Section 1. Safety - Trane A5AC3018A Installation And Operation Manual

Section 1. Safety

NOTE: R454B refrigerant is a blend and should only
be added to the system in liquid form.
!
HAZARDOUS VOLTAGE!
Failure to follow this Warning could result in property
damage, severe personal injury, or death.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized.
!
REFRIGERANT OIL!
Any attempt to repair a central air conditioning product
may result in property damage, severe personal injury,
or death.
Use only R-454B approved service equipment. All
R-454B systems with variable speed compressors use
variable speed compressor oil that readily absorbs
moisture from the atmosphere. To limit this
'hygroscopic' action, the system should remain sealed
whenever possible. If a system has been open to the
atmosphere for more than 4 hours, the compressor oil
must be replaced. Never break a vaccum with air and
always change the driers when opening the system for
component replacement.
!
HOT SURFACE!
May cause minor to severe burning. Failure to follow
this Caution could result in property damage or per-
sonal injury. Do not touch top of compressor.
!
RISK OF FIRE!
Flammable refrigerant used. To be repaired only by
trained service personnel. Do not puncture refrigerant
tubing.
Dispose of properly in accordance with federal or local
regulations. Flammable refrigerant used.
!
BRAZING REQUIRED - IF USING MECHANICAL
CONNECTIONS, ENSURE LEAK TEST IS
NEGATIVE!
Failure to inspect lines or use proper service tools
may result in equipment damage or personal injury.
If using existing refrigerant lines make certain that all
joints are brazed, not soldered.
2
WARNING
WARNING
CAUTION
WARNING
WARNING
!
CONTAINS REFRIGERANT!
Failure to follow proper procedures can result in
personal illness or injury or severe equipment
damage.
System contains oil and refrigerant under high
pressure. Recover refrigerant to relieve pressure
before opening system.
!
GROUNDING REQUIRED!
Failure to inspect or use proper service tools may
result in equipment damage or personal injury.
Reconnect all grounding devices. All parts of this
product that are capable of conducting electrical
current are grounded. If grounding wires, screws,
straps, clips, nuts, or washers used to complete a
path to ground are removed for service, they must be
returned to their original position and properly
fastened.
!
SERVICE VALVES!
Failure to follow this warning will result in abrupt re-
lease of system charge and may result in personal in-
jury and/or property damage. Extreme caution should
be exercised when opening the Suction and Liquid
Line Service Valve. Turn valve stem counterclockwise
only until the stem contacts the rolled edge. No torque
is required.
!
HIGH LEAKAGE CURRENT!
Failure to follow this Warning could result in property
damage, severe personal injury, or death.
Earth connection essential before connecting
electrical supply.
!
VENTILATION
Ensure that the area is in the open or that it is ad-
equately ventilated before breaking into the system or
conducting any hot work.
Important: If using other than copper pipe, follow
manufacturer's installation instructions. Joints must
be brazed or other UL/IMC/URMC approved joint that
meets pressure requirements.
Mode Model
Cooling 1.5 – 5 Ton
Heating 1.5 – 5 Ton
CAUTION
CAUTION
WARNING
WARNING
WARNING
Operating Range
55°F – 120°F
0°F – 66°F
88-A5AC3001-1A-EN