Kele KGD-DMK-1 Gas and Specialty Sensors Instruction Manual
- September 13, 2024
- Kele
Table of Contents
Kele KGD-DMK-1 Gas and Specialty Sensors
IMPORTANT : Keep these user instructions for reference.
GENERAL SAFETY INFORMATION
WARNING
- Each person using this equipment must read and understand the information in this user manual before use. Use of this equipment by untrained or unqualified persons or use that is not in accordance with this user manual, may adversely affect product performance.
- Use only for monitoring the gas which the sensor and monitor is designed to detect. Failure to do so may result in exposures to gases not detectable and cause serious injury or death. For proper use, see supervisor or user manual, or contact Technical Support at 877.826.9045.
- This detector helps monitor for the presence and concentration level of a certain specified airborne gas. Misuse may produce an inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure and cause serious injury or death. For proper use, see supervisor or User manual, or contact Technical Support at 877.826.9045.
- The KGD-DMK-1 is specifically designed for use with Kele gas detectors. After the KGD- DMK-1 is installed and tested, refer to the appropriate Kele gas detectors User manual for installing and testing the detector to be installed. For additional support, contact Technical Support at 877.826.9045.
- During installation, a Pressure Differential test must be performed on the KGD-DMK-1 to ensure proper installation and function of the device.
APPLICATION
The Kele KGD-DMK-1 is an air tight enclosure that provides a means to mount
any Kele gas detector to an air duct. By duct mounting a Kele gas detector it
can monitor the air inside of the duct and provide early detection of carbon
monoxide or other gases moving through the HVAC system. The KGD-DMK-1 used
with Kele gas detectors can provide automatic control to prevent recirculation
of these gases into additional areas by the air handling systems, fans and
blowers in commercial and residential applications.
Features
- Provides detection and monitoring of gas concentrations in ventilation ducts
- Clear cover allows view of detector, displays and status lights
- PC – Polycarbonate housing
- Injection Molding Grade, Flame Retardant, UV Stabilized
- UL Outdoor Exposure Listed
Included with the KGD-DMK-1
- Enclosure with cover, gasket and screws
- Standoffs – hex aluminum
- Machine screws – Phillips head
- Strain relief/seal for wiring exit hole
- Nut for strain relief
- Sheet metal mounting screws
- Foam compression seals
- A full-size drill hole position template
Not included with the KGD-DMK-1
- Kele Gas Detector
- Input sampling tube: available in various lengths from HVAC and Security distributors
- Single gang type detectors, CM-E1 and GD-2B, will need a 4″ single gang mud-ring
Specifications
- Size: 6 1/4 x 6 1/4 x 3 1/2 inches (15.9 x 15.9 x 8.9 cm)
- Exhaust Tube: EMT, 1/2″ (1.3 cm) diameter 6 1/2″ length (16.5 cm)
- Setscrew Adapters: EMT, 1/2″ (1.3 cm)
- Shipping Weight: 1.5 pounds (0.68 kg)
INSTALLATION INSTRUCTIONS
Location
The KGD-DMK-1 and gas detector should be mounted on air ducts downstream from
any duct openings, deflection plates, sharp bends or branch connections. If it
is not physically possible to locate the detector accordingly, it is best
positioned as far from the opening, bend or deflection plates as possible.
Supply duct gas detector installation should be downstream of fans, filters,
chillers, heaters and humidifiers. Return duct gas detectors should be located
at return air opening within the compartment, where the air exits each
compartment or in the duct system before air enters the return air system
common to more than one compartment.
Assembly Instructions
- Remove the clear cover from the enclosure and remove the contents.
- Insert conduit setscrew adapters into the two large holes in the back of the enclosure. Install the nuts for setscrew adapters inside the enclosure and tighten.
- Insert four (4) machine screws through the back of enclosure. Secure them with the four (4) standoffs inside the enclosure and tighten.
- Insert the Strain Relief/Seal into the remaining large hole on the bottom of the enclosure. Install the nut for strain relief/seal inside the enclosure and tighten
- Remove the adhesive cover on one side of foam seals. Place them over the conduit setscrew adapters on the outside of the enclosure as pictured.
- Install the exhaust tube into the “downstream” setscrew adapter with the open end of the 45-degree cut facing downstream.
- Install the appropriately sized sampling tube (not provided) into the “upstream” setscrew adapter with the ports facing upstream.
Important
- The sampling tube MUST extend at least 2/3 into the width of the duct.
- The end of the sampling tube that is in the duct must be closed or capped to ensure appropriate air flow through the KGD-DMK-1 and to the detector.
- Tube support is required in all instances where the tube length is greater than three feet.
- The sampling and exhaust tubes must be installed in the proper orientation to ensure appropriate air flow through the KGD-DMK-1 and to the detector.
Installation
- Place the enclosed template on the duct at the desired mounting spot. Mark the six (6) holes to be drilled.
