Instructions / Assembly

CHAPTER 2: INSTALLATION

WIRING SENSORS AND TRANSDUCERS

The 1800 Zones are compatible with NO/NC dry contacts, 2.8K and 10K

thermistors, and 4–20mA transducers. To prevent an alarm from occurring

while wiring the sensors, it is recommended that the zone alarm be disabled

[SENSOR ON/OFF] + [Zone #1–8]. After wiring all of your sensors you

will need to configure the zones using the [SET] + [CONFIGURE] com-

mand. See Chapter Four for more information on Disabling Zone alarms

and Configuring Zones.

Recommended sequence for adding a new sensor:

1. Disable the Zone’s alarm

2. Wire up the sensor

3. Configure the Zone

4. Enable the Zone

If a false alarm occurs while wiring a sensor, you can quickly

acknowledge it by pressing the [ALARM/CANCEL] key. See Chapter

Five for more information on User Acknowledgment Codes.

Temperature: The unit will accept 2.8K or 10K thermistors. These should

be wired to a Zone terminal and the adjacent ground terminal. For rec-

ommended thermistors check the accessory list or thermistor data in the

appendices. Thermistor temperature range:

2.8K: -109°F to 115°F (-85°C to 57°)

10K: -87ºF to 168ºF (-66ºC to 76ºC)

Dry Contact: Only contacts which have no voltage or current applied may

be used. Connect the contact to a Zone terminal and an adjacent ground

terminal. Do NOT try to monitor a contact that switches 120VAC. This will

permanently damage the unit.

4-20mA: A 4–20mA transducer requires you to have an external DC power

supply for the transducer. Connect the positive wire of your transducer to

the positive terminal of your DC power supply. Connect the negative termi-

nal of the transducer to a Zone terminal on the Sensaphone 1800. Connect

the negative terminal from your power supply to the adjacent ground termi-

nal on the 1800.