Macurco CD Series User manual

IMPORTANT: Keep these user instructions for reference.
Macurco™ CD-6H/CD-6MC/CD-12H/CD-12MC
Carbon Dioxide Detector, Controller and Transducer
User Instructions

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Table of Contents
1General Safety Information........................................................................................................................................................4
1.1 List of warnings .................................................................................................................................................................4
2Use Instructions and Limitations................................................................................................................................................5
2.1 Use For ..............................................................................................................................................................................5
2.2 Do NOT use for ..................................................................................................................................................................6
2.3 Features.............................................................................................................................................................................6
2.4 Specifications ....................................................................................................................................................................6
2.4.1 6-Series Low Voltage.....................................................................................................................................................7
2.4.2 12-Series Line Voltage...................................................................................................................................................7
3Installation Instructions .............................................................................................................................................................7
3.1 Location.............................................................................................................................................................................7
3.2 Installation.........................................................................................................................................................................7
3.2.1 6-Series Low Voltage.....................................................................................................................................................7
3.2.2 12-Series Line Voltage.................................................................................................................................................12
3.3 Wiring Connections .........................................................................................................................................................16
3.3.1 6-Series Low Voltage...................................................................................................................................................16
3.3.2 12-Series Line Voltage.................................................................................................................................................17
4Operations ...............................................................................................................................................................................18
4.1 Power up .........................................................................................................................................................................18
4.2 Display turned “On” ........................................................................................................................................................18
4.3 Display turned “Off”........................................................................................................................................................18
4.4 4-20mA Loop ...................................................................................................................................................................19
4.5 Default –Factory Settings ...............................................................................................................................................19
4.5.1 Selecting Default Configuration –“dEF” .....................................................................................................................20
4.5.2 Power-Up Test Setting –“PUt” ...................................................................................................................................20
4.5.3 Display Setting –“dSP” ...............................................................................................................................................20
4.5.4 Buzzer Setting –“bUZ”................................................................................................................................................20
4.5.5 Alarm Relay Setting –“ArS” ........................................................................................................................................21
4.5.6 Alarm Relay Configuration –“Arc”..............................................................................................................................21
4.5.7 Fan Relay Setting –“FrS”.............................................................................................................................................21
4.5.8 Fan Relay Delay Setting –“Frd” ..................................................................................................................................21
4.5.9 Fan Relay Minimum Runtime Setting –“Frr”..............................................................................................................21
4.5.10 Fan Relay Latching Setting –“FrL”..........................................................................................................................21
4.5.11 Trouble Fan Setting –“tFS” ....................................................................................................................................21
4.5.12 4-20mA Output setting –“420”..............................................................................................................................22
5Troubleshooting.......................................................................................................................................................................22

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5.1 On-Board Diagnostics......................................................................................................................................................22
5.1.1 4-20mA troubleshooting.............................................................................................................................................22
5.1.2 “t” Error Codes............................................................................................................................................................22
5.2 Sensor Poisons ................................................................................................................................................................23
5.3 End-of-Life Signal.............................................................................................................................................................23
6Maintenance ............................................................................................................................................................................23
6.1 Sensor Life Reset .............................................................................................................................................................24
6.2 Cleaning...........................................................................................................................................................................24
7Testing......................................................................................................................................................................................24
7.1.1 Operation Test ............................................................................................................................................................24
7.1.2 Manual Operation Test ...............................................................................................................................................25
7.2 Calibration and Test Kits..................................................................................................................................................25
7.2.1 Field Test Kit................................................................................................................................................................26
7.2.2 Field Calibration Kit.....................................................................................................................................................26
7.3 Gas Testing ......................................................................................................................................................................26
7.3.1 Testing the Fan Relay ..................................................................................................................................................26
7.3.2 Testing the Alarm Relay ..............................................................................................................................................27
7.3.3 Testing the 4-20mA loop.............................................................................................................................................28
7.3.4 Aerosol Test ................................................................................................................................................................28
7.4 Field Calibration Procedure.............................................................................................................................................28
7.4.1 CD-xxH.........................................................................................................................................................................28
7.4.2 CD-xxMC......................................................................................................................................................................28
8Appendix A –Table of Figures..................................................................................................................................................30
9Appendix B –Menu Structure..................................................................................................................................................31
9.1 Main Menu......................................................................................................................................................................31
9.2 Auto Test Menu “bUZ” ....................................................................................................................................................32
9.3 Configuration Menu “CON”.............................................................................................................................................33
9.4 Select Test Menu “tst” ....................................................................................................................................................39
9.5 CAL Menu *CD-xxMC Only ..............................................................................................................................................40
10 Macurco Gas Detection Product limited warranty ..................................................................................................................41
Technical Support Contact Information .........................................................................................................................................41
General Contact Information..........................................................................................................................................................41

