General Wiring Considerations - KMC Controls KMCConquest FlexStat BAC-19 Series Sequence Of Operation

GENERAL WIRING CONSIDERATIONS

NOTE: See the BAC-19xxxx FlexStat
Application Guide
information about network and other
wiring.
CAUTION
Although typical terminal code letters
are shown in the illustrations in this
document, check the schematics of
your unit for wiring details!
CAUTION
The BAC-19xxxx models are
NOT compatible with the
backplates of older BAC-
10xxx/12xxxx/13xxxx/14xxxx
FlexStats! If replacing an older
FlexStat, replace the backplate as
well.
CAUTION
To avoid damage from ground loops
and other communication issues in
networked FlexStats, correct phasing
on MS/TP network and power
connections on ALL the networked
controllers is critically important.
CAUTION
Relays are for Class-2 voltages (24
VAC) only. Do not connect line voltage
to the relays!
Do not mistakenly connect 24 VAC to
an analog output ground.
NOTE: FlexStat relays are NO, SPST (Form
"A"). (To emulate binary outputs with
the analog outputs, set the output
voltage to be either 0 or 12 VDC in
Control Basic.)
BAC-19xxxx FlexStat Sequence of Operation and Wiring Guide
for more important
• Because of the many connections (power,
network, inputs, outputs, and their respective
grounds or switched commons), be sure
wiring is well planned before installation of
conduit!
• Make sure that conduit for all wiring has
adequate diameter for all necessary wiring.
Using 1-inch conduit and junction boxes is
recommended! Use external junction boxes
above the ceiling or in another convenient
location as needed to make connections that
run to the FlexStat's junction box.
• To prevent excessive voltage drop, use a
conductor size that is adequate for the wiring
length! Allow plenty of "cushion" to allow for
transient peaks during startup.
• Using multiple conductor wires for all inputs
(e.g., 8 conductor) and outputs (e.g., 12
conductor) is recommended. Grounds for all
the inputs can be combined on one wire.
2 AG200123C