1. Manuals
  2. Brands
  3. L.B. White Manuals
  4. Gas Heater
  5. Therma Grow HW120
  6. Owner's manual and instructions

L.B. White Therma Grow HW120 Owner's Manual And Instructions

Greenhouse heater
Hide thumbs Also See for Therma Grow HW120:
Table of Contents

Advertisement

Quick Links

Download this manual
SCAN THIS QR CODE
with your smartphone or
visit http://goo.gl/ny7ua to
view maintenance videos
for L.B.White heaters.*
*Requires an app like QR Droid for Android or
QR Reader for iPhone.
Owner's Manual and Instructions
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 1-800-345-7200.
ATTENTION ALL USERS
This heater has been tested and evaluated by C.S.A. International, in accordance
with CSA International Requirement 1.95 U.S.- Greenhouse Heaters 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.
Therma Grow
™
View this manual online at www.lbwhite.com
MODELS
OUTPUT (Btuh)
HW120
120,000
Greenhouse Heaters
FUEL
Available in either
L.P. Gas Vapor
Withdrawal or
Natural Gas
Configurations.
150-27698 REV.A

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Therma Grow HW120 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for L.B. White Therma Grow HW120

Summary of Contents for L.B. White Therma Grow HW120

  • Page 1 *Requires an app like QR Droid for Android or We, at L.B. White, thank you for your confidence in our products and QR Reader for iPhone. welcome any suggestions or comments you may have...call us, toll-free, at 1-800-345-7200.
  • 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 The L.B. White Co., Inc. has a policy of continuous product your unit. Have your qualified installer review this manual improvement. It reserves the right to change specifications with you so that you fully understand the heater and how it and design without notice.

  • Page 4: Heater Specifications

    Heater Specifications Model HW120 SPECIFICATIONS Propane Natural Maximum Input (BTUH) 120,000 Minimum Input (BTUH) 65,000 200 CFM EXHAUST FAN Indoor Mounting Air Exchange Requirements 120 sq. in. SHUTTERED AIR INLET Outdoor Mounting Air SHUTTERED 64 sq. in. Exchange Requirements EXHAUST OUTLET Inlet Gas Supply 13.5 11.0...

  • Page 5: Safety Precautions

    Refer to the specification section and installation quarters. instructions of the heater’s Owner’s Manual, heater dataplate, or contact the L.B. White Company to ■ Do not use in areas without proper air exchange. See determine air exchange requirements of the heater.
  • Page 6 Commonwealth of Massachusetts heating season and at least annually. 2. All installations and applications of L.B. White heaters 12. Always turn off the gas supply to the heater if the must meet all relevant local, state and national heater is not going to be used.

  • Page 7: Installation Instructions

    Contact your gas supplier, or the This greenhouse heater has been specifically developed for L.B. White Co., Inc. if you have any questions. very low levels of these combustion by-products. However, it is necessary to have an exchange of air within the 5.

  • Page 8: Air Discharge Diverter Duct Installation Instructions

    Stand clear while the main burner ignites to withdrawal system or application. If you are in doubt, prevent injury caused from hidden leaks that contact the L.B. White Co., Inc. could cause flashback. With the main burner in operation, check all 15.

  • Page 9: Indoor Ventilation Requirements

    INDOOR VENTILATION REQUIREMENTS This heater requires a properly sized motorized air inlet shutter, FIG. 4c Side View flexible duct, and exhaust fan. All items must be installed when the heater is located within the greenhouse. These components, along with specific instructions, are HEATER provided in the indoor ventilation kit, part number 25995.

  • Page 10: Hanging The Heater

    Exhaust Fan FIG. 5 The exhaust fan must be located at an upper area of the EXHAUST FAN IN UPPER end wall opposite from the heater, preferably in an area AREA OF GREEN HOUSE higher than the heater’s discharge. See Fig. 5. The fan does not need to be directly in line to the heater.

