Carnes EXSAC User Manual

Imperial [IP] Dimensions

Metric (SI) in Parentheses

SPECIFICATION SHEET

Smoke Detectors — SM-501 Series

Model EXSAC and EXSAD (Ionization),

EXSAJ and EXSAK (Photoelectric)

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

COPYRIGHT © 2009 CARNES COMPANY

ALL RIGHTS RESERVED

40018, pg 1

PRODUCT APPLICATION

The SM-501 Series Smoke Duct Detector provides early detection of
smoke and products of combustion present in air moving through
HVAC ducts in Commercial, Industrial and Residential applications.
The unit is designed to prevent the re-circulation or spread of smoke
by air handling systems, fans and blowers. Complete systems may be
shut down in the event of smoke detection.

The SM-501 model will operate on any one of four input voltages
(230VAC, 115VAC, 24VAC or 24VDC). The SM-501 allows up to 30
detectors to be interconnected for many common functions.

PRODUCT DESCRIPTION

Continuing our history of building innovative and reliable products, the
SM-501 is housed in our popular traditional compact housing. The unit
provides two sets of 10 Amp for “C” alarm contacts, along with one set
of 10 Amps form “C” trouble contacts for monitoring head removal and
supply voltage failure.

The green pilot and red alarm visual indicators provided on the front of
the SM-501 signal the operating status of the device. The green pilot
LED will be extinguished when the detector head is removed or power
is lost. A manual test/reset switch is located next to the visual indicators.

The SM-501 has been specially designed to allow linkage of common detector functions for up to 30 detectors.
The units may be wired to use a common test/reset function, and to alarm when a single unit alarms. Also, up to
15 units with signaling devices may be interconnected to operate with a single alarm.

The SM-501 is designed and built to meet all local code requirements, as well as the NFPA and ICC standards
regarding HVAC supply and return duct smoke detectors. Output terminals are provided for remote accessories
such as horns, strobes, remote status indicators and test/reset key switches or push buttons.

The SM-501 is available with either ionization or photoelectric detector heads, which are interchangeable. Air
sampling is accomplished via two rear loading tubes which protrude into the duct. An exhaust tube of one standard
length (7.0”) is supplied in the installation kit with the duct smoke unit. Once the duct width has been determined,
the air intake sampling tube must be ordered. Sampling tubes are supplied in standard lengths (1.0’, 2.5’, 5.0’ and

10.0’), and are cut to size to fit the duct. Mounting the duct smoke detector is accomplished by the use of a
template and four sheet metal screws, as provided. Mounting can be achieved without the removal of the clear
cover, which is secured by four captive screws.

FEA

TURES

• Operating voltages: 230VAC, 115VAC, 24VAC, 24VDC

• Both models listed for high temperature applications

• Interconnect up to 30 units for common functions

• UL, CUL, CSFM and MEA Listed

• Compact size

• Two sets of 10A form “C” alarm contacts

• One set of 10A form “C” trouble contacts

• Rugged steel backbox with clear cover

• Compatible with the WP-I weatherproof enclosure

• Easy retro-fit/upgrade of existing RW Series detectors

• Clear cover fitted with 4 captive screws

• Large terminal connection screws

• Interchangeable “plug-in” photoelectric or ionization heads

• Easy mounting without cover removal

• Advanced detector head design yields internal dust filtering
with no additional screens or filters to clean

• Over 15 remote accessories available

CSFM LISTED

MEA ACCEPTED

40018, pg 2

WIRING

ENGINEERS & ARCHITECTS SPECIFICATIONS

• Carnes smoke detectors shall be listed by Underwriters Laboratories per UL 268A.

• The detectors shall operate at air velocities from 500 feet per minute to 4,000 feet per minute and at temperatures of no greater than 140°F (60°C).

• The duct detector housings shall be of metal construction and complete mechanical installation may be performed without removal of detector cover.

• Visual indication of alarm and power must be provided on the detector front.

• A manual reset switch shall be located on front of the device.

• Detector head shall not require additional filters or screens which must be maintained.

• The housing shall contain a detector base which will accept photoelectric or ionization detector heads.

• Terminal connections shall be of the screw type and be a minimum of #6 screw (#12 to #22 AWG compatible). Terminals shall be provided for remote pilot, remote alarm indications, strobe/horn and
remote test/reset switch. All wiring must comply with local codes and regulations.

• Capability for interconnection of up to 30 units shall be provided for common functions.

PRODUCT SPECIFICA

TIONS

MODEL NUMBER: SM-501-N Ionization: 230VAC, 115VAC, 24VAC, 24VDC

SM-501-P Photoelectric: 230VAC, 115VAC, 24VAC, 24VDC

DETECTOR HEAD MODEL NUMBER: SM-501-N 55000-250APO or 55000-225APO

SM-501-P 55000-350APO or 55000-328APO

SAMPLING TUBES: STS-1.0 Sampling tube for 12” or less duct width

STS-2.5 Sampling tube for 6” to 2.5’ duct width
STS-5.0 Sampling tube for 2.5’ to 5.0’ duct width
STS-10.0 Sampling tube for 5.0’ to 10.0’ duct width

ACCESSORIES: MS-Series remote accessories, WP-1 weatherproof

enclosure, TG-2000 aerosol test gas and T-PB power supplies

POWER REQUIREMENTS: (without accessories) 230VAC 12.0 mA

Standby: 115VAC 25.0 mA

24VAC 35.0 mA
24VDC 15.0 mA

Alarm: 230VAC 16.0 mA

115VAC 32.0 mA
24VAC 74.0 mA
24VDC 56.0 mA

RELAY CONTACT RATING:

Alarm Contacts: Resistive load: 2 sets form “C” rated at 10 Amps @ 115VAC

Trouble Contacts: Resistive load: 1 set form “C” rated at 10 Amps @ 115VAC
AIR VELOCITY: 500 to 4,000 ft./min.
AMBIENT TEMPERATURE: SM-501-N 32°F to 158°F (0°C to 70°C)

SM-501-P 32°F to 140°F (0°C to 60°C)
HUMIDITY: 10% to 85% RH (@32°C) Non-Condensing / Non-Freezing
WIRING: Solid or stranded: #12 to #22 AWG terminals
APPROVALS: UL & CUL Listed (UL268A, UROX, UROX7) File # S2829

CSFM Listed (3240-1004:108)

MEA Accepted (73-92-E; VOL. 26)
MATERIAL: 18 ga. steel backbox, clear plastic cover (Makrolon 94V-0)
FINISH: Grey paint
DIMENSIONS: 9-1/8” L x 7-1/4” W x 2-1/4” H
MAX. NET WEIGHT: 3-1/2 lbs.
RADIOACTIVE ELEMENTS: For SM-501-N (Ionization) Americium 241; 0.9 Micro-Curie

Do not expose to corrosive atmospheres
HARDWARE: 7” exhaust tube, sampling tube end cap, mounting template

and mounting hardware included