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User manual 

ZT-MSH AC/DC smoke & heat alarm 

 

Approved to EN 14604:2005/AC:2008  

and BS5446-2:200

3

Model

 

CE LPCB 

Interconnection 

Suitable for 

Leisure 

Accommodation 

Vehicles (LAV) 

ZT-MSH 

2

83

1

-CPR-

F2

800

330v

/01 Yes 

Yes 

Cautions 

ELECTRICAL HAZARD:

 Disconnect power from equipment prior to making any 

internal adjustments. Installation and service should only be performed by qualified 
personnel. 

PRODUCT LIMITATIONS

: This smoke & heat alarm does not detect gas, or flame, 

and should not be covered with a guard or similar obstructing item. 

This smoke & heat alarm may not alert people who are hearing impaired. It is strongly 
recommended that the special-purpose smoke & heat alarms using visual or vibrating alerting 
devices, should be installed for these occupants. 
This smoke & heat alarm may not be effective in fires where smoke and heat is prevented 
from reaching the device (eg where intermediate doors are closed), where the fire grows so 
rapidly that the egress path is blocked (even when correctly located), and where the fire is 
intimate to a person (eg where a victim's clothes catch fire). 

SLEEPING OCCUPANTS

: Studies have shown that smoke & heat alarms may not 

awaken all sleeping occupants, and it is the responsibility of individuals in the 

household that are capable of assisting other to provide assistance to those who may be 
awakened by the alarm sound, or to those who may be incapable of safely evacuating the 

area unassisted. 

INSTALLATION LIMITATIONS

 This product is designed for use in a single 

residential unit, such as a family home or apartment. It should only be used in 

lobbies, hallways, basements etc. if interconnected with other compatible smoke or heat 
alarms. Smoke alarms, located outside the dwelling may not provide early warning to 
occupants. 
This product is not designed for use in non-residential buildings. Non-residential buildings 
require special fire detection and alarm systems. This product alone is not a suitable 
substitute for a fire detection system installed in places of work or where people sleep on a 
temporary basis, such as hotels or motels, dormitories, hospitals, nursing homes or group 
homes of any kind, even if they were once dwellings. Please refer to local regulations for fire 
detection and alarm system requirements.  

Features 

ZT-MSH AC/DC smoke & heat alarms provide smoke/heat detection and 
alarm functions within a single unit. Advanced electronics in conjunction with 
a photoelectric smoke sensing chamber and an electronic thermistor provide 
early detection of smoke and high immunity against unwanted alarms. The 
heat sensor provides sensitive rate-of-rise operation or fixed-temperature 
operation when the response threshold value is exceeded. 
ZT-MSH AC/DC smoke & heat alarms are mains powered, with battery backup, 
suitable for general residential applications. ZT-MSH AC/DC smoke & heat 
alarms is suitable for general application in residential area and also for 
detection of fire without smoke (e.g. ethanol fire). It provides home owners and 
installers with an easy-to-install, premium solution for life safety and property 
protection applications. 

Audible and Visual Alarm Indicators 

When operating normally, a green LED in the Test button illuminate. When 
smoke/heat is detected, an internal sounder will activate to alert occupants, 
and a red LED will flash rapidly. The sounder is a loud, pulsating alarm. 
Whenever alarm indication is given, it shall be assumed that is an actual fire. 

Test Button 

Pressing and holding the Test button for 3 s will activate the smoke & heat 
alarm to check its operation. The alarm will sound and the red LED will flash 
rapidly. Releasing the test button will return the unit to normal operation. 

Low Battery 

When the battery is depleted, the smoke & heat alarm will emit a short audible 
signal every 48 s for at least 30 days, while the red LED flashes simultaneously. 
When the Low Battery signal is given, change the battery without delay. 

Fault 

When the smoke chamber is degraded or contaminated over a limit or the 
thermistor is damaged, the smoke & heat alarm will emit two short audible 
signals every 48 s, while the red LED not flashes simultaneously. When the fault 
is given, try vacuum the product on the outer surface, especially the smoke inlet, 
to remove dirt. If the condition persists, return the product for service. 

Hush Button 

Pressing the Hush button will reduce the sensitivity of the smoke & heat alarm 
for approximately 10 min. The Hush button should only be used after the cause 
of the alarm is known (such as normal cooking fumes). The Hush feature 
allows time for the smoke/heat to clear. During the hush time, the red LED will 
flash once every 6 s. After the Hush time has expired, the smoke & heat alarm 
will return to normal sensitivity. If smoke/heat is still present in the unit, the 
alarm will re-activate. The Hush feature can be used repeatedly. 
Under hush mode, press the hush button again will return the unit to normal 
operation. 

