SenTech HK-21NZ Installation Instructions Download Page 2

7. INSTALLATIONS
A Sentech heat alarm can be installed in two different ways:

(1) QUICK INSTALLATION WITH 3M DOUBLE-SIDE TAPE

Make sure that the installation surface is even and cleaned thoroughly. If the 
ceiling has an uneven surface or rough in texture, install the heat alarm with the 
screws supplied.

C)  Remove the red cover on the double-sided tape.

D)  Attach the heat alarm by pressing it firmly against 

the ceiling for approximately 60 seconds. You may 
also hear an alarm sound if the test button gets 
pressed during installation.

E)  Make sure that the heat alarm is activated by 

pressing the test button for 3 seconds.  When 
the heat alarm gives an alarm sound, the test is 
complete and your heat alarm is ready for use.

Note: Installation with 3M double-sided tape is not approved according to 
Great Britain’s LPCB standard.

The installation is now complete. Test your heat alarm weekly!

The installation is now complete. Test your heat alarm weekly!

(2) INSTALLATION WITH SCREWS

6. PRODUCT COMPONENTS DRAWING

A)  Activate the heat alarm by pushing the mounting 

plate and turning it clockwise at the same time. 
The heat alarm is activated and ready to be 
installed when you feel clicks. You may also hear 
an alarm sound if the test button gets pressed 
during activation.

A)  Remove the mounting plate of the heat alarm by 

turning it counter-clockwise and lifting it away.

C)  Press the heat alarm against the mounting plate 

and turn it clockwise until you feel clicks.

D)  Make sure that the heat alarm is activated by 

pressing the test button for 3 seconds. When 
the heat alarm gives an alarm sound, the test is 
complete and your heat alarm is ready for use.

B)  To achieve the correct heat alarm position, mark 

drill holes for the screws then screw the mounting 
plate of the heat alarm tightly to the ceiling with 
the screws.

B)  Remove the white cover on the double-sided tape, 

then adhere to the mounting plate.

EN 14604:2005

0832-CPR-F1312

16

1050b/01

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