Altronic DD-40NTV-O - CAUTIONS ON SENSOR WIRING AND TESTING; Sensor Wiring Precautions; Sensor Compatibility and Testing Warnings; 4.0 ANNUNCIATOR CONFIGURATION

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DD-40NTV DIGITAL ANNUNCIATOR
4.0 ANNUNCIATOR CONFIGURATION
4.1 The DD-40NTV series unit MUST be congured prior to use. If re-
placing an older series DD series annunciator, modes 1 and 4 can
be used to directly emulate the older system’s performance. Mode
1 duplicates the operation of the DD-40 series and mode 4 dupli-
cates the DD-20 series units. To congure the unit, press the MENU
key to reach the conguration headings from the normal display
mode. After a selection has been made, press the ENTER key to save
the selection. Press MENU to move to the next step. A flowchart
(REFER TO FIG. 6A or 6B) is provided that shows step-by-step pro-
gression through the annunciator conguration procedure.
CAUTION:
A. SENSOR WIRING: SENSOR WIRES WITHIN THE PANEL ENCLOSURE
MUST BE KEPT AT LEAST TWO (2) INCHES FROM OTHER WIRING. USE A
SEPARATE JUNCTION BOX FOR IGNITION AND FUEL VALVE WIRES. RUN
SENSOR LEADS LEAVING THE PANEL IN A CONDUIT SEPARATE FROM ALL
OTHER WIRING AND KEEP SEPARATE THROUGHOUT THE INSTALLATION.
WIRING TO THE SENSORS MUST HAVE A GRADE OF INSULATION CAPABLE
OF WITHSTANDING AN AC VOLTAGE OF 500 V. RMS. SENSOR LEADS MAY
BE CONNECTED TO ANY PASSIVE DEVICE USING CONTACTS SUCH AS
STANDARD SWITCH GAUGES OR LEVEL SWITCHES. DO NOT CONNECT
SENSOR LEADS TO RELAY CONTACTS OR TO ANY VOLTAGE PRODUCING
ELEMENT.
B. SENSORS WILL BE EXPOSED TO MUCH LOWER VOLTAGES AND CURRENT
THAN WITH THE STANDARD MURPHY TATTLETALE OR SIMILAR TYPE
SYSTEM. IN THE CASE OF A FIELD CONVERSION WHERE SENSORS HAVE
PREVIOUSLY BEEN USED WITH MURPHY TATTLETALES, IT IS RECOM-
MENDED THAT THE SENSORS BE CHECKED FREQUENTLY WHEN THE DD
SYSTEM IS FIRST PUT INTO USE. SENSOR CONTACTS MAY BE BURNED
OR PITTED FROM PAST EXPOSURE TO IGNITION SYSTEM PRIMARY VOLT-
AGE. IT IS ADVISABLE TO REPLACE SUCH SENSORS.
C. IF IT BECOMES NECESSARY TO CHECK SENSOR TO PANEL WIRING WITH
AN OHMMETER OR OTHER CHECKER, FIRST DISCONNECT THE PLUG-IN
TERMINAL STRIPS FROM THE BACK OF THE ANNUNCIATOR UNIT. APPLY-
ING VOLTAGE TO THE ANNUNCIATOR THROUGH THE SENSOR LEADS MAY
DAMAGE THE DEVICE. IN ADDITION, THE AREA SHOULD BE TESTED AS
NON-HAZARDOUS BEFORE SUCH TESTING COMMENCES.