  • Page 11: Sediment Trap Assembly Instructions

    SEDIMENT TRAP ASSEMBLY Assemble the tee, nipples and cap together and tighten FIG. 7 NIPPLE securely. See Fig. 7. The sediment trap assembly must HOSE ADAPTER always be mounted in a vertical position. Make sure pipe thread compound that is resistant to both L.P. gas and natural gas is used in making all connections.
  • Page 12 B. Single Stage Thermostat C Building Controller Connections - Heating (Non-Power Contacts) 1. Operate on first stage heat only. 1. Operate on first stage heat only. TO CONTROL SINGLE STAGE BUILDING CONTROLLER THERMOSTAT (HEAT CONTACT) FROM CONTROL GREEN YELLOW BLUE GROUND GREEN BLACK...

  • Page 13: Manual Shut-Off Valve, Hose And Regulator Assembly Instructions

    3. Operate both stages of heat. FIRST STAGE HEAT CONTACT SECOND STAGE HEAT CONTACT GREEN GROUND HSIG TRANSFORMER IGNITION CONTROL YELLOW 120V BROWN BROWN GAS CONTROL VALVE BROWN GROUND HIGH LIMIT SWITCH MANUAL SHUT-OFF VALVE, HOSE AND REGULATOR ASSEMBLY 1. Always use approved pipe thread compound suitable FIG.

  • Page 14: Start-Up Instructions

    Start-Up Instructions For initial start-up after heater installation, follow steps 1-6. assistance in troubleshooting. Only qualified and For normal start-up, simply set the thermostat above room properly trained personnel shall service or repair the temperature. heater. Connect electrical cord to an approved electrical outlet. B.

  • Page 15: Shut-Down 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 16: Service Instructions

    Service Instructions GENERAL 4. The thermostat, and high limt switch can be tested by WARNING jumpering the suspect part out of the electrical Burn Hazard ■ circuit.: Heater surfaces are hot for a period of time after the heater has been shut down. -- Reconnect the electrical supply and open fuel ■...

  • Page 17: Air Proving Switch

    AIR PROVING SWITCH Remove two sheet metal screws holding air proving FIG. 12 NUTS switch blower housing. Remove assembly by turning switch assembly 90 degrees so the switch paddle PADDLE can be pulled through oblong hole on side of fan housing.

  • Page 18: Gas Pressure Checks

    35 in. W.C. (may also be ordered on the dataplate, then the HI and LO heat output from L.B. White, part number 00764) feature of the gas control valve requires adjustment. A. Preparation 5.

  • Page 19: Igniter & Flame Sensor

    IGNITER 1. Disconnect the plastic male and female plugs located 4. Slide the igniter shield over the igniter so hole in at the end of the igniter leads. See Fig. 16 shield aligns with hole in igniter and bracket. ■ 2.

  • Page 20: Troubleshooting Instructions

    Troubleshooting Instructions OPERATION SEQUENCE: READ THIS ENTIRE SECTION BEFORE BEGINNING TO -- Line voltage is sent to selector switch. TROUBLESHOOT PROBLEMS. -- Selector switch is positioned to HEAT. WARNING -- Line voltage is sent to transformer -- Terminal at transformer branches off line voltage to . . ■...

  • Page 26: Electrical Connection And Ladder Diagram

    Electrical Connection and Ladder Diagram...

  • Page 27: Heater Component Function

    Heater Component Function Air Proving Switch Hot Surface Igniter Safety device used to insure that the proper air flow is being Ignition device used on automatic ignition control systems. achieved before the gas valve is opened. Ignites gas by surface temperature rather than spark or flame.

  • Page 28: Parts Identification (Parts List & Schematic)

    Parts Identification PARTS SCHEMATIC...

  • Page 29: Parts List

    Parts Identification PARTS LIST Item Description Part Number Regulator, LP Gas, 2nd Stage, Vent Over Outlet 06553 Regulator, LP Gas, 2nd Stage, Vent Over Side 06665 Regulator, Natural Gas (5 PSIG Inlet, 13.5 Outlet) 24414 Valve, Manual Shut Off with Nipple 03399 Hose, 1/2 in.

  • Page 30: Warranty Policy

    L B. White. L.B. White Co., Inc. will at its option, repair or replace the defective part or heater, with a new part or heater, F.O.B., Onalaska, Wisconsin, USA.

Table of Contents