56
Single Zone Mega, Standard Efficiency
, and Mega 1
15V W
all Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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ELECTRICAL SYSTEM INSTALLATION
Outdoor Unit Electrical Connections
Connecting Outdoor Unit Wiring
• Verify that main power is completely off and that no power is going through the Single Zone system before proceeding with these steps.
Follow all safety and warning information outlined at the beginning of this manual. Failure to do so will cause electric shock, bodily injury
and / or death.
• Per code, install a main indoor breaker, and an outdoor service disconnect that interrupts all power sources simultaneously. There is risk of
fire, electric shock, explosion, physical injury or death.
• Verify that the circuit breaker or some other emergency power cutoff device is in place before any power wiring is done to the system. Fail-
ure to do so will cause electric shock, bodily injury and / or death.
•
Never touch any power lines or live cables before all power is cutoff to the system. To do so will cause bodily injury or death.
1. Using a Phillips head screwdriver, remove the piping / control box
cover or control box cover (depends on model) from the outdoor
unit.
2. Inspect all wiring inside the chassis to be sure they are secure and
have not loosen during transportation and installation of the outdoor
unit. Inspect wires for damage or cracks.
Loose, damaged, or cracked wires will cause electric shock, bodily injury
and / or death.
Loose wires can cause the wiring to burn out, damaging the outdoor unit.
3. Confirm that electrical power supply capacity will be sufficient to
run the unit. Verify that a circuit breaker and service disconnect are
installed. See the Electrical table in the Product Data section for
details on electrical requirements.
Per code, install a main indoor breaker, and an outdoor service discon-
nect that interrupts all power sources simultaneously. There is risk of fire,
electric shock, explosion, physical injury or death.
4. Confirm that the right gauge size is used for all wiring. Follow all
federal, state, and local codes related to wiring.
5. Guide the power wiring to the outdoor unit, and communications /
connection (power) cable from the outdoor unit to the indoor unit,
through the conduit holes on the outdoor unit or control box cover
(see images on the right and on the next page). Install conduits to
protect the wiring and cable.
Air
Conditioner
Main Power Source
Circuit Breaker
Use a circuit breaker
or time delay fuse
Figure 96: Circuit Breaker.
LSU180, 240HEV2
Terminal Block
Piping / Control
Box Cover
Figure 97: Accessing LSU090-120HEV2, LSU090-120HFV3, and
LSU090-120HXV2 Outdoor Unit Wiring Connections (Appearances Will
Differ Depending on Model).
Figure 98: Accessing LSU180-240HEV2 and LSU180-240HFV3
Outdoor Unit Wiring Connections.
LSU090, 120HEV2
Piping Connection
Cover
Outdoor Unit
Control Box
Cover
Terminal Block
LS090-120HEV2, LS090-120HFV3, and LS090-120HXV2 indoor units and outdoor
units have similar frames; however, LS090-120HEV2 and LS090-120HFV3 systems
require 208-230V, 60Hz, 1ph power supply, while LS090-120HXV2 systems require
115V, 60Hz, 1ph power supply. Verify which system is being installed. An incorrect
power supply will result in electric shock, fire, physical injury, or death.
