Sanyo SGP-E120J2GU2, User Manual

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Water heat exchange unit
H - 23
(3) Cautions regarding electrical construction
Carefully read the following guidelines to ensure safety before beginning the electrical construction work.
The precautions given in this test consist of specific [
Warnings
] and [
Cautions
]. They are all important items regarding
safety, so they must be carried out.
Their meanings are as described below.
Warnings
: Indicates situations in which faulty operation could result in the possibility of serious personal injury or
even death.
Cautions
: Indicates situations in which faulty operation could result in the danger of personal injury or physical
damage.
1
Cautions regarding safety
Warning
●
Electrical installation should be entrusted to the dealer where this product was purchased, or a
professional contractor. Incomplete electrical installations carried out by yourself can result in defects,
electric shocks or fire.
●
The electrical installation should be carried out by an properly qualified electrician, in accordance with
“Technical criteria for electrical equipment”, “Electrical wiring regulations”, “ To those undertaking the
electrical construction (chiller)”. If there is a defect in the electrical construction then this can result
in an electric shock, or cause fires.
2
Cautions regarding electrical cabling construction
Warning
●
Use a dedicated branch circuit for the electrical cabling, and do not share it with other equipment.
Secondary damage can occur as a result of a circuit breaker activating.
●
Use only the specified cable (type, size) and carefully join them. Ensure that external force from the
cable does not transmit to the terminals by securing them properly. If the cable joints are not stable
then this can result in heat generation and cause fires.
Caution
●
Fix an overload circuit breaker to each unit with the correct load setting. If the incorrect breaker is
installed then this can result in heating, short circuit, and lead to fires.
●
Fix an earth leakage breaker to each unit with the correct load setting. (earth leakage breaker rating:
30mA, 0.1s)
If an earth leakage breaker is not installed then this can result in electrical shocks and fires.
●
For the grounding connection, install a D type connection in accordance with the Technical Criteria for
Electrical Equipment (used to be type 3 grounding connection).Do not connect the grounding cable to
gas pipes, water pipes, lightning conductors, or telephone grounding cables. If the grounding is not
sound then this can cause electric shocks.
●
This equipment uses an inverter, so use an earth leakage breaker that is compliant with an inverter.
●
Fix the electrical power cable and the operation cable between the water heat exchanger unit and the outdoor unit to
the fixing clamper in the outdoor unit, and do not touch the following type of objects.
•The moving or high temperature parts of an engine or electrical machine.
•Refrigerant piping, small diameter pressure reading test pipe or any part of the refrigerant circuit.
•Sharp edges of fitting metals or other objects .
●
When laying the electrical power cable and the operation cable between the water heat exchanger unit and the outdoor
unit to the electrical equipment box, leave about 20cm of slack inside the box.
●
The remote control cable has polarity, so be certain to connect to the correct terminal number.
●
Use signal cable for communication cable (remote control, operation cable between water heat exchanger unit and the
outdoor unit) to make it easy to differentiate from power cable (AC 230V).
Also, do not run the power cable with the communication cables.
●
Keep the chiller power and communication cables at least 3m from television, radio, stereo, interphone, personal
computer, word processor, and telephone including antenna, operation, and power cables. This can cause noise and
other undesirable effects.
7. Points regarding electrical construction