Azbil AUR450C - Chapter 2: Mounting and Wiring; General Mounting Guidelines and Precautions; Recommended Mounting Locations and Spacing

2-1
Chapter 2. MOUNTING AND WIRING
2-1 Mounting
WARNING
Before wiring, mounting, or removing this device, be sure to turn the power off. Wiring with the
power on can result in an electric shock.
CAUTION
Do not mount the AUR450C in the following places:
•
In the presence of chemicals or corrosive gas, such as ammonia, sulfur, chlorine, ethylene
compound, acid, or others.
•
Where it is exposed to water drops or damp atmosphere.
•
Where it is exposed to high temperatures.
•
Where vibration continues for an extended period of time.
This device has a protective structure equivalent to IP20. Take measures to protect it from dust.
In particular, if the equipment is designed to comply with CE/UL standards, be sure to mount this
device in an instrument panel with IP54 or equivalent protection.
When installing or wiring, be sure to follow the instructions in this manual and in the
manufacturer’s manual for the combustion equipment.
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 burner controller. After wiring, check that the equipment is
operating properly.
 Mounting locations
For effective heat radiation and convenient dismounting, wiring and maintenance,
be sure to leave work space around the device as shown below.
50 mm min.
100 mm min.
100 mm min.
50 mm min.
100 mm min.
100 mm min.
50 mm min.
50 mm min.
Stand-alone mounting
Close side-by-side mounting
POWER
EVENT
SHUTTER
FLAME
ALARM
START
IG
PV
MV
RST
DISP
FLAME
VOLTAGE
ADDRESS
LOADER
RS-485
DYNAMIC SELF CHECK
BURNER CONTROLLER
AUR450
POWER
EVENT
SHUTTER
FLAME
ALARM
START
IG
PV
MV
RST
DISP
FLAME
VOLTAGE
ADDRESS
LOADER
RS-485
DYNAMIC SELF CHECK
BURNER CONTROLLER
AUR450
POWER
EVENT
SHUTTER
FLAME
ALARM
START
IG
PV
MV
RST
DISP
FLAME
VOLTAGE
ADDRESS
LOADER
RS-485
DYNAMIC SELF CHECK
BURNER CONTROLLER
AUR450
Handling Precautions
•
When installing multiple devices, leave as much space as possible between
the devices for heat dissipation.
•
If ambient temperature is close to the allowable upper limit, use a panel cooler
or cooling fan to reduce the panel box temperature.
Allowable ambient temperature upper limits:
Stand-alone mounting: 55 °C
Close side-by-side mounting: 45 °C