Reznor SSCBL Installation, Operation And Maintenance Manual
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Reznor SSCBL Installation, Operation And Maintenance Manual

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INDOOR AND OUTDOOR PACKAGED SYSTEM INSTALLATION,
OPERATION, AND MAINTENANCE
INDOOR SEPARATED-COMBUSTION MODEL SSCBL
OUTDOOR POWER-VENTED MODEL RPBL
SSCBL
• Failure to follow safety warnings exactly could result in serious injury, death, or property
damage.
• Improper installation, adjustment, alteration, service, or maintenance can cause serious injury,
death, or property damage.
• Installation and service must be performed by a qualified installer, service agency, or the gas
supplier.
• Be sure to read and understand the installation, operation, and service instructions in this
manual.
• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a phone remote from the building. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
Revision: SSCBL-RPBL-IOM (10-22) 149159-C
Supersedes: SSCBL-RPBL-IOM (08-22) 149159-B
 ⚠ DANGER ⚠ 
FIRE OR EXPLOSION HAZARD
WHAT TO DO IF YOU SMELL GAS
RPBL

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Summary of Contents for Reznor SSCBL

  • Page 1 Revision: SSCBL-RPBL-IOM (10-22) 149159-C Supersedes: SSCBL-RPBL-IOM (08-22) 149159-B INDOOR AND OUTDOOR PACKAGED SYSTEM INSTALLATION, OPERATION, AND MAINTENANCE INDOOR SEPARATED-COMBUSTION MODEL SSCBL OUTDOOR POWER-VENTED MODEL RPBL SSCBL RPBL  ⚠ DANGER ⚠  FIRE OR EXPLOSION HAZARD • Failure to follow safety warnings exactly could result in serious injury, death, or property damage.

  • Page 2: Table Of Contents

    High Temperature Limit Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 3 INSTALLATION RECORD (TO BE COMPLETED BY INSTALLER)..........76 SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 4: General Information

    • Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read these installation, operation, and maintenance instructions thoroughly before installing or servicing this equipment. SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 5: Warranty

    • The heaters are not certified as residential heating equipment and should not be used as such . • Clearances (model SSCBL): Clearances from the heater and vent to combustible construction or material in storage must conform with the National Fuel Gas Code ANSI Z223 .1 (latest edition) pertaining to gas-burning devices, and such material must not attain a temperature over 160°F (71°C) by continued operation of the heater .

  • Page 6: Dimensions

    CONN (19) 4-3/32 4-1/4 4-1/4 (104) 19-1/2 (108) (108) (495) LEFT SIDE VIEW FRONT VIEW Figure 1. SSCBL Dimensions (Refer to Table Table 2. SSCBL Dimensions Unit Size Dimension 500, 600 1050 1200 (See Figure Inches (mm) 58-7/8 (1495) 47-7/8 (1216)

  • Page 7: Weights

    The gas connection is at curb cap height on the control side of the system . Weights Table 4. Weights Unit Size 500, 600 1050 1200 Net Weight (Pounds (kg)) 849 (385) 1104 (500) 1184 (537) 1245 (565) 1476 (670) 1565 (710) SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 8: Clearances

    1050, 1200 Location ⚠ CAUTION ⚠ Do not locate an indoor model SSCBL unit where it may be exposed to water spray, rain, or dripping water. • Select a location that complies with the requirements in this manual . • There are a variety of factors, such as system application, building structure, dimensions, and weight, that contribute to selecting the location .

  • Page 9: Installation

    • Check to see if there are any field-installed options that need to be connected to the furnace prior to installation . • Model SSCBL: All model SSCBL installations require a vent/combustion air kit (option CC2 or CC6), which includes a concentric adapter box, for each duct furnace .

