Brasch GDCP-Touch Manual de usuario
GDCP-Touch
Installation / Operation Manual
Brasch Environmental Technologies, LLC
40 Long Road, Suite 0
Chesterfield, Missouri 63005
3 4-29 -0440
www.braschenvtech.com
Table of Contents
Introduction...................................................................................................................................5
General Description..................................................................................................................5
Features and Benefits..............................................................................................................6
Technical Specifications................................................................................................................7
Product Specifications..............................................................................................................7
Target Gas Specifications.........................................................................................................8
Carbon Monoxide.................................................................................................................8
Nitrogen Dioxide...................................................................................................................8
Operation Safety Notice................................................................................................................9
Types of Notices.......................................................................................................................9
Quick Start Guide....................................................................................................................... 0
Step – Mounting.................................................................................................................. 0
Step 2 – Input Wiring.............................................................................................................. 0
Step 3 – Remote Transmitter Wiring......................................................................................
Step 4 – Relay Wiring.............................................................................................................
Step 5 – External Alarms........................................................................................................ 2
Step 6 – Applying Power........................................................................................................ 2
Step 7 – Testing the System................................................................................................... 2
Installation................................................................................................................................... 3
Mounting the Control Panel.................................................................................................... 3
Mounting the Transmitters...................................................................................................... 3
Connecting the Power Supply................................................................................................ 5
Connecting the Remote Transmitters..................................................................................... 6
Connecting the Ventilation System......................................................................................... 7
Connecting the External Alarm............................................................................................... 8
Connecting the Voltage or Current Proportional Output........................................................ 8
Applying Power For the First Time......................................................................................... 8
Performing a System Test...................................................................................................... 9
Typical Installation Diagrams..................................................................................................20
Operation....................................................................................................................................23
How the Transmitter Senses the Target Gas.........................................................................23
How the Panel Controls the Ventilation Equipment...............................................................23
Sensors..............................................................................................................................23
Relays................................................................................................................................23
Zones..................................................................................................................................24
Overrides............................................................................................................................24
Analog Output....................................................................................................................24
Modbus Output...................................................................................................................24
BACnet IP Output...............................................................................................................24
Navigating the User Interface.................................................................................................25
Home Screen.....................................................................................................................25
Zone Screen.......................................................................................................................26
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Relay Screen......................................................................................................................26
Passcode Entry Screen......................................................................................................27
Settings Menu....................................................................................................................27
Factory Default Settings.........................................................................................................28
Adjusting the Hardware Settings............................................................................................29
Changing the Sensor Address...........................................................................................29
Changing the Relay Board Address...................................................................................29
Changing the Analog Output Scale....................................................................................29
Adjusting the Software Settings.............................................................................................30
Adding/Removing Sensors.................................................................................................30
Adding/Removing Relays...................................................................................................30
Adding/Removing Zones....................................................................................................3
Adjusting the Setpoints......................................................................................................3
Adjusting the Delays..........................................................................................................32
Adjusting the Activation Type.............................................................................................32
Adjusting the Zone Display Type........................................................................................33
Assigning Sensors.............................................................................................................33
Assigning Relays................................................................................................................34
Assigning Analog Outputs..................................................................................................34
Changing Relay Levels......................................................................................................35
Setting Manual Overrides...................................................................................................36
