BA/CO/V-BB installation manual
Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
rev. 07/17/15
34612_ins_CO_V_BB
Product Identification and Overview
BAPI’s Carbon Monoxide Sensor offers enhanced, long life
electrochemical sensing with outstanding accuracy at low
concentrations. The sensor has field selectable ranges of 0 to 100 ppm,
0 to 200 ppm, 0 to 300 ppm and 0 to 500 ppm. The sensor provides
linear outputs of 0 to 5 VDC, 1 to 5VDC, 0 to 10VDC, 2 to 10 VDC or
3-wire 4 to 20 mA. A backlit LCD display shows the CO measurement
in ppm. The backlight is turned on for 10 seconds after any button
touch. The factory calibrated sensor module is field replaceable.
Two independent SPDT alarm contacts switch at field selectable CO
concentrations of 25ppm, 35ppm, 50ppm, 100ppm, and 200 ppm. The
status LED is green when the measured CO is below the lowest relay
setpoint, red whenever an alarm relay is on or the sensor module is
removed, and yellow when the transmitter is performing a self-test or
the sensor module needs replacement.
An alarm timer holds the output relays on for a fixed time after the CO
level has fallen below 80% of setpoint. This allows additional fan run
time to be sure that the CO has been purged. Field selectable times of
zero, one, five and ten minutes are provided.
Fig. 1:
Carbon Monoxide Transmitter in a
Ventilated BAPI-Box
The sensor element is tested daily for proper operation. When the sensor element reaches its end of life, both
relays turn on, the output is set to maximum and the status LED flashes yellow.
Mounting
Mount the BAPI Carbon Monoxide sensor/transmitter on a solid, non-vibrating
surface or structure 3 to 5 feet above floor level. Mount in a horizontal
orientation with the enclosure hinge at the top as shown in Figures 3 and 4.
Failure to do so may degrade the life of the sensor element.
Do not mount near supply or return diffusers. Refer to local codes for further
sensor/transmitter installation information. See BAPI’s application note
for further mounting recommendations. Go to www.bapihvac.com, select
RESOURCE LIBRARY from the banner, Click on Application Notes, Look
down the page for the heading Air Quality Related, and chose the link titled
Coverage Area and Mounting Recommendations for BAPI Indoor Air Quality
Sensors.
1. BAPI recommends #10 (M5) screws
of a type and length suitable for the
mounting surface. Four mounting
screws keeps the box from twisting,
twisting may prevent the latch from
operating properly. A pilot-hole makes
mounting easier. Use the enclosure
mounting feet to mark the pilot-hole
locations.
Fig. 2: Drill Template, center 7/8”
hole for rear conduit entry
2. Snug up the screws so that the foam
backing is depressed but do not overtighten or strip the screw threads.
3. Place the provided #6 screws into the
holes on each site of the lid latch to
make the cover tamper resistant.
Fig. 3: Screw the unit in place
Fig. 4: Holes for tamper
resistant screws
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
rev. 07/17/15
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Termination
BAPI recommends using twisted pair of at least 22AWG and sealant filled connectors for all wire connections. Larger
gauge wire may be required for long runs. All wiring must comply with the National Electric Code (NEC) and local
codes. Remove the plug from the conduit opening you wish to use. The field wiring terminals are on a board in the
base of the unit. A legend, describing the function of each terminal, is printed on the circuit card in the lid. (See Fig. 5)
BAPI recommends wiring the product with power disconnected. Proper supply voltage, polarity and wiring
connections are important to a successful installation. Not observing these recommendations may damage the
product and void the warranty.
WIRING TERMINALS
VIN – Input Power
18 to 28 VAC, 7.2 VA Max
18 to 40 VDC, 180 mA Max.
GROUND:
Power and Analog Output Ground
I/V OUT
Three wire voltage or current signal
RELAYS
Relay contacts are galvanically isolated. They are not
connected to each other, or to circuit power or ground
in the carbon monoxide transmitter.
N.O. – Normally Open Contact
COM – Common Contact
N.C. – Normally Closed Contact
Fig. 5: Field
Wiring Terminals
NOTE: The connectors that plug into the jacks on the board use a rising block screw terminal to hold the wires. If the
block is in a partially up position, the wire may be inserted under the block and the wire will not be held when the screw
is tightened. To avoid improper wiring, turn the male connector screws counterclockwise until the block is below the wire
opening before inserting the wire. Lightly tug on each wire after tightening to verify proper termination.
