12-Series Line Voltage - Macurco CX-6 Manuel D'instructions

Macurco CX-xx Manual (Rev-1.0) Eng

3.2.2 12-Series Line Voltage

1. The CX-12 mounts on a 4" square (or 4x4) electrical box supplied by the contractor. Do not mount the CX-12
inside another box, unless it has good air flow through it.
2. There are two terminals for the mains power connection labeled L (line) and N (neutral). Mains connections
should be done in accordance with National and Local Electrical Codes. Only qualified personnel should
connect mains power to any device.
3. There are two terminals for the dry alarm relay contacts with no polarity preference. The alarm relay can
switch up to 0.5 A 120 V, or 60 VA. The alarm relay is activated if gas reaches or exceeds the alarm settings.
See section 4.5 Configuration "CON" for details on relay settings.
4. The alarm relay can be configured to normally open (default) (N.O.) or normally closed (N.C.) and will
activate:
a. if either the CO or NO
concentration drops below the alarm set point. Note that setting both "ArS.C" and "ArS.n" to "diS"
will cause the alarm relay not to engage.
b. during a power up test "PUt".
c. when a trouble condition is present.
5. The dry contact, SPDT fan relay has three terminals. The common (COM.), normally open (N.O.) and the
normally closed (N.C.) contact. The fan relay can switch up to 5.0 A up to 240 VAC. See section 4.5
Configuration "CON" for details on relay settings.
6. The Fan Relay can be configured for latching or non-latching (default) when activated (when the gas
concentration exceeds fan relay set point). Once latched in, power will need to be interrupted or the "TEST"
button pressed to un-latch the relay condition.
7. The Fan Relay will engage if the fan setting Carbon Monoxide or Nitrogen Dioxide concentration is exceeded
for longer than the Fan Relay Delay time. Unless it is configured for latching, the fan relay will disengage
once both of these conditions have been met:
• Carbon Monoxide and Nitrogen Dioxide concentrations have dropped below fan setting
• Fan Relay Run time has been exceeded
Note that the "disable" fan setting will cause the fan relay to not engage. The fan relay will engage in trouble
fault condition (if the Trouble Fan Setting Option is set to "ON") and will disengage once trouble fault
condition is cleared.
8. The Current Loop is 4 mA in clean air and 4-20 mA for 0-200ppm CO and 4-20 mA for 0-20ppm NO
are two terminals and polarity is marked on the connector.
NOTE: 22 to 12 AWG wire shall be used. Wire used shall meet the temperature range of the detector i.e. 0°F to 125°
F (-18°C to 52°C).
REV – 1.1
gas concentration exceeds the alarm set point. It will deactivate once the gas
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