Reznor BE Series Manual
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Reznor BE Series Manual

Reznor BE Series Manual

Gas-fired, power-vented unit heaters
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NOTICE:
The information contained on the following page(s) was produced
prior to May 1, 2014. On that date Reznor became part of
Nortek, Inc.
References to any other company affiliations are no longer valid.
©2014 Reznor, LLC. All Rights Reserved.
Trademark notice: Reznor is registered in at least the United States.
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Summary of Contents for Reznor BE Series

  • Page 1 NOTICE: The information contained on the following page(s) was produced prior to May 1, 2014. On that date Reznor became part of Nortek, Inc. References to any other company affiliations are no longer valid. ©2014 Reznor, LLC. All Rights Reserved.

  • Page 2: Table Of Contents

    Model FE and BE Gas-Fired, Power-Vented Unit Heaters INSTALLATION FORM RZ-NA-I-FE/BE ® Obsoletes RGM 436 (Version B) APPLIES TO: Installation/Operation/Service Table of Contents Installation and Operation ......Paragraph 1-24 ..Pages 1-19 Check Installation and Start-Up ....Paragraph 25 ... Page 20 Optional Equipment ........

  • Page 3: Hazard Intensity Levels

    Reznor Distributor. These units must be installed in accordance with local building codes. In Check the rating plate for the gas specifications and electrical character-...

  • Page 4: Dimensions

    4. Dimensions Fan-Type, Power-Vented Unit Heater Figure 1A - Model FE Dimensions - inches (mm) Dimensions (inches) S ize Nat Pro 29-25/32 13-9/16 27-1/16 31-7/16 5-27/32 14-7/16 14-1/32 10-9/32 16 1/2 1/2 9-13/16 29-25/32 13-9/16 27-1/16 31-7/16 5-27/32 14-7/16 14-1/32 10-9/32 16 1/2 1/2 9-13/16...
  • Page 5 4. Dimensions (cont'd) Blower-Type, Power-Vented Unit Heater Figure 1B - Model BE Dimensions - inches (mm) Dimensions (inches) S ize Hanger 29-25/32 13-9/16 43-3/8 31-7/16 5-27/32 14-7/16 61-3/8 10-9/32 29-25/32 13-9/16 31-7/16 5-27/32 14-7/16 61-3/8 10-9/32 29-25/32 15-9/16 31-7/16 5-27/32 14-7/16 61-3/8 10-17/32...
  • Page 6 S ize Hanger 1030 1030 1284 When equipped with optional blower cabinet. Use with 4-point suspension with blower cabinet. When equipped with optional duct flange. Contactor is standard on Models 300 and 400; optional on other Dimension includes a 3/4" flange on the rear of the blower sizes.

  • Page 7: Clearances

    7. Clearances and Combustion Add total BTUH of all appliances in the confined space and divide by figures below for square inch free area size of each (top and bottom) opening. 1. Air from inside the building -- openings 1 square inch free area per Units must be installed so that the following clearances are provided for 1000 BTUH.
  • Page 8 All blower models have legs that support the blower assembly dur- Figure 5 - Two- ing shipping. After the unit is suspended, these legs should be re- Point Suspension moved. with Swivel Be sure that the threaded hanger rods are locked to the heater as Connections shown in Figure 4.
  • Page 9 10. Venting These power-vented unit heaters are designed to operate safely and efficiently with either a horizontal or vertical vent. (Horizontal vent run is recommended for maximum fuel savings.) WARNING: Units installed in multiples require individual vent pipe runs and vent caps. Manifolding of vent runs is not permitted due to possible recirculation of combustion products into the building and possible back pressure effects on the combustion air proving switch.
  • Page 10 6. Condensation Instructions for attaching double-wall (Type B) vent pipe to the venter outlet, a single-wall pipe run, or to the vent cap (use Single wall vent pipe exposed to cold air or run through unheated areas these instructions for either full length double-wall or termi- must be insulated.

  • Page 11: Gas Piping And Pressures

    10. Venting (cont'd) Figure 10 - Vertical Vent Terminals Single-Wall Vent Run and Single-Wall Terminal End Single-Wall Vent Run and Double-Wall Terminal End 11. Gas Piping and Pressures WARNING This appliance is equipped for a maximum gas supply pressure of 1/2 pound, 8 ounces, or 14 inches water column.

  • Page 12: Manifold Pressure

    Sizing a Gas Capacity of Piping Cubic Feet p er Hour based on 0.3" w.c. Pressure Drop Supply Line Sp ecific Gravity for Natural Gas -- 0.6 (Natural Gas -- 1000 BTU/Cubic Ft) Sp ecific Gravity for Prop ane Gas -- 1.6 (Prop ane Gas -- 2550 BTU/Cubic Ft) Length Diameter of Pipe 1/2"...

