Nordyne SC Series Installation Instructions Manual
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Nordyne SC Series Installation Instructions Manual

Nordyne SC Series Installation Instructions Manual

Single stage condensing gas furnaces
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Single Stage Condensing Gas Furnaces
92.1% & 95.0% AFUE
INSTALLATION INSTRUCTIONS
*SL & *SM Downflow
Models
Model
Models
WARNING:
AVERTISSEMENT
FIRE OR EXPLOSION HAZARD
WHAT TO DO IF YOU SMELL GAS
instructions.
incendies.
DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

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Summary of Contents for Nordyne SC Series

  • Page 1 Single Stage Condensing Gas Furnaces 92.1% & 95.0% AFUE INSTALLATION INSTRUCTIONS *SL & *SM Downflow Models Model Models WARNING: AVERTISSEMENT FIRE OR EXPLOSION HAZARD WHAT TO DO IF YOU SMELL GAS instructions. incendies. DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Inducer & Venting Options........18 IMPORTANT SAFETY INFORMATION ..... 3 Inducer Assembly Rotation ........18 CODES & REQUIREMENTS ........4 Pressure Switch Tubing........18 Combustion Air Quality..........5 Alternate Pressure Switch Location ..... 18 Heating Load ............5 Accessories .............

  • Page 3: Important Safety Information

    *SC & *SL Series (92.1% AFUE) Figure 34. Horizontal & Vertical Venting ....44 WARNING: Figure 35. Venting Options for Upflow Installations (*SC Series) ....45 Figure 36. Venting Options for 1 Pipe Horizontal Installations (*SC Series)... 46 Figure 37. Venting Options for 2-Pipe Horizontal Installations (*SC Series)...

  • Page 4: Codes & Requirements

    essential that only qualified individuals install, service, or external pressure rise of 0.5 inches of water column. maintain this equipment. If you do not posses mechanical Consult Table Table Table 8, & Table 9 (pages skills or tools, call your local dealer for assistance. 35 - 38), and the rating plate for the proper circulating air flow and temperature rise.

  • Page 5: Heating Load

    2. For direct-vent appliances, mechanical-vent heating appliances or domestic hot water equipment where the bottom of the vent terminal and the air intake is installed CAUTION: above four feet above grade the following requirements must be satisfied: a.) A (CO) detector and alarm shall be placed on each floor level where there are bedrooms.

  • Page 6: Installation In A Garage

    Installation in a Garage WARNING: CAUTION: This gas-fired furnace may be installed in a residential garage with the provision that the burners and igniter Operating gas furnaces in construction environments can are located no less than 18 inches (457mm) above the cause a variety of problems with the furnace.

  • Page 7: Combustion Air & Venting Requirements

    COMBUSTION AIR & VENTING REQUIREMENTS WARNING: AVERTISSEMENT: CARBON MONOXIDE POISONING HAZARD MONOXYDE DE CARBONED National Fuel Gas Code, ANSI Z223.1/NFPA 54 or the CSA B149.1, Natural Gas and Propane Installation Codes National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Codes.

  • Page 8: Direct Vent Furnaces

    Another important consideration when selecting one or two pipe installation is the quality of the Indoor air which can sometimes be contaminated with various household chemicals . These chemicals can cause severe corrosion in the furnace combustion system. A 2-pipe installation has the additional advantage that it isolates the system from the effects of negative pressure in the house.

  • Page 9: Air From Inside

    by the total input rate of all appliances in the space. In all cases, the minimum dimension of any combustion air Vent or Chimney opening is 3 inches. Ventilation Louvers Air From Inside (each end of attic) If combustion air is taken from the heated space, the two Outlet openings must each have a free area of at least one square NOTE: Air openings shall...

  • Page 10: Alternate Method Of Providing Air From Outside

    Alternate Method of Providing Air from Outside If acceptable under local Codes, it is permitted to provide Vent or outside air using one opening (See NFGC). Generally, Chimney confined spaces must have two openings in the space for combustion air. One opening must be within 12 inches of Air Duct Water Air Ducts must be...

