© 2023 Carrier 75
INSTALLATION
Do not run high voltage ignition transformer wires in the same conduit with flame detection
wiring. Do not run scanner wires in a conduit with line voltage circuits. Ensure the frame of the
ignition transformer is securely connected to control panel frame or preferably the burner frame.
The BurnerLogix chassis (YB110/YB230) contains a transient suppressing device connected
internally across hot and neutral and to earth ground, terminal E. For this to be effective terminal
E or the green wire in the pig-tail wiring base must be grounded well.
REMOTE DISPLAY
To locate the display remotely from the BurnerLogix control, mounting kits are available.
These are Fireye part numbers 129-178-4 or 129-178-8. Each kit contains a gasket, hardware
to mount the display and a 4- or 8-foot cable.
Care must be taken not to route the ED580 cable in close proximity to any starter motor
contactors located in the control panel or across any high voltage ignition wires. Refer to Fireye
bulletin E-8002 for proper installation.
COMMUNICATIONS
When interfacing Fireye controls to a communication system, be it a PLC or other
microprocessor-based device, ferrite cores should also be utilized. Proper twisted shielded pair
cable must be utilized. In a multi-drop system, the shields should be tied together within a
cabinet and not to any ground point. The shield at the source end of the cable of the multi-drop
connection can then be terminated to ground. Source end is defined as the originating end of
the communication system.
Care must be taken not to route communication cables in close proximity to any starter motor
contactors located in the control panel or across any high voltage ignition wires. Refer to Fireye
bulletin E-8002 for proper installation.
SCANNERS
The armored cable supplied with the Ultra-Violet and Infrared scanners should be connected
to equipment by means of a good mechanical connection such as a conduit fitting. It may be
necessary to utilize heat insulator (P/N 35-69) to isolate the sensing end of the scanner from
boiler ground. Care must be taken not to route the scanner cable across the high voltage ignition
cable. The high energy ignition cable should be checked periodically for cracking, connections,
and aging.
In applications using flame rod units, it may be beneficial to route a separate return wire from
the S2 terminal to the flame rod assembly. This will minimize the effects of transient currents
flowing into the BurnerLogix.
In all cases, scanner wires should be routed in separate conduit and not joined with any high
voltage AC or ignition cables.
MAINTENANCE
Periodically, the spark electrode should be inspected for proper gapping and cracked ceramics.
At ignition time, the high energy from the ignition transformer will attempt to conduct to the
point of least resistance and with an improper spark gap, where the conduction takes place will
no longer be controlled.
The VA rating of the control transformer must be sized to handle the inrush currents of the pilot
solenoid and ignition transformer at PTFI and then the inrush currents of the main fuel valve
assembly at MTFI time.
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