  • Page 10: Curb Cap Base

    • Units are equipped with a load bearing curb cap that forms an integral part of the unit . The curb cap is welded at all joints . • Model SSCBL: The curb cap has suspension holes at each corner and hanger brackets on the sides . Each Suspension (Model SSCBL) suspension location requires a 1/2-inch threaded rod (refer to section) .
  • Page 11 161-1/2 (4102) 167 (4242) 172-1/2 (4382) 193 (4902) 198-1/2 (5042) 170-1/2 (4331) 185-1/2 (4712) 191 (4851) 196-1/2 (4991) 217 (5512) 222-1/2 (5652) 50-13/16 (1291) 39-13/16 (1011) 45-5/16 (1151) 50-13/16 (1291) 45-5/16 (1151) 50-13/16 (1291) Roof opening dimensions . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 12 Curb must be leveled in both directions with no twist end-to-end to ensure good weather-tight seal between unit’s curb cap and curb. 4 . Level curb as necessary using shims . 5 . Secure curb to roof deck using hardware provided . 6 . Install field-supplied flashing . Figure 4. Splicing Detail SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 13: Field-Supplied Support Assembly

    3 . If rails are not being placed directly on surface, install cross-supports underneath rails at ends of unit and at all cabinet joints (see Figure 5, DETAIL B) . DETAIL A DETAIL B Figure 5. Field-Supplied Support Assembly (Refer to Table SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 14: Mounting

    . Mounting Model SSCBL systems are designed for either suspension or mounting on rails . Model RPBL systems are designed for mounting only on rails or on a curb .

  • Page 15: Mounting (Model Sscbl)

    Suspension Point Dimensions Top View of Curb Cap Assembly Airflow 58-25/32 (1493) (19) (19) DETAIL A DETAIL B Figure 6. Suspension of Model SSCBL (Refer to Table Table 11. SSCBL Suspension Dimensions Unit Size Dimension 500, 600 1050 1200 (See...

  • Page 16: Field-Installation Of Cooling Coil Cabinet And Downturn Plenum

    NOTES: • If the cabinet is being installed on an indoor model SSCBL, consult the factory regarding installation. If suspending the cabinet, consult the factory. • The optional cooling coil cabinet is shipped separately for field-installation. The cabinet includes either a chilled water or a refrigerant (DX) air conditioning coil.
  • Page 17 DX COIL CABINET (OPTION AU3 FOR RPBL AND SSCBL AND OPTIONS AU13 AND AU14 FOR RPBL) DOWNTURN PLENUM CABINET (FACTORY-INSTALLED) CHILLED WATER COIL CABINET (OPTION AU2 FOR RPBL AND SSCBL AND OPTIONS AU11 AND AU12 FOR RPBL) Figure 7. Cooling Coil Cabinet and Downturn Plenum Dimensions (Refer to...
  • Page 18 . Install partially-assembled connectors with screw holes in top piece at open side (see into space between furnace and cooling coil cabinet . Tap with hammer—first on side, then on top, and lastly on bottom—until duct connector assembly is seated over both duct flanges . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 19 A and measure up 6 inches (152 mm) . Drill first 7/8-inch hole at same center line as mounting screw . FIRST HOLE 6 INCHES (152 mm) CENTER HOLE PLUG MOUNTING SCREW DETAIL A DETAIL B Figure 10. Wiring Hole Locations (3) Remove cooling coil access panel(s) . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 20 . On bottom of electrical box in furnace section, remove hole plug below terminal blocks and route damper motor wires up through hole and into electrical box . e . Connect wires in accordance with Figure 11 . Figure 11. Discharge Damper Wiring Connections SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 21 (2) Slide filler panel into place and secure using #10 × 1/2 sheet metal screws . Repeat on other side . c . Install top filler panel (see Figure 13, DETAIL B): Cooling Coil Cabinet with Downturn Plenum DETAIL A DETAIL B Figure 13. Filler Panel Installation SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 22: Duct Connections

    • Filters: When ordered, a filter rack with a variety of filter options, is factory-installed in the blower cabinet . Refer to the replacement parts manual listed in Table 1 for replacement filters . Refer to the APPENDIX: FILTER PRESSURE DROPS for filter pressure drop data . • Air opening dimensions: Refer to Table 2 Table SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 23: Requirements And Suggestions For Connecting And Installing Ducts

    The joint where the supply air duct attaches to the furnace must be sealed securely to prevent air leakage into draft hood or burner rack area. Leakage can cause poor combustion and pilot problems, can shorten heat exchanger life, and can cause poor performance. SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 24: Bottom Duct Connections (Model Rpbl)