Setting Automatic Overrides...............................................................................................37
Changing the Date and Time.............................................................................................37
Configuring BACnet...........................................................................................................38
Performing a Reset............................................................................................................38
Using the Analog Outputs.......................................................................................................39
Obtaining the Best Operation.................................................................................................40
Carbon Monoxide and/or Nitrogen Dioxide Transmitters...................................................40
Maintenance...............................................................................................................................4
Testing the Response to the Target Gas................................................................................4
Carbon Monoxide and/or Nitrogen Dioxide Transmitters...................................................4
Replacing the Sensor.............................................................................................................42
Suggested Repair Parts.........................................................................................................43
Troubleshooting..........................................................................................................................44
Error Messages......................................................................................................................44
Relay # – Manual Override Active......................................................................................44
Sensor # Communication Loss..........................................................................................44
Sensor # – Calibration Expired..........................................................................................44
Sensor # End of Life – Please Replace.............................................................................44
Sensor # Sensor Missing...................................................................................................45
Sensor # Calibration Invalid...............................................................................................45
Relay Board # Communication Loss..................................................................................45
Insert SD Card....................................................................................................................45
SD Write Error – Replace SD Card....................................................................................45
Checking and Replacing the Battery......................................................................................46
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Checking and Replacing Fuses..............................................................................................46
Common Installation/Operation Mistakes..............................................................................47
Ventilation Components Connected to the Wrong Relays.................................................47
Relay Levels Set Incorrectly...............................................................................................47
Improper Communication Wiring.......................................................................................47
Setpoint Level Set at Wrong Concentration.......................................................................47
Delay Period Set Incorrectly...............................................................................................48
Setting the Proportional Output Incorrectly........................................................................48
Bias/Termination Switches in the Wrong Position..............................................................48
Relay Activation Type Set Incorrectly.................................................................................49
Panel Not Grounded..........................................................................................................49
Transmitter Mounted in an Unsatisfactory Location..........................................................49
Limited Warranty.........................................................................................................................50
Warranty Statement...........................................................................................................50
Service and Repair Procedures.........................................................................................50
Appendix.....................................................................................................................................5
Models and Descriptions........................................................................................................5
Transmitter Model and Description....................................................................................5
Accessory Model Number and Description........................................................................5
Figures and Diagrams............................................................................................................52
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Introduction
General Description
The Brasch Environmental Technologies GDCP-Touch Gas Detector Control Panel is designed
to function as a complete ventilation control system. These systems can be as simple as a
panel and one transmitter controlling one ventilation fan, or as complex as a panel with 28
sensors controlling 32 zones worth of ventilation equipment.
The control panel itself consists of a touchscreen display, a relay control board, and digital
control circuitry. The panel monitors the signal from the transmitters, compares the signal to
preset values, and controls relay contacts based upon the comparison. These relay contacts
then provide signals that control ventilation components such as exhaust fans, louvers, and
dampers. The touchscreen provides a visual indication of the system’s operational condition
along with an intuitive interface for configuring the entire system. A linear proportional output is
also included for communication with a building management system (BMS), direct digital
controls system (DDCS), or variable-frequency drive (VFD).
The sensors used in the remote transmitters operate on the electrochemical principle and are
able to detect carbon monoxide or nitrogen dioxide. A current is produced when the target gas
reacts chemically with an electrode inside the sensor. This small current is converted to an
analog voltage, amplified, and converted to a digital signal. This signal is proportional to the
gas concentration present at the sensor and is shown on the display. After comparing the
digital signal to preset values, the panel updates the display and relays.
The GDCP-Touch housing has a NEMA 4X rating and is supplied with knockouts so that the
control panel can mount directly to a standard four inch conduit box. A hinged cover secured
by two screws makes it easy to gain access to the touchscreen for system configuration. A
secondary, interior hinge affords access to the relay board, allowing power, communication,
and relay connections to be made.
The GDCP-Touch can also accept additional relay boards in the form of GDCP-
ExpansionPacks. These provide four more relays for added control along with another analog
output and a signal repeater to extend the range and sensor capacity. GDCP-PowerPacks
may be added to convert AC line voltage to the low voltage required to power the control
panel, transmitters, and relay boards.
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Rev . – May 8, 202 5
Features and Benefits
•Limitless Possibilities
◦Fully Configurable Zones, Relays, Setpoints, Delays, and Outputs
◦Scalable System Size via Relay Expansion Packs
•Increased Control
◦On-Demand Ventilation Control by Gas Concentration, Timer Schedule, or User
Input
◦7” Full-Color LCD Touch Screen
•Maximum Detection
◦Monitors up to 28 CO and/or NO2 Sensors
◦Each Sensor Covers up to 9,000 sq. ft.
