L.B. White AD250 Owner's Manual And Instructions
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L.B. White AD250 Owner's Manual And Instructions

Guardian agricultural animal confinement building heaters
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Owner's Manual and Instructions
Guardian Agricultural Animal Confinement Building Heaters
MODEL
OUTPUT
FUEL
73.3 kW
Available in either
AD250
Propane Vapor
Withdrawal or
Natural Gas
Configurations.
Congratulations!
You have purchased the finest agricultural building heater available.
Your new L.B. White heater incorporates the benefits from the most experienced
manufacturer of heating products using state-of-the-art technology.
We, at L.B. White, thank you for your confidence in our products and welcome
any suggestions or comments you may have...call us at +1 608-783-5691.
ATTENTION ALL USERS
This heater has been designed and developed specifically for use as a direct-
fired circulating heater for agricultural animal confinement buildings. The heater
has been evaluated by Advantica and found to conform to essential health and
safety requirements as required by the Gas Appliance Directive, Low Voltage
Directive, and Electromagnetic directive. The heater is approved for indoor and
outdoor use. If you are considering using this product for any application other
than its intended use, then please contact your fuel gas supplier, or the L.B.
White Co., Inc.
150-21730-E

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Summary of Contents for L.B. White AD250

  • Page 1 Your new L.B. White heater incorporates the benefits from the most experienced manufacturer of heating products using state-of-the-art technology. We, at L.B. White, thank you for your confidence in our products and welcome any suggestions or comments you may have...call us at +1 608-783-5691.
  • Page 3 Save this Owner’s Manual for future use and reference. ■ Owner’s Manuals and replacement labels are available at no charge. For assistance, contact L.B. White at +1 608-783-5691. WARNING ■ Proper gas supply pressure must be provided to the inlet of the heater.

  • Page 4: Table Of Contents

    This Contact your local L.B. White distributor or the L.B. White Co., information is contained on the dataplate. The dataplate is Inc. for assistance, or if you have any questions about the located on the exterior of the burner end door.

  • Page 5: Heater Specifications

    Heater Specifications Model AD250 S S P P E E C C I I F F I I C C A A T T I I O O N N S S 73.3 Maximum Input per Hour (kW) Minimum Input per Hour (kW) 46.9...

  • Page 6: Fuel Information For Country Of Destination

    FUEL INFORMATION FOR COUNTRY OF DESTINATION Propane Gas Rate Gas Category & Pressure Destination Countries (kg/hour) (mbar) HU & NL (30) (36) BE, CH, CZ, ES, 5.25 (37) GB, IE, PT, SI & SK BE, CH, DE, ES & NL (50) (Butane) CY, CZ, DK, EE, FI,...

  • Page 7: Safety Precautions

    ■ Refer to the specification section of the heater’s Owner’s ■ Manual, heater dataplate, or contact the L.B. White Symptoms of improper combustion affecting livestock can be disease, lower feed conversion, or death. FUEL GAS ODOR LP g g as a a nd n n atural g g as h h ave m m an-m m ade o o dorants a a dded s s pecifically f f or d d etection o o f f f uel g g as l l eaks.
  • Page 8 There is a hot lead, neutral lead, and a ground lead. The heater may or may not incorporate a plug in the 2. All installations and applications of L.B. White heaters power cord on the heater and the plug may or may not must meet all relevant local, state, regional and incorporate a pin for the ground wire.

  • Page 9: Installation Instructions

    Further tighten 1. Read all safety precautions and follow L.B. White the gas connections as necessary to stop the leak. recommendations when installing this heater.

  • Page 10: Air Diverter Installation Instructions

    L.P. gas liquid withdrawal system or application. If you are in doubt, contact the L.B. White Co., Inc. 17. Any defects found in performing any of the service or maintenance procedures must be eliminated and 15.

  • Page 11: Hanging Instructions

    HANGING INSTRUCTIONS 1. Assemble according to the illustration and tighten all FIG. 3 eyebolts securely. FIG. 2 EYEBOLT CHAIN OPTIONAL INDOOR REGULATOR FLAT WASHER MOUNTING LOCATION BLACK PIPE THROUGH WALL GAS HOSE CAGE NUT CASE TOP THERMOSTAT VENT LINE CORD 2.

  • Page 12: Thermostat Installation

    THERMOSTAT INSTALLATION To C C onnect t t he D D irect W W ired T T hermostat K K it t t o t t he C C ontrol WARNING Box o o n t t he H H eater: Electrical S S hock H H azard 1.

  • Page 13: Start-Up Instructions

    Start-Up Instructions Follow steps 1 - 7 on initial start-up after heater installation On a call for heat, the motor will start up and run for by a qualified service person. For normal start-up, simply set five (5) seconds prior to ignition trial. This pre-purge is the thermostat to a setting above room temperature.

