Owner's Manual and Instructions GUARDIAN ® Agricultural Animal Confinement Building Heaters MODELS AW325 OUTPUT (Btuh) FUEL 325,000 All Models are available in either L.P. Gas Vapor Withdrawal or Natural Gas Configurations. Certification by: 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.
GENERAL HAZARD WARNING ■ Failure to comply with the precautions and instructions provided with this heater, can result in: — Death — Serious bodily injury or burns — Property damage or loss from fire or explosion — Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning — Electrical shock ■ Read this Owner’s Manual before installing or using this heater. ■ Only properly-trained service people should repair or install this heater. ■ Save this Owner’s Manual for future use and reference.
Table of Contents SECTION PAGE General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater Specifications Model AW325 SPECIFICATIONS L.P. Gas Natural Gas Maximum Input (BTUH) Minimum Input (BTUH) 325,000 200,000 Ventilation Air Required to Support Combustion 1,700 CFM Inlet Gas Supply Pressure Acceptable at the Inlet of the Heater for Purpose of Input Adjustment 13.5 in. W.C. MAX. 11 in. W.C. 7 in. W.C. 8 in. W.C. 3.5 in. W.C. MAX. 15.05 lbs. 325 cu. ft. MIN. 9.26 lbs. 200 cu. ft. MIN.
Safety Precautions WARNING Asphyxiation Hazard ■ Do not use this heater for heating human living L.B. White Company to determine combustion air quarters. ventilation requirements of the heater. ■ Do not use in unventilated areas. ■ The flow of combustion and ventilation air must not be obstructed. ■ Lack of proper ventilation air will lead to improper combustion. ■ Proper ventilation air must be provided to support the combustion air requirements of the heater being used.
1. Do not attempt to install, repair, or service this heater or the gas supply line unless you have continuing expert training and knowledge of gas heaters. Qualifications for service and installation of this equipment are as follows: 5. For safety, this heater is equipped with a manual reset high-limit switch and an air flow switch. Never operate this heater with any safety device that has been bypassed. Do not operate this heater unless all of these features are fully functioning. 6.
Installation Instructions GENERAL WARNING Fire or explosion hazard. Can cause property damage, severe injury or death. 1. Disconnect power supply before wiring to prevent electrical shock or equipment damage. 2. To avoid dangerous accumulation of fuel gas, turn off gas supply at the heater service valve before starting installation, and perform gas leak test after completion of installation. 3. Do not force the gas control knob. Use only your hand to turn the gas control knob. Never use any tools.
14. It is extremely important to use the proper size and type of gas supply line to assure proper functioning of the heater. Contact your fuel gas supplier for proper line sizing and installation. 15. This heater can be configured for use with either L.P. gas vapor withdrawal or natural gas. Consult the dataplate for the gas configuration of the specific heater. Do not use the heater in an L.P. liquid withdrawal system or application. If you are in doubt, contact the L.B. White Co., Inc. 16.
HANGING INSTRUCTIONS FIG. 2 EYEBOLT CHAIN FIG. 3 NOTE: REGULATORS SHOULD ALWAYS BE MOUNTED OUTDOORS. IF CIRCUMSTANCES FORCE INSTALLING THE REGULATOR INDOORS, THE REGULATOR'S VENT MUST BE VENTED OUTDOORS USING VENT LINE NO SMALLER THAN VENT OPENING. VENT OF REGULATOR MUST POINT DOWN AND REGULATOR MUST BE VENTED OUTDOORS MANUAL SHUT-OFF VALVE CAN BE INSTALLED BEFORE THE REGULATOR, UNDER THE EAVE OF THE BUILDING, OR AFTER THE REGULATOR INSIDE THE BUILDING.
THERMOSTAT INSTALLATION WARNING Electrical Shock Hazard ■ Disconnect the electrical supply before connecting the thermostat to the heater. ■ Failure to follow this warning can result in electrical shock, leading to personal injury or death. 1. To Connect the Series Tap Plug Thermostat Kit: a. Connect the power cord of the heater to the female side of the plug on the end of the thermostat cord. b.
Start-Up Instructions module is a red light emitting diode (LED). This LED indicates the status of the heater. The LED is visible external of the control enclosure through the plastic eye. A constant light from the LED is an indicator that the heater is functioning correctly. Any flash pattern by the LED is indicative that there is a problem in the operation of the heater. Refer to the troubleshooting decal on the access panel at the fan motor end of the heater for assistance in troubleshooting.
Variable Heat Output 1. Some models of propane (LP) gas or natural gas heaters have a throttle valve for varying heat output located between the gas control valve and gas manifold assemblies. THIS IS NOT A MANUAL GAS SHUT OFF VALVE. 2. The throttle valve can be adjusted to deliver either minimum heat or maximum heat. When the throttle valve handle is parallel to the gas flow, the valve is FIG. 7 completely open to deliver maximum heat output. (Refer to Fig. 7.
Cleaning Instructions WARNING Fire, Burn, and Explosion Hazard ■ This heater contains electrical and mechanical components in the gas management, safety and airflow systems. ■ Such components may become inoperative or fail due to dust, dirt, wear, aging, or the corrosive atmosphere of an animal confinement building. ■ Periodic cleaning and inspection as well as proper maintenance are essential to avoid serious injury or property damage. 1.
Electrical Connection and Ladder Diagram CAUTION Always refer to the heater’s electrical connection diagram when servicing to avoid wiring errors and heater malfunction. Check for proper operation after servicing. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE HEATER MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING THAT HAS A TEMPERATURE RATING OF AT LEAST 302O F. (150O C.
Heater Component Function Air Proving Switch Safety device used to insure that the proper air flow is being achieved before the gas valve is opened. Burner Cast iron component used to channel gas and provide an area at which the fuel may ignite. Burner Orifice Brass metering device used to feed gas to burner at a specific rate. Fan Housing Chamber used for compressing air for ef ficient air movement.
Parts Identification PARTS SCHEMATIC 33 25 32 23 26 24 34 38 27 29 28 30 35 31 21 36 37 39 10 20 22 19 17 11 1 18 16 15 41 43 2 14 3 12 7 6 8 5 9 13 40 16 42 TO SE DIM T EN TR AP 4
PARTS LIST Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 (1) Description Part Number Regulator, LP Gas, 2nd Stage Vent Over Side Regulator, LP Gas, 2nd Stage Vent Over Outlet Regulator, Natural Gas, 2nd Stage Nipple, 1/2 x 3 1/2 Valve, Manual Shut Off Adapter, 1/2 NPT x 1/2 NPS Hose, 1/2 in. x 10 ft.
Warranty Policy HEATER L.B. White Co., Inc. warrants that the component parts of its heater are free from defects in material and workmanship, when properly installed, operated, and maintained in accordance with the Installation and Maintenance Instructions, safety guides and labels contained with each unit. If, within 12 months from the date of purchase by the end user, any component is found to be defective, L.B. White Co., Inc.
