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Available in either

L.P. Gas Vapor

Withdrawal or

Natural Gas

Configurations.

MODELS

OUTPUT 

(Btuh)

FUEL

HD220

220,000

Congratulations!

You have purchased the finest direct fired greenhouse 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, toll-free, 

at (800) 345-7200.

Owner's Manual and Instructions

GreenGro Plus

Greenhouse Heaters

ATTENTION ALL USERS

This heater has been developed by L.B.White Company for use as a direct

gas-fired circulating heater for the heating of greenhouses.  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.

150-26558

Summary of Contents for GreenGro Plus HD220

Page 1: ...ology We at L B White thank you for your confidence in our products and welcome any suggestions or comments you may have call us toll free at 800 345 7200 Owner s Manual and Instructions GreenGro Plus...

Page 2: ......

Page 3: ...l injury or loss of life 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...

Page 4: ...have any questions about the use of the equipment or its application The L B White Co Inc has a policy of continuous product improvement It reserves the right to change specifications and design witho...

Page 5: ...ter operation if air inlet and exhaust outlet do not open when heating is required Model Indoor Mounting Air Exchange Requirements 1 Burner Manifold Pressure In W C Net Weight lbs Shipping Weight lbs...

Page 6: ...efore you return Properly trained service people must repair the leak check for further leakages and then relight the appliance for you WARNING Do not use this heater for heating human living quarters...

Page 7: ...h 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 Do not operate the heater with its door open 7...

Page 8: ...to instructions provided in the optional L B White outdoor mounting and ducting kit part number 23579 4 The heater must have the proper gas regulator installed for the application A regulator must be...

Page 9: ...tected by a separate back up control system that limits high and low temperatures and also activates appropriate alarms 16 Take time to understand how to operate and maintain the heater by using this...

Page 10: ...t See Fig 4b The motorized air inlet must be no more than 1 ft from the back of the heater and properly aligned to the heater See Fig 4c The heater should have a minimum clearance of 1 ft above the gr...

Page 11: ...lts and chain according to the illustration and tighten all eyebolts securely FIG 7 3 Ensure the heater is securely fastened to overhead supports and is hanging level Check crosswise and lengthwise 4...

Page 12: ...eat The GreenGro incorporates a manual heat vent switch When in the heat position the heater operates normally When in the vent position the heater fan operates continuously In the vent mode the heate...

Page 13: ...te on first stage heat only Remove jumper at terminals 8 and 9 Connect controller contacts in terminals 8 and 9 2 Operate on second stage heat only Remove jumper at terminals 8 and 9 Move jumper to te...

Page 14: ...ALVE HOSE REGULATOR ASSEMBLY REGULATOR NIPPLE VALVE MANUAL SHUT OFF GAS HOSE ADAPTER SEDIMENTTRAP TO CONTROL VALVE INLET REGULATORVENT GAS FLOW 1 Always use approved pipe thread compound suitable for...

Page 15: ...ignition DSI control board within this heater is self diagnostic The board works in conjunction with a light emitting diode L E D built into the selector switch The L E D will flash a specific contin...

Page 16: ...odic cleaning and inspection as well as proper maintenance are essential to avoid serious injury or property damage 1 The area surrounding the heater shall be kept clear and free from combustible mate...

Page 17: ...latch the access panel Start the heater and check for proper operation FIG 13 AIR PROVING SWITCH 16 Service Instructions 1 Close the fuel supply valve to the heater and disconnect the heater s electri...

Page 18: ...ME SENSOR 17 BLOWER OUTLET OF HEATER AIR PROVING SWITCH ARM OF FLAPPER AIR PROVING SWITCH ARM FANWHEEL PIVOT POINT OF FLAPPER EDGE OF FLAPPER PIVOT POINT OF FLAPPER FLAPPER 31 7 MMTO 34 9 MM 1 Ensure...

Page 19: ...agree with that specified on the dataplate If so then no further checking or adjustment is required Proceed to section D 3 If the inlet pressures do not agree with that specified on the dataplate the...

Page 20: ...hich indicates the contacts of the switch have opened Check for lack of electrical continuity across the switch terminals to verify contacts have opened 5 Allow the switch cool down for about a minute...

Page 21: ...B Motor Hums Does Not Run 25 Components should be replaced only after each step has been completed and replacement is suggested in the flow chart Refer to the Servicing sections as necessary to obtai...

Page 22: ...e 24 Volts Supplied from Transformer No No No No No Yes Is Proper Voltage Supplied to Transformer No Yes Yes No See One Time Flash L E D Light is Defective Replace Ignition Control Check Dataplate for...

Page 23: ...sitions Yes Repair Air Proving Switch One Time Flash Pattern Begins Immediately After Condition Occurs Is Air Proving Switch Stuck Closed Check Continuity Is Airflow Switch Binding Repair Yes Yes No N...

Page 24: ...Blade Set Screw Is Proper Voltage Supplied to Fan Motor No Yes Defective Motor or Capacitor Replace Motor or Capacitor Is Ignition Control Module Sending Proper Voltage to Motor Relay Is Ignition Modu...

Page 25: ...Heat Turn Unit On Should Hear Audible Click When Valve Opens Approx 4 5 Seconds After Power is Supplied To Unit Is Ignitor Properly Gapped Are 24 Volts Supplied to Terminal MV on Gas Valve Defective G...

Page 26: ...onnections Verify Proper Voltage with a Voltage Tester Contact a Qualified electrician if Proper voltage is not Present No No Yes Is Proper Voltage Supplied to Selector Switch from Power Cord No VENTI...

Page 27: ...R SELECTOR SWITCH ELECTRICAL LADDER DIAGRAM IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE HEATER MUST BE REPLACED IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 3...

Page 28: ...R JUMPER POWER SUPPLY 1 2 3 4 5 6 7 8 9 10 BROWN IGNITER FLAME SENSOR HIGH VOLTAGE IGNITION LEAD OPTIONAL THERMOSTAT BURNER GROUND GROUND GROUND HIGH LIMIT SWITCH BLACK BLACK L1 IND L E D MV PS2 PS1 W...

Page 29: ...eat Chamber Metal fire box within the appliance that provides an area where burner flame mixes with combustion air thereby providing heat High Limit Switch Safety device wired into the control system...

Page 30: ...24 35 34 22 36 37 33 32 30 27 23 26 25 29 28 31 7B 7A 17 18 15 8 10 5 4 13 11 12 3 6 9 16 20 19 2 7 21 1 14 Parts Identification PARTS SCHEMATIC 29...

Page 31: ...Assembly 23780 19 Switch High Limit 05566 20 Heat Chamber LP Gas 27488 Natural Gas 26570 21 Case Assembly w Doors Latches 1 23482 22 Cover Control Box 2 23481 23 Plug Window 08255 24 O Ring 08347 25...

Page 32: ...rchase by the end user Warranty is automatic if a component is found defective within 12 months of the date code marked on the part If the defect occurs more than 12 months later than the date code bu...

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