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1General Safety Information
The following instructions are intended to serve as a general guideline for the use of the Macurco CD-6H, CD-6MC, CD-12H, and
CD-12MC Carbon Dioxide Detector. This manual will refer to these devices a CD-xx-H/MC unless content is specific to a model.
This manual is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for your facility. If you
have any doubts about the applicability of the equipment to your situation, consult an industrial hygienist or call Technical
Support at 1-844-325-3050.
1.1 List of warnings
WARNING
Each person using this equipment must read and understand the information in this user manual before
use. Use of this equipment by untrained or unqualified persons or use that is not in accordance with this
user manual, may adversely affect product performance.
Use only for monitoring the gas which the sensor and monitor is designed to detect. Failure to do so may
result in exposures to gases not detectable and cause serious injury or death. For proper use, see
supervisor or user manual, or contact Technical Support at 1-844-325-3050.
This equipment may not function effectively below 32°F or above 122°F (0°C or above 50°C). Using the
detector outside of this temperature range may adversely affect product performance.
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.
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 de-energized from the detector relays prior to servicing the unit. Failure to do so may
result in electrical shock.
Do not disassemble unit or attempt to repair or modify any component of this instrument. This
instrument contains no user serviceable parts, and substitution of components may impair product
performance.
Using a certified gas with a concentration other than the one listed for this detector when conducting a
calibration or calibration verification test (bump test) will produce inaccurate readings. This means that
higher levels of the gas being monitored may be present and could result in overexposure. For proper
use, see supervisor or User manual, or contact Technical Support at 1-844-325-3050.
The following steps must be performed when conducting a calibration or calibration verification test
(bump test) to ensure proper performance of the monitor. Failure to do so may adversely affect product
performance.
•When performing a calibration or calibration verification test (bump test), only use certified
calibration gas at the required concentration level.
•Do not test with expired calibration gas.
•Do not cover or obstruct display or visual alarm cover.
•Ensure sensor inlets are unobstructed and are free of debris
Failure to follow instructions outlined in this user manual can result in sickness or death.

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2Use Instructions and Limitations
The Macurco CD-xxH/MC a dual relay Carbon Dioxide (COP2P) detector, controller, and transducer available in low voltage and line
voltage options. The CD-xxH/MC has selectable 4-20 mA output, buzzer and digital display options. It is an electronic detection
system used to measure the concentration of Carbon Dioxide and provide feedback and automatic ventilation control to help
reduce COP2Pconcentrations in conference rooms, classrooms, meeting halls or similar applications. The CD-xxH/MC is a low-level
meter capable of displaying from 0-5000 ppm (parts per million) of Carbon Dioxide. The CD-xxH/MC is factory calibrated and
100% tested for proper operation.
The CD-xxH uses an automated background calibration program to set the clean air level on a regular basis.
The CD-xxMC has the same setting and features of the CD-xxH with the addition of being able to perform a manual calibration.
The CD-xxMC requires a manual calibration process at a minimum of once per year using the Macurco CD6-FCK calibration kit.
WARNING
Each person using this equipment must read and understand the information in this user manual
before use. Use of this equipment by untrained or unqualified persons or use that is not in
accordance with this user manual, may adversely affect product performance.
2.1 Use For
The CD-xxH/MC provides COP2Pdetection and automatic ventilation control for conference rooms, classrooms, meeting halls or
similar applications. Carbon dioxide is a colorless, odorless gas that is produced both by people exhaling COP2Pas well the burning
of gasoline, coal, oil, and wood. The outdoor concentration of carbon dioxide can vary from 350-450 parts per million (ppm) or
higher in areas with high vehicle traffic or industrial activity. The indoor COP2Plevel depends upon the number of people present,
how long an area has been occupied, the amount of outdoor fresh air entering the area and other factors. COP2Pconcentrations
indoors can vary several hundred parts per million in areas with many people present for an extended period and where fresh
air ventilation is limited. Outdoor "fresh" air ventilation is important as it can dilute COP2Plevels of the indoor environment. The
amount of fresh air that should be supplied to a room depends on the type of facility and room. Ventilation should keep carbon
dioxide concentrations below 1000 ppm and create indoor air quality conditions that are acceptable to most individuals.
For applications storing or using COP2Ptanks, the detector will provide notification in the event of a gas leak. Such applications
include but are not limited to food storage, beverage dispensing, agriculture, fire suppression, medical, etc.
The CD-xxH uses an automated background calibration program to set the clean air level on a regular basis. The CD-xxH will
maintain accuracy if it is exposed to the “clean air reference value” (this reference value is the lowest concentration to which
the sensor is exposed) at least once per week.
The CD-xxMC does not perform automated background calibrations and it is suggested to perform a Manual Calibration on the
unit no less than once per year using the Macurco CD6-FCK calibration kit.
42TNote:42T This applies when used in typical indoor ambient air. The CD-xxH/MC can be used stand alone, with the Macurco
Detection and Ventilation Control Panel, other 12 VAC or 24 VDC fire/security panels or building automation systems.
WARNING
Use only for monitoring the gas which the sensor and monitor is designed to detect. Failure to do
so may result in exposures to gases not detectable and cause serious injury or death. For proper
use, see supervisor or user manual, or contact Technical Support at 1-844-325-3050.

