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Safety Rules

General

  • Improper wiring of the product can damage it and lead to other hazards. Make sure that the product has been correctly wired before turning the power on.

  • Before wiring or removing/mounting the product, make sure to turn the power off. Failure to do so might cause an electric shock.

  • Do not touch electrically charged parts such as power terminals. Doing so might cause an electric shock.

  • Do not disassemble the product. Doing so might cause an electric shock or faulty operation.

  • Use the product only within the operating ranges recommended in the specification (temperature, humidity, voltage, shock, mounting direction, atmosphere, etc.). Failure to do
    so might cause a fire or faulty operation.

  • Firmly tighten the wires to the terminal. Failure to do so might cause a fire.

  • Avoid installing the product in close proximity to high-power electrical devices and cables, inductive loads, and switching devices. Proximity of such objects may cause an
    uncontrolled interference, resulting in an unstable operation of the product.

  • Proper arrangement of the power and signal cabling affects the operation of the entire control system. Avoid laying the power and signal wiring in parallel cable trays. It can
    cause interferences in monitored and control signals.

  • It is recommended to power controllers/modules with AC/DC power suppliers. They provide better and more stable insulation for devices compared to AC/AC transformer
    systems, which transmit disturbances and transient phenomena like surges and bursts to devices. They also isolate products from inductive phenomena from other transformers
    and loads.

  • Power supply systems for the product should be protected by external devices limiting overvoltage and effects of lightning discharges.

  • Avoid powering the product and its controlled/monitored devices, especially high power and inductive loads, from a single power source. Powering devices from a single power
    source causes a risk of introducing disturbances from the loads to the control devices.

  • If an AC/AC transformer is used to supply control devices, maximum 100 VA Class 2 transformer must be used to avoid unwanted inductive effects, which are dangerous for
    devices.

  • Long monitoring and control lines may cause loops in connection with the shared power supply, causing disturbances in the operation of devices, including external
    communication. It is recommended to use galvanic separators.

  • To protect signal and communication lines against external electromagnetic interferences, use properly grounded shielded cables and ferrite beads.

  • Switching the digital output relays of large (exceeding specification) inductive loads can cause interference pulses to the electronics installed inside the product. Therefore, it is
    recommended to use external relays/contactors, etc. to switch such loads. The use of controllers with triac outputs also limits similar overvoltage phenomena.

  • Many cases of disturbances and overvoltage in control systems are generated by switched, inductive loads supplied by alternating mains voltage (AC 120/230 V). If they do not
    have appropriate built-in noise reduction circuits, it is recommended to use external circuits such as snubbers, varistors, or protection diodes to limit these effects.

UL

UL listed for U.S. and Canada according to UL 60730-1 and CAN/CSA E 60730-1

UL compliant ratings:

  • Power supply: 24 V DC, 7 W or 24 V AC, 18 VA, provided by PELV/Class 2 power source;

  • Triac outputs: 24 V AC, 50/60 Hz, 0.5 A, SELV/PELV/Class 2, General Purpose Load;

  • Analog outputs A1, A2, A3: 0-10 V DC, 20 mA, PELV/Class 2, P<15 W, resistive load;

  • Analog outputs Vout: PELV/Class 2, P<15 W, resistive load:

    • 23 V DC, 2.5 W for 24 V DC power supply input,

    • 33 V DC, 2.5 W for 24 V AC power supply input;

  • Maximum torque of damper actuator 4 Nm (35 in-lb).

UL compliant notes:

  • Degree of protection provided by enclosure: open type;

  • Purpose of control: operating control;

  • Construction of control: independently mounted control;

  • Type of action: Type 1 Action;

  • Method of mounting control: to be installed in Class I or Class II electrical panels/cabinets/“VAV box”, restricted access to the actuator;

  • Pollution degree: 2;

  • Impulse voltage: 500 V;

  • VAV14-IP must be supplied by a PELV power source. Functional earth must be connected G0 terminal;

  • VAV14-IP is declared and rated as an open type equipment. Therefore, special precautions must be taken during installation and maintenance in the end use application;

  • For screw terminals solid or stranded wire are allowed with minimum required torque value is 3.5 pound inch;

  • The maximum length of cables connected directly to terminals of the product is 10 m (power supply lines, input/output and communication lines).