L.B. White GUARDIAN Smart Sense AD250 Owner's Manual And Instructions

Agricultural animal confinement building heaters with smart sense automatic variable rate heat for use with smartbox controller

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Owner's manual and instructions (31 pages)

Assembly and installation instructions manual (24 pages)

Owner's manual (64 pages)

Table Of Contents

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Summary of Contents for L.B. White GUARDIAN Smart Sense AD250

Page 1 1-800-345-7200. ATTENTION ALL USERS This heater has been designed, tested and evaluated by L.B. White Co. Inc. as a direct gas-fired circulating heater for the heating of agricultural animal confinement buildings, and is approved for either indoor or outdoor mounting. To utilize the Smart Sense ™...
Page 2 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 800-345-7200. WARNING ■ Proper gas supply pressure must be provided to the inlet of the heater.
Page 3: Table Of Contents
This manual will instruct you in the operation and care of your unit. Have your qualified installer review this manual The L.B. White Co., Inc. has a policy of continuous product with you so that you fully understand the heater and how it improvement.
Page 4: Heater Specifications
Heater Specifications Model AD250 SPECIFICATIONS Propane Natural Type Fuel Maximum Input (BTUH) 250,000 Minimum Input (BTUH) 65,000 Ventilation Air Required 1,050 to Support Combustion (CFM) Inlet Gas Supply 13.5 MAX. Pressure Acceptable at the Inlet of the Heater for Purpose of Input 11.0 MIN.
Page 5: Basic Operation
Building controller recognizes desired temperature has zone . been achieved. g. Building controller disconnects signal from ™ SmartBox h. Heater shuts down. Process begins again on a call for heat. FIG. 1 L.B. WHITE ENVIRONMENT ™ SmartBox CONTROLLER FANS CONTROL SIGNAL GUARDIAN TO GAS VALVE...
Page 6: Safety Precautions
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. Lack of proper ventilation air will lead to improper combustion.
Page 7 2. All installations and applications of L.B. White heaters 13. This heater is equipped with a three-prong must meet all relevant local, state and national (grounding) plug for your protection against shock codes.
Page 8: Installation Instructions
-- Stand clear while the main burner ignites to dataplate at all times. Contact your gas supplier, or the prevent injury caused from hidden leaks that L.B. White Co., Inc. if you have any questions. could cause flashback. 6. The heater’s gas regulator (with pressure relief valve) -- With the main burner in operation, check all should be installed outside of building.
Page 9: Air Diverter Installation Instructions
If you are in 19. Do not exceed input rating stamped on the dataplate doubt, contact the L.B. White Co., Inc. of the heater. Do not exceed the burner manifold pressure stated on the dataplate. Do not use an 16.
Page 10: Hanging Installation Instructions
HANGING INSTRUCTIONS 1. Assemble according to the illustration and tighten all FIG. 4 eyebolts securely. See Fig. 3. NOTE: REGULATORS SHOULD ALWAYS BE MOUNTED OUTDOORS. IF FIG. 3 NOTE: REGULATORS SHOULD ALWAYS BE MOUNTED OUTDOORS. IF CIRCUMSTANCES FORCE INSTALLING THE REGULATOR INDOORS, CIRCUMSTANCES FORCE INSTALLING THE REGULATOR INDOORS, THE REGULATOR’S VENT MUST BE VENTED OUTDOORS USING VENT THE REGULATOR'S VENT MUST BE VENTED OUTDOORS USING VENT...
Page 11: Manual Shut-Off Valve, Hose And Regulator Assembly Instructions
MANUAL SHUT-OFF VALVE, HOSE AND REGULATOR ASSEMBLY (Accessory) 1. Always use approved pipe thread compound suitable FIG. 6 for use with L.P. gas or natural gas on the threaded VALVE, MANUAL connections. SHUT-OFF 2. Assemble the components together according to the NIPPLE figure.
Page 12: Interconnection For Variable Heat
INTERCONNECTION FOR VARIABLE HEAT ■ Complete installation and operating instructions are b. Route the wiring from these leads through the gas provided separately with the SmartBox inlet hole at the heater’s case. See Fig.9. ™ ■ Use customer supplied wire nuts and other c.
