Carnes EXSAF Installation Manual

1

FORM 40022

INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS

HS-100 Series Smoke Detectors, Model EXSAE and EXSAF (Ionization),

EXSAL and EXSAM (Photoelectric)

CAUTION! DO NOT INSTALL, USE OR OPERATE THIS EQUIPMENT UNTIL THIS

MANUAL HAS BEEN READ AND UNDERSTOOD. READ AND SAVE THESE INSTRUCTIONS FOR FUTURE USE.

CARNES COMPANY 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: [phone] Fax: [phone] www.carnes.com

PRODUCT APPLICATION

HS-100 Series duct smoke detectors provide early detection of
smoke and products of combustion present in air moving through
an HVAC duct supply, return, or both in commercial, industrial, and
residential applications. These devices are designed to prevent the
recirculation of smoke in areas by the air handling system’s fans
and blowers. Complete systems may be shut down in the event of
smoke detection.

The HS-100 is designed specifically for applications where our
standard external mount duct detectors cannot be utilized.
Examples include air shafts, plenum spaces or applications
requiring extremely low or no air velocity <

100 ft./min.

NOTE

: For the correct installation of a duct smoke unit,

please refer to the NFPA 72 (National Fire Alarm Code), NFPA
90A (Standard for Installation of Air Conditioning and Ventilation
Systems),NFPA 92A (Recommended Practice for Smoke Control
Systems), NFPA 5000 (Building Construction and Safety Code),
IMC (International Mechanical Code), and IFC (International Fire
Code).

This detector is not intended for open area protection nor should
it be used for early warning detection or replace a regular fire
detection system.

PRODUCT DESCRIPTION

The HS-100 Series smoke detector is fitted with a mounting base
that will accept an ionization smoke detector head model 55000­225 or photoelectric smoke detector head model 55000-328. The
duct unit supports one set of form “C” alarm contacts, one form “A”
alarm contact and one form “C” trouble contact. The trouble
contact supervises the presence of the input power and the
removal of the smoke detector head.

The trouble contacts will not

operate in the event of a smoke
alarm. The HS-100 Series duct detector will operate from various
input voltage sources; namely 24VAC, 24VDC, 115VAC and
230VAC.

SAMPLING

The operating principle of this duct detector is based on air flowing
through the duct and passing over the detector head. When the
concentration of smoke particles suspended in the air stream
reach the alarm threshold of the detector head, the unit will go into
alarm.

The duct smoke detector units are designed to operate in spaces
with an air velocity between 0 to 3,000 feet per minute. To verify
correct installation, the air velocity should be measured using a
velocity meter. An acceptable reading is between 0 and 2,000
ft/min for the HS-100-N; between 0 and 3,000 ft/min for the
HS-100-P.

PRODUCT OVERVIEW

To minimize the impact of air turbulence and stratification on
performance, a duct smoke detector should be located as far as
possible downstream from any obstruction (i.e. deflector plates,
elbows, etc.). In all situations, confirmation of velocity is required.

REMOTE ACCESSORIES

Audible and visual alarm indicators, remote status indicators, and
remote reset/test switches can be accommodated by the HS-100
Series duct units by connecting to DC voltage output terminals as
described on Page 3. These terminals are not supervised and the
voltage/current will only be present when the detector unit is in
alarm. The remote pilot (green) LED will be permanently illuminat­ed when connected to the output terminals as long as input power
and detector head are present.

HS-100 AT-A-GLANCE

MODEL NUMBER:

HS-100-N 4-Wire Ionization Duct Smoke Detector
HS-100-P 4-Wire Photoelectric Duct Smoke Detector

DETECTOR HEAD MODEL NUMBER:

Ionization Detector Head: 55000-225
Photoelectric Detector Head: 55000-328

POWER REQUIREMENTS:

60 Hz

STANDBY CURRENT ALARM CURRENT

24VAC 54.4 mA 24VAC 139 mA
24VDC 15.0 mA 24VDC 48 mA
115VAC 31.0 mA 115VAC 34 mA
230VAC 18.0 mA 230VAC 20 mA

RELAY CONTACT RATINGS:

Alarm contacts: 1 Set form “C” rated at 10A @ 115VAC resistive

1 form “A” rated at 2A
Trouble contacts: 1 form “B” rated at 10A @ 115VAC resistive
Air velocity: 0 to 3,000ft./min.
Ambient temperature: HS-100-N: 32°F to 158°F (0°C to 70°C)

HS-100-P: 32°F to 140°F (0°C to 60°C)
Humidity: 0% to 85% RH Non-Condensing/Non-Freezing
Material: White plastic base/housing and detector

(Makrolon 94V-0)
Dimensions: 6” Dia. x 4” H Overall/2.6” H from back box front
Max. net wt.: 1.0 lbs.
Radioactive element: HS-100-N (Ionization) - Americium 241,

0.9 micro curie.

Mounting: Standard 4” square back box (by others)

Do not expose to corrosive atmospheres.

2

LOCATION PREREQUISITES

This guideline contains general information on duct smoke
detector installation, but does not preclude the NFPA and/or
ICC documents listed. Air Products and Controls assumes no
responsibility for improperly installed duct detectors. To determine
the correct installation position for an SL-2000 Series duct smoke
detector, the following factors must be considered.

1) A uniform non-turbulent (laminar) air flow between 0
ft/min. to 3,000 ft/min. must be present in the HVAC duct. To
determine duct velocities, examine the engineering specifica­tions that define the expected velocities or use an Alnor model
6000AP velocity meter (or equivalent).

2) To minimize the impact of air turbulence and stratification on
performance, a duct smoke detector should be located as far as
possible downstream from any obstruction (i.e. deflector plates,
elbows, etc.). In all situations, confirmation of velocity within
specifications is required.

3) Identify a code compliant location (supply or return side, or
both) for the installation of the duct unit that will permit easy
access for viewing and serviceability.

4) When installing on the return side, install duct units prior to the
air being exhausted from the building or diluted with outside
“fresh” air.

5) When installing duct smoke units downstream of filters, fires
occurring in the filters will be detected, but if the filters become
blocked, insufficient air flow through the duct unit will prevent
the correct operation of the duct detector. Duct units installed in
the supply air side may monitor upstream equipment and/or
filters.

6) Where possible, install duct detectors upstream of air
humidifiers and downstream of dehumidifiers.

7) To prevent false alarms, the duct detector should not be
mounted in areas of extreme high or low temperatures, in areas
where high humidity exists, or in areas where the duct may
contain gases or excessive dust.

MOUNTING

Remove the detector from its twist-in base. Remove the two
mounting base plate-to-shroud screws. After securing the
mounting base plate to the 4" square back box, wire the mounting
base plate as appropriate. Re-assemble the shroud/detector base
to the mounting base plate. Re-install the detector head. Proceed
to testing.

MECHANICAL INSTALLATION

Air Flow Direction

Testing/Maintenance

Access Plate

4” Square
back box,
conduit and
hardware
by others

HS-100

Note: Mounting shown is typical for an installation conduit pendant mounted on a standard 4” square electrical box.