STI 1229HTR240 User Manual

Stopper Dome

Heated Enclosure

STI-1229HTR / STI-1229HTR240

Features:

· Maintains operating strobe appliance temperature with external temperatures to ­70°F (-57°C). Independently tested to -102°F (-73°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.

· Can be used for UL 1638 Strobes for colored lens (see Amseco’s spec sheet).

Operation:

For use in areas where temperature or environmental conditions exceed the
operational range of fire strobe signaling devices. Unit requires 24 VDC continuous
for fan operation and 110 or 240 VAC operation 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 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, NFPA 72, 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.

2

Performance Review

Manufacturer

SYSTEM SENSOR (P2, PC2, P4, PC4, SX, SC)
WHEELOCK (RSS 24MCW)
ADT SECURITY (ADTG1-V Series), EST/EDWARDS (G1-V, G1-HV, G1-HOV, EG1-V, EG1-HV,
EG1-HOV Series), HONEYWELL (XLSG1-V, XLSG1-HV Series), MIRCOM (MG1-V, MG1-HV,
MG1-HOV, Series), MIRTONE (MG1-V Series), SIEMENS (G1-V Series)
FARADAY LLC (2700), SIEMENS (U-MCS Series)
EST/EDWARDS (2440S, 202 Series), HONEYWELL (XLS202 Series), MIRCOM(MS

Series), SIEMENS (202), ZITON PTY LTD (ZG1-V Series)
SYSTEM SENSOR (SS24110ADA)
AMSECO (SL24W-153075), AMSECO - COLORED LENSES (SL24W-153075 A, B, G or R,

SL24C-3075110 A B, G or R, CSL24W-A, B, G or R, CSL24C-A, B, G or R), HONEYWELL
(XLSG1-HOV Series), MIRCOM (FS-240), POTTER ELECTRIC (AS-24-153075R, AS-24­153075W)

Note: Can be used for UL 1638 Strobes for colored lens (see Amseco’s spec sheet).

Light

Loss %

28%
31%
32%

33%
34%

36%
37%

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: Cover: UL94 V-2

Backbox: UL94 5VA
Wall Thickness: 0.2 in (5.1mm)
NEMA Rating: 4X, indoor and outdoor use
Warranty: Three year guarantee against breakage of polycarbonate in

Silicone Laminate Heater:

STI-1229HTR 110 VAC 50/60 Hz UL Recognized Component
STI-1229HTR240 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%

normal use

(one year on electro mechanical and electronic components).

-70˚F (-57˚C) 71%

Fan:

24 VDC (±10%), 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

3

STI-1229HTR Installation Instructions

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HEATER ASSEMBLY

HEATER

OVERTEMP SAFETY
THERMOSTAT

HIGH VOLTAGE
TERMINAL BLOCK

PIN 6
PIN 5

PIN 4

2 A FUSE

CONTROL THERMOSTAT

1

2

3

4

5

6

1

2

MOUNT BACKBOX TO WALL (Refer to Fig. 1)

1. Remove appliance heater assembly from back box and set aside.

2. Mount back box in desired location (wall mount only) using the four #10

x 1-1/2” screws and anchors (provided). Drill a 1/4” diameter pilot hole
for plastic anchors at spacing in Fig. 1.

3. Attach conduit hub to a 3/4” NPT nipple and conduit seal fitting to the back

box, top and bottom.

FIGURE 1

Note: A conduit seal fitting must be used on both top and bottom
conduit entries as close to the unit as possible. Use conduit seal Crouse­Hinds 3/4” EYSX 21 or equivalent. Conduit should be installed according
to applicable NEC and local codes.

4. Pull wiring into back box.

Note: High Voltage (110 or 240 VAC) wiring must enter thru bottom
conduit and low voltage and
signaling wires must enter thru
top conduit and remain separated
per NFPA 70, NEC, and local codes.

HIGH VOLTAGE WIRING (Refer to Fig. 2)

5. Connect high voltage:

110 or 240 VAC power is “OFF”.
Refer to high voltage schematic
diagram on page 6.

