Page 2 - INSTALLATION CHECKLIST
2 Before beginning any troubleshooting procedure, complete the following installation checklist. A furnace malfunction issometimes caused by an improper installation. By completing this checklist, the problem may be found and corrected. Makecopies of the checklist and complete one for every Low Prof...
Page 3 - TO INSURE PROPER INSTALLATION AND OPERATION OF; CONTENTS
3 3 IMPORTANT: TO INSURE PROPER INSTALLATION AND OPERATION OF THIS PRODUCT, COMPLETELY READ ALL INSTRUCTIONS PRIOR TOATTEMPTING TO ASSEMBLE, INSTALL, OPERATE, MAINTAIN OR REPAIRTHIS PRODUCT. UPON UNPACKING OF THE FURNACE, INSPECT ALLPARTS FOR DAMAGE PRIOR TO INSTALLATION AND START-UP. CONTENTS Safet...
Page 4 - SAFETY INFORMATION
4 USE ONLY WITH TYPE OF GASAPPROVED FOR THIS FURNACE.REFER TO THE FURNACE RATINGPLATE. INSTALL THIS FURNACE ONLY INA LOCATION AND POSITION ASSPECIFIED IN THE LOCATIONREQUIREMENTS ANDCONSIDERATIONS SECTION OFTHESE INSTRUCTIONS. PROVIDEADEQUATE COMBUSTION ANDVENTILATION AIR TO THEFURNACE SPACE AS SPEC...
Page 5 - This furnace is shipped with; LOCATION; This furnace is not; IMPORTANT; IMPORTANT; If installing in a utility; GENERAL INFORMATION; WARNING; FIGURE 1; WARNING
5 GENERAL INFORMATION DO NOT USE THIS FURNACEDURING CONSTRUCTION IF AIRLADEN CORROSIVE COMPOUNDSARE PRESENT SUCH AS CHLORINEAND FLUORINE. OTHERWISE,PROVISIONS MUST BE TAKEN TOPROVIDE CLEAN,UNCONTAMINATED COMBUSTIONAND VENTILATION AIR TO THEFURNACE. FURNACECOMBUSTION AND VENTILATIONAIR CONTAMINATED W...
Page 6 - FIGURE 2; This furnace is not approved or recommended for
6 CLEARANCE TO COMBUSTIBLE MA TERIAL (INCHES) UPFLOW/HORIZONT AL MODELS TOP LEFT SIDE FRONT RIGHT SIDE BOTTOM RETURN AIR SUPPLY AIR 26 13 / 16 26 5 / 8 24 11 / 32 24 11 / 32 19 / 32 9 / 16 24 7 / 16 28 1 / 16 26 5 / 8 14 3 / 8 11 1 / 2 34 1 5 / 8 DIA. 23 15 20 D 7 / 8 DIA. 7 / 8 DIA. 19 / 32 19 / 32...
Page 7 - DUCTING; Some high efficiency; When using outside air,; SITE SELECTION; CAUTION; TABLE 1
7 CLEARANCE –ACCESSIBILITY The design of forced air furnaces withinput ratings as listed in the tables onthe following pages are certified byCSA for the clearances to combustiblematerials shown in inches. See name/rating plate and clearancelabel for specific model number andclearance information. Se...
Page 9 - FIGURE 3; FIGURE 4; COMBUSTION AIR; Air for combustion and; COMBUSTION AND VENTILATION AIR; This is not a direct vent furnace. Review venting instructions
9 THIS FURNACE AND ANY OTHERFUEL-BURNING APPLIANCE MUSTBE PROVIDED WITH ENOUGHFRESH AIR FOR PROPERCOMBUSTION AND VENTILATIONOF THE FLUE GASES. MOSTHOMES WILL REQUIRE THATOUTSIDE AIR BE SUPPLIED INTOTHE FURNACE AREA. FAILURE TODO SO CAN CAUSE DEATH FROMCARBON MONOXIDE POISONING. Adequate facilities f...
