Installation
Installation Manual 23
ENGLISH
• Earth should be connected.
• If grounding is not properly done, there is a risk of electric shock. Grounding must be done by
a qualified technician.
• Consider the surrounding conditions(surrounding temperature, direct sunlight, rain water,
etc.) when wiring the cable.
• The thickness of the power cable is the minimum thickness of metal conductor cable. Use
thicker cable considering the voltage drop.
Types of the cables
Safety Breaker
Current recommended fuses(A) 15
Power Supply cable Spec (Include earth) No * mm
2
H07RN-F 3 * 1.0
General consideration
Followings should be considered before beginning unit wiring.
• Field-supplied electrical components such as power switches, circuit breakers, wires, terminal
boxes, etc should be properly chosen with compliance with national electrical legislation or
regulation.
• Make it sure that supplied electricity is enough to operate the unit, water tank heater, etc. The
capacity of fuse also selected according to the power consumption.
• The main electricity supply should be dedicated line. Sharing main electricity supply with other
devices such as washing machine or vacuum cleaner is not permitted.
• Before starting wiring job, the main electricity supply should be turned off until wiring is completed.
• When adjusting or changing wiring, the main electricity supply should be turned off and ground wire
should be connected securely.
• Installation place should be free from the attack of wild animal. For example, mice's wire attacking or
frog's entering into the unit may cause critical electrical accident.
• All power connections should be protected from dew condensation by thermal insulation.
• All electrical wiring should comply with national or local electrical legislation or regulation.
• The ground should be connected exactly. Do not earth the unit to the copper pipe, steel fence at the
veranda, city water outlet pipe, or any other conductivity materials.
• Fix all cable using cord clamp tightly. (When cable is not fixed with cord clamp, use additionally
supplied cable ties.)
Connecting Cables
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