Installation Instructions; Location; Installation; 6-Series Low Voltage - Macurco CM-6 User Instructions

Macurco CM-xx Operation Manual

3 Installation Instructions

This detector helps monitor for the presence and concentration level of a certain specified
airborne gas. Misuse may produce an inaccurate reading, which means that higher levels
of the gas being monitored may be present and could result in overexposure and cause
serious injury or death. For proper use, see supervisor or User manual, or contact Technical
Support at 1-844-325-3050.

3.1 Location

A CM-xx is normally mounted at breathing level, about 5 feet (1.5 meters) above the floor on a wall or column in a central area
where air movement is generally good. The unit, on average, can cover approximately 5,000 sq. ft. (465 sq. meters) to 7,500 sq.
ft. (697 sq. meters). The coverage depends on air movement within the room or facility. Extra detectors may be needed near
any areas where people work or where the air is stagnant. Some of the factors that affect the coverage area are application
type, personnel work areas and movement, room size, air movement, potential threat, mounting location, along with other site-
specific factors that must be considered. Please check local regulations or requirements prior to installation. The CM-xx mounts
on a 4x4 electrical box supplied by the contractor. Do not install the CM-xx inside another box unless it has good air flow
through it. Do NOT mount the CM-xx where the normal ambient temperature is below 0°F or exceeds 125°F (below -18°C or
above 52°C).
High voltage terminals (120/240 VAC) are located within this detector (CM-12), presenting
a hazard to service technicians. Only qualified technicians should open the detector case
and service the internal circuits. Ensure power is de-energized from the detector relays
prior to servicing the unit. Failure to do so may result in electrical shock.

3.2 Installation

3.2.1 6-Series Low Voltage

1. The CM-6 mounts on a 4" square (or 4x4) electrical box supplied by the contractor. Do not mount the CM-6 inside
another box, unless it has good air flow through it.
2. Connect the CM-6 to Class 2 power supply only. It is suggested to use a separate transformer for powering the unit or
units because of possible interferences from other devices on the same power supply.
3. Connect the CM-6 to the control cables with terminal plugs. When making connections, make sure the power is off.
4. There are two terminals for Power: 12 to 24 VAC or 12 to 32 VDC, with no polarity preference.
5. There are two terminals for the dry alarm relay contacts, again 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
Default – Factory Settings
6. The alarm relay can be configured to normally open (default) (N.O.) or normally closed (N.C.) and will activate if the gas
concentration exceeds alarm set point. It will deactivate once the gas concentration drops below the alarm set point.
Note that the "disable" setting will cause the alarm relay not to engage at all.
7. 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
this User manual for details on relay settings.
REV – 1.2.1
WARNING
WARNING
of this User manual for details on relay settings.
[34-2900-0511-6 ]
4.5
4.5 Default – Factory Settings
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