    60-5/16 (1532) 86-5/16 (2192) 112-5/16 (2853) With cooling coil cabinet 127-17/32 142-17/32 148-1/32 153-17/32 174-1/32 179-17/32 with downturn plenum (3239) (3620) (3760) (3900) (4420) (4560) 47-5/8 (1210) 36-5/8 (930) 42-1/8 (1070) 47-5/8 (1210) 42-1/8 (1070) 47-5/8 (1210) SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 25: 100% Outside Air Hood (Model Rpbl With Option As2)

    . In horizontal ductwork, position sensor in top-middle of duct with sensor probe extending vertically down into center of air stream . b . In vertical ductwork, position sensor in middle of duct that corresponds with top-middle of discharge outlet . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 26 (2) Element is retained by either spring clips or cable straps . (3) Round gasket and metal retaining plate provide airtight seal for capillary and must be removed to remove element . Figure 18. Discharge Air Temperature Sensor Location (Options AG39 and AG41) SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 27: Venting/Combustion Air Connections (Model Sscbl)

    • These instructions apply to installation and use of the concentric adapter and vent/combustion air kit (option CC2 or CC6) designed for use with all Reznor separated-combustion products . The systems illustrated in this manual are the only venting/combustion air systems approved for these separated-combustion units . Do not use this concentric adapter box with any other products .

  • Page 28: Specific Venting Requirements: Venter Outlet And Combustion Air Inlet Connections

    INSTALLATION—CONTINUED Venting/Combustion Air Connections (Model SSCBL)—Continued Specific Venting Requirements: Piping—Continued Table 16. Pipe Diameter and Maximum Pipe Length from Each Furnace Section to Concentric Adapter Box SSCBL Unit Size Diameter/Length 500, 600 400, 700, 800, 1050, 1200 Diameters (Inches (mm))

  • Page 29: Specific Venting Requirements: Support

    . Do not rely on the heater or the adapter box for support of either horizontal or vertical pipes . Use noncombustible supports on vent pipe . NOTE: The double-wall vent terminal pipe does not attach to the concentric adapter box and must be supported during installation. SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 30: Specific Venting Requirements: Clearance

    Do not enclose the vent pipe or place pipe closer than 6 inches (152 mm) to combustible material . Specific Venting Requirements: Concentric Adapter Box NOTE: A concentric adapter box is required for each furnace section of a model SSCBL installation. The concentric adapter box (PN 205885) is included in the vent/combustion air kit . Installation instructions depend on whether the vent system is horizontal (option CC6) or vertical (option CC2) .

  • Page 31: Specific Venting Requirements: Concentric Adapter Box Pipe Connections

    When pipe diameters differ, depending on direction of airflow, join the pipes with either a tapered reducer or enlarger as shown in Figure 22 . 6-INCH PIPE BETWEEN FURNACES AND BOXES 7-INCH PIPE BETWEEN FURNACES AND BOXES Figure 22. Concentric Adapter Box Connections SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 32: Vent Terminal Options

    INSTALLATION—CONTINUED Venting/Combustion Air Connections (Model SSCBL)—Continued Vent Terminal Options Figure 23 . Vent terminal options CC2 (vertical vent configuration) and CC6 (horizontal vent configuration) are shown in VERTICAL (OPTION CC2) HORIZONTAL (OPTION CC6) Figure 23. Horizontal and Vertical Venting Options Vertical Vent Terminal (Option CC2) Installation •...
  • Page 33 −10 to 30°F (−23 to −1°C) 60 (1524) < −10°F (< −23°C) 84 (2134) Rear Side View View Shaded area represents required continuous (no joints) section of vent pipe. Section of pipe may extend higher. Vent Pipe Figure 25. Option CC2 Installation SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 34 INSTALLATION—CONTINUED Venting/Combustion Air Connections (Model SSCBL)—Continued Vertical Vent Terminal (Option CC2) Installation—Continued 2 . Install vent pipe and combustion air pipe runs: a . Connect piping to heater in accordance with specifications listed in Specific Venting Requirements: Piping Specific Venting Requirements: Venter Outlet and Combustion Air Inlet Connections sections .
  • Page 35 . Position concentric adapter box to match pipe runs and secure short angles of concentric adapter brackets Figure 27) to underside of roof using field-supplied hardware . (see c . Install field-supplied flashing around combustion air pipe on roof outside . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 36 INSTALLATION—CONTINUED Venting/Combustion Air Connections (Model SSCBL)—Continued Vertical Vent Terminal (Option CC2) Installation—Continued Figure 29. Combustion Air Pipe Through Roof 7 . Install double-wall terminal vent pipe: NOTE: The length of the vent pipe is determined by the installation within maximum and minimum requirements.

