Wiring - Honeywell 7800 Series Product Data

1. Use the 203765 Remote Display
Mounting Bracket as a template to mark
the four screw locations.
2. Drill the pilot holes for the four
mounting screws.
3. Mount the 203765 Remote Display
Mounting Bracket by securing the four
no. 6 screws (M3.5 x 0.6).
4. Mount the KDM by aligning the two
interlocking ears with the two mating
slots on the remote mounting bracket.
5. Insert the two interlocking ears into the
two mating slots.
6. Push on the lower corners of the KDM
to secure it to the remote mounting
bracket.
7. Make sure the KDM is firmly in place.

WIRING

WARNING
Electrical Shock Hazard.
Can cause severe injury or
death.
To prevent electrical shock and
equipment damage, disconnect
the power supply from the main
disconnect before beginning
installation. More than one
disconnect can be involved.
1. Refer to Fig. 3 for proper wiring.
2. Make sure all wiring complies with all
applicable electrical codes, ordinances
and regulations.
3. For recommended wire size and type,
see Table 1.
4. For Recommended grounding practices,
see Table 2.
5. For KDM: The KDM is powered from a
low voltage, energy- limited source. It
can be mounted outside of a control
panel if it is protected from mechanical
damage.
NOTE: A 13 Vdc power supply must be
used any time more than one
KDM is used. A maximum of two
KDM, Data ControlBus™ Modules
or S7810B Multi-Drop Switch
Modules are allowed in any
combination.
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module
Application
Keyboard Dis-
play Module
Data Control-
Bus™ Module
Remote Reset
Module
Commu-
nications
Interface
ControlBus
Module™
13 Vdc full
wave rectified
transformer
power input.
Table 1. Recommended Wire Size and Part Number.
Ground Type
Signal ground
(KDM, Data Con-
trolBus™ Module,
Communica-
tions Interface
ControlBus
Module™).
Table 2. Recommended Grounding Practices.
6. Recommended wire routing:
a. ControlBus:
(1) Do not route the ControlBus cable
in conduits that carry line voltage
circuits.
(2) Avoid routing the ControlBus cable
close to ignition transformer leadwires.
(3) Route the ControlBus cable outside
of conduit if properly supported and
protected from damage.
b. Remote Reset:
(1) Do not run high voltage ignition
transformer wires in the same conduit
with the Remote Reset wiring.
(2) Do not route Remote Reset wires in
conduit with line voltage circuits.
7. Maximum wire lengths:
(a) KDM: The maximum length
interconnecting wire is 4000 ft
(1219m).
5
Recommend-
ed Wire Size Part Num-
22 AWG two- Belden 8723
wire twisted pair shielded
with ground, or cable or
five-wire. equivalent.
22 AWG two- Belden 8723
wire twisted pair shielded
with ground, or cable or
five-wire. equivalent.
22 AWG two-
wire twisted pair,
—
insulated for low
voltage.
Belden 8723
22 AWG two-wire
shielded
twisted pair with
cable or
ground.
equivalent.
18 AWG wire,
insulated for
TTW60C,
voltages and
THW75C,
temperatures for
THHN90C
given applica-
tions.
Recommended Practice
Use the shield of the signal
wire to ground the device to
the signal ground terminals
[3(c)] of each device. Con-
nect the shield at both ends
of the daisy chain to ground.
32-00110-07
Recom-
mended
ber