Rheem 15NARJR- Manuals

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...

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...

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...

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...

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 ...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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,...