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3. Evacuate the system to a reading of 5000 Microns (5
Torr).
4. Break the vacuum by allowing nitrogen into the port
connections (liquid and gas line pipes) until a positive
pressure is achieved.
5. Evacuate the system to a minimum reading of 500
Microns (0.5 Torr).
6. For a moisture-free system, ensure the vacuum is held
without movement for a minimum of 4 hours.
7. If vacuum fails to hold, carry out steps 2 through 6 until
vacuum holds.
Wiring Connections
WARNING
Electric Shock Hazard. Can cause injury or death. Unit
must be rounded in accordance with national and local
codes.
Line voltage is present at all components when unit is
not in operation. Disconnect all remote electric power
supplies before opening access panel. Unit may have
multiple power sources.
CAUTION
All terminal connections must be made as illustrated
in the following diagrams. Improperly connected wiring
could damage unit or cause communication errors
between indoor and outdoor units.
In the U.S.A., wiring must conform with current local codes
and the current National Electric Code (NEC). In Canada,
wiring must conform with current local codes and the
current Canadian Electrical Code (CEC).
Outdoor Unit
•
Refer to unit nameplate for minimum circuit ampacity
and maximum over-current protection size.
System and Terminal Designations
Indoor to Outdoor Wiring
L1, L2 and L3
Outdoor to Main Power
L1, L2 and GND
Table 7. Single Zone Installation Wiring Requirements
System
Capacity
36K
36K
•
Make all electrical power wiring connections at the out-
door unit.
•
Be sure to reattach all electrical box covers after con-
nections are complete.
Indoor Unit
•
Indoor unit is powered by the outdoor unit.
•
Communication Wiring - Use one stranded 3-conduc-
tor wire to provide power and one stranded 2-conduc-
tor wire to provide communication.
•
See "Table 7. Single Zone Installation Wiring Require-
ments" for wiring requirements.
•
See "Figure 27. 3PC036 Outdoor Unit Wiring Diagram"
on page 17 for communication bus connections be-
tween indoor and outdoor units.
NOTE: When installing a condensate pump the line voltage
will have to be broken by using the condensate
wiring or through the use of an external relay or
contactor.
IMPORTANT
This unit must be properly grounded and protected by a
circuit breaker. The ground wire for the unit must not be
connected to a gas or water pipe, a lightning conductor
or a telephone ground wire.
Do not connect power wires to the outdoor unit until
all other wiring and piping connections have been
completed.
Do not install the unit near a lighting appliance that
includes a ballast. The ballast may affect remote control
operation.
IMPORTANT
All illustrations listed are typical wiring diagrams. Refer
to the wiring diagram on the unit for actual wiring.
System
Number of
Voltage
Conductors
208/230VAC
3
208/230VAC
3
16
Wire Gauge /
Wire Type
MCA
Stranded and
16AWG
unshielded
Stranded and
10AWG / 30A
unshielded
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