DeLUX MOISTURE Link G2 DP, Руководство по эксплуатации

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SUGGESTED GROUNDING RULES
The MicroM system, being microprocessor based, requires a ground system that provides a zero-
voltage reference. The voltage measured from L2 to all other terminals except L1 should be 0 volts.
1.
The most effective ground is to run the ground wire in the same raceway as the hot and neutral
from the main distribution service panel (not intermediate sub-panels) to the burner control
panel and insure that this ground wire is well bonded to the control panel.
2.
The wiring base of the MicroM must have earth ground providing a connection between the sub-
base and the control panel or the burner.
3.
The earth ground wire must be capable of conducting the current to blow the 20A fuse in event
of an internal short circuit. A number 14 AWG copper conductor is adequate, wide straps or
brackets are preferred rather than lead wires.
4.
The ground path needs to be low impedance (less than 1 ohm) to the equipment frame which in
turn needs a low impedance to earth ground. For a ground path to be low impedance at RF fre-
quencies, the connection must be made with minimum length conductors having maximum sur-
face areas.
5.
All connections should be free of nonconductive coatings and protected against rust.
6.
Utilizing conduit as a means of providing a ground must be avoided.
7.
Installing ground rods at the burner control panel defeats the purpose of a single point ground as
described above and could also present a safety hazard.
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 prefera-
bly the burner frame.
The MicroM chassis (MEC120) contains a transient suppressing device connected internally across
hot and neutral and then to the internal bracket. For this to be effective the chassis must be screwed
securely into the wiring subbase.
REMOTE DISPLAY
When the ED510 is to be remotely mounted on the front of the control panel, the ED580 cable must
contain a ferrite core, currently supplied by Fireye with the cable. The cable end with the ferrite core
must be mounted at the control end. High frequency currents flow more to the surface of the conduc-
tor. The 60 Hz ground system, properly designed, has sufficient low-impedance at 60 Hz to maintain
all metal surfaces at the same ground reference. But, this same system is unable to provide this at
higher frequencies, because of the increased impedance caused by the ‘skin effect’. The purpose of
the ferrite core is to provide a high-impedance at these higher frequencies and absorb or block this
unwanted energy.
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.