Pin 6 AC HOT L-1
Pin 5 Neutral L-2
Pin 4 Ground Ground

110 VAC 240 VAC

Make sure

FIGURE 2

4

HEATER ASSEMBLY

FAN

LOW VOLTAGE

TERMINAL BLOCK

LOW TEMP

WARNIN G

FAN POWER

STROBE

POWER

LOW TEMP WARNING

THERMOSTAT

STROBE

(NOT PROVIDED)

STROBE HOOK-UP
WIRE

HEATER ASSEMBLY
MOUNTING SCREW

STROBE MOUNTING BOSS

1

2

3

4

5

6

-

+

+

-

1

2

WARNING LABEL

LOW VOLTAGE WIRING (Refer to Fig. 3 & Schematic drawings on Page 6)

6. Connect Supervisory Module Connect EOL device (not included) between

pins 1 and 2 of low voltage terminal block. Pins 1 and 2 should then be
connected to the fire alarm supervisory control module.

Note: Fire alarm supervisory control module must be of the latching type only.

Pin 1 Alarm Supervisory
Pin 2 Control Module

7. Connect Fan Power

Note: Fan will not operate if polarity is reversed. Refer to low voltage

schematic on page 6.
Pin 3 -24 VDC

EOL
DEVICE

Pin 4 +24 VDC

8. Connect strobe appliance power

Pin 5 - 16-33 VDC
Pin 6 +16-33 VDC

9. Attach heater assembly to back box using (4) #8-32 x 3/8” flat head

screws into heater assembly mounting bosses on back box (see Fig. 1).
Make sure all service wiring is gathered away from the heater and be
careful not to pinch wire under heater assembly. Fan must be mounted
toward top of
enclosure.

10. Wire strobe using

Teflon coated wire
provided. (White­P o s i t i v e / B l a c k­Negative) and
attach to the strobe
mounting bosses
on heater assembly.

11. Record installation

date on label and in
manual (page 2).

12. Install cover and

gasket with (6) #8­32 x 3/4” socket
cap screws and (6) flat washers as shown in Fig. 4.

13. Turn all power to “ON” position.

FIGURE 3

Note: Fan runs continuously. This system requires three sources of power:

1. 110 or 240 VAC heater on the load side of the fuse holder.

2. 24 VDC power source for the circulating fan. Check fan to see if
operating; if not check polarity and reverse then try again

3. 16-33 VDC fire alarm notification circuit for strobes and temperature
warning monitor.

5

Schematic Diagrams

2

AMP FUSE

OVERTEMP SAFETY

1

2

4

3

5

6

CONTROL

110 OR 240 VAC

SINGLE PHASE

4

5

3

6

1

2

STROBE

PWR

FAN

PWR

TEMP

WARNING

SUPERVISOR

_

+

+

_

FAN

LOW TEMP WARNING

STROBE (16-33VDC 600mA)

S

LOW VOLTAGE CIRCUIT

HIGH VOLTAGE CIRCUIT

TERMINAL

BLOCK

TERMINAL

BLOCK

CHASSIS

HEATER

EOL DEVICE

SUPPLIED BY

CUSTOMER

OPEN @ 70˚F

CLOSE @ 50˚F

OPEN @ 120˚F
CLOSE @ 80˚F

OPEN @ 50

˚

F

CLOSE @ 32˚F

(24VDC 90mA)

110 OR 240 VAC 50/60 Hz
100 WATTS

6

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PRODUCT DIMENSIONS

2

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Product Assembly

7

Warranty

Three year guarantee against breakage of polycarbonate in normal use
(one year on electro mechanical and electronic components).

Electronic warranty form at www.sti-usa.com/wc14.

2306 Airport Road

Waterford, Michigan 48327-1209

Phone: [phone] • Toll Free: 800-888-4784 • Fax: [phone]

sti-usa.com

www.

Safety Technology International (Europe) Ltd.

Unit 49G Pipers Road • Park Farm Industrial Estate • Redditch

Worcestershire • B98 0HU • England • Tel: [phone]

Fax: [phone] • Freephone: 0800 085 1678 (UK only)

E-mail: [e-mail] • Web: www.sti-europe.com

Printed in USA SUBJECT TO CHANGE WITHOUT NOTICE Inst. Sht. 1229HTR IS OCTOBER2006