Macurco CD-6B User manual

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

Macurco CD-6B Manual (Rev-1.0) Eng
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1 General Safety Information...................................................................................................................................... 4
1.1 List of warnings................................................................................................................................................. 4
2 Use Instructions and Limitations .............................................................................................................................. 4
2.1 Use For.............................................................................................................................................................. 5
2.2 Do NOT use for ................................................................................................................................................. 5
2.3 Features............................................................................................................................................................ 6
2.4 Specifications.................................................................................................................................................... 6
3 Installation and Operating Instructions.................................................................................................................... 7
3.1 Location ............................................................................................................................................................ 7
3.2 Installation........................................................................................................................................................ 7
3.3 Wiring Connections ........................................................................................................................................ 11
3.3.1 Power Connection .................................................................................................................................. 11
3.3.2 Alarm 1 Relay Connection ...................................................................................................................... 11
3.3.3 Alarm 2 Relay Connection ......................................................................................................................12
3.3.4 Alarm 3 Relay Connection ...................................................................................................................... 12
3.3.5 Install the Wiring .................................................................................................................................... 12
4 Operations..............................................................................................................................................................12
4.1 Power up.........................................................................................................................................................12
4.2 Awareness Alarm............................................................................................................................................ 12
4.3 Alarm 1 Relay.................................................................................................................................................. 13
4.4 Alarm 2 Relay.................................................................................................................................................. 13
4.5 Alarm 3 Relay.................................................................................................................................................. 13
4.6 Alarm Behavior...............................................................................................................................................13
4.6.1 Alarm Priority.......................................................................................................................................... 13
4.6.2 Display turned “On”................................................................................................................................13
4.6.3 Display turned “Off” ............................................................................................................................... 14
4.7 Relay Latching.................................................................................................................................................14
4.8 Default – Factory Settings ..............................................................................................................................15
4.8.1 Select Default Configuration – “dEF” ..................................................................................................... 16
4.8.2 Select Power-Up Test Setting – “PUt” .................................................................................................... 16
4.8.3 Select Display Configuration – “dSP”...................................................................................................... 17
4.8.4 Select Buzzer Configuration – “bUZ”......................................................................................................17
4.8.5 Select Alarm 1 Relay Setting – “A1S”...................................................................................................... 17
4.8.6 Select Alarm 1 Relay Config – “A1c”....................................................................................................... 18
4.8.7 Select Alarm 1 Relay Latching – “A1L”....................................................................................................18
4.8.8 Select Alarm 1 tWa – “A1t” .................................................................................................................... 18
4.8.9 Select Alarm 2 Relay Setting – “A2S”...................................................................................................... 19
4.8.10 Select Alarm 2 Relay Configuration – “A2c”...........................................................................................19
4.8.11 Select Alarm 2 Relay Latching – “A2L”....................................................................................................19
4.8.12 Select Alarm 3 Relay Setting – “A3S”...................................................................................................... 20
4.8.13 Select Alarm 3 Relay Latching – “A3L”....................................................................................................20
4.8.14 Select Trouble Fan Setting – “tFS”.......................................................................................................... 20
4.8.15 Select Automatic Background Calibration – “Abc”.................................................................................21
4.8.16 Calibration Period – “CAL”...................................................................................................................... 21