  • Page 11: Vent Pipe Material

    Category IV appliances operate with positive vent pressure Vent Pipe Length & Diameter and therefore require vent systems which are thoroughly In order for the furnace to operate properly, the combustion sealed. They also produce liquid condensate, which is air and vent piping must not be excessively restrictive. slightly acidic and can cause severe corrosion of ordinary venting materials.

  • Page 12: Vent Pipe Installation

    Vent Pipe Installation Outdoor Terminations - Horizontal Venting be installed as shown in Figure 7 & Figure 8 and in CAUTION: accordance with these instructions: NFGC, ANSI 2223.1/NFPA 54 and/or the CSA B149.1, Natural Gas and Propane Installation Code. Table 16 (page 43) lists the necessary distances from the vent This furnace has been certified for installation with zero termination to windows and building air intakes.

  • Page 13: Outdoor Terminations - Vertical Venting

    Outdoor Terminations - Vertical Venting wall that experiences the least exposure to winter winds. Termination spacing requirements from the roof and from each other are shown in Figure 10. The roof penetration horizontally from any electric meter, gas meter, regulator must be properly flashed and waterproofed with a plumbing and any relief equipment.

  • Page 14: Existing Installations

    CIRCULATING AIR REQUIREMENTS Winter Design WARNING: *NOTE: Insulation thickness greater than 3/8 inch, based on an R value of 3.5 (ft x F x hr) / (BTU x in.) Vent Protection Existing Installations When an existing furnace is removed from a vent system serving other appliances, the existing vent system may not be sized properly to vent the remaining appliances (For example: water heater).

  • Page 15: Return Air Connections

    and outdoor air is used, the ducts and damper system 4 knockouts to expose the blower assembly. Position must be designed so that the return air supply to the the return air duct over the opening and secure to the side with sheet metal screws.

  • Page 16: Furnace Installation

    FURNACE INSTALLATION recommended that the drip pan extend at least 12 inches past the top and front of the furnace. *SC & *SD series gas furnaces offer a wide range of installation options, including installation in the upflow or If suspending the furnace from the ceiling, assemble a horizontal positions with either right, left, or upflow return support frame (Figure...

  • Page 17: Downflow Furnaces

    WARNING: To install an *SL & *SM series gas furnace on combustible flooring, a special sub-base is required. Downflow sub- base kits are factory supplied accessories and are listed according to the cabinet letter of the furnace. For ‘B’, ‘C’, and ‘D’...

  • Page 18: Inducer Assembly Rotation

    Inducer Assembly Rotation To increase installation flexibility, the inducer assembly can be rotated up to 3 different positions. Each variation has WARNING: slightly different requirements with regard to condensate disposal and, in some cases, the need to seal the furnace cabinet.
  • Page 19 Figure 15. Figure 16. Figure 17.

  • Page 20: Accessories

    1. Shut off any electrical power to the furnace. 2. Label and disconnect the tubing and wires from the pressure switch (Figure 18). 3. Remove two screws securing the pressure switch to the inducer housing. 4. Remove the pressure switch from the mounts on the inducer housing and relocate it to the other set of mounts FRONT 90°...

  • Page 21: Pvc Components

    See Figure alignment with other vent pipes. 21. NOTE: If supplied with your furnace, the NORDYNE PVC trap (664659) may be used in place of the reducer Alternate Orientation and 1/2” X 1/2” hose barb 1.
  • Page 22 4. Carefully pull the blower assembly (4) out thru the front of the furnace. 2” x 3” PVC Coupling 5. Remove all screws (5) securing bottom panel (6) to bottom of furnace and front brace (7). 6. Lift up and slide bottom panel (6) out through front of Coil Box furnace.