Keeping the Enclosure Air Tight After Termination
For the sensor to work correctly, the wiring entrance must remain air tight. If the CO transmitter is mounted to
a hollow wall and wired through its back, or wired with conduit, it is possible that a draft of clean air may fill the
enclosure through the wiring opening. This draft may prevent the unit from measuring ambient Carbon Monoxide.
BAPI recommends either a liquid-tight fitting or plugging the conduit at the enclosure.
• Liquid-Tight Fitting – BAPI’s Liquid-Tight Fitting (BA/LTF) allows wire cables
of 0.1 to 0.3 inch outside diameter to enter the box. Tightening the collar onto the
wire cable keeps the wiring entrance air tight.
• Conduit – Included with the Carbon Monoxide transmitter is a foam plug to seal
the ½ inch EMT. Place the wires into the plug as shown in Fig. 6 and then insert
the plug into the conduit sealing the conduit.
Fig. 6:
Wires Through Foam Plug
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
rev. 07/17/15
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Relay Load Termination
The Alarm Relays may be used to switch a load on or off. Fig. 7 shows a circuit that may be used to switch on a
load under alarm conditions. Fig. 8 shows a circuit that may be used to switch off a load under alarm conditions.
For clarity only Alarm Relay 1 is shown, Alarm Relay 2 may be used in the same way.
Fig. 7:
Turn “On”
a load
under alarm
conditions
Fig. 8:
Turn “Off”
a load
under alarm
conditions
Fig. 9 shows how two or more Carbon Monoxide Transmitters may be interconnected to switch a load. This example
shows how to turn on a load under alarm conditions. Similar circuitry may be used to turn off a load under alarm
conditions. Fig. 9 connects together the Normally Open terminals of Alarm Relay #1 in both units and connects them
to the load. Fig. 9 also connects together the Common terminals of Alarm Relay #1 in both units and then connects
them to the load’s power. This wiring circuit will drive the load whenever any one of the Carbon Monoxide Transmitters is in an alarm condition. Note: Be sure to only connect similar terminals from each unit (Normally Open terminal
to Normally Open terminal, etc.). Cross connecting any of the terminals (Normally Closed to Common, etc.) may
damage the units and may void the warranty.
For clarity only Alarm Relay 1 is shown in the example below. Alarm Relay 2 may be used in the same way.
Fig. 9:
Turn “On” a
load when
either unit
enters an alarm
condition
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
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Relay Load Termination continued...
Some circuits require a switched ground to operate, such as audible alarms, visual alarms, or large AC motor controllers. Fig. 10 shows how to apply ground under an alarm condition. Fig. 11 shows how to remove ground under
an alarm condition. For clarity only Alarm Relay 1 is shown. Alarm Relay 2 may be used in the same way.
Fig. 10:
Applying
ground
under alarm
conditions
Fig. 11:
Removing
ground
under alarm
conditions
Power Up
During the first 60 seconds after applying power, the Carbon Monoxide Transmitter performs the following functions:
• Front panel capacitive button test;
• Displays the transmitter’s software version number;
• Displays the transmitter’s serial number;
• Displays the transmitter’s run time;
• Displays the CO Module’s software version number;
• Displays the CO Module’s serial number;
• Displays the CO Module’s run time;
• Performs a CO Module self-test;
When the CO Module self-test is complete, the transmitter is operational.
Operation
The eight buttons
on the face of the
unit sense the user’s
fingertip when pressed
against the plastic
cover. The buttons
allow the user to
review or select
unit configuration
parameters. The top
line of the display
continues to show
the CO measurement
when reviewing or
selecting parameters.
Parameter Button Function
Review or select Carbon Monoxide measurement range used for analog output
Review or select analog output range
Review or select display on or display off
View hidden values, verify edit mode, save edited configuration parameters, or end configuration parameter edit
Review or select CO concentration to enable Alarm 1 relay
Review or select number of minutes that Alarm 1 relay stays on after CO dissipates
Review or select CO concentration to enable Alarm 2 relay
Review or select number of minutes that Alarm 2 relay stays on after CO dissipates
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
rev. 07/17/15
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Operation continued...