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5 Troubleshooting ..................................................................................................................................................... 21
5.1 On-Board Diagnostics .....................................................................................................................................21
5.1.1 Trouble Condition...................................................................................................................................21
5.1.2 “t” Error Codes .......................................................................................................................................22
5.2 Sensor Poisons................................................................................................................................................ 23
5.3 End-of-Life Signal............................................................................................................................................23
6 Maintenance........................................................................................................................................................... 23
6.1 Calibration ...................................................................................................................................................... 24
6.2 Sensor Life Reset ............................................................................................................................................24
6.3 Cleaning ..........................................................................................................................................................24
7 Testing ....................................................................................................................................................................25
7.1 Testing ............................................................................................................................................................25
7.1.1 Operation Test........................................................................................................................................25
7.1.2 Manual Operation Test........................................................................................................................... 25
7.2 Calibration Kit ................................................................................................................................................. 26
7.3 Gas Testing ..................................................................................................................................................... 27
7.3.1 Testing the Alarm Relays ........................................................................................................................27
7.3.2 Aerosol Test............................................................................................................................................28
7.4 Field Calibration.............................................................................................................................................. 28
7.4.1 Field Calibration Procedure....................................................................................................................28
7.4.2 Time Since Calibration............................................................................................................................29
8 Appendix A – Table of Figures ................................................................................................................................ 30
9 Appendix B – Menu Structure ................................................................................................................................ 31
9.1 Main Menu .....................................................................................................................................................31
9.2 Auto Test “bUZ” Menu ...................................................................................................................................32
9.3 Configuration “CON” Menu............................................................................................................................33
9.4 Select Test “tst” Menu.................................................................................................................................... 39
9.5 Calibration “CAL” Menu ................................................................................................................................. 40
9.6 Sensor Reset “SEN” Menu .............................................................................................................................. 41
10 Macurco Gas Detection Product limited warranty............................................................................................. 42
Technical Support Contact Information......................................................................................................................42
General Contact Information...................................................................................................................................... 42

Macurco CD-6B Manual (Rev-1.0) Eng
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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-6B Carbon
Dioxide Detector. 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.
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 verification test (bump test) or calibration
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 verification test (bump test)
or calibration to ensure proper performance of the monitor. Failure to do so may adversely affect
product performance.
•When performing a calibration verification test (bump test) and calibration
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.
2Use Instructions and Limitations
The Macurco CD-6B is a three relay Carbon Dioxide (CO2) detector, controller, and transducer available in low
voltage.
The CD-6B has three selectable alarm relays, buzzer, and digital display options.

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The CD-6B is a low-level meter capable of displaying from 0 to 5.0% vol. with a display resolution of 0.01% vol.
(measurement is % by volume) of CO2.
The CD-6B is factory calibrated and 100% tested for proper operation.
The CD-6B has the option to use automated background calibration (Abc) to set the clean air level on a regular basis.
If not using automated background calibration, the CD-6B requires a manual calibration process at a minimum of
once every year using the Macurco CD6B-FCK calibration kit.
Carbon dioxide is a colorless, odorless gas that is produced both by people exhaling CO2as 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 CO2level 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. CO2concentrations 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 CO2levels 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.
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-6B provides CO2detection and automatic ventilation control for buildings in non-hazardous locations
wherever 100 lbs or more of CO2is stored – bars, restaurants, breweries, etc.
The Awareness Alarm and Alarm 1 Relay is intended to locally warn users of high level of CO2. The Alarm 2 Relay and
Alarm 3 Relay are intended to sound remote alarm functions to warn building users of high CO2concentrations. The
CD-6B is not compatible with Macurco DVP Control Panels. The three (3) dry contact relays can be connected back
to a Fire or security panel.
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.
2.2 Do NOT use for
The CD-6B is not intended for use in hazardous locations or industrial applications such as refineries, chemical
plants, etc. Do not mount the CD-6B where the normal ambient temperature is below 32°F or exceeds 121°F (0°C or
above 50°C). The CD-6B mounts on a type 4S electrical box supplied by the contractor. Do not install the CD-6B
inside another box unless it has good air flow through it.

