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Chapter 2. Installation, Wiring
CAUTION
If the wires from this device exceed the recommended length, to prevent malfunction due to
external electrical noise, take measures such as keeping power lines away from the input lines
between the control panel and the combustion equipment. After wiring, check that the equipment
is operating properly.
In the case of model AUR890G, do not connect terminal G to the ground.
Use non-voltage contacts for the connection to this device's external controller (for low voltage).
After the power has been turned ON, leave sufficient time before checking the output. This device
does not operate for about 8 seconds after the power has been turned ON.
Do not design instrumentation that shuts off the power to this device as soon as alarm output is
generated. Doing so can corrupt this device’s operation history records.
If there is an inverter or the like that generates strong electrical noise near this device, take noise-
suppression measures, referring to the user's manual for the noise-generating equipment.
Ensure you turn off the power of this device and all auxiliary devices when mounting, removing or
connecting the wires of this device.
There is a risk of electrical shock.
Do not wire this device so that it starts when the power is switched on. Doing so may prevent
execution of the start check.
Connect the power to terminals 2 and 3. For start-stop control, connect the external controller (for
low voltage) across terminals 17 and 20, or use voltage input from the external controller (for power)
to terminal 1.
Installation method
WARNING
Ensure you turn off the power of this device and all auxiliary devices when mounting, removing or
connecting the wires of this device.
There is a risk of electrical shock.
CAUTION
Mounting, wiring, maintenance, inspection, calibration, etc. should be carried out by a professional
with technical training in combustion systems and flame safeguard control devices.
Do not install where exposed to any of the following:
• Certain chemicals or corrosive gases (ammonia, sulfur, chlorine, ethylene compounds, acids, etc.)
• Dripping water or excessive humidity
• High temperatures
• Sustained long-term vibration
For mounting and wiring, follow the instructions in this user's manual or in the combustion
equipment manufacturer's manual.
A fuse is built into the control load line of this device. Do not short-circuit the load, or the fuse will
melt. If the fuse has melted, replace the device.
When using the device as a burner control system, install it to a control panel that supports IP40 or
more. If IP40 is required for this single device, also use a side board (sold separately). The protection
structure of the device is equivalent to IP10.
Содержание AUR890 Series
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