SilentKnight SK-Heat / SK-Heat-HT / SK-Heat-ROR Addressable Heat Detector User Manual

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This sensor must be installed in compliance with the control panel system
installation manual. The installation must meet the requirements of the Au-
thority Having Jurisdiction (AHJ). Sensors offer maximum performance when
installed in compliance with the National Fire Protection Association (NFPA);
see NFPA 72.

Before installing sensors, please read the system wiring and installation man-
ual thoroughly. This manual provides detailed information on sensor spac-
ing, placement, zoning, and special applications. Copies of these manuals are
available from Silent Knight.
GENERAL DESCRIPTION
Models SK-Heat, SK-Heat-ROR and SK-Heat-HT are intelligent sensors that
utilize a state-of-the-art thermistor sensing circuit for fast response. These
sensors are designed to provide open area protection with 50 foot spacing
capability as approved by UL 521. Model SK-Heat is a fixed temperature sensor
with 135° F fixed temperature alarm. SK-Heat-ROR is a rate-of-rise tempera-
ture sensor with 135° F fixed temperature alarm. Model SK-Heat-HT is a high
temperature sensor with 190° F fixed temperature alarm.

Two LEDs on each sensor light to provide a local, visible sensor indication.
Remote LED annunciator capability is available as an optional accessory (Part
No. RA400Z/RA100Z).
Models SK-Heat, SK-Heat-ROR, and SK-Heat-HT require compatible ad-
dressable communications to function properly. Connect these sensors to
listed-compatible control panels only.
WIRING GUIDE
All wiring must be installed in compliance with the National Electrical Code,
applicable local codes and the Authority Having Jurisdiction. Proper wire
gauges should be used. The installation wires should be color coded to limit
wiring mistakes and ease system troubleshooting. Improper connections will
prevent a system from responding properly in the event of a fire.

Remove power from the communication line before installing sensors.

1. Wire the sensor base (supplied separately) per the wiring diagram,

see Figure 1.

2. Set the desired address on the sensor address switches, see Figure 2.
3. Install the sensor into the sensor base. Push the sensor into the base

while turning it clockwise to secure it in place.

4. After all sensors have been installed, apply power to the control unit and

activate the communication line.

5. Test the sensor(s) as described in the TESTING section of this manual.

SK-400-006

I56-3429-001R

fIGURE 1. WIRING DIAGRAm:

(–)

(+)

LISTED COM

TIBLE

CONTROL

ANEL

CAUTION: DO NOT LOOP WIRE

UNDER TERMINAL 1 OR 2.

BREAK WIRE RUN TO PROVIDE

SUPERVISION OF CONNECTIONS.

CLASS A OPTIONAL WIRING

REMOTE

ANNUNCIATOR

(–)
(+)

C0129-00

fIGURE 2:

TENS

ONES

1 0

C0162-00

TAmPER RESISTANCE
The sensor base includes a tamper proof feature which when activated pre-
vents removal of the sensor without the use of a tool. See the installation
instruction manual for the sensor base for details in using this feature.
TESTING
Before testing, notify the proper authorities that the system is undergoing
maintenance, and will temporarily be out of service. Disable the system to
prevent unwanted alarms.

All sensors must be tested after installation and periodically thereafter. Test-
ing methods must satisfy the Authority Having Jurisdiction (AHJ). Sensors
offer maximum performance when tested and maintained in compliance with
NFPA 72.

I56-3429-00

INSTALLATION AND mAINTENANCE INSTRUCTIONS

SK-Heat, SK-Heat-ROR, and SK-Heat-HT
Intelligent Plug-In Temperature Sensors

SPECIfICATIONS
Diameter:

6.1˝ (155mm) installed in B210LP; 4.1˝ (104mm) installed in B501

Height:

2.0˝ (51mm)

Weight:

4.8 ounces (137 gm)

Installation Temperature:

–4°F to 100°F (–20°C to 38°C), SK-Heat and SK-Heat-ROR; –4°F to 150°F (–20°C to 66°C), SK-Heat-HT

Operating Humidity Range:

10% to 93% Relative Humidity, Non-condensing

Mounting:

B210LP flanged base; B501 flange less base

Voltage Range:

15 to 32 Volts DC Peak

Standby Current:

300 µA @ 24 VDC

LED Current:

6.5 mA @ 24 VDC

Fixed Temperature Rating:

135°F (57°C) SK-Heat and SK-Heat-ROR; 190°F (88°C) SK-Heat-HT

Rate-of-Rise Detection:

Responds to greater than 15°F/minute; SK-Heat-ROR

12 Clintonville Road, Northford, CT 06472

203.484.7161; Fax: 203.484.7118