There may be some circumstances where the use of short lengths of duct may not create sufficient pressure drop to achieve the desired temperature rise. This may also be the case of using the unit without a duct. This insufficient static pressure drop may result in high air flow, with the maximum temperature rise below the desired level, (even after the fan speed has been reduced to the minimum rpm). An accessory AD16, adjustable damper, is available and can be attached to the heater to produce a

Do not operate heater IMPORTANT: where flammable vapors, gases or liquids are present. Heaters in the heat mode should not be operated in SAVE THESE INSTRUCTIONS room temperatures above 130°F. Fan motor is not designed to operate in ambients below -10°F. To avoid personal injury read “IMPORTANT INSTRUC RISK OF FIRE. Do not use as a residential or house- TIONS” on page 2 before installation or operation of hold heater heater. Hazard of Fire or Discoloration of Temperature Keep electrical cords an