  • Page 23: Gas Supply & Piping

    GAS SUPPLY & PIPING WARNING: FIRE OR EXPLOSION HAZARD Codes. Figure & WHAT TO DO IF YOU SMELL GAS instructions. AVERTISSEMENT: Figure 25 Figure Table 11 (page 40) lists gas flow capacities for standard pipe sizes as a function of length in typical applications based on nominal pressure drop in the line.
  • Page 24 For example, the input needs to be reduced 8% at 2,000 AVERTISSEMENT: feet, 12% at 3,000 feet, etc. This deration is in reference to the input rate and gas heating value at sea level. To derate the furnace requires knowing the heating value of the gas at the installation site.
  • Page 25 *SC SERIES Note “A” Note “A” Note “B” Note “B” Right Side Entry Left Side Entry *SD SERIES Note “A” Note “A” Note “B” Note “B” Left Side Entry Right Side Entry (1) Automatic Gas Valve (2) Burner Assembly (3) Dripleg...

  • Page 26: Electrical Wiring

    ELECTRICAL WIRING WARNING: WARNING: HAZARD Conversion to LP / Propane is detailed in the installation instructions provided with the conversion kit. Generally, this will require the replacement of the burner orifices and the spring found under the cap screw on the pressure regulator.

  • Page 27: Line Voltage Wiring

    Line Voltage Wiring It is recommended that the line voltage (115 VAC) to Figure the furnace be supplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the furnace Grounding as listed in Table IMPORTANT NOTES: WARNING: Furnace Furnace...

  • Page 28: Twinning

    Twinning Single stage furnaces are not supplied with a built- in twinning capability. Other valuable features and thermostat. The thermostat’s wiring must comply with enhancements were made to the new control that made it the current provisions of the NEC (ANSI/NFPA 70) and necessary to remove the twinning capability.
  • Page 29 must not exceed the rate shown on the furnace rating plate. THERMOSTAT At altitudes above 2,000 feet, it must not exceed that on FURNACE 1 FURNACE 2 the rating plate less 4% for each 1,000 feet. To determine the exact input rate, perform the following procedures: Expansion Port Expansion Port 1.

  • Page 30: Operating Sequence

    1. Verify the blower door is securely mounted in place and screw all the way out from the valve, turn the screw that there is power to the furnace. slowly. 2. Block the return airflow to the furnace by installing a d.) Replace and tighten the regulator capscrew over close-off plate in place of or upstream of the filter(s).

