Linear DXT-72 User Manual

DXT-72

TWIST MOUNTING PLATE TO UNLOCK

REMOVE MOUNTING PLATE

WIRELESS PHOTOELECTRIC SMOKE ALARM

Installation Instructions

(760) 438-7000

Toll Free FAX (800) 468-1340

www.linearcorp.com

DXT-72 FEATURES INSTALL BATTERIES CHOOSE ALARM LOCATION

TRANSMITTER BOARD

USA & Canada (800) 421-1587 & (800) 392-0123

TRANSMIT LED

TRANSMITTER TEST BUTTON

PRODUCT DESCRIPTION

The DXT-72 is a photoelectric smoke alarm with a built-in transmitter designed for use with Linear’s DX Format receivers. When smoke is detected, the alarm sounds a loud local alarm. Twenty seconds after the local alarm sounds, the builtin transmitter sends a digitally coded wireless signal to its companion receiver. The wireless signal will be repeated every 20 seconds as long as smoke is still present.

The digital DX code format features over a million possible codes. The DX transmitters are precoded at the factory to unique codes, so no ﬁ eld coding is required. The DXT-72 can send three different codes: alarm, test and low battery.

For versatility, any transmitter can be programmed into any receiver channel. Receivers must be programmed to the transmitter’s code before system testing and operation. Refer to the receiver’s instructions for details on programming.

The unit is powered by two 9-volt alkaline or lithium batteries. These batteries are supplied with the transmitter and can power the unit for up to two years. If the battery voltage drops below a preset level the alarm will sound low battery beeps and a low battery signal will be sent to the receiver every hour (some receivers can report low battery, others cannot).

☞ NOTE: After replacing batteries, press transmitter test

button to reset “low battery circuit”.

PRESS TRANSMITTER TEST BUTTON AFTER INSTALLING BATTERIES TO PRE-SET LOW BATTERY CIRCUIT

REMOVE MOUNTING PLATE

CONNECT AND INSTALL

BATTERY HOLDING CUPS

TWO 9-VOLT DURACELL ALKALINE MN1604 OR ULTRALIFE LITHIUM U9VL BATTERIES

INSTALL MOUNTING PLATE PROGRAM RECEIVER MOUNT ALARM ON PLATE

REFER TO RECEIVER'S INSTRUCTIONS TO PREPARE RECEIVER TO ACCEPT THE TRANSMITTER'S CODE

PRESS TRANSMITTER TEST BUTTON TO SEND SIGNAL

SCREW ANCHORS FOR WALLBOARD

PLASTIC SINGLE-GANG ELECTRICAL BOX

TWIST SMOKE ALARM CLOCKWISE TO LOCK TO MOUNTING PLATE

MATCH UP ALIGNMENT TABS

TEST SYSTEM STANDARD FOR ALARM LOCATION

PRESS AND HOLD ALARM TEST BUTTON FOR ONE MINUTE

20 SECONDS AFTER SOUNDER STARTS TRANSMITTER WILL SEND SIGNAL

VERIFY THAT RECEIVER ACTIVATES

The purpose of an early warning smoke alarm is to detect the presence of ﬁ re in its early stages, and sound an alarm giving the occupants more time to exit the premise before the smoke reaches a dangerous concentration level.

Fires start even with the best of housekeeping and ﬁ re prevention procedures. Fire is an unexpected event. Early warning detection alerts occupants in time to act.

KNOW FIRE HAZARDS. No detection device can protect life in all situations. Therefore, safeguards should be taken to avoid such potentially dangerous situations as: smoking in bed, leaving children home alone, cleaning with ﬂ ammable liquids such as gasoline.

The best ﬁ re protection is minimizing ﬁ re hazards through proper storage of materials and general good housekeeping techniques. A cluttered basement, attic, or other storage area is an open invitation to ﬁ re.

Careless use of combustible materials and electrical appliances, or overloading of electrical outlets are other prime causes in starting ﬁ res.

It is most important that explosive and/or fast burning materials be eliminated from the home, if at all possible.

Even after proper precautions have been taken, ﬁ res can start.

Be prepared.

EX AMPLE AL ARM LOCATIONS LINEAR LIMITED WARRANTY

DINING

KITCHEN BEDROOM BEDROOM

SMOKE ALARM

LIVING ROOM

A smoke alarm should be located between the sleeping area and the rest of the family living unit.

DINING KITCHEN BEDROOM

ROOM

BEDROOM

SMOKE

ALARMS

In family living units with more than one sleeping area, a smoke alarm should be provided to protect each.

LIVING ROOM

BEDROOM

The DXT-72 should be installed in accordance with National Fire Protection Association (NFPA) Standard 72, which reads as follows:

2-1.1.1 Smoke alarms shall be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms and on each additional story of the family living unit including basements and excluding crawl spaces and unﬁ nished attics. In new construction, a smoke alarm shall be installed in each sleeping room.

2-1.1.2 For family living units with one or more split levels (i.e., adjacent levels with less than one full story separation between levels), a smoke alarm required by 2-1.1.1 shall sufﬁ ce for an adjacent lower level, including basements. (Exception: Where there is an intervening door between one level and the adjacent lower level, a smoke alarm shall be installed on the lower level.)

