Cleaning Instructions; Maintenance Instructions - L.B. White Therma Grow 120NG Owner's Manual And Instructions

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This heater contains electrical and mechanical components in the gas management, and safety systems.
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Such components may become inoperative or fail due to dust, dirt, wear and aging.
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Periodic cleaning and inspection as well as proper maintenance are essential to avoid serious injury or property
damage.
1. Before cleaning, shut off all gas supply valves and
disconnect electrical supply.
2. At least once a year give the heater a thorough
cleaning, preferably before the beginning of the fall
heating season. At that time, remove the fan and
motor assembly and brush or blow off the fan wheel.
Additionally, ensure the burner casting and orifice are
free of dust accumulation, insect nests, webs, etc.
1. The area surrounding the heater shall be kept clear
and free from combustible materials, gasoline, and
other flammable vapors and liquids.
2. Have your gas supplier check all gas piping annually
for leaks or restrictions in gas lines.
3. Regulators must be periodically inspected to make
sure the regulator vents are not blocked. Debris,
insects, insect nests, snow, or ice on a regulator can
block vents and cause excess pressure at the heater.
4. Regulators can wear out and function improperly.
Have your gas supplier check the date codes on all
regulators installed and check delivery pressures to
the heater to make sure that the regulator is reliable.
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WARNING
Fire, Burn, and Explosion Hazard
Do not use a pressure washer, water, or liquid cleaning
solution on any heater components. Use of a pressure
washer, water, or liquid cleaning solution on the control
components can cause severe personal injur y or
property damage due to water and/or liquids:
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In electrical components, and wires causing electrical
shock or equipment failure.
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On gas control valves causing corrosion which can
result in gas leaks and fire or explosion from the leak.
Clean all internal components of the heater with
pressurized air, a dry brush, or a dry cloth.

Maintenance Instructions

5. Check all wiring associated terminals and electrical
components within the heater for corrosion, frayed or
cut insulation, tight connections, etc. Repair or
replace as necessary.
6. Review all heater markings (i.e. wiring diagram,
warnings, start-up, shut-down, troubleshooting, etc.)
at the time of maintenance for legibility. Make sure
none are cut, torn, or otherwise damaged. Any
damaged markings must be replaced immediately by
contacting the L.B. White Co., Inc. Dataplates, start-
up and shut-down instructions and warnings are
available at no cost. A nominal charge will be applied
for wiring diagrams.

Cleaning Instructions

WARNING