  • Page 37: Horizontal Vent Terminal (Option Cc6) Installation

    Figure 53316 Assembly, screened exhaust (see Figure 205894 Inlet guard (see Figure 37661 Screw, sheet metal, #10-16 × 1/2 207232 Concentric adapter box bracket 53335 High-temperature silicone sealant, tube One (1) required for each furnace section . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 38 INSTALLATION—CONTINUED Venting/Combustion Air Connections (Model SSCBL)—Continued Vertical Vent Terminal (Option CC6) Installation—Continued SCREENED EXHAUST ASSEMBLY INLET GUARD Figure 31. Option CC6 Components ⚠ DANGER ⚠ • To prevent combustion products from entering the occupied space, all vent terminals must be positioned or located away from fresh air intakes, doors, and windows.
  • Page 39 • If the wall is combustible, ensure that brackets are positioned to allow a 2-inch (51 mm) clearance between the concentric adapter box and the wall. • If any holes are made in the concentric adapter box in error, ensure that they are sealed. SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 40 INSTALLATION—CONTINUED Venting/Combustion Air Connections (Model SSCBL)—Continued Horizontal Vent Terminal (Option CC6) Installation—Continued a . Insert combustion air pipe out through wall . Figure 27) of concentric adapter box brackets to wall . b . Secure short angles (see c . Seal or flash inlet air pipe on outside using sealant and/or field-supplied flashing .

  • Page 41: Venting Connections (Model Rpbl)

    (see The position of this opening discourages recirculation of combustion products and provides for furnace operation in all normal weather conditions . Figure 33. Flue Outlet and Combustion Air Inlet SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 42: Piping Connections

    • Test pressures above 1/2 psi—disconnect the heater and manual valve from the gas supply line to be tested. Cap or plug the supply line. • Test pressures below 1/2 psi—before testing, close the manual valve on the heater. SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 43: Gas Supply Piping

    • After all connections are made, disconnect the pilot supply at the control valve and bleed the system of all air . Reconnect the pilot line and leak test all connections by brushing on a soap solution . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 44 INSTALLATION—CONTINUED Piping Connections—Continued Supply Piping Connections—Continued DETAIL A SSCBL OR RPBL WITH ONE FURNACE SECTION SSCBL OR RPBL WITH TWO FURNACE SECTIONS SSCBL OR RPBL WITH THREE FURNACE SECTIONS DETAIL B Figure 35. Gas Connections SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 45: Electrical Connections

    Table 23 Allow at least 4 feet (1 .2 meters) of service room between the switch and removable panels . Refer to for field-supplied wiring sizes—from disconnect to electrical box—for connection to the motor contactor or starter . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 46: Control Wiring

    Two-stage gas valve 0 .60 Table 25. Control Wiring Sizes Distance from Unit to Control Minimum Recommended Wire Gauge Total Wire Length (Feet (Meters)) (AWG) (Feet (Meters)) 75 (23) 150 (46) 125 (38) 250 (76) 175 (53) 350 (107) SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 47 9) Main High Gas Pressure 18) Line Voltage Connection 28) Potentiometer 40) Air Proving Switch Switch 19) Convenience Outlet and 29) Filters 41) Venter Assembly 10) Time Delay Relay Outlet Transformer 30) Blower Motor Figure 36. Typical Control Locations SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 48 . Building pressure is set by turning adjustment screw . LOW actuation point is set by adjusting span of null by turning span adjustment screw . Span range is 0 .01 to 0 .03 IN WC . e . Refer to wiring diagram provided with unit to make electrical connections . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 49: Controls