Page 13: Start-Up Instructions
Start-Up Instructions Follow steps 1 - 6 on initial start-up after heater installation On a call for heat, the motor will start up and run for by a qualified gas heater service person. For normal start- five (5) seconds. This pre-purge is a safety feature up, set the building controller to call for heat.
Page 14: Cleaning Instructions
L.B. White Co., Inc. Dataplates, start- up and shut-down instructions and warnings are 4. Regulators can wear out and function improperly.
Page 15: Service Instructions
Service Instructions GENERAL 4. The high limit heat switch will open if it overheats. It WARNING must be manually reset. If the high limit switch does Burn Hazard ■ not reset, it can be tested by jumpering the switch out Heater surfaces are hot for a period of time after the of the electrical circuit.: heater has been shut down.
Page 16: Air Proving Switch With Paddle
AIR PROVING SWITCH WITH PADDLE 1. Open the case access panel on the control box end of FIG. 12 NUTS the heater. PADDLE 2. Remove the two (2) sheet metal screws holding the switch with bracket to blower housing. Remove the assembly by turning the switch assembly 90°so the paddle on the switch arm can be pulled through the oblong hole on side of fan housing.
Page 17: High Limit Switch
TESTING THE MANUAL RESET HIGH LIMIT SWITCH 5. Allow the switch cool down for about a minute before WARNING firmly pressing the reset button on the switch. Fire Hazard ■ Do not operate the heater with the high limit switch 6.
Page 18: Gas Pressure Checks
Gas Pressure Checks 2. Securely connect a pressure gauge to each pressure WARNING tap. See Fig.17. ■ Do not disassemble the gas control valve. FIG. 17 ■ Do not attempt to replace any components of the gas control valve. ■ The gas control valve must be replaced if any physical damage occurs to the control valve assembly.
Page 19: Troubleshooting Instructions
• Low Pressure Gauge - (L.B. White Part No. 00764) for by the flow chart. checking inlet and manifold pressures of the gas control valve against dataplate rating.
Page 20 SPARK IGNITION OPERATION SEQUENCE: MULTIPLE IGNITION TRIAL SEQUENCE — A call for heat occurs from the building’s environment — First trial for ignition takes approximately 10 seconds control. — Two more trials for ignition willoccur ™ — 1-15 VDC is sent from the SmartBox variable rate heat -- Second and third trial follow immediately if first controller to the variable rate solenoid on gas control...
Page 26: Electrical Connection And Ladder Diagram
Electrical Connection and Ladder Diagram CAUTION-REFER TO 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 POWER CORD GROUND GREEN 120V...
Page 27: Heater Component Function
Heater Component Function Air Proving Switch Ignition Control Module Safety device used to insure that the proper air flow is being Controls the ignition sequence and operation of the heater achieved before the gas valve is opened. as well as monitoring the safety sevices. A major service feature is the board’s ability to diagnose component and flame failure by means of a diagnostic light located within Burner...
Page 28: Parts Identification (Parts List & Schematic)
Parts Identification PARTS SCHEMATIC...
Page 29: Parts List
Parts Identification PARTS LIST Item Description Part Number Valve, manual shut off with nipple 03399* Regulator, Propane Gas, Second stage, vent over outlet 06553* Regulator, Propane Gas, Second stage, vent over side 06665* Regulator, Natural Gas, Second stage 24414* Hose, 1/2 in. ID x 10 ft. with adapter 20714* Adapter, hose, 1/2 NPT x 1/2 NPS 25873*...
Page 30: Warranty Policy
Warranty Policy HEATER L.B. White Co., Inc. warrants that the component parts of its A warranty card on file at L.B. White will automatically heater are free from defects in material and workmanship, qualify a unit and its component par ts for warranty when properly installed, operated, and maintained in consideration.