- Drill two (2) large and four (4) small holes in the duct you want to mount the unit on using the template provided. The two large holes (1 ½”) are for the sampling and exhaust tubes. The four small holes (1/16″) are starter holes for the sheet metal mounting screws. Ensure that the intake and exhaust tube holes are large enough to allow all the setscrew adapters to fit.
- Place each of the four (4) sheet metal mounting screws in one of the shouldered holes at the corners of the enclosure base.
- Place the enclosure onto the duct to test for proper hole alignment. Place the unit against the duct in its intended position.
- Fasten the enclosure to the duct by installing the four (4) sheet metal screws.
Pressure Differential Testing
WARNING A pressure differential test is required to ensure proper
operation of the KGD-DMK-1. This test requires the use of an Analog or Digital
Manometer. The differential pressure should measure at least 0.01 inches of
water and no more than 1.11 inches of water.
- Follow the manometer instruction manual for proper setup.
- Verify and note the current manometer reading and adjust if necessary.
- With the KGD-DMK-1 cover removed, plug the manometer, positive (+) end or HIGH end into the sampling tube end and the Negative (-) or LOW end into the exhaust tube end.
- To verify sufficient pressure differential, turn the air handler on and use the manometer to measure the differential pressure between the two sampling tubes. The differential pressure should measure at least 0.01 inches of water and no more than 1.11 inches of water.
Check the following if the differential pressure measurements are outside of the specified range:
- Ensure that the air velocity in the duct is within the specified range. If necessary, use a velocity meter to check the air velocity in the duct.
- Verify the sampling tube is installed with the air inlet holes facing into the airflow. Note that the sampling tube and exhaust tube can be mounted in either housing connection if the exhaust tube is mounted downstream from the sampling tube.
- Verify that the end cap is installed at the end of the sampling tube.
- Verify that the sampling tube extends to a minimum of 2/3 duct width.
- Verify that the KGD-DMK-1 is properly sealed to the duct.
Mounting the Detector
-
Run the wiring through the strain relief. Twist the outer cap of the strain relief clockwise to compress the gasket material around the wiring.
-
Connect the wiring according to the instructions provided for the detector.
-
Install the gas detector onto the top of the four (4) standoffs. Secure it in place using the four (4) remaining machine screws.
Important : Be sure that there is a good seal between the KGD-DMK-1 and the duct surface around the sampling and exhaust tubes to ensure appropriate air flow through the KGD-DMK-1 and to the detector. -
Test the installed detector as described in the detector’s User Manual.
-
Replace the cover and tighten the cover screws.
MAINTENANCE
The Kele KGD-DMK-1 requires minimal maintenance. Ensure that the vented
sampling inlets remain unobstructed and is free of debris to maintain good air
flow through the enclosure. Please refer to the specific detector User
Instructions for maintenance requirements, installation information and
warnings.
Cleaning of the external surfaces is best carried out using a damp cloth with
a mild detergent or soap. Use a vacuum cleaner with soft brush to remove dust
or contamination under the cover and to clean the vented sampling inlets.
WARNING
- Do not blow out the sensor with compressed air. Using compressed air may damage the sensor causing the sensor to not respond to the target gas.
- High voltage terminals (120/240 VAC) are located within the Kele KGD-12 series detectors, presenting a hazard to service technicians. Only qualified technicians should open the detector case and service the internal circuits. Ensure power is de-energized from the detector relays prior to servicing the unit. Failure to do so may result in electrical shock.
CAUTION Avoid using caustic, abrasive cleaners and other organic solvents. These materials may scratch surfaces and permanently damage the display window, labels, sensor or instrument case.
KELE GAS DETECTION PRODUCT LIMITED WARRANTY
Kele warrants the KGD-DMK-1 Duct Mount Kit will be free from defective materials and workmanship for a period of two (2) years from the date of manufacture, provided it is maintained and used in accordance with Kele instructions and/or recommendations. If any component becomes defective during the warranty period, it will be replaced or repaired free of charge, if the unit is returned in accordance with the instructions below. This warranty does not apply to units that have been altered or had repair attempted, or that have been subjected to abuse, accidental or otherwise. The above warranty is in lieu of all other express warranties, obligations or liabilities. THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED TO A PERIOD OF TWO (2) YEARS FROM THE PURCHASE DATE. Kele shall not be liable for any incidental or consequential damages for breach of this or any other warranty, express or implied, arising out of or related to the use of said gas detector. The manufacturer or its agent’s liability shall be limited to replacement or repair as set forth above. Buyer’s sole and exclusive remedies are the return of the goods and repayment of the price, or repair and replacement of non-conforming goods or parts.
Kele Inc.
3300 Brother Blvd
Memphis, TN 38133
Technical Support Contact Information
Phone: 1-877-826-9045
Email: DLtechsupport@Kele.com
Website: www.Kele.com/support/
Rev – 1.0.3
Issue Date: 07.11.2024
© Kele Inc. 2023. All rights reserved.
General Contact Information
Phone: 1-877-826-9045
Email: info@Kele.com
Website: www.Kele.com
External Dimensions: 6.299 x 6.299 x 3.543 in.
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