What
is the Traccel™ Room Controller?
The Traccel Room Controller is a room pressure controller
that works in conjunction with two pressure-independent
venturi valves, typically one room supply and one room
exhaust. A microprocessor mounted on the controller
modulates both valves airflow simultaneously by using
unique factory loaded flow data to maintain directional
airflow through a volumetric offset approach. This control
architecture saves field labor and hardware costs.
What
are the functions of the Traccel Room Controller?
The
Traccel Room Controller can control temperature, occupancy
and HVAC emergency modes. It can also accommodate additional
flow inputs to maintain room balance in the local airflow
zone.
Where
can I use the Traccel Room Controller?
The
Traccel Room Controller is ideal in variable air volume
(VAV) temperature control applications where consistent
directional airflow is critical. In these flow-tracking
applications, the controller maintains an offset between
the air volume supplied into and exhausted from the
space to maintain consistent room pressurization and
directional airflow.
Examples
of specific applications in which you can use the Traccel
Room Controller are:
How
can I save money with the Traccel Room Controller?
There
are four ways you can save money with the Traccel Room
Controller:
- Since
there is only one controller controlling the supply
and exhaust valves, you save on hardware costs.
- No
flow sensors and, consequently, no maintenance are required,
because the valves’ pressure-independent operation
and factory characterization eliminates these needs.
-
The valves control airflow accurately at much lower
flows than terminal boxes, which reduces energy costs.
-
The valves are characterized in the factory, which means
that commissioning time is reduced in the field.
The
Traccel Room Controller is LonMark® certified. Why
is this important?
Because the Traccel Room Controller is a LonMark certified
product, it has been designed to meet a standard functional
profile. This means that it can communicate over open
LonWorks® networks. As a result, interoperability
is assured in an open Lon system.
Can
I use more than one Traccel Room Controller in large spaces
to control multiple temperature zones?
Yes,
it is ideal where variations in temperature gradients
exist. In these applications, multiple temperature zones
can be used to provide local cooling where needed. Up
to three Traccel Room Controllers can work together in
these applications to sum the total supply volume for
the different temperature zones and modulate one exhaust
valve to maintain stable room pressurization and directional
airflow.
Can
the Shut-off Valve and Traccel Room Controller be used
in the same space?
Yes.
This is an excellent alternative for a biosafety space,
where the typical airflow control objective is inward
directional airflow. For example, a Shut-off Valve can
be used to isolate the biosafety cabinet’s exhaust
flow when the cabinet is not in use. As the Shut-off Valve
closes, it communicates over the room-level control network
with the Traccel Room Controller, which compensates to
maintain the desired room balance and ensure the correct
directional airflow.
How
can the Traccel Room Controller improve the air quality
in a health care facility?
In
a health care facility, infections can spread through
airborne particles. Also, lint from bedding and linens
cause problems with flow measuring devices in exhaust
boxes, resulting in incorrect direction airflow. The Traccel
Room Controller provides effective protection from airborne
particles by maintaining the correct direction airflow
control at all times. The valves are impervious to dust
and lint in a hospital environment and will continue to
maintain airflow control accuracy—even in the event
of a power failure. As a result, the correct room pressurization
and directional airflow are maintained at all times.
Can
the Traccel Room Controller be integrated with other systems?
Yes.
Since the Traccel Room Controller is a LonMark certified
product, it can communicate with any building management
system (BMS) with a Lon interface. The controller is also
fully compatible and can communicate with any BMS over
the Celeris communications link.
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Traccel Room Controller