STI 1229HTR-HAZ User Manual

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.

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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 See note below* 36% Light Loss

System Sensor SS24110ADA 35% Light Loss

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

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).

Specifications

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

Warranty: Three year guarantee against breakage of

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%

and Class III locations

polycarbonate in normal use (one year on electro
mechanical and electronic components).

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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