Fireye YB110 Manual page 12

INSTALLATION PROCEDURE
WIRING BASE
Install the wiring base where the relative humidity never reaches the saturation point. The Burner-
Logix system is designed to operate in a maximum 90% relative humidity continuous, non-condens-
ing environment. Do not install the BurnerLogix system where it can be subjected to vibration in
excess of 0.5G continuous maximum vibration. The BurnerLogix system is not a weather tight
enclosure. The standard vertical position is recommended. Allow at least one inch clearance around
the control for service and installation.
Wiring must comply with all applicable codes, ordinances and regulations.
1.
2. Wiring must comply with NEC Class 1 (Line Voltage) wiring.
Limits and interlocks must be rated to simultaneously carry and break current to the ignition
3.
transformer, pilot valve and main fuel valve(s).
4. Recommended wire routing of lead wires:
5. Maximum wire lengths:
A good ground system should be provided to minimize the effects of AC quality problems. A prop-
erly designed ground system meeting all the safety requirements will ensure that any AC voltage
quality problems, such as spikes, surges and impulses have a low impedance path to ground. A low
impedance path to ground is required to ensure that large currents involved with any surge voltages
will follow the desired path in preferences to alternative paths, where extensive damage may occur to
equipment.
WARNING: Controls require safety limits utilizing isolated mechanical contacts. Electronic
limit switches may cause erratic operation and should be avoided.
BEFORE INSTALLING THE BURNERLOGIX CONTROL
CAUTION: Ensure that electric power is turned off. Refer to SN-100 for recommended
grounding techniques.
Be aware that power to some interlocks (operating controls, air flow switches, modulating
circuits, etc.) may be derived from sources other than what is controlling the BurnerLogix.
12
a. Do not run high voltage ignition transformer wires in the same conduit with any other
wires.
b. Do not route flame detector lead wires in conduit with line voltage circuits. Use separate
conduit where necessary.
a. The maximum lead wire length is 200 ft. (61 meters) to terminal inputs (Operating limits,
interlocks, valves, etc.).
b. Flame Detector lead wires: see section on flame scanners
c. Remote reset: The maximum length of wire is 500 feet (152 meters) to a normally open
remote reset push-button, but should remain within sight and sound of the burner.
d. Modbus communications: The maximum cable length of wire is 3300 feet (1000 meters)
for RS-485.
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