HEAT SENSOR TESTING
The detector to be tested should be subject to a flow of
warm air at a temperature of between 65
°
C and 80
°
C.
(This requirement can be met by some domestic hair
dryers).
Proceed as follows:
1. Switch on the warm airflow and check that temperature
is correct and stable.
2. From a distance of several inches, direct the airflow at
the guard protecting the thermistor. The detector
should alarm within 30 seconds.
3. Upon alarm immediately remove the heat source and
check that the red LED of the detector is illuminated.
Reset the detector from the control panel.
4.If detector fails to go into alarm mode within 30
seconds it is too insensitive and needs to be returned
to the distributor for servicing.
5. After testing, check that the system is set for normal
operation and notify the appropriate authorities that the
testing operation is complete and the system is active
again.
NOT SUITABLE FOR INSTALLATION IN AREAS
WHERE AIR VELOCITIES EXCEED 300 ft/min
MAINTENANCE
The recommended minimum requirement for detector
maintenance consists of an annual cleaning of dust from
the detector head by using a vacuum cleaner cleaning
program should be agreed to the individual environment
in conformance with NFPA-72A standard.
CAUTION: DO NOT ATTEMPT TO DISASSEMBLY OF THE
FACTORY SEALED SMOKE DETECTOR. THIS
ASSEMBLY IS SEALED FOR YOUR PROTECTION AND IS
NOT INTENDED TO BE OPENED FOR SERVICING BY
USERS. OPENING THE DETECTOR HEAD WILL VOID
THE WARRANTY.
REFERENCE TO THE TECHNICAL BULLETIN ISSUE NO.
NBTB20031106,REV.A
SPECIFICATION
Model 2/4
wire
Ther
mal
Voltage
DC
Standby
Current
(Max.)
Alarm
Current
(Max.)
Surge
Current
(Max.)
Star-Up
Time
(Max.)
Permissible
Current
(Max.)
Frequency
Alarm
Sound level
Alarm contact
Base model
NB338-2 2
28/12V
90
μ
A
70mA
120
μ
A
60 Seconds
80mA
3-5 Seconds
-
P/N772912
NB338-2L
2
28/12V
90
μ
A
70mA
120
μ
A
60 Seconds
80mA
3-5 Seconds
-
P/N774912
NB338-4-12 4
12V
320
μ
A
35mA
120
μ
A
60 Seconds
80mA
3-5 Seconds
-
Form A
P/N774912
NB338-4-24 4
24V
320
μ
A
35mA
120
μ
A
60 Seconds
80mA
3-5 Seconds
-
Form A
P/N774912
NB338-2H 2
57
°
C 28/12V 100
μ
A
70mA
130
μ
A
60 Seconds
80mA
3-5 Seconds
-
P/N772912
NB338-2HL
2
57
°
C 28/12V 100
μ
A
70mA
130
μ
A
60 Seconds
80mA
3-5 Seconds
-
P/N774912
NB338-4H-12
4
57
°
C 12V 320
μ
A
35mA
130
μ
A
60 Seconds
80mA
3-5 Seconds
-
Form A
P/N774912
NB338-4H-24
4
57
°
C 24V 320
μ
A
35mA
130
μ
A
60 Seconds
80mA
3-5 Seconds
-
Form A
P/N774912
Remarks:
H
-heat/
L
-remote LED indicator output
LIMITED WARRANTY STATEMENT
WIZMART TECHNOLOGY, Inc. represents that this product is free from defects in material and workmanship. And it will
repair or replace any product or part thereof which proves to be defective in workmanship or material for a period of twelve
(12) months from the date of purchase but not to exceed eighteen (18) months after shipment by the manufacturer. For a full
description of WIZMART TECHNOLOGY
’
S LIMITED WARRANTY, which, among other things, limits the duration of
warranties of merchantability and fitness for a particular purpose and excludes liability for consequential damages. Please
read the entire LIMITED WARRANTY on the WIZMART quotation. Acceptance of order and/or original invoice which will
become part of your sales agreement. Please contact WIZMART TECHNOLOGY directly for a return merchandise
authorization (RMA) number before returning goods to the factory. Shipment must be prepaid and WIZMART will repair or
replace your returned detector.