Display On and Display Off Modes
The top line of the display shows the CO measurement when the Display Mode is set to “On” . If the Display Mode
is set to “Off,” the top line of the display shows the word “On” rather than the CO measurement. If the CO measurement is below Alarm 1 or Alarm 2 levels, the LED will be green.
Fig. 12:
Display During
Normal Operation
(Reading is below
CO alarm value)
Display “Off” Mode
Display “On” Mode
Displaying the CO Measurement, Analog Output Range and Analog Output Value
Touching the Enter button displays the Current Reading, the Analog Output Range and Analog Output Value for 10
seconds. The current reading is replaced by the word “On” if the display is set to “Off”.
4 to 20 mA Output Mode
(Display set to “On”)
0 to 5 Volt Output Mode
(Display set to “On”)
0 to 5 Volt Output Mode
(Display set to “Off”)
Fig. 13: Display showing the Current Reading, the Analog Output Range and Analog Output Value
CO Sensor Failure Display
The CO sensor element is tested for proper operation daily. If
the sensor fails:
• The top line of the display displays “Replace Sensor,”
• The analog output is set to 100% of range
• Both relays turn on,
• The LED flashes yellow.
Note: The sensor failure display is the same whether the
display is set to “On” or “Off”.
Fig. 14: CO Sensor Failure
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
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Operation continued...
Alarm Condition 1 Display
If the CO measurement exceeds the
Alarm 1 setpoint:
• The CO measurement or the word
“On” is displayed on the first line
• The alarm condition is display on
the second line
• The LED will be red
• The backlight flashes
Alarm Condition 1
(Display set to “On”)
Alarm Condition 1
(Display set to “0ff”)
Fig. 15: Display when the measurement exceeds Alarm Condition 1 Setpoint
Alarm Condition 2 Display
If the CO measurement exceeds the
Alarm 2 setpoint;
• The CO measurement or the word
“On” is displayed on the first line
• The alarm condition is displayed on
the second line
• The LED will be red
• The back light flashes
Note: The Alarm 2 Setpoint may be
equal to, greater than or less than the
Alarm 1 Setpoint.
Alarm Condition 2
(Display set to “On”)
Alarm Condition 2
(Display set to “Off”)
Fig. 16: Display when the measurement exceeds Alarm Condition 2 Setpoint
Alarm Condition 1 & 2 Display
If the CO measurement exceeds the
Alarm 1 & 2 setpoint;
• The CO measurement or the word
“On” is displayed on the first line
• The alarm condition 1 and 2 is
displayed on the second line
• The LED will be red
• The back light flashes
Note: The Alarm 2 Setpoint may be
equal to, greater than or less than the
Alarm 1 Setpoint.
Alarm Condition 1 & 2
(Display set to “On”)
Alarm Condition 1 & 2
(Display set to “Off”)
Fig. 17: Display when the measurement exceeds Alarm
Condition 1 & 2 Setpoint
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
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Reviewing Parameter Settings
You can review the parameter settings at any time during normal operation by touching any of the eight buttons on
the face of the unit. The following figures show a typical display when a button is touched. The values will display for
10 seconds and then the display will revert to normal.
CO Range
Output Range (0 to 10 Volts)
Output Range (4 to 20mA)
Display Mode
Alarm 1 Value
Alarm 1 Time
Alarm 2 Value
Alarm 2 Time
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
rev. 07/17/15
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Parameter Setup
If field personnel wish to change any parameter settings, they must remove the tamper resistant screws, open the
cover, and press the switch on the board labeled “Setup.” Follow Fig. 18 below to change parameters.
Fig. 18:
Parameter Setup Flow Chart
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
rev. 07/17/15
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Calibration
Every BAPI Carbon Monoxide Transmitter is factory calibrated. Each unit
is ready for operation after installation and the 60 second start-up time.
BAPI’s factory calibrated CO Module is inexpensive enough to replace,
rather than calibrate with expensive and inconvenient gas tanks,
regulators, and laptop computer. BAPI recommends replacing the
sensor whenever the Replace Sensor alarm is active, every 7 years, or at
the recalibration intervals required by the local jurisdiction.
To replace the CO Module (Fig. 19), follow these steps;
• Remove the taper resistant screws and open the lid
• Unplug the power connector
• For the next two steps, hold the sensor by the body, not the endcaps.
