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Refrigerant Detector X
The S&S Middle East Merlin Refrigerant Detector X is an NDIR detector, commonly used as a standalone unit or integrated with a Merlin controller. The target refrigerant gases are heavier than air, meaning they will settle, so the sensor should be installed 12 inches from the floor in the protected area. Upon detection, the unit will trigger an alarm at 1000ppm. When connected to a Merlin controller, the built-in alarm relay outputs can activate a remote audible alarm and control ventilation fans. Once the leak is addressed, the sensor head will clear, and the Merlin panel and detector can be reset.
Product Information
ASHRAE 15 2022:
8.9 Refrigerating Machinery Room, General Requirements.
When a refrigerating system is located indoors and a machinery room is required by section 7.4, the machinery room shall be in accordance with the following provisions.
8.9.5 Each refrigerating machinery room shall contain a detector, located in an area where refrigerant from a leak will concentrate, that actuates an alarm and mechanical ventilation in accordance with Section 8.9.7 at a set point not greater than the occupational exposure limit (OEL) value as published in ASHRAE 34. For refrigerants that do not have a published OEL value in Standard 34, a set point determine in accordance with OEL as designed by Standard 34 shall be approved by the AHJ. The alarm shall annunciate visual and audible alarms inside the refrigerating machineryr room and outside each entrance to the refrigerating machinery room. The alarms required in this section shall be of the manual reset type with the reset located inside hte refrigeranting machinery room. Alarms set at other levels (such as IDLH) and automatic reset alarms are permitted in addition to those required by this section. The meaning of each alarm shall be clearly marked by signage near the annunciators.
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