12-Series Line Voltage - Macurco CD Series User Instructions

Macurco CD-xx H/MC Manual
Ensure that the wire cannot easily be pulled from the connector. When the wires are connected seat the modular connector
into the header ensuring that the latch engages.

3.3.2 12-Series Line Voltage

With the exception of the safety ground, all field wiring is completed via modular connectors (provided). After wiring, simply
plug the modular connectors into the matching connectors on the back side of the detector.
3.3.2.1 Power Connection
Mains connections should be done in accordance with National and Local Electrical Codes. Only qualified personnel should
connect Mains power to any device. Macurco recommends a minimum wire size of AWG18 and the wire insulator must be rated
for 140°F (60°C) service. The modular connector will accept wire from 12 to 24 AWG. The safety ground wire should be secured
to the ground screw of the metal electrical box. Tighten the screw and make sure the wire is snug. Ensure that the wire cannot
be pulled out from under the screw. The Line (L) and Neutral (N) wires should be stripped 1/4 in. (6.5 mm), insert the wire into
the "L" and "N" wire positions of the modular Fan/Power connector and tighten the screw clamp. Ensure that the wire cannot
be easily pulled from the connector. Plug the modular connection into the Fan/Power connection and ensure that it latches into
the header properly.
3.3.2.2 Fan Relay Connection
All the SPDT Fan relay terminals are available at the Fan/Power modular connector. Each fan relay terminal normally open,
common and normally closed (NO, COM, and NC) can accommodate a wire size 12 to 24 AWG. To install the wiring for the
relays, disconnect the connectors from the header. Strip the insulation off each wire back approximately ¼ inch (6.5 mm), insert
the bare wire into the terminal and tighten the screw clamp. Ensure that the wire cannot easily be pulled from the connector.
Plug the modular connection into the Fan/Power connection and ensure that it latches into the header properly.
3.3.2.3 Alarm Relay Connection
The external alarm connections (A and B) are available at the Alarm modular connector. There is no polarity for these
connections. To install the wiring for the alarm contacts, disconnect the connector from the header on the detector. Strip the
insulation off each wire back approximately 1/4 in. (6.5 mm), insert the bare wire into the terminal and tighten the screw clamp.
Ensure that the wire cannot easily be pulled from the connector. When the wires are connected seat the modular connector
into the header ensuring that the latch engages.
3.3.2.4 4-20 mA Signal Connection
The positive and negative 4-20mA signal connections (+ and -) are available at the 4-20mA modular connector, a 2-position
connector. To install the wiring for the 4-20 mA contacts, disconnect the connector from the header on the detector. Strip the
insulation off each wire back approximately 1/4 in. (6.5 mm), insert the bare wire into the terminal and tighten the screw clamp.
Ensure that the wire cannot easily be pulled from the connector. When the wires are connected seat the modular connector
into the header ensuring that the latch engages.
Note : The 4-20mA current loop outputs may be used with the Macurco DVP-120 control panel or other systems. The 4-20mA
42T 42T
signal connections to detectors should be size AWG18 (minimum) for short runs. Refer to the table for recommended wire
gauges. Do not bundle detector 4-20mA signal connections with AC power cables to prevent electrical interference. If AC power
connections must be bundled with the detector 4-20mA signal cables, the signal connections should be made with a twisted pair
of the appropriate gauge, with an overall foil and braid shield. All shields should be terminated at the DVP-120 end of the cable
only. A ground stud is provided near the bottom left corner of the DVP-120 panel.
REV – 1.1 [34-2900-0510-8] 17 | P a g e