    Some thermostats are provided with this feature. Multiple units controlled from a single thermostat are shut off in the same manner. For proper operation, ensure that the blower fan control is wired correctly. SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 50: High Temperature Limit Control

    . Both low fire and high fire stages are controlled by a Servo regulator that maintains constant gas input under wide variations in gas supply pressure . Refer to the instructions provided with the unit for gas valve specifications, wiring, and operating instructions . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 51: Optional Two-Stage Control (Makeup Air Application)

    . After the installation is complete, re-adjust the setpoint of the ductstat(s) to achieve the desired average discharge air temperature . In general, makeup air applications are usually adjusted to discharge an outlet air temperature between 65°F and 75°F . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 52: Optional Ductstat With Remote Temperature Selector (Option Ag15 , Ag17, Or Ag19)

    (55–90°F) is identified as option AG8 or AG9 . The temperature selector setting for option AG8 is on the amplifier (see Figure 38) . Option AG9 has a remote temperature selector . Both systems are available with an override thermostat . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 53: Computer-Controlled Electronic Modulation Between 50% And 100% Firing Rate (Option Ag21)

    . Control of the system Figure 38) with a corresponding remote temperature dial . is through a Maxitrol amplifier (see Note: Arrangement may vary slightly depending on gas valve; components are the same. Figure 39. Typical Manifold Arrangement with Electronic Modulation SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 54: Computer-Controlled Electronic Modulation Between 25% And 100% Firing Rate (Options Ag40 And Ag42)

    . • This uniquely-designed modulation system requires combustion air pressure settings different from the standard Table 26 system . Refer to for the approximate combustion air proving switch settings at sea-level operation . SSCBL-RPBL-IOM (10-22) 149159-C...
  • Page 55 Terminal 7? Terminal 2? Replace the Replace ignition primary manifold permissive pressure switch. relay. Figure 40. Troubleshooting Guide for Checking Bypass Combustion Air Damper Safety Circuit on Units with Option AG39, AG40, AG41, or AG42 SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 56: Pilot And Ignition Systems

    • Natural gas burner racks (except when equipped with electronic modulation option AG39, AG40, AG41, or AG42) are equipped with two flash carryovers . Natural gas burner racks on SSCBL units manufactured before 1997 had a gas lighter tube carryover and one flash carryover .

  • Page 57: Dampers And Damper Controls

    . The dirty filter switch is located in the furnace section . To adjust the dirty filter switch, Dirty Filter Switch Adjustment refer to the section . OPERATION ⚠ WARNING ⚠ To ensure safety, follow the lighting instructions located on the outlet box cover. SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 58: Pre-Startup Checklist

    Solenoid gas valve, pilot gas valve, and ignition controller de-energized Thermostat is satisfied Time delay relay keeps venter motor on for approximately 90 seconds (post-purge) To shut down, set thermostat Blower motor remains on as determined by fan time delay to lowest setting SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 59: Post-Startup Checklist

    The result is incomplete combustion, which produces carbon monoxide, a poisonous gas that can cause death. • For SSCBL models, safe operation of separated-combustion, indirect-fired gas burning equipment requires a sealed, properly-operating vent system that vents all flue products to the outside atmosphere.

  • Page 60: Adjusting Blower Speed

    . Turn ON gas and electric power and light heater in accordance with instructions on lighting instruction plate . g . Check motor amps using ammeter . Maximum motor amp rating on motor nameplate must not be exceeded . h . When adjustment is complete, check for proper operation . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 61: Reversing Blower Rotation

    1 .6 2 .6 3 .3 4 .2 6 .6 10 .5 13 .0 19 .0 25 .0 575V/3PH 1 .3 2 .1 2 .6 3 .4 5 .3 8 .4 10 .4 15 .2 20 .0 SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 62: Adjust Heat Stage Controllers (Option Ag41 Or Ag42)

    NOTE: The same type of controller may also be used as the optional high ambient limit control (option BN2) and as the mixed air controller that is part of air control options AR12, AR13, AR15, and AR16. 3 . Adjust each controller to setpoint as determined by calculation in step 1 . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 63: Pressure Null Switch Adjustment

