STI 1229HTR-HAZ - Manual (Page 2)

2
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.