Page 10 - Using indoor air for combustion.; FIGURE 5; Air should not be taken; AIR INTAKE PIPE CONNECTION; Never take
10 Combustion air must be free of acidforming chemicals; such as sulphur,fluorine and chlorine. These elementsare found in aerosol sprays,detergents, bleaches, cleaningsolvents, air fresheners, paint andvarnish removers, refrigerants andmany other commercial and householdproducts. Vapors from these ...
Page 11 - If the furnace is in a
11 a. One square inch for each 3000 BTUH of the total input rating of allequipment located in the enclosure, AND b. Not less than the sum of the areas of all vent connectors in the confinedspace. IMPORTANT: If the furnace is in a location with an exhaust fan, theremust be sufficient ventilation to p...
Page 12 - FIGURE 7; FIGURE 8; In applications using Method 3
12 FIGURE 7 OUTSIDE AIR USING A HORIZONTAL INLET & OUTLET FIGURE 8 COMBUSTION AIR FITTING – OPTIONAL ATTIC COMBUSTION AIR PULL B: Method 3 For the optimum in quiet operation,attic air may be brought directly to thefurnace. NOTE: In applications using Method 3 for combustion air, the attic must b...
Page 13 - DIAMETER; important; VENTING
13 GENERAL INFORMATION The furnace must be vented inaccordance with these instructions,National Fuel Gas Code, ANSI Z223.1and/or the Natural Gas InstallationCode, CSA-B149.1 & .2 andrequirements or codes of the local utilityor other authority having jurisdiction. DEVICES ATTACHED TO THE FLUEOR V...
Page 14 - “B-1” VERTICAL VENTING; ” per foot away from the
14 “B-1” VERTICAL VENTING Type “B-1” vents must be installed inaccordance with the terms of theirlistings and the vent manufacturer’sinstructions. “B-1” vents must be supported andspaced in accordance with their listingsand the manufacturer’s instructions. Allvents must be supported to maintaintheir...
Page 15 - EXISTING VENT SYSTEMS; ALWAYS INSPECT; the; POWER VENT SYSTEMS
15 EXISTING VENT SYSTEMS IMPORTANT RETROFITVENTING INSTRUCTIONS If this furnace is a replacementinstallation, ALWAYS INSPECT the existing vent system to be sure thereare no obstructions, blockages, orsigns of corrosion. When the existing furnace is removedfrom a venting system serving otherappliance...
Page 16 - GAS SUPPLY AND PIPING; GAS SUPPLY; Refer to Table 3 for the recom-; The valve
16 FIGURE 12 GAS PIPING INSTALLATION GAS PIPE INSTALLATION GAS SUPPLY AND PIPING GAS SUPPLY THIS FURNACE IS EQUIPPED ATTHE FACTORY FOR USE ONNATURAL GAS ONLY. CONVERSIONTO LP GAS REQUIRES A SPECIALKIT AVAILABLE FROM THEDISTRIBUTOR. FAILURE TO USETHE PROPER CONVERSION KIT CANCAUSE FIRE, CARBON MONOXI...
Page 17 - GAS PRESSURE; The maximum gas; This pressure must be; Factory installed orifices; LP GAS; NOx MODELS
TABLE 3 TABLE 4 NATURAL GAS ORIFICE DRILL SIZE (4% PER 1000 FT. DE-RATE) BURNER INPUT (PER BURNER) 25,000 BTU @ SEA LEVEL 17 GAS PRESSURE IMPORTANT: The maximum gas supply pressure to the furnace shouldbe 10.5” w.c. for natural gas and 13”w.c. for LP gas. Natural gas supply pressure shouldoperate be...
Page 18 - TABLE 6; SETTING GAS PRESSURE; Supply Gas Pressure Measurement.; TABLE 5
18 TABLE 6 LP GAS PIPE CAPACITY TABLE (CU. FT./HR.) SETTING GAS PRESSURE The maximum gas supply pressure tothe furnace should be 10.5 ” w.c. natural gas, or 13 ” w.c. LP gas. The minimum supply gas pressure to thegas valve should be 5" w.c. natural gasor 11" w.c. LP gas. A properlycalibrated...
