Document No.: E20-018-00
1
1.
PRECAUTIONS DURING INSTALLATION
Pay attention to the following items during equipment installation and instrumentation work.
(1) When performing grounding work, use IV wire
(*)
or equivalent from the ground terminal in the
panel. Use a wire diameter equal to or larger than the main power wire (2.0 mm
2
or larger).
(2) Do not install an overcurrent protection circuit breaker in the grounding wire.
(3) Connect the power supply wiring from the boiler power supply. Ensure that an earth leakage
circuit breaker (with overcurrent protection) is installed in the boiler power-supply line.
(4) If the power supply wiring is not connected from the boiler power supply, ensure that a dedicated
earth leakage circuit breaker (with overcurrent protection) is installed.
(5) Use a wire with 0.1 MΩ or higher insulation resistance.
(6) Use a wire with 2.0 mm
2
or larger diameter.
(7) Do not extend the steam pressure sensor cable.
(8) Ensure that the distance between HUB and the equipment is within 100 m.