  • Page 13: Disconnect Switch

    12. Electrical Supply and Connections All electrical wiring and connections, including electrical grounding WARNINGS: On a heater with a unit disconnect MUST be made in accordance with the National Electric Code ANSI/ switch (Option AI-1), if the power is turned off at NFPA No.
  • Page 14 TYPICAL WIRING DIAGRAMS -- Pages 13 - 16 Field Control Wiring Length and Gauge CAUTION: If any of the original wire as supplied with Total Wire Distance from MinimumRecommended the appliance must be replaced, it must be replaced Length Unit to Control Wire Gauge with wiring material having a temperature rating of at 150' (45.7 m)
  • Page 15 Blower-Type, Power-Vented Model Sizes 25-100 with Intermittent Spark Pilot, Single-Stage Heating, Natural or Propane, Direct Drive OPERATING SEQUENCE NOTES 1. THE FOLLOWING CONTROLS ARE FIELD INSTALLED OPTIONS: 1. SET THERMOSTAT AT LOWEST SETTING. THERMOSTAT 2. TURN ON MAIN AND PILOT MANUAL GAS VALVES. 2.
  • Page 16 Blower-Type, Power-Vented Model Sizes 50-250 with Intermittent Spark Pilot, Single-Stage Heating, Natural or Propane, Belt Drive (NOTE: Belt drive is standard on Sizes 125-250; optional on Sizes 50-100.) OPERATING SEQUENCE NOTES 1. THE FOLLOWING CONTROLS ARE FIELD INSTALLED OPTIONS: THERMOSTAT 1.
  • Page 17 Blower-Type, Power-Vented Model Sizes 165-400 with Intermittent Spark Pilot, Single-stage Heating, Natural or Propane, Belt Drive, Motor Contactor (NOTE: Motor contactor is standard on Sizes 300 and 400; optional on other sizes. NOTES OPERATING SEQUENCE 1. THE FOLLOWING CONTROLS ARE FIELD INSTALLED OPTIONS: THERMOSTAT 1.

  • Page 18: Blower Motor

    13. Thermostat Connections (cont'd) There are some unique wiring requirements with the installation of the optional controls (relay and two-stage). Figure 16 illustrates the wiring of the relay and the connections required for optional thermostat control. 575/3/60 Figure 16 - Wiring Diagrams for Optional Controls Multiple Heater Control - These unit heaters are not designed for multiple unit connection to one thermostat.

  • Page 19: Blower Rotation

    16. Blower Speed Adjustment 5. Tighten the set screw on the flat portion of the pulley shaft. The blower speed may be adjusted to achieve the desired outlet tem- 6. Replace the belt and adjust the belt tension. Adjust tension by perature, as long as the adjustment is within the temperature rise and turning the adjusting screw on the motor base until the belt can be the static pressure limits shown on the heater rating plate.

  • Page 20: Burner Air Adjustment

    20. Combustion Air Proving as a conduction path to ground. The pilot flame rectifies and com- pletes the DC circuit. The ignition controller acknowledges the flame Switch and energizes the main gas valve.) The combustion air proving switch is a pressure sensitive switch that 23.

  • Page 21: Check Installation And Start-Up

    25. Check Installation and Start-Up Check the installation prior to start-up: 5. Thermostat calls for heat, energizing the venter motor. 6. Venter pressure switch closes, firing the unit, after pilot prov- Check suspension. Unit must be secure and level. ing sequence. Blower Model - Check to be sure that all shipping supports 7.
  • Page 22 OPTIONAL EQUIPMENT This section contains a brief description of the more frequently specified field-installed options. All option packages include complete assembly and installation instructions. 26. Optional Vertical Louvers - 27. Optional Downturn Air Nozzles Option CD1 - Options CD2, CD3, CD4, and The purpose of the addition of optional vertical louvers is to increase the air pattern spread.
  • Page 23 29. Optional Polytube Adapter - Options CD6, CD8, and CD11 (Blower Models only) (cont'd) The following chart shows specification information covering the use of polytubes with these blower-type unit heaters. Suggested Hole Sizes and Locations CFM at Poly tube M inimum Free Conversion Table Size .25"...

  • Page 24: Maintenance

    31. Optional Blower/Filter Cabinet - Model Filter Replacement P/N Options CW1, CW2, or CW3 Size Size 1" Filter 2" Filter 25-125 20 x 20 101608 101621 (Blower Models Only) 165-200 16 x 25 101609 101622 20 x 25 101610 101623 The blower/filter cabinet option is available for all sizes.

  • Page 25: Bottom Access

    SERVICE AND MAINTENANCE (cont'd) 7B. Heaters manufactured prior to 8/91 (Serial No. Date Code AQH) NOTE: Use only factory-authorized replacement parts. Loosen the sheet metal screws (two or three) located at the front of the burner rack assembly. See Figures 27. These screws retain the 33.

  • Page 26: Fan Blade

    10. To replace the burner rack assembly and the bottom panel, Proper operation of the electronic spark ignition system requires reverse the above procedure (Steps 1-8). a minimum flame signal of .2 microamps as measured by a microampmeter. Individual burners may be cleaned using air pressure. Use an air nozzle to blow out scale and dust accumulation from the burner ports.
  • Page 27 38. Fan or Blower (cont'd) 40. Venter Motor Remove dirt and grease from the motor housing. Power venter motor is On blower models, remove the grease and dirt from the blower housing permanently lubricated. and check the belt for wear and proper tension (See Paragraph 15.) The vent relay controls the venter motor.

  • Page 28: Troubleshooting

    43. Troubleshooting TRO UBLE PRO BABLE CAUSE REMEDY Ve nte r motor will 1. No power to unit. 1. T urn on power, check supply fuses, or circuit breaker. If unit is equipped with not start unit-mounted disconnect switch, check circuit breaker (See Paragraph 12). 2.
  • Page 29 ©2004 Thomas & Betts Corporation, All rights reserved. Printed in the U.S.A. MANUFACTURER OF GAS, OIL, ELECTRIC HEATING AND VENTILATING SYSTEMS ® Trademark Note: Reznor is registered in the United States and other countries. All other trademarks are the property of their respective organizations. 704 OG POD...

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