  • Page 31: Maintenance

    indoor fan is energized on the selected FAN speed. to assist qualified technicians experienced in the proper blower will switch over to the selected COOL speed. maintenance and operation of this appliance. W terminal receives a call for heat during continuous fan, the blower will de energize.
  • Page 32 6. Using two wrenches, separate the ground-joint union The furnace in the gas supply piping at the furnace. should operate for many years without soot buildup in the flue passageways, however, the flue, vent system, and 7. Remove the piping between the Gas Valve and the burners should be inspected and cleaned (if required) by ground-joint union.
  • Page 33 TOP VIEW BOTTOM VIEW Front Brace 038D-23A 14 1/4 12 5/8 12 7/8 054D-24B 17 1/2 15 7/8 16 1/8 072D-24B Bottom Panel 072D-35C 19 3/8 19 5/8 090D-35C Flue Combustion 108D-45D 24 1/2 22 7/8 23 1/8 120D-45D 3 1/4 NOTE: Dimensions shown in inches.
  • Page 34 Airflow Data & Motor CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise 1,245 1,200 1,150 1,100 1,050 High SC038D-23A Med-High 1,115 1,075 1,030 Bottom Return — Med-Low (38,000) — — — — —...
  • Page 35 & Motor CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise 2,135 2,095 2,040 1,975 1,910 1,840 1,735 1,675 High SC108D-45D 2,000 1,955 1,900 1,845 1,800 1,735 1,665 1,570 Med-High Bottom only or 2 openings Med-Low 1,665 1,660...
  • Page 36 & Motor CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise 1519 — 1483 — 1433 — 1397 — 1335 — 1272 — 1214 — 1130 — HIGH SD038D-24B 1238 — 1216 — 1188 —...
  • Page 37 & Motor CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise 2276 2228 2173 2108 2035 1961 1876 1778 HIGH SD108D-45D 2113 2078 2019 1970 1904 1840 1768 1677 MED-H Bottom Return MED-L 1819 1789 1757...
  • Page 38 HIGH XFMR R C Y G W Figure 33.
  • Page 39 GAS FLOW RATES GAS FLOW RATES CUBIC FEET PER CUBIC FEET PER TIME FOR TIME FOR REVOLUTION OF GAS METER REVOLUTION OF GAS METER ONE REVOLUTION ONE REVOLUTION 1,800 3,600 1,500 3,000 1,286 2,571 1,125 2,250 1,000 2,000 1,800 1,636 1,500 1,385 1,286...
  • Page 40 ALTITUDE ABOVE SEA LEVEL ORIFICE SIZE 0 to 1,999 FT 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 MANIFOLD PRESSURE ORIFICE SIZE 2,000 to 2,999 FT MANIFOLD PRESSURE ORIFICE SIZE 3,000 to 4,999 FT MANIFOLD PRESSURE ORIFICE SIZE 5,000 to 5,999 FT 10.0 10.0 10.0...
  • Page 41 ALTITUDE ABOVE SEA LEVEL ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ORIFICE SIZE MANIFOLD PRESSURE ALTITUDE ABOVE SEA LEVEL ORIFICE SIZE...
  • Page 42 VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED CANADIAN INSTALLATIONS US INSTALLATIONS Clearance Location Direct Vent Furnaces Clearance above grade, veranda, porch, deck, 12 inches (30cm) 12 inches (30cm) 12 inches (30cm) balcony, or maximum expected snow level. 6 inches (15cm) for 6 inches (15cm) for appliances <...
  • Page 43 HORIZONTAL VENTING w/ 2-Pipes Straps or other suitable supports Wall (Upflow Furnace Shown) at minimum 5 ft. intervals (both pipes) Seal / caulk around pipes First support as close at wall to furnace as possible 90° Elbows 90° Elbow COMBUSTION AIR VENT PIPE Flue Pipe must slope FLUE PIPE upward 1/4”...
  • Page 44 HORIZONTAL VENTING w/ 2-Pipes Straps or Other Suitable (Upflow Furnace Shown) Seal/Caulk Supports at minimum of 5 ft. Intervals Around Pipes at Building 90° 90° Elbow Elbow COMBUSTION AIR 90° Elbow Upward Pitch - 1/4” per foot 12” Min. 7” (Flue Pipe) Table 2 for 2”...
  • Page 45 95.0% UPFLOW - 1 PIPE OPTIONS COMBUSTION COMBUSTION NOTE 5 PVC Tee PVC Trap NOTE 5 PVC Tee Rubber Grommet OPTION 21 OPTION 22 PVC Trap Rubber Grommet See VIEW O for drain line positions See VIEW P for drain line positions VIEW -O- VIEW -P- Drain Line Attached...
  • Page 46 95.0% HORIZONTAL RIGHT - 1 PIPE OPTION 95.0% HORIZONTAL LEFT - 1 PIPE OPTION Rubber Rubber Option Option Grommet Grommet COMBUSTION COMBUSTION See VIEW R for See VIEW Q for Plug Plug drain line positions drain line positions Inline Drain (Factory Supplied) See NOTE 3 VIEW -Q-...

  • Page 47: Troubleshooting

    TROUBLESHOOTING been verified, check the Blower Limit Switch and reset if necessary. See Figure 43 (page 54) Figure 44 (page 55) for component location. reset, contact a qualified service technician to identify and repair the problem. steel wool. Roll-out Switches and reset if necessary. verify that there is no double trapping of condensate.
  • Page 48 Finish Flange Igniter Flame Roll-Out Burner Sensor Switch Assembly Gas Manifold Control Board Gas Valve Main Air Limit Switch Vent Limit Switch Pressure Switch - Condensate Inducer Assembly (‘B’, ‘C’, & ‘D’ cabinets only) Pressure Switch Transformer (Inducer) Blower Door Switch Blower Assembly...

  • Page 49: Electrical System

    ELECTRICAL SYSTEM ATTENTION INSTALLERS: It is your responsibility to know this product better than your customer. This includes being able to install the product according to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for the life of the product. Safety should always be the deciding factor when installing this product and us- Supply Voltage: ________________________________ VOLTS ing common sense plays an important role as well.

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Sd seriesSl seriesSm series

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