Alarm Memory 

Alarm Memory feature allows easy identification of any unit that has previously 
been in the Alarm condition. If a unit enters the Alarm condition and 
subsequently returns to the Normal condition, the Alarm Memory is set. Initially, 
the red LED will flash three times every 48 s. In order to preserve battery 
power, this visual indication will stop after 24 hours and the unit will return to 
normal operation. 
If the Alarm Memory is active, pressing and releasing the Test/Hush button 
resets the Alarm Memory with 3 short beeps. 

Interconnection Terminals 

Interconnected smoke & heat alarms will activate sounders on all units if any 
smoke & heat alarm detects smoke/heat. In this case, only the smoke & heat 
alarm(s) that detected smoke/heat will flash the red LED indicator. This allows 
the home owner to quickly locate the cause of the alarm. Up to 24 units can be 
interconnected as long as the cabling is less than 250 m in length.  

Specifications

 

Main power source 

AC 220 V ~ AC 240 V, 50 Hz 

Standby power source 

DC 9 V battery 

Operating temperature 

°

C ~ +45 

°

Operating humidity 

10 % ~ 90 % RH, non-condensing 

Alarm sounder output 

 85 dB @ 3 m 

Interconnection (max) 

24 units, 250 m cabling 

Approvals

 

ZT-MSH AC/DC smoke & heat alarms have the following approvals. 

EN 14604:2005/AC:2008

Smoke alarm devices 

BS5446-2:200

8

Fire detection and fire alarm devices for dwellings – Part 2: 

Specification for heat alarms 

CE 

2

83

1

-CPR-F

2800

 

Installation Preparation

 

Equipment 

Before commencing installation, ensure all equipment and tools to mount and 
test the device are available, such as drills, mounting screws (supplied), cables 
and ladders. 

Location Selection in Homes and Apartments 

WARNING

: Location and number of smoke and heat alarms may be 

specified in relevant regulations. Where these do not exist, the 

requirements for smoke alarm installation of NFPA 72 can be used. For your 
information, the National Fire Alarm Code, NFPA, reads as follows. 

11.5.1 *Required Detection. 
*Where required by applicable laws, codes, or standards for a specific type of occupancy, 
approved single- and multiple-station smoke alarms shall be installed as follows: 
(1) *In all sleeping rooms and guest rooms 
(2) *Outside of each separate dwelling unit sleeping area, within 6.4 m (21 ft.) of any door 
to a sleeping room, the distance measured along a path of travel 
(3) On every level of a dwelling unit, including basements 
(4) On every level of a residential board and care occupancy (small facility), including 
basements and excluding crawl spaces and unfinished attics 
(5) *In the living area(s) of a guest suite 
(6) In the living area(s) of a residential board and care occupancy 

For complete coverage, smoke alarms should be installed in all rooms, halls, 
storage areas, basements, and attics in the dwelling. The minimum coverage 
is one smoke alarm on each floor and one outside each sleeping area. Please 
use the following location guide. 

Single Storey Dwellings 

Install a smoke alarm in the hallway outside every separate bedroom area, as 
shown in Fig. 1 a). Two smoke alarms should be installed in dwellings with two 
bedroom areas, as shown in Fig. 1 b). 

 

GLT

-

317

-

DoP-2                                                                                                                         

330v

/01

1

9

 

2831

Summary of Contents for ZT-MSH

Page 1: ...n the smoke chamber is degraded or contaminated over a limit or the thermistor is damaged the smoke heat alarm will emit two short audible signals every 48 s while the red LED not flashes simultaneously When the fault is given try vacuum the product on the outer surface especially the smoke inlet to remove dirt If the condition persists return the product for service Hush Button Pressing the Hush ...

Page 2: ...ture range for your smoke heat alarm is 0 C 45 C In very dusty or dirty areas Dirt and dust can build up on the smoke heat alarm s sensing chamber to make it overly sensitive Additionally dust or dirt can block openings to the sensing chamber and limit the smoke heat alarm from sensing smoke Near fresh air vents or high draft areas like air conditioners heaters or fans fresh air vents and drafts w...

Page 3: ...loud pulsating sound on all interconnected smoke heat alarms and the red LED in the Test button operates only on the smoke heat alarm being tested Repeat the test on all interconnected smoke heat alarms The alarm shall also be tested when back from a long away vacation from the house WARNING Never use a naked flame of any kind to test your smoke heat alarm You may set fire to and damage the smoke ...

Page 4: ...during the five year period commencing from the date of purchase During the initial one year period commencing from the date of purchase such repair or replacement shall be made without charge During the latter four years of the Warranty period such repair or replacement shall be made at a charge to the Customer not to exceed the manufacturer s cost Units in need of repair should be returned shipp...

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