Figure 31 Control Board Configuration/Setting; Manual 2100-597G - Bard I30A1DA Installation Instructions Manual

4
ECM Motor Control Cable
To Automation
Controller
5
0-2,000 RPM
= 0-10Vdc
Series CDT Carbon Dioxide and Temperature Transmitters accurately monitor
the CO 2 concentration and temperature in schools, office buildings, and other
indoor environments to help achieve LEED ® certification. For increased sensor
life, a single- beam dual-wavelength non-dispersive infrared (NDIR) sensor is used
Signal Common,
to automatically correct the measurement in both occupied and unoccupied
Aux Common &
buildings against aging effects. The single-beam dual-wavelength sensor
Neutral/Common are
technology provides the highest level of accuracy compared to Automatic Baseline
internally connected
Correction methods which can unintentionally shift the calibration based on CO
levels and barometric pressure conditions. In order to achieve a higher level of
accuracy, the Series CDT includes digital barometric pressure adjustment and the
Class II Power Source
ability to field-calibrate the sensor.
Earth neutral/Common
at transformer
Universal outputs allow users to select the transmitter output to be 4 to 20 mA, 0
for electrical safety.
to 5 VDC or 0 to 10 VDC to work with virtually any building management controller.
An optional relay with user adjustable set points can be used to control exhaust
fans, open actuated windows or dampers, or signal a light or horn.
Evolution Controls Inc.
For applications that require visual indication, the Series CDT can be ordered with
an integral LCD display or the Model A-449 remote LCD display that can plug into
CONFIGURING BARD PART #8403-067
the mini-connector port on the side of the transmitter. The display can be
configured to display temperature only, CO
CO CONTROL for ERV MODULATING
Push buttons are standard on the transmitters for access to the menu structure,
2
but the transmitter can be ordered without the buttons. To prevent tampering, the
CONTROL
action of the buttons can be locked out using an internal jumper selection. Menu
items that can be accessed include: engineering units, relay output set points,
Bard part #8403-067 carbon dioxide and temperature
display configuration, transmitter output scaling, ambient barometric pressure and
transmitters accurately monitor the CO
field calibration of the transmitter.
and temperature in schools, office buildings and
Single beam dual-wavelength sensor advantages:
other indoor environments to help achieve LEED
• Automatically corrects for aging effects in occupied and unoccupied buildings
o Perfect for hospitals and manufacturing plants that are occupied 24 hours per
certification.
day
• Measures actual unfiltered light intensity directly
SPECIFICATIONS
o Eliminates error from incorrect assumptions of gas concentration in theoretical
Range: CO logic assumption methods : 0 to 2000 or 0 to 5000 ppm (depending
2
on model)
Temperature: 32 to 122°F (0 to 50°C).
Accuracy: ±40 ppm + 3% of reading.
Temperature Dependence: ±8 ppm / °C at 1100 ppm.
Non-Linearity: 16 ppm.
Pressure Dependence: 0.13% of reading per mm of Hg.
Response Time: 2 minutes for 99% step change.
Ambient Operating Temperature: 32 to 122°F (0 to 50°C).
Ambient Operating Humidity: 10 to 95% RH (non-
condensing).
Power Requirements: 16 to 35 VDC / 19 to 28 VAC.
Power Consumption: Average: 2 watts; Peak: 3.75 watts.
Sensor: Single beam, dual-wave length NDIR.
Output:
Current: 4 to 20 mA (max 500 Ω);
DWYER INSTRUMENTS, INC.
Voltage: 0 to 5 VDC or 0 to 10 VDC (min 500 Ω);
p.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Relay: SPST NO 2A @ 30 VDC;
RTD or thermistor per r-t curves (depending on model)
Weight: 5.6 oz (158.8 g)
. Connect the ACU+ neutral connection to the earthed lead.
Most automation controllers will power the
Series CDT Carbon Dioxide/Temperature Transmitter
Specifications - Installation and Operating Instructions
Control Board Configuration/Setting
Control Signal
Signal Common
RPM Out
Common
Aux
Power
24Vac/dc
24Vac/dc
Neutral/Common
only or CO and temperature together.
2 2
concentration
2
®
FIGURE 31
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[50.01]
SpECIfICATIONS
Range:
CO : 0 to 2000 or 0 to 5000 ppm (depending on model);
2
Temperature: 32 to 122°F (0 to 50°C).
Accuracy: ±40 ppm + 3% of reading.
Temperature Dependence: ±8 ppm / °C at 1100 ppm.
Non-Linearity: 16 ppm.
pressure Dependence: 0.13% of reading per mm of Hg.
2
Response Time: 2 minutes for 99% step change.
Ambient Operating Temperature: 32 to 122°F (0 to 50°C).
Ambient Operating Humidity: 10 to 95% RH (non-condensing).
power Requirements: 16 to 35 VDC / 19 to 28 VAC.
power Consumption: Average: 2 watts; Peak: 3.75 watts.
Sensor: Single beam, dual-wavelength NDIR.
Output:
Current: 4 to 20 mA (max 500 Ω);
Manual adjust screw. Use when operating in manual mode ("M"
Voltage: 0 to 5 VDC or 0 to 10 VDC (min 500 Ω);
p.3 of 4.
jumper installed) along with the "GREEN SIGNAL LIGHT" to
Relay: SPST NO 2A @ 30 VDC;
adjust to the required CFM of ventilation. CW rotation reduces
RTD or thermistor per r-t curves (depending on model).
the "FLOW INDEX", CCW rotation increases the "FLOW INDEX".
Weight: 5.6 oz (158.8 g).
INSTALLATION
Disconnect power supply before installation to prevent electrical
WARNING
shock and equipment damage.
Make sure all connections are in accordance with the job wiring diagram and in
accordance with national and local electrical codes. Use copper conductors only.
Use electrostatic discharge precautions (e.g., use of wrist straps)
CAUTION
during installation and wiring to prevent equipment damage.
Avoid locations where severe shock or vibration, excessive
CAUTION
moisture or corrosive fumes are present.
CAUTION Do not exceed ratings of this device, permanent damage not
covered by warranty may result.
Upon powering the transmitter, the firmware version will flash on
NOTICE
the display. A warm up period of 30 minutes is required for the
transmitter to adjust to the current CO
NOTICE
Self calibration feature of the transmitter requires exposure to
normal outdoor equivalent carbon dioxide level once every thirty
days.
phone: 219/879-8000
fax: 219/872-9057
Bulletin AQ-CDT
Move jumper pin to "P"
position to allow variable
35/64 ventilation control using 0-10
1-3/16
1-3/16
[13.89]
VDC CO controller [30.20]
[30.20]
2
3x 3/8
[9.53]
1-13/32
[35.72] Board mode pins factory
shipped on "M" pin for On/Off
control scheme using "A" signal
1-53/64
on low voltage control board
[46.43]
"Red" status light (on
when unit has power)
"Green" signal light
continuously indicates the flow
index the blower is producing.
After a pause, the lamp will
flash out long digits which will
indicate the "TENS" count,
which is immediately followed
by short flashes between 1 and
99. For example, a flow index
of 23 would yield two long
flashes and three short flashes.
concentration.
2
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e-mail: info@dwyer-inst.com

Manual 2100-597G

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