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1. Safety Summary
termination of the cable shield is required as per Johnson Controls-Hitachi Air Conditioning guidelines. Plenum and riser
ratings for communication cables must be considered per application and local code requirements.
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The polarity of the input terminals is important, so be sure to match the polarity when using contacts that have polarity.
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Highly dangerous electrical voltages may be used in this system. Carefully refer to the wiring diagram and these instructions when
wiring. Improper connections and inadequate grounding can cause serious injury or death.
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Before installing the controller or remote devices, ensure that the indoor and outdoor unit operation has been stopped.
Further, be sure to wait at least five minutes before turning off the main power switch to the indoor or outdoor units.
Otherwise, water leakage or electrical breakdown may result.
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Do not open the service cover or access panel to the indoor or outdoor units without turning OFF the main power supply. Before
connecting or servicing the controller or cables to indoor or outdoor units, open and tag all disconnect switches. Never assume
electrical power is disconnected. Verify with a meter and equipment.
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Use an exclusive power supply at the controller's rated voltage.
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Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit breaker, and so forth) with the
specified capacity. Ensure that the wiring terminals are tightened securely to recommended torque specifications.
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Clamp electrical wires securely with a cord clamp after all wiring is connected to the terminal block.
In addition, run wires securely through the wiring access channel.
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When installing the power lines, do not apply tension to the cables. Secure the suspended cables at regular intervals, but not
too tightly.
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Make sure that the terminals do not come into contact with the surface of the electrical box.
If the terminals are too close to the surface, it may lead to failures at the terminal connection.
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Do not pour water on the controller as it could cause electric shock and/or damage the unit.
Do not use strong detergent such as a solvent. Clean with a soft cloth.
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Check that the ground wire is securely connected. Do not connect ground wiring to gas piping, water piping, lighting
conductor, or telephone ground wiring.
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