Titus T3SQ-1 User Manual

T3SQ-1-IOM-1.0 6-6-09

Installation, Operation & Maintenance of the T3SQ Analog

VAV Diffuser

Step 1

The units should be shipped assembled except for the backpan. The thermal T
additional packaging to protect the actuator assembly. Remove all packaging from the components.

If the unit is not assembled, follow the steps below before proceeding (see Figure 1):

1. Insert the control disc guide into the control disc.

2. Screw the bottom of the actuator / control disc assembly into the mounting channel.

SQ is shipped with

3

Note: The T3SQ-1 diffuser is shipped as a dummy unit. Master and drone operation is
determined by the wiring – discussed in Step 3. Master and drone locations are not needed
at this point in installation.

Step 2

Step 3

Place the back pan into ceiling grid. Connect duct work to back
pan. Insert the supply air temperature sensor into the supply
duct. If the unit has an optional inlet heater, the supply air
sensor must be positioned above the heater in the supply duct.

Set minimum airflow by adjusting
actuator shaft. 0.5" down from the top of the shaft allows the
diffuser to go to the full closed position.

Installation is completed by lining up the hooks on the face
plaque assembly with the corresponding slot. Insert the RJ-45
cable on actuator / control disc assembly through wiring conduit.
The hooks are inserted and the face plaque assembly is rotated
clockwise, and lowered so that each hook is firmly in place. (See
Figure 2)

the brass nuts at the top of the

1.

2.

3.

Figure 2. Face Panel Installation

Plug the RJ-45 cable on actuator / control disc assembly into
any RJ-45 jack on the wiring interface box on the backpan.

Backpan

Conduit for Wiring

Wiring Interface Box

Supply Air Temperature
Sensor

Actuator / Control Disc
Assembly

Control Disc Guide

Mounting Channel

Face Plaque

Figure 1. T3SQ-1 Assembly

T3SQ-1-IOM-2.0 6-6-09

Step 4

Wiring Instructions:

T3SQ-1 diffusers are all shipped as dummy units. Determination of
master and drone units is made through plug and play cable
connections.

One power module is required for every six (6) diffusers without electric
reheat or every five (5) diffusers with electric reheat. (See Figure 3)
Power module requires 120VAC line voltage input – hardwired by
others. (See Figure 4)

Master diffusers must be connected to a controller / thermostat. (See
Master Controller / Thermostat section on next page for details.) Drone
diffusers must be connected to a master diffuser. Disconnect the
supply air temperature sensor on all drone units.

White RJ-12 6-pin cables provide 24VAC power between diffusers.
RJ-12 cables should be used between the power module and the first
diffuser and to connect a master unit to another master unit. The RJ-12
jacks are interchangeable – either RJ-12 jack may be used during
installation. (See Example below)

Blue RJ-45 8-pin cables provide 24VAC power and control signal
between diffusers. RJ-45 cables should be used between diffuser and
master controller / thermostat and between master and drone units.
Disconnect the supply air temperature sensor on all drone units.

Figure 3. T3PM Power Module

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Figure 4. T

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PM Power Module Wiring

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The RJ-45 jacks are interchangeable – any open RJ-45 jack may be
used during installation. (See Example below)

Examples:

One master unit controlling 5 drone units:

Master unit Drone unit Drone unit Drone unit Drone unit Drone unit

120V input, field
wiring by others

24V output
to diffusers

Two master units controlling 2 drone units each:

Master unit Drone unit Drone unit Drone unit Drone unit

120V input, field
wiring by others

RJ-12 24V power only
RJ-45 power and control signal

Master unit

24V output
to diffusers