  • Page 14: Shut-Down Instructions

    Shut-Down Instructions If the heater is to be shut down for cleaning, maintenance or 3. Move the selector switch to the Off position. repair, follow steps 1 - 6. Otherwise, simply turn thermostat to “Off” or “No Heat” for standard shut down. 4.

  • Page 15: Cleaning Instructions

    Make sure all markings are legible and not cut, torn, or otherwise damaged. Any damaged markings should be replaced immediately. Markings are available at no cost by contacting the L.B. White Company.

  • Page 16: Service Instructions

    Service Instructions MOTOR AND FAN WHEEL ASSEMBLY 1. Shut off the gas supply to the heater. NOTES: a. Fan wheel to motor mount plate spacing must be adjusted to 3.2 mm clearance 2. Disconnect the heater from its electrical supply. before tightening the fan wheel to the motor shaft.

  • Page 17: Flapper Adjustment

    FLAPPER ADJUSTMENT 1. Shut off the gas supply to the heater. 6. Using a needle nose pliers, gently bend up the arm of the flapper (NOT T T HE S S WITCH A A RM) in increments 2. Disconnect the heater from its electrical supply. until the flapper arm engages the switch arm, closing the contacts of the switch when the flapper body 3.

  • Page 18: Gas Pressure Checks

    GAS PRESSURE CHECKS C. Reading P P ressures WARNING 1. With the heater operating, the pressure gauges Fire a a nd E E xplosion H H azard should read the pressures specified on the dataplate. ■ Do not disassemble the gas control valve. 2.

  • Page 19: Igniter And Flame Sensor

    IGNITER AND FLAME SENSOR IMPORTANT 1. Close the fuel supply valves to the heater and disconnect the heater from its electrical supply. ■ The igniter/sensor assembly may require cleaning due to 2. Remove the screw that secures the igniter assembly to accumulations of dust and dirt over a period of time, the heat chamber.

  • Page 20: Troubleshooting Guide

    Troubleshooting Guide READ THIS ENTIRE SECTION BEFORE Components should be replaced only after each step within BEGINNING TO TROUBLESHOOT PROBLEMS. the flow chart has been completed and replacement is suggested in the flow chart. Refer to the Servicing sections as necessary to obtain information on disassembly and WARNING replacement procedures of the component.

  • Page 26: Electrical Connection And Ladder Diagram

    Electrical Connection and Ladder Diagram CAUTION - REFER TO THE HEATER'S ELECTRICAL CONNECTION DIAGRAM WHEN SERVICING THE HEATER'S ELECTRICAL COMPONENTS TO AVOID WIRING ERRORS & EQUIPMENT MALFUNCTION. CHECK FOR PROPER OPERATION AFTER SERVICING. WARNING: THIS HEATER MAY START AT ANY TIME HIGH VOLTAGE IGNITION LEAD IGNITER GREEN/YELLOW...

  • Page 27: Heater Component Function

    Heater Component Function Air Proving Switch Heat Chamber Safety device used to insure that the proper air flow is being Metal fire box that provides an area where burner flame achieved before the gas valve is opened. mixes with combustion air thereby providing heat. Burner High Limit Switch Cast iron component used to mix air and gas and provide an...

  • Page 28: Parts Identification

    Parts Identification PARTS SCHEMATIC...

  • Page 29: Parts List

    PARTS LIST Item Description Part Number Base 20136 Valve, Gas Control (Propane) 22420 Valve, Gas Control (Natural Gas) 22421 Bolt 02692 Washer 01589 Nipple 07148 Valve, Throttle (Propane) 20143 Valve, Throttle (Natural Gas) 20144 Ell, Street 01426 Manifold 09291 Orifice, Burner (Propane) 20141 Orifice, Burner (Natural Gas) 21459...

  • Page 30: Marking Identification

    Marking Identification 20453 HOT SURFACES 21012 WARNING, FIRE AND EXPLOSION 20287 LOGO 25211 WIRING DIAGRAM 21270 WARNING, ELECTRICAL GROUNDING 20453 HOT SURFACES (ABOVE POWER CORD EXIT HOLE) 21008 WARNING, 20384 HIGH VOLTAGE WASHDOWN INSTRUCTIONS DATA PLATE 20385 ISOLATE 21370 CE LABEL 21304 START UP / SHUT DOWN INSTRUCTIONS...

  • Page 31: Warranty Policy

    Warranty Policy EQUIPMENT L.B. White Co., Inc. warrants that the component parts of its A warranty card on file at L.B. White will automatically qualify equipment are free from defects in material and a unit and its component parts for warranty consideration. If...

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