Figure 27 Control Board Configuration/Setting; Manual 2100-597G - Bard I30A1DA Installation Instructions Manual

ECM Motor Control Cable
To Automation
Controller
5
0-2,000 RPM
= 0-10Vdc
Signal Common,
Aux Common &
Neutral/Common are
internally connected
Class II Power Source
Earth neutral/Common
at transformer
Series CDT Carbon Dioxide and Temperature Transmitters accurately monitor
for electrical safety.
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
to automatically correct the measurement in both occupied and unoccupied
Evolution Controls Inc.
buildings against aging effects. The single-beam dual-wavelength sensor
technology provides the highest level of accuracy compared to Automatic Baseline
CONFIGURING BARD PART #8403-067
Correction methods which can unintentionally shift the calibration based on CO
levels and barometric pressure conditions. In order to achieve a higher level of
CO CONTROL for CRV MODULATING
accuracy, the Series CDT includes digital barometric pressure adjustment and the 2
CONTROL ability to field-calibrate the sensor.
Universal outputs allow users to select the transmitter output to be 4 to 20 mA, 0
C arbon dioxide and temperature
Bard part #8403-067
to 5 VDC or 0 to 10 VDC to work with virtually any building management controller.
transmitters accurately monitor the CO
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.
and temperature in schools, office buildings and
other indoor environments to help achieve LEED®
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
certification.
the mini-connector port on the side of the transmitter. The display can be
configured to display temperature only, CO
Specifications
Push buttons are standard on the transmitters for access to the menu structure,
but the transmitter can be ordered without the buttons. To prevent tampering, the
Range: CO : 0 to 2000 or 0 to 5000 ppm (depending
action of the buttons can be locked out using an internal jumper selection. Menu
2
items that can be accessed include: engineering units, relay output set points, on model)
display configuration, transmitter output scaling, ambient barometric pressure and
Temperature: 32 to 122°F (0 to 50°C)
field calibration of the transmitter.
Accuracy: ±40 ppm + 3% of reading
Single beam dual-wavelength sensor advantages:
• Automatically corrects for aging effects in occupied and unoccupied buildings
Temperature Dependence: ±8 ppm/°C at 1100 ppm
o Perfect for hospitals and manufacturing plants that are occupied 24 hours per
day
Non-Linearity: 16 ppm
• Measures actual unfiltered light intensity directly
o Eliminates error from incorrect assumptions of gas concentration in theoretical
logic assumption methods
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
Power Requirements: 16 to 35 VDC/19 to 28 VAC
Power Consumption: Average: 2 watts;
Peak: 3.75 watts

Manual 2100-597G

Page 46 of 68
DWYER INSTRUMENTS, INC.
4
. Connect the ACU+ neutral connection to the earthed lead.
Most automation controllers will power the
Control Board Configuration/Setting
Series CDT Carbon Dioxide/Temperature Transmitter
Control Signal
Specifications - Installation and Operating Instructions
Signal Common
RPM Out
Common
Aux
Power
24Vac/dc
24Vac/dc
Neutral/Common
concentration
2
only or CO and temperature together.
2 2
(non-condensing)
FIGURE 27
4-31/64
[113.9]
3-13/32
[86.52]
1-13/32
[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).
Manual adjust screw. Use when operating in manual mode ("M"
Accuracy: ±40 ppm + 3% of reading.
p.3 of 4.
jumper installed) along with the "GREEN SIGNAL LIGHT" to
Temperature Dependence: ±8 ppm / °C at 1100 ppm.
adjust to the required CFM of ventilation. CW rotation reduces the
Non-Linearity: 16 ppm.
"FLOW INDEX", CCW rotation increases the "FLOW INDEX".
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-wave length NDIR
Sensor: Single beam, dual-wavelength NDIR.
Output:
Output: Current: 4 to 20 mA (max 500 Ω)
Current: 4 to 20 mA (max 500 Ω);
Voltage: 0 to 5 VDC or 0 to 10 VDC (min 500 Ω); Voltage: 0 to 5 VDC or 0 to 10 VDC
Relay: SPST NO 2A @ 30 VDC;
(min 500 Ω)
RTD or thermistor per r-t curves (depending on model).
Relay: SPST NO 2A @ 30 VDC
Weight: 5.6 oz (158.8 g).
RTD or thermistor per r-t curves
(depending on model)
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
Move jumper pin to "P"
position to allow variable
ventilation control using 0-10
VDC CO controller
2
Bulletin AQ-CDT
Board mode pins factory
shipped on "M" pin for On/Off
control scheme using "A" signal
on low voltage control board
35/64
1-3/16
1-3/16
[13.89]
[30.20]
[30.20]
"Red" status light (on
3x 3/8
[9.53]
when unit has power)
1-13/32
[35.72]
"Green" signal light continuously
indicates the flow index the
blower is producing. After a
1-53/64
[46.43]
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
www.dwyer-inst.com
7/8
[22.35]
4x 3/16
[4.76]