Macurco™
Carbon Dioxide Detector
CD-6H
GAS DETECTION
Detector, Controller and Transducer
Carbon Dioxide Detection and Control
The Macurco CD-6H is a low voltage, dual relay Carbon Dioxide (CO
CD-6H 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 exhaust fan control to help
maintain appropriate Carbon Dioxide concentrations in commercial applications. The CD-6H is a low level meter
capable of detecting from 0-5000 ppm of Carbon Dioxide.
Selectable options include:
• Fan relay actuation: selectable at 600, 700, 800, 900, 1000 (default), 1100... 2000... to 5000ppm
• Output: Fan relay, Alarm relay and 4-20mA current loop
• Controls: Digital display (0-5000 ppm), buzzer, fan delay, fan minimum runtime
Installation
• Mounts on a standard 4” x 4” electrical box
• 5 A SPDT fan relay controls valves, louvers or exhaust fans
• 0.5 A N.O. or N.C alarm relay connects to warning devices or control panels
• 4-20mA current loop - compatible with the Macurco DVP-120 Control Panel
• Factory calibrated
2) detector, controller and transducer. The
Other Features
• Supervised system design: detector problem will cause the fan & alarm relay to activate
• Self calibrating, optional gas test kit allows the CD-6H to be field tested
• Listed to UL 61010-1, CAN/CSA C22.2 by ETL
Manufactured by Aerionics, Inc. Sioux Falls, SD – Phone: 1-877-367-7891 – Email: info@aerionicsinc.com – www.macurco.com
CD-6H Specifications
• Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC
• Current (normal) @ 24 VDC: 75 mA in alarm, 53 mA fan relay on and 30 mA stand by
• Current (max) @ 24 VDC:126 mA in alarm, 108 mA with fan on and 85 mA standby
• Shipping Weight: 1 pound (0.45 kg)
• Size: 4 1/2 x 4 x 2 1/8 in. (11.4 x 10.2 x 5.4 cm)
• Color: White or dark gray
• Connections: plugs/terminals
• Mounting box: (not included) 4x4 electrical
• Current Loop, 4-20 mA for 0-2,000 ppm CO
2
Optional housing
and label
• 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...4000 (default)... to 5000 ppm
• 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), 1100, 1200, 1300, 1400, 1500... to 5000ppm
• 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
• Operating Environment: 32°F to 122°F (0°C to 50°C). 10 to 90% RH non-condensing
CD-6H Rear View
Location
2 is heavier than air. Mounting height will be dependent on the application. For applications with CO2 tanks
CO
mount about one foot above the floor. For Indoor Air Quality mount detector at breathing level, ~ 5 feet (1.5 meters)
above the floor. Mount on a wall or column in a central area where the air gets refreshed on a regular basis. The
unit typically covers up to about 5,000 sq.ft. (465 square meters). Additional detectors may be needed near any
areas where people work or where the air is stagnant. The CD-6H mounts on a 4x4 electrical box supplied by the
contractor. Do not install the CD-6H inside another box unless it has good air flow through it. Do NOT mount the
CD-6H where the normal temperature is below 32°F or exceeds 122°F (below 0°C or above 50°C).
TYPICAL CONNECTION OF CD-6H
Alarm Control Panel
Auxiliary functions
Made in the USA
such as dialers.
N.O. or N.C.
initiating circuit
12 or 24 V power
CD-6H
+
4-20 mA
-
Loop
ALARM
RELAY
SPDT fan
N.C.
POWER
AC or DC
12 or 24 V
N.O.
A
B
N.O.
No Polarity
© Aerionics 2018. All rights reserved.
Macurco is a trademark of Aerionics, Inc.
battery backed up
Made in the U.S.A. with US and imported materials
RELAY
COM
TYPICAL COVERAGE 5,000 SQUARE FEET
RELAY
Coil
N.C.
12 or
24 V
coil
Exhaust
Fan
MAIN FAN
POWER
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