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English
CAUTION
•
To avoid subjecting the included drain hose (4) to excessive force, do not bend or twist.
(Doing so may result in a water leak.)
•
When using a central drain pipe, follow the instructions in
Figure 9
.
(2) After the completion of piping work, verify that water flows smoothly through the drain.
• Gradually add water to the inspection hole to verify the flow of wastewater into the drain pan. (
Refer to
Fig. 10.
)
Drain hoses (4)
(Accessories)
Inspection hole
Plastic container for
injecting water
Fig. 10
8. ELECTRIC WIRING WORK
8-1 GENERAL INSTRUCTIONS
•
All wiring must be performed by an authorized electrician.
• All field supplied parts and materials, electric works must conform to local codes.
•
Always ground wires. (In accordance with national regulations of the pertinent country.)
•
Always turn off the power before performing the electric wire installation work.
•
Follow the “WIRING DIAGRAM” attached to the unit body to wire the outdoor unit and indoor units.
• Properly connect wire of the specified wire type and copper thickness. Also use the included clamp to
avoid applying excessive force to the terminal (field wire, ground wire).
•
Do not let the ground wire should come in contact with gas pipes, water pipes, lighting rods, or telephone
ground wires.
• Gas pipes: gas leaks can cause explosions and fire.
•
Water pipes: cannot be grounded if hard vinyl pipes are used.
•
Telephone ground and lightning rods: the ground potential when struck by lightning gets extremely
high.
•
A circuit breaker capable of shutting down the power supply to the entire system must be installed.
•
This system consists of multiple BS units. Mark each BS unit as unit A, unit B . . . , and be sure the termi-
nal board wiring to the outdoor unit and indoor unit are properly matched. If wiring and piping between
the outdoor unit, BS unit and an indoor unit are mismatched, the system may cause a malfunction.
•
Do not turn on the power supply (branch switches, overload interrupters) until all other work is done.
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