Trane Foundation EDK180 - Leak Detection System; Circuit)

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RT-SVX094A-EN
Rooms connected by drop ceilings only are not considered
a single room.
Rooms on the same floor of the building, and connected by
an open passageway, can be considered part of the same
room if the passageway is a permanent opening, extends
to the floor and is intended for people to walk through.
Adjacent rooms on the same floor of the building and
connected by permanent openings in the walls and/or
doors between rooms (including gaps between the wall and
the floor), can be considered part of the same room if the
openings meet the following criteria.
• The opening is permanent and cannot be closed.
• Openings extending to the floor, such as door gaps,
need to be at least 20 mm above the floor covering
surface.
• Natural ventilations opening areas must meet the
requirements of ANSI\ASHRAE Standard 15-2022,
Section 7.2.3.2.
Rooms that are connected by a mechanical ventilation
system can be considered a single room area if the
mechanical ventilation system meets the requirements of
ANSI\ASHRAE Standard 15-2022, Section 7.6.4.
Leak Detection System
(Refrigerant charge greater than 3.91 lb
per circuit)
The leak detection system consists of one or more
refrigerant detection sensors. When the system detects a
leak, the following mitigation actions will be initiated until
refrigerant has not been detected for at least 5 minutes:
• Energize the supply fan(s) to deliver a required
minimum amount of circulation airflow.
• Disable compressor operation.
• Provide an output signal to fully open all zoning
dampers, such as VAV boxes.
• Provide an output to energize additional mechanical
ventilation (if needed).
• Units without airflow proving will disable electric heat
sources.
Building fire and smoke systems may override this function.
If the refrigerant sensor has a fault, is at the end of its life,
or is disconnected, the unit will initiate the mitigation
actions. Mitigation actions may be verified by disconnecting
the sensor.
The refrigerant sensors do not need service. Use only
manufacturer-approved sensors when replacement is
required.
A2L Information