AGSR-NDIR VRF Refrigerant Gas Leak Detector User Guide
- September 17, 2024
- AGS
Table of Contents
AGSR-NDIR VRF Refrigerant Gas Leak Detector
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Specifications
- VRF Detection
- Power Input: 24VAC or DC 90-250VAC
- Versions: LED & Screen
- Design: Modern & Compact
- Communication Protocols: MODBUS, BACnet, 0-10V
- Outputs: Modular Selection
- Alarm: In-Built Audible Alarm
Product Overview
The AGS VRF Refrigerant gas leak detector with NDIR sensor
technology is designed to continuously monitor for refrigerant
leaks in VRF systems. It features a low maintenance and high
accuracy NDIR sensor suitable for commercial applications.
VRF Applications
For spaces where ASHRAE 15 requirements are not met, adding gas
detection can be a solution. The AGSRG sensor can be used in rooms
where volume requirements cannot be achieved.
Installation and Use
The detector features Magnet Activated Calibration from the
front fascia, a Patented IR Sensor for extended lifespan, and
minimal sensor drift for accurate detection. Installation should
follow the provided guidelines for optimal performance.
Connectivity
Analog Outputs: 3x Linear 0-10V/2-10V CO2,
Temperature & Humidity. Thermistor (10K3)
Digital Networks: BACnet MS/TP / MODBUS RTU
(Parity: None Data bit: 8bit Stop bit: 1)
Relay Outputs: 1x SPST 70mA
FAQ
Q: How often should the detector be calibrated?
A: Calibration frequency may vary based on usage and
environmental conditions. It’s recommended to calibrate the
detector annually or as per the manufacturer’s guidelines.
Q: Can the detector be used in residential settings?
A: The AGS VRF Refrigerant gas leak detector is primarily
designed for commercial applications. For residential use, consult
with the manufacturer for suitability.
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VRF Detection
Design Guide
Satisfying code by adding gas detection.
24VAC or DC 90-250VAC Power Input
LED & Screen Versions
Modern & Compact Design
MODBUS BACnet 0-10V
Modular Selection of Outputs
In-Built Audible Alarm
Product Overview
The AGS VRF Refrigerant gas leak detector with NDIR sensor technology meets
the need for a cost-effective and reliable solution to continuously monitor
for refrigerant leaks that come from VRF systems. The detector is
aesthetically designed for commercial applications, and features a low
maintenance and high accuracy NDIR sensor.
VRF Applications
Designing over ASHRAE 15 Requirements? Try adding gas detection. Some local
jurisdictions allow for the use of refrigerant gas detection in occupied
spaces where the volume requirements determined by ASHRAE 34 refrigerant
concentration limits (RCL) can’t be achieved .
In rooms where the volume requirement can’t be met, an AGSRG sensor is placed.
Case Study
Woodland Park – Colorado
A VRF system was designed for a hotel in Woodland Park, Colorado that utilized
an innovated approach of refrigerant sensors to meet code. Instead of
resorting to multiple independent systems to meet compliance with code
regulations, refrigerant detection was strategically integrated into each room
that did not conform to the ASHRAE volume requirements. In accordance with
ASHRAE 15 guidelines, when designing a chiller room that fails to comply with
the ASHRAE RCL (refrigerant concentration limit) restrictions, the inclusion
of a gas detection system becomes a crucial prereqeusite. A similar principle
applies in specific jurisdiction when implementing VRF systems. By adopting
this solution, the hotel successfully streamlined its safety measures while
optimizing operation efficiency and adherence to regulations.
Elevation – NDIR vs. Semiconductor
At an elevation of 8,500 feet, it was critical to know the gas detection
system was able to operate in the environmental conditions. The NDIR sensors
in the AGSR-NDIR work based on a principle that different gases with absorb
infrared radiation produced by the sensor at specific wavelenghts, which is
unaffected by elevation. Alternatively, semi-conductor sensors were
considered. Semi-conductor sensors rely on physical interaction with the gas
molecules in the air and can be effected changes in atmospheric conditions,
including reduced air pressure and lower oxygen levels. Decreases in
atmospheric pressure can affect the sensitivity and response time of the
semiconductor sensor.
Installation and Use
Magnet Activated Calibration From Front Fascia Patented IR Sensor Extended
Lifespan Minimal Sensor Drift
Connectivity
Analog Outputs
3x Linear 0-10V/2-10V CO2, Temperature & Humidity. Thermistor (10K3)
I/Os
Digital Networks
BACnet MS/TP / MODBUS RTU (Parity: None Data bit: 8bit Stop bit: 1)
Relay Outputs 1x SPST 70mA
American Gas Safety
www.americangassafety.com
Head office: 6304 Benjamin Road, Suite 502, Tampa, FL 33634
Tel: 727-608-4375 Email:
info@americangassafety.com
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