Safety Technology International STI-1229-HAZ, STI-1229HTR-HAZ, STI-1229HTR240-HAZ Installation Instructions

STI-1229-HAZ Enclosure Only
STI-1229HTR-HAZ Enclosure with 110 VAC Heater Option
STI-1229HTR240-HAZ Enclosure with 240 VAC Heater Option

Features

· Hazardous Classification Class II Groups F&G Div. 2 and Class III locations.

· Maintains operating strobe appliance temperature with external temperatures
to -70°F (-57°C).

· Enclosure tested to NEMA 4X Standards. Equivalent to an IP 66 rating.

· UL/cUL Listed.

· CSFM requires local approval only.

· Protects ADA compliant strobes to UL 1971 Standards.

Operation

For use in areas where temperature or environmental conditions exceed the operating range of
fire strobe signaling devices. Unit requires 24 VDC continuous for fan operation and 110 VAC
or 240 VAC for heater, as well as power for strobe operation and supervision for temperature
indicator. Fan runs continuously to maintain uniform temperature. Heater cycles as required
to maintain operating temperature range for listed strobes.

We protect the things that protect you.

®

Warnings

The enclosure is used to protect UL/cUL listed 1638 and 1971 visual notification appliances at
temperatures down to -70˚F (-57˚C). It is the installer’s responsibility to comply with NEC 70 Articles
502 and 503, NFPA72, 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. On the appliance mounting plate is a label where you
should record the installation date. Also include below the serial number and installation date on the
instruction sheet for quick reference.

Serial Number__________________________________ Installation Date__________________

Installation Notes

1. The enclosure is rated to protect signaling appliances indoors and outdoors and in areas of direct
weather exposure.

2. When covering fire-signaling appliances with the enclosure, some light loss occurs. Please follow
the guidelines listed during installation.

3. Strobe light loss values for respective manufacturers are shown on page 3. To determine the new
composite candela value of the use with the guard refer to the sample calculation shown on page
3 for a manufacturer’s strobe.

4. Record the manufacturer’s candela value as “A” and the light loss value as “B” and the assembly
value as “C”. Example: A 60 candela strobe with a 30% light loss transmission value. Value “A” is
now 60. Value “B” is (60 times 30% or 0.30) in this case 18.

5. Now value “C” is value “A” minus value “B” or 60-18 = 42 candela light source. Now refer to NFPA
tables for proper room size that newly established value “C” will work in. Then submittal installation
drawings must show the composite candela value in this example 42.

6. On a multiple candela value strobe such as 15/30/75 a calculation must be done for each value
and the drawing notation composite value for each number on the strobe.

7. All field wiring within this enclosure must be rated for a minimum operating range of 0ºC - 110ºC.

Performance Review

Manufacturer Category/Model Light Loss

American Security Equip. Co. Select-a-strobe SL24W-153075 36% Light Loss

Faraday 2700 33% Light Loss

Gentex GES24* 36% Light Loss

System Sensor SS24110ADA 35% Light Loss

*NOTE: GES24 may be followed by W, R or P.

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Polycarbonate Cleaning Instructions

Rinse with water to remove abrasive dust and dirt. Wash with soap or mild detergent, using
a soft cloth. Rinse once more, then dry with a soft cloth or chamois. Exercise caution when
using water inside enclosure. Make sure unit is completely dry inside before reassembling. Do
not use razor blades.

Specications

Polycarbonate Enclosure

Flammability UL94 V-2
Wall Thickness 0.2 in. (5.1mm)
NEMA Rating 4X, indoor and outdoor use

Hazardous Rating Class II Groups F&G Div. 2 and Class III locations

Warranty Three year guarantee against breakage of polycarbonate

in normal use (one year on electro mechanical and

electronic components).

Silicone Laminate Heater

STI-1229HTR-HAZ 110 VAC 50/60 Hz UL Recognized Component

STI-1229HTR240-HAZ 240 VAC 50/60 Hz UL Recognized Component

100 Watts

Life: @-10°C (14°F) ~ 70°C (158°F) 5 Years

Duty Cycle: -40°F (-40°C) 53%

-70°F (-57°C) 71%

Fan

24 VDC, 90 mA UL Recognized Component

Life 5 Years Continuous Duty

WARNING: The polarity of the circulating fan is important as it only rotates in one
direction with red lead being positive.

Gasket

Material Neoprene

Life 5 Years

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