✔ Ceiling mounted smoke alarms should be located in the

center of the room or hall, or not less than 4 inches from any wall. When the alarm is mounted on a wall, the top of the alarm should be 4 to 12 inches from the ceiling.

✔ Do not install smoke alarms where normal ambient

temperatures are above 100°F (37.8°C), or below 40°F (4°C). Also, do not locate alarm in front of air conditioners, heating registers, or other locations where normal air circulation will keep smoke from entering the detector.

FIRE PREVENTION AND ESCAPE

IN CASE OF FIRE. Leave immediately. Don’t stop to pack or search for valuables. In heavy smoke, hold your breath and stay low - crawl if necessary. The clearest air is usually at the ﬂ oor.

If you have to go through a closed door, carefully feel the door and door knob to see if undue heat is present. If they seem relatively cool, brace your foot against the bottom of the door with your hip against the door and one hand against the top edge. Open it slightly. If a rush of hot air is felt, slam the door quickly and latch it. Unvented ﬁ re tends to build up considerable pressure. Be sure all the household realizes and understands this danger.

Use your neighbor’s phone or a street ﬁ re alarm box. The job

of extinguishing the ﬁ re should be left to the professionals. Too many unforeseen things can occur when inexperienced people try to extinguish a ﬁ re.

LIVING ROOM

BASEMENT

BED

ROOM

RECREATION ROOM

Indicates required smoke alarm Indicates optional smoke alarm if door is not provided between Living and Recreation Rooms

BED

ROOM

LIVING ROOM

A smoke alarm should be locatedoneachstory.

HALL

BED

ROOM

HALL

DINING

ROOM

BASEMENT

BED

ROOM

A-2.5.2.1 Smoke Detection - Are More Smoke Alarms Desirable? The required number of smoke alarms might not provide reliable early warning protection for those areas separated by a door from the areas protected by the required smoke alarms. For this reason, it is recommended that the householder consider the use of additional smoke alarms for those areas for increased protection. The additional areas include the basement, bedrooms, dining room, furnace room, utility room, and hallways not protected by the required smoke alarms. The installation of smoke alarms in kitchens, attics (ﬁ nished or unﬁ nished), or garages is not nor mally recommended, as these locations occasionally experience conditions that can result in improper operation.

Smoke alarms are not to be used with detector guards unless the combination has been evaluated and found suitable for the purpose.

BE PREPARED. Perform ﬁ re drills regularly. Use them to assure recognition of an alarm signal. For your protection, simulate different circumstances (smoke in hall, in living room, etc.). Then have everyone react to the situation.

Draw a ﬂ oor plan and show two exits from each room. Frequently a knotted rope or ladder from a window will serve this purpose. It is important that children be instructed carefully, because they tend to hide in times of crisis.

It is imperative that one meeting place outside the home be established. You should insist that everyone meet there during an alarm. This will eliminate the tragedy of someone re-entering the house for a missing member who is actually safe.

If you have children and/or invalids residing in your household, you can help your ﬁ re department. Most ﬁ re departments have window decals available for use in children’s or invalid’s bedrooms. Properly used, these decals will quickly identify sleeping quarters of these individuals and show the ﬁ re depar tment where to look ﬁ rst for members of your household.

✔ Additional information on Household Fire Warning

is available at nominal cost from: The National Fire Protection Association, Batterymarch Park, Quincy, MA

02269. Request Standard No. NFPA 72.

This Linear product is warranted against defects in material and workmanship for twelve (12) months. The Warranty Expiration Date is labeled on the product. This warranty extends only to wholesale customers who buy direct from Linear or through Linear’s normal distribution channels. Linear does not warrant this product to consumers. Consumers should inquire from their selling dealer as to the nature of the dealer’s warranty, if any. There are no obligations or liabilities on the part of

Linear LLC for consequential damages arising out of or in connection with use or performance of this product or other indirect damages with respect to loss of property, revenue , or proﬁ t, or cost of removal, installation, or reinstallation.

All implied warranties, including implied warranties for merchantability and implied warranties for ﬁ tness, are valid only until Warranty Expiration Date as labeled on the product. This Linear LLC Warranty is in lieu of all other warranties express or

implied.

All products returned for warranty service require a Return Product Authorization Number (RPA#). Contact Linear Technical Services at 1-800-421-1587 for an RPA# and other important details

Linear radio controls provide a reliable communications link and ﬁ ll an important need in portable wireless signaling. However, there are some limitations which must be observed.

✶ For U.S. installations only: The radios are required to comply with FCC Rules

and Regulations as Part 15 devices. As such, they have limited transmitter power and therefore limited range.

✶ A receiver cannot respond to more than one transmitted signal at a time

and may be blocked by radio signals that occur on or near their operating frequencies, regardless of code settings.

✶ Changes or modiﬁ cations to the device may void FCC compliance. ✶ Infrequently used radio links should be tested regularly to protect against

undetected interference or fault.

✶ A general knowledge of radio and its vagaries should be gained prior to acting

as a wholesale distributor or dealer, and these facts should be communicated to the ultimate users.

IMPORTANT!!!