Honeywell ZIO TR75 - Manual (Page 2)

ZIO ® /ZIO PLUS LCD WALL MODULES
62-0271—07 2
Communications
The wall modules use a sensor bus (S-BUS) for
communications with the programmable controller. Wire the
two S-BUS terminals according to these installation
instructions.
The wall modules have a network bus port for L ON M ARK ® or
BACnet® communications. If network communication is
needed, connect the building LON network wires to the two
terminals (NET-1 and NET-2), according to these installation
instructions. A network bus port is accessible at the bottom of
the wall module by removing the jack plug. See Fig. 1.
The network bus and S-BUS terminals (see Fig. 6 on page 4)
are insensitive to polarity, minimizing installation errors due to
mis-wiring.
BEFORE INSTALLATION
Fig. 1. LCD Wall Module features.
CAUTION
Erratic System Operation Hazard.
Failure to follow proper wiring practices can
introduce disruptive electrical interference (noise).
Keep wiring at least one foot away from large inductive
loads such as motors line starters, lighting ballasts,
and large power distribution panels.
Shielded cable is required in installations where these
guidelines cannot be met.
Ground the shield only to the grounded controller
case.
IMPORTANT
All wiring must comply with local electrical codes and
ordinances or as specified on installation wiring dia-
grams.
— Wall module wiring can be sized from 18 to 24 AWG (0.82
to 0.20 sq. mm), depending on the application. For
multiple Zios on the same S-BUS, 24 AWG wire is
recommended.
— For S-BUS wiring, the Zio may be mounted up to 200 ft.
(61 m) from the programmable controller. If multiple Zios
are installed, the total distance from the controller to the
last Zio should not exceed 200 ft.
— Twisted pair wire is recommended for wire runs longer than
100 ft. (30.5 m).
— All wiring is polarity insensitive.
— The cover for the wall module is packed separately from
the subbase for ease of installation.
INSTALLATION
Mount the wall module on an inside wall approximately 54 in.
(1372 mm) from the floor (or in the specified location), to allow
exposure to the average zone temperature. Do not mount the
wall module on an outside wall, on a wall containing water
pipes, or near air ducts. Avoid locations that are exposed to
discharge air from registers or radiation from appliances,
lights, or the sun.
The wall module can be mounted on a wall, on a standard
utility conduit box using No. 6 (3.5 mm) screws or on a 60 mm
wall outlet box (see Fig. 3). When mounting directly on a wall,
use the type of screws appropriate for the wall material.
Fig. 2. Subbase mounting holes and locking tabs.
LCD PANEL
M27344
SOFTKEYS (3)
UP/DOWN
ARROW KEYS
NETWORK BUS PORT (ON BOTTOM OF CASE)
2-3/8 (60)
2-3/8
(60)
3-1/4
(83)
M27345
LOCKING
TABS (4)
2-3/8 (60)
3-3/8 (95)
4-1/8
(105)