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2.2 Do NOT use for
The CD-xxH/MC is not intended for use in hazardous locations or industrial applications such as refineries, chemical plants, etc.
Do not mount the CD-xxH/MC where the normal ambient temperature is below 32°F or exceeds 122°F (0°C or above 50°C). The
CD-xxH/MC mounts on a type 4S electrical box supplied by the contractor. Do not install the CD-xxH/MC inside another box
unless it has good air flow through it.
WARNING
This equipment may not function effectively below 32°F or above 122°F (0°C or above 50°C). Using
the detector outside of this temperature range may adversely affect product performance.
2.3 Features
•ETL LISTED to UL 61010-1, Certified to CSA C22.2#61010-1
•Low level meter capable of displaying from 0-5000 ppm of COP2
•Sensor Resolution of 50 ppm
•The CD-xxH uses an automated background calibration program to set the clean air level on a regular basis *
•The CD-xxMC uses a manual Calibration to set clean and polluted air levels using a Calibration Kit **
•Selectable fan and alarm relay activation
•5 A SPDT fan relay for control of ventilation systems / communication with Alarm system
•0.5 A N.O. or N.C. alarm relay connects to warning devices or control panels
•4-20 mA Current Loop
•Mounts on a standard 4x4 electrical box and becomes cover for the box
•Supervised system: any internal detector problem will cause the fan & alarm relay to activate
•Carbon Dioxide sensor has an expected 15-year life. EOL indicator after 180 months of sensor power-up
•Calibration verification test kit is available. One screw allows access for gas test
*CD-xxH Only
**CD-xxMC Only
2.4 Specifications
•Shipping Weight: 1 pound (0.45 kg)
•Size: 4 1/2 x 4 x 2 1/8 in. (11.4 X 11.4 X 5.3 cm)
•Color: White or Dark Gray
•Connections: plugs/terminals
•Mounting box: (not included) 4x4 electric
•Fan relay: 5 A, 240 VAC, pilot duty, SPDT, latching or non-latching
•Fan relay actuation: selectable at dIS (disabled), 600, 700, 800, 900, 1000 (default)…, 4800, 4900, 5000 ppm
•Fan Delay Settings of 0, 1, 3 (default), 5 and 10 minutes
•Fan Relay Minimum Runtime settings are 0 (default), 3, 5, 10 or 15 minutes
•Fan relay latching or non-latching (default) selectable
•Alarm relay: 0.5A 120 V, 60 VA
•Alarm relay actuation: selectable N.O. (default) or N.C.
•Alarm relay settings: “dIS” (disabled), 900, 1000, 1100, 1200, …4000(default), ….4900, 5000
•Current Loop, 4-20 mA for 0-5000 ppm COP2P, selectable to off or on (default)
•Buzzer: 85 dBA at 10cm settable to off or on (default)
•Digital display: 4-digit LED selectable to off or on (default).
•Operating Environment: 32°F to 122° F (0°C to 50°C), 10 to 90% RH non-condensing
•Operating altitude: Up to 16,404ft (5,000m)

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2.4.1 6-Series Low Voltage
•Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC
•Current (max) @ 24 VDC: 126 mA in alarm (two relays), 108 mA (fan relay only) and 85 mA (standby)
2.4.2 12-Series Line Voltage
•Power: 100-240VAC (50-60 HZ)
•Current (Max) 1.0 A MAX
3Installation Instructions
WARNING
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
Mounting height will be dependent on the application. For applications with COP2Ptanks, 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 between 900 sq. ft. (83.62 sq.
meters) and 5000 sq. ft. (464.51 sq. meters) depending on the application. Applications with CO2tanks, spacing near the tanks
should be closer to the 900 sq. ft. For indoor air quality and purposefully enriched areas, such as greenhouses, spacing can be up
to 5000 sq. ft. When determining the coverage area for each application, keep in mind that each application is going to be
different and needs to be evaluated to determine the number of detectors required to ensure proper coverage. 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 CD-xxH/MC mounts on a 4x4 electrical box supplied by the contractor. Do not install the CD-xxH/MC inside another box
unless it has good air flow through it. DO NOT mount the CD-xxH/MC where the normal ambient temperature is below 32°F or
exceeds 122°F (below 0°C or above 50°C).
WARNING
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 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 CD-xxH/MC mounts on a 4” square (or 4x4) electrical box supplied by the contractor. DO NOT mount the CD-
xxH/MC inside another box, unless it has good air flow through it.

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2. Connect the CD-6H/MC 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-6H/MC 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 31T U4.5
Default –Factory SettingsU31T of this User manual 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 31T4.5 Default –Factory Settings31T of
these User Instructions 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 setpoint). 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:
•Carbon Dioxide concentration has dropped below fan setting
•Fan Relay Runtime 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.
10. The Current Loop is 4 mA in clean air and 4-20 mA for 0-5000 ppm COP2
Figure 3-1 6-Series 4-20 mA Output diagram

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Figure 3-2 6-Series Rear View
Figure 3-3 6-Series typical installation diagram

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Figure 3-4 6-Series Multiple Device diagram
Figure 3-5 6-Series Alarm Control Panel diagram