Incorrect use of this product can lead to serious injury or even death. Read and follow all warnings and
instructions before operating or using this product.
Using this product above its intended operating temperature of +40 degrees F, can cause overheating of
the heater unit and/or damage tools & materials stored above the heater.
• The power connection to KNAACK THERMOSTEEL must be supplied by an extension cord rated for
outdoor use and plugged into 3-prong, 120V • GFCI (ground fault circuit interrupter) protected outlet
with proper ground.
• If a GFCI outlet is not available, use extension cord with GFCI protection built in.
• Protect the heater from rain or liquid contact.
• Protect electronics from high surface temperatures directly above the heater.
• Do not touch metal surfaces of heater enclosure or shelf above heater while heater is operating due to
high temperatures of these surfaces.
• To prevent electrical shock, explosion, fire and serious personal injury when using extension cords with
• KNAACK THERMOSTEEL:
• This heater must be plugged into a 120V, 15 amp (or more) circuit of its own. Do not plug anything
else into the same circuit. If unsure if your power source meets this specification, consult a certified
electrician prior to use. Risk of fire, overheating, malfunction, property damage, injury or even death
may result if not adhered to!
• Follow all extension cord manufacturer’s warnings and instructions when used with this product.
• Use only 3-wire extension cords with all three prongs intact. Never remove the round grounding prong.
• Check the insulation and plugs of the extension cord before using. Do not use cord if it is worn or
damaged.
• Do not overload extension cord (see table below).
• The use of extension cords not marked for Outdoor Use should not be used with KNAACK
THERMOSTEEL.
• Do not connect extension cord to an outlet that also supplies critical safety equipment with power.
• Keep flammable materials like paper or rags away KNAACK THERMOSTEEL
• Always unplug the heater when not in use.
• Do not operate any heater with a damaged cord or plug or after the heater malfunctions or has been
damaged in any manner. Contact Knaack for resolution options.
• Use this heater only as described in this manual. Any other use not recommended by Knaack may case
fire, electrical shock, or injuries to persons.
• Do not use abrasive solvents to clean the heater as it may cause damage to the finish or housing.
USE OF YOUR THERMOSTEEL
*
Using long cords with small wire size may lead to
overheating of the extension cord and reduced
heating of the KNAACK THERMOSTEEL.