    10 IN WC . Low fire on a two-stage valve is set to 5 IN WC . Inlet pressure to the valve must be a minimum of 11 IN WC and a maximum of 14 IN WC . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 64: High Elevation (>2,000 Feet/609 Meters) Installations

    • Use only using factory-supplied orifices. Do not attempt to drill out orifices in the field. Improperly drilled orifices may cause fire, explosion, carbon monoxide poisoning, personal injury, or death. SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 65: Conversion To Lp (Propane)

    (see 2 . At that point, adjust setscrew three full turns counterclockwise or until setscrew is top-ended . 3 . At that setpoint, indicator light will be activated at approximately 50% filter blockage . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 66: Burner Air Shutter Adjustment

    • After the furnace has been in operation for 15 minutes, close the air shutter until the flame turns yellow . Open the shutter until yellow disappears . Burner Air Shutter Adjustment Screw Figure 47. Burner Air Shutter Adjustment Screw SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 67: Damper Linkage Adjustment

    4 months . If the furnace is operating in an area where an unusual amount of dust, soot, or other impurities are present in the air, more frequent inspection is recommended . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 68: Maintenance Procedures

    LOW FIRE PRESSURE TAP REGULATOR HIGH FIRE REGULATOR ADJUSTING REGULATOR ADJUSTING SCREW ADJUSTING SCREW SCREW 1/8-INCH INLET 1/8-INCH OUTLET 1/8-INCH INLET PRESSURE TAP PRESSURE TAP PRESSURE TAP SINGLE-STAGE VALVE TWO-STAGE VALVE Figure 49. Combination Gas Valve Test Connections SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 69: Burner Rack Maintenance

    Cleaning Pilot and Burners section . Table 31) as necessary . 4 . Replace burner orifices (refer to 5 . Re-assemble and re-install burner rack by reversing above steps, being careful not to create any unsafe conditions . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 70: Cleaning Pilot And Burners

    Figure 50), which should be maintained to 7/64 inch for RPBL models or 0 .100 inch for SSCBL models . 5 . After the pilot is cleaned, blow away any dirt using compressed air . 6 . Clean the main burners and burner orifices using compressed air .

  • Page 71: Spark Ignition System Maintenance

    Figure 50) is approximately 7/64 inch for RPBL models or 0 .100 inch for SSCBL models . d . If the above conditions are normal and no spark occurs, replace the ignition controller . NOTE: If replacing an earlier model of ignition controller (see...

  • Page 72: Blower Bearing Lubrication

    . Remove accumulated dust and grease deposits from heat exchanger tubes and baffles using brush and/or air hose . d . Reinstall airflow baffles removed in step 2b and secure using baffle screws . e . Secure ductwork as necessary . 3 . Check furnace for proper operation . SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 73: Troubleshooting

    . Transformer failure Ensure that 24V power is available c . Incorrect spark gap Maintain spark gap at 7/64 inch for RPBL models or 0 .100 inch for SSCBL models d . Spark cable shorted to ground Replace worn or grounded spark cable e .
  • Page 74 1 . Improper motor pulley adjustment Ensure that motor pulley is properly-adjusted (refer to Speed cuts out on section) overload 2 . Improper static pressure on duct system Adjust dampers in duct system 3 . Low voltage Check power supply SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 75: Appendix: Filter Pressure Drops

    0 .13 0 .26 0 .31 1200 (three size 400 furnaces 10,000 — 0 .33 0 .39 + one blower) 11,000 — 0 .40 0 .47 12,000 — 0 .48 0 .56 13,000 — 0 .56 — SSCBL-RPBL-IOM (10-22) 149159-C...

  • Page 76: Installation Record (To Be Completed By Installer)

    For more information, contact your Factory Representative. Specifications and illustrations subject to change without notice or incurring obligations . Latest version of this manual is available at www.reznorhvac.com . ©2022 Nortek Global HVAC LLC, O’Fallon, MO . All rights reserved . SSCBL-RPBL-IOM (10-22) 149159-C...

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