•Enhanced Durability
◦NEMA 4X Water and Dust Resistance
•Intelligent Connectivity
◦BACnet IP and Modbus RTU Communication for BMS Interfacing
•Simplified Installation
◦Customized Factory Programming and Configuration for Every Job
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Rev . – May 8, 202 6
Technical Specifications
Product Specifications
Input Power 24 VAC, 50/60 Hz, 0.75 A
Optional: 20 VAC, 50/60 Hz, 0.3 A via GDCP-PowerPack
Installation Category II (local level, over-voltage transients less than 500V)
Storage Temperature -50°C to 20°C (-58°F to 248°F)
Operating Temperature -20°C to 70°C (-4°F to 58°F)
Humidity 0% to 90% (non-condensing)
Ventilation Control Relays 25 VAC, 50/60 Hz, 5 A resistive, 250 VA inductive
Relay Capacity 4 internal, up to 32 total relays via GDCP-ExpansionPacks
Sensor Capacity Up to 30 remote sensors
Optional: Up to 28 remote sensors via GDCP-ExpansionPacks
Zone Capacity Up to 4 zones
Optional: Up to 32 zones via GDCP-ExpansionPacks
Internal Alarm 70 dB @ 0 cm, 2.9 kHz piezoelectric element
Display 7.0” LCD, 024 x 600, 5-point capacitive touch
Analog Outputs User-selectable 4-20 mA, 0.2- VDC, -5 VDC, or 2- 0 VDC
Digital Outputs BACnet IP, Modbus RTU
Alert Levels 4 levels, fully adjustable
Delay Times 0 to 599 minutes, separate settings for entrance and exit
Dimensions 8. 5” W x 9.93” H x 2.70” D (2 cm W x 25 cm H x 7 cm D)
Weight 5.0 lbs (2.27 kg)
Housing Gray, NEMA 4X, fiberglass/polycarbonate
Compliance Pending
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Target Gas Specifications
Remote transmitters for this control panel are available for monitoring carbon monoxide and/or
nitrogen dioxide as target gases. Regulatory agencies have determined the threshold
concentrations at which the gases become dangerous. Brasch Environmental Technologies,
LLC has designed their transmitters so that the measurement ranges for each target gas meet
the agencies’ requirements. Each target gas, for which Brasch currently produces a
transmitter, is listed below along with the relevant concentration specifications.
Carbon Monoxide
Full Scale Span: 200 PPM
Resolution: PPM
Minimum Accuracy*: ± 0% or 6 PPM
Relay Setpoints 0-200 PPM (in increments of .0 PPM)
Expected Lifespan 0 years
Recommended
Recalibration Time 2 years
Nitrogen Dioxide
Full Scale Span: 0 PPM
Resolution: 0. PPM
Minimum Accuracy*: ± 5% or 0.8 PPM
Relay Setpoints 0- 0 PPM (in increments of 0. PPM)
Expected Lifespan 0 years
Recommended
Recalibration Time 2 years
*Allowable tolerance for accuracy and repeatability criteria as defined in Annex A, Item 2 of ANSI/ISA 92.00.0 -20 0 (R20 5)
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Rev . – May 8, 202 8
Operation Safet Notice
Certain procedures and operations detailed in this manual require that specific precautions be
taken prior to beginning the procedure or operation. When precautions are required, a notice
will be printed in an appropriate location in the manual. The user is urged to read and
understand all such notices.
T pes of Notices
Three types of notices may be used in this manual to describe the severity of the situation
encountered.
WARNING: This notice indicates that conditions exist that could cause personal injury
or loss of life.
CAUTION:Conditions exist that could cause damage to the equipment or other
property.
Note: Special consideration should be given to the procedure or operation,
otherwise an unexpected operational result could occur.
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Rev . – May 8, 202 9
Quick Start Guide
Please read this entire manual before attempting to install and operate this control panel. This
guide is only intended to provide the basic steps necessary for installation and operation.
Each step will reference the portion of the manual where more complete information can be
obtained.
Step 1 – Mounting
Determine the location for mounting your panel and transmitters. The locations may be
indicated on the architectural drawing. Also, the owner or designer of the facility may be
consulted. Mounting guidelines can be found on page 3 of this manual.
Step 2 – Input Wiring
Provide a dedicated circuit at the required 24 VAC operating voltage at each panel mounting
location. Follow all national and local wiring codes. A conductor connected to earth ground
should also be provided. The circuit must include a disconnect switch located within easy
reach of the panel.
Ensure that the step-down transformer provides the correct secondary voltage and has the
necessary volt-amp rating to power each component in the system. Each control panel
requires 0.75 VA, each transmitter requires 2.4 VA, and each expansion pack requires 0.4 VA.
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Rev . – May 8, 202 0
WARNING
This control panel may require the use of voltage levels high enough to cause fatal injuries.
Proper procedures must be followed any time work is performed on this unit.
Only qualified personnel should attempt to install, maintain, or service this equipment.
CAUTION
Operating these devices with the incorrect voltage and power requirements can cause
internal electrical components to overheat and fail. Operation with the wrong power
requirement will void the manufacturer’s warranty and the installer will be responsible for any
damage that occurs.
Contact Brasch Environmental Technologies, LLC before connecting power to the control
panel or transmitters if you are unsure of the correct power requirement.
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