INSTALLATION INSTRUCTIONS
R
−
22 Split System Air Conditioner
421 01 5203 02
7
Specifications subject to change without notice.
After the refrigerant charge has bled into the system,
open the Liquid service valve.
NOTE:
These are not back
−
seating valves. It is not
necessary to force the stem tightly against the rolled lip.
The service valve cap is a primary seal for the valve and
must be properly tightened to prevent leaks. Make sure
cap is clean and apply refrigerant oil to threads and
sealing surface on inside of cap.
Tighten cap finger tight and then tighten additional
6
of a
turn (1 wrench flat) to properly seat the sealing surfaces.
J. GAUGE PORTS
Check for leaks at the schrader ports and tighten valve
cores if necessary. Install plastic caps finger tight.
ELECTRICAL WIRING
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
Before installing, modifying or servicing system,
main electrical disconnect switch must be in the
OFF position. There may be more than 1
disconnect switch. Lock out and tag switch with a
suitable warning label.
The supply voltage must be 208/230 volts (197 volt
minimum to 253 volts maximum) 60 Hz single phase.
Outdoor units are approved for use with copper
conductors only. Do not use aluminum wire.
Refer to unit rating plate for minimum circuit ampacity and
circuit protection requirements.
Grounding
Permanently ground unit in accordance with the National
Electrical Code and local codes or ordinances. Use a
copper conductor of the correct size from the grounding
lug in control box to a grounded connection in the service
panel or a properly driven and electrically grounded
ground rod.
Wiring Connections
Make all outdoor electrical supply (Line Voltage)
connections with raintight conduit and fittings. Most
codes require a disconnect switch outdoors within sight of
the unit. Consult local codes for special requirements.
Route electrical supply (Line Voltage) wiring through
knockout hole in bottom of Control Box. Connect wires to
Contactor and Ground Lug according to Wiring Diagram
on unit. Also refer to Figure 9.
Route thermostat wiring through rubber grommet in
bottom of Control Box. Low voltage lead wires are
provided in the control box for connection to thermostat
wires (use wire nuts). Refer to Wiring Diagram on unit and
Figure 10 for low voltage wiring examples.
NOTE:
Use No. 18 AWG (American Wire Gage)
color
−
coded, insulated (35
°
C minimum) wire. If
thermostat is located more than 100 feet (31m) from unit
as measured along the control voltage wires, use No. 16
AWG color
−
coded wires to avoid excessive voltage drop.
Figure 9
Electrical Supply (Line Voltage) Connections
DISCONNECT
PER NEC AND/OR
LOCAL CODES
CONTACTOR
GROUND
LUG
FIELD GROUND
WIRING
FIELD POWER
WIRING
11
23 or 13
L1
L2