Macurco CD-6B Manual (Rev-1.0) Eng
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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 to 5.0% vol. of CO2 with resolution of 0.01% vol.
•Three dry contact alarm relays for control of ventilation systems / communication with alarm system
•Mounts on a standard 4x4 electrical box and becomes cover for the box
•Supervised system: any internal detector problem will cause the buzzer to activate
•Carbon Dioxide sensor has an expected 15-year life. EOL indicator after 180 months of sensor power-up
•Optional automated background calibration to set the clean air level on a regular basis
•Manual calibration if automated background calibration option is disabled
•One screw access for testing and calibration. Calibration and calibration verification test kit is available.
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
•Alarm 1 Relay: SPST to switch 2.0A load, up to 240 VAC or 30 VDC
•Alarm 1 Relay configuration: selectable N.O. (default) or N.C.
•Alarm 1 Relay alarm level settings: “diS”, 0.25, 0.50 (default), 1.00, 1.50, 2.00, 2.50, 3.00, 3.50, 4.00, 4.50,
5.00
•Alarm 1 Relay latching: off (on)
•Alarm 1 Relay 8-hour time weighted average option: On (OFF)
•Alarm 1 Relay trouble condition: on (off)
•Alarm 2 Relay: SPST to switch 2.0A load, up to 240 VAC or 30 VDC
•Alarm 2 Relay configuration: selectable N.O. (default) or N.C.
•Alarm 2 Relay alarm level settings: “diS”, 0.25, 0.50, 1.00, 1.50 (default), 2.00, 2.50, 3.00, 3.50, 4.00, 4.50,
5.00
•Alarm 2 Relay latching: off (on)
•Alarm 3 Relay: SPDT to switch 2.0A load, up to 240 VAC or 30 VDC
•Alarm 3 Relay configuration can be wired to N.O. or N.C.
•Alarm 3 Relay alarm level settings: “diS”, 0.25, 0.50, 1.00, 1.50, 2.00, 2.50, 3.00 (default), 3.50, 4.00, 4.50,
5.00
•Alarm 3 Relay latching: on (off)
•Buzzer: 85 dBA at 10cm settable to off or on (default)
•Digital display: 4-digit LED selectable to off or on (default)
•Operating Environment: Temperature range 32°F to 121°F (0°C to 50°C), Humidity range 0 to 85% RH non-
condensing, Pressure range 1 ATM ± 20%

Macurco CD-6B Manual (Rev-1.0) Eng
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•Storage Environment: Temperature range 0°F to 125°F (-18°C to 52°C), Humidity range 0-99% RH non-
condensing
•Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC
•Current (max) @ 24 VDC: 50 mA in alarm (three relays), 40 mA in alarm (two relays), 30 mA (1 relay only),
and 25 mA (standby)
3Installation and Operating 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 CO2tanks, 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-6B mounts
on a 4x4 electrical box supplied by the contractor. Do not install the CD-6B inside another box unless it has good air
flow through it. Do NOT mount the CD-6B where the normal ambient temperature is below 32°F or exceeds 121°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
1. The CD-6B mounts on a 4” square (or 4x4) electrical box supplied by the contractor. Do not mount the CD-6B
inside another box, unless it has good air flow through it.
2. Connect the CD-6B to Class 2 Listed 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-6B 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. The alarm relays can switch up to 2.0 A load, up to
240 VAC or 30 VDC. The alarm relays are activated if gas reaches or exceeds the alarm settings. See section
4.5 Default – Factory Settings of these User instructions for details on relay settings.

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6. The Alarm 1 Relay and Alarm 2 Relay can be configured to normally open (N.O.) (default) or normally closed
(N.C.). Alarm 3 Relay can be wired N.O or N.C.
7. The relays will activate if the gas concentration exceeds alarm set point. Note that if the alarm relay set
point is set to “diS”, the alarm relay will not engage at all.
8. The alarm relays can be configured for latching or non-latching. When latching is set to “On” and the gas
concentration exceeds the relay setpoint, power will need to be interrupted or the “TEST” button pressed to
un-latch (turn off) the relay condition. When latching is set to “OFF”, the relay will deactivate once the gas
concentration drops below the alarm set point.
9. The Alarm 1 Relay will engage in trouble condition (if the Trouble Fan Setting Option is set to “On”) and will
disengage once trouble condition is cleared.
Figure 3-2 CD-6B Rear View

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Figure 3-3 CD-6B Typical Installation wiring diagram
Figure 3-4 CD-6B Typical Installation Layout
NOTE: The detector should be mounted as close to the primary leak source as possible. If the tanks are inside, the
detector is typically placed as shown above. If the tanks are outside, the detector is typically placed at the
connection points of the conduit.
CD-6B
Mounted ~12”
above floor
CO2
CO2
Horn/
Strobe
Entrance
Horn/
Strobe
Gas
Valves

Macurco CD-6B Manual (Rev-1.0) Eng
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Figure 3-5 CD-6B Multiple Device diagram
Figure 3-6 CD-6B Alarm Control Panel diagram