Mr. Heater MH50K - Manual (Page 3)

3 Operating Instructions and Owner’s Manual Mr. Heater |Kerosene Forced Air Heater
OPERATING PRECAUTIONS
This is a kerosene, direct-fired, forced air heater. It's intended
use is primarily temporary heating of buildings under
construction, alteration or repair.
Direct-Fired means that all of the combustion products enter
the heated space. Even though this heater operates very
close to 100 percent combustion efficiency, it still produces
small amounts of carbon monoxide. Carbon monoxide (called
CO) is toxic. We can tolerate small amounts but not a lot.
CO can build up in a heated space and failure to provide
adequate ventilation could result in death.
The symptoms of inadequate ventilation are:
• headache
• dizziness
• burning eyes and nose
• nausea
• dry mouth or sore throat
So, be sure to follow advice about ventilation in these
operating instructions.
Forced Air means that a blower or fan pushes the air
through the heater. Proper combustion depends upon this
air flow; therefore, the heater must not be revised, modified
or operated with parts removed or missing. Likewise, safety
systems must not be circumvented or modified in order to
operate the heater.
When the heater is to be operated in the presence of other
people the user is responsible for properly acquainting those
present with the safety precautions and instructions, and of
the hazards involved.
SAFETY PRECAUTIONS
1. Check the heater thoroughly for damage. DO NOT operate a
damaged heater.
2. DO NOT modify the heater or operate a heater which has
been modified from its original condition.
3. Use only Kerosene or #1 fuel oil. Never use gasoline,
naphtha, paint thinner, alcohol or other fuels of any kind.
4. For indoor use only. Use only in well ventilated areas.
Provide at least 2 sq. ft. of opening near the floor and
2 sq. ft. of opening near the ceiling. (Also see "Operating
Precautions").
5. Install the heater such that is is not directly exposed to water
spray, rain and/or dripping water.
6. Maintain minimum clearance from normal combustible
material (like paper) at least 8 ft. from the heater outlet and
3 ft. from the top, sides and inlet. Locate 10 ft. from convas
or plastic coverings and secure them to prevent flapping or
movement.
7. Due to the high surface and exhaust temperatures, adults
and children must observe clearances to avoid burns or
clothing ignition.
8. Never use in areas normally for habitation and/or where
children may be present.
9. Operate only on a stable, level surface.
10. Do not use with ductwork. Do not restrict inlet or exit.
11. Use only the electrical power specified. The electrical
connection and grounding must comply with National
Electrical Code - ANSI/NFPA 70 (USA) and CSA C22.1
Canadian Electrical Code, Part 1 (Canada).
12. Use only a properly grounded 3-prong receptacle or
extension cord.
13. Do not move, handle or service while hot or burning.
14. Use only in accordance with local codes and federal
ordinances.