Installation guide

I Split System Condensers Installation InstructionsI
Figure 5 - Charging Chart
Reference Charge Liquid Line Suction Min. Subcooling Acceptable
UNIT Level 1 R-22 Ounces Size2 Line Size 3 Recommended Deg. F Subcooling Range
CAC075 245 5/8" (1/2") 1-1/8" 10° 10° - 18°
CAC090 240 5/8" (1/2") 1-1/8" 10° 10° - 15°
CAC120 384 5/8" 1-1/8" 10° 10°- 15°
CAE075 285 1/2" (5/8") 1-1/8" 10° 10° - 18°
CAE090 328 5/8" (1/2") 1-1/8" 10° Both Compressors 12° - 20° Both Compressors
6° One Compressor 6° - 14° One Compressor
NOTES: Outdoor units to matched with thermostatic expansion valve indoor units only.
1. Approximate charge level with recommended line sizes 25 feet in length.
2. Size in parenthesis is acceptable alternate line size.
3. Do not increase the suction line diameter for vertical suction risers any larger than what is shown.
Electrical Wiring
Electrical Shock Hazard.
Shut off electric power at fuse box or service pan-
el before making any electrical connections.
Failure to shut off electric power can result in,
property damage, personal injury and/or death.
NOTE: The blue low voltage wire is 24vac common and is
grounded to the control box,
Use of Rigid Metal Conduit
It is recommended that wires be tied together or twisted to-
gether inside the conduit. This will minimize any buzzing
type sounds that could be produced with high current
loads, such as during starting. Under some conditions it
may be necessary to use a hard start kit to eliminate prob-
lem noises.
Refer to the unit rating plate for proper supply voltage.
For international models only: The unit should be wired
through a properly sized disconnect switch that opens all
poles.
APPROVED FOR USE WITH COPPER CONDUCTORS
ONLY. DO NOT USE ALUMINUM WIRE,
REFER TO UNIT RATING PLATE FOR CIRCUIT
PROTECTION.
Grounding
Permanently ground unit in accordance with the National
Electrical Code and local codes or ordinances. Use a cop-
per conductor of the correct size from the grounding termi-
nal 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) connec-
tions with raintight conduit and fittings. Most codes require
a disconnect switch outdoors within sight of the unit.
Route Line Voltage wiring through entrance and through
hole in the bottom of the Control Box to connect to Contac-
tor and Ground Lug.
Route Low Voltage wiring through entrance ONLY and
make ALL low voltage connections to the low voltage pig-
tails in the area below the Control Box. The pigtail wires
have 600V insulation meeting approval for use in high volt-
age areas,
Control Box Access
Remove the four screws. Cover is notched so it will slide
out from under top edge of unit,
Figure 6
Indoor
Thermostat
@-
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1
R G
I !
A/C Condenser Typical Low
Voltage Connections
(Compressor Contactor)
Outdoor Unit
Yellow (Y1)
Gray (Y2)
• Red (Hot 24V)
-'•-- Blue
(Common 24V)
BL W
I i
INDOOR
BLOWER
COIL
GAS
OR FURNACE
501 01 1504 O0 7L_J