Page 19 - TABLE 8; TABLE 7; NATURAL GAS; TO CHANGE ORIFICE SPUDS:; Actual input rates must
19 TABLE 8 TABLE 7 ALTERNATE METHOD FOR CANADIAN HIGH-ALTITUDE DERATE NATURAL GAS LP GAS FIGURE 14 MANIFOLD PRESSURE-CHANGE LABEL THE MANIFOLD PRESSURE OF THIS APPLIANCE HAS BEEN FIELD ADJUSTED TO OBTAIN THE CORRECT INPUT RATING FOR INSTALLATION AT ALTITUDES BETWEEN 2,000 FEET AND 4,500 FEET ELEVATI...
Page 20 - The furnace must be; ELECTRICAL CONNECTIONS; The electrical junction box; ELECTRICAL WIRING; HEAT ANTICIPATOR SETTINGS; An isolation relay may assist
20 TURN OFF ELECTRIC POWER ATTHE FUSE BOX OR SERVICE PANELBEFORE MAKING ANYELECTRICAL CONNECTIONS. ALSO, THE GROUND CONNECTIONMUST BE COMPLETED BEFOREMAKING LINE VOLTAGECONNECTIONS. FAILURE TO DOSO CAN RESULT IN ELECTRICALSHOCK, SEVERE PERSONALINJURY OR DEATH. IMPORTANT: The furnace must be installe...
Page 21 - ONLY TWIN
21 FIELD INSTALLED OPTIONACCESSORIES ELECTRONIC AIR CLEANER Electronic air cleaner line voltagepower can be supplied from the screwterminal “EAC” and a line voltageneutral screw terminal on the controlboard. Power is on any time the bloweris activated. See Figure 16. HUMIDIFIER Humidifier line volta...
Page 24 - LIGHTING INSTRUCTIONS; TO START FURNACE; SEQUENCE OF OPERATION; he gas valve opens for a 8
24 LIGHTING INSTRUCTIONS This appliance is equipped with a directspark ignition device. This device lightsthe main burners each time the roomthermostat (closes) calls for heat. Seelighting instructions on the furnace. TO START FURNACE 1. BE SURE THAT THE MANUAL GASVALVE HAS BEEN IN THE “OFF”POSITION...
Page 25 - SETTING BLOWER TIMINGS; COOL — connect desired cooling; Always check air
25 SETTING BLOWER TIMINGS The UT Electronic Controls controlboards have four quick connectterminals for connecting the motorspeed leads. These are: 1. FAN SPEED* — motor runs on this speed when the thermostat is in the“FAN” position. 2. COOL — connect desired cooling speed. 3. HEAT — connect desired...
Page 26 - AIR FLOW; Airflow must be; TEMPERATURE RISE CHECK; The measured; LUBRICATION
26 AIR FLOW The importance of proper air flow overthe heat exchanger cannot be overemphasized. One of the most commoncauses of heat exchanger failure isoverheating due to low air flow. An airflow table is located inside the blowerdoor and on the following pages. IMPORTANT: Airflow must be checked at...
Page 28 - SAFETY FEATURES
28 LIMIT CONTROL The high limit cut-off temperature is setat the factory and cannot be adjusted.The temperature setting prevents theair temperature leaving the furnacefrom exceeding the maximum outlet airtemperature, which, if exceeded, willshut the furnace down. Some reasonswhich could cause the ou...
Page 29 - FILTERS; FILTER SIZES; MAINTENANCE; removal of 3; are not
29 FIGURE 23 FILTER RETAINING ROD DISCONNECT MAIN ELECTRICALPOWER TO THE UNIT BEFOREATTEMPTING ANY MAINTENANCE.FAILURE TO DO SO CAN CAUSEELECTRICAL SHOCK RESULTINGIN SEVERE PERSONAL INJURY ORDEATH. FILTERS Filter application and placement arecritical to airflow, which may affect theheating and cooli...
Page 31 - Do not operate the; Advise The Customer To:; Replace all blower; ANNUAL INSPECTION; It is recommended; REPLACEMENT PARTS
31 IMPORTANT: Do not operate the system without filters. A portion of thedust entrained in the air may temporarilylodge in the air duct runs and at thesupply registers. Any recirculated dustparticles will be heated and charred bycontact with the furnace heatexchanger. This residue will soilceilings,...
