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Safety Precautions
WARNING
Use this device with combustion equipment that is started and stopped at least once in a 24-hour
period.
This device cannot be used for equipment with combustion continuing for 24 hours or longer.
Implement a safety design for the prepurge and external timer circuits, taking into account the
safety guidelines for the equipment. An explosion can occur if this device is turned on without
carrying out a prepurge. This device does not have a prepurge function.
To connect this device to the power supply, connect the high potential side (L1) to terminal 2*1
and the low potential side (L2(N)) to terminal 3.*2 Use a circuit to which power is constantly
supplied after the non-fuse circuit breaker (or power switch) is turned on.
*1. Terminal 1 if the replacement base unit (Q890A100) is used
*2. Terminal 2 if the replacement base unit (Q890A100) is used
Do not use a circuit that has a start input between the non-fuse circuit breaker (or power switch)
and terminal 2 or 3*3 of this device.
*3. Between the circuit breaker (or power switch) and terminal 1 or 2 if the replacement base
unit (Q890A100) is used.
Connect the load (ignition transformer, solenoid valve, etc.) directly to the output terminals of this
device. If it is not directly connected, combustion safety cannot be ensured.
The ignition time for the pilot and main burners should not exceed the time defined by the burner
or device manufacturer.
If it does, fuel will accumulate in the combustion chamber and form an explosive mixture, resulting
in a very dangerous situation in which an explosion could occur.
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.
If the system is locked out, do not reset it until the cause of the problem has been eliminated.
Do not allow multiple repeated resets. Mishandling in this way can cause a serious combustion
equipment accident.
Do not connect the solenoid valve to the high potential side (L1). If it is connected to L1 and a
ground fault occurs, current can leak to the solenoid valve and open it, allowing fuel to flow out,
regardless of the status of the burner controller.
This device has functions that are extremely important for the safe operation of combustion
equipment. Use it correctly in accordance with the user's manual.
Check the model number carefully and check that the sequence timing is as specified by the
combustion equipment manufacturer.
Installing an incorrect model can result in an explosion hazard.
Terminal 14 (F) retains an electrical charge even after the power is turned off. Do not touch
terminal 14 (F) even after turning the power off. Doing so may result in an electric shock.
Do not start regular operation of equipment without first completing the trail-run adjustments for
this device, as well as the tests specified by the equipment manufacturer.
Do not disassemble this device.
Doing so may cause malfunction, device failure, or electric shock.
Содержание AUR890 Series
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