TM0098
Page 1 of 4
Issue 1.00
HOT WIRE TEST BOX
USER GUIDE
TM0098
WARNING
Please read this guide fully before attempting to operate the unit.
1.0 Introduction
This Guide describes the use of the Kidde Fire Protection Hot Wire Test Box (part number 1-53836-
K237) to test aspirating smoke detection systems. The unit provides 6V AC output from 220-240V AC
mains supply. High current at low voltage is passed through a cable in order to heat it, which causes
its insulation to burn giving off smoke. A timer is incorporated to provide a selectable burn period of
up to 3 minutes. The timer also helps to prevent the unit being inadvertently left on for an extended
period. The unit
must never
be left on unattended.
The unit must be operated for
no more than three (3) minutes
continuously and must be left off
immediately after operating for a
period of at least six (6) minutes to allow it to cool.
The unit is protected against over-temperatures by a thermal switch. Once tripped, the thermal switch
will not allow operation for an extended period (up to an hour) regardless of power being present or
not. The thermal switch cannot be by-passed or reset manually.
