory shipped for installation in upflow or horizontal applications and may be converted for downflow applications. These furnaces are designed for residential installation in a basement, closet, alcove, attic, recreation room or garage and are also ideal for commercial applications. All units are factory assembled, wired and tested to assure safe dependable and economical installation and operation. These units are Category IV listed and may not be common vented with another gas appliance as allowed by the National Fuel Gas Code. SECTION I: SAFETY This is a safety alert symbol. When you see this symbol on labels or in manuals, be alert to the potential for personal injury. Understand and pay particular attention to the signal words DANGER, WARNING, or CAUTION. DANGER indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury. CAUTION indicates a potentially hazardous situation, which, if not avoided may result in minor or moderate injury. It is also used to alert against unsafe practices and hazards involving only property damage. AWARNING Improper installation may create a condition where the operation of the product could cause personal injury or property damage. Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Failure to carefully read and follow all instructions in this manual can result in furnace malfunction, death, personal injury and/or property damage. Only a qualified contractor, installer or service agency should install this product. A 364861-UIM-B-0708 364861-UIM-B-0708 SPECIFIC SAFETY RULES AND PRECAUTIONS 1. Only Natural gas or Propane (LP) gas are approved for use with this furnace. 2. Install this furnace only in a location and position as specified in these instructions. 3. A gas-fired furnace for installation in a residential garage must be installed as specified in these instructions. 4. Provide adequate combustion and ventilation air to the furnace space as specified in these instructions. 5. Combustion products must be discharged outdoors. Connect this furnace to an approved vent system only, as specified in SECTION VIII, "COMBUSTION AIR and VENT SYSTEM" of these instructions. 6. Test for gas leaks as specified in these instructions. AWARNING FIRE OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in serious injury, death or property damage. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for detection of leaks to check all connections. A fire or explosion may result causing property damage, personal injury or loss of life. 7. Always install the furnace to operate within the furnace's intended temperature rise range. Only connect the furnace to a duct system which has an external static pressure within the allowable range, as specified on the furnace rating plate. 8. When a furnace is installed so that supply ducts carry air circulat...
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