Hydrocarbon Guidelines
2
Propane (R290) is highly approved for use as a refrigerant in commercial, self-contained units in the US under limited
use conditions. It can only be used in new equipment. Backfitting or modifications of old equipment are not allowed. It
must be charged in a strictly limited volume of up to 150 grams (5.3 oz) per refrigeration circuit. Even though this is a
small amount, it still presents a fire or explosion hazard if it leaks out of parts that hold refrigerant. When it comes in
contact with air, a flammable propane-air mixture can be created and easily ignited by electrical sparks, open flames
or hot surfaces. The risk is higher in small, confined, poorly ventilated spaces. Propane will settle at lower zones
because it is heavier than air. To reduce these risks, observe the following precautions
• Avoid installation of unit in areas with open flames or in general vicinity of open flames or high surface
temperatures.
• Avoid unit installation in small, confined spaces. Ensure ample ventilation at all times. Keep all exhaust vents
free of any blockage or obstruction.
• Do not rely on smell to detect potential leaks of propane refrigerant. Propane refrigerant is a high purity
propane gas and does not contain odourants or stenching agents. These additives are typically used in fuel-
grade propane and natural gas in order to give them a distinctive smell which makes it easier to detect leaks.
• General service and repairs must be performed in well-ventilated areas. General service and repairs must be
performed only by professionals authorized by Everest Refrigeration.
• Component shall be replaced with Everest-issued, like components to minimize the risk of possible ignition
resulting from incompatible parts or improper repairs.
• Do not modify, re-appropriate or remove any functional part(s) from the unit.
• Handle the unit with care to avoid any damage.
• Practice safety guidelines when transporting the unit. Consult with your local Department of Transportation for
requirements in moving flammable gasses.
