Trane 5TXCA001AS3HCA Installer's Manual page 5

D. REFRIGERANT LEAK DETECTION SYSTEM:
For all tables contained in this section of the manual, the
refrigerant charge is the total system charge which is marked
on the system according to the instructions provided by the
manufacturer of the outdoor unit.
!
WARNING
Risk of Fire!
Flammable refrigerant used. To be repaired only by
trained service professional. Do not puncture refrigerant
tubing.
Dispose of properly in accordance with federal or
local regulations. Flammable refrigerant used.
! WARNING
LEAK DETECTION SYSTEM!
LEAK DETECTION SYSTEM installed. Unit must be
powered except for service.
To ensure safety of the building occupants, the unit is
equipped with a refrigerant leak detection system. The system
is comprised of a refrigerant sensor and a mitigation control
board. The system automatically detects leaks in the indoor
coil and initiates actions to mitigate the risk of ignition of the
leaked refrigerant, including:
• Turning on the blower of the indoor unit to dilute leaked
refrigerant;
• Fully opening any zoning dampers, when applicable;
• Turning off the compressor of the outdoor unit;
• De-energizing potential sources of ignition connected to
the system;
• Energizing an audible alarm, if so equipped.
18-AD47D1-1B-EN
Installer's Guide
!
WARNING
RISK OF FIRE!
Failure to following this warning could result in serious
injury, death, or property damage.
The following requirements apply to the room where the
cased coil is installed:
• All combustion appliances located in the same
room that have continuous pilot lights are equipped
with an effective flame arrest.
• Auxiliary devices which may be a potential ignition
source, such as hot surfaces or electric switching
devices, shall not be installed in the connecting
ductwork unless they have been approved by
the manufacturer or declared suitable with the
refrigerant used.
• All indoor field-made joints of the field piping have
been checked for refrigerant leaks after charging
using an electronic leak detector calibrated for
R-454B having a sensitivity of 5 grams per year or
better.
• The room is constructed to ensure that should any
refrigerant leak it will not stagnate and create a fire
hazard.
Refrigerant sensors for refrigerant leak detection systems shall
only be replaced as specified by the manufacturer.
Minimum Conditioned Space
The installer must verify that the total space conditioned by the
system is large enough to safely dilute any leaked refrigerant
in the event of a refrigerant leak of the indoor coil.
The minimum space conditioned by the appliance shall be
according to Table below. The conditioned space includes
any parts of the space connected via an air duct system. The
altitude of installation is the altitude above sea level of the site
where the equipment is installed.
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