Honeywell TR75 User Manual

62-0271-07

Zio®/Zio Plus LCD Wall Modules

TR70, TR71 and TR75 models with Sylk® bus

INSTALLATION INSTRUCTIONS

• Customized parameter access, by using the WEBs-AX
Workbench tool.

• Ability to link setpoint limits to a network variable.

• Programmable for: home screen options, tenant
access, contractor access, access to controller
parameters, setpoint, override, fan, and other
parameters.

• TR70 and TR71 have the ability to access and adjust
virtually any parameter in the programmable controller
(except Scheduling).

• TR75 can additionally access and adjust the controller
schedule.

• The TR71 has roughly twice the memory capacity for
parameters as the TR70, and the TR75 has more than
twice the memory capacity for parameters as the TR71.

• Ability to balance the VAV system from the wall module.

• Home screen can display one to three of any of the

PRODUCT DESCRIPTION

The TR70, TR71 and TR75 are 2-wire, non-polarity sensitive,
Sylk bus communicating wall modules, which communicate
with Spyder® and some ComfortPoint™ programmable
controllers.

All models have a space-temperature sensor, network bus
jack, and an LCD panel with three softkeys and two Up/Down
adjustment keys. The TR70-H, TR71-H and TR75-H models
include an onboard humidity sensor.

NOTES:

1. Refer to the Zio/Zio Plus LCD Wall Modules –
Specification Data, form 63-1322, for specific
model features and additional information.

2. Refer to the Zio/Zio Plus LCD Wall Modules –
Operating Guide (Form 63-2719) for information
about customizing the wall module configuration,
such as modifying the default Home screens or
creating your own application.

FEATURES

The Zio wall modules include:

• Ability to control user access to controller parameters,
including password protection on TR71 and TR75
models.

• Ability to assign labels for enumerated values.

following parameters: temperature setpoint, room
temperature, room humidity, outdoor humidity,
outdoor temperature, and time, or one of virtually any
parameter in the controller.

•Network bus jack.

• Simple 2-wire terminal connection to the
programmable controller and an optional 2-wire
terminal connection for the network. All connections
are polarity insensitive.

• Permanent retention of user configuration, including
setpoints after a power outage.

SPECIFICATIONS

Models: TR70, TR71, TR75.

TR70-H, TR71-H and TR75-H include an onboard
humidity sensor.

Environmental Ratings:

• Operating Temperature: 30°F to 110°F (-1°C to 43°C)

• Shipping Temperature: -40°F to 150°F (-40°C to 65.5°C)

• Relative Humidity: 5% to 95% non-condensing

Accessories:

50007298-001 (pack of 12) medium, cover plate;

6-7/8 x 5 in. (175 x 127 mm).

Approvals:

Class B

CE; UL94-HB plastic enclosure; FCC Part 15,

ZIO®/ZIO PLUS LCD WALL MODULES

CAUTION

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

TAB S (4 )

2-3/8 (60)

3-3/8 (95)

4-1/8
(105)

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

ONMARK® 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

IMPORTANT

All wiring must comply with local electrical codes and
ordinances or as specified on installation wiring dia­grams.

— 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.

Fig. 1. LCD Wall Module features.

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.

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.

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