STI-1229HTR240-HAZ STI Stopper Dome Heated Enclosure for Strobe Only NEMA 4X Hazardous Locations

Environmental enclosure with 240 VAC heater for signaling appliance unit UL Listed to U.S. and Canadian safety standards and NEMA 4X Standards

Now there is a way to protect your signaling device located where temperature or environmental conditions exceed the suggested operating range. This protective cover with heater assembly for strobe appliances, is UL/cUL Listed down to -70°F (-57°C) and NEMA 4X Rated. Thermostatically controlled heater and a continuous duty fan maintain a uniform temperature in the cover when located in a cold environment. Applications include, but are not limited to, refrigerators, freezers, meat packaging plants, arctic environments, ocean rigs, slaughter houses, etc.

Specifications:

• Model Number STI-1229HTR240
• Maintains operating strobe appliance temperature with external temperatures to -70°F (-57°C).
• For use in areas where temperature or environmental conditions exceed the operating range of fire strobe signaling devices.
• Protects ADA Compliant strobes to UL 1971 standards.
• The thick, clear polycarbonate cover is UV-stabilized.
• Enables ADA Compliant for visual fire protection systems where freezing temperatures or other harsh conditions exceed the operating limits of strobe signal devices.
• Enclosure rated to NEMA 4X Standards. Heater assembly rated to -70°F (-57°C).
• UL/cUL ambient rating -70°F to 120°F (-57°C to 49°C) indoors or outdoors.
• Prevents build up of snow on the unit or entry of moisture in wash-down areas to assure that strobes remain clearly visible.
• Fan runs continuously to maintain a uniform temperature inside the enclosure.
• 240 VAC heater units cycle as required to maintain the correct range of operating temperatures.
• Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).
• Lifetime guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components).
• cUL Listing is for UL 1638 strobes only.
• CSFM requires local approval only.
• Enclosed backbox.
• Includes double gang appliance plate which eliminates the need for an electrical outlet box

Light Derating Factor

• 37% - Amseco - SL24W - 153075
• 37% - Detection Systems - GES24 Series
• 33% - Faraday LLC - 2700
• 37% - Gentex - GES24 Series (may be followed by a "W", "R" or "P")
• 37% - Harrington Signal - GES24 Series
• 37% - National Time and Signal - GES24 Series
• 33% - Siemens - U-MCS Series
• 36% - System Sensor - SS24110ADA

The enclosure is used to protect UL Listed 1638 and 1971 visual notification appliances at temperatures down to -70°F (-57°C). It is the installer's responsibility to comply with NFPA 72, NEC, and other applicable fire and electrical codes. Conduit or raceway paths need to be sealed as near to the enclosure as possible. Installer should have maintained supervision over the low temperature thermostat. The low temperature monitoring thermostat makes the circuit at +32°F (0°C) and clears the circuit at +50°F (+10°C). This listing requires that the fire alarm supervisory control module be only of the latching type. The heater assembly, fan and gaskets have a life of 5 years; after such date a field replacement kit can be purchased. On the heater assembly is a label where you should record the serial number and the installation date.