Table of Contents
Advertisement
3 INSTALLATION AND OPERATING INSTRUCTIONS
The following instructions are intended to serve as a general guideline for the use of the Macurco CD-6H / CD-6MC Carbon Dioxide
Detector. It is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for each facility. If you have any
doubts about the applicability of the equipment to your situation, consult an industrial hygienist or call Technical Support at 844-325-
3050.
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 over exposure and
cause serious injury or death. For proper use, see supervisor or User Instructions, or call Technical Support at 844-325-3050.
3.1 Location
Mounting height will be dependent on the application. For applications with CO2 tanks mount height should be about one foot above the
floor. For indoor air quality mount detector 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 about 5,000 sq. ft. (465 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. The CD-6"x" mounts on a 4x4 electrical box supplied by the contractor. Do not install the CD-6"x" inside another box unless it
has good air flow through it. Do NOT mount the CD-6"x" where the normal ambient temperature is below 32°F or exceeds 122°F (below
0°C or above 50°C).
High voltage terminals (120/240 VAC) are located within this detector, presenting a hazard to service technicians. Only qualified
technicians should open the detector case and service the internal circuits. Ensure power is removed from the detector relays prior to
servicing the unit. Failure to do so may result in serious injury or death.
3.2 Installation
1. The CD-6"x" mounts on a 4" square (or 4x4) electrical box supplied by the contractor. Do not mount the CD-6"x" inside
another box, unless it has good air flow through it.
2. Connect the CD-6"x" to Class 2 power supply only. It is suggested to use a dedicated transformer for powering the unit or
units because of possible interferences from other devices on the same power supply.
3. Connect the CD-6"x' to the control cables with terminal plugs. When making connections, make sure the power is de-
energized.
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
OPERATION
of these User Instructions for details on relay 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
for details on relay settings.
8. 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.
9. The Fan Relay will engage if the fan setting Carbon 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 conditions have been met:
WARNING
WARNING
3.4 OPERATION
8
3.4
of these User Instructions
Advertisement
Table of Contents