• Remove the CO Module by pulling it straight off the transmitter
• Plug in the new sensor by pushing the sensor board straight into the
transmitter
• Plug in the power connector
• Close the lid until it clicks, remember to replace the tamper resistant
screws
Maintenance
The BA/CO sensor/transmitter unit should be vacuumed clean once a year
or more, depending on the rate of accumulation of any dust or dirt. To
avoid sensor damage, the unit MUST NOT be submerged in any liquids.
Hosing or splashing of the unit with any liquids must also be avoided and
may void the warranty.
Fig. 19:
Inserting or Removing the
Sensor Module
The sensor in the Carbon Monoxide Transmitter typically has a life of over 7
years. When the sensor reaches the end of its useful life, the transmitter will alarm when a replacement is required.
Factory calibrated replacement sensors are available from BAPI.
Specifications
Power
18 to 28 VAC, 7.2 VA Max
18 to 40 VDC, 180 mA Max
Field Selectable Ranges
0 to 100 ppm
0 to 200 ppm
0 to 300 ppm
0 to 500 ppm
Accuracy
<200ppm, ±3% FS, 32 to 122°F (0 to 50°C)
201 to 500 ppm, 5% FS, 50 to 122°F (10 to 50°C)
Alarm Relays
2 Independent, Dry SPDT (Form C)
2 Amps at 24 VAC/DC, Resistive
140 VA Inrush, 48 VA Holding at 24 VAC
Field Wiring Terminals
Pluggable Screw Terminals, 14 to 24 AWG
Alarm Relay Setpoints
25ppm, 35ppm, 50ppm, 100ppm or 200ppm
Alarm Timer
0, 1, 5 & 10 minutes
Field Selectable Analog Outputs
3-wire 4 to 20 mA
0 to 5 VDC, 1 to 5 VDC
0 to 10 VDC, 2 to 10 VDC
Environmental Operation Range
14 to 122°F (-10 to 50°C)
5 to 95% RH Noncondensing
Lifetime:
7 Years Typical
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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Carbon Monoxide Transmitter in a Ventilated BAPI-Box
Installation & Operating Instructions
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Diagnostics
POSSIBLE PROBLEMS:
General troubleshooting
POSSIBLE SOLUTIONS:
- Determine that the input is set up correctly in the controller’s and building
automation software.
- Check wiring for proper termination
- Check for corrosion at either the controller or the sensor. Clean off the corrosion,
re-strip the interconnecting wire and reapply the connection. In extreme cases,
replace the controller, interconnecting wire and/or sensor.
- Label the terminals that the interconnecting wires are connected to at the sensor
end and the controller end. Disconnect the interconnecting wires from the
controller and the sensor. With the interconnecting wires separated at both ends,
measure the resistance from wire-to-wire with a multimeter. The meter should read
greater than 10 Meg-ohms, open or OL depending on the meter you have. Short
the interconnecting wires together at one end. Go to the other end and measure
the resistance from wire-to-wire with a multimeter. The meter should read less than
10 ohms (22 gauge or larger, 250 feet or less). If either test fails, replace the wire.
Unit does not operate
- Cycle power.
- Check power for proper polarity.
- Disconnect the power wires at the controller and measure the voltage coming
from the power source. If the voltage is outside the limits specified on page 1,
troubleshoot the power source. Reconnect power wires to controller when finished
- Disconnect the power wires at the sensor and measure the wires for the same
voltage as at the controller. If the voltage is different from that measured at the
source, troubleshoot the wire. Reconnect power wires to sensor when finished.
- Measure the power at the sensor with the power wires connected to the power
source. If the voltage is outside the limits specified on page 9, call your BAPI
representative.
ADDITIONAL DISPLAY MESSAGES AND INDICATION
Display Message
Module not found
retrying
LED
Indication
Solid Red
Sensor Module is loose or missing. Securely plug in a sensor module
mA Output Fault
Flashing Red
V Output Fault
Replace Sensor
Self-Test
Unit is configured for mA output, but the loop resistance is incorrect.
Troubleshoot connection.
Unit is configured for voltage output, but the output voltage is incorrect.
Flashing Red
Troubleshoot connection
Flashing Yellow Sensor Module failed self-test, replace the sensor module
Solid Yellow
Sensor Module is performing a self-test
Note: If you are experiencing any other problems besides those decribed above, contact your BAPI representative.